| /******************************************************************************* |
| * 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.core.internal.registry; |
| |
| import java.util.Arrays; |
| import java.util.Map; |
| import org.eclipse.core.runtime.IExtensionDelta; |
| import org.eclipse.core.runtime.IRegistryChangeEvent; |
| |
| /** |
| * A registry change event implementation. A filter can be specified. In that case, only |
| * deltas for the selected host will be available to clients. |
| */ |
| public final class RegistryChangeEvent implements IRegistryChangeEvent { |
| private String filter; |
| private Map deltas; |
| |
| public RegistryChangeEvent(Map deltas, String filter) { |
| this.deltas = deltas; |
| this.filter = filter; |
| } |
| |
| private RegistryDelta[] getHostDeltas() { |
| // if there is a filter, return only the delta for the selected plug-in |
| if (filter != null) { |
| RegistryDelta singleDelta = getHostDelta(filter); |
| return singleDelta == null ? new RegistryDelta[0] : new RegistryDelta[] {singleDelta}; |
| } |
| // there is no filter - return all deltas |
| return (RegistryDelta[]) deltas.values().toArray(new RegistryDelta[deltas.size()]); |
| } |
| |
| private RegistryDelta getHostDelta(String pluginId) { |
| if (filter != null && !pluginId.equals(filter)) |
| return null; |
| return (RegistryDelta) deltas.get(pluginId); |
| } |
| |
| public IExtensionDelta[] getExtensionDeltas() { |
| RegistryDelta[] hostDeltas = getHostDeltas(); |
| if (hostDeltas.length == 0) |
| return new IExtensionDelta[0]; |
| int extensionDeltasSize = 0; |
| for (int i = 0; i < hostDeltas.length; i++) |
| extensionDeltasSize += hostDeltas[i].getExtensionDeltasCount(); |
| IExtensionDelta[] extensionDeltas = new IExtensionDelta[extensionDeltasSize]; |
| for (int i = 0, offset = 0; i < hostDeltas.length; i++) { |
| IExtensionDelta[] hostExtDeltas = hostDeltas[i].getExtensionDeltas(); |
| System.arraycopy(hostExtDeltas, 0, extensionDeltas, offset, hostExtDeltas.length); |
| offset += hostExtDeltas.length; |
| } |
| return extensionDeltas; |
| } |
| |
| public IExtensionDelta[] getExtensionDeltas(String hostName) { |
| RegistryDelta hostDelta = getHostDelta(hostName); |
| if (hostDelta == null) |
| return new IExtensionDelta[0]; |
| return hostDelta.getExtensionDeltas(); |
| } |
| |
| public IExtensionDelta[] getExtensionDeltas(String hostName, String extensionPoint) { |
| RegistryDelta hostDelta = getHostDelta(hostName); |
| if (hostDelta == null) |
| return new IExtensionDelta[0]; |
| return hostDelta.getExtensionDeltas(hostName + '.' + extensionPoint); |
| } |
| |
| public IExtensionDelta getExtensionDelta(String hostName, String extensionPoint, String extension) { |
| RegistryDelta hostDelta = getHostDelta(hostName); |
| if (hostDelta == null) |
| return null; |
| return hostDelta.getExtensionDelta(hostName + '.' + extensionPoint, extension); |
| } |
| |
| public String toString() { |
| return "RegistryChangeEvent: " + Arrays.asList(getHostDeltas()); //$NON-NLS-1$ |
| } |
| } |