├── .gitignore ├── LICENSE ├── README.md ├── pom.xml └── src └── main ├── java └── es │ └── uvigo │ └── ei │ └── sing │ ├── javafx │ └── webview │ │ └── Java2JavascriptUtils.java │ └── webviewdemo │ ├── WebViewDemo.java │ └── backend │ ├── CalculatorService.java │ ├── Fruit.java │ └── FruitsService.java └── resources ├── css ├── bootstrap-theme.min.css └── bootstrap.min.css ├── index.html ├── js ├── calculator-service.js ├── controller-angular.js └── fruits-service.js ├── jslib ├── angular.min.js ├── bootstrap.min.js └── jquery-1.9.1.min.js └── style.css /.gitignore: -------------------------------------------------------------------------------- 1 | target/ 2 | pom.xml.tag 3 | pom.xml.releaseBackup 4 | pom.xml.versionsBackup 5 | pom.xml.next 6 | release.properties 7 | .settings 8 | .project 9 | .classpath 10 | 11 | -------------------------------------------------------------------------------- /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 6 | 7 | 1. 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Download and install Java 8. 9 | 2. Install [Apache Maven](http://maven.apache.org). 10 | 11 | 12 | Download, compile and run 13 | ========================= 14 | * Clone this repository (or download directly from github) 15 | ``` 16 | git clone https://github.com/lipido/javafxwebview.git 17 | ``` 18 | * Compile and run 19 | ``` 20 | cd javafxwebview 21 | mvn package 22 | cd target 23 | java -jar javafx-webview-demo-0.0.1-SNAPSHOT.jar 24 | ``` 25 | 26 | Warning: Windows Users 27 | ------------- 28 | There is a bug since Java 8 update 60 in Windows (http://hg.openjdk.java.net/openjfx/9-dev/rt/rev/d4f8c9496683), 29 | where WebView is unable to load resources of the webpage if the project is delivered inside a JAR file. 30 | The workaround is to run the project in this way: 31 | ``` 32 | cd javafxwebview 33 | mvn package 34 | cd target 35 | java -cp classes;dependency-jars\json-simple-1.1.1.jar 36 | es.uvigo.ei.sing.webviewdemo.WebViewDemo 37 | ``` 38 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 3 | 4.0.0 4 | sing 5 | javafx-webview-demo 6 | 0.0.1-SNAPSHOT 7 | 8 | 9 | com.googlecode.json-simple 10 | json-simple 11 | 1.1.1 12 | 13 | 14 | 15 | 16 | 17 | maven-compiler-plugin 18 | 19 | 1.8 20 | 1.8 21 | 22 | 23 | 24 | 25 | org.apache.maven.plugins 26 | maven-jar-plugin 27 | 28 | 29 | **/log4j.properties 30 | 31 | 32 | 33 | true 34 | es.uvigo.ei.sing.webviewdemo.WebViewDemo 35 | dependency-jars/ 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | org.apache.maven.plugins 44 | maven-dependency-plugin 45 | 2.5.1 46 | 47 | 48 | copy-dependencies 49 | package 50 | 51 | copy-dependencies 52 | 53 | 54 | 55 | runtime 56 | ${project.build.directory}/dependency-jars/ 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /src/main/java/es/uvigo/ei/sing/javafx/webview/Java2JavascriptUtils.java: -------------------------------------------------------------------------------- 1 | package es.uvigo.ei.sing.javafx.webview; 2 | 3 | import java.util.HashMap; 4 | import java.util.HashSet; 5 | import java.util.Map; 6 | import java.util.Set; 7 | 8 | import javafx.beans.value.ChangeListener; 9 | import javafx.beans.value.ObservableValue; 10 | import javafx.event.EventHandler; 11 | import javafx.scene.web.WebEngine; 12 | import javafx.scene.web.WebEvent; 13 | import netscape.javascript.JSObject; 14 | 15 | /** 16 | * Utilities to connect Java objects as javascript objects in a WebEngine. 17 | * 18 | * It also allows to call callback functions. 19 | * 20 | * @author lipido 21 | */ 22 | public class Java2JavascriptUtils { 23 | 24 | private static Map> 25 | backendObjects = new HashMap<>(); 26 | private static Set 27 | webEnginesWithAlertChangeListener = new HashSet<>(); 28 | 29 | private static boolean changing = false; 30 | 31 | /** 32 | * Registers a backend Java object as a Javascript variable. 33 | * The real connection to the webEngine comes when the javascript performs 34 | * an special "alert" message by invoking 35 | * "alert('__CONNECT__BACKEND__varname')" where varname is the javascript 36 | * variable we want to make available. 37 | * 38 | * The call to this function has to be performed before the engine loads the 39 | * first page (where the alert call should take place). 40 | * 41 | * @param webEngine The webEngine to register the new variable. 42 | * @param varname The name of the variable in javascript. 43 | * @param backend The Java backend object. 44 | */ 45 | public static void connectBackendObject( 46 | final WebEngine webEngine, 47 | final String varname, 48 | final Object backend) { 49 | 50 | registerBackendObject(webEngine, varname, backend); 51 | 52 | // create a onAlertChangeListener. We always want to listen 53 | // to onAlert events, since via this event, the javascript front-end 54 | // will send us an special "alert" message asking to connect the 55 | // backend object as soon as possible(*). 56 | // However, if the programmer also wants to set 57 | // his own onAlert handler for this web engine, 58 | // we will create a handlerwrapper with our 59 | // behavior plus the programmer's one. 60 | 61 | // (*) It was impossible for me to re-connect the backend object 62 | // when the users navigates from one page to another page where the 63 | // backend object was also needed. The navigation erases any javascript 64 | // variables, so the backend has to be reconnected. However, 65 | // The recommended state change listeners on 66 | // webEngine were executed too late, after javascript code asking for the 67 | // backend object is executed, so it was not a solution. 68 | // The only way I found is to place a custom javacript "signaling" 69 | // code to ask Java to reconnect the backend object. 70 | // The solution was "alert", because we can listen to alert calls from 71 | // javascript, so via an special "alert" message, we can connect the 72 | // backend object again. 73 | // It is not a bad solution, because the programmer has only to inlude 74 | // a simple additional script (such as "mybackend.js") in the page 75 | // before any other scripts uses the backend variable. 76 | if (!webEnginesWithAlertChangeListener.contains(webEngine)) { 77 | if (webEngine.getOnAlert() == null) { 78 | webEngine.setOnAlert(new AlertEventHandlerWrapper(webEngine, 79 | null)); 80 | } 81 | 82 | webEngine.onAlertProperty().addListener( 83 | new ChangeListener>>() { 84 | 85 | @Override 86 | public void changed( 87 | ObservableValue 88 | >> arg0, 89 | EventHandler> previous, 90 | final EventHandler> newHandler) { 91 | 92 | if (!changing) { // avoid recursive calls 93 | changing = true; 94 | webEngine.setOnAlert( 95 | new AlertEventHandlerWrapper( 96 | webEngine, 97 | newHandler)); 98 | changing = false; 99 | } 100 | } 101 | }); 102 | } 103 | webEnginesWithAlertChangeListener.add(webEngine); 104 | } 105 | 106 | private static void registerBackendObject(final WebEngine webEngine, 107 | final String varname, final Object backend) { 108 | Map webEngineBridges = backendObjects.get(webEngine); 109 | if (webEngineBridges == null){ 110 | webEngineBridges = new HashMap<>(); 111 | backendObjects.put(webEngine, webEngineBridges); 112 | 113 | } 114 | webEngineBridges.put(varname, backend); 115 | 116 | } 117 | 118 | private static void connectToWebEngine(WebEngine engine, String varname) { 119 | if ( backendObjects.containsKey(engine) && 120 | backendObjects.get(engine).containsKey(varname)) { 121 | 122 | JSObject window = (JSObject) engine.executeScript("window"); 123 | window.setMember(varname, backendObjects.get(engine).get(varname)); 124 | } 125 | } 126 | 127 | 128 | public static void call(JSObject callback, Object ... arguments) { 129 | String argumentsList = ""; 130 | for (int i = 0; i < arguments.length; i++) { 131 | ((JSObject)callback).setMember("___res___"+i, arguments[i]); 132 | argumentsList+="this.___res___"+i; 133 | if (i != arguments.length -1) { 134 | argumentsList+=","; 135 | } 136 | } 137 | 138 | String call = "this("+argumentsList+")"; 139 | ((JSObject)callback).eval(call); 140 | } 141 | 142 | private final static class AlertEventHandlerWrapper 143 | implements EventHandler> { 144 | 145 | private static final 146 | String CONNECT_BACKEND_MAGIC_WORD = "__CONNECT__BACKEND__"; 147 | private final EventHandler> wrappedHandler; 148 | private WebEngine engine; 149 | 150 | private AlertEventHandlerWrapper( 151 | WebEngine engine, 152 | EventHandler> wrappedHandler) { 153 | 154 | this.engine = engine; 155 | this.wrappedHandler = wrappedHandler; 156 | } 157 | 158 | @Override 159 | public void handle(WebEvent arg0) { 160 | if (arg0.getData().contains(CONNECT_BACKEND_MAGIC_WORD)) { 161 | String varname = arg0.getData().substring( 162 | CONNECT_BACKEND_MAGIC_WORD.length()); 163 | 164 | connectToWebEngine(engine, varname); 165 | } 166 | else if (wrappedHandler != null) wrappedHandler.handle(arg0); 167 | } 168 | } 169 | } -------------------------------------------------------------------------------- /src/main/java/es/uvigo/ei/sing/webviewdemo/WebViewDemo.java: -------------------------------------------------------------------------------- 1 | package es.uvigo.ei.sing.webviewdemo; 2 | 3 | import static 4 | es.uvigo.ei.sing.javafx.webview.Java2JavascriptUtils.connectBackendObject; 5 | 6 | import javafx.application.Application; 7 | import javafx.event.EventHandler; 8 | import javafx.scene.Scene; 9 | import javafx.scene.web.WebEvent; 10 | import javafx.scene.web.WebView; 11 | import javafx.stage.Stage; 12 | import es.uvigo.ei.sing.webviewdemo.backend.CalculatorService; 13 | import es.uvigo.ei.sing.webviewdemo.backend.FruitsService; 14 | 15 | public class WebViewDemo extends Application { 16 | 17 | private final String PAGE = "/index.html"; 18 | 19 | @Override 20 | public void start(Stage primaryStage) { 21 | createWebView(primaryStage, PAGE); 22 | } 23 | 24 | private void createWebView(Stage primaryStage, String page) { 25 | 26 | // create the JavaFX webview 27 | final WebView webView = new WebView(); 28 | 29 | // connect the FruitsService instance as "fruitsService" 30 | // javascript variable 31 | connectBackendObject( 32 | webView.getEngine(), 33 | "fruitsService", new FruitsService()); 34 | 35 | // connect the CalculatorService instance as "calculatorService" 36 | // javascript variable 37 | connectBackendObject( 38 | webView.getEngine(), 39 | "calculatorService", new CalculatorService()); 40 | 41 | // show "alert" Javascript messages in stdout (useful to debug) 42 | webView.getEngine().setOnAlert(new EventHandler>(){ 43 | @Override 44 | public void handle(WebEvent arg0) { 45 | System.err.println("alertwb1: " + arg0.getData()); 46 | } 47 | }); 48 | 49 | // load index.html 50 | webView.getEngine().load( 51 | getClass().getResource(page). 52 | toExternalForm()); 53 | 54 | primaryStage.setScene(new Scene(webView)); 55 | primaryStage.setTitle("WebView with Java backend"); 56 | primaryStage.show(); 57 | } 58 | 59 | public static void main(String[] args) { 60 | System.setProperty("prism.lcdtext", "false"); // enhance fonts 61 | launch(args); 62 | } 63 | } 64 | -------------------------------------------------------------------------------- /src/main/java/es/uvigo/ei/sing/webviewdemo/backend/CalculatorService.java: -------------------------------------------------------------------------------- 1 | package es.uvigo.ei.sing.webviewdemo.backend; 2 | 3 | 4 | public class CalculatorService { 5 | 6 | // sync function 7 | public int sum(int a, int b){ 8 | return a + b; 9 | } 10 | } 11 | -------------------------------------------------------------------------------- /src/main/java/es/uvigo/ei/sing/webviewdemo/backend/Fruit.java: -------------------------------------------------------------------------------- 1 | package es.uvigo.ei.sing.webviewdemo.backend; 2 | 3 | public class Fruit { 4 | private String name; 5 | 6 | public Fruit(String name) { 7 | this.name = name; 8 | } 9 | 10 | public String getName() { 11 | return this.name; 12 | } 13 | } -------------------------------------------------------------------------------- /src/main/java/es/uvigo/ei/sing/webviewdemo/backend/FruitsService.java: -------------------------------------------------------------------------------- 1 | package es.uvigo.ei.sing.webviewdemo.backend; 2 | 3 | import static es.uvigo.ei.sing.javafx.webview.Java2JavascriptUtils.call; 4 | import static java.lang.Thread.sleep; 5 | import static javafx.application.Platform.runLater; 6 | 7 | import static java.util.Arrays.asList; 8 | import static java.util.Collections.shuffle; 9 | import netscape.javascript.JSObject; 10 | 11 | import java.util.List; 12 | 13 | public class FruitsService { 14 | 15 | // a database... WARNING: I use a static field, since references from javascript seem not to be taken into account for GC, then, 16 | // if I set fruits as a local variable inside loadFruits, they could be garbage collected and not seen anymore from 17 | // javascript 18 | 19 | private static Fruit[] fruits; 20 | static { 21 | fruits = 22 | new Fruit[] { new Fruit("orange"), new Fruit("apple"), new Fruit("banana"), new Fruit("strawberry") }; 23 | } 24 | // async function 25 | public void loadFruits(final JSObject callbackfunction){ 26 | 27 | 28 | 29 | // launch a background thread (async) 30 | new Thread( () -> { 31 | try { 32 | shuffleFruits(); 33 | sleep(1000); //add some processing simulation... 34 | runLater( () -> { 35 | call(callbackfunction, (Object) FruitsService.fruits); 36 | }); 37 | 38 | } catch (InterruptedException e) { } 39 | } 40 | ).start(); 41 | } 42 | 43 | private static void shuffleFruits() { 44 | List list = asList(FruitsService.fruits); 45 | shuffle(list); 46 | FruitsService.fruits = list.toArray(new Fruit[]{}); 47 | } 48 | } 49 | -------------------------------------------------------------------------------- /src/main/resources/css/bootstrap-theme.min.css: -------------------------------------------------------------------------------- 1 | /*! 2 | * Bootstrap v3.3.1 (http://getbootstrap.com) 3 | * Copyright 2011-2014 Twitter, Inc. 4 | * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) 5 | */.btn-default,.btn-primary,.btn-success,.btn-info,.btn-warning,.btn-danger{text-shadow:0 -1px 0 rgba(0,0,0,.2);-webkit-box-shadow:inset 0 1px 0 rgba(255,255,255,.15),0 1px 1px rgba(0,0,0,.075);box-shadow:inset 0 1px 0 rgba(255,255,255,.15),0 1px 1px rgba(0,0,0,.075)}.btn-default:active,.btn-primary:active,.btn-success:active,.btn-info:active,.btn-warning:active,.btn-danger:active,.btn-default.active,.btn-primary.active,.btn-success.active,.btn-info.active,.btn-warning.active,.btn-danger.active{-webkit-box-shadow:inset 0 3px 5px 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GradientType=0);background-repeat:repeat-x}.well{background-image:-webkit-linear-gradient(top,#e8e8e8 0,#f5f5f5 100%);background-image:-o-linear-gradient(top,#e8e8e8 0,#f5f5f5 100%);background-image:-webkit-gradient(linear,left top,left bottom,from(#e8e8e8),to(#f5f5f5));background-image:linear-gradient(to bottom,#e8e8e8 0,#f5f5f5 100%);filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#ffe8e8e8', endColorstr='#fff5f5f5', GradientType=0);background-repeat:repeat-x;border-color:#dcdcdc;-webkit-box-shadow:inset 0 1px 3px rgba(0,0,0,.05),0 1px 0 rgba(255,255,255,.1);box-shadow:inset 0 1px 3px rgba(0,0,0,.05),0 1px 0 rgba(255,255,255,.1)} -------------------------------------------------------------------------------- /src/main/resources/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | My HTML File 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 |

Java 8 desktop app with Web-based UI

28 |

A JavaFX desktop application using WebView. The main logic is programmed 29 | in pure Java, but the user interface is based on state of the art web 30 | technologies: AngularJS (user controller) and Bootstrap (style and layout). 31 |

32 |
33 |
34 |
35 |
36 |
37 |

Calculator (synchronous example)

38 |
39 |
40 | 41 | Number1:
42 | Number2:
43 | 44 |

45 | Result of Number1 + Number2 is: {{ sum() }}
46 | (the result is computed in pure Java via a synchronous call) 47 |

48 |
49 |
50 |
51 |
52 |
53 |
54 |

Fruits (asynchronous example)

55 |
56 |
57 | Fruits: (data is generated in pure Java via an asynchronous call) 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 69 | 70 | 71 | 72 |
Name
{{fruit.getName()}}
73 | 74 |
75 |
76 |
77 | 78 |
79 |
80 | Reload page 81 | 82 | 83 | -------------------------------------------------------------------------------- /src/main/resources/js/calculator-service.js: -------------------------------------------------------------------------------- 1 | // Force java to connect the calculatorService object 2 | // This is the only way I found to connect the java 3 | // object before any subsequent javascript files are executed, 4 | // such as angular controllers. This sentence must be called 5 | // before any other script which will use calculatorService 6 | alert("__CONNECT__BACKEND__calculatorService"); 7 | -------------------------------------------------------------------------------- /src/main/resources/js/controller-angular.js: -------------------------------------------------------------------------------- 1 | 2 | var app = angular.module('javafxwebdemo', []); 3 | 4 | app.controller('JavaFXWebDemoController', function ($scope) { 5 | 6 | // fruits 7 | $scope.fruits = []; 8 | $scope.update=function(){ 9 | $scope.fruits = [{getName: function() {return 'loading...'}}]; 10 | var callback = function(data) { 11 | 12 | // clone the array, because if we use the raw array returned from Java, 13 | // a pseudo-javascript Array is created which returns different object 14 | // wrapper instances each time a position is accessed 15 | // for example: data[0] === data[0] is false!!, so Angular will throw a 16 | // digest infinite loop exception because elements are allways dirty 17 | $scope.fruits = Array.from(data); 18 | 19 | $scope.$apply(); 20 | } 21 | fruitsService.loadFruits(callback); 22 | } 23 | 24 | $scope.update(); 25 | // calculator 26 | $scope.number1 = 0; 27 | $scope.number2 = 2; 28 | 29 | $scope.sum = function() { 30 | return calculatorService.sum($scope.number1, $scope.number2); 31 | } 32 | }); 33 | 34 | -------------------------------------------------------------------------------- /src/main/resources/js/fruits-service.js: -------------------------------------------------------------------------------- 1 | // Force java to connect the fruitsService object 2 | // This is the only way I found to connect the java 3 | // object before any subsequent javascript files are executed, 4 | // such as angular controllers. This sentence must be called 5 | // before any other script which will use fruitsService 6 | alert("__CONNECT__BACKEND__fruitsService"); -------------------------------------------------------------------------------- /src/main/resources/jslib/bootstrap.min.js: -------------------------------------------------------------------------------- 1 | /*! 2 | * Bootstrap v3.3.1 (http://getbootstrap.com) 3 | * Copyright 2011-2014 Twitter, Inc. 4 | * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) 5 | */ 6 | if("undefined"==typeof jQuery)throw new Error("Bootstrap's JavaScript requires jQuery");+function(a){var b=a.fn.jquery.split(" ")[0].split(".");if(b[0]<2&&b[1]<9||1==b[0]&&9==b[1]&&b[2]<1)throw new Error("Bootstrap's JavaScript requires jQuery version 1.9.1 or higher")}(jQuery),+function(a){"use strict";function b(){var a=document.createElement("bootstrap"),b={WebkitTransition:"webkitTransitionEnd",MozTransition:"transitionend",OTransition:"oTransitionEnd 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