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/*******************************************************************************
* Copyright (c) 2000, 2016 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.help.ui.internal.browser.embedded;
import org.eclipse.core.runtime.Platform;
import org.eclipse.help.browser.IBrowser;
import org.eclipse.help.internal.base.BaseHelpSystem;
import org.eclipse.help.internal.base.HelpApplication;
import org.eclipse.osgi.service.environment.Constants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
/**
* Web browser.
*/
public class EmbeddedBrowserAdapter implements IBrowser, IBrowserCloseListener{
private EmbeddedBrowser browser;
// Thread to use in workbench mode on Windows
private UIThread2 secondThread;
private String browserType;
class UIThread2 extends Thread {
Display d;
boolean runEventLoop = true;
public UIThread2() {
super();
setDaemon(true);
setName("Help Browser UI"); //$NON-NLS-1$
}
@Override
public void run() {
d = new Display();
while (runEventLoop) {
if (!d.readAndDispatch()) {
d.sleep();
}
}
d.dispose();
}
public Display getDisplay() {
while (d == null && isAlive()) {
try {
sleep(40);
} catch (InterruptedException ie) {
}
}
return d;
}
public void dispose() {
runEventLoop = false;
}
}
/**
* Adapter constructor.
*/
public EmbeddedBrowserAdapter(String browserType) {
this.browserType = browserType;
}
public Display getBrowserDisplay() {
/* only attempt to use a second thread if the Browser's native renderer is IE */
boolean useUIThread2 = BaseHelpSystem.getMode() == BaseHelpSystem.MODE_WORKBENCH
&& Constants.OS_WIN32.equalsIgnoreCase(Platform.getOS())
&& !Constants.WS_WPF.equalsIgnoreCase(SWT.getPlatform())
&& "ie".equalsIgnoreCase(browserType); //$NON-NLS-1$
if (useUIThread2) {
if (secondThread == null) {
secondThread = new UIThread2();
secondThread.start();
}
return secondThread.getDisplay();
}
return Display.getDefault();
}
@Override
public void browserClosed() {
browser=null;
if(secondThread!=null){
secondThread.dispose();
secondThread = null;
}
}
@Override
public synchronized void displayURL(final String url) {
if (!HelpApplication.isShutdownOnClose()) {
close();
}
if (getBrowserDisplay() == Display.getCurrent()) {
uiDisplayURL(url);
} else {
getBrowserDisplay().asyncExec(() -> uiDisplayURL(url));
}
}
/**
* Must be run on UI thread
*
* @param url
*/
private void uiDisplayURL(final String url) {
getBrowser().displayUrl(url);
}
@Override
public synchronized void close() {
if (getBrowserDisplay() == Display.getCurrent()) {
uiClose();
} else {
getBrowserDisplay().syncExec(() -> uiClose());
}
}
/*
* Must be run on UI thread
*/
private void uiClose() {
if (browser != null && !browser.isDisposed()){
browser.close();
}
if(secondThread!=null){
secondThread.dispose();
secondThread=null;
}
}
/**
*
*/
private EmbeddedBrowser getBrowser() {
if (browser == null || browser.isDisposed()) {
browser = new EmbeddedBrowser();
browser.addCloseListener(this);
}
return browser;
}
@Override
public boolean isCloseSupported() {
return true;
}
@Override
public boolean isSetLocationSupported() {
return true;
}
@Override
public boolean isSetSizeSupported() {
return true;
}
@Override
public synchronized void setLocation(final int x, final int y) {
if (getBrowserDisplay() == Display.getCurrent()) {
uiSetLocation(x, y);
} else {
getBrowserDisplay().asyncExec(() -> uiSetLocation(x, y));
}
}
/*
* Must be run on UI thread
*/
private void uiSetLocation(int x, int y) {
getBrowser().setLocation(x, y);
}
@Override
public synchronized void setSize(final int width, final int height) {
if (getBrowserDisplay() == Display.getCurrent()) {
uiSetSize(width, height);
} else {
getBrowserDisplay().asyncExec(() -> uiSetSize(width, height));
}
}
/*
* Must be run on UI thread
*/
private void uiSetSize(int width, int height) {
getBrowser().setSize(width, height);
}
}
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