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/*******************************************************************************
* Copyright (c) 2000, 2003 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.internal.ui.synchronize.views;
import java.util.*;
import org.eclipse.core.resources.*;
import org.eclipse.jface.viewers.AbstractTreeViewer;
import org.eclipse.team.core.subscribers.ISyncInfoSetChangeEvent;
import org.eclipse.team.core.subscribers.SyncInfo;
import org.eclipse.team.internal.core.subscribers.SyncSetChangedEvent;
import org.eclipse.team.ui.synchronize.SyncInfoDiffNode;
import org.eclipse.team.ui.synchronize.views.*;
/**
* The contents provider compressed in-sync folder paths
*/
public class CompressedFolderContentProvider extends SyncInfoSetTreeContentProvider {
/* (non-Javadoc)
* @see org.eclipse.team.internal.ui.synchronize.views.SyncSetContentProvider#handleResourceChanges(org.eclipse.team.core.subscribers.ISyncInfoSetChangeEvent)
*/
protected void handleResourceChanges(ISyncInfoSetChangeEvent event) {
AbstractTreeViewer tree = getTreeViewer();
if (tree != null) {
SyncInfo[] infos = event.getChangedResources();
// Determine if any folders changed sync state
Set projectsToRefresh = new HashSet();
for (int i = 0; i < infos.length; i++) {
SyncInfo info = infos[i];
if (info.getLocal().getType() != IResource.FILE) {
// For folder sync changes, we refresh the whole project
// so that any compressed folders are adjusted properly
// (as rebalancing is tricky)
// TODO: Perhaps this could be optimized
projectsToRefresh.add(info.getLocal().getProject());
}
}
if (!projectsToRefresh.isEmpty()) {
// Exclude any resources whose project will be refreshed
// Create a new event
SyncSetChangedEvent remainingChanges = new SyncSetChangedEvent(event.getSet());
for (int i = 0; i < infos.length; i++) {
SyncInfo info = infos[i];
if (!projectsToRefresh.contains(info.getLocal().getProject())) {
remainingChanges.changed(info);
}
}
// Refresh the projects
for (Iterator iter = projectsToRefresh.iterator(); iter.hasNext();) {
IResource resource = (IResource) iter.next();
tree.refresh(getModelObject(resource), true);
}
event = remainingChanges;
}
}
super.handleResourceChanges(event);
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ui.sync.views.SyncSetContentProvider#handleResourceAdditions(org.eclipse.team.internal.ui.sync.views.SyncSetChangedEvent)
*/
protected void handleResourceAdditions(ISyncInfoSetChangeEvent event) {
AbstractTreeViewer tree = getTreeViewer();
if (tree != null) {
IResource[] roots = event.getAddedRoots();
for (int i = 0; i < roots.length; i++) {
IResource resource = roots[i];
if (resource.getType() == IResource.PROJECT) {
// Add the project
tree.add(getModelObject(resource.getParent()), getModelObject(resource));
updateParentLabels(resource);
} else {
// TODO: Refresh the resources project for now
// because trying to rebalance compressed folder may be tricky
// perhaps we could be smarter
tree.refresh(getModelObject(resource.getProject()), true);
}
}
} else {
super.handleResourceAdditions(event);
}
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ui.sync.views.SyncSetContentProvider#handleResourceRemovals(org.eclipse.team.internal.ui.sync.views.SyncSetChangedEvent)
*/
protected void handleResourceRemovals(ISyncInfoSetChangeEvent event) {
AbstractTreeViewer tree = getTreeViewer();
if (tree != null) {
IResource[] roots = event.getRemovedRoots();
IResource[] resources = event.getRemovedResources();
Set removals = new HashSet();
// First, deal with any projects that have been removed
List remainingRoots = new ArrayList();
for (int i = 0; i < roots.length; i++) {
IResource resource = roots[i];
if (resource.getType() == IResource.PROJECT) {
removals.add(getModelObject(resource));
} else {
remainingRoots.add(resource);
}
}
roots = (IResource[]) remainingRoots.toArray(new IResource[remainingRoots.size()]);
// Then determine the other model objects that must be removed
if (roots.length > 0) {
for (int i = 0; i < resources.length; i++) {
IResource resource = resources[i];
if (isChildOfRoot(resource, roots) || isCompressedParentEmpty(resource)) {
// A root of the resource has also been removed.
// However, the resource's model parent would be a
// compressed folder on the resource's parent folder.
removals.add(getModelObject(resource.getParent()));
updateParentLabels(resource);
} else {
// The resources parent still has children so just remove
// the resource's model object
removals.add(getModelObject(resource));
updateParentLabels(resource);
}
}
}
tree.remove(removals.toArray(new Object[removals.size()]));
} else {
super.handleResourceRemovals(event);
}
}
private boolean isCompressedParentEmpty(IResource resource) {
IContainer parent = resource.getParent();
if (parent == null
|| parent.getType() == IResource.ROOT
|| parent.getType() == IResource.PROJECT) {
return false;
}
// Check if the sync set has any file children of the parent
IResource[] members = getSyncInfoSet().members(parent);
for (int i = 0; i < members.length; i++) {
IResource member = members[i];
if (member.getType() == IResource.FILE) {
return false;
}
}
// The parent does not contain any files
return true;
}
private boolean isChildOfRoot(IResource resource, IResource[] roots) {
for (int i = 0; i < roots.length; i++) {
IResource root = roots[i];
if (!root.equals(resource)
&& root.getFullPath().isPrefixOf(resource.getFullPath())) {
return true;
}
}
return false;
}
public Object getParent(Object element) {
if (element instanceof CompressedFolder) {
// The parent of a compressed folder is always the project
return getModelObject(getResource(element).getProject());
}
Object parent = super.getParent(element);
if (parent instanceof SyncInfoDiffNode) {
SyncInfo info = ((SyncInfoDiffNode)parent).getSyncInfo();
if (info == null) {
// The resource is in-sync so return a compressed folder
IResource resource = ((SyncInfoDiffNode)parent).getResource();
if (resource.getType() == IResource.FOLDER) {
return new CompressedFolder(((SyncInfoDiffNode)parent).getSyncInfoSet(), resource);
}
}
}
return parent;
}
public Object[] getChildren(Object element) {
IResource resource = getResource(element);
if (resource != null) {
if (resource.getType() == IResource.PROJECT) {
return getProjectChildren((IProject)resource);
} else if (resource.getType() == IResource.FOLDER) {
return getFolderChildren(resource);
}
}
return super.getChildren(element);
}
private Object[] getFolderChildren(IResource resource) {
// Folders will only contain out-of-sync children
IResource[] children = getSyncInfoSet().members(resource);
List result = new ArrayList();
for (int i = 0; i < children.length; i++) {
IResource child = children[i];
SyncInfo info = getSyncInfoSet().getSyncInfo(child);
if (info != null) {
result.add(getModelObject(info.getLocal()));
}
}
return result.toArray(new Object[result.size()]);
}
private Object[] getProjectChildren(IProject project) {
SyncInfo[] outOfSync = getSyncInfoSet().getOutOfSyncDescendants(project);
Set result = new HashSet();
for (int i = 0; i < outOfSync.length; i++) {
SyncInfo info = outOfSync[i];
IResource local = info.getLocal();
if (local.getProjectRelativePath().segmentCount() == 1) {
// If the resource is a child of the project, include it uncompressed
result.add(getModelObject(local));
} else {
IContainer container = getLowestInSyncParent(local);
if (container.getType() == IResource.FOLDER) {
result.add(getModelObject(container));
}
}
}
return result.toArray(new Object[result.size()]);
}
/**
* Return a compressed folder if the provided resource is an in-sync folder.
* Warning: This method will return a compressed folder for any in-sync
* folder, even those that do not contain out-of-sync resources (i.e. those that
* are not visible in the view).
*/
public Object getModelObject(IResource resource) {
if (resource.getType() == IResource.FOLDER && getSyncInfoSet().getSyncInfo(resource) == null) {
return new CompressedFolder(getSyncInfoSet(), resource);
}
return super.getModelObject(resource);
}
private IContainer getLowestInSyncParent(IResource resource) {
if (resource.getType() == IResource.ROOT) return (IContainer)resource;
IContainer parent = resource.getParent();
if (getSyncInfoSet().getSyncInfo(parent) == null) {
return parent;
}
return getLowestInSyncParent(parent);
}
}
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