| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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.ui.internal.views; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.PlatformObject; |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.ui.plugin.AbstractUIPlugin; |
| |
| /** |
| * The plug-in runtime class for the views UI plug-in (id <code>"org.eclipse.ui.views"</code>). |
| * <p> |
| * This class provides static methods and fields only; it is not intended to be |
| * instantiated or subclassed by clients. |
| * </p> |
| * |
| * @since 2.1 |
| */ |
| public final class ViewsPlugin extends AbstractUIPlugin { |
| /** |
| * Views UI plug-in id (value <code>"org.eclipse.ui.views"</code>). |
| */ |
| public static final String PLUGIN_ID = "org.eclipse.ui.views"; //$NON-NLS-1$ |
| |
| private final static String ICONS_PATH = "$nl$/icons/full/";//$NON-NLS-1$ |
| |
| private static ViewsPlugin instance; |
| |
| /** |
| * Returns the singleton instance. |
| * |
| * @return the singleton instance. |
| */ |
| public static ViewsPlugin getDefault() { |
| return instance; |
| } |
| |
| /** |
| * Creates a new instance of the receiver. |
| * |
| * @see org.eclipse.core.runtime.Plugin#Plugin() |
| */ |
| public ViewsPlugin() { |
| super(); |
| instance = this; |
| } |
| |
| /** |
| * Get the workbench image with the given path relative to |
| * ICON_PATH. |
| * @param relativePath |
| * @return ImageDescriptor |
| */ |
| public static ImageDescriptor getViewImageDescriptor(String relativePath){ |
| return imageDescriptorFromPlugin(PLUGIN_ID, ICONS_PATH + relativePath); |
| } |
| |
| /** |
| * If it is possible to adapt the given object to the given type, this |
| * returns the adapter. Performs the following checks: |
| * |
| * <ol> |
| * <li>Returns <code>sourceObject</code> if it is an instance of the |
| * adapter type.</li> |
| * <li>If sourceObject implements IAdaptable, it is queried for adapters.</li> |
| * <li>If sourceObject is not an instance of PlatformObject (which would have |
| * already done so), the adapter manager is queried for adapters</li> |
| * </ol> |
| * |
| * Otherwise returns null. |
| * |
| * @param sourceObject |
| * object to adapt, or null |
| * @param adapter |
| * type to adapt to |
| * @param activatePlugins |
| * true if IAdapterManager.loadAdapter should be used (may trigger plugin activation) |
| * @return a representation of sourceObject that is assignable to the |
| * adapter type, or null if no such representation exists |
| */ |
| public static Object getAdapter(Object sourceObject, Class adapter, boolean activatePlugins) { |
| Assert.isNotNull(adapter); |
| if (sourceObject == null) { |
| return null; |
| } |
| if (adapter.isInstance(sourceObject)) { |
| return sourceObject; |
| } |
| |
| if (sourceObject instanceof IAdaptable) { |
| IAdaptable adaptable = (IAdaptable) sourceObject; |
| |
| Object result = adaptable.getAdapter(adapter); |
| if (result != null) { |
| // Sanity-check |
| Assert.isTrue(adapter.isInstance(result)); |
| return result; |
| } |
| } |
| |
| if (!(sourceObject instanceof PlatformObject)) { |
| Object result; |
| if (activatePlugins) { |
| result = Platform.getAdapterManager().loadAdapter(sourceObject, adapter.getName()); |
| } else { |
| result = Platform.getAdapterManager().getAdapter(sourceObject, adapter); |
| } |
| if (result != null) { |
| return result; |
| } |
| } |
| |
| return null; |
| } |
| } |