├── .vscode ├── settings.json └── launch.json ├── docs ├── screenshot.png └── architecture.png ├── tslint.json ├── webpack.config.js ├── .prettierrc.json ├── src ├── types.d.ts ├── Model │ ├── types.ts │ ├── deserializeGroups.ts │ ├── TsService.ts │ ├── TsComputedObservableGroup.ts │ ├── MutableObservableGroup.ts │ ├── ObservableGroups.ts │ └── Tracking.ts ├── ViewModels │ ├── PlaygroundViewModel.ts │ ├── ObservableGroupViewModel.ts │ ├── ObservableViewModel.ts │ ├── RecordingModel.ts │ └── SerializeController.ts ├── Components │ ├── MonacoEditor.tsx │ ├── PlaygroundView.tsx │ ├── utils.ts │ ├── RecordingMarker.tsx │ ├── formatValue.ts │ ├── GUI.tsx │ ├── TimeAxis.tsx │ ├── ObservableGroupView.tsx │ ├── DetailsPane.tsx │ ├── ObservableGroupsView.tsx │ └── ObservableView.tsx ├── index.tsx ├── std │ ├── lzmaCompressor.ts │ ├── utils.ts │ ├── SvgElements.tsx │ ├── Point.ts │ └── DragBehavior.ts ├── style.scss └── Model.ts ├── tsconfig.json ├── .gitignore ├── webpack.config.ts ├── package.json ├── README.md └── LICENSE /.vscode/settings.json: -------------------------------------------------------------------------------- 1 | { 2 | "tasksStatusbar.taskLabelFilter": "^dev$" 3 | } -------------------------------------------------------------------------------- /docs/screenshot.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hediet/rxjs-playground/HEAD/docs/screenshot.png -------------------------------------------------------------------------------- /docs/architecture.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/hediet/rxjs-playground/HEAD/docs/architecture.png -------------------------------------------------------------------------------- /tslint.json: -------------------------------------------------------------------------------- 1 | { 2 | "extends": "recommended", 3 | "rules": { 4 | "await-promise": true 5 | } 6 | } 7 | -------------------------------------------------------------------------------- /webpack.config.js: -------------------------------------------------------------------------------- 1 | require("ts-node").register(); 2 | module.exports = require("./webpack.config.ts"); 3 | -------------------------------------------------------------------------------- /.prettierrc.json: -------------------------------------------------------------------------------- 1 | { 2 | "trailingComma": "es5", 3 | "tabWidth": 4, 4 | "semi": true, 5 | "useTabs": true 6 | } 7 | -------------------------------------------------------------------------------- /src/types.d.ts: -------------------------------------------------------------------------------- 1 | declare module "lzma/src/lzma_worker" { 2 | const x: any; 3 | export = x; 4 | } 5 | 6 | declare module "base64-js" { 7 | const x: any; 8 | export = x; 9 | } 10 | -------------------------------------------------------------------------------- /tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "compilerOptions": { 3 | "target": "esnext", 4 | "module": "commonjs", 5 | "strict": true, 6 | "outDir": "dist", 7 | "skipLibCheck": true, 8 | "rootDir": "./src", 9 | "resolveJsonModule": true, 10 | "newLine": "LF", 11 | "sourceMap": true, 12 | "jsx": "react", 13 | "experimentalDecorators": true 14 | }, 15 | "include": ["src/**/*"] 16 | } 17 | -------------------------------------------------------------------------------- /.vscode/launch.json: -------------------------------------------------------------------------------- 1 | { 2 | // Use IntelliSense to learn about possible attributes. 3 | // Hover to view descriptions of existing attributes. 4 | // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387 5 | "version": "0.2.0", 6 | "configurations": [ 7 | { 8 | "type": "chrome", 9 | "request": "launch", 10 | "name": "Launch Chrome against localhost", 11 | "url": "http://localhost:8081", 12 | "webRoot": "${workspaceFolder}" 13 | } 14 | ] 15 | } 16 | -------------------------------------------------------------------------------- /src/Model/types.ts: -------------------------------------------------------------------------------- 1 | import { MonoTypeOperatorFunction, Observable, SchedulerLike } from "rxjs"; 2 | 3 | export type TrackFn = (name?: string) => MonoTypeOperatorFunction; 4 | export type Observables = {}> = { 5 | [TKey in keyof TObservables]: Observable 6 | } & { 7 | get(name: keyof TObservables): Observable; 8 | }; 9 | 10 | export type ObservableComputer< 11 | TObservables extends Record = {} 12 | > = ( 13 | observables: Observables, 14 | scheduler: SchedulerLike, 15 | track: TrackFn 16 | ) => Observable; 17 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Logs 2 | logs 3 | *.log 4 | npm-debug.log* 5 | 6 | # Runtime data 7 | pids 8 | *.pid 9 | *.seed 10 | *.pid.lock 11 | 12 | # Directory for instrumented libs generated by jscoverage/JSCover 13 | lib-cov 14 | 15 | # Coverage directory used by tools like istanbul 16 | coverage 17 | 18 | # nyc test coverage 19 | .nyc_output 20 | 21 | # Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files) 22 | .grunt 23 | 24 | # node-waf configuration 25 | .lock-wscript 26 | 27 | # Compiled binary addons (http://nodejs.org/api/addons.html) 28 | build/Release 29 | 30 | # Dependency directories 31 | node_modules 32 | jspm_packages 33 | 34 | # Optional npm cache directory 35 | .npm 36 | 37 | # Optional REPL history 38 | .node_repl_history 39 | 40 | api 41 | 42 | dist -------------------------------------------------------------------------------- /src/ViewModels/PlaygroundViewModel.ts: -------------------------------------------------------------------------------- 1 | import { observable } from "mobx"; 2 | 3 | import { ObservableGroup, ObservableGroups } from "../Model/ObservableGroups"; 4 | import { DragBehavior } from "../std/DragBehavior"; 5 | import { TsService } from "../Model/TsService"; 6 | import { RecordingModel } from "./RecordingModel"; 7 | import { ObservableGroupViewModel } from "./ObservableGroupViewModel"; 8 | 9 | export class PlaygroundViewModel { 10 | public readonly groups = new ObservableGroups(); 11 | 12 | public readonly groupDragBehavior = new DragBehavior< 13 | ObservableGroupViewModel 14 | >(); 15 | 16 | public readonly timedObjDragBehavior = new DragBehavior(); 17 | 18 | public readonly typeScriptService = new TsService(); 19 | 20 | @observable selectedGroup: ObservableGroup | undefined = undefined; 21 | 22 | public readonly recordingModel = new RecordingModel(); 23 | } 24 | -------------------------------------------------------------------------------- /src/Model/deserializeGroups.ts: -------------------------------------------------------------------------------- 1 | import { TsService } from "./TsService"; 2 | import { 3 | SerializedObservable, 4 | ObservableGroup, 5 | ObservableGroups, 6 | } from "./ObservableGroups"; 7 | import { TsComputedObservableGroup } from "./TsComputedObservableGroup"; 8 | import { MutableObservableGroup } from "./MutableObservableGroup"; 9 | import { runInAction } from "mobx"; 10 | 11 | export function deserializeGroups( 12 | groups: ObservableGroups, 13 | tsService: TsService, 14 | serialized: SerializedObservable[] 15 | ) { 16 | runInAction("Deserialize", () => { 17 | groups.clear(); 18 | for (const s of serialized) { 19 | let o: ObservableGroup; 20 | if (s.type === "comp") { 21 | o = new TsComputedObservableGroup(tsService, groups, s as any); 22 | } else { 23 | o = new MutableObservableGroup(s as any); 24 | } 25 | groups.addGroup(o); 26 | } 27 | }); 28 | } 29 | -------------------------------------------------------------------------------- /src/Components/MonacoEditor.tsx: -------------------------------------------------------------------------------- 1 | import { observer } from "mobx-react"; 2 | import React = require("react"); 3 | import * as monaco from "monaco-editor"; 4 | 5 | @observer 6 | export class MonacoEditor extends React.Component<{ 7 | model: monaco.editor.ITextModel; 8 | }> { 9 | private editor: monaco.editor.IStandaloneCodeEditor | undefined; 10 | 11 | componentWillUnmount() { 12 | if (this.editor) { 13 | this.editor.dispose(); 14 | } 15 | } 16 | 17 | private readonly setEditorDiv = (editorDiv: HTMLDivElement) => { 18 | if (!editorDiv) { 19 | return; 20 | } 21 | 22 | this.editor = monaco.editor.create(editorDiv, { 23 | model: this.props.model, 24 | automaticLayout: true, 25 | scrollBeyondLastLine: false, 26 | minimap: { enabled: false }, 27 | fixedOverflowWidgets: true, 28 | }); 29 | }; 30 | 31 | render() { 32 | return ( 33 |
34 |
35 |
36 | ); 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /src/Components/PlaygroundView.tsx: -------------------------------------------------------------------------------- 1 | import { observer } from "mobx-react"; 2 | import SplitPane from "react-split-pane"; 3 | import { DetailsPane } from "./DetailsPane"; 4 | import { ObservableGroupsView } from "./ObservableGroupsView"; 5 | import React = require("react"); 6 | import { PlaygroundViewModel } from "../ViewModels/PlaygroundViewModel"; 7 | 8 | @observer 9 | export class PlaygroundView extends React.Component< 10 | { playground: PlaygroundViewModel }, 11 | {} 12 | > { 13 | render() { 14 | const playground = this.props.playground; 15 | return ( 16 |
17 |
18 | 23 |
24 | 25 |
26 |
27 | 28 |
29 | 30 |
31 |
32 | ); 33 | } 34 | } 35 | -------------------------------------------------------------------------------- /src/index.tsx: -------------------------------------------------------------------------------- 1 | import * as React from "react"; 2 | import * as ReactDOM from "react-dom"; 3 | import "./style.scss"; 4 | import { Model } from "./Model"; 5 | import Components = require("./Components/GUI"); 6 | import { runInAction } from "mobx"; 7 | 8 | const model = runInAction("Create model", () => new Model()); 9 | 10 | function render(target: HTMLDivElement) { 11 | const c = require("./Components/GUI") as typeof Components; 12 | ReactDOM.render(, target); 13 | } 14 | 15 | const target = document.createElement("div"); 16 | target.className = "target"; 17 | document.body.appendChild(target); 18 | 19 | const destination = document.createElement("div"); 20 | destination.id = "destination"; 21 | document.body.appendChild(destination); 22 | 23 | render(target); 24 | 25 | declare var module: { 26 | hot?: { accept: (componentName: string, callback: () => void) => void }; 27 | }; 28 | declare var require: (name: string) => any; 29 | 30 | if (module.hot) { 31 | module.hot.accept("./Components/GUI", () => { 32 | render(target); 33 | }); 34 | } 35 | -------------------------------------------------------------------------------- /src/std/lzmaCompressor.ts: -------------------------------------------------------------------------------- 1 | import * as lzma from "lzma/src/lzma_worker"; 2 | import * as msgpack from "messagepack"; 3 | import * as base64 from "base64-js"; 4 | 5 | export function encodeData(json: unknown): string { 6 | // normalize undefined 7 | json = JSON.parse(JSON.stringify(json)); 8 | const data = msgpack.encode(json); 9 | const compressed = lzma.LZMA.compress(data, 9); 10 | const compressedStr = base64.fromByteArray(compressed); 11 | 12 | return compressedStr 13 | .replace(/\+/g, "-") // Convert '+' to '-' 14 | .replace(/\//g, "_") // Convert '/' to '_' 15 | .replace(/=+$/, ""); // Remove ending '=' 16 | } 17 | 18 | export function decodeData(compressedStr: string): unknown { 19 | compressedStr += Array(5 - (compressedStr.length % 4)).join("="); 20 | compressedStr = compressedStr 21 | .replace(/\-/g, "+") // Convert '-' to '+' 22 | .replace(/\_/g, "/"); // Convert '_' to '/' 23 | 24 | const compressed2 = base64.toByteArray(compressedStr); 25 | const decompressed = lzma.LZMA.decompress(compressed2); 26 | const origData = msgpack.decode(new Uint8Array(decompressed)); 27 | return origData; 28 | } 29 | 30 | // for tooling 31 | (window as any).compressor = { encodeData, decodeData }; 32 | -------------------------------------------------------------------------------- /src/Components/utils.ts: -------------------------------------------------------------------------------- 1 | import { Point } from "../std/Point"; 2 | import { PlaygroundViewModel } from "../ViewModels/PlaygroundViewModel"; 3 | import { PositionTransformation } from "../std/DragBehavior"; 4 | 5 | export interface SvgContext { 6 | mouseToSvgCoordinates(mousePos: Point): Point; 7 | } 8 | 9 | export interface TimeOffsetConversion { 10 | getOffset(time: number): number; 11 | getTime(offset: number): number; 12 | offsetPerTime: number; 13 | } 14 | 15 | export function handleMouseDownOnTimedObj( 16 | e: React.MouseEvent, 17 | data: unknown, 18 | setTime: (time: number) => void, 19 | playground: PlaygroundViewModel, 20 | svgContext: SvgContext, 21 | timeOffsetConversion: TimeOffsetConversion, 22 | end?: () => void 23 | ): void { 24 | e.preventDefault(); 25 | e.stopPropagation(); 26 | const op = playground.timedObjDragBehavior 27 | .start( 28 | data, 29 | new PositionTransformation(p => 30 | svgContext.mouseToSvgCoordinates(p) 31 | ).then(p => new Point(0, timeOffsetConversion.getTime(p.y))) 32 | ) 33 | .endOnMouseUp(); 34 | 35 | op.onDrag.sub(data => { 36 | setTime(data.position.y); 37 | }); 38 | 39 | op.onEnd.sub(data => { 40 | if (end) { 41 | end(); 42 | } 43 | }); 44 | } 45 | -------------------------------------------------------------------------------- /src/ViewModels/ObservableGroupViewModel.ts: -------------------------------------------------------------------------------- 1 | import { observable, computed, autorun, reaction } from "mobx"; 2 | import { ObservableGroup } from "../Model/ObservableGroups"; 3 | import { ObservableViewModel } from "./ObservableViewModel"; 4 | import { Disposable } from "@hediet/std/disposable"; 5 | 6 | export class ObservableGroupViewModel { 7 | @observable public dragX: number | undefined = undefined; 8 | @observable public observables: ObservableViewModel[] = []; 9 | 10 | @observable public titleWidth: number = 0; 11 | 12 | @computed get width(): number { 13 | return Math.max( 14 | this.widthSum(this.observables.length), 15 | this.titleWidth 16 | ); 17 | } 18 | 19 | public readonly dispose = Disposable.fn(); 20 | 21 | widthSum(count: number): number { 22 | return Math.max( 23 | 10, 24 | this.observables.slice(0, count).reduce((s, o) => s + o.width, 0) 25 | ); 26 | } 27 | 28 | constructor(public readonly group: ObservableGroup) { 29 | this.dispose.track({ 30 | dispose: reaction( 31 | () => group.observables.map(o => new ObservableViewModel(o)), 32 | observables => { 33 | this.observables = observables; 34 | }, 35 | { name: "Update observable view models", fireImmediately: true } 36 | ), 37 | }); 38 | } 39 | } 40 | -------------------------------------------------------------------------------- /webpack.config.ts: -------------------------------------------------------------------------------- 1 | import * as webpack from "webpack"; 2 | import path = require("path"); 3 | import HtmlWebpackPlugin = require("html-webpack-plugin"); 4 | import MonacoWebpackPlugin = require("monaco-editor-webpack-plugin"); 5 | import ForkTsCheckerWebpackPlugin = require("fork-ts-checker-webpack-plugin"); 6 | import { CleanWebpackPlugin } from "clean-webpack-plugin"; 7 | 8 | const r = (file: string) => path.resolve(__dirname, file); 9 | 10 | module.exports = { 11 | entry: [r("src/index.tsx")], 12 | output: { 13 | path: r("dist"), 14 | filename: "[name]-[hash].js", 15 | chunkFilename: "[name]-[hash].js", 16 | }, 17 | resolve: { 18 | extensions: [".webpack.js", ".web.js", ".ts", ".tsx", ".js"], 19 | }, 20 | devtool: "source-map", 21 | module: { 22 | rules: [ 23 | { test: /\.css$/, loader: "style-loader!css-loader" }, 24 | { test: /\.scss$/, loader: "style-loader!css-loader!sass-loader" }, 25 | { 26 | test: /\.(jpe?g|png|gif|eot|ttf|svg|woff|woff2|md)$/i, 27 | loader: "file-loader", 28 | }, 29 | { 30 | test: /\.tsx?$/, 31 | loader: "ts-loader", 32 | options: { transpileOnly: true }, 33 | }, 34 | ], 35 | }, 36 | plugins: [ 37 | new CleanWebpackPlugin(), 38 | new HtmlWebpackPlugin(), 39 | new MonacoWebpackPlugin({ 40 | languages: ["javascript", "json", "typescript"], 41 | }), 42 | new ForkTsCheckerWebpackPlugin(), 43 | ], 44 | } as webpack.Configuration; 45 | -------------------------------------------------------------------------------- /src/std/utils.ts: -------------------------------------------------------------------------------- 1 | /** 2 | * Finds the smallest `t` so that `test(t) && !test(t - 1)` 3 | * @param test A monotonous function, 4 | * i.e. `forall e >= 0: test(t) <= test(t + e)`. 5 | */ 6 | export function binarySearch(test: (t: number) => boolean): number { 7 | let range = [-1, 1]; 8 | while (test(range[0])) { 9 | // At this point, we know that `t < range[0]` 10 | range = [range[0] * 2, range[0]]; 11 | } 12 | // now we have `!test(range[0])` and `range[1] != 1 => test(range[1])` 13 | 14 | while (!test(range[1])) { 15 | // At this point, we know that `range[1] < t` 16 | range = [range[1], range[1] * 2]; 17 | } 18 | 19 | // now we have `!test(range[0]) && test(range[1])` 20 | 21 | // [t1, t2] 22 | while (true) { 23 | const mid = Math.floor((range[1] + range[0]) / 2); 24 | if (test(mid)) { 25 | if (mid == range[1]) { 26 | return mid; 27 | } 28 | range = [range[0], mid]; 29 | } else { 30 | if (mid == range[0]) { 31 | return mid + 1; 32 | } 33 | range = [mid, range[1]]; 34 | } 35 | } 36 | } 37 | 38 | export function sortByNumericKey( 39 | keySelector: (item: T) => number 40 | ): (a: T, b: T) => number { 41 | return (a, b) => { 42 | return keySelector(a) - keySelector(b); 43 | }; 44 | } 45 | 46 | export function seq(startInclusive: number, endInclusive: number): number[] { 47 | const result = new Array(); 48 | for (let i = startInclusive; i <= endInclusive; i++) { 49 | result.push(i); 50 | } 51 | return result; 52 | } 53 | -------------------------------------------------------------------------------- /src/Components/RecordingMarker.tsx: -------------------------------------------------------------------------------- 1 | import { MutableObservableGroup } from "../Model/MutableObservableGroup"; 2 | import { Point } from "../std/Point"; 3 | import { SvgLine } from "../std/SvgElements"; 4 | import { 5 | TimeOffsetConversion, 6 | handleMouseDownOnTimedObj, 7 | SvgContext, 8 | } from "./utils"; 9 | import { PlaygroundViewModel } from "../ViewModels/PlaygroundViewModel"; 10 | import React = require("react"); 11 | 12 | export class RecordingMarker extends React.Component<{ 13 | playground: PlaygroundViewModel; 14 | timeOffsetConversion: TimeOffsetConversion; 15 | svgContext: SvgContext; 16 | x: number; 17 | width: number; 18 | }> { 19 | render() { 20 | if ( 21 | !( 22 | this.props.playground.selectedGroup instanceof 23 | MutableObservableGroup 24 | ) 25 | ) { 26 | return <>; 27 | } 28 | 29 | const recordingModel = this.props.playground.recordingModel; 30 | 31 | const recordingY = this.props.timeOffsetConversion.getOffset( 32 | recordingModel.currentRecordTime || recordingModel.startTime 33 | ); 34 | 35 | return ( 36 | { 39 | handleMouseDownOnTimedObj( 40 | e, 41 | -1, 42 | t => (recordingModel.startTime = t), 43 | this.props.playground, 44 | this.props.svgContext, 45 | this.props.timeOffsetConversion 46 | ); 47 | }} 48 | > 49 | 55 | 56 | ); 57 | } 58 | } 59 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "my-website", 3 | "version": "0.0.1", 4 | "scripts": { 5 | "dev": "webpack-dev-server --hot", 6 | "build": "webpack", 7 | "pub": "gh-pages -d dist" 8 | }, 9 | "dependencies": { 10 | "@blueprintjs/core": "^3.17.1", 11 | "@blueprintjs/select": "^3.10.0", 12 | "@hediet/std": "^0.6.0", 13 | "@knuddels/mobx-logger": "^1.1.0", 14 | "@types/html-webpack-plugin": "^3.2.0", 15 | "@types/popper.js": "^1.11.0", 16 | "@types/webpack": "^4.4.33", 17 | "base64-js": "^1.3.1", 18 | "blueprintjs": "^0.0.8", 19 | "classnames": "^2.2.6", 20 | "json-to-ts": "^1.6.0", 21 | "lzma": "^2.3.2", 22 | "messagepack": "^1.1.10", 23 | "mobx": "^5.10.1", 24 | "mobx-react": "^6.1.1", 25 | "monaco-editor": "^0.17.1", 26 | "popper.js": "^1.15.0", 27 | "react": "^16.8.6", 28 | "react-dom": "^16.8.6", 29 | "react-popper": "^1.3.3", 30 | "react-split-pane": "^0.1.87", 31 | "rxjs": "^6.5.2", 32 | "urlsafe-base64": "^1.0.0" 33 | }, 34 | "devDependencies": { 35 | "@types/classnames": "^2.2.8", 36 | "@types/react": "^16.8.21", 37 | "@types/react-dom": "^16.8.4", 38 | "clean-webpack-plugin": "^3.0.0", 39 | "css-loader": "^3.0.0", 40 | "file-loader": "^4.0.0", 41 | "fork-ts-checker-webpack-plugin": "^1.4.2", 42 | "gh-pages": "^2.1.1", 43 | "html-webpack-plugin": "^3.2.0", 44 | "monaco-editor-webpack-plugin": "^1.7.0", 45 | "node-sass": "^4.12.0", 46 | "raw-loader": "^3.0.0", 47 | "sass": "^1.20.1", 48 | "sass-loader": "^7.1.0", 49 | "style-loader": "^0.23.1", 50 | "ts-loader": "^6.0.3", 51 | "ts-node": "^8.3.0", 52 | "typescript": "^3.5.2", 53 | "webpack": "^4.35.0", 54 | "webpack-cli": "^3.3.4", 55 | "webpack-dev-server": "^3.7.2" 56 | } 57 | } 58 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # A TypeScript Playground for RX JS 2 | 3 | This is a playground for 4 | [RxJS](https://rxjs-dev.firebaseapp.com/), a 5 | library for reactive programming using Observables that 6 | make it easier to compose asynchronous or callback-based 7 | code. The playground supports editable as well as 8 | computed observables. Events of editable observables can 9 | be created with a single click and dragged around, while 10 | computed observables are expressed in type-checked 11 | JavaScript (also known as TypeScript) and can refer to 12 | other observables. 13 | 14 | ![](./docs/screenshot.png) 15 | 16 | Core of this playground is the RxJs 17 | `VirtualTimeScheduler` 18 | that is used to immediately process delayed observables. 19 | The [Monaco Editor](https://microsoft.github.io/monaco-editor/) is used as editor component. The control UI is 20 | implemented with [BlueprintJs](https://blueprintjs.com/), the 21 | visualization is rendered as plain SVG. 22 | 23 | For technical reasons, delayed Rx operations must be 24 | given the scheduler passed to the `visualize` function. 25 | The `track` function can be used to track piped (intermediate) observables. 26 | The browser url reflects the current playground model 27 | and can be used for sharing. 28 | 29 | ## Dev-Setup 30 | 31 | Clone the project and run yarn: 32 | 33 | ``` 34 | git clone https://github.com/hediet/rxjs-playground.git 35 | cd rxjs-playground 36 | yarn 37 | ``` 38 | 39 | ### Dev-Server 40 | 41 | To start the dev server, run: 42 | 43 | ``` 44 | yarn dev 45 | ``` 46 | 47 | and open `http://localhost:8080`. 48 | 49 | ### Architecture 50 | 51 | This is a rough overview of the architecture of this app: 52 | ![](./docs/architecture.png) 53 | 54 | ### Todos 55 | 56 | - Improve performance 57 | - Improve usability 58 | -------------------------------------------------------------------------------- /src/Components/formatValue.ts: -------------------------------------------------------------------------------- 1 | export function formatValue(value: unknown, availableLen: number): string { 2 | switch (typeof value) { 3 | case "number": 4 | return "" + value; 5 | case "string": 6 | if (value.length + 2 <= availableLen) { 7 | return `"${value}"`; 8 | } 9 | return `"${value.substr(0, availableLen - 7)}"+...`; 10 | 11 | case "boolean": 12 | return value ? "true" : "false"; 13 | case "undefined": 14 | return "undefined"; 15 | case "object": 16 | if (value === null) { 17 | return "null"; 18 | } 19 | if (Array.isArray(value)) { 20 | return formatArray(value, availableLen); 21 | } else { 22 | return formatObject(value, availableLen); 23 | } 24 | case "symbol": 25 | return value.toString(); 26 | case "function": 27 | return `[[Function${value.name ? " " + value.name : ""}]]`; 28 | default: 29 | return "" + value; 30 | } 31 | } 32 | 33 | function formatObject(value: object, availableLen: number): string { 34 | let result = "{ "; 35 | let first = true; 36 | for (const [key, val] of Object.entries(value)) { 37 | if (!first) { 38 | result += ", "; 39 | } 40 | if (result.length - 5 > availableLen) { 41 | result += "..."; 42 | break; 43 | } 44 | first = false; 45 | result += `${key}: ${formatValue(val, availableLen - result.length)}`; 46 | } 47 | result += " }"; 48 | return result; 49 | } 50 | 51 | function formatArray(value: any[], availableLen: number): string { 52 | let result = "[ "; 53 | let first = true; 54 | for (const val of value) { 55 | if (!first) { 56 | result += ", "; 57 | } 58 | if (result.length - 5 > availableLen) { 59 | result += "..."; 60 | break; 61 | } 62 | first = false; 63 | result += `${formatValue(val, availableLen - result.length)}`; 64 | } 65 | result += " ]"; 66 | return result; 67 | } 68 | -------------------------------------------------------------------------------- /src/Components/GUI.tsx: -------------------------------------------------------------------------------- 1 | import { observer } from "mobx-react"; 2 | import * as React from "react"; 3 | import { Model, Demo } from "../Model"; 4 | import { PlaygroundView } from "./PlaygroundView"; 5 | import { Button, MenuItem } from "@blueprintjs/core"; 6 | import { runInAction } from "mobx"; 7 | import { Select, ItemRenderer } from "@blueprintjs/select"; 8 | 9 | @observer 10 | export class GUI extends React.Component<{ model: Model }, {}> { 11 | render() { 12 | const DemoSelect = Select.ofType(); 13 | 14 | const renderDemo: ItemRenderer = ( 15 | demo, 16 | { handleClick, modifiers } 17 | ) => { 18 | if (!modifiers.matchesPredicate) { 19 | return null; 20 | } 21 | return ( 22 | 29 | ); 30 | }; 31 | 32 | const model = this.props.model; 33 | return ( 34 |
35 | 38 | item.name.toLowerCase().indexOf(query.toLowerCase()) !== 39 | -1 40 | } 41 | activeItem={model.selectedDemo} 42 | itemRenderer={renderDemo} 43 | noResults={} 44 | onItemSelect={item => 45 | runInAction(() => { 46 | model.setDemo(item); 47 | }) 48 | } 49 | > 50 |
110 | 111 | {selectedGroup && ( 112 |
113 | 117 |
118 | )} 119 |
120 | ); 121 | } 122 | } 123 | @observer 124 | export class ConfigComponent extends React.Component<{ 125 | playground: PlaygroundViewModel; 126 | selectedGroup: ObservableGroup; 127 | }> { 128 | render() { 129 | const group = this.props.selectedGroup; 130 | return ( 131 |
132 | {group instanceof TsComputedObservableGroup && ( 133 |
134 | 138 |
139 | )} 140 | {group instanceof MutableObservableGroup && ( 141 | 145 | )} 146 |
147 | ); 148 | } 149 | } 150 | 151 | @observer 152 | class MutableOptionsComponent extends React.Component<{ 153 | playground: PlaygroundViewModel; 154 | group: MutableObservableGroup; 155 | }> { 156 | @action.bound 157 | private emitKey(e: React.KeyboardEvent): void { 158 | const r = this.props.playground.recordingModel; 159 | if (e.key === " ") { 160 | // space triggers the button itself 161 | return; 162 | } 163 | 164 | r.emitIfRecording(this.props.group, { value: e.key }); 165 | } 166 | 167 | render() { 168 | const group = this.props.group; 169 | const playground = this.props.playground; 170 | const recordingModel = playground.recordingModel; 171 | return ( 172 | <> 173 |
174 |
175 | 176 |
246 |
247 | 251 |
252 |
253 |
254 | 255 |
256 | 257 | ); 258 | } 259 | } 260 | -------------------------------------------------------------------------------- /src/Components/ObservableGroupsView.tsx: -------------------------------------------------------------------------------- 1 | import { autorun, observable, reaction, runInAction, computed } from "mobx"; 2 | import { disposeOnUnmount, observer } from "mobx-react"; 3 | import { Subject } from "rxjs"; 4 | import { debounceTime } from "rxjs/operators"; 5 | import { Point, Rectangle } from "../std/Point"; 6 | import { sortByNumericKey } from "../std/utils"; 7 | import { ObservableGroupView } from "./ObservableGroupView"; 8 | import { TimeAxis } from "./TimeAxis"; 9 | import { SvgContext, TimeOffsetConversion } from "./utils"; 10 | import { PlaygroundViewModel } from "../ViewModels/PlaygroundViewModel"; 11 | import { ObservableGroupViewModel } from "../ViewModels/ObservableGroupViewModel"; 12 | import React = require("react"); 13 | import classNames = require("classnames"); 14 | import { RecordingMarker } from "./RecordingMarker"; 15 | 16 | @observer 17 | export class ObservableGroupsView extends React.Component<{ 18 | playground: PlaygroundViewModel; 19 | }> { 20 | @observable private groups: ObservableGroupViewModel[] = []; 21 | 22 | @disposeOnUnmount 23 | private readonly _updateGroupViewModelsReaction = reaction( 24 | () => [...this.props.playground.groups.groups], 25 | groups => { 26 | const oldGroups = this.groups; 27 | this.groups = groups.map( 28 | g => 29 | this.groups.find(w => w.group === g) || 30 | new ObservableGroupViewModel(g) 31 | ); 32 | for (const g of oldGroups) { 33 | if (!this.groups.find(g_ => g_ === g)) { 34 | g.dispose(); 35 | } 36 | } 37 | }, 38 | { fireImmediately: true, name: "updateGroupViewModelsReaction" } 39 | ); 40 | 41 | public componentWillUnmount() { 42 | for (const g of this.groups) { 43 | g.dispose(); 44 | } 45 | } 46 | 47 | @disposeOnUnmount 48 | private readonly _setGroupOrderAfterDragging = autorun( 49 | () => { 50 | if (this.props.playground.groupDragBehavior.activeOperation) { 51 | this.props.playground.groupDragBehavior.activeOperation.onEnd.sub( 52 | () => { 53 | runInAction("Set group order after dragging", () => { 54 | if (this.lastGroupOrderWhileDragging) { 55 | this.lastGroupOrderWhileDragging.forEach( 56 | (val, idx) => (val.group.position = idx) 57 | ); 58 | } 59 | }); 60 | } 61 | ); 62 | } 63 | }, 64 | { name: "_setGroupOrderAfterDragging" } 65 | ); 66 | 67 | private lastGroupOrderWhileDragging: 68 | | ObservableGroupViewModel[] 69 | | undefined = undefined; 70 | 71 | private svgContext: SvgContext = { mouseToSvgCoordinates: undefined! }; 72 | private svgElement: SVGSVGElement | null = null; 73 | private setSvg(svg: SVGSVGElement | null) { 74 | this.svgElement = svg; 75 | if (!svg) { 76 | this.svgContext.mouseToSvgCoordinates = undefined!; 77 | } else { 78 | const pt = svg.createSVGPoint(); 79 | this.svgContext.mouseToSvgCoordinates = (point: Point) => { 80 | pt.x = point.x; 81 | pt.y = point.y; 82 | var r = pt.matrixTransform(svg.getScreenCTM()!.inverse()); 83 | return new Point(r.x, r.y); 84 | }; 85 | } 86 | } 87 | 88 | layoutGroups(): { 89 | group: ObservableGroupViewModel; 90 | x: number; 91 | }[] { 92 | const repairX = ( 93 | arr: { 94 | group: ObservableGroupViewModel; 95 | x: number; 96 | }[] 97 | ) => { 98 | let x = 100; 99 | for (const r of arr) { 100 | r.x = x; 101 | x += r.group.width + 20; 102 | } 103 | }; 104 | 105 | const result = this.groups 106 | .filter( 107 | g => !this.props.playground.groupDragBehavior.isDataEqualTo(g) 108 | ) 109 | .map((group, idx) => ({ group, x: 0, idx })); 110 | 111 | result.sort( 112 | sortByNumericKey(r => r.group.group.getPositionSortKey(r.idx)) 113 | ); 114 | 115 | repairX(result); 116 | 117 | const op = this.props.playground.groupDragBehavior.activeOperation; 118 | if (op) { 119 | result.push({ 120 | group: op.data, 121 | x: 0, 122 | idx: -1, 123 | }); 124 | 125 | result.sort( 126 | sortByNumericKey(r => 127 | r.group.dragX !== undefined 128 | ? r.group.dragX 129 | : r.x + r.group.width / 2 130 | ) 131 | ); 132 | 133 | this.lastGroupOrderWhileDragging = result.map(g => g.group); 134 | 135 | repairX(result); 136 | } 137 | 138 | result.sort( 139 | sortByNumericKey(g => 140 | this.props.playground.groupDragBehavior 141 | .activeOrPreviousOperation && 142 | this.props.playground.groupDragBehavior 143 | .activeOrPreviousOperation.data === g.group 144 | ? 100 145 | : g.group.group.id 146 | ) 147 | ); 148 | return result; 149 | } 150 | 151 | private getTimeOffsetConversion(): TimeOffsetConversion { 152 | const groups = this.props.playground.groups; 153 | 154 | const timeScaleFactor = Math.max( 155 | 0.01, 156 | Math.min(30, 20 / groups.minTimeDistanceBetweenItems) 157 | ); 158 | return { 159 | getOffset(time): number { 160 | return time * timeScaleFactor + 30; 161 | }, 162 | getTime(y): number { 163 | return (y - 30) / timeScaleFactor; 164 | }, 165 | offsetPerTime: timeScaleFactor, 166 | }; 167 | } 168 | 169 | private debounceSubject = new Subject(); 170 | @observable.ref 171 | private timeOffsetConversion = this.getTimeOffsetConversion(); 172 | 173 | private _disposable = this.debounceSubject 174 | .pipe(debounceTime(1000)) 175 | .forEach(() => { 176 | runInAction("Update scaling (debounced)", () => { 177 | this.timeOffsetConversion = this.getTimeOffsetConversion(); 178 | }); 179 | }); 180 | 181 | @disposeOnUnmount 182 | r = autorun( 183 | () => { 184 | this.getTimeOffsetConversion(); // trigger dependencies 185 | this.debounceSubject.next(); 186 | }, 187 | { name: "Update scaling" } 188 | ); 189 | 190 | private div: HTMLDivElement | undefined = undefined; 191 | @observable private minSvgHeight: number = 0; 192 | 193 | private x = setInterval(() => { 194 | if (this.div) { 195 | const div = this.div; 196 | if (this.minSvgHeight !== div.clientHeight - 1) { 197 | runInAction("Update svg height", () => { 198 | this.minSvgHeight = div.clientHeight - 1; 199 | }); 200 | } 201 | } 202 | }, 200); 203 | 204 | private readonly setHistoryVisualizerDiv = (div: HTMLDivElement) => { 205 | this.div = div; 206 | if (div) { 207 | div.addEventListener("scroll", () => { 208 | runInAction("Update scroll", () => { 209 | this.scroll++; 210 | }); 211 | }); 212 | } 213 | }; 214 | 215 | @observable private scroll = 0; 216 | 217 | @computed get width(): number { 218 | return ( 219 | this.groups.reduce((v, g) => v + g.width, 0) + 220 | Math.max(0, this.groups.length - 1) * 20 221 | ); 222 | } 223 | 224 | render() { 225 | this.scroll; 226 | const groups = this.props.playground.groups; 227 | 228 | const recordingModel = this.props.playground.recordingModel; 229 | 230 | const lastTime = Math.max( 231 | 1, 232 | groups.lastTime, 233 | recordingModel.currentRecordTimeOrStart 234 | ); 235 | const height = Math.max( 236 | this.minSvgHeight, 237 | this.timeOffsetConversion.getOffset(lastTime) + 30 238 | ); 239 | 240 | const svgRect = this.svgElement 241 | ? this.svgElement.getBoundingClientRect() 242 | : { left: 0, top: 0, width: 0, height: 0 }; 243 | const divRect = this.div 244 | ? this.div.getBoundingClientRect() 245 | : { left: 0, top: 0, width: 0, height: 0 }; 246 | 247 | const visibleTopLeft = new Point( 248 | divRect.left - svgRect.left, 249 | divRect.top - svgRect.top 250 | ); 251 | 252 | const visibleRectangle = new Rectangle( 253 | visibleTopLeft, 254 | visibleTopLeft.add({ x: divRect.width, y: divRect.height }) 255 | ); 256 | 257 | if (this.div && recordingModel.isRecording) { 258 | const recordMarkerY = this.timeOffsetConversion.getOffset( 259 | recordingModel.getRecordTime(new Date())! 260 | ); 261 | if ( 262 | recordMarkerY + 100 > visibleRectangle.bottomLeft.y || 263 | recordMarkerY < visibleRectangle.topLeft.y 264 | ) { 265 | this.div.scrollTo( 266 | 0, 267 | recordMarkerY - visibleRectangle.size.y + 100 268 | ); 269 | } 270 | } 271 | 272 | const renderRectangle = new Rectangle( 273 | visibleRectangle.topLeft.sub({ y: 300 }), 274 | visibleRectangle.bottomRight.add({ y: 300 }) 275 | ); 276 | 277 | const playground = this.props.playground; 278 | 279 | const layout = this.layoutGroups(); 280 | return ( 281 |
285 | this.setSvg(svg)} 287 | height={height} 288 | style={{ 289 | minWidth: this.width + 40 + 100 - 20, 290 | }} 291 | className={classNames( 292 | playground.timedObjDragBehavior.isActive && 293 | "draggingEvent" 294 | )} 295 | onMouseDown={() => { 296 | playground.selectedGroup = undefined; 297 | }} 298 | > 299 | 305 | 306 | {layout.map(({ group, x }) => ( 307 | 316 | ))} 317 | 318 | 325 | 326 |
327 | ); 328 | } 329 | } 330 | -------------------------------------------------------------------------------- /src/Components/ObservableView.tsx: -------------------------------------------------------------------------------- 1 | import { observer } from "mobx-react"; 2 | import { Point, point, Rectangle } from "../std/Point"; 3 | import { SvgText, SvgLine, SvgCircle, SvgRect } from "../std/SvgElements"; 4 | import { 5 | SvgContext, 6 | TimeOffsetConversion, 7 | handleMouseDownOnTimedObj, 8 | } from "./utils"; 9 | import React = require("react"); 10 | import { PlaygroundViewModel } from "../ViewModels/PlaygroundViewModel"; 11 | import { 12 | ObservableViewModel, 13 | ChildObservableViewModel, 14 | } from "../ViewModels/ObservableViewModel"; 15 | import { Menu, MenuItem, ContextMenu } from "@blueprintjs/core"; 16 | import classNames = require("classnames"); 17 | import { 18 | MutableObservableHistory, 19 | MutableObservableEvent, 20 | } from "../Model/MutableObservableGroup"; 21 | import { ObservableEvent } from "../Model/ObservableGroups"; 22 | import { formatValue } from "./formatValue"; 23 | 24 | @observer 25 | export class ObservableView extends React.Component<{ 26 | observable: ObservableViewModel; 27 | timeOffsetConversion: TimeOffsetConversion; 28 | x: number; 29 | height: number; 30 | playground: PlaygroundViewModel; 31 | svgContext: SvgContext; 32 | }> { 33 | render() { 34 | const playground = this.props.playground; 35 | const o = this.props.observable.observable; 36 | const m = this.props.observable; 37 | const timeOffsetConversion = this.props.timeOffsetConversion; 38 | const x = this.props.x; 39 | 40 | const start = point({ 41 | x, 42 | y: timeOffsetConversion.getOffset(o.startTime), 43 | }); 44 | const end = point({ 45 | x, 46 | y: o.endTime 47 | ? timeOffsetConversion.getOffset(o.endTime) 48 | : this.props.height + 100, 49 | }); 50 | 51 | return ( 52 | 53 | 58 | 59 | { 66 | const p = this.props.svgContext.mouseToSvgCoordinates( 67 | new Point(e.clientX, e.clientY) 68 | ); 69 | 70 | if (o instanceof MutableObservableHistory) { 71 | m.temporaryEventT = timeOffsetConversion.getTime( 72 | p.y 73 | ); 74 | } 75 | }} 76 | onMouseLeave={() => { 77 | m.temporaryEventT = undefined; 78 | }} 79 | onClick={e => { 80 | const t = m.temporaryEventT; 81 | if ( 82 | o instanceof MutableObservableHistory && 83 | t !== undefined 84 | ) { 85 | e.preventDefault(); 86 | o.addEvent(t, o.events.length + 1); 87 | } 88 | }} 89 | onContextMenu={e => { 90 | const t = m.temporaryEventT; 91 | if ( 92 | o instanceof MutableObservableHistory && 93 | t !== undefined 94 | ) { 95 | e.preventDefault(); 96 | this.showContextMenu(o, t, e); 97 | } 98 | }} 99 | /> 100 | {(m.temporaryEventT || m.contextMenuT) && ( 101 | 111 | )} 112 | 113 | {this.renderEnd({ center: end })} 114 | 115 | {m.events.map((evt, idx) => ( 116 | 127 | ))} 128 | 129 | ); 130 | } 131 | 132 | private showContextMenu( 133 | o: MutableObservableHistory, 134 | t: number, 135 | e: React.MouseEvent 136 | ) { 137 | this.props.observable.contextMenuT = t; 138 | ContextMenu.show( 139 | 140 | (o.endTime = t)} 144 | /> 145 | o.addEvent(t, o.events.length + 1)} 149 | /> 150 | 154 | (this.props.playground.recordingModel.startTime = t) 155 | } 156 | /> 157 | , 158 | { left: e.clientX, top: e.clientY }, 159 | () => { 160 | this.props.observable.contextMenuT = undefined; 161 | this.props.observable.selectedEventId = -1; 162 | } 163 | ); 164 | } 165 | 166 | private renderEnd({ center }: { center: Point }) { 167 | const vm = this.props.observable; 168 | const o = vm.observable; 169 | 170 | return ( 171 | { 178 | if (o instanceof MutableObservableHistory) { 179 | vm.endSelected = true; 180 | handleMouseDownOnTimedObj( 181 | e, 182 | -1, 183 | t => (o.endTime = t), 184 | this.props.playground, 185 | this.props.svgContext, 186 | this.props.timeOffsetConversion, 187 | () => (vm.endSelected = false) 188 | ); 189 | } 190 | }} 191 | onContextMenu={e => { 192 | if (o instanceof MutableObservableHistory) { 193 | e.preventDefault(); 194 | vm.endSelected = true; 195 | ContextMenu.show( 196 | 197 | (o.endTime = undefined)} 201 | /> 202 | , 203 | { left: e.clientX, top: e.clientY }, 204 | () => { 205 | vm.endSelected = false; 206 | } 207 | ); 208 | } 209 | }} 210 | > 211 | 216 | 221 | 226 | 227 | ); 228 | } 229 | } 230 | 231 | @observer 232 | export class ObservableEventView extends React.Component<{ 233 | evt: ObservableEvent; 234 | playground: PlaygroundViewModel; 235 | idx: number; 236 | x: number; 237 | observable: ObservableViewModel; 238 | timeOffsetConversion: TimeOffsetConversion; 239 | height: number; 240 | svgContext: SvgContext; 241 | }> { 242 | render(): JSX.Element { 243 | const { 244 | evt, 245 | x, 246 | timeOffsetConversion, 247 | observable, 248 | playground, 249 | svgContext, 250 | idx, 251 | } = this.props; 252 | 253 | const center = point({ 254 | x, 255 | y: timeOffsetConversion.getOffset(evt.time), 256 | }); 257 | 258 | const isLarge = 259 | playground.timedObjDragBehavior.isDataEqualTo(evt.id) || 260 | observable.selectedEventId === evt.id; 261 | 262 | if (evt.data instanceof ChildObservableViewModel) { 263 | return ( 264 | 265 | 270 | 278 | 279 | ); 280 | } 281 | 282 | let displayValue = evt.data as any; 283 | let color = "black"; 284 | 285 | if (typeof displayValue === "object" && displayValue) { 286 | const d = evt.data as any; 287 | if ("display" in d) { 288 | displayValue = displayValue.display; 289 | } 290 | 291 | if ("color" in d) { 292 | color = "" + d.color; 293 | } 294 | } 295 | 296 | return ( 297 | 298 | { 305 | if ( 306 | observable.observable instanceof 307 | MutableObservableHistory 308 | ) { 309 | e.preventDefault(); 310 | observable.selectedEventId = evt.id; 311 | this.showEventContextMenu( 312 | observable.observable, 313 | evt, 314 | e 315 | ); 316 | } 317 | }} 318 | center={center} 319 | radius={4} 320 | stroke={color} 321 | fill={color} 322 | onMouseDown={e => { 323 | if (evt instanceof MutableObservableEvent) { 324 | handleMouseDownOnTimedObj( 325 | e, 326 | evt.id, 327 | t => (evt.time = t), 328 | playground, 329 | svgContext, 330 | timeOffsetConversion 331 | ); 332 | } 333 | }} 334 | /> 335 | { 337 | if (!text) { 338 | //this.widths.delete(idx); 339 | } else { 340 | this.props.observable.textWidths.set( 341 | idx, 342 | text.getBBox().width 343 | ); 344 | } 345 | }} 346 | position={center.add(new Point(10, 0))} 347 | textAnchor="start" 348 | dominantBaseline="middle" 349 | > 350 | {formatValue(displayValue, 100)} 351 | 352 | 353 | ); 354 | } 355 | 356 | private showEventContextMenu( 357 | o: MutableObservableHistory, 358 | evt: ObservableEvent, 359 | e: React.MouseEvent 360 | ) { 361 | ContextMenu.show( 362 | 363 | o.removeEvent(evt)} 367 | /> 368 | , 369 | { left: e.clientX, top: e.clientY }, 370 | () => { 371 | this.props.observable.selectedEventId = -1; 372 | } 373 | ); 374 | } 375 | } 376 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Patents. 472 | 473 | A "contributor" is a copyright holder who authorizes use under this 474 | License of the Program or a work on which the Program is based. The 475 | work thus licensed is called the contributor's "contributor version". 476 | 477 | A contributor's "essential patent claims" are all patent claims 478 | owned or controlled by the contributor, whether already acquired or 479 | hereafter acquired, that would be infringed by some manner, permitted 480 | by this License, of making, using, or selling its contributor version, 481 | but do not include claims that would be infringed only as a 482 | consequence of further modification of the contributor version. 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"Knowingly relying" means you have 508 | actual knowledge that, but for the patent license, your conveying the 509 | covered work in a country, or your recipient's use of the covered work 510 | in a country, would infringe one or more identifiable patents in that 511 | country that you have reason to believe are valid. 512 | 513 | If, pursuant to or in connection with a single transaction or 514 | arrangement, you convey, or propagate by procuring conveyance of, a 515 | covered work, and grant a patent license to some of the parties 516 | receiving the covered work authorizing them to use, propagate, modify 517 | or convey a specific copy of the covered work, then the patent license 518 | you grant is automatically extended to all recipients of the covered 519 | work and works based on it. 520 | 521 | A patent license is "discriminatory" if it does not include within 522 | the scope of its coverage, prohibits the exercise of, or is 523 | conditioned on the non-exercise of one or more of the rights that are 524 | specifically granted under this License. You may not convey a covered 525 | work if you are a party to an arrangement with a third party that is 526 | in the business of distributing software, under which you make payment 527 | to the third party based on the extent of your activity of conveying 528 | the work, and under which the third party grants, to any of the 529 | parties who would receive the covered work from you, a discriminatory 530 | patent license (a) in connection with copies of the covered work 531 | conveyed by you (or copies made from those copies), or (b) primarily 532 | for and in connection with specific products or compilations that 533 | contain the covered work, unless you entered into that arrangement, 534 | or that patent license was granted, prior to 28 March 2007. 535 | 536 | Nothing in this License shall be construed as excluding or limiting 537 | any implied license or other defenses to infringement that may 538 | otherwise be available to you under applicable patent law. 539 | 540 | 12. No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | --------------------------------------------------------------------------------