tests/org.eclipse.swt.tests.gtk/ManualTests/org/eclipse/swt/tests/gtk/snippets/Bug430538_JS_Set_Background.java - platform/eclipse.platform.swt - Git at Google

 /*******************************************************************************
  * Copyright (c) 2018 Red Hat and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     Red Hat - initial API and implementation
  *******************************************************************************/
 package org.eclipse.swt.tests.gtk.snippets;


 import java.util.Properties;

 import org.eclipse.swt.SWT;
 import org.eclipse.swt.browser.Browser;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Shell;

 /**
  * Copied and adapted from Snippet128
  *
  * Web-Browser that loads a static HTML page.
  * Then it uses some JavaScript to modify background.
  * @author lufimtse
  *
  */

 public class Bug430538_JS_Set_Background {
 	public static void main(String[] args) {
 		Display display = new Display();
 		final Shell shell = new Shell(display);
 		GridLayout gridLayout = new GridLayout();
 		gridLayout.numColumns = 1;
 		shell.setLayout(gridLayout);

 		Button executeJS = new Button(shell, SWT.PUSH);
 		executeJS.setText("Execute JS (Red background)");

 		Button evauateJS = new Button(shell, SWT.PUSH);
 		evauateJS.setText("Evaluate JS (Green with return val)");

 		Button evaluateGetId = new Button(shell, SWT.PUSH);
 		evaluateGetId.setText("Get paragraph content");

 		Button execDefineMethod = new Button(shell, SWT.PUSH);
 		execDefineMethod.setText("Define a method");

 		Button execUseNewlyDefineMethod = new Button(shell, SWT.PUSH);
 		execUseNewlyDefineMethod.setText("Use newly defined method");

 		final Browser browser = new Browser(shell, SWT.WEBKIT);
 		GridData gd = new GridData();
 		gd.horizontalAlignment = GridData.FILL;
 		gd.verticalAlignment = GridData.FILL;
 		gd.grabExcessHorizontalSpace = true;
 		gd.grabExcessVerticalSpace = true;
 		browser.setLayoutData(gd);
 		String html = "<body>Hello<br>world</body>";
 		browser.setText(html);

 		// Append Webkit version into snippet title.
 		String SWT_WEBKITGTK_VERSION = "org.eclipse.swt.internal.webkitgtk.version"; //$NON-NLS-1$
 		Properties sp = System.getProperties();
 		String webkitGtkVer = sp.getProperty(SWT_WEBKITGTK_VERSION);
 		shell.setText("Webkit version: " + webkitGtkVer);

 		// EXECUTE
 		executeJS.addListener(SWT.MouseDown, ev -> {
 			String script = "document.body.style.backgroundColor = 'red'; function hullo() {return 'hi'}; hullo()";
 			browser.execute(script);
 		});


 		// EVALUATE << NOT EXECUTE.
 		evauateJS.addListener(SWT.MouseDown, ev -> {
 			String script = "return 1 + 2; document.body.style.backgroundColor = 'green'; function hullo() {return 'hi'}; hullo()";
 			String result = (String) browser.evaluate(script);
 			System.out.println("Java: returned: " + result);
 		});

 		evaluateGetId.addListener(SWT.MouseDown, ev -> {
 			String script = "function hullo() {return document.getElementById('myid').childNodes[0].nodeValue;}; hullo()";
 			String result = (String) browser.evaluate(script);
 			System.out.println("Java: returned: " + result);
 		});

 		execDefineMethod.addListener(SWT.MouseDown, ev -> {
 			String script = "function myNewFunc() {document.body.style.backgroundColor = 'red';return 'hello world'}";
 			browser.execute(script);
 		});
 		execUseNewlyDefineMethod.addListener(SWT.MouseDown, ev -> {
 			String script = "myNewFunc()";
 			browser.execute(script);
 		});


  	    shell.open();
 	    while (!shell.isDisposed ()) {
 	        if (!display.readAndDispatch ()) display.sleep ();
 	    }
 	    display.dispose ();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2018 Red Hat and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* Red Hat - initial API and implementation
	*******************************************************************************/
	package org.eclipse.swt.tests.gtk.snippets;


	import java.util.Properties;

	import org.eclipse.swt.SWT;
	import org.eclipse.swt.browser.Browser;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.Shell;

	/**
	* Copied and adapted from Snippet128
	*
	* Web-Browser that loads a static HTML page.
	* Then it uses some JavaScript to modify background.
	* @author lufimtse
	*
	*/

	public class Bug430538_JS_Set_Background {
	public static void main(String[] args) {
	Display display = new Display();
	final Shell shell = new Shell(display);
	GridLayout gridLayout = new GridLayout();
	gridLayout.numColumns = 1;
	shell.setLayout(gridLayout);

	Button executeJS = new Button(shell, SWT.PUSH);
	executeJS.setText("Execute JS (Red background)");

	Button evauateJS = new Button(shell, SWT.PUSH);
	evauateJS.setText("Evaluate JS (Green with return val)");

	Button evaluateGetId = new Button(shell, SWT.PUSH);
	evaluateGetId.setText("Get paragraph content");

	Button execDefineMethod = new Button(shell, SWT.PUSH);
	execDefineMethod.setText("Define a method");

	Button execUseNewlyDefineMethod = new Button(shell, SWT.PUSH);
	execUseNewlyDefineMethod.setText("Use newly defined method");

	final Browser browser = new Browser(shell, SWT.WEBKIT);
	GridData gd = new GridData();
	gd.horizontalAlignment = GridData.FILL;
	gd.verticalAlignment = GridData.FILL;
	gd.grabExcessHorizontalSpace = true;
	gd.grabExcessVerticalSpace = true;
	browser.setLayoutData(gd);
	String html = "<body>Hello<br>world</body>";
	browser.setText(html);

	// Append Webkit version into snippet title.
	String SWT_WEBKITGTK_VERSION = "org.eclipse.swt.internal.webkitgtk.version"; //$NON-NLS-1$
	Properties sp = System.getProperties();
	String webkitGtkVer = sp.getProperty(SWT_WEBKITGTK_VERSION);
	shell.setText("Webkit version: " + webkitGtkVer);

	// EXECUTE
	executeJS.addListener(SWT.MouseDown, ev -> {
	String script = "document.body.style.backgroundColor = 'red'; function hullo() {return 'hi'}; hullo()";
	browser.execute(script);
	});


	// EVALUATE << NOT EXECUTE.
	evauateJS.addListener(SWT.MouseDown, ev -> {
	String script = "return 1 + 2; document.body.style.backgroundColor = 'green'; function hullo() {return 'hi'}; hullo()";
	String result = (String) browser.evaluate(script);
	System.out.println("Java: returned: " + result);
	});

	evaluateGetId.addListener(SWT.MouseDown, ev -> {
	String script = "function hullo() {return document.getElementById('myid').childNodes[0].nodeValue;}; hullo()";
	String result = (String) browser.evaluate(script);
	System.out.println("Java: returned: " + result);
	});

	execDefineMethod.addListener(SWT.MouseDown, ev -> {
	String script = "function myNewFunc() {document.body.style.backgroundColor = 'red';return 'hello world'}";
	browser.execute(script);
	});
	execUseNewlyDefineMethod.addListener(SWT.MouseDown, ev -> {
	String script = "myNewFunc()";
	browser.execute(script);
	});


	shell.open();
	while (!shell.isDisposed ()) {
	if (!display.readAndDispatch ()) display.sleep ();
	}
	display.dispose ();
	}
	}