| /******************************************************************************* |
| * Copyright (c) 2007 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: |
| * Hisashi MIYASHITA - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.actf.ai.navigator.extension; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.actf.ai.navigator.IMediaControl; |
| import org.eclipse.actf.ai.navigator.NavigatorPlugin; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtension; |
| import org.eclipse.core.runtime.Platform; |
| |
| |
| |
| |
| public class MediaControlExtension { |
| private static final String TAG_CONTROLLER = "controller"; |
| |
| private static final String ATTR_CLASS = "class"; |
| |
| private static MediaControlExtension[] cachedExtensions; |
| |
| public static MediaControlExtension[] getExtensions() { |
| if (cachedExtensions != null) |
| return cachedExtensions; |
| |
| IExtension[] extensions = Platform.getExtensionRegistry().getExtensionPoint(NavigatorPlugin.ID, "MediaControl") |
| .getExtensions(); |
| List<MediaControlExtension> l = new ArrayList<MediaControlExtension>(); |
| for (int i = 0; i < extensions.length; i++) { |
| IConfigurationElement[] configElements = extensions[i].getConfigurationElements(); |
| for (int j = 0; j < configElements.length; j++) { |
| MediaControlExtension ex = parseExtension(configElements[j], l.size()); |
| if (ex != null) |
| l.add(ex); |
| } |
| } |
| cachedExtensions = l.toArray(new MediaControlExtension[l.size()]); |
| return cachedExtensions; |
| } |
| |
| private static MediaControlExtension parseExtension(IConfigurationElement configElement, int idx) { |
| if (!configElement.getName().equals(TAG_CONTROLLER)) |
| return null; |
| try { |
| return new MediaControlExtension(configElement); |
| } catch (Exception e) { |
| } |
| return null; |
| } |
| |
| public static void disposeExtensions() { |
| if (cachedExtensions == null) |
| return; |
| for (int i = 0; i < cachedExtensions.length; i++) { |
| cachedExtensions[i].dispose(); |
| } |
| cachedExtensions = null; |
| } |
| |
| public static void start(IMediaControl.IHandle handle) { |
| MediaControlExtension[] exs = getExtensions(); |
| if (exs == null) |
| return; |
| for (int i = 0; i < exs.length; i++) { |
| exs[i].getMediaControl().start(handle); |
| } |
| } |
| |
| public static void doDispose(IMediaControl.IHandle handle) { |
| MediaControlExtension[] exs = getExtensions(); |
| if (exs == null) |
| return; |
| for (int i = 0; i < exs.length; i++) { |
| exs[i].getMediaControl().dispose(handle); |
| } |
| } |
| |
| private final IConfigurationElement configElement; |
| |
| private IMediaControl controller; |
| |
| private MediaControlExtension(IConfigurationElement configElement) { |
| this.configElement = configElement; |
| } |
| |
| private IMediaControl getMediaControl() { |
| if (controller != null) |
| return controller; |
| try { |
| controller = (IMediaControl) configElement.createExecutableExtension(ATTR_CLASS); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| return controller; |
| } |
| |
| private void dispose() { |
| if (controller == null) |
| return; |
| controller = null; |
| } |
| |
| public static int toggleEnable() { |
| MediaControlExtension[] exs = getExtensions(); |
| int result = 0; |
| if (exs == null) |
| return IMediaControl.TOGGLE_FAIL; |
| for (int i = 0; i < exs.length; i++) { |
| result |= exs[i].getMediaControl().toggleEnabled(); |
| } |
| return result; |
| } |
| |
| public static boolean isAvailable(){ |
| MediaControlExtension[] exs = getExtensions(); |
| if (exs == null) |
| return false; |
| |
| boolean ret = false; |
| for (int i = 0; i < exs.length; i++) { |
| ret |= exs[i].getMediaControl().isAvailable(); |
| } |
| return ret; |
| } |
| |
| public static boolean toggleViewShowing() { |
| MediaControlExtension[] exs = getExtensions(); |
| boolean result = true; |
| for (int i = 0; i < exs.length; i++) { |
| result = exs[i].getMediaControl().toggleViewShowing() && result; |
| } |
| return result; |
| } |
| |
| public static boolean isEnabled() { |
| MediaControlExtension[] exs = getExtensions(); |
| if (exs == null) |
| return false; |
| |
| boolean ret = false; |
| for (int i = 0; i < exs.length; i++) { |
| ret |= exs[i].getMediaControl().isEnabled(); |
| } |
| return ret; |
| } |
| |
| public static void speakInfo(boolean flush) { |
| MediaControlExtension[] exs = getExtensions(); |
| if (exs == null) |
| return; |
| |
| for (int i = 0; i < exs.length; i++) { |
| exs[i].getMediaControl().speakInfo(flush); |
| } |
| } |
| |
| } |