├── .gitignore
├── .idea
    ├── .gitignore
    ├── .name
    ├── compiler.xml
    ├── copyright
    │   ├── compose_paging.xml
    │   └── profiles_settings.xml
    ├── deploymentTargetDropDown.xml
    ├── gradle.xml
    ├── inspectionProfiles
    │   └── Project_Default.xml
    ├── kotlinc.xml
    ├── migrations.xml
    ├── misc.xml
    └── vcs.xml
├── README.md
├── app
    ├── .gitignore
    ├── build.gradle
    ├── proguard-rules.pro
    └── src
    │   ├── androidTest
    │       └── java
    │       │   └── com
    │       │       └── yusufarisoy
    │       │           └── composepaging
    │       │               └── ExampleInstrumentedTest.kt
    │   ├── main
    │       ├── AndroidManifest.xml
    │       ├── java
    │       │   └── com
    │       │   │   └── yusufarisoy
    │       │   │       └── composepagingapp
    │       │   │           ├── App.kt
    │       │   │           ├── data
    │       │   │               ├── api
    │       │   │               │   └── RickAndMortyServiceApi.kt
    │       │   │               ├── entity
    │       │   │               │   ├── BaseResponse.kt
    │       │   │               │   ├── Character.kt
    │       │   │               │   ├── CharacterUiModel.kt
    │       │   │               │   ├── CharactersUiModel.kt
    │       │   │               │   ├── HomeUiModel.kt
    │       │   │               │   ├── Info.kt
    │       │   │               │   ├── Location.kt
    │       │   │               │   ├── Origin.kt
    │       │   │               │   ├── SearchUiModel.kt
    │       │   │               │   └── mapper
    │       │   │               │   │   └── CharactersResponseToCharactersUiModelMapper.kt
    │       │   │               └── repository
    │       │   │               │   ├── CharactersRepository.kt
    │       │   │               │   └── datasource
    │       │   │               │       ├── CharacterDataSourceImpl.kt
    │       │   │               │       └── CharactersDataSource.kt
    │       │   │           ├── di
    │       │   │               └── NetworkModule.kt
    │       │   │           ├── domain
    │       │   │               ├── FetchCharactersUseCase.kt
    │       │   │               ├── HomePagingSource.kt
    │       │   │               └── SearchPagingSource.kt
    │       │   │           ├── ui
    │       │   │               ├── MainActivity.kt
    │       │   │               ├── home
    │       │   │               │   ├── HomeFragment.kt
    │       │   │               │   ├── HomeState.kt
    │       │   │               │   └── HomeViewModel.kt
    │       │   │               ├── search
    │       │   │               │   ├── SearchFragment.kt
    │       │   │               │   ├── SearchState.kt
    │       │   │               │   └── SearchViewModel.kt
    │       │   │               └── theme
    │       │   │               │   ├── Color.kt
    │       │   │               │   ├── Shape.kt
    │       │   │               │   ├── Theme.kt
    │       │   │               │   └── Typography.kt
    │       │   │           ├── util
    │       │   │               ├── BaseViewModel.kt
    │       │   │               ├── BaseViewModelExt.kt
    │       │   │               ├── FlowExt.kt
    │       │   │               ├── Mapper.kt
    │       │   │               ├── NetworkCall.kt
    │       │   │               ├── NetworkResponse.kt
    │       │   │               └── UseCase.kt
    │       │   │           └── view
    │       │   │               ├── common
    │       │   │                   ├── Character.kt
    │       │   │                   ├── Error.kt
    │       │   │                   └── Loading.kt
    │       │   │               ├── home
    │       │   │                   └── Home.kt
    │       │   │               └── search
    │       │   │                   └── Search.kt
    │       └── res
    │       │   ├── drawable-v24
    │       │       └── ic_launcher_foreground.xml
    │       │   ├── drawable
    │       │       ├── ic_circle.xml
    │       │       ├── ic_delete.xml
    │       │       ├── ic_favorite_fill.xml
    │       │       ├── ic_favorite_outline.xml
    │       │       ├── ic_launcher_background.xml
    │       │       ├── ic_search.xml
    │       │       ├── ic_swipe_to_delete.xml
    │       │       └── search_placeholder.png
    │       │   ├── layout
    │       │       └── activity_main.xml
    │       │   ├── mipmap-anydpi-v26
    │       │       ├── ic_launcher.xml
    │       │       └── ic_launcher_round.xml
    │       │   ├── mipmap-hdpi
    │       │       ├── ic_launcher.webp
    │       │       └── ic_launcher_round.webp
    │       │   ├── mipmap-mdpi
    │       │       ├── ic_launcher.webp
    │       │       └── ic_launcher_round.webp
    │       │   ├── mipmap-xhdpi
    │       │       ├── ic_launcher.webp
    │       │       └── ic_launcher_round.webp
    │       │   ├── mipmap-xxhdpi
    │       │       ├── ic_launcher.webp
    │       │       └── ic_launcher_round.webp
    │       │   ├── mipmap-xxxhdpi
    │       │       ├── ic_launcher.webp
    │       │       └── ic_launcher_round.webp
    │       │   ├── values-night
    │       │       └── themes.xml
    │       │   ├── values
    │       │       ├── colors.xml
    │       │       ├── strings.xml
    │       │       └── themes.xml
    │       │   └── xml
    │       │       ├── backup_rules.xml
    │       │       └── data_extraction_rules.xml
    │   └── test
    │       └── java
    │           └── com
    │               └── yusufarisoy
    │                   └── composepaging
    │                       └── ExampleUnitTest.kt
├── build.gradle
├── buildSrc
    ├── build.gradle.kts
    ├── build
    │   ├── classes
    │   │   └── kotlin
    │   │   │   └── main
    │   │   │       ├── Libs.class
    │   │   │       ├── META-INF
    │   │   │           └── buildSrc.kotlin_module
    │   │   │       └── Versions.class
    │   ├── kotlin
    │   │   ├── buildSrcjar-classes.txt
    │   │   └── compileKotlin
    │   │   │   ├── build-history.bin
    │   │   │   ├── caches-jvm
    │   │   │       ├── inputs
    │   │   │       │   ├── source-to-output.tab
    │   │   │       │   ├── source-to-output.tab.keystream
    │   │   │       │   ├── source-to-output.tab.keystream.len
    │   │   │       │   ├── source-to-output.tab.len
    │   │   │       │   ├── source-to-output.tab.values.at
    │   │   │       │   ├── source-to-output.tab_i
    │   │   │       │   └── source-to-output.tab_i.len
    │   │   │       ├── jvm
    │   │   │       │   └── kotlin
    │   │   │       │   │   ├── class-attributes.tab
    │   │   │       │   │   ├── class-attributes.tab.keystream
    │   │   │       │   │   ├── class-attributes.tab.keystream.len
    │   │   │       │   │   ├── class-attributes.tab.len
    │   │   │       │   │   ├── class-attributes.tab.values.at
    │   │   │       │   │   ├── class-attributes.tab_i
    │   │   │       │   │   ├── class-attributes.tab_i.len
    │   │   │       │   │   ├── class-fq-name-to-source.tab
    │   │   │       │   │   ├── class-fq-name-to-source.tab.keystream
    │   │   │       │   │   ├── class-fq-name-to-source.tab.keystream.len
    │   │   │       │   │   ├── class-fq-name-to-source.tab.len
    │   │   │       │   │   ├── class-fq-name-to-source.tab.values.at
    │   │   │       │   │   ├── class-fq-name-to-source.tab_i
    │   │   │       │   │   ├── class-fq-name-to-source.tab_i.len
    │   │   │       │   │   ├── constants.tab
    │   │   │       │   │   ├── constants.tab.keystream
    │   │   │       │   │   ├── constants.tab.keystream.len
    │   │   │       │   │   ├── constants.tab.len
    │   │   │       │   │   ├── constants.tab.values
    │   │   │       │   │   ├── constants.tab.values.at
    │   │   │       │   │   ├── constants.tab.values.s
    │   │   │       │   │   ├── constants.tab_i
    │   │   │       │   │   ├── constants.tab_i.len
    │   │   │       │   │   ├── internal-name-to-source.tab
    │   │   │       │   │   ├── internal-name-to-source.tab.keystream
    │   │   │       │   │   ├── internal-name-to-source.tab.keystream.len
    │   │   │       │   │   ├── internal-name-to-source.tab.len
    │   │   │       │   │   ├── internal-name-to-source.tab.values.at
    │   │   │       │   │   ├── internal-name-to-source.tab_i
    │   │   │       │   │   ├── internal-name-to-source.tab_i.len
    │   │   │       │   │   ├── proto.tab
    │   │   │       │   │   ├── proto.tab.keystream
    │   │   │       │   │   ├── proto.tab.keystream.len
    │   │   │       │   │   ├── proto.tab.len
    │   │   │       │   │   ├── proto.tab.values.at
    │   │   │       │   │   ├── proto.tab_i
    │   │   │       │   │   ├── proto.tab_i.len
    │   │   │       │   │   ├── source-to-classes.tab
    │   │   │       │   │   ├── source-to-classes.tab.keystream
    │   │   │       │   │   ├── source-to-classes.tab.keystream.len
    │   │   │       │   │   ├── source-to-classes.tab.len
    │   │   │       │   │   ├── source-to-classes.tab.values.at
    │   │   │       │   │   ├── source-to-classes.tab_i
    │   │   │       │   │   └── source-to-classes.tab_i.len
    │   │   │       └── lookups
    │   │   │       │   ├── counters.tab
    │   │   │       │   ├── file-to-id.tab
    │   │   │       │   ├── file-to-id.tab.keystream
    │   │   │       │   ├── file-to-id.tab.keystream.len
    │   │   │       │   ├── file-to-id.tab.len
    │   │   │       │   ├── file-to-id.tab.values.at
    │   │   │       │   ├── file-to-id.tab_i
    │   │   │       │   ├── file-to-id.tab_i.len
    │   │   │       │   ├── id-to-file.tab
    │   │   │       │   ├── id-to-file.tab.keystream
    │   │   │       │   ├── id-to-file.tab.keystream.len
    │   │   │       │   ├── id-to-file.tab.len
    │   │   │       │   ├── id-to-file.tab.values.at
    │   │   │       │   ├── id-to-file.tab_i
    │   │   │       │   ├── id-to-file.tab_i.len
    │   │   │       │   ├── lookups.tab
    │   │   │       │   ├── lookups.tab.keystream
    │   │   │       │   ├── lookups.tab.keystream.len
    │   │   │       │   ├── lookups.tab.len
    │   │   │       │   ├── lookups.tab.values.at
    │   │   │       │   ├── lookups.tab_i
    │   │   │       │   └── lookups.tab_i.len
    │   │   │   └── last-build.bin
    │   ├── libs
    │   │   └── buildSrc.jar
    │   ├── pluginUnderTestMetadata
    │   │   └── plugin-under-test-metadata.properties
    │   ├── reports
    │   │   └── plugin-development
    │   │   │   └── validation-report.txt
    │   └── tmp
    │   │   └── jar
    │   │       └── MANIFEST.MF
    └── src
    │   └── main
    │       └── java
    │           └── Dependencies.kt
├── composepaging
    ├── .gitignore
    ├── build.gradle
    ├── consumer-rules.pro
    ├── proguard-rules.pro
    └── src
    │   ├── androidTest
    │       └── java
    │       │   └── com
    │       │       └── yusufarisoy
    │       │           └── composepaging
    │       │               └── ExampleInstrumentedTest.kt
    │   ├── main
    │       ├── AndroidManifest.xml
    │       └── java
    │       │   └── com
    │       │       └── yusufarisoy
    │       │           └── composepaging
    │       │               ├── BasePager.kt
    │       │               ├── ComposePager.kt
    │       │               ├── ComposePagerWithQuery.kt
    │       │               ├── ComposePagingExt.kt
    │       │               ├── pagingdata
    │       │                   └── ComposePagingData.kt
    │       │               └── pagingsource
    │       │                   ├── ComposePagingSource.kt
    │       │                   └── ComposePagingSourceWithQuery.kt
    │   └── test
    │       └── java
    │           └── com
    │               └── yusufarisoy
    │                   └── composepaging
    │                       └── ExampleUnitTest.kt
├── gradle.properties
├── gradle
    └── wrapper
    │   ├── gradle-wrapper.jar
    │   └── gradle-wrapper.properties
├── gradlew
├── gradlew.bat
└── settings.gradle


/.gitignore:
--------------------------------------------------------------------------------
 1 | *.iml
 2 | .gradle
 3 | /local.properties
 4 | /.idea/caches
 5 | /.idea/libraries
 6 | /.idea/modules.xml
 7 | /.idea/workspace.xml
 8 | /.idea/navEditor.xml
 9 | /.idea/assetWizardSettings.xml
10 | .DS_Store
11 | /build
12 | /captures
13 | .externalNativeBuild
14 | .cxx
15 | local.properties
16 | 


--------------------------------------------------------------------------------
/.idea/.gitignore:
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1 | # Default ignored files
2 | /shelf/
3 | /workspace.xml
4 | 


--------------------------------------------------------------------------------
/.idea/.name:
--------------------------------------------------------------------------------
1 | ComposePagingApp


--------------------------------------------------------------------------------
/.idea/compiler.xml:
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="CompilerConfiguration">
4 |     <bytecodeTargetLevel target="17" />
5 |   </component>
6 | </project>


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/.idea/copyright/compose_paging.xml:
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1 | <component name="CopyrightManager">
2 |   <copyright>
3 |     <option name="notice" value="Created by Yusuf Arisoy on Jan 23, 2023&#10;Copyright (C) 2023 Yusuf Arisoy. All rights reserved.&#10;Last modified &amp;#36;file.lastModified" />
4 |     <option name="myName" value="compose-paging" />
5 |   </copyright>
6 | </component>


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/.idea/copyright/profiles_settings.xml:
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1 | <component name="CopyrightManager">
2 |   <settings>
3 |     <module2copyright>
4 |       <element module="Open Files" copyright="compose-paging" />
5 |     </module2copyright>
6 |   </settings>
7 | </component>


--------------------------------------------------------------------------------
/.idea/deploymentTargetDropDown.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project version="4">
 3 |   <component name="deploymentTargetDropDown">
 4 |     <value>
 5 |       <entry key="app">
 6 |         <State />
 7 |       </entry>
 8 |     </value>
 9 |   </component>
10 | </project>


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/.idea/gradle.xml:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project version="4">
 3 |   <component name="GradleMigrationSettings" migrationVersion="1" />
 4 |   <component name="GradleSettings">
 5 |     <option name="linkedExternalProjectsSettings">
 6 |       <GradleProjectSettings>
 7 |         <option name="externalProjectPath" value="$PROJECT_DIR$" />
 8 |         <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
 9 |         <option name="modules">
10 |           <set>
11 |             <option value="$PROJECT_DIR$" />
12 |             <option value="$PROJECT_DIR$/app" />
13 |             <option value="$PROJECT_DIR$/buildSrc" />
14 |             <option value="$PROJECT_DIR$/composepaging" />
15 |           </set>
16 |         </option>
17 |         <option name="resolveExternalAnnotations" value="false" />
18 |       </GradleProjectSettings>
19 |     </option>
20 |   </component>
21 | </project>


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/.idea/inspectionProfiles/Project_Default.xml:
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 1 | <component name="InspectionProjectProfileManager">
 2 |   <profile version="1.0">
 3 |     <option name="myName" value="Project Default" />
 4 |     <inspection_tool class="PreviewAnnotationInFunctionWithParameters" enabled="true" level="ERROR" enabled_by_default="true">
 5 |       <option name="composableFile" value="true" />
 6 |     </inspection_tool>
 7 |     <inspection_tool class="PreviewApiLevelMustBeValid" enabled="true" level="ERROR" enabled_by_default="true">
 8 |       <option name="composableFile" value="true" />
 9 |     </inspection_tool>
10 |     <inspection_tool class="PreviewDimensionRespectsLimit" enabled="true" level="WARNING" enabled_by_default="true">
11 |       <option name="composableFile" value="true" />
12 |     </inspection_tool>
13 |     <inspection_tool class="PreviewFontScaleMustBeGreaterThanZero" enabled="true" level="ERROR" enabled_by_default="true">
14 |       <option name="composableFile" value="true" />
15 |     </inspection_tool>
16 |     <inspection_tool class="PreviewMultipleParameterProviders" enabled="true" level="ERROR" enabled_by_default="true">
17 |       <option name="composableFile" value="true" />
18 |     </inspection_tool>
19 |     <inspection_tool class="PreviewMustBeTopLevelFunction" enabled="true" level="ERROR" enabled_by_default="true">
20 |       <option name="composableFile" value="true" />
21 |     </inspection_tool>
22 |     <inspection_tool class="PreviewNeedsComposableAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
23 |       <option name="composableFile" value="true" />
24 |     </inspection_tool>
25 |     <inspection_tool class="PreviewNotSupportedInUnitTestFiles" enabled="true" level="ERROR" enabled_by_default="true">
26 |       <option name="composableFile" value="true" />
27 |     </inspection_tool>
28 |     <inspection_tool class="PreviewPickerAnnotation" enabled="true" level="ERROR" enabled_by_default="true">
29 |       <option name="composableFile" value="true" />
30 |     </inspection_tool>
31 |   </profile>
32 | </component>


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/.idea/kotlinc.xml:
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="KotlinJpsPluginSettings">
4 |     <option name="version" value="1.7.20" />
5 |   </component>
6 | </project>


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/.idea/migrations.xml:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project version="4">
 3 |   <component name="ProjectMigrations">
 4 |     <option name="MigrateToGradleLocalJavaHome">
 5 |       <set>
 6 |         <option value="$PROJECT_DIR$" />
 7 |       </set>
 8 |     </option>
 9 |   </component>
10 | </project>


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/.idea/misc.xml:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project version="4">
 3 |   <component name="ExternalStorageConfigurationManager" enabled="true" />
 4 |   <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
 5 |     <output url="file://$PROJECT_DIR$/build/classes" />
 6 |   </component>
 7 |   <component name="ProjectType">
 8 |     <option name="id" value="Android" />
 9 |   </component>
10 | </project>


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/.idea/vcs.xml:
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1 | <?xml version="1.0" encoding="UTF-8"?>
2 | <project version="4">
3 |   <component name="VcsDirectoryMappings">
4 |     <mapping directory="$PROJECT_DIR$" vcs="Git" />
5 |   </component>
6 | </project>


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/README.md:
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 1 | # ComposePaging
 2 | ComposePaging library for [Jetpack Compose](https://developer.android.com/jetpack/compose).
 3 | 
 4 | ## About
 5 | ComposePaging is a paging library for Compose. ComposePaging makes it possible to use dynamic Composables as **`skippable`** for **better performance** like it should be.
 6 | 
 7 | ## Metrics
 8 | Metrics is the way of measuring the performance of composables. Ideally a composable method should be `restartable` and `skipabble` for the compiler to work with best performance.
 9 | <p></p>
10 | 
11 | Besides being lazy, `ComposePaging` Feed items are easy to maintain and it's easy to make them `restartable` and `skipabble` while being updatable for better performance for your Android application.
12 | 
13 | ## Attributes
14 | | Attribute | Description |
15 | |----- | --|
16 | | `prefetchDistance` | Defines the item distance to request the next page before reaching the bottom |
17 | | `initialPage` | Defines the initial page for the first request |
18 | 
19 | ## Demo
20 | Composables items in the pages are updated without having any performance issues.
21 | | ComposePager | ComposePagerWithQuery |
22 | | ------ | ------ |
23 | | <video src="https://user-images.githubusercontent.com/53172424/214320381-a6d616cb-0f7e-4f14-beb1-debb10c786b2.mp4" /> | <video src="https://user-images.githubusercontent.com/53172424/214320641-001bdc75-a7ea-408f-8475-585109065ff9.mp4" /> |
24 | 
25 | ## Usage
26 | #### PagingSource
27 | ComposePagingSource is used for requesting pages. [Example for more info](https://github.com/yusufarisoy/compose-paging/blob/main/app/src/main/java/com/yusufarisoy/composepaging/domain/HomePagingSource.kt).
28 | ```
29 | class PagingSource(
30 |     private val useCase: UseCase,
31 |     private val onPageLoaded: (itemCount: Int) -> Unit
32 | ) : ComposePagingSource<UiModel>() {
33 | 
34 |     override suspend fun load(params: Params): Result<UiModel> {
35 |         val page = params.page
36 |         val response = useCase.run(UseCase.Params(page = page))
37 | 
38 |         if (page == 0 && response.items.isEmpty()) {
39 |             return Result.Error(NetworkError.EmptyFeedError("No results found"))
40 |         }
41 | 
42 |         onPageLoaded(response.count)
43 | 
44 |         return Result.Page(data = response.items, hasNextPage = response.hasNextPage)
45 |     }
46 | }
47 | ```
48 | 
49 | #### PagingData and Pager in ViewModel
50 | ComposePagingData is used for storing the page data, it stores `SnapshotStateList` for better performance and maintainability. [Look for more info](https://github.com/yusufarisoy/compose-paging/blob/main/composepaging/src/main/java/com/yusufarisoy/composepaging/pagingdata/ComposePagingData.kt).
51 | <p> ComposePager is used for managing the page data and states. <a href="https://github.com/yusufarisoy/compose-paging/blob/main/composepaging/src/main/java/com/yusufarisoy/composepaging/ComposePager.kt"> Look for more info. </a> </p>
52 | 
53 | ```
54 | val feed: ComposePagingData<UiModel> = ComposePagingData(prefetchDistance = 2)
55 | private val pager: ComposePager<UiModel> = ComposePager(
56 |     pagingSource = PagingSource(
57 |         useCase = useCase,
58 |         onPageLoaded = ::onPageLoaded
59 |     ),
60 |     initialPage = 1
61 | )
62 | ```
63 | 
64 | ## Setup
65 | ```
66 | allprojects {
67 |     repositories {
68 |         ...
69 |         maven { url 'https://jitpack.io' }
70 |     }
71 | }
72 | ```
73 | ```
74 | dependencies {
75 |         implementation 'com.github.yusufarisoy:compose-paging:1.0.0'
76 | }
77 | ```


--------------------------------------------------------------------------------
/app/.gitignore:
--------------------------------------------------------------------------------
1 | /build


--------------------------------------------------------------------------------
/app/build.gradle:
--------------------------------------------------------------------------------
 1 | plugins {
 2 |     id 'com.android.application'
 3 |     id 'org.jetbrains.kotlin.android'
 4 |     id 'kotlin-kapt'
 5 |     id 'kotlin-parcelize'
 6 |     id 'com.google.dagger.hilt.android'
 7 |     id 'dagger.hilt.android.plugin'
 8 | }
 9 | 
10 | android {
11 |     namespace 'com.yusufarisoy.composepagingapp'
12 |     compileSdk 33
13 | 
14 |     defaultConfig {
15 |         applicationId 'com.yusufarisoy.composepagingapp'
16 |         minSdk 21
17 |         targetSdk 33
18 |         versionCode 1
19 |         versionName "1.0"
20 | 
21 |         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
22 |     }
23 | 
24 |     buildTypes {
25 |         release {
26 |             minifyEnabled false
27 |             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
28 |         }
29 |     }
30 |     compileOptions {
31 |         sourceCompatibility JavaVersion.VERSION_1_8
32 |         targetCompatibility JavaVersion.VERSION_1_8
33 |     }
34 |     kotlinOptions {
35 |         jvmTarget = '1.8'
36 |     }
37 |     buildFeatures {
38 |         compose true
39 |     }
40 |     composeOptions {
41 |         kotlinCompilerExtensionVersion '1.3.2'
42 |         kotlinCompilerVersion '1.7.20'
43 |     }
44 |     android {
45 |         defaultConfig {
46 |             multiDexEnabled true
47 |         }
48 |     }
49 | }
50 | 
51 | dependencies {
52 | 
53 |     implementation 'com.github.yusufarisoy:compose-paging:1.0.0'
54 | 
55 |     implementation Libs.coreKtx
56 |     implementation Libs.appCompat
57 |     //Compose
58 |     implementation Libs.composeUi
59 |     implementation Libs.composeCompiler
60 |     implementation Libs.composeMaterial
61 |     implementation Libs.composeTooling
62 |     implementation Libs.activityCompose
63 |     implementation Libs.hiltNavigationCompose
64 |     //Retrofit and Gson
65 |     implementation Libs.retrofit
66 |     implementation Libs.retrofitConverter
67 |     implementation Libs.gson
68 |     //Lifecycle
69 |     implementation Libs.lifecycleFragment
70 |     implementation Libs.lifecycleCommon
71 |     implementation Libs.lifecycleViewModel
72 |     implementation Libs.lifecycleRunTime
73 |     //Coroutines
74 |     implementation Libs.coroutinesCore
75 |     implementation Libs.coroutinesAndroid
76 |     //Dagger Hilt
77 |     kapt Libs.hiltCompiler
78 |     implementation Libs.hiltAndroid
79 |     //Coil
80 |     implementation Libs.coilCompose
81 |     //Test
82 |     testImplementation Libs.testJunit
83 |     androidTestImplementation Libs.testExtJunit
84 |     androidTestImplementation Libs.espressoCore
85 |     androidTestImplementation Libs.composeUiTest
86 |     debugImplementation Libs.composeUiTooling
87 | }


--------------------------------------------------------------------------------
/app/proguard-rules.pro:
--------------------------------------------------------------------------------
 1 | # Add project specific ProGuard rules here.
 2 | # You can control the set of applied configuration files using the
 3 | # proguardFiles setting in build.gradle.
 4 | #
 5 | # For more details, see
 6 | #   http://developer.android.com/guide/developing/tools/proguard.html
 7 | 
 8 | # If your project uses WebView with JS, uncomment the following
 9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | #   public *;
13 | #}
14 | 
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 | 
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile


--------------------------------------------------------------------------------
/app/src/androidTest/java/com/yusufarisoy/composepaging/ExampleInstrumentedTest.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp
 2 | 
 3 | import androidx.test.platform.app.InstrumentationRegistry
 4 | import androidx.test.ext.junit.runners.AndroidJUnit4
 5 | 
 6 | import org.junit.Test
 7 | import org.junit.runner.RunWith
 8 | 
 9 | import org.junit.Assert.*
10 | 
11 | /**
12 |  * Instrumented test, which will execute on an Android device.
13 |  *
14 |  * See [testing documentation](http://d.android.com/tools/testing).
15 |  */
16 | @RunWith(AndroidJUnit4::class)
17 | class ExampleInstrumentedTest {
18 |     @Test
19 |     fun useAppContext() {
20 |         // Context of the app under test.
21 |         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
22 |         assertEquals("com.yusufarisoy.composepaging", appContext.packageName)
23 |     }
24 | }


--------------------------------------------------------------------------------
/app/src/main/AndroidManifest.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3 |     xmlns:tools="http://schemas.android.com/tools"
 4 |     package="com.yusufarisoy.composepagingapp">
 5 | 
 6 |     <uses-permission android:name="android.permission.INTERNET" />
 7 | 
 8 |     <application
 9 |         android:name=".App"
10 |         android:allowBackup="true"
11 |         android:dataExtractionRules="@xml/data_extraction_rules"
12 |         android:fullBackupContent="@xml/backup_rules"
13 |         android:icon="@mipmap/ic_launcher"
14 |         android:label="@string/app_name"
15 |         android:roundIcon="@mipmap/ic_launcher_round"
16 |         android:supportsRtl="true"
17 |         android:theme="@style/Theme.ComposePaging"
18 |         tools:targetApi="31">
19 |         <activity
20 |             android:name=".ui.MainActivity"
21 |             android:exported="true">
22 |             <intent-filter>
23 |                 <action android:name="android.intent.action.MAIN" />
24 | 
25 |                 <category android:name="android.intent.category.LAUNCHER" />
26 |             </intent-filter>
27 | 
28 |             <meta-data
29 |                 android:name="android.app.lib_name"
30 |                 android:value="" />
31 |         </activity>
32 |     </application>
33 | 
34 | </manifest>


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/App.kt:
--------------------------------------------------------------------------------
1 | package com.yusufarisoy.composepagingapp
2 | 
3 | import android.app.Application
4 | import dagger.hilt.android.HiltAndroidApp
5 | 
6 | @HiltAndroidApp
7 | class App : Application()


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/api/RickAndMortyServiceApi.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.data.api
 2 | 
 3 | import com.yusufarisoy.composepagingapp.data.entity.BaseResponse
 4 | import com.yusufarisoy.composepagingapp.data.entity.Character
 5 | import retrofit2.Response
 6 | import retrofit2.http.GET
 7 | import retrofit2.http.Path
 8 | import retrofit2.http.Query
 9 | 
10 | interface RickAndMortyServiceApi {
11 | 
12 |     @GET(GET_CHARACTERS)
13 |     suspend fun getCharacters(
14 |         @Query("name") name: String?,
15 |         @Query("page") page: Int?
16 |     ): Response<BaseResponse<List<Character>>>
17 | 
18 |     @GET(GET_CHARACTER_BY_ID)
19 |     suspend fun getCharacterById(@Path("id") id: Int): Response<Character>
20 | 
21 |     companion object {
22 |         const val BASE_URL = "https://rickandmortyapi.com/api/"
23 |         private const val GET_CHARACTERS = "character"
24 |         private const val GET_CHARACTER_BY_ID = "character/{id}"
25 |     }
26 | }
27 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/entity/BaseResponse.kt:
--------------------------------------------------------------------------------
1 | package com.yusufarisoy.composepagingapp.data.entity
2 | 
3 | import com.google.gson.annotations.SerializedName
4 | 
5 | data class BaseResponse<out T>(
6 |     @SerializedName("info") val info: Info,
7 |     @SerializedName("results") val items: T
8 | )
9 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/entity/Character.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.data.entity
 2 | 
 3 | import com.google.gson.annotations.SerializedName
 4 | 
 5 | data class Character(
 6 |     @SerializedName("id") val id: Int,
 7 |     @SerializedName("name") val name: String,
 8 |     @SerializedName("status") val status: String,
 9 |     @SerializedName("species") val species: String,
10 |     @SerializedName("type") val type: String,
11 |     @SerializedName("gender") val gender: String,
12 |     @SerializedName("origin") val origin: Origin,
13 |     @SerializedName("location") val location: Location,
14 |     @SerializedName("image") val image: String,
15 |     @SerializedName("episode") val episode: List<String>,
16 |     @SerializedName("url") val url: String,
17 |     @SerializedName("created") val created: String
18 | )
19 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/entity/CharacterUiModel.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.data.entity
 2 | 
 3 | data class CharacterUiModel(
 4 |     val id: Int,
 5 |     val name: String,
 6 |     val status: String,
 7 |     val species: String,
 8 |     val gender: String,
 9 |     val origin: String,
10 |     val location: String,
11 |     val image: String,
12 |     val favorite: Boolean
13 | )
14 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/entity/CharactersUiModel.kt:
--------------------------------------------------------------------------------
1 | package com.yusufarisoy.composepagingapp.data.entity
2 | 
3 | data class CharactersUiModel(
4 |     val count: Int,
5 |     val characters: List<CharacterUiModel>,
6 |     val hasNextPage: Boolean
7 | )
8 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/entity/HomeUiModel.kt:
--------------------------------------------------------------------------------
1 | package com.yusufarisoy.composepagingapp.data.entity
2 | 
3 | import androidx.annotation.StringRes
4 | 
5 | data class HomeUiModel(
6 |     @StringRes val titleRes: Int,
7 |     val itemCount: Int
8 | )
9 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/entity/Info.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.data.entity
 2 | 
 3 | import com.google.gson.annotations.SerializedName
 4 | 
 5 | data class Info(
 6 |     @SerializedName("count") val count: Int,
 7 |     @SerializedName("pages") val pages: Int,
 8 |     @SerializedName("next") val next: String?,
 9 |     @SerializedName("prev") val prev: String?
10 | )
11 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/entity/Location.kt:
--------------------------------------------------------------------------------
1 | package com.yusufarisoy.composepagingapp.data.entity
2 | 
3 | import com.google.gson.annotations.SerializedName
4 | 
5 | data class Location(
6 |     @SerializedName("name") val name: String,
7 |     @SerializedName("url") val url: String
8 | )
9 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/entity/Origin.kt:
--------------------------------------------------------------------------------
1 | package com.yusufarisoy.composepagingapp.data.entity
2 | 
3 | import com.google.gson.annotations.SerializedName
4 | 
5 | data class Origin(
6 |     @SerializedName("name") val name: String,
7 |     @SerializedName("url") val url: String
8 | )
9 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/entity/SearchUiModel.kt:
--------------------------------------------------------------------------------
1 | package com.yusufarisoy.composepagingapp.data.entity
2 | 
3 | data class SearchUiModel(
4 |     val itemCount: Int? = null
5 | )
6 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/entity/mapper/CharactersResponseToCharactersUiModelMapper.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.data.entity.mapper
 2 | 
 3 | import com.yusufarisoy.composepagingapp.data.entity.BaseResponse
 4 | import com.yusufarisoy.composepagingapp.data.entity.Character
 5 | import com.yusufarisoy.composepagingapp.data.entity.CharacterUiModel
 6 | import com.yusufarisoy.composepagingapp.data.entity.CharactersUiModel
 7 | import com.yusufarisoy.composepagingapp.util.Mapper
 8 | import javax.inject.Inject
 9 | 
10 | class CharactersResponseToCharactersUiModelMapper @Inject constructor() :
11 |     Mapper<BaseResponse<List<Character>>, CharactersUiModel> {
12 | 
13 |     override fun map(input: BaseResponse<List<Character>>): CharactersUiModel {
14 |         val characters = input.items.map { character ->
15 |             CharacterUiModel(
16 |                 id = character.id,
17 |                 name = character.name,
18 |                 status = character.status,
19 |                 species = character.species,
20 |                 gender = character.gender,
21 |                 origin = character.origin.name,
22 |                 location = character.location.name,
23 |                 image = character.image,
24 |                 favorite = false
25 |             )
26 |         }
27 | 
28 |         return CharactersUiModel(
29 |             hasNextPage = input.info.next != null,
30 |             count = input.info.count,
31 |             characters = characters
32 |         )
33 |     }
34 | }
35 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/repository/CharactersRepository.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.data.repository
 2 | 
 3 | import com.yusufarisoy.composepagingapp.data.entity.BaseResponse
 4 | import com.yusufarisoy.composepagingapp.data.entity.Character
 5 | import com.yusufarisoy.composepagingapp.data.repository.datasource.CharactersDataSource
 6 | import com.yusufarisoy.composepagingapp.util.NetworkResponse
 7 | import com.yusufarisoy.composepagingapp.util.getResult
 8 | import javax.inject.Inject
 9 | 
10 | class CharactersRepository @Inject constructor(
11 |     private val dataSource: CharactersDataSource
12 | ) {
13 | 
14 |     suspend fun fetchCharacters(
15 |         characterName: String? = null,
16 |         page: Int? = null
17 |     ): NetworkResponse<BaseResponse<List<Character>>> {
18 |         val response = getResult {
19 |             dataSource.getCharacters(characterName, page)
20 |         }
21 | 
22 |         return response
23 |     }
24 | }
25 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/repository/datasource/CharacterDataSourceImpl.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.data.repository.datasource
 2 | 
 3 | import com.yusufarisoy.composepagingapp.data.api.RickAndMortyServiceApi
 4 | import com.yusufarisoy.composepagingapp.data.entity.BaseResponse
 5 | import com.yusufarisoy.composepagingapp.data.entity.Character
 6 | import retrofit2.Response
 7 | import javax.inject.Inject
 8 | 
 9 | class CharactersDataSourceImpl @Inject constructor(
10 |     private val service: RickAndMortyServiceApi
11 | ) : CharactersDataSource {
12 | 
13 |     override suspend fun getCharacters(
14 |         characterName: String?,
15 |         page: Int?
16 |     ): Response<BaseResponse<List<Character>>> {
17 |         return service.getCharacters(characterName,  page)
18 |     }
19 | 
20 |     override suspend fun getCharacterById(id: Int): Response<Character> {
21 |         return service.getCharacterById(id)
22 |     }
23 | }
24 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/data/repository/datasource/CharactersDataSource.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.data.repository.datasource
 2 | 
 3 | import com.yusufarisoy.composepagingapp.data.entity.BaseResponse
 4 | import com.yusufarisoy.composepagingapp.data.entity.Character
 5 | import retrofit2.Response
 6 | 
 7 | interface CharactersDataSource {
 8 | 
 9 |     suspend fun getCharacters(
10 |         characterName: String?,
11 |         page: Int?
12 |     ): Response<BaseResponse<List<Character>>>
13 | 
14 |     suspend fun getCharacterById(id: Int): Response<Character>
15 | }
16 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/di/NetworkModule.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.di
 2 | 
 3 | import com.google.gson.Gson
 4 | import com.yusufarisoy.composepagingapp.data.api.RickAndMortyServiceApi
 5 | import com.yusufarisoy.composepagingapp.data.api.RickAndMortyServiceApi.Companion.BASE_URL
 6 | import com.yusufarisoy.composepagingapp.data.repository.datasource.CharactersDataSource
 7 | import com.yusufarisoy.composepagingapp.data.repository.datasource.CharactersDataSourceImpl
 8 | import dagger.Module
 9 | import dagger.Provides
10 | import dagger.hilt.InstallIn
11 | import dagger.hilt.components.SingletonComponent
12 | import retrofit2.Retrofit
13 | import retrofit2.converter.gson.GsonConverterFactory
14 | import javax.inject.Singleton
15 | 
16 | @Module
17 | @InstallIn(SingletonComponent::class)
18 | class NetworkModule {
19 | 
20 |     @Provides
21 |     @Singleton
22 |     fun provideCharactersDataSource(service: RickAndMortyServiceApi): CharactersDataSource =
23 |         CharactersDataSourceImpl(service)
24 | 
25 |     @Provides
26 |     @Singleton
27 |     fun provideRickAndMortyServiceApi(retrofit: Retrofit): RickAndMortyServiceApi =
28 |         retrofit.create(RickAndMortyServiceApi::class.java)
29 | 
30 |     @Provides
31 |     @Singleton
32 |     fun provideRetrofit(gson: Gson): Retrofit = Retrofit.Builder()
33 |         .baseUrl(BASE_URL)
34 |         .addConverterFactory(GsonConverterFactory.create(gson))
35 |         .build()
36 | 
37 |     @Provides
38 |     @Singleton
39 |     fun provideGson(): Gson = Gson()
40 | }
41 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/domain/FetchCharactersUseCase.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.domain
 2 | 
 3 | import com.yusufarisoy.composepagingapp.data.entity.CharactersUiModel
 4 | import com.yusufarisoy.composepagingapp.data.entity.mapper.CharactersResponseToCharactersUiModelMapper
 5 | import com.yusufarisoy.composepagingapp.data.repository.CharactersRepository
 6 | import com.yusufarisoy.composepagingapp.util.NetworkError
 7 | import com.yusufarisoy.composepagingapp.util.NetworkResponse
 8 | import com.yusufarisoy.composepagingapp.util.UseCase
 9 | import javax.inject.Inject
10 | 
11 | class FetchCharactersUseCase @Inject constructor(
12 |     private val charactersRepository: CharactersRepository,
13 |     private val mapper: CharactersResponseToCharactersUiModelMapper
14 | ) : UseCase<FetchCharactersUseCase.Params, CharactersUiModel> {
15 | 
16 |     override suspend fun run(params: Params): CharactersUiModel {
17 |         return when (
18 |             val response = charactersRepository.fetchCharacters(params.characterName, params.page)
19 |         ) {
20 |             is NetworkResponse.Success -> mapper.map(response.data)
21 |             is NetworkResponse.Error -> throw NetworkError.NetworkCallError(
22 |                 message = "FetchCharactersUseCase NetworkCall Error"
23 |             )
24 |         }
25 |     }
26 | 
27 |     data class Params(
28 |         val page: Int = 0,
29 |         val characterName: String? = null
30 |     )
31 | }
32 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/domain/HomePagingSource.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.domain
 2 | 
 3 | import com.yusufarisoy.composepagingapp.data.entity.CharacterUiModel
 4 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource
 5 | import com.yusufarisoy.composepagingapp.util.NetworkError
 6 | 
 7 | class HomePagingSource(
 8 |     private val useCase: FetchCharactersUseCase,
 9 |     private val onPageLoaded: (itemCount: Int) -> Unit
10 | ) : ComposePagingSource<CharacterUiModel>() {
11 | 
12 |     override suspend fun load(params: Params): Result<CharacterUiModel> {
13 |         val page = params.page
14 |         val response = useCase.run(FetchCharactersUseCase.Params(page = page))
15 | 
16 |         if (page == 0 && response.characters.isEmpty()) {
17 |             return Result.Error(NetworkError.EmptyFeedError("No results found"))
18 |         }
19 | 
20 |         onPageLoaded(response.count)
21 | 
22 |         return Result.Page(data = response.characters, hasNextPage = response.hasNextPage)
23 |     }
24 | }
25 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/domain/SearchPagingSource.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.domain
 2 | 
 3 | import com.yusufarisoy.composepagingapp.data.entity.CharacterUiModel
 4 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource
 5 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSourceWithQuery
 6 | import com.yusufarisoy.composepagingapp.util.NetworkError
 7 | 
 8 | class SearchPagingSource(
 9 |     private val useCase: FetchCharactersUseCase
10 | ) : ComposePagingSourceWithQuery<SearchPagingSource.Params, CharacterUiModel>() {
11 | 
12 |     override suspend fun load(params: Params): ComposePagingSource.Result<CharacterUiModel> {
13 |         val response = useCase.run(FetchCharactersUseCase.Params(params.page, params.query))
14 | 
15 |         if (params.page == 0 && response.characters.isEmpty()) {
16 |             return ComposePagingSource.Result.Error(NetworkError.EmptyFeedError("No results found"))
17 |         }
18 | 
19 |         return ComposePagingSource.Result.Page(
20 |             data = response.characters,
21 |             hasNextPage = response.hasNextPage
22 |         )
23 |     }
24 | 
25 |     data class Params(
26 |         override val page: Int,
27 |         override val query: String
28 |     ) : ComposePagingSourceWithQuery.Params(page, query)
29 | }
30 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/ui/MainActivity.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.ui
 2 | 
 3 | import android.os.Bundle
 4 | import androidx.appcompat.app.AppCompatActivity
 5 | import com.yusufarisoy.composepagingapp.R
 6 | import com.yusufarisoy.composepagingapp.ui.home.HomeFragment
 7 | import dagger.hilt.android.AndroidEntryPoint
 8 | 
 9 | @AndroidEntryPoint
10 | class MainActivity : AppCompatActivity() {
11 | 
12 |     override fun onCreate(savedInstanceState: Bundle?) {
13 |         super.onCreate(savedInstanceState)
14 |         setContentView(R.layout.activity_main)
15 |         init()
16 |     }
17 | 
18 |     private fun init() {
19 |         supportFragmentManager
20 |             .beginTransaction()
21 |             .add(R.id.fragment_container, HomeFragment())
22 |             .commit()
23 |     }
24 | }
25 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/ui/home/HomeFragment.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.ui.home
 2 | 
 3 | import android.os.Bundle
 4 | import android.view.LayoutInflater
 5 | import android.view.View
 6 | import android.view.ViewGroup
 7 | import androidx.compose.ui.platform.ComposeView
 8 | import androidx.fragment.app.Fragment
 9 | import androidx.fragment.app.viewModels
10 | import com.yusufarisoy.composepagingapp.R
11 | import com.yusufarisoy.composepagingapp.ui.search.SearchFragment
12 | import com.yusufarisoy.composepagingapp.ui.theme.ComposePagingAppTheme
13 | import com.yusufarisoy.composepagingapp.util.collectIn
14 | import com.yusufarisoy.composepagingapp.view.home.HomeScreen
15 | import dagger.hilt.android.AndroidEntryPoint
16 | import kotlinx.coroutines.flow.onEach
17 | 
18 | @AndroidEntryPoint
19 | class HomeFragment : Fragment() {
20 | 
21 |     private val viewModel: HomeViewModel by viewModels()
22 | 
23 |     override fun onCreateView(
24 |         inflater: LayoutInflater,
25 |         container: ViewGroup?,
26 |         savedInstanceState: Bundle?
27 |     ): View = ComposeView(requireContext()).apply {
28 |         setContent {
29 |             ComposePagingAppTheme {
30 |                 HomeScreen(viewModel)
31 |             }
32 |         }
33 |     }
34 | 
35 |     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
36 |         super.onViewCreated(view, savedInstanceState)
37 |         observeEvents()
38 |     }
39 | 
40 |     private fun observeEvents() {
41 |         viewModel.eventFlow
42 |             .onEach { event ->
43 |                 when (event) {
44 |                     is HomeEvent.OpenSearch -> openSearch()
45 |                 }
46 |             }
47 |             .collectIn(viewLifecycleOwner)
48 |     }
49 | 
50 |     private fun openSearch() {
51 |         parentFragmentManager
52 |             .beginTransaction()
53 |             .replace(R.id.fragment_container, SearchFragment())
54 |             .addToBackStack(null)
55 |             .commit()
56 |     }
57 | }
58 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/ui/home/HomeState.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.ui.home
 2 | 
 3 | import com.yusufarisoy.composepagingapp.data.entity.HomeUiModel
 4 | import com.yusufarisoy.composepagingapp.util.ViewEvent
 5 | import com.yusufarisoy.composepagingapp.util.ViewState
 6 | 
 7 | sealed class HomeState : ViewState {
 8 | 
 9 |     object Loading : HomeState()
10 | 
11 |     data class Content(val uiModel: HomeUiModel) : HomeState()
12 | 
13 |     data class Error(val errorMessage: String) : HomeState()
14 | }
15 | 
16 | sealed class HomeEvent : ViewEvent {
17 | 
18 |     object OpenSearch : HomeEvent()
19 | }
20 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/ui/home/HomeViewModel.kt:
--------------------------------------------------------------------------------
  1 | package com.yusufarisoy.composepagingapp.ui.home
  2 | 
  3 | import android.util.Log
  4 | import androidx.lifecycle.viewModelScope
  5 | import com.yusufarisoy.composepaging.ComposePager
  6 | import com.yusufarisoy.composepagingapp.R
  7 | import com.yusufarisoy.composepagingapp.data.entity.CharacterUiModel
  8 | import com.yusufarisoy.composepagingapp.data.entity.HomeUiModel
  9 | import com.yusufarisoy.composepagingapp.domain.FetchCharactersUseCase
 10 | import com.yusufarisoy.composepagingapp.domain.HomePagingSource
 11 | import com.yusufarisoy.composepaging.pagingdata.ComposePagingData
 12 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource
 13 | import com.yusufarisoy.composepagingapp.ui.home.HomeState.Content
 14 | import com.yusufarisoy.composepagingapp.ui.home.HomeState.Error
 15 | import com.yusufarisoy.composepagingapp.ui.home.HomeState.Loading
 16 | import com.yusufarisoy.composepagingapp.util.BaseViewModel
 17 | import com.yusufarisoy.composepagingapp.util.secureLaunch
 18 | import dagger.hilt.android.lifecycle.HiltViewModel
 19 | import kotlinx.coroutines.CoroutineExceptionHandler
 20 | import kotlinx.coroutines.Dispatchers
 21 | import kotlinx.coroutines.flow.StateFlow
 22 | import kotlinx.coroutines.flow.launchIn
 23 | import kotlinx.coroutines.flow.onEach
 24 | import javax.inject.Inject
 25 | 
 26 | @HiltViewModel
 27 | class HomeViewModel @Inject constructor(
 28 |     private val useCase: FetchCharactersUseCase
 29 | ) : BaseViewModel<HomeState, HomeEvent>(Loading) {
 30 | 
 31 |     val feed: ComposePagingData<CharacterUiModel> = ComposePagingData(prefetchDistance = PREFETCH_DISTANCE)
 32 |     private val pager: ComposePager<CharacterUiModel> by lazy {
 33 |         ComposePager(
 34 |             pagingSource = HomePagingSource(
 35 |                 useCase = useCase,
 36 |                 onPageLoaded = ::onPageLoaded
 37 |             ),
 38 |             initialPage = INITIAL_PAGE
 39 |         )
 40 |     }
 41 |     private val pagerExceptionHandler: CoroutineExceptionHandler = CoroutineExceptionHandler { _, throwable ->
 42 |         Log.e("HomeViewModel", "Pager Error: $throwable")
 43 |         onError(throwable)
 44 |     }
 45 | 
 46 |     val loadState: StateFlow<ComposePagingSource.LoadState>
 47 |         get() = pager.loadState
 48 | 
 49 |     init {
 50 |         loadFirstPage()
 51 |         observePagerData()
 52 |     }
 53 | 
 54 |     private fun loadFirstPage() {
 55 |         secureLaunch(dispatcher = Dispatchers.IO, exceptionHandler = pagerExceptionHandler) {
 56 |             pager.loadFirstPage()
 57 |         }
 58 |     }
 59 | 
 60 |     private fun observePagerData() {
 61 |         secureLaunch(Dispatchers.IO, pagerExceptionHandler) {
 62 |             pager.dataFlow
 63 |                 .onEach { page ->
 64 |                     feed.addPage(page)
 65 |                 }
 66 |                 .launchIn(viewModelScope)
 67 |         }
 68 |     }
 69 | 
 70 |     private fun onPageLoaded(itemCount: Int) {
 71 |         setState {
 72 |             Content(HomeUiModel(titleRes = R.string.home_title, itemCount = itemCount))
 73 |         }
 74 |     }
 75 | 
 76 |     fun requestNextPage() {
 77 |         secureLaunch(Dispatchers.IO, pagerExceptionHandler) {
 78 |             pager.loadNextPage()
 79 |         }
 80 |     }
 81 | 
 82 |     fun resetPage() {
 83 |         secureLaunch(Dispatchers.IO, pagerExceptionHandler) {
 84 |             pager.reset()
 85 |         }
 86 |     }
 87 | 
 88 |     fun onFavoriteClicked(id: Int, favorite: Boolean) {
 89 |         val index = feed.items.indexOfFirst { character -> character.id == id }
 90 |         if (index != -1) {
 91 |             feed.items[index] = feed.items[index].copy(favorite = !favorite)
 92 |         }
 93 |     }
 94 | 
 95 |     fun onCharacterRemoved(id: Int) {
 96 |         val index = feed.items.indexOfFirst { character -> character.id == id }
 97 |         if (index != -1) {
 98 |             feed.items.removeAt(index)
 99 |         }
100 |     }
101 | 
102 |     fun onSearchClicked() {
103 |         pushEvent(HomeEvent.OpenSearch)
104 |     }
105 | 
106 |     override fun onError(throwable: Throwable) {
107 |         super.onError(throwable)
108 |         setState {
109 |             Error(errorMessage = "Unexpected error occurred")
110 |         }
111 |     }
112 | 
113 |     companion object {
114 |         private const val PREFETCH_DISTANCE = 2
115 |         private const val INITIAL_PAGE = 1
116 |     }
117 | }
118 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/ui/search/SearchFragment.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.ui.search
 2 | 
 3 | import android.os.Bundle
 4 | import android.view.LayoutInflater
 5 | import android.view.View
 6 | import android.view.ViewGroup
 7 | import androidx.compose.ui.platform.ComposeView
 8 | import androidx.fragment.app.Fragment
 9 | import androidx.fragment.app.viewModels
10 | import com.yusufarisoy.composepagingapp.ui.theme.ComposePagingAppTheme
11 | import com.yusufarisoy.composepagingapp.view.search.SearchScreen
12 | import dagger.hilt.android.AndroidEntryPoint
13 | 
14 | @AndroidEntryPoint
15 | class SearchFragment : Fragment() {
16 | 
17 |     private val viewModel: SearchViewModel by viewModels()
18 | 
19 |     override fun onCreateView(
20 |         inflater: LayoutInflater,
21 |         container: ViewGroup?,
22 |         savedInstanceState: Bundle?
23 |     ): View = ComposeView(requireContext()).apply {
24 |         setContent {
25 |             ComposePagingAppTheme {
26 |                 SearchScreen(viewModel)
27 |             }
28 |         }
29 |     }
30 | }
31 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/ui/search/SearchState.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.ui.search
 2 | 
 3 | import com.yusufarisoy.composepagingapp.data.entity.SearchUiModel
 4 | import com.yusufarisoy.composepagingapp.util.ViewEvent
 5 | import com.yusufarisoy.composepagingapp.util.ViewState
 6 | 
 7 | sealed class SearchState : ViewState {
 8 | 
 9 |     data class Content(val uiModel: SearchUiModel) : SearchState()
10 | 
11 |     data class Error(val errorMessage: String) : SearchState()
12 | }
13 | 
14 | sealed class SearchEvent : ViewEvent
15 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/ui/search/SearchViewModel.kt:
--------------------------------------------------------------------------------
  1 | package com.yusufarisoy.composepagingapp.ui.search
  2 | 
  3 | import android.util.Log
  4 | import androidx.lifecycle.viewModelScope
  5 | import com.yusufarisoy.composepaging.ComposePagerWithQuery
  6 | import com.yusufarisoy.composepagingapp.data.entity.CharacterUiModel
  7 | import com.yusufarisoy.composepagingapp.data.entity.SearchUiModel
  8 | import com.yusufarisoy.composepagingapp.domain.FetchCharactersUseCase
  9 | import com.yusufarisoy.composepagingapp.domain.SearchPagingSource
 10 | import com.yusufarisoy.composepaging.pagingdata.ComposePagingData
 11 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource
 12 | import com.yusufarisoy.composepagingapp.util.BaseViewModel
 13 | import com.yusufarisoy.composepagingapp.util.secureLaunch
 14 | import dagger.hilt.android.lifecycle.HiltViewModel
 15 | import kotlinx.coroutines.CoroutineExceptionHandler
 16 | import kotlinx.coroutines.Dispatchers
 17 | import kotlinx.coroutines.FlowPreview
 18 | import kotlinx.coroutines.flow.MutableStateFlow
 19 | import kotlinx.coroutines.flow.StateFlow
 20 | import kotlinx.coroutines.flow.debounce
 21 | import kotlinx.coroutines.flow.distinctUntilChanged
 22 | import kotlinx.coroutines.flow.onEach
 23 | import kotlinx.coroutines.flow.launchIn
 24 | import javax.inject.Inject
 25 | 
 26 | @HiltViewModel
 27 | class SearchViewModel @Inject constructor(
 28 |     private val useCase: FetchCharactersUseCase
 29 | ) : BaseViewModel<SearchState, SearchEvent>(SearchState.Content(SearchUiModel())) {
 30 | 
 31 |     val feed: ComposePagingData<CharacterUiModel> = ComposePagingData(prefetchDistance = PREFETCH_DISTANCE)
 32 |     private val pager: ComposePagerWithQuery<SearchPagingSource.Params, CharacterUiModel> by lazy {
 33 |         ComposePagerWithQuery(
 34 |             pagingSource = SearchPagingSource(
 35 |                 useCase = useCase
 36 |             )
 37 |         )
 38 |     }
 39 |     private val pagerExceptionHandler: CoroutineExceptionHandler = CoroutineExceptionHandler { _, throwable ->
 40 |         Log.e("SearchViewModel", "Pager Error: $throwable")
 41 |     }
 42 | 
 43 |     private var page: Int = INITIAL_PAGE
 44 |     private val _queryFlow: MutableStateFlow<String> = MutableStateFlow(EMPTY_STRING)
 45 |     val queryFlow: StateFlow<String> = _queryFlow
 46 | 
 47 |     val loadState: StateFlow<ComposePagingSource.LoadState>
 48 |         get() = pager.loadState
 49 | 
 50 |     init {
 51 |         observeQuery()
 52 |         observePagerData()
 53 |     }
 54 | 
 55 |     fun onQueryChanged(query: String) {
 56 |         secureLaunch {
 57 |             _queryFlow.emit(query)
 58 |         }
 59 |     }
 60 | 
 61 |     @OptIn(FlowPreview::class)
 62 |     private fun observeQuery() {
 63 |         secureLaunch(Dispatchers.IO) {
 64 |             _queryFlow
 65 |                 .debounce(DEBOUNCE)
 66 |                 .distinctUntilChanged()
 67 |                 .onEach {
 68 |                     if (it.length > 2) {
 69 |                         search(it)
 70 |                     } else {
 71 |                         clearPage()
 72 |                     }
 73 |                 }
 74 |                 .launchIn(viewModelScope)
 75 |         }
 76 |     }
 77 | 
 78 |     private fun observePagerData() {
 79 |         secureLaunch(Dispatchers.IO, pagerExceptionHandler) {
 80 |             pager.dataFlow
 81 |                 .onEach { page ->
 82 |                     feed.addPage(page)
 83 |                 }
 84 |                 .launchIn(viewModelScope)
 85 |         }
 86 |     }
 87 | 
 88 |     private fun search(query: String) {
 89 |         page = INITIAL_PAGE
 90 |         feed.clear()
 91 |         secureLaunch(Dispatchers.IO, pagerExceptionHandler) {
 92 |             pager.searchPage(SearchPagingSource.Params(page, query))
 93 |         }
 94 |     }
 95 | 
 96 |     fun requestNextPage() {
 97 |         page++
 98 |         secureLaunch(Dispatchers.IO, pagerExceptionHandler) {
 99 |             pager.loadNextPage(SearchPagingSource.Params(page, _queryFlow.value))
100 |         }
101 |     }
102 | 
103 |     private fun clearPage() {
104 |         if (feed.items.isNotEmpty()) {
105 |             page = 0
106 |             feed.clear()
107 |         }
108 |     }
109 | 
110 |     fun onFavoriteClicked(id: Int, favorite: Boolean) {
111 |         val index = feed.items.indexOfFirst { character -> character.id == id }
112 |         if (index != -1) {
113 |             feed.items[index] = feed.items[index].copy(favorite = !favorite)
114 |         }
115 |     }
116 | 
117 |     fun onCharacterRemoved(id: Int, name: String) {
118 |         val index = feed.items.indexOfFirst { character -> character.id == id }
119 |         if (index != -1) {
120 |             feed.items.removeAt(index)
121 |         }
122 |         Log.i("SearchViewModel", "$name removed")
123 |     }
124 | 
125 |     override fun onError(throwable: Throwable) {
126 |         super.onError(throwable)
127 |         setState {
128 |             SearchState.Error(errorMessage = "Unexpected error occurred")
129 |         }
130 |     }
131 | 
132 |     companion object {
133 |         private const val INITIAL_PAGE = 1
134 |         private const val PREFETCH_DISTANCE = 0
135 |         private const val DEBOUNCE = 300L
136 |         private const val EMPTY_STRING = ""
137 |     }
138 | }
139 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/ui/theme/Color.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.ui.theme
 2 | 
 3 | import androidx.compose.ui.graphics.Color
 4 | 
 5 | val Teal200 = Color(0xFF03DAC5)
 6 | val Black = Color(0XFF000000)
 7 | val White = Color(0XFFFFFFFF)
 8 | val Red900 = Color(0XFFB71C1C)
 9 | val Red700 = Color(0XFFF44336)
10 | val Gray900 = Color(0XFF333333)
11 | val Gray700 = Color(0XFF999999)
12 | val Blue900 = Color(0XFF07444A)
13 | val Blue700 = Color(0XFF306364)
14 | val Green = Color(0XFF04CE71)
15 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/ui/theme/Shape.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.ui.theme
 2 | 
 3 | import androidx.compose.foundation.shape.RoundedCornerShape
 4 | import androidx.compose.material.Shapes
 5 | import androidx.compose.ui.unit.dp
 6 | 
 7 | val Shapes = Shapes(
 8 |     small = RoundedCornerShape(4.dp),
 9 |     medium = RoundedCornerShape(8.dp),
10 |     large = RoundedCornerShape(16.dp)
11 | )
12 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/ui/theme/Theme.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.ui.theme
 2 | 
 3 | import androidx.compose.foundation.isSystemInDarkTheme
 4 | import androidx.compose.material.MaterialTheme
 5 | import androidx.compose.material.darkColors
 6 | import androidx.compose.material.lightColors
 7 | import androidx.compose.runtime.Composable
 8 | 
 9 | private val DarkColorPalette = darkColors(
10 |     primary = Blue900,
11 |     primaryVariant = Blue700,
12 |     secondary = Teal200,
13 |     background = White
14 | )
15 | 
16 | private val LightColorPalette = lightColors(
17 |     primary = Blue900,
18 |     primaryVariant = Blue700,
19 |     secondary = Teal200
20 | )
21 | 
22 | @Composable
23 | fun ComposePagingAppTheme(
24 |     darkTheme: Boolean = isSystemInDarkTheme(),
25 |     content: @Composable () -> Unit
26 | ) {
27 |     val colors = if (darkTheme) {
28 |         DarkColorPalette
29 |     } else {
30 |         LightColorPalette
31 |     }
32 | 
33 |     MaterialTheme(
34 |         colors = colors,
35 |         typography = Typography,
36 |         shapes = Shapes,
37 |         content = content
38 |     )
39 | }
40 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/ui/theme/Typography.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.ui.theme
 2 | 
 3 | import androidx.compose.material.Typography
 4 | import androidx.compose.ui.text.TextStyle
 5 | import androidx.compose.ui.text.font.FontFamily
 6 | import androidx.compose.ui.text.font.FontWeight
 7 | import androidx.compose.ui.unit.sp
 8 | 
 9 | val Typography = Typography(
10 |     body1 = TextStyle(
11 |         fontFamily = FontFamily.Default,
12 |         fontWeight = FontWeight.Normal,
13 |         fontSize = 16.sp
14 |     )
15 | )
16 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/util/BaseViewModel.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.util
 2 | 
 3 | import android.util.Log
 4 | import androidx.lifecycle.ViewModel
 5 | import androidx.lifecycle.viewModelScope
 6 | import kotlinx.coroutines.CoroutineExceptionHandler
 7 | import kotlinx.coroutines.channels.Channel
 8 | import kotlinx.coroutines.flow.MutableStateFlow
 9 | import kotlinx.coroutines.flow.StateFlow
10 | import kotlinx.coroutines.flow.Flow
11 | import kotlinx.coroutines.flow.receiveAsFlow
12 | import kotlinx.coroutines.flow.asStateFlow
13 | import kotlinx.coroutines.launch
14 | import kotlinx.coroutines.sync.Mutex
15 | import kotlinx.coroutines.sync.withLock
16 | 
17 | abstract class BaseViewModel<S : ViewState, E : ViewEvent>(initialState: S) : ViewModel() {
18 | 
19 |     private val stateMutex = Mutex()
20 |     private val _stateFlow = MutableStateFlow(initialState)
21 |     val stateFlow: StateFlow<S>
22 |         get() = _stateFlow.asStateFlow()
23 |     val currentState: S
24 |         get() =  _stateFlow.value
25 | 
26 |     private val eventMutex = Mutex()
27 |     private val _eventChannel = Channel<E>()
28 |     val eventFlow: Flow<E>
29 |         get() = _eventChannel.receiveAsFlow()
30 | 
31 |     val exceptionHandler: CoroutineExceptionHandler = CoroutineExceptionHandler { _, throwable -> onError(throwable) }
32 | 
33 |     protected fun setState(reducer: S.() -> S) {
34 |         pushState {
35 |             val newState = reducer(_stateFlow.value)
36 |             _stateFlow.tryEmit(newState)
37 |         }
38 |     }
39 | 
40 |     private fun pushState(action: () -> Unit) {
41 |         viewModelScope.launch {
42 |             stateMutex.withLock {
43 |                 action.invoke()
44 |             }
45 |         }
46 |     }
47 | 
48 |     fun pushEvent(event: E) {
49 |         viewModelScope.launch {
50 |             eventMutex.withLock {
51 |                 _eventChannel.send(event)
52 |             }
53 |         }
54 |     }
55 | 
56 |     open fun onError(throwable: Throwable) {
57 |         Log.e("BaseViewModel ExceptionHandler", throwable.toString())
58 |     }
59 | }
60 | 
61 | interface ViewState
62 | 
63 | interface ViewEvent
64 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/util/BaseViewModelExt.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.util
 2 | 
 3 | import androidx.fragment.app.Fragment
 4 | import androidx.lifecycle.viewModelScope
 5 | import kotlinx.coroutines.CoroutineDispatcher
 6 | import kotlinx.coroutines.CoroutineExceptionHandler
 7 | import kotlinx.coroutines.Dispatchers
 8 | import kotlinx.coroutines.Job
 9 | import kotlinx.coroutines.flow.onEach
10 | import kotlinx.coroutines.launch
11 | 
12 | fun BaseViewModel<*, *>.secureLaunch(
13 |     dispatcher: CoroutineDispatcher = Dispatchers.Main,
14 |     exceptionHandler: CoroutineExceptionHandler = this.exceptionHandler,
15 |     block: suspend () -> Unit
16 | ) {
17 |     viewModelScope.launch(dispatcher + exceptionHandler) {
18 |         block()
19 |     }
20 | }
21 | 
22 | fun <V : BaseViewModel<*, E>, E> Fragment.collectEvent(
23 |     viewModel: V,
24 |     onEventPushed: suspend (E) -> Unit
25 | ): Job {
26 |     return viewModel.eventFlow
27 |         .onEach(onEventPushed)
28 |         .collectIn(viewLifecycleOwner)
29 | }
30 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/util/FlowExt.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.util
 2 | 
 3 | import androidx.lifecycle.Lifecycle
 4 | import androidx.lifecycle.LifecycleOwner
 5 | import androidx.lifecycle.lifecycleScope
 6 | import androidx.lifecycle.repeatOnLifecycle
 7 | import kotlinx.coroutines.CoroutineScope
 8 | import kotlinx.coroutines.Job
 9 | import kotlinx.coroutines.flow.Flow
10 | import kotlinx.coroutines.launch
11 | import kotlin.coroutines.CoroutineContext
12 | import kotlin.coroutines.EmptyCoroutineContext
13 | 
14 | fun <T> Flow<T>.collectIn(
15 |     owner: LifecycleOwner,
16 |     minActiveState: Lifecycle.State = Lifecycle.State.STARTED,
17 |     action: suspend CoroutineScope.(T) -> Unit = {}
18 | ) = owner.addRepeatingJob(minActiveState) {
19 |     collect { action(it) }
20 | }
21 | 
22 | fun LifecycleOwner.addRepeatingJob(
23 |     state: Lifecycle.State,
24 |     coroutineContext: CoroutineContext = EmptyCoroutineContext,
25 |     block: suspend CoroutineScope.() -> Unit
26 | ): Job = lifecycleScope.launch(coroutineContext) {
27 |     repeatOnLifecycle(state, block)
28 | }
29 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/util/Mapper.kt:
--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp.util
 2 | 
 3 | interface Mapper<in Input, out Output> {
 4 |     fun map(input: Input): Output
 5 | }
 6 | 
 7 | fun <MapperClass : Mapper<Input, Output>, Input, Output> Input.mapWith(
 8 |     mapperClass: MapperClass
 9 | ): Output = mapperClass.map(this)
10 | 


--------------------------------------------------------------------------------
/app/src/main/java/com/yusufarisoy/composepagingapp/util/NetworkCall.kt:
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 1 | package com.yusufarisoy.composepagingapp.util
 2 | 
 3 | import retrofit2.Response
 4 | 
 5 | suspend fun <T> getResult(call: suspend () -> Response<T>): NetworkResponse<T> {
 6 |     val response = call()
 7 |     if (response.isSuccessful) {
 8 |         val body = response.body()
 9 |         if (body != null) {
10 |             return NetworkResponse.Success(body)
11 |         }
12 |     }
13 | 
14 |     return NetworkResponse.Error("NetworkCall error")
15 | }
16 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/util/NetworkResponse.kt:
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 1 | package com.yusufarisoy.composepagingapp.util
 2 | 
 3 | sealed class NetworkResponse<out T> {
 4 | 
 5 |     data class Success<T>(val data: T) : NetworkResponse<T>()
 6 | 
 7 |     data class Error<T>(val message: String) : NetworkResponse<T>()
 8 | }
 9 | 
10 | sealed class NetworkError(override val message: String) : Throwable(message) {
11 | 
12 |     data class NetworkCallError(override val message: String) : NetworkError(message)
13 | 
14 |     data class EmptyFeedError(override val message: String) : NetworkError(message)
15 | }
16 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/util/UseCase.kt:
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1 | package com.yusufarisoy.composepagingapp.util
2 | 
3 | interface UseCase<Params, Result> {
4 | 
5 |     suspend fun run(params: Params): Result
6 | }
7 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/view/common/Character.kt:
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  1 | package com.yusufarisoy.composepagingapp.view.common
  2 | 
  3 | import androidx.compose.animation.animateColorAsState
  4 | import androidx.compose.animation.core.animateFloatAsState
  5 | import androidx.compose.foundation.Image
  6 | import androidx.compose.foundation.background
  7 | import androidx.compose.foundation.layout.Arrangement
  8 | import androidx.compose.foundation.layout.Box
  9 | import androidx.compose.foundation.layout.Column
 10 | import androidx.compose.foundation.layout.Row
 11 | import androidx.compose.foundation.layout.fillMaxWidth
 12 | import androidx.compose.foundation.layout.height
 13 | import androidx.compose.foundation.layout.offset
 14 | import androidx.compose.foundation.layout.padding
 15 | import androidx.compose.foundation.layout.size
 16 | import androidx.compose.foundation.layout.widthIn
 17 | import androidx.compose.foundation.shape.RoundedCornerShape
 18 | import androidx.compose.material.DismissDirection
 19 | import androidx.compose.material.DismissValue
 20 | import androidx.compose.material.ExperimentalMaterialApi
 21 | import androidx.compose.material.FractionalThreshold
 22 | import androidx.compose.material.Icon
 23 | import androidx.compose.material.IconButton
 24 | import androidx.compose.material.SwipeToDismiss
 25 | import androidx.compose.material.Text
 26 | import androidx.compose.material.rememberDismissState
 27 | import androidx.compose.runtime.Composable
 28 | import androidx.compose.runtime.getValue
 29 | import androidx.compose.runtime.remember
 30 | import androidx.compose.runtime.rememberCoroutineScope
 31 | import androidx.compose.ui.Alignment
 32 | import androidx.compose.ui.Modifier
 33 | import androidx.compose.ui.draw.clip
 34 | import androidx.compose.ui.draw.scale
 35 | import androidx.compose.ui.draw.shadow
 36 | import androidx.compose.ui.graphics.Color
 37 | import androidx.compose.ui.layout.ContentScale
 38 | import androidx.compose.ui.res.painterResource
 39 | import androidx.compose.ui.res.stringResource
 40 | import androidx.compose.ui.text.font.FontWeight
 41 | import androidx.compose.ui.text.style.TextAlign
 42 | import androidx.compose.ui.unit.dp
 43 | import androidx.compose.ui.unit.sp
 44 | import coil.compose.rememberImagePainter
 45 | import com.yusufarisoy.composepagingapp.R
 46 | import com.yusufarisoy.composepagingapp.data.entity.CharacterUiModel
 47 | import com.yusufarisoy.composepagingapp.ui.theme.Gray900
 48 | import com.yusufarisoy.composepagingapp.ui.theme.Green
 49 | import com.yusufarisoy.composepagingapp.ui.theme.Red700
 50 | import com.yusufarisoy.composepagingapp.ui.theme.Red900
 51 | import com.yusufarisoy.composepagingapp.ui.theme.White
 52 | import kotlinx.coroutines.launch
 53 | 
 54 | @OptIn(ExperimentalMaterialApi::class)
 55 | @Composable
 56 | fun Character(
 57 |     character: CharacterUiModel,
 58 |     modifier: Modifier = Modifier,
 59 |     onFavoriteClicked: (id: Int, favorite: Boolean) -> Unit,
 60 |     onCharacterRemoved: (id: Int, name: String) -> Unit
 61 | ) {
 62 |     val dismissState = rememberDismissState(
 63 |         confirmStateChange = { state ->
 64 |             if (state == DismissValue.DismissedToStart) {
 65 |                 onCharacterRemoved(character.id, character.name)
 66 |             }
 67 |             true
 68 |         }
 69 |     )
 70 |     val dismissScope = rememberCoroutineScope()
 71 |     val dismissColor by animateColorAsState(
 72 |         if (dismissState.targetValue == DismissValue.Default) Gray900 else Red700
 73 |     )
 74 |     val dismissScale by animateFloatAsState(
 75 |         if (dismissState.targetValue == DismissValue.Default) 1f else 1.2f
 76 |     )
 77 |     val (favoriteIcon, favoriteColor) = remember(character) {
 78 |         if (character.favorite) {
 79 |             R.drawable.ic_favorite_fill to Red900
 80 |         } else {
 81 |             R.drawable.ic_favorite_outline to Gray900
 82 |         }
 83 |     }
 84 | 
 85 |     SwipeToDismiss(
 86 |         state = dismissState,
 87 |         directions = setOf(DismissDirection.EndToStart),
 88 |         dismissThresholds = { FractionalThreshold(0.3f) },
 89 |         background = {
 90 |             Box(
 91 |                 modifier = Modifier
 92 |                     .fillMaxWidth()
 93 |                     .height(120.dp)
 94 |                     .background(dismissColor)
 95 |                     .padding(horizontal = 20.dp),
 96 |                 contentAlignment = Alignment.CenterEnd
 97 |             ) {
 98 |                 Icon(
 99 |                     painter = painterResource(R.drawable.ic_delete),
100 |                     contentDescription = stringResource(R.string.swipe_to_delete),
101 |                     modifier = Modifier.scale(dismissScale)
102 |                 )
103 |             }
104 |         }
105 |     ) {
106 |         Row(
107 |             modifier = modifier
108 |                 .fillMaxWidth()
109 |                 .background(White)
110 |         ) {
111 |             CharacterImage(character)
112 | 
113 |             Column(
114 |                 modifier = Modifier
115 |                     .weight(weight = 1f, fill = false)
116 |                     .fillMaxWidth()
117 |                     .padding(vertical = 4.dp, horizontal = 12.dp)
118 |             ) {
119 |                 Text(text = character.name, fontWeight = FontWeight.Bold)
120 |                 CharacterStatus(status = character.status)
121 |                 Text(text = character.gender)
122 |                 Text(text = character.location)
123 |             }
124 | 
125 |             Column(
126 |                 modifier = Modifier.height(120.dp),
127 |                 verticalArrangement = Arrangement.SpaceBetween
128 |             ) {
129 |                 IconButton(onClick = { onFavoriteClicked(character.id, character.favorite) }) {
130 |                     Icon(
131 |                         painter = painterResource(favoriteIcon),
132 |                         contentDescription = stringResource(R.string.favorite_status),
133 |                         tint = favoriteColor
134 |                     )
135 |                 }
136 | 
137 |                 IconButton(
138 |                     onClick = {
139 |                         dismissScope.launch {
140 |                             dismissState.dismiss(DismissDirection.EndToStart)
141 |                             onCharacterRemoved(character.id, character.name)
142 |                         }
143 |                     }
144 |                 ) {
145 |                     Icon(
146 |                         painter = painterResource(R.drawable.ic_swipe_to_delete),
147 |                         contentDescription = stringResource(R.string.swipe_to_delete)
148 |                     )
149 |                 }
150 |             }
151 |         }
152 |     }
153 | }
154 | 
155 | @Composable
156 | private fun CharacterImage(character: CharacterUiModel) {
157 |     Box(
158 |         modifier = Modifier
159 |             .size(120.dp)
160 |             .shadow(4.dp, shape = RoundedCornerShape(16.dp), clip = false)
161 |             .background(color = Color.Transparent, shape = RoundedCornerShape(16.dp))
162 |             .clip(RoundedCornerShape(16.dp))
163 |     ) {
164 |         Image(
165 |             painter = rememberImagePainter(character.image),
166 |             contentDescription = character.name,
167 |             modifier = Modifier
168 |                 .matchParentSize()
169 |                 .align(Alignment.Center),
170 |             contentScale = ContentScale.FillBounds
171 |         )
172 | 
173 |         Text(
174 |             text = character.species,
175 |             modifier = Modifier
176 |                 .widthIn(min = 20.dp, max = 80.dp)
177 |                 .offset(x = (-4).dp, y = 4.dp)
178 |                 .shadow(elevation = 4.dp, shape = RoundedCornerShape(16.dp), clip = false)
179 |                 .background(color = White, shape = RoundedCornerShape(16.dp))
180 |                 .clip(RoundedCornerShape(16.dp))
181 |                 .padding(vertical = 4.dp, horizontal = 8.dp)
182 |                 .align(Alignment.TopEnd),
183 |             fontSize = 12.sp,
184 |             textAlign = TextAlign.Center,
185 |             maxLines = 1,
186 |         )
187 |     }
188 | }
189 | 
190 | @Composable
191 | private fun CharacterStatus(status: String) {
192 |     val color = remember {
193 |         when(status) {
194 |             "Alive" -> Green
195 |             "Dead" -> Red900
196 |             else -> Gray900
197 |         }
198 |     }
199 | 
200 |     Row(
201 |         horizontalArrangement = Arrangement.spacedBy(2.dp),
202 |         verticalAlignment = Alignment.CenterVertically
203 |     ) {
204 |         Icon(
205 |             painter = painterResource(R.drawable.ic_circle),
206 |             contentDescription = status,
207 |             tint = color
208 |         )
209 |         Text(text = status, color = color)
210 |     }
211 | }
212 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/view/common/Error.kt:
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 1 | package com.yusufarisoy.composepagingapp.view.common
 2 | 
 3 | import androidx.compose.foundation.Image
 4 | import androidx.compose.foundation.layout.Arrangement
 5 | import androidx.compose.foundation.layout.Column
 6 | import androidx.compose.foundation.layout.fillMaxSize
 7 | import androidx.compose.material.Button
 8 | import androidx.compose.material.Text
 9 | import androidx.compose.runtime.Composable
10 | import androidx.compose.ui.Alignment
11 | import androidx.compose.ui.Modifier
12 | import androidx.compose.ui.res.painterResource
13 | import androidx.compose.ui.res.stringResource
14 | import com.yusufarisoy.composepagingapp.R
15 | 
16 | @Composable
17 | fun Error(
18 |     message: String,
19 |     modifier: Modifier = Modifier,
20 |     showRetryButton: Boolean = false,
21 |     retry: () -> Unit = {}
22 | ) {
23 |     Column(
24 |         modifier = modifier.fillMaxSize(),
25 |         verticalArrangement = Arrangement.Center,
26 |         horizontalAlignment = Alignment.CenterHorizontally
27 |     ) {
28 |         Image(
29 |             painter = painterResource(R.drawable.ic_launcher_foreground),
30 |             contentDescription = stringResource(R.string.error_state_message)
31 |         )
32 |         Text(text = message)
33 | 
34 |         if (showRetryButton) {
35 |             Button(onClick =  retry) {
36 |                 Text(text = stringResource(R.string.retry_button))
37 |             }
38 |         }
39 |     }
40 | }
41 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/view/common/Loading.kt:
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 1 | package com.yusufarisoy.composepagingapp.view.common
 2 | 
 3 | import androidx.compose.foundation.layout.Arrangement
 4 | import androidx.compose.foundation.layout.Column
 5 | import androidx.compose.foundation.layout.fillMaxSize
 6 | import androidx.compose.material.CircularProgressIndicator
 7 | import androidx.compose.runtime.Composable
 8 | import androidx.compose.ui.Alignment
 9 | import androidx.compose.ui.Modifier
10 | import com.yusufarisoy.composepagingapp.ui.theme.Blue900
11 | 
12 | @Composable
13 | fun Loading(modifier: Modifier = Modifier) {
14 |     Column(
15 |         modifier = modifier.fillMaxSize(),
16 |         verticalArrangement = Arrangement.Center,
17 |         horizontalAlignment = Alignment.CenterHorizontally
18 |     ) {
19 |         CircularProgressIndicator(color = Blue900)
20 |     }
21 | }
22 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/view/home/Home.kt:
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  1 | package com.yusufarisoy.composepagingapp.view.home
  2 | 
  3 | import android.widget.Toast
  4 | import androidx.compose.foundation.background
  5 | import androidx.compose.foundation.layout.Arrangement
  6 | import androidx.compose.foundation.layout.PaddingValues
  7 | import androidx.compose.foundation.layout.Box
  8 | import androidx.compose.foundation.layout.Row
  9 | import androidx.compose.foundation.layout.fillMaxSize
 10 | import androidx.compose.foundation.layout.fillMaxWidth
 11 | import androidx.compose.foundation.lazy.LazyColumn
 12 | import androidx.compose.material.CircularProgressIndicator
 13 | import androidx.compose.material.Icon
 14 | import androidx.compose.material.IconButton
 15 | import androidx.compose.material.Scaffold
 16 | import androidx.compose.material.Text
 17 | import androidx.compose.material.rememberScaffoldState
 18 | import androidx.compose.runtime.Composable
 19 | import androidx.compose.runtime.remember
 20 | import androidx.compose.runtime.collectAsState
 21 | import androidx.compose.runtime.getValue
 22 | import androidx.compose.runtime.rememberCoroutineScope
 23 | import androidx.compose.ui.Alignment
 24 | import androidx.compose.ui.Modifier
 25 | import androidx.compose.ui.platform.LocalContext
 26 | import androidx.compose.ui.res.painterResource
 27 | import androidx.compose.ui.res.stringResource
 28 | import androidx.compose.ui.text.font.FontWeight
 29 | import androidx.compose.ui.text.style.TextAlign
 30 | import androidx.compose.ui.unit.dp
 31 | import androidx.compose.ui.unit.sp
 32 | import com.yusufarisoy.composepagingapp.R
 33 | import com.yusufarisoy.composepagingapp.data.entity.CharacterUiModel
 34 | import com.yusufarisoy.composepagingapp.data.entity.HomeUiModel
 35 | import com.yusufarisoy.composepaging.items
 36 | import com.yusufarisoy.composepaging.pagingdata.ComposePagingData
 37 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource
 38 | import com.yusufarisoy.composepagingapp.view.common.Error
 39 | import com.yusufarisoy.composepagingapp.ui.home.HomeState.Loading
 40 | import com.yusufarisoy.composepagingapp.ui.home.HomeState.Content
 41 | import com.yusufarisoy.composepagingapp.ui.home.HomeState.Error
 42 | import com.yusufarisoy.composepagingapp.ui.home.HomeViewModel
 43 | import com.yusufarisoy.composepagingapp.ui.theme.Blue900
 44 | import com.yusufarisoy.composepagingapp.ui.theme.White
 45 | import com.yusufarisoy.composepagingapp.view.common.Character
 46 | import com.yusufarisoy.composepagingapp.view.common.Loading
 47 | import kotlinx.coroutines.launch
 48 | 
 49 | @Composable
 50 | fun HomeScreen(viewModel: HomeViewModel) {
 51 |     val state by viewModel.stateFlow.collectAsState()
 52 |     val loadState by viewModel.loadState.collectAsState()
 53 |     val scaffoldState = rememberScaffoldState()
 54 |     val scaffoldScope = rememberCoroutineScope()
 55 |     val context = LocalContext.current
 56 |     val requestNextPage = remember {
 57 |         {
 58 |             viewModel.requestNextPage()
 59 |             Toast.makeText(context, "New Page Requested", Toast.LENGTH_LONG).show()
 60 |         }
 61 |     }
 62 |     val onCharacterRemoved = remember<(Int, String) -> Unit> {
 63 |         { id, name ->
 64 |             viewModel.onCharacterRemoved(id)
 65 |             scaffoldScope.launch {
 66 |                 scaffoldState.snackbarHostState.showSnackbar("$name removed")
 67 |             }
 68 |         }
 69 |     }
 70 | 
 71 |     Scaffold(
 72 |         modifier = Modifier.fillMaxSize(),
 73 |         scaffoldState = scaffoldState
 74 |     ) {
 75 |         Box(modifier = Modifier.fillMaxSize()) {
 76 |             when {
 77 |                 state is Loading && loadState is ComposePagingSource.LoadState.Initial -> Loading()
 78 |                 state is Error || loadState is ComposePagingSource.LoadState.Error -> Error(
 79 |                     message = (state as Error).errorMessage,
 80 |                     showRetryButton = true,
 81 |                     retry = viewModel::resetPage
 82 |                 )
 83 |                 state is Content -> ContentState(
 84 |                     uiModel = (state as Content).uiModel,
 85 |                     feed = viewModel.feed,
 86 |                     requestNextPage = requestNextPage,
 87 |                     onFavoriteClicked = viewModel::onFavoriteClicked,
 88 |                     onCharacterRemoved = onCharacterRemoved,
 89 |                     onSearchClicked = viewModel::onSearchClicked
 90 |                 )
 91 |             }
 92 | 
 93 |             // Shows ProgressBar at the bottom only when new page is loading
 94 |             if (loadState is ComposePagingSource.LoadState.Loading) {
 95 |                 CircularProgressIndicator(
 96 |                     modifier = Modifier.align(Alignment.BottomCenter),
 97 |                     color = Blue900
 98 |                 )
 99 |             }
100 |         }
101 |     }
102 | }
103 | 
104 | @Composable
105 | private fun ContentState(
106 |     uiModel: HomeUiModel,
107 |     feed: ComposePagingData<CharacterUiModel>,
108 |     requestNextPage: () -> Unit,
109 |     onFavoriteClicked: (id: Int, favorite: Boolean) -> Unit,
110 |     onCharacterRemoved: (id: Int, name: String) -> Unit,
111 |     onSearchClicked: () -> Unit
112 | ) {
113 |     LazyColumn(
114 |         modifier = Modifier
115 |             .fillMaxSize()
116 |             .background(White),
117 |         contentPadding = PaddingValues(8.dp),
118 |         verticalArrangement = Arrangement.spacedBy(16.dp)
119 |     ) {
120 |         item(key = "home_header") {
121 |             Header(onSearchClicked)
122 |         }
123 | 
124 |         item(key = "home_characters_title") {
125 |             CharactersTitle(uiModel)
126 |         }
127 | 
128 |         items(
129 |             feed = feed,
130 |             requestNextPage = requestNextPage,
131 |             key = { character -> character.id }
132 |         ) { item ->
133 |             Character(
134 |                 character = item,
135 |                 onFavoriteClicked = onFavoriteClicked,
136 |                 onCharacterRemoved = onCharacterRemoved
137 |             )
138 |         }
139 |     }
140 | }
141 | 
142 | @Composable
143 | private fun Header(onSearchClicked: () -> Unit) {
144 |     Box(modifier = Modifier.fillMaxWidth()) {
145 |         Text(
146 |             text = stringResource(R.string.app_name),
147 |             modifier = Modifier.align(Alignment.Center),
148 |             fontSize = 20.sp,
149 |             fontWeight = FontWeight.Bold,
150 |             textAlign = TextAlign.Center
151 |         )
152 |         IconButton(
153 |             onClick = onSearchClicked,
154 |             modifier = Modifier.align(Alignment.CenterEnd)
155 |         ) {
156 |             Icon(
157 |                 painter = painterResource(R.drawable.ic_search),
158 |                 contentDescription = stringResource(R.string.search_button)
159 |             )
160 |         }
161 |     }
162 | }
163 | 
164 | @Composable
165 | private fun CharactersTitle(uiModel: HomeUiModel) {
166 |     Row(
167 |         modifier = Modifier.fillMaxWidth(),
168 |         horizontalArrangement = Arrangement.SpaceBetween,
169 |         verticalAlignment = Alignment.CenterVertically
170 |     ) {
171 |         Text(
172 |             text = stringResource(id = uiModel.titleRes),
173 |             fontWeight = FontWeight.Bold
174 |         )
175 |         Text(text = uiModel.itemCount.toString(), fontWeight = FontWeight.Light)
176 |     }
177 | }
178 | 


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/app/src/main/java/com/yusufarisoy/composepagingapp/view/search/Search.kt:
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  1 | package com.yusufarisoy.composepagingapp.view.search
  2 | 
  3 | import android.widget.Toast
  4 | import androidx.compose.foundation.Image
  5 | import androidx.compose.foundation.background
  6 | import androidx.compose.foundation.border
  7 | import androidx.compose.foundation.layout.Arrangement
  8 | import androidx.compose.foundation.layout.Box
  9 | import androidx.compose.foundation.layout.Column
 10 | import androidx.compose.foundation.layout.PaddingValues
 11 | import androidx.compose.foundation.layout.Row
 12 | import androidx.compose.foundation.layout.Spacer
 13 | import androidx.compose.foundation.layout.fillMaxSize
 14 | import androidx.compose.foundation.layout.fillMaxWidth
 15 | import androidx.compose.foundation.layout.height
 16 | import androidx.compose.foundation.lazy.LazyColumn
 17 | import androidx.compose.foundation.shape.RoundedCornerShape
 18 | import androidx.compose.material.CircularProgressIndicator
 19 | import androidx.compose.material.Icon
 20 | import androidx.compose.material.Scaffold
 21 | import androidx.compose.material.Text
 22 | import androidx.compose.material.TextField
 23 | import androidx.compose.material.TextFieldDefaults
 24 | import androidx.compose.runtime.Composable
 25 | import androidx.compose.runtime.collectAsState
 26 | import androidx.compose.runtime.getValue
 27 | import androidx.compose.runtime.remember
 28 | import androidx.compose.ui.Alignment
 29 | import androidx.compose.ui.Modifier
 30 | import androidx.compose.ui.draw.clip
 31 | import androidx.compose.ui.draw.shadow
 32 | import androidx.compose.ui.graphics.Color
 33 | import androidx.compose.ui.platform.LocalContext
 34 | import androidx.compose.ui.res.painterResource
 35 | import androidx.compose.ui.res.stringResource
 36 | import androidx.compose.ui.text.font.FontWeight
 37 | import androidx.compose.ui.text.style.TextAlign
 38 | import androidx.compose.ui.unit.dp
 39 | import androidx.compose.ui.unit.sp
 40 | import com.yusufarisoy.composepagingapp.R
 41 | import com.yusufarisoy.composepagingapp.data.entity.CharacterUiModel
 42 | import com.yusufarisoy.composepagingapp.data.entity.SearchUiModel
 43 | import com.yusufarisoy.composepaging.items
 44 | import com.yusufarisoy.composepaging.pagingdata.ComposePagingData
 45 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource
 46 | import com.yusufarisoy.composepagingapp.ui.search.SearchState.Content
 47 | import com.yusufarisoy.composepagingapp.ui.search.SearchState.Error
 48 | import com.yusufarisoy.composepagingapp.ui.search.SearchViewModel
 49 | import com.yusufarisoy.composepagingapp.ui.theme.Blue900
 50 | import com.yusufarisoy.composepagingapp.ui.theme.Gray900
 51 | import com.yusufarisoy.composepagingapp.ui.theme.White
 52 | import com.yusufarisoy.composepagingapp.view.common.Character
 53 | import com.yusufarisoy.composepagingapp.view.common.Error
 54 | 
 55 | @Composable
 56 | fun SearchScreen(viewModel: SearchViewModel) {
 57 |     val state by viewModel.stateFlow.collectAsState()
 58 |     val loadState by viewModel.loadState.collectAsState()
 59 |     val searchQuery by viewModel.queryFlow.collectAsState()
 60 |     val context = LocalContext.current
 61 |     val requestNextPage = remember {
 62 |         {
 63 |             viewModel.requestNextPage()
 64 |             Toast.makeText(context, "New Page Requested", Toast.LENGTH_LONG).show()
 65 |         }
 66 |     }
 67 | 
 68 |     Scaffold(modifier = Modifier.fillMaxSize()) {
 69 |         Box(modifier = Modifier.fillMaxSize()) {
 70 |             when {
 71 |                 state is Error || loadState is ComposePagingSource.LoadState.Error -> Error(
 72 |                     message = (state as Error).errorMessage
 73 |                 )
 74 |                 state is Content -> ContentState(
 75 |                     uiModel = (state as Content).uiModel,
 76 |                     feed = viewModel.feed,
 77 |                     searchQuery = { searchQuery },
 78 |                     onQueryChanged = viewModel::onQueryChanged,
 79 |                     requestNextPage = requestNextPage,
 80 |                     onFavoriteClicked = viewModel::onFavoriteClicked,
 81 |                     onCharacterRemoved = viewModel::onCharacterRemoved
 82 |                 )
 83 |             }
 84 | 
 85 |             if (loadState is ComposePagingSource.LoadState.Loading) {
 86 |                 CircularProgressIndicator(
 87 |                     modifier = Modifier.align(Alignment.BottomCenter),
 88 |                     color = Blue900
 89 |                 )
 90 |             }
 91 |         }
 92 |     }
 93 | }
 94 | 
 95 | @Composable
 96 | private fun ContentState(
 97 |     uiModel: SearchUiModel,
 98 |     feed: ComposePagingData<CharacterUiModel>,
 99 |     modifier: Modifier = Modifier,
100 |     searchQuery: () -> String,
101 |     onQueryChanged: (String) -> Unit,
102 |     requestNextPage: () -> Unit,
103 |     onFavoriteClicked: (id: Int, favorite: Boolean) -> Unit,
104 |     onCharacterRemoved: (id: Int, name: String) -> Unit
105 | ) {
106 |     LazyColumn(
107 |         modifier = modifier
108 |             .fillMaxSize()
109 |             .background(White),
110 |         contentPadding = PaddingValues(8.dp),
111 |         verticalArrangement = Arrangement.spacedBy(16.dp)
112 |     ) {
113 |         item(key = "home_header") {
114 |             Text(
115 |                 text = stringResource(R.string.app_name),
116 |                 modifier = Modifier.fillMaxWidth(),
117 |                 fontSize = 20.sp,
118 |                 fontWeight = FontWeight.Bold,
119 |                 textAlign = TextAlign.Center
120 |             )
121 |         }
122 | 
123 |         item(key = "search_bar") {
124 |             SearchBar(
125 |                 query = searchQuery,
126 |                 onQueryChanged = onQueryChanged
127 |             )
128 |         }
129 | 
130 |         if (feed.items.size == 0) {
131 |             item(key = "search_empty_placeholder") {
132 |                 PlaceHolder()
133 |             }
134 |         }
135 | 
136 |         if (uiModel.itemCount != null) {
137 |             item(key = "search_title") {
138 |                 Row(
139 |                     modifier = Modifier.fillMaxWidth(),
140 |                     horizontalArrangement = Arrangement.SpaceBetween,
141 |                     verticalAlignment = Alignment.CenterVertically
142 |                 ) {
143 |                     Text(
144 |                         text = stringResource(R.string.search_title, uiModel.itemCount),
145 |                         fontWeight = FontWeight.Bold
146 |                     )
147 |                     Text(text = uiModel.itemCount.toString(), fontWeight = FontWeight.Light)
148 |                 }
149 |             }
150 |         }
151 | 
152 |         items(
153 |             feed = feed,
154 |             requestNextPage = requestNextPage,
155 |             key = { character -> character.id }
156 |         ) { item ->
157 |             Character(
158 |                 character = item,
159 |                 onFavoriteClicked = onFavoriteClicked,
160 |                 onCharacterRemoved = onCharacterRemoved
161 |             )
162 |         }
163 |     }
164 | }
165 | 
166 | @Composable
167 | private fun SearchBar(
168 |     modifier: Modifier = Modifier,
169 |     query: () -> String,
170 |     onQueryChanged: (String) -> Unit
171 | ) {
172 |     TextField(
173 |         value = query(),
174 |         onValueChange = onQueryChanged,
175 |         modifier = modifier
176 |             .fillMaxWidth()
177 |             .border(width = 1.dp, color = Gray900, shape = RoundedCornerShape(16.dp)),
178 |         leadingIcon = {
179 |             Icon(
180 |                 painter = painterResource(R.drawable.ic_search),
181 |                 contentDescription = stringResource(R.string.search_button)
182 |             )
183 |         },
184 |         singleLine = true,
185 |         shape = RoundedCornerShape(16.dp),
186 |         colors = TextFieldDefaults.textFieldColors(
187 |             backgroundColor = White,
188 |             leadingIconColor = Blue900,
189 |             focusedIndicatorColor = Color.Transparent,
190 |             unfocusedIndicatorColor = Color.Transparent,
191 |             disabledIndicatorColor = Color.Transparent
192 |         )
193 |     )
194 | }
195 | 
196 | @Composable
197 | private fun PlaceHolder() {
198 |     Column(
199 |         modifier = Modifier.fillMaxWidth(),
200 |         verticalArrangement = Arrangement.Center,
201 |         horizontalAlignment = Alignment.CenterHorizontally
202 |     ) {
203 |         Box(
204 |             modifier = Modifier
205 |                 .shadow(4.dp, shape = RoundedCornerShape(16.dp), clip = false)
206 |                 .background(color = Color.Transparent, shape = RoundedCornerShape(16.dp))
207 |                 .clip(RoundedCornerShape(16.dp))
208 |         ) {
209 |             Image(
210 |                 painter = painterResource(R.drawable.search_placeholder),
211 |                 contentDescription = stringResource(R.string.search_button)
212 |             )
213 |         }
214 |         Spacer(modifier = Modifier.height(8.dp))
215 | 
216 |         Text(text = stringResource(R.string.search_placeholder), color = Gray900)
217 |     }
218 | }
219 | 


--------------------------------------------------------------------------------
/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
--------------------------------------------------------------------------------
 1 | <vector xmlns:android="http://schemas.android.com/apk/res/android"
 2 |     xmlns:aapt="http://schemas.android.com/aapt"
 3 |     android:width="108dp"
 4 |     android:height="108dp"
 5 |     android:viewportWidth="108"
 6 |     android:viewportHeight="108">
 7 |     <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
 8 |         <aapt:attr name="android:fillColor">
 9 |             <gradient
10 |                 android:endX="85.84757"
11 |                 android:endY="92.4963"
12 |                 android:startX="42.9492"
13 |                 android:startY="49.59793"
14 |                 android:type="linear">
15 |                 <item
16 |                     android:color="#44000000"
17 |                     android:offset="0.0" />
18 |                 <item
19 |                     android:color="#00000000"
20 |                     android:offset="1.0" />
21 |             </gradient>
22 |         </aapt:attr>
23 |     </path>
24 |     <path
25 |         android:fillColor="#FFFFFF"
26 |         android:fillType="nonZero"
27 |         android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
28 |         android:strokeWidth="1"
29 |         android:strokeColor="#00000000" />
30 | </vector>


--------------------------------------------------------------------------------
/app/src/main/res/drawable/ic_circle.xml:
--------------------------------------------------------------------------------
1 | <vector android:height="16dp" android:tint="#333333"
2 |     android:viewportHeight="24" android:viewportWidth="24"
3 |     android:width="16dp" xmlns:android="http://schemas.android.com/apk/res/android">
4 |     <path android:fillColor="@android:color/white" android:pathData="M12,2C6.47,2 2,6.47 2,12s4.47,10 10,10 10,-4.47 10,-10S17.53,2 12,2z"/>
5 | </vector>
6 | 


--------------------------------------------------------------------------------
/app/src/main/res/drawable/ic_delete.xml:
--------------------------------------------------------------------------------
1 | <vector android:height="24dp" android:tint="#333333"
2 |     android:viewportHeight="24" android:viewportWidth="24"
3 |     android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
4 |     <path android:fillColor="@android:color/white" android:pathData="M6,19c0,1.1 0.9,2 2,2h8c1.1,0 2,-0.9 2,-2V7H6v12zM19,4h-3.5l-1,-1h-5l-1,1H5v2h14V4z"/>
5 | </vector>
6 | 


--------------------------------------------------------------------------------
/app/src/main/res/drawable/ic_favorite_fill.xml:
--------------------------------------------------------------------------------
1 | <vector android:height="24dp" android:tint="#B71C1C"
2 |     android:viewportHeight="24" android:viewportWidth="24"
3 |     android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
4 |     <path android:fillColor="@android:color/white" android:pathData="M12,21.35l-1.45,-1.32C5.4,15.36 2,12.28 2,8.5 2,5.42 4.42,3 7.5,3c1.74,0 3.41,0.81 4.5,2.09C13.09,3.81 14.76,3 16.5,3 19.58,3 22,5.42 22,8.5c0,3.78 -3.4,6.86 -8.55,11.54L12,21.35z"/>
5 | </vector>
6 | 


--------------------------------------------------------------------------------
/app/src/main/res/drawable/ic_favorite_outline.xml:
--------------------------------------------------------------------------------
1 | <vector android:height="24dp" android:tint="#333333"
2 |     android:viewportHeight="24" android:viewportWidth="24"
3 |     android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
4 |     <path android:fillColor="@android:color/white" android:pathData="M16.5,3c-1.74,0 -3.41,0.81 -4.5,2.09C10.91,3.81 9.24,3 7.5,3 4.42,3 2,5.42 2,8.5c0,3.78 3.4,6.86 8.55,11.54L12,21.35l1.45,-1.32C18.6,15.36 22,12.28 22,8.5 22,5.42 19.58,3 16.5,3zM12.1,18.55l-0.1,0.1 -0.1,-0.1C7.14,14.24 4,11.39 4,8.5 4,6.5 5.5,5 7.5,5c1.54,0 3.04,0.99 3.57,2.36h1.87C13.46,5.99 14.96,5 16.5,5c2,0 3.5,1.5 3.5,3.5 0,2.89 -3.14,5.74 -7.9,10.05z"/>
5 | </vector>
6 | 


--------------------------------------------------------------------------------
/app/src/main/res/drawable/ic_launcher_background.xml:
--------------------------------------------------------------------------------
  1 | <?xml version="1.0" encoding="utf-8"?>
  2 | <vector xmlns:android="http://schemas.android.com/apk/res/android"
  3 |     android:width="108dp"
  4 |     android:height="108dp"
  5 |     android:viewportWidth="108"
  6 |     android:viewportHeight="108">
  7 |     <path
  8 |         android:fillColor="#3DDC84"
  9 |         android:pathData="M0,0h108v108h-108z" />
 10 |     <path
 11 |         android:fillColor="#00000000"
 12 |         android:pathData="M9,0L9,108"
 13 |         android:strokeWidth="0.8"
 14 |         android:strokeColor="#33FFFFFF" />
 15 |     <path
 16 |         android:fillColor="#00000000"
 17 |         android:pathData="M19,0L19,108"
 18 |         android:strokeWidth="0.8"
 19 |         android:strokeColor="#33FFFFFF" />
 20 |     <path
 21 |         android:fillColor="#00000000"
 22 |         android:pathData="M29,0L29,108"
 23 |         android:strokeWidth="0.8"
 24 |         android:strokeColor="#33FFFFFF" />
 25 |     <path
 26 |         android:fillColor="#00000000"
 27 |         android:pathData="M39,0L39,108"
 28 |         android:strokeWidth="0.8"
 29 |         android:strokeColor="#33FFFFFF" />
 30 |     <path
 31 |         android:fillColor="#00000000"
 32 |         android:pathData="M49,0L49,108"
 33 |         android:strokeWidth="0.8"
 34 |         android:strokeColor="#33FFFFFF" />
 35 |     <path
 36 |         android:fillColor="#00000000"
 37 |         android:pathData="M59,0L59,108"
 38 |         android:strokeWidth="0.8"
 39 |         android:strokeColor="#33FFFFFF" />
 40 |     <path
 41 |         android:fillColor="#00000000"
 42 |         android:pathData="M69,0L69,108"
 43 |         android:strokeWidth="0.8"
 44 |         android:strokeColor="#33FFFFFF" />
 45 |     <path
 46 |         android:fillColor="#00000000"
 47 |         android:pathData="M79,0L79,108"
 48 |         android:strokeWidth="0.8"
 49 |         android:strokeColor="#33FFFFFF" />
 50 |     <path
 51 |         android:fillColor="#00000000"
 52 |         android:pathData="M89,0L89,108"
 53 |         android:strokeWidth="0.8"
 54 |         android:strokeColor="#33FFFFFF" />
 55 |     <path
 56 |         android:fillColor="#00000000"
 57 |         android:pathData="M99,0L99,108"
 58 |         android:strokeWidth="0.8"
 59 |         android:strokeColor="#33FFFFFF" />
 60 |     <path
 61 |         android:fillColor="#00000000"
 62 |         android:pathData="M0,9L108,9"
 63 |         android:strokeWidth="0.8"
 64 |         android:strokeColor="#33FFFFFF" />
 65 |     <path
 66 |         android:fillColor="#00000000"
 67 |         android:pathData="M0,19L108,19"
 68 |         android:strokeWidth="0.8"
 69 |         android:strokeColor="#33FFFFFF" />
 70 |     <path
 71 |         android:fillColor="#00000000"
 72 |         android:pathData="M0,29L108,29"
 73 |         android:strokeWidth="0.8"
 74 |         android:strokeColor="#33FFFFFF" />
 75 |     <path
 76 |         android:fillColor="#00000000"
 77 |         android:pathData="M0,39L108,39"
 78 |         android:strokeWidth="0.8"
 79 |         android:strokeColor="#33FFFFFF" />
 80 |     <path
 81 |         android:fillColor="#00000000"
 82 |         android:pathData="M0,49L108,49"
 83 |         android:strokeWidth="0.8"
 84 |         android:strokeColor="#33FFFFFF" />
 85 |     <path
 86 |         android:fillColor="#00000000"
 87 |         android:pathData="M0,59L108,59"
 88 |         android:strokeWidth="0.8"
 89 |         android:strokeColor="#33FFFFFF" />
 90 |     <path
 91 |         android:fillColor="#00000000"
 92 |         android:pathData="M0,69L108,69"
 93 |         android:strokeWidth="0.8"
 94 |         android:strokeColor="#33FFFFFF" />
 95 |     <path
 96 |         android:fillColor="#00000000"
 97 |         android:pathData="M0,79L108,79"
 98 |         android:strokeWidth="0.8"
 99 |         android:strokeColor="#33FFFFFF" />
100 |     <path
101 |         android:fillColor="#00000000"
102 |         android:pathData="M0,89L108,89"
103 |         android:strokeWidth="0.8"
104 |         android:strokeColor="#33FFFFFF" />
105 |     <path
106 |         android:fillColor="#00000000"
107 |         android:pathData="M0,99L108,99"
108 |         android:strokeWidth="0.8"
109 |         android:strokeColor="#33FFFFFF" />
110 |     <path
111 |         android:fillColor="#00000000"
112 |         android:pathData="M19,29L89,29"
113 |         android:strokeWidth="0.8"
114 |         android:strokeColor="#33FFFFFF" />
115 |     <path
116 |         android:fillColor="#00000000"
117 |         android:pathData="M19,39L89,39"
118 |         android:strokeWidth="0.8"
119 |         android:strokeColor="#33FFFFFF" />
120 |     <path
121 |         android:fillColor="#00000000"
122 |         android:pathData="M19,49L89,49"
123 |         android:strokeWidth="0.8"
124 |         android:strokeColor="#33FFFFFF" />
125 |     <path
126 |         android:fillColor="#00000000"
127 |         android:pathData="M19,59L89,59"
128 |         android:strokeWidth="0.8"
129 |         android:strokeColor="#33FFFFFF" />
130 |     <path
131 |         android:fillColor="#00000000"
132 |         android:pathData="M19,69L89,69"
133 |         android:strokeWidth="0.8"
134 |         android:strokeColor="#33FFFFFF" />
135 |     <path
136 |         android:fillColor="#00000000"
137 |         android:pathData="M19,79L89,79"
138 |         android:strokeWidth="0.8"
139 |         android:strokeColor="#33FFFFFF" />
140 |     <path
141 |         android:fillColor="#00000000"
142 |         android:pathData="M29,19L29,89"
143 |         android:strokeWidth="0.8"
144 |         android:strokeColor="#33FFFFFF" />
145 |     <path
146 |         android:fillColor="#00000000"
147 |         android:pathData="M39,19L39,89"
148 |         android:strokeWidth="0.8"
149 |         android:strokeColor="#33FFFFFF" />
150 |     <path
151 |         android:fillColor="#00000000"
152 |         android:pathData="M49,19L49,89"
153 |         android:strokeWidth="0.8"
154 |         android:strokeColor="#33FFFFFF" />
155 |     <path
156 |         android:fillColor="#00000000"
157 |         android:pathData="M59,19L59,89"
158 |         android:strokeWidth="0.8"
159 |         android:strokeColor="#33FFFFFF" />
160 |     <path
161 |         android:fillColor="#00000000"
162 |         android:pathData="M69,19L69,89"
163 |         android:strokeWidth="0.8"
164 |         android:strokeColor="#33FFFFFF" />
165 |     <path
166 |         android:fillColor="#00000000"
167 |         android:pathData="M79,19L79,89"
168 |         android:strokeWidth="0.8"
169 |         android:strokeColor="#33FFFFFF" />
170 | </vector>
171 | 


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/app/src/main/res/drawable/ic_search.xml:
--------------------------------------------------------------------------------
1 | <vector android:height="24dp" android:tint="#333333"
2 |     android:viewportHeight="24" android:viewportWidth="24"
3 |     android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
4 |     <path android:fillColor="@android:color/white" android:pathData="M15.5,14h-0.79l-0.28,-0.27C15.41,12.59 16,11.11 16,9.5 16,5.91 13.09,3 9.5,3S3,5.91 3,9.5 5.91,16 9.5,16c1.61,0 3.09,-0.59 4.23,-1.57l0.27,0.28v0.79l5,4.99L20.49,19l-4.99,-5zM9.5,14C7.01,14 5,11.99 5,9.5S7.01,5 9.5,5 14,7.01 14,9.5 11.99,14 9.5,14z"/>
5 | </vector>
6 | 


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/app/src/main/res/drawable/ic_swipe_to_delete.xml:
--------------------------------------------------------------------------------
1 | <vector android:height="24dp" android:tint="#333333"
2 |     android:viewportHeight="24" android:viewportWidth="24"
3 |     android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
4 |     <path android:fillColor="@android:color/white" android:pathData="M15,16h4v2h-4zM15,8h7v2h-7zM15,12h6v2h-6zM3,18c0,1.1 0.9,2 2,2h6c1.1,0 2,-0.9 2,-2L13,8L3,8v10zM14,5h-3l-1,-1L6,4L5,5L2,5v2h12z"/>
5 | </vector>
6 | 


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/app/src/main/res/drawable/search_placeholder.png:
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https://raw.githubusercontent.com/yusufarisoy/compose-paging/b1e07775867087e9e4ad57ceb2ce2ed80dc76670/app/src/main/res/drawable/search_placeholder.png


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/app/src/main/res/layout/activity_main.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <androidx.fragment.app.FragmentContainerView
3 |     xmlns:android="http://schemas.android.com/apk/res/android"
4 |     android:id="@+id/fragment_container"
5 |     android:layout_width="match_parent"
6 |     android:layout_height="match_parent" />


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/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
3 |     <background android:drawable="@drawable/ic_launcher_background" />
4 |     <foreground android:drawable="@drawable/ic_launcher_foreground" />
5 | </adaptive-icon>


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/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml:
--------------------------------------------------------------------------------
1 | <?xml version="1.0" encoding="utf-8"?>
2 | <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
3 |     <background android:drawable="@drawable/ic_launcher_background" />
4 |     <foreground android:drawable="@drawable/ic_launcher_foreground" />
5 | </adaptive-icon>


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/app/src/main/res/mipmap-hdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp:
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/app/src/main/res/mipmap-mdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp:
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/app/src/main/res/mipmap-xhdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp:
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/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp:
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/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp:
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/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp:
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/app/src/main/res/values-night/themes.xml:
--------------------------------------------------------------------------------
1 | <resources xmlns:tools="http://schemas.android.com/tools">
2 |     <!-- Base application theme. -->
3 |     <style name="Theme.ComposePaging" parent="Theme.AppCompat.Light.NoActionBar">
4 |         <!-- Primary brand color. -->
5 |         <item name="colorPrimary">@color/purple_200</item>
6 |         <!-- Customize your theme here. -->
7 |     </style>
8 | </resources>


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/app/src/main/res/values/colors.xml:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?>
 2 | <resources>
 3 |     <color name="purple_200">#FFBB86FC</color>
 4 |     <color name="purple_500">#FF6200EE</color>
 5 |     <color name="purple_700">#FF3700B3</color>
 6 |     <color name="teal_200">#FF03DAC5</color>
 7 |     <color name="teal_700">#FF018786</color>
 8 |     <color name="black">#FF000000</color>
 9 |     <color name="white">#FFFFFFFF</color>
10 | </resources>


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/app/src/main/res/values/strings.xml:
--------------------------------------------------------------------------------
 1 | <resources>
 2 |     <string name="app_name">ComposePaging</string>
 3 |     <string name="error_state_message">Unknown error</string>
 4 |     <string name="retry_button">Retry</string>
 5 |     <string name="home_title">Characters</string>
 6 |     <string name="swipe_to_delete">Swipe to delete</string>
 7 |     <string name="favorite_status">Change favorite status</string>
 8 |     <string name="search_button">Search</string>
 9 |     <string name="search_title">%1d characters found</string>
10 |     <string name="search_field_placeholder">Search your favorite characters</string>
11 |     <string name="search_placeholder">Search your favorite Rick and Morty characters</string>
12 | </resources>


--------------------------------------------------------------------------------
/app/src/main/res/values/themes.xml:
--------------------------------------------------------------------------------
1 | <resources xmlns:tools="http://schemas.android.com/tools">
2 |     <!-- Base application theme. -->
3 |     <style name="Theme.ComposePaging" parent="Theme.AppCompat.Light.NoActionBar">
4 |         <!-- Primary brand color. -->
5 |         <item name="colorPrimary">@color/purple_500</item>
6 |     </style>
7 | </resources>


--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?><!--
 2 |    Sample backup rules file; uncomment and customize as necessary.
 3 |    See https://developer.android.com/guide/topics/data/autobackup
 4 |    for details.
 5 |    Note: This file is ignored for devices older that API 31
 6 |    See https://developer.android.com/about/versions/12/backup-restore
 7 | -->
 8 | <full-backup-content>
 9 |     <!--
10 |    <include domain="sharedpref" path="."/>
11 |    <exclude domain="sharedpref" path="device.xml"/>
12 | -->
13 | </full-backup-content>


--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="utf-8"?><!--
 2 |    Sample data extraction rules file; uncomment and customize as necessary.
 3 |    See https://developer.android.com/about/versions/12/backup-restore#xml-changes
 4 |    for details.
 5 | -->
 6 | <data-extraction-rules>
 7 |     <cloud-backup>
 8 |         <!-- TODO: Use <include> and <exclude> to control what is backed up.
 9 |         <include .../>
10 |         <exclude .../>
11 |         -->
12 |     </cloud-backup>
13 |     <!--
14 |     <device-transfer>
15 |         <include .../>
16 |         <exclude .../>
17 |     </device-transfer>
18 |     -->
19 | </data-extraction-rules>


--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
 1 | package com.yusufarisoy.composepagingapp
 2 | 
 3 | import org.junit.Test
 4 | 
 5 | import org.junit.Assert.*
 6 | 
 7 | /**
 8 |  * Example local unit test, which will execute on the development machine (host).
 9 |  *
10 |  * See [testing documentation](http://d.android.com/tools/testing).
11 |  */
12 | class ExampleUnitTest {
13 |     @Test
14 |     fun addition_isCorrect() {
15 |         assertEquals(4, 2 + 2)
16 |     }
17 | }


--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
 1 | buildscript {
 2 |     dependencies {
 3 |         classpath Libs.toolsGradlePlugin
 4 |         classpath Libs.kotlinGradlePlugin
 5 |         classpath Libs.hiltGradlePlugin
 6 |     }
 7 | }
 8 | // Top-level build file where you can add configuration options common to all sub-projects/modules.
 9 | plugins {
10 |     id 'com.android.application' version '7.3.1' apply false
11 |     id 'com.android.library' version '7.3.1' apply false
12 |     id 'org.jetbrains.kotlin.android' version '1.7.20' apply false
13 | }


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3 | }
4 | 
5 | repositories {
6 |     mavenCentral()
7 | }


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1 | implementation-classpath=/Users/yusufarisoy/AndroidStudioProjects/compose-paging/buildSrc/build/classes/java/main\:/Users/yusufarisoy/AndroidStudioProjects/compose-paging/buildSrc/build/classes/groovy/main\:/Users/yusufarisoy/AndroidStudioProjects/compose-paging/buildSrc/build/classes/kotlin/main\:/Users/yusufarisoy/AndroidStudioProjects/compose-paging/buildSrc/build/resources/main
2 | 


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1 | Manifest-Version: 1.0
2 | 
3 | 


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/buildSrc/src/main/java/Dependencies.kt:
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 1 | object Versions {
 2 |     const val hilt = "2.42"
 3 |     const val compose = "1.3.3"
 4 |     const val retrofit = "2.9.0"
 5 |     const val lifecycle = "2.4.1"
 6 |     const val coroutines = "1.5.2"
 7 | }
 8 | 
 9 | object Libs {
10 |     const val toolsGradlePlugin = "com.android.tools.build:gradle:7.1.1"
11 |     const val kotlinGradlePlugin = "org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.10"
12 |     const val hiltGradlePlugin = "com.google.dagger:hilt-android-gradle-plugin:${Versions.hilt}"
13 |     // Core
14 |     const val coreKtx = "androidx.core:core-ktx:1.9.0"
15 |     // AppCompat
16 |     const val appCompat = "androidx.appcompat:appcompat:1.6.0"
17 |     // Activity
18 |     const val activityCompose = "androidx.activity:activity-compose:1.4.0"
19 |     // Material
20 |     const val material = "com.google.android.material:material:1.5.0"
21 |     // Gson
22 |     const val gson = "com.google.code.gson:gson:2.8.7"
23 |     // Coil
24 |     const val coilCompose = "io.coil-kt:coil-compose:1.4.0"
25 |     // Lifecycle
26 |     const val lifecycleFragment = "androidx.fragment:fragment-ktx:1.4.1"
27 |     const val lifecycleRunTime = "androidx.lifecycle:lifecycle-runtime-ktx:2.5.0-alpha02"
28 |     const val lifecycleCommon = "androidx.lifecycle:lifecycle-common-java8:${Versions.lifecycle}"
29 |     const val lifecycleViewModel = "androidx.lifecycle:lifecycle-viewmodel-ktx:${Versions.lifecycle}"
30 |     // Coroutines
31 |     const val coroutinesCore = "org.jetbrains.kotlinx:kotlinx-coroutines-core:${Versions.coroutines}"
32 |     const val coroutinesAndroid = "org.jetbrains.kotlinx:kotlinx-coroutines-android:${Versions.coroutines}"
33 |     // Retrofit
34 |     const val retrofit = "com.squareup.retrofit2:retrofit:${Versions.retrofit}"
35 |     const val retrofitConverter = "com.squareup.retrofit2:converter-gson:${Versions.retrofit}"
36 |     // Hilt
37 |     const val hiltNavigationCompose = "androidx.hilt:hilt-navigation-compose:1.0.0"
38 |     const val hiltAndroid = "com.google.dagger:hilt-android:${Versions.hilt}"
39 |     const val hiltCompiler = "com.google.dagger:hilt-android-compiler:${Versions.hilt}"
40 |     // Compose
41 |     const val composeUi = "androidx.compose.ui:ui:${Versions.compose}"
42 |     const val composeCompiler = "androidx.compose.compiler:compiler:1.3.2"
43 |     const val composeUiTooling = "androidx.compose.ui:ui-tooling:${Versions.compose}"
44 |     const val composeUiTest = "androidx.compose.ui:ui-test-junit4:${Versions.compose}"
45 |     const val composeMaterial = "androidx.compose.material:material:1.3.1"
46 |     const val composeTooling = "androidx.compose.ui:ui-tooling-preview:${Versions.compose}"
47 |     // Test
48 |     const val testJunit = "junit:junit:4.+"
49 |     const val testExtJunit = "androidx.test.ext:junit:1.1.3"
50 |     const val espressoCore = "androidx.test.espresso:espresso-core:3.4.0"
51 | }


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/composepaging/.gitignore:
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1 | /build


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/composepaging/build.gradle:
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 1 | /*
 2 |  * Created by Yusuf Arisoy on Jan 23, 2023
 3 |  * Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
 4 |  * Last modified 1/8/24, 12:09 PM
 5 |  */
 6 | 
 7 | plugins {
 8 |     id 'com.android.library'
 9 |     id 'org.jetbrains.kotlin.android'
10 |     id 'maven-publish'
11 | }
12 | 
13 | android {
14 |     namespace 'com.yusufarisoy.composepaging'
15 |     compileSdk 33
16 | 
17 |     defaultConfig {
18 |         minSdk 21
19 |         targetSdk 33
20 | 
21 |         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
22 |         consumerProguardFiles "consumer-rules.pro"
23 |     }
24 | 
25 |     buildTypes {
26 |         release {
27 |             minifyEnabled false
28 |             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
29 |         }
30 |     }
31 |     compileOptions {
32 |         sourceCompatibility JavaVersion.VERSION_1_8
33 |         targetCompatibility JavaVersion.VERSION_1_8
34 |     }
35 |     kotlinOptions {
36 |         jvmTarget = '1.8'
37 |     }
38 |     buildFeatures {
39 |         compose = true
40 |     }
41 |     composeOptions {
42 |         kotlinCompilerExtensionVersion '1.3.2'
43 |         kotlinCompilerVersion '1.7.20'
44 |     }
45 | }
46 | 
47 | dependencies {
48 | 
49 |     implementation 'androidx.core:core-ktx:1.9.0'
50 |     implementation 'androidx.appcompat:appcompat:1.6.0'
51 |     implementation 'com.google.android.material:material:1.7.0'
52 |     // Compose
53 |     implementation 'androidx.compose.ui:ui:1.3.3'
54 |     implementation 'androidx.compose.compiler:compiler:1.3.2'
55 |     implementation 'androidx.compose.ui:ui-tooling:1.3.3'
56 |     implementation 'androidx.compose.material:material:1.3.1'
57 |     implementation 'androidx.compose.ui:ui-tooling-preview:1.3.3'
58 |     // Test
59 |     testImplementation 'junit:junit:4.13.2'
60 |     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
61 |     androidTestImplementation 'androidx.compose.ui:ui-test-junit4:1.3.3'
62 |     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
63 | }
64 | 
65 | afterEvaluate {
66 |     publishing {
67 |         publications {
68 |             release(MavenPublication) {
69 |                 from components.release
70 | 
71 |                 groupId = 'com.github.composepaging'
72 |                 artifactId = 'compose-paging'
73 |                 version = '1.0.1'
74 |             }
75 |         }
76 |     }
77 | }


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/composepaging/consumer-rules.pro:
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/composepaging/proguard-rules.pro:
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 1 | # Add project specific ProGuard rules here.
 2 | # You can control the set of applied configuration files using the
 3 | # proguardFiles setting in build.gradle.
 4 | #
 5 | # For more details, see
 6 | #   http://developer.android.com/guide/developing/tools/proguard.html
 7 | 
 8 | # If your project uses WebView with JS, uncomment the following
 9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | #   public *;
13 | #}
14 | 
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 | 
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile


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/composepaging/src/androidTest/java/com/yusufarisoy/composepaging/ExampleInstrumentedTest.kt:
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 1 | /*
 2 |  * Created by Yusuf Arisoy on Jan 23, 2023
 3 |  * Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
 4 |  * Last modified 1/8/24, 12:05 PM
 5 |  */
 6 | 
 7 | package com.yusufarisoy.composepaging
 8 | 
 9 | import androidx.test.platform.app.InstrumentationRegistry
10 | import androidx.test.ext.junit.runners.AndroidJUnit4
11 | 
12 | import org.junit.Test
13 | import org.junit.runner.RunWith
14 | 
15 | import org.junit.Assert.*
16 | 
17 | /**
18 |  * Instrumented test, which will execute on an Android device.
19 |  *
20 |  * See [testing documentation](http://d.android.com/tools/testing).
21 |  */
22 | @RunWith(AndroidJUnit4::class)
23 | class ExampleInstrumentedTest {
24 |     @Test
25 |     fun useAppContext() {
26 |         // Context of the app under test.
27 |         val appContext = InstrumentationRegistry.getInstrumentation().targetContext
28 |         assertEquals("com.yusufarisoy.composepaging.test", appContext.packageName)
29 |     }
30 | }


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/composepaging/src/main/AndroidManifest.xml:
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1 | <?xml version="1.0" encoding="utf-8"?>
2 | <!--
3 |   ~ Created by Yusuf Arisoy on Jan 23, 2023
4 |   ~ Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
5 |   ~ Last modified 1/8/24, 12:05 PM
6 |   -->
7 | 
8 | <manifest xmlns:android="http://schemas.android.com/apk/res/android"
9 |     package="com.yusufarisoy.composepaging"/>


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/composepaging/src/main/java/com/yusufarisoy/composepaging/BasePager.kt:
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 1 | /*
 2 |  * Created by Yusuf Arisoy on Jan 23, 2023
 3 |  * Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
 4 |  * Last modified 1/8/24, 12:09 PM
 5 |  */
 6 | 
 7 | package com.yusufarisoy.composepaging
 8 | 
 9 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource.LoadState
10 | import kotlinx.coroutines.channels.Channel
11 | import kotlinx.coroutines.flow.Flow
12 | import kotlinx.coroutines.flow.MutableStateFlow
13 | import kotlinx.coroutines.flow.asStateFlow
14 | import kotlinx.coroutines.flow.receiveAsFlow
15 | import kotlinx.coroutines.sync.Mutex
16 | import kotlinx.coroutines.sync.withLock
17 | 
18 | abstract class BasePager<Value : Any> {
19 | 
20 |     protected var reachedLast: Boolean = false
21 | 
22 |     private val stateMutex = Mutex()
23 |     private val _loadState: MutableStateFlow<LoadState> = MutableStateFlow(LoadState.Initial)
24 |     val loadState = _loadState.asStateFlow()
25 | 
26 |     private val dataMutex = Mutex()
27 |     private val _dataChannel: Channel<List<Value>> = Channel()
28 |     val dataFlow: Flow<List<Value>>
29 |         get() = _dataChannel.receiveAsFlow()
30 | 
31 |     protected suspend fun setState(reducer: LoadState.() -> LoadState) {
32 |         pushState {
33 |             val newState = reducer(_loadState.value)
34 |             _loadState.tryEmit(newState)
35 |         }
36 |     }
37 | 
38 |     private suspend fun pushState(action: () -> Unit) {
39 |         stateMutex.withLock {
40 |             action.invoke()
41 |         }
42 |     }
43 | 
44 |     protected suspend fun pushData(data: List<Value>) {
45 |         dataMutex.withLock {
46 |             _dataChannel.send(data)
47 |         }
48 |     }
49 | 
50 |     fun canLoadMore() = !reachedLast && _loadState.value == LoadState.Idle
51 | }
52 | 


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/composepaging/src/main/java/com/yusufarisoy/composepaging/ComposePager.kt:
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 1 | /*
 2 |  * Created by Yusuf Arisoy on Jan 23, 2023
 3 |  * Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
 4 |  * Last modified 1/8/24, 12:15 PM
 5 |  */
 6 | 
 7 | package com.yusufarisoy.composepaging
 8 | 
 9 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource
10 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource.LoadState
11 | 
12 | class ComposePager<Value : Any>(
13 |     private val pagingSource: ComposePagingSource<Value>,
14 |     private val initialPage: Int
15 | ) : BasePager<Value>() {
16 | 
17 |     private var page: Int = initialPage
18 | 
19 |     suspend fun loadFirstPage() {
20 |         loadPage()
21 |     }
22 | 
23 |     suspend fun loadNextPage() {
24 |         if (!canLoadMore()) return
25 | 
26 |         page++
27 |         setState {
28 |             LoadState.Loading
29 |         }
30 |         loadPage()
31 |     }
32 | 
33 |     private suspend fun loadPage() {
34 |         when (val result = pagingSource.load(params = ComposePagingSource.Params(page))) {
35 |             is ComposePagingSource.Result.Page -> {
36 |                 pushData(result.data)
37 |                 reachedLast = !result.hasNextPage
38 |                 setState {
39 |                     LoadState.Idle
40 |                 }
41 |             }
42 |             is ComposePagingSource.Result.Error ->
43 |                 setState {
44 |                     LoadState.Error(result.throwable)
45 |                 }
46 |         }
47 |     }
48 | 
49 |     suspend fun reset() {
50 |         page = initialPage
51 |         setState {
52 |             LoadState.Initial
53 |         }
54 |         loadFirstPage()
55 |     }
56 | 
57 |     fun currentPage() = page
58 | }
59 | 


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/composepaging/src/main/java/com/yusufarisoy/composepaging/ComposePagerWithQuery.kt:
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 1 | /*
 2 |  * Created by Yusuf Arisoy on Jan 23, 2023
 3 |  * Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
 4 |  * Last modified 1/8/24, 12:15 PM
 5 |  */
 6 | 
 7 | package com.yusufarisoy.composepaging
 8 | 
 9 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource.LoadState
10 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSource.Result
11 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSourceWithQuery
12 | import com.yusufarisoy.composepaging.pagingsource.ComposePagingSourceWithQuery.Params
13 | 
14 | class ComposePagerWithQuery<in Input : Params, Value : Any>(
15 |     private val pagingSource: ComposePagingSourceWithQuery<Input, Value>
16 | ) : BasePager<Value>() {
17 | 
18 |     suspend fun searchPage(params: Input) {
19 |         setState {
20 |             LoadState.Loading
21 |         }
22 |         loadPage(params)
23 |     }
24 | 
25 |     suspend fun loadNextPage(params: Input) {
26 |         if (!canLoadMore()) return
27 | 
28 |         setState {
29 |             LoadState.Loading
30 |         }
31 |         loadPage(params)
32 |     }
33 | 
34 |     private suspend fun loadPage(params: Input) {
35 |         when (val result = pagingSource.load(params)) {
36 |             is Result.Page -> {
37 |                 pushData(result.data)
38 |                 reachedLast = !result.hasNextPage
39 |                 setState {
40 |                     LoadState.Idle
41 |                 }
42 |             }
43 |             is Result.Error ->
44 |                 setState {
45 |                     LoadState.Error(result.throwable)
46 |                 }
47 |         }
48 |     }
49 | 
50 |     suspend fun reset(params: Input) {
51 |         setState {
52 |             LoadState.Initial
53 |         }
54 |         searchPage(params)
55 |     }
56 | }
57 | 


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/composepaging/src/main/java/com/yusufarisoy/composepaging/ComposePagingExt.kt:
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 1 | /*
 2 |  * Created by Yusuf Arisoy on Jan 23, 2023
 3 |  * Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
 4 |  * Last modified 1/8/24, 12:15 PM
 5 |  */
 6 | 
 7 | package com.yusufarisoy.composepaging
 8 | 
 9 | import androidx.compose.foundation.lazy.LazyItemScope
10 | import androidx.compose.foundation.lazy.LazyListScope
11 | import androidx.compose.runtime.Composable
12 | import androidx.compose.runtime.LaunchedEffect
13 | import androidx.compose.runtime.remember
14 | import com.yusufarisoy.composepaging.pagingdata.ComposePagingData
15 | 
16 | inline fun <Value : Any> LazyListScope.items(
17 |     feed: ComposePagingData<Value>,
18 |     noinline requestNextPage: () -> Unit,
19 |     noinline key: ((item: Value) -> Any)? = null,
20 |     crossinline content: @Composable LazyItemScope.(item: Value) -> Unit
21 | ) {
22 |     items(
23 |         count = feed.items.size,
24 |         key = if (key != null) { index -> key(feed.items[index]) } else null
25 |     ) { index ->
26 |         val fetchDistanceReached = remember(index, feed.items.size) {
27 |             index == feed.items.size - feed.prefetchDistance - 1
28 |         }
29 |         LaunchedEffect(fetchDistanceReached) {
30 |             if (fetchDistanceReached) requestNextPage()
31 |         }
32 |         content(feed.items[index])
33 |     }
34 | }
35 | 
36 | inline fun <Value : Any> LazyListScope.itemsIndexed(
37 |     feed: ComposePagingData<Value>,
38 |     noinline requestNextPage: () -> Unit,
39 |     noinline key: ((index: Int, item: Value) -> Any)? = null,
40 |     crossinline content: @Composable LazyItemScope.(index: Int, item: Value) -> Unit
41 | ) {
42 |     items(
43 |         count = feed.items.size,
44 |         key = if (key != null) { index -> key(index, feed.items[index]) } else null
45 |     ) { index ->
46 |         val fetchDistanceReached = remember(index, feed.items.size) {
47 |             index == feed.items.size - feed.prefetchDistance - 1
48 |         }
49 |         LaunchedEffect(fetchDistanceReached) {
50 |             if (fetchDistanceReached) requestNextPage()
51 |         }
52 |         content(index, feed.items[index])
53 |     }
54 | }
55 | 


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/composepaging/src/main/java/com/yusufarisoy/composepaging/pagingdata/ComposePagingData.kt:
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 1 | /*
 2 |  * Created by Yusuf Arisoy on Jan 23, 2023
 3 |  * Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
 4 |  * Last modified 1/8/24, 12:14 PM
 5 |  */
 6 | 
 7 | package com.yusufarisoy.composepaging.pagingdata
 8 | 
 9 | import androidx.compose.runtime.mutableStateListOf
10 | import androidx.compose.runtime.snapshots.SnapshotStateList
11 | 
12 | class ComposePagingData<Value>(val prefetchDistance: Int = PREFETCH_DISTANCE) {
13 | 
14 |     val items: SnapshotStateList<Value> = mutableStateListOf()
15 | 
16 |     fun addPage(data: List<Value>) {
17 |         items.addAll(data)
18 |     }
19 | 
20 |     fun clear() {
21 |         items.clear()
22 |     }
23 | 
24 |     companion object {
25 |         private const val PREFETCH_DISTANCE: Int = 0
26 |     }
27 | }
28 | 


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/composepaging/src/main/java/com/yusufarisoy/composepaging/pagingsource/ComposePagingSource.kt:
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 1 | /*
 2 |  * Created by Yusuf Arisoy on Jan 23, 2023
 3 |  * Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
 4 |  * Last modified 1/8/24, 12:15 PM
 5 |  */
 6 | 
 7 | package com.yusufarisoy.composepaging.pagingsource
 8 | 
 9 | abstract class ComposePagingSource<Value : Any> {
10 | 
11 |     data class Params(val page: Int)
12 | 
13 |     sealed class LoadState {
14 | 
15 |         object Initial : LoadState()
16 | 
17 |         object Loading : LoadState()
18 | 
19 |         object Idle : LoadState()
20 | 
21 |         data class Error(val throwable: Throwable) : LoadState()
22 |     }
23 | 
24 |     sealed class Result<Value : Any> {
25 | 
26 |         data class Error<Value : Any>(
27 |             val throwable: Throwable
28 |         ) : Result<Value>()
29 | 
30 |         data class Page<Value : Any>(
31 |             val data: List<Value>,
32 |             val hasNextPage: Boolean
33 |         ) : Result<Value>()
34 |     }
35 | 
36 |     abstract suspend fun load(params: Params): Result<Value>
37 | }
38 | 


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/composepaging/src/main/java/com/yusufarisoy/composepaging/pagingsource/ComposePagingSourceWithQuery.kt:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Created by Yusuf Arisoy on Jan 23, 2023
 3 |  * Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
 4 |  * Last modified 1/8/24, 12:15 PM
 5 |  */
 6 | 
 7 | package com.yusufarisoy.composepaging.pagingsource
 8 | 
 9 | abstract class ComposePagingSourceWithQuery<in Input : ComposePagingSourceWithQuery.Params, Value : Any> {
10 | 
11 |     abstract class Params(open val page: Int, open val query: String)
12 | 
13 |     abstract suspend fun load(params: Input): ComposePagingSource.Result<Value>
14 | }
15 | 


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/composepaging/src/test/java/com/yusufarisoy/composepaging/ExampleUnitTest.kt:
--------------------------------------------------------------------------------
 1 | /*
 2 |  * Created by Yusuf Arisoy on Jan 23, 2023
 3 |  * Copyright (C) 2023 Yusuf Arisoy. All rights reserved.
 4 |  * Last modified 1/8/24, 12:05 PM
 5 |  */
 6 | 
 7 | package com.yusufarisoy.composepaging
 8 | 
 9 | import org.junit.Test
10 | 
11 | import org.junit.Assert.*
12 | 
13 | /**
14 |  * Example local unit test, which will execute on the development machine (host).
15 |  *
16 |  * See [testing documentation](http://d.android.com/tools/testing).
17 |  */
18 | class ExampleUnitTest {
19 |     @Test
20 |     fun addition_isCorrect() {
21 |         assertEquals(4, 2 + 2)
22 |     }
23 | }


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/gradle.properties:
--------------------------------------------------------------------------------
 1 | # Project-wide Gradle settings.
 2 | # IDE (e.g. Android Studio) users:
 3 | # Gradle settings configured through the IDE *will override*
 4 | # any settings specified in this file.
 5 | # For more details on how to configure your build environment visit
 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html
 7 | # Specifies the JVM arguments used for the daemon process.
 8 | # The setting is particularly useful for tweaking memory settings.
 9 | org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
10 | # When configured, Gradle will run in incubating parallel mode.
11 | # This option should only be used with decoupled projects. More details, visit
12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
13 | # org.gradle.parallel=true
14 | # AndroidX package structure to make it clearer which packages are bundled with the
15 | # Android operating system, and which are packaged with your app's APK
16 | # https://developer.android.com/topic/libraries/support-library/androidx-rn
17 | android.useAndroidX=true
18 | # Kotlin code style for this project: "official" or "obsolete":
19 | kotlin.code.style=official
20 | # Enables namespacing of each library's R class so that its R class includes only the
21 | # resources declared in the library itself and none from the library's dependencies,
22 | # thereby reducing the size of the R class for that library
23 | android.nonTransitiveRClass=true


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/gradle/wrapper/gradle-wrapper.jar:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/yusufarisoy/compose-paging/b1e07775867087e9e4ad57ceb2ce2ed80dc76670/gradle/wrapper/gradle-wrapper.jar


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/gradle/wrapper/gradle-wrapper.properties:
--------------------------------------------------------------------------------
1 | #Mon Jan 16 11:25:24 TRT 2023
2 | distributionBase=GRADLE_USER_HOME
3 | distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip
4 | distributionPath=wrapper/dists
5 | zipStorePath=wrapper/dists
6 | zipStoreBase=GRADLE_USER_HOME
7 | 


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/gradlew:
--------------------------------------------------------------------------------
  1 | #!/usr/bin/env sh
  2 | 
  3 | #
  4 | # Copyright 2015 the original author or authors.
  5 | #
  6 | # Licensed under the Apache License, Version 2.0 (the "License");
  7 | # you may not use this file except in compliance with the License.
  8 | # You may obtain a copy of the License at
  9 | #
 10 | #      https://www.apache.org/licenses/LICENSE-2.0
 11 | #
 12 | # Unless required by applicable law or agreed to in writing, software
 13 | # distributed under the License is distributed on an "AS IS" BASIS,
 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15 | # See the License for the specific language governing permissions and
 16 | # limitations under the License.
 17 | #
 18 | 
 19 | ##############################################################################
 20 | ##
 21 | ##  Gradle start up script for UN*X
 22 | ##
 23 | ##############################################################################
 24 | 
 25 | # Attempt to set APP_HOME
 26 | # Resolve links: $0 may be a link
 27 | PRG="$0"
 28 | # Need this for relative symlinks.
 29 | while [ -h "$PRG" ] ; do
 30 |     ls=`ls -ld "$PRG"`
 31 |     link=`expr "$ls" : '.*-> \(.*\)$'`
 32 |     if expr "$link" : '/.*' > /dev/null; then
 33 |         PRG="$link"
 34 |     else
 35 |         PRG=`dirname "$PRG"`"/$link"
 36 |     fi
 37 | done
 38 | SAVED="`pwd`"
 39 | cd "`dirname \"$PRG\"`/" >/dev/null
 40 | APP_HOME="`pwd -P`"
 41 | cd "$SAVED" >/dev/null
 42 | 
 43 | APP_NAME="Gradle"
 44 | APP_BASE_NAME=`basename "$0"`
 45 | 
 46 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 47 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 48 | 
 49 | # Use the maximum available, or set MAX_FD != -1 to use that value.
 50 | MAX_FD="maximum"
 51 | 
 52 | warn () {
 53 |     echo "$*"
 54 | }
 55 | 
 56 | die () {
 57 |     echo
 58 |     echo "$*"
 59 |     echo
 60 |     exit 1
 61 | }
 62 | 
 63 | # OS specific support (must be 'true' or 'false').
 64 | cygwin=false
 65 | msys=false
 66 | darwin=false
 67 | nonstop=false
 68 | case "`uname`" in
 69 |   CYGWIN* )
 70 |     cygwin=true
 71 |     ;;
 72 |   Darwin* )
 73 |     darwin=true
 74 |     ;;
 75 |   MINGW* )
 76 |     msys=true
 77 |     ;;
 78 |   NONSTOP* )
 79 |     nonstop=true
 80 |     ;;
 81 | esac
 82 | 
 83 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 84 | 
 85 | 
 86 | # Determine the Java command to use to start the JVM.
 87 | if [ -n "$JAVA_HOME" ] ; then
 88 |     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
 89 |         # IBM's JDK on AIX uses strange locations for the executables
 90 |         JAVACMD="$JAVA_HOME/jre/sh/java"
 91 |     else
 92 |         JAVACMD="$JAVA_HOME/bin/java"
 93 |     fi
 94 |     if [ ! -x "$JAVACMD" ] ; then
 95 |         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
 96 | 
 97 | Please set the JAVA_HOME variable in your environment to match the
 98 | location of your Java installation."
 99 |     fi
100 | else
101 |     JAVACMD="java"
102 |     which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
103 | 
104 | Please set the JAVA_HOME variable in your environment to match the
105 | location of your Java installation."
106 | fi
107 | 
108 | # Increase the maximum file descriptors if we can.
109 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
110 |     MAX_FD_LIMIT=`ulimit -H -n`
111 |     if [ $? -eq 0 ] ; then
112 |         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
113 |             MAX_FD="$MAX_FD_LIMIT"
114 |         fi
115 |         ulimit -n $MAX_FD
116 |         if [ $? -ne 0 ] ; then
117 |             warn "Could not set maximum file descriptor limit: $MAX_FD"
118 |         fi
119 |     else
120 |         warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
121 |     fi
122 | fi
123 | 
124 | # For Darwin, add options to specify how the application appears in the dock
125 | if $darwin; then
126 |     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
127 | fi
128 | 
129 | # For Cygwin or MSYS, switch paths to Windows format before running java
130 | if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
131 |     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
132 |     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
133 | 
134 |     JAVACMD=`cygpath --unix "$JAVACMD"`
135 | 
136 |     # We build the pattern for arguments to be converted via cygpath
137 |     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
138 |     SEP=""
139 |     for dir in $ROOTDIRSRAW ; do
140 |         ROOTDIRS="$ROOTDIRS$SEP$dir"
141 |         SEP="|"
142 |     done
143 |     OURCYGPATTERN="(^($ROOTDIRS))"
144 |     # Add a user-defined pattern to the cygpath arguments
145 |     if [ "$GRADLE_CYGPATTERN" != "" ] ; then
146 |         OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
147 |     fi
148 |     # Now convert the arguments - kludge to limit ourselves to /bin/sh
149 |     i=0
150 |     for arg in "$@" ; do
151 |         CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
152 |         CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
153 | 
154 |         if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
155 |             eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
156 |         else
157 |             eval `echo args$i`="\"$arg\""
158 |         fi
159 |         i=`expr $i + 1`
160 |     done
161 |     case $i in
162 |         0) set -- ;;
163 |         1) set -- "$args0" ;;
164 |         2) set -- "$args0" "$args1" ;;
165 |         3) set -- "$args0" "$args1" "$args2" ;;
166 |         4) set -- "$args0" "$args1" "$args2" "$args3" ;;
167 |         5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
168 |         6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
169 |         7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
170 |         8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
171 |         9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
172 |     esac
173 | fi
174 | 
175 | # Escape application args
176 | save () {
177 |     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
178 |     echo " "
179 | }
180 | APP_ARGS=`save "$@"`
181 | 
182 | # Collect all arguments for the java command, following the shell quoting and substitution rules
183 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
184 | 
185 | exec "$JAVACMD" "$@"
186 | 


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/gradlew.bat:
--------------------------------------------------------------------------------
 1 | @rem
 2 | @rem Copyright 2015 the original author or authors.
 3 | @rem
 4 | @rem Licensed under the Apache License, Version 2.0 (the "License");
 5 | @rem you may not use this file except in compliance with the License.
 6 | @rem You may obtain a copy of the License at
 7 | @rem
 8 | @rem      https://www.apache.org/licenses/LICENSE-2.0
 9 | @rem
10 | @rem Unless required by applicable law or agreed to in writing, software
11 | @rem distributed under the License is distributed on an "AS IS" BASIS,
12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 | @rem See the License for the specific language governing permissions and
14 | @rem limitations under the License.
15 | @rem
16 | 
17 | @if "%DEBUG%" == "" @echo off
18 | @rem ##########################################################################
19 | @rem
20 | @rem  Gradle startup script for Windows
21 | @rem
22 | @rem ##########################################################################
23 | 
24 | @rem Set local scope for the variables with windows NT shell
25 | if "%OS%"=="Windows_NT" setlocal
26 | 
27 | set DIRNAME=%~dp0
28 | if "%DIRNAME%" == "" set DIRNAME=.
29 | set APP_BASE_NAME=%~n0
30 | set APP_HOME=%DIRNAME%
31 | 
32 | @rem Resolve any "." and ".." in APP_HOME to make it shorter.
33 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
34 | 
35 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
36 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
37 | 
38 | @rem Find java.exe
39 | if defined JAVA_HOME goto findJavaFromJavaHome
40 | 
41 | set JAVA_EXE=java.exe
42 | %JAVA_EXE% -version >NUL 2>&1
43 | if "%ERRORLEVEL%" == "0" goto execute
44 | 
45 | echo.
46 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
47 | echo.
48 | echo Please set the JAVA_HOME variable in your environment to match the
49 | echo location of your Java installation.
50 | 
51 | goto fail
52 | 
53 | :findJavaFromJavaHome
54 | set JAVA_HOME=%JAVA_HOME:"=%
55 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
56 | 
57 | if exist "%JAVA_EXE%" goto execute
58 | 
59 | echo.
60 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
61 | echo.
62 | echo Please set the JAVA_HOME variable in your environment to match the
63 | echo location of your Java installation.
64 | 
65 | goto fail
66 | 
67 | :execute
68 | @rem Setup the command line
69 | 
70 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
71 | 
72 | 
73 | @rem Execute Gradle
74 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
75 | 
76 | :end
77 | @rem End local scope for the variables with windows NT shell
78 | if "%ERRORLEVEL%"=="0" goto mainEnd
79 | 
80 | :fail
81 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
82 | rem the _cmd.exe /c_ return code!
83 | if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
84 | exit /b 1
85 | 
86 | :mainEnd
87 | if "%OS%"=="Windows_NT" endlocal
88 | 
89 | :omega
90 | 


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/settings.gradle:
--------------------------------------------------------------------------------
 1 | pluginManagement {
 2 |     repositories {
 3 |         gradlePluginPortal()
 4 |         google()
 5 |         mavenCentral()
 6 |         maven { url 'https://www.jitpack.io' }
 7 |     }
 8 | }
 9 | dependencyResolutionManagement {
10 |     repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
11 |     repositories {
12 |         google()
13 |         mavenCentral()
14 |         maven { url 'https://www.jitpack.io' }
15 |     }
16 | }
17 | rootProject.name = "ComposePagingApp"
18 | include ':app'
19 | include ':composepaging'
20 | 


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