| /******************************************************************************* |
| * 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 |
| * Martin Oberhuber (Wind River) - [352077] error dialogs when just probing browser |
| *******************************************************************************/ |
| package org.eclipse.help.ui.internal.browser.embedded; |
| |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.help.browser.IBrowser; |
| import org.eclipse.help.browser.IBrowserFactory; |
| import org.eclipse.help.internal.HelpPlugin; |
| import org.eclipse.help.internal.base.BaseHelpSystem; |
| import org.eclipse.help.ui.internal.HelpUIEventLoop; |
| import org.eclipse.help.ui.internal.HelpUIPlugin; |
| import org.eclipse.osgi.service.environment.Constants; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.SWTError; |
| import org.eclipse.swt.browser.Browser; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Shell; |
| |
| public class EmbeddedBrowserFactory implements IBrowserFactory { |
| private boolean tested = false; |
| |
| private boolean available = false; |
| private String browserType; |
| |
| /** |
| * Constructor. |
| */ |
| public EmbeddedBrowserFactory() { |
| super(); |
| } |
| |
| @Override |
| public boolean isAvailable() { |
| if (BaseHelpSystem.getMode() == BaseHelpSystem.MODE_STANDALONE) { |
| try { |
| if (HelpUIEventLoop.isRunning()) { |
| Display.getDefault().syncExec(() -> test()); |
| } |
| } catch (Exception e) { |
| // just in case |
| } |
| } else { |
| test(); |
| } |
| tested = true; |
| return available; |
| } |
| |
| /** |
| * Must run on UI thread |
| * |
| * @return |
| */ |
| private boolean test() { |
| if (!Constants.OS_WIN32.equalsIgnoreCase(Platform.getOS()) |
| && !Constants.OS_LINUX.equalsIgnoreCase(Platform.getOS())) { |
| return false; |
| } |
| if (!tested) { |
| tested = true; |
| Shell sh = new Shell(); |
| try { |
| Browser browser = new Browser(sh, SWT.NONE); |
| browserType = browser.getBrowserType(); |
| available = true; |
| } catch (SWTError se) { |
| if (se.code == SWT.ERROR_NO_HANDLES) { |
| // Browser not implemented |
| available = false; |
| } else { |
| Status errorStatus = new Status(IStatus.WARNING, HelpUIPlugin.PLUGIN_ID, IStatus.OK, |
| "An error occurred during creation of embedded help browser.", new Exception(se)); //$NON-NLS-1$ |
| HelpPlugin.getDefault().getLog().log(errorStatus); |
| } |
| } catch (Exception e) { |
| // Browser not implemented |
| } |
| if (sh != null && !sh.isDisposed()) |
| sh.dispose(); |
| } |
| return available; |
| } |
| |
| @Override |
| public IBrowser createBrowser() { |
| return new EmbeddedBrowserAdapter(browserType); |
| } |
| } |