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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.ui.synchronize;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.resources.IResource;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.team.internal.ui.Utils;
import org.eclipse.ui.IMemento;
import org.eclipse.ui.IWorkingSet;
import org.eclipse.ui.IWorkingSetManager;
import org.eclipse.ui.PlatformUI;
/**
* A synchronize scope whose roots are defined by a working set.
* <p>
* Clients are not expected to subclass this class.
* @since 3.0
*/
public class WorkingSetScope extends AbstractSynchronizeScope implements IPropertyChangeListener {
/*
* Constants used to save and restore this scope
*/
/*
* Constants used to save and restore this scope
*/
private final static String CTX_SETS = "workingset_scope_sets"; //$NON-NLS-1$
private final static String CTX_SET_NAME = "workingset_scope_name"; //$NON-NLS-1$
private IWorkingSet[] sets;
/**
* Create the scope for the subscriber and working set
* @param subscriber the subscriber that defines this scope
* @param set the working set that defines this scope
*/
public WorkingSetScope(IWorkingSet[] sets) {
this.sets = sets;
PlatformUI.getWorkbench().getWorkingSetManager().addPropertyChangeListener(this);
}
/**
* Create this scope from it's previously saved state
* @param memento
*/
protected WorkingSetScope(IMemento memento) {
super(memento);
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ui.synchronize.ScopableSubscriberParticipant.SubscriberScope#getName()
*/
public String getName() {
if (sets.length == 0) {
return "Workspace";
}
StringBuffer name = new StringBuffer();
for (int i = 0; i < sets.length; i++) {
IWorkingSet set = sets[i];
name.append(set.getName());
if (i < sets.length - 1) {
name.append(", ");
}
}
return name.toString();
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ui.synchronize.ScopableSubscriberParticipant.SubscriberScope#getRoots()
*/
public IResource[] getRoots() {
if (sets.length == 0) {
return null;
}
HashSet roots = new HashSet();
for (int i = 0; i < sets.length; i++) {
IWorkingSet set = sets[i];
IResource[] resources = Utils.getResources(set.getElements());
addNonOverlapping(roots, resources);
}
return (IResource[]) roots.toArray(new IResource[roots.size()]);
}
private void addNonOverlapping(HashSet roots, IResource[] resources) {
for (int i = 0; i < resources.length; i++) {
IResource newResource = resources[i];
boolean add = true;
for (Iterator iter = roots.iterator(); iter.hasNext();) {
IResource existingResource = (IResource) iter.next();
if (existingResource.equals(newResource)) {
// No need to add it since it is already there
add = false;
break;
}
if (existingResource.getFullPath().isPrefixOf(newResource.getFullPath())) {
// No need to add it since a parent is already there
add = false;
break;
}
if (newResource.getFullPath().isPrefixOf(existingResource.getFullPath())) {
// Remove existing and continue
iter.remove();
}
}
if (add) {
roots.add(newResource);
}
}
}
/* (non-Javadoc)
* @see org.eclipse.jface.util.IPropertyChangeListener#propertyChange(org.eclipse.jface.util.PropertyChangeEvent)
*/
public void propertyChange(PropertyChangeEvent event) {
if (event.getProperty() == IWorkingSetManager.CHANGE_WORKING_SET_CONTENT_CHANGE) {
IWorkingSet newSet = (IWorkingSet)event.getNewValue();
for (int i = 0; i < sets.length; i++) {
IWorkingSet set = sets[i];
if (newSet == set) {
fireRootsChanges();
return;
}
}
}
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ui.synchronize.ScopableSubscriberParticipant.SubscriberScope#dispose()
*/
public void dispose() {
super.dispose();
PlatformUI.getWorkbench().getWorkingSetManager().removePropertyChangeListener(this);
}
/* (non-Javadoc)
* @see org.eclipse.team.ui.synchronize.AbstractSynchronizeScope#saveState(org.eclipse.ui.IMemento)
*/
public void saveState(IMemento memento) {
super.saveState(memento);
for (int i = 0; i < sets.length; i++) {
IWorkingSet set = sets[i];
IMemento rootNode = memento.createChild(CTX_SETS);
rootNode.putString(CTX_SET_NAME, set.getName());
}
}
/* (non-Javadoc)
* @see org.eclipse.team.ui.synchronize.AbstractSynchronizeScope#init(org.eclipse.ui.IMemento)
*/
protected void init(IMemento memento) {
super.init(memento);
IMemento[] rootNodes = memento.getChildren(CTX_SETS);
if(rootNodes != null) {
List sets = new ArrayList();
for (int i = 0; i < rootNodes.length; i++) {
IMemento rootNode = rootNodes[i];
String setName = rootNode.getString(CTX_SET_NAME);
IWorkingSet set = PlatformUI.getWorkbench().getWorkingSetManager().getWorkingSet(setName);
if (set != null) {
sets.add(set);
}
}
this.sets = (IWorkingSet[]) sets.toArray(new IWorkingSet[sets.size()]);
}
}
}
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