| /******************************************************************************* |
| * Copyright (c) 2003, 2005 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 |
| *******************************************************************************/ |
| /* |
| * Created on Feb 10, 2004 |
| * |
| * To change the template for this generated file go to |
| * Window>Preferences>Java>Code Generation>Code and Comments |
| */ |
| package org.eclipse.wst.common.frameworks.internal.enablement; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.eclipse.core.resources.IProject; |
| |
| |
| /** |
| * @author schacher |
| * |
| * To change the template for this generated type comment go to |
| * Window>Preferences>Java>Code Generation>Code and Comments |
| */ |
| public class EnablementIdentifier implements IEnablementIdentifier { |
| |
| private final static int HASH_FACTOR = 89; |
| |
| private final static int HASH_INITIAL = EnablementIdentifier.class.getName().hashCode(); |
| |
| private final static Set strongReferences = new HashSet(); |
| |
| private Set functionGroupIds; |
| |
| private transient String[] functionGroupIdsAsArray; |
| |
| private boolean enabled; |
| |
| private transient int hashCode; |
| |
| private transient boolean hashCodeComputed; |
| |
| private String id; |
| |
| private List identifierListeners; |
| |
| private transient String string; |
| |
| private IProject project; |
| |
| protected EnablementIdentifier(String id) { |
| this(id, null); |
| } |
| |
| protected EnablementIdentifier(String id, IProject project) { |
| if (id == null) |
| throw new NullPointerException(); |
| this.id = id; |
| this.project = project; |
| } |
| |
| public void addIdentifierListener(IEnablementIdentifierListener identifierListener) { |
| if (identifierListener == null) |
| throw new NullPointerException(); |
| |
| if (identifierListeners == null) |
| identifierListeners = new ArrayList(); |
| |
| if (!identifierListeners.contains(identifierListener)) |
| identifierListeners.add(identifierListener); |
| |
| strongReferences.add(this); |
| } |
| |
| public int compareTo(Object object) { |
| EnablementIdentifier castedObject = (EnablementIdentifier) object; |
| return Util.compare(id, castedObject.id); |
| |
| } |
| |
| public boolean equals(Object object) { |
| if (!(object instanceof EnablementIdentifier)) |
| return false; |
| |
| EnablementIdentifier castedObject = (EnablementIdentifier) object; |
| boolean equals = Util.equals(id, castedObject.id); |
| return equals; |
| } |
| |
| protected void fireIdentifierChanged(EnablementIdentifierEvent functionIdentifierEvent) { |
| if (functionIdentifierEvent == null) |
| throw new NullPointerException(); |
| |
| if (identifierListeners != null) { |
| synchronized (identifierListeners) { |
| for (int i = 0; i < identifierListeners.size(); i++) |
| ((IEnablementIdentifierListener) identifierListeners.get(i)).identifierChanged(functionIdentifierEvent); |
| } |
| } |
| } |
| |
| public Set getFunctionGroupIds() { |
| return functionGroupIds; |
| } |
| |
| public String getId() { |
| return id; |
| } |
| |
| public int hashCode() { |
| if (!hashCodeComputed) { |
| hashCode = HASH_INITIAL; |
| hashCode = hashCode * HASH_FACTOR + Util.hashCode(id); |
| hashCodeComputed = true; |
| } |
| |
| return hashCode; |
| } |
| |
| public boolean isEnabled() { |
| return enabled; |
| } |
| |
| public void removeIdentifierListener(IEnablementIdentifierListener identifierListener) { |
| if (identifierListener == null) |
| throw new NullPointerException(); |
| |
| if (identifierListeners != null) |
| identifierListeners.remove(identifierListener); |
| |
| if (identifierListeners.isEmpty()) |
| strongReferences.remove(this); |
| } |
| |
| protected boolean setFunctionGroupIds(Set functionGroupIds) { |
| functionGroupIds = Util.safeCopy(functionGroupIds, String.class); |
| |
| if (!Util.equals(functionGroupIds, this.functionGroupIds)) { |
| this.functionGroupIds = functionGroupIds; |
| this.functionGroupIdsAsArray = (String[]) this.functionGroupIds.toArray(new String[this.functionGroupIds.size()]); |
| |
| hashCodeComputed = false; |
| hashCode = 0; |
| string = null; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| protected boolean setEnabled(boolean enabled) { |
| if (enabled != this.enabled) { |
| this.enabled = enabled; |
| hashCodeComputed = false; |
| hashCode = 0; |
| string = null; |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Recompute the enabled state and return whether the state changed |
| */ |
| protected boolean resetEnabled() { |
| return setEnabled(getNewEnabled()); |
| } |
| |
| protected boolean getNewEnabled() { |
| if (project == null) |
| return true; |
| if (functionGroupIdsAsArray.length == 0) |
| return true; |
| for (int i = 0; i < functionGroupIdsAsArray.length; i++) { |
| FunctionGroup group = FunctionGroupRegistry.getInstance().getGroupByID(functionGroupIdsAsArray[i]); |
| if (group != null && group.isEnabled(project)) |
| return true; |
| } |
| return false; |
| } |
| |
| public String toString() { |
| if (string == null) { |
| final StringBuffer stringBuffer = new StringBuffer(); |
| stringBuffer.append('['); |
| stringBuffer.append(functionGroupIds); |
| stringBuffer.append(','); |
| stringBuffer.append(enabled); |
| stringBuffer.append(','); |
| stringBuffer.append(id); |
| stringBuffer.append(']'); |
| string = stringBuffer.toString(); |
| } |
| |
| return string; |
| } |
| |
| /** |
| * The associated Project may be null |
| * |
| * @return Returns the project. |
| */ |
| public IProject getProject() { |
| return project; |
| } |
| |
| public String getPrimaryFunctionGroupId() { |
| int selectedPriority = Integer.MAX_VALUE; |
| int priority = 0; |
| String selectedFunctionGroupId = null; |
| String functionGroupId = null; |
| for (Iterator iterator = getFunctionGroupIds().iterator(); iterator.hasNext();) { |
| functionGroupId = iterator.next().toString(); |
| priority = FunctionGroupRegistry.getInstance().getGroupPriority(functionGroupId); |
| if (priority < selectedPriority) |
| selectedFunctionGroupId = functionGroupId; |
| if (priority == 0) |
| return selectedFunctionGroupId; |
| } |
| return selectedFunctionGroupId; |
| } |
| |
| } |