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Attempt to reproduce a WebEngine loading bug in JavaFX (failed)
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<!doctype html> | |
<html> | |
<head> | |
<meta charset="UTF-8"> | |
<title>Document</title> | |
<script type="text/javascript" src="http://code.jquery.com/jquery-2.2.1.min.js"></script> | |
</head> | |
<body> | |
<h1 id="title">FILE 1</h1> | |
<a href="#" onclick="event.preventDefault(); ctr.load2();">load 2</a> | |
<script> | |
alert('file1'); | |
$(document).ready(function () { | |
// use variableName here | |
$("#title").html(variableName); | |
alert(variableName); | |
}); | |
</script> | |
</body> | |
</html> |
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<!doctype html> | |
<html> | |
<head> | |
<meta charset="UTF-8"> | |
<title>Document</title> | |
<script type="text/javascript" src="http://code.jquery.com/jquery-2.2.1.min.js"></script> | |
</head> | |
<body> | |
<h1 id="title">FILE 2</h1> | |
<a href="#" onclick="event.preventDefault(); ctr.load1();">load 1</a> | |
<script> | |
alert('file2'); | |
$(document).ready(function () { | |
// use variableName here | |
$("#title").html(variable2Name); | |
alert(variable2Name); | |
}); | |
</script> | |
</body> | |
</html> |
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import javafx.application.Application; | |
import javafx.event.EventHandler; | |
import javafx.scene.Scene; | |
import javafx.scene.web.WebEngine; | |
import javafx.scene.web.WebEvent; | |
import javafx.scene.web.WebView; | |
import javafx.stage.Stage; | |
import netscape.javascript.JSObject; | |
/** | |
* https://stackoverflow.com/questions/35758313/consistent-setmember-on-javafx-window | |
* | |
* @author okr | |
* @date 08.03.2016 | |
*/ | |
public class WebEngineLoadBug extends Application { | |
private WebEngine webEngine; | |
private WebView webView; | |
/** | |
* @param args ignored. | |
*/ | |
public static void main(final String[] args) { | |
launch(args); | |
} | |
@Override | |
public void start(final Stage primaryStage) throws Exception { | |
webView = new WebView(); | |
webEngine = webView.getEngine(); | |
// alert is the safest way to pass on data | |
webEngine.setOnAlert(new EventHandler<WebEvent<String>>() { | |
@Override | |
public void handle(WebEvent<String> event) { | |
System.out.println(event.getData()); | |
} | |
}); | |
primaryStage.setScene(new Scene(webView)); | |
primaryStage.show(); | |
load1(); | |
} | |
public void load2() { | |
System.out.println("loading 2 ..."); | |
// second load | |
JSObject dom2Window = (JSObject) webEngine.executeScript("window"); | |
dom2Window.setMember("variable2Name", "variable value 2"); | |
dom2Window.setMember("ctr", this); | |
// this load does NOT work as expected, variable2Name is NOT set before JavaScript runs and it can NOT be accessed in document ready event | |
webEngine.load(WebEngineLoadBug.class.getResource("/file2.html").toExternalForm()); | |
} | |
public void load1() { | |
System.out.println("loading 1 ..."); | |
// first load | |
JSObject domWindow = (JSObject) webEngine.executeScript("window"); | |
domWindow.setMember("variableName", "variable value 1"); | |
domWindow.setMember("ctr", this); | |
// this load works perfectly, variableName is set before JavaScript runs and it can be accessed in document ready event | |
webEngine.load(WebEngineLoadBug.class.getResource("/file1.html").toExternalForm()); | |
} | |
} |
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