├── .gitignore ├── src └── main │ ├── resources │ └── info │ │ └── gianlucacosta │ │ └── omnieditor │ │ ├── actionIcons │ │ ├── about.png │ │ ├── copy.png │ │ ├── cut.png │ │ ├── new.png │ │ ├── open.png │ │ ├── paste.png │ │ ├── redo.png │ │ ├── save.png │ │ ├── start.png │ │ ├── stop.png │ │ ├── undo.png │ │ ├── saveAs.png │ │ └── onlineReference.png │ │ └── MainWindow.fxml │ └── scala │ └── info │ └── gianlucacosta │ └── omnieditor │ ├── Style.scala │ ├── OmniEditor.scala │ ├── OutputThread.scala │ ├── OmniWorkspace.scala │ ├── AppStrategy.scala │ ├── StyledCodeEditor.scala │ └── MainWindowController.scala ├── settings.gradle ├── mainIcon.svg ├── README.md └── LICENSE /.gitignore: -------------------------------------------------------------------------------- 1 | /.gradle/ 2 | /.idea/ 3 | /build/ 4 | /*.iml 5 | 6 | /src/generated/ 7 | -------------------------------------------------------------------------------- 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https://raw.githubusercontent.com/giancosta86/OmniEditor/HEAD/src/main/resources/info/gianlucacosta/omnieditor/actionIcons/onlineReference.png -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | /*§ 2 | =========================================================================== 3 | OmniEditor 4 | =========================================================================== 5 | Copyright (C) 2015-2016 Gianluca Costa 6 | =========================================================================== 7 | Licensed under the Apache License, Version 2.0 (the "License"); 8 | you may not use this file except in compliance with the License. 9 | You may obtain a copy of the License at 10 | 11 | http://www.apache.org/licenses/LICENSE-2.0 12 | 13 | Unless required by applicable law or agreed to in writing, software 14 | distributed under the License is distributed on an "AS IS" BASIS, 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 | See the License for the specific language governing permissions and 17 | limitations under the License. 18 | =========================================================================== 19 | */ 20 | 21 | rootProject.name = 'OmniEditor' 22 | 23 | -------------------------------------------------------------------------------- /src/main/scala/info/gianlucacosta/omnieditor/Style.scala: -------------------------------------------------------------------------------- 1 | /*§ 2 | =========================================================================== 3 | OmniEditor 4 | =========================================================================== 5 | Copyright (C) 2015-2016 Gianluca Costa 6 | =========================================================================== 7 | Licensed under the Apache License, Version 2.0 (the "License"); 8 | you may not use this file except in compliance with the License. 9 | You may obtain a copy of the License at 10 | 11 | http://www.apache.org/licenses/LICENSE-2.0 12 | 13 | Unless required by applicable law or agreed to in writing, software 14 | distributed under the License is distributed on an "AS IS" BASIS, 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 | See the License for the specific language governing permissions and 17 | limitations under the License. 18 | =========================================================================== 19 | */ 20 | 21 | package info.gianlucacosta.omnieditor 22 | 23 | private case class Style(cssClass: String, pattern: String) -------------------------------------------------------------------------------- /src/main/scala/info/gianlucacosta/omnieditor/OmniEditor.scala: -------------------------------------------------------------------------------- 1 | /*§ 2 | =========================================================================== 3 | OmniEditor 4 | =========================================================================== 5 | Copyright (C) 2015-2016 Gianluca Costa 6 | =========================================================================== 7 | Licensed under the Apache License, Version 2.0 (the "License"); 8 | you may not use this file except in compliance with the License. 9 | You may obtain a copy of the License at 10 | 11 | http://www.apache.org/licenses/LICENSE-2.0 12 | 13 | Unless required by applicable law or agreed to in writing, software 14 | distributed under the License is distributed on an "AS IS" BASIS, 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 | See the License for the specific language governing permissions and 17 | limitations under the License. 18 | =========================================================================== 19 | */ 20 | 21 | package info.gianlucacosta.omnieditor 22 | 23 | import javafx.fxml.FXMLLoader 24 | import javafx.scene.Scene 25 | import javafx.scene.layout.BorderPane 26 | import javafx.stage.Stage 27 | 28 | import scalafx.application.Platform 29 | 30 | case class OmniEditor(appStrategy: AppStrategy) { 31 | def start(primaryStage: Stage) { 32 | val loader = new FXMLLoader(getClass.getResource("MainWindow.fxml")) 33 | 34 | val root = loader.load[BorderPane]() 35 | val mainWindowController = loader.getController[MainWindowController]() 36 | 37 | val scene = new Scene(root) 38 | 39 | val syntaxCssUrl = appStrategy.syntaxCss 40 | scene.getStylesheets.add(syntaxCssUrl.toExternalForm) 41 | 42 | mainWindowController.init(primaryStage, appStrategy) 43 | 44 | Platform.runLater { 45 | primaryStage.setScene(scene) 46 | primaryStage.show() 47 | } 48 | } 49 | } -------------------------------------------------------------------------------- /src/main/scala/info/gianlucacosta/omnieditor/OutputThread.scala: -------------------------------------------------------------------------------- 1 | /*§ 2 | =========================================================================== 3 | OmniEditor 4 | =========================================================================== 5 | Copyright (C) 2015-2016 Gianluca Costa 6 | =========================================================================== 7 | Licensed under the Apache License, Version 2.0 (the "License"); 8 | you may not use this file except in compliance with the License. 9 | You may obtain a copy of the License at 10 | 11 | http://www.apache.org/licenses/LICENSE-2.0 12 | 13 | Unless required by applicable law or agreed to in writing, software 14 | distributed under the License is distributed on an "AS IS" BASIS, 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 | See the License for the specific language governing permissions and 17 | limitations under the License. 18 | =========================================================================== 19 | */ 20 | 21 | package info.gianlucacosta.omnieditor 22 | 23 | import java.time.Duration 24 | 25 | import info.gianlucacosta.helios.concurrency.AtomicStringBuilder 26 | 27 | import scalafx.application.Platform 28 | 29 | private case class OutputThread( 30 | refreshRate: Duration, 31 | outputBuffer: AtomicStringBuilder, 32 | outputAction: String => Unit 33 | ) extends Thread { 34 | 35 | override def run(): Unit = { 36 | while (!Thread.interrupted) { 37 | { 38 | tryToOutput() 39 | try { 40 | Thread.sleep(refreshRate.toMillis) 41 | } 42 | catch { 43 | case e: InterruptedException => 44 | tryToOutput() 45 | return 46 | } 47 | } 48 | } 49 | } 50 | 51 | private def tryToOutput(): Unit = { 52 | val textToOutput = outputBuffer.extract() 53 | if (!textToOutput.isEmpty) { 54 | Platform.runLater { 55 | outputAction(textToOutput) 56 | } 57 | } 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /src/main/scala/info/gianlucacosta/omnieditor/OmniWorkspace.scala: -------------------------------------------------------------------------------- 1 | /*§ 2 | =========================================================================== 3 | OmniEditor 4 | =========================================================================== 5 | Copyright (C) 2015-2016 Gianluca Costa 6 | =========================================================================== 7 | Licensed under the Apache License, Version 2.0 (the "License"); 8 | you may not use this file except in compliance with the License. 9 | You may obtain a copy of the License at 10 | 11 | http://www.apache.org/licenses/LICENSE-2.0 12 | 13 | Unless required by applicable law or agreed to in writing, software 14 | distributed under the License is distributed on an "AS IS" BASIS, 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 | See the License for the specific language governing permissions and 17 | limitations under the License. 18 | =========================================================================== 19 | */ 20 | 21 | package info.gianlucacosta.omnieditor 22 | 23 | import java.io.File 24 | import java.nio.file.Files 25 | import javafx.stage.Stage 26 | 27 | import info.gianlucacosta.helios.fx.workspace.Workspace 28 | 29 | import scalafx.stage.FileChooser 30 | 31 | private class OmniWorkspace(stage: Stage, documentFileChooser: FileChooser, codeEditor: StyledCodeEditor) extends Workspace(stage, documentFileChooser) { 32 | override def doNew(): Boolean = { 33 | codeEditor.clear() 34 | 35 | codeEditor.getUndoManager.forgetHistory() 36 | codeEditor.requestFocus() 37 | 38 | true 39 | } 40 | 41 | 42 | override def doOpen(sourceFile: File): Boolean = { 43 | val fileContent = new String( 44 | Files.readAllBytes(sourceFile.toPath), 45 | "utf-8" 46 | ) 47 | 48 | codeEditor.setText(fileContent) 49 | 50 | codeEditor.getUndoManager.forgetHistory() 51 | codeEditor.requestFocus() 52 | 53 | true 54 | } 55 | 56 | 57 | override def doSave(targetFile: File): Boolean = { 58 | Files.write( 59 | targetFile.toPath, 60 | codeEditor.getText.getBytes("utf-8") 61 | ) 62 | 63 | true 64 | } 65 | } 66 | -------------------------------------------------------------------------------- /mainIcon.svg: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 98 | -------------------------------------------------------------------------------- /src/main/scala/info/gianlucacosta/omnieditor/AppStrategy.scala: -------------------------------------------------------------------------------- 1 | /*§ 2 | =========================================================================== 3 | OmniEditor 4 | =========================================================================== 5 | Copyright (C) 2015-2016 Gianluca Costa 6 | =========================================================================== 7 | Licensed under the Apache License, Version 2.0 (the "License"); 8 | you may not use this file except in compliance with the License. 9 | You may obtain a copy of the License at 10 | 11 | http://www.apache.org/licenses/LICENSE-2.0 12 | 13 | Unless required by applicable law or agreed to in writing, software 14 | distributed under the License is distributed on an "AS IS" BASIS, 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 | See the License for the specific language governing permissions and 17 | limitations under the License. 18 | =========================================================================== 19 | */ 20 | 21 | package info.gianlucacosta.omnieditor 22 | 23 | import java.io.File 24 | import java.net.URL 25 | 26 | import info.gianlucacosta.helios.concurrency.AtomicStringBuilder 27 | 28 | import scalafx.stage.FileChooser 29 | 30 | /** 31 | * Strategy employed to define customized IDE behaviour 32 | */ 33 | trait AppStrategy { 34 | /** 35 | * Application title, shown in windows and dialogs. 36 | * 37 | * @return The application title 38 | */ 39 | def title: String 40 | 41 | /** 42 | * Creates the file chooser employed when opening and saving source files. 43 | * 44 | * @return The file chooser 45 | */ 46 | def createSourceFileChooser(): FileChooser 47 | 48 | /** 49 | * Creates the code editor for source files. 50 | * 51 | * @return The code editor 52 | */ 53 | def createCodeEditor(): StyledCodeEditor 54 | 55 | /** 56 | * Computes the actual file after the user has confirmed a file when saving the source code. 57 | * For example, the function can add a default file extension if the user did not. 58 | * 59 | * @param sourceFileChooser The file chooser used to save the file 60 | * @param selectedFile The file originally saved by the user 61 | * @return The actual target file 62 | */ 63 | def getSavedSourceFile(sourceFileChooser: FileChooser, selectedFile: File): File 64 | 65 | /** 66 | * Tells the IDE whether to show the "Settings" menu item 67 | * 68 | * @return true if the "Settings" menu item should be shown 69 | */ 70 | def settingsSupported: Boolean 71 | 72 | /** 73 | * Shows a settings dialog. Can do nothing if settingsSupported() returns false 74 | */ 75 | def showSettings(): Unit 76 | 77 | /** 78 | * Runs the current program, probably by employing a dedicated compiler/interpreter. 79 | *
80 | * Please, design such executor in order to support thread interruption 81 | * (that is, by checking for Thread.interrupted()), as the user might want to 82 | * stop the program, which consists in calling Thread.interrupt() on the thread 83 | * executing this run() method. 84 | * 85 | * Throws InterruptedException: such exception can be thrown by the custom language's 86 | * virtual machine upon receiving a Thread.interrupt() 87 | * 88 | * @param programCode The source code in the editor 89 | * @param outputBuffer The buffer to write output to 90 | */ 91 | @throws[InterruptedException] 92 | def run(programCode: String, outputBuffer: AtomicStringBuilder) 93 | 94 | /** 95 | * Retrieves the URL of the CSS file employed to style the code editor 96 | * 97 | * @return The CSS url 98 | */ 99 | def syntaxCss: URL 100 | 101 | /** 102 | * Shows online reference (for example, opens a web page) 103 | */ 104 | def showOnlineReference(): Unit 105 | 106 | /** 107 | * Shows the "About..." window 108 | */ 109 | def showAboutWindow(): Unit 110 | } 111 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # OmniEditor 2 | 3 | *Ready-made ScalaFX IDE for custom languages* 4 | 5 | ## Introduction 6 | 7 | OmniEditor is a ScalaFX library providing a ready-made, user-friendly IDE for custom programming languages as well as an independent code editor with syntax highlighting. 8 | 9 | First of all, it supports the basic interactive activities provided by a document workspace: 10 | 11 | * New 12 | * Open 13 | * Save 14 | * Save as 15 | * Undo 16 | * Redo 17 | * Cut 18 | * Copy 19 | * Paste 20 | * Settings 21 | * Help 22 | * About 23 | 24 | In addition to this, OmniEditor enables *the execution of interpreters/compilers* on the code written in the text editor, allowing the user to cancel the process via the *Stop* button in the user interface (for example, in case of infinite loops). 25 | 26 | Finally, for Java/JavaFX development (without Scala), the 2.x series is still available on Hephaestus, its Gradle/Maven repository. 27 | 28 | 29 | ## Core classes 30 | 31 | ### OmniEditor 32 | 33 | The *OmniEditor* class provides a customizable IDE application packaged as a Scala class. 34 | 35 | To run it, just add a few lines to the *start* method of your JavaFX/ScalaFX application subclass: 36 | 37 | ```scala 38 | val omniEditor = new OmniEditor(appStrategy) 39 | omniEditor.start(primaryStage) 40 | ``` 41 | 42 | where *appStrategy* is an instance of a class implementing the *AppStrategy* interface defined by the library, and *primaryStage* is the parameter of the *start* method in your JavaFX/ScalaFX application. 43 | 44 | For further information, please refer to the Scaladoc documentation. 45 | 46 | 47 | ### StyledCodeEditor 48 | 49 | Stemming from the "JavaKeywords" example provided by [RichTextFX](https://github.com/TomasMikula/RichTextFX), this class is the core of OmniEditor and creates a code editor easily customizable via CSS. 50 | 51 | In particular: 52 | 53 | * you can define a chain of *regex patterns*, each describing which CSS class should be applied to its matching text 54 | 55 | * a shortcut method is defined to apply a CSS class to a set of tokens (especially keywords) 56 | 57 | * it supports *indented new lines*, to keep each new line aligned with the previous one whenever the user presses ENTER 58 | 59 | * it supports *dynamic tabs* - the insertion of a given number of space characters in lieu of \\t whenever the user presses TAB. 60 | 61 | 62 | Please, refer to its Scaladoc for more details. 63 | 64 | 65 | ## Requirements 66 | 67 | OmniEditor requires: 68 | 69 | * Java 8 Update 91 or later compatible 70 | 71 | * Scala 2.11.8 or later compatible 72 | 73 | 74 | ## Download 75 | 76 | For further information about downloading or referencing OmniEditor via Gradle or Maven, please visit [its page](https://bintray.com/giancosta86/Hephaestus/OmniEditor) on Hephaestus, its Gradle/Maven repository. 77 | 78 | 79 | ## OmniEditor in action 80 | 81 | The very first open source application employing OmniEditor is [Chronos IDE](https://github.com/giancosta86/Chronos-IDE), for the [Chronos programming language](https://github.com/giancosta86/Chronos). 82 | 83 | [](https://github.com/giancosta86/Chronos-IDE) 84 | 85 | ## Special thanks 86 | 87 | * OmniEditor is based on [RichTextFX](https://github.com/TomasMikula/RichTextFX), and was created starting from its brilliant "JavaKeywords" demo 88 | 89 | 90 | * OmniEditor also employs [Helios-fx](https://github.com/giancosta86/Helios-fx), an open source ScalaFX library of shared utilities 91 | 92 | * The UI icons are taken from the elegant [Kids Icons](http://www.iconarchive.com/show/kids-icons-icons-by-everaldo.1.html) set, by [Everaldo Coelho](http://www.everaldo.com/). 93 | 94 | 95 | 96 | ### RichTextFX - License information 97 | 98 | >Copyright (c) 2013-2014, Tomas Mikula 99 | >All rights reserved. 100 | > 101 | >Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 102 | > 103 | >1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 104 | > 105 | >2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 106 | > 107 | >THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 108 | -------------------------------------------------------------------------------- /src/main/scala/info/gianlucacosta/omnieditor/StyledCodeEditor.scala: -------------------------------------------------------------------------------- 1 | /*§ 2 | =========================================================================== 3 | OmniEditor 4 | =========================================================================== 5 | Copyright (C) 2015-2016 Gianluca Costa 6 | =========================================================================== 7 | Licensed under the Apache License, Version 2.0 (the "License"); 8 | you may not use this file except in compliance with the License. 9 | You may obtain a copy of the License at 10 | 11 | http://www.apache.org/licenses/LICENSE-2.0 12 | 13 | Unless required by applicable law or agreed to in writing, software 14 | distributed under the License is distributed on an "AS IS" BASIS, 15 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 | See the License for the specific language governing permissions and 17 | limitations under the License. 18 | =========================================================================== 19 | */ 20 | 21 | package info.gianlucacosta.omnieditor 22 | 23 | import java.time.Duration 24 | import java.util 25 | import java.util.concurrent.Semaphore 26 | import java.util.regex.Pattern 27 | import javafx.event.EventHandler 28 | import javafx.scene.input.{KeyCode, KeyEvent} 29 | 30 | import org.fxmisc.richtext.{CodeArea, LineNumberFactory, StyleSpans, StyleSpansBuilder} 31 | 32 | import scala.collection.JavaConversions._ 33 | import scalafx.application.Platform 34 | 35 | 36 | object StyledCodeEditor { 37 | private val LeadingSpacePattern = Pattern.compile(raw"^\s*") 38 | } 39 | 40 | /** 41 | * Code editor enabling easy pattern-based syntax highlighting. 42 | *
43 | * This class derives from and extends the JavaKeywords demo of the CodeArea control. 44 | */ 45 | class StyledCodeEditor(stylingSleepDuration: Duration = Duration.ofMillis(334)) extends CodeArea { 46 | private var syntaxPattern = Pattern.compile("") 47 | private var styles = Map[String, Style]() 48 | private var descriptorKeyCounter = 0 49 | 50 | private var tabReplacementString: Option[String] = None 51 | 52 | 53 | setParagraphGraphicFactory(LineNumberFactory.get(this)) 54 | 55 | 56 | new StyleDaemon(this, stylingSleepDuration) { 57 | start() 58 | } 59 | 60 | 61 | /** 62 | * Binds a pattern to a CSS class. 63 | *
64 | * Consequently, such class will style code portions matching the pattern.
65 | * Patterns are applied in registration (FIFO) order, stopping when a pattern matches.
66 | *
67 | * @param cssClass the CSS class used to style text matching the pattern
68 | * @param regexPattern a regular expression pattern used to match text in the editor
69 | */
70 | def addPattern(cssClass: String, regexPattern: String) {
71 | val key = "S" + descriptorKeyCounter
72 | descriptorKeyCounter += 1
73 |
74 | val style = Style(cssClass, regexPattern)
75 | styles += (key -> style)
76 |
77 | updateSyntaxPattern()
78 | }
79 |
80 |
81 | /**
82 | * Simplified version of addPattern(), focusing on tokens (for example, keywords)
83 | *
84 | * @param cssClass the CSS class used to style the tokens
85 | * @param tokens the tokens to style
86 | */
87 | def addTokens(cssClass: String, tokens: String*) {
88 | val tokensPattern =
89 | tokens
90 | .map(token => s"\\b${Pattern.quote(token)}\\b")
91 | .mkString("|")
92 |
93 | addPattern(cssClass, tokensPattern)
94 | }
95 |
96 |
97 | private def updateSyntaxPattern(): Unit = {
98 | val patternComponents = styles.map { case (key, style) =>
99 | s"(?<${key}>${style.pattern})"
100 | }
101 |
102 | val patternString =
103 | patternComponents.mkString("|")
104 |
105 | syntaxPattern = Pattern.compile(patternString)
106 | }
107 |
108 |
109 | def setText(text: String) {
110 | clear()
111 | replaceText(0, 0, text)
112 | }
113 |
114 | /**
115 | * When the user presses ENTER, initial space is added to the new line
116 | * to keep it aligned with the previous one.
117 | */
118 | def enableIndentedNewline() {
119 | addEventHandler(KeyEvent.KEY_PRESSED, new EventHandler[KeyEvent] {
120 | override def handle(keyEvent: KeyEvent): Unit = {
121 | keyEvent.getCode match {
122 | case KeyCode.ENTER =>
123 | val currentPosition = getCaretPosition
124 |
125 | val previousText = getText.substring(0, currentPosition)
126 | val previousNewlineCharPosition = previousText.lastIndexOf('\n')
127 |
128 | val currentLine = previousText.substring(previousNewlineCharPosition + 1)
129 |
130 | val leadingSpaceMatcher = StyledCodeEditor.LeadingSpacePattern.matcher(currentLine)
131 |
132 | if (leadingSpaceMatcher.find()) {
133 | val leadingSpace = leadingSpaceMatcher.group
134 |
135 | keyEvent.consume()
136 |
137 | val totalSpaceToInsert = "\n" + leadingSpace
138 | insertText(currentPosition, totalSpaceToInsert)
139 |
140 | moveTo(
141 | currentPosition + totalSpaceToInsert.length
142 | )
143 | }
144 |
145 | case _ =>
146 | }
147 | }
148 | })
149 | }
150 |
151 | /**
152 | * Pressing the "Tab" key will only add the "space" character, for the given number of times
153 | *
154 | * @param spaceCharacterCount The number of "space" characters to add in lieu of "\t"
155 | */
156 | def enableDynamicTabs(spaceCharacterCount: Int) {
157 | require(spaceCharacterCount >= 0)
158 |
159 | require(tabReplacementString.isEmpty)
160 |
161 | tabReplacementString = Some(" " * spaceCharacterCount)
162 |
163 | addEventHandler(KeyEvent.KEY_PRESSED, new EventHandler[KeyEvent] {
164 | override def handle(keyEvent: KeyEvent): Unit = {
165 | keyEvent.getCode match {
166 | case KeyCode.TAB =>
167 | keyEvent.consume()
168 |
169 | val currentPosition = getCaretPosition
170 |
171 | insertText(currentPosition, tabReplacementString.get)
172 |
173 | moveTo(
174 | currentPosition + spaceCharacterCount
175 | )
176 |
177 | case _ =>
178 | }
179 | }
180 | })
181 | }
182 |
183 |
184 | private var stylingEnabled: Boolean = true
185 |
186 |
187 | /**
188 | * Stops the background thread employed for styling the editor
189 | */
190 | def stopStyling(): Unit = {
191 | stylingEnabled = false
192 | }
193 |
194 |
195 | private class StyleDaemon(codeEditor: StyledCodeEditor, sleepDuration: Duration) extends Thread {
196 | setDaemon(true)
197 |
198 |
199 | override def run(): Unit = {
200 | var text = ""
201 | var latestStyledText = ""
202 |
203 | val guiSemaphore = new Semaphore(0)
204 |
205 |
206 | while (codeEditor.stylingEnabled) {
207 | Platform.runLater {
208 | text =
209 | codeEditor.getText()
210 |
211 | guiSemaphore.release()
212 | }
213 |
214 |
215 | guiSemaphore.acquire()
216 |
217 |
218 | if (text != latestStyledText) {
219 | val styleSpans =
220 | computeHighlighting(text)
221 |
222 | Platform.runLater {
223 | try {
224 | codeEditor.setStyleSpans(0, styleSpans)
225 | latestStyledText = text
226 | } catch {
227 | case _: Exception =>
228 | //Just do nothing
229 | }
230 |
231 | guiSemaphore.release()
232 | }
233 |
234 | guiSemaphore.acquire()
235 | }
236 |
237 |
238 | Thread.sleep(sleepDuration.toMillis)
239 | }
240 | }
241 |
242 |
243 | private def computeHighlighting(text: String): StyleSpans[util.Collection[String]] = {
244 | val spansBuilder = new StyleSpansBuilder[util.Collection[String]]
245 |
246 | val matcher = syntaxPattern.matcher(text)
247 | var latestMatchEndPosition = 0
248 |
249 | while (matcher.find()) {
250 | val styleKey =
251 | styles
252 | .keySet
253 | .filter(key => matcher.group(key) != null)
254 | .head
255 |
256 | val styleClass = styles(styleKey).cssClass
257 |
258 | spansBuilder.add(Seq(), matcher.start() - latestMatchEndPosition)
259 | spansBuilder.add(Seq(styleClass), matcher.end() - matcher.start())
260 | latestMatchEndPosition = matcher.end()
261 | }
262 | spansBuilder.add(Seq(), text.length() - latestMatchEndPosition)
263 | spansBuilder.create()
264 | }
265 | }
266 | }
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
1 | Apache License
2 | Version 2.0, January 2004
3 | http://www.apache.org/licenses/
4 |
5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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7 | 1. Definitions.
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