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/*******************************************************************************
* Copyright (c) 2000, 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
*******************************************************************************/
package org.eclipse.team.internal.ccvs.ui.tags;
import java.util.*;
import org.eclipse.core.internal.resources.mapping.ResourceMapping;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.*;
import org.eclipse.jface.util.ListenerList;
import org.eclipse.team.core.TeamException;
import org.eclipse.team.internal.ccvs.core.*;
import org.eclipse.team.internal.ccvs.core.resources.CVSWorkspaceRoot;
/**
* A tag source provides access to a set of tags.
*/
public abstract class TagSource {
/*
* Special constant representing the BASE tag
*/
public static final int BASE = -1;
public static final TagSource EMPTY = new TagSource() {
public void commit(CVSTag[] tags, boolean replace, IProgressMonitor monitor) throws CVSException {
// No-op
}
public ICVSRepositoryLocation getLocation() {
// TODO Auto-generated method stub
return null;
}
public String getShortDescription() {
return "Empty"; //$NON-NLS-1$
}
public CVSTag[] getTags(int type) {
return new CVSTag[0];
}
public CVSTag[] refresh(boolean bestEffort, IProgressMonitor monitor) throws TeamException {
return new CVSTag[0];
}
public ICVSResource[] getCVSResources() {
return new ICVSResource[0];
}
};
private ListenerList listeners = new ListenerList();
/**
* Simple interface for providing notification when the tags
* for this source have changed.
*/
public interface ITagSourceChangeListener {
void tagsChanged(TagSource source);
}
public static int[] convertIncludeFlaqsToTagTypes(int includeFlags) {
List types = new ArrayList();
if ((includeFlags & TagSelectionArea.INCLUDE_BRANCHES) > 0)
types.add(new Integer(CVSTag.BRANCH));
if ((includeFlags & TagSelectionArea.INCLUDE_VERSIONS) > 0)
types.add(new Integer(CVSTag.VERSION));
if ((includeFlags & (TagSelectionArea.INCLUDE_HEAD_TAG)) > 0)
types.add(new Integer(CVSTag.HEAD));
if ((includeFlags & (TagSelectionArea.INCLUDE_DATES)) > 0)
types.add(new Integer(CVSTag.DATE));
if ((includeFlags & (TagSelectionArea.INCLUDE_BASE_TAG)) > 0)
types.add(new Integer(BASE));
int[] result = new int[types.size()];
for (int i = 0; i < result.length; i++) {
result[i] = ((Integer)types.get(i)).intValue();
}
return result;
}
/**
* Create a tag source for the given folders
* @param folders one or more folders
* @return a tag source for the supplied folders
*/
public static TagSource create(ICVSFolder[] folders) {
if (folders.length == 1) {
return new SingleFolderTagSource(folders[0]);
} else {
return new MultiFolderTagSource(folders);
}
}
/**
* Create a tag source for a list of resources
* @param resources one or more resources
* @return a tag source
*/
public static TagSource create(ICVSResource[] resources) {
if (resources.length == 1 && !resources[0].isFolder())
return new SingleFileTagSource((ICVSFile)resources[0]);
return create(getFolders(resources));
}
private static ICVSFolder[] getFolders(ICVSResource[] resources) {
return new ICVSFolder[] { getFirstFolder(resources) } ;
}
/**
* Create a tag source for a list of resources
* @param resources one or more resources
* @return a tag source
*/
public static TagSource create(IResource[] resources) {
return create(getCVSResources(getProjects(resources)));
}
/**
* Create a tag source for the given mappers.
* @param mappers the mappers
* @return a tag source
*/
public static TagSource create(ResourceMapping[] mappers) {
return create(getCVSResources(getProjects(mappers)));
}
private static IResource[] getProjects(ResourceMapping[] mappers) {
Set projects = new HashSet();
for (int i = 0; i < mappers.length; i++) {
ResourceMapping mapper = mappers[i];
projects.addAll(Arrays.asList(mapper.getProjects()));
}
return (IResource[]) projects.toArray(new IResource[projects.size()]);
}
private static IResource[] getProjects(IResource[] resources) {
Set result = new HashSet();
for (int i = 0; i < resources.length; i++) {
IResource resource = resources[i];
result.add(resource.getProject());
}
return (IResource[]) result.toArray(new IResource[result.size()]);
}
/**
* Return a tag source for a single remote folder
* @param remote the remote folder
* @return a tag source for that folder
*/
public static TagSource create(ICVSRemoteFolder remote) {
return new SingleFolderTagSource(remote);
}
private static ICVSResource[] getCVSResources(IResource[] resources) {
List cvsResources = new ArrayList();
for (int i = 0; i < resources.length; i++) {
IResource resource = resources[i];
cvsResources.add(CVSWorkspaceRoot.getCVSResourceFor(resource));
}
return (ICVSResource[]) cvsResources.toArray(new ICVSResource[cvsResources.size()]);
}
private static ICVSFolder getFirstFolder(ICVSResource[] resources) {
if (resources[0].isFolder()) {
return (ICVSFolder)resources[0];
} else {
return resources[0].getParent();
}
}
public CVSTag[] getTags(int type) {
switch (type) {
case BASE:
return new CVSTag[] { CVSTag.BASE };
case CVSTag.HEAD:
return new CVSTag[] { CVSTag.DEFAULT };
}
return new CVSTag[0];
}
public CVSTag[] getTags(int[] types) {
if (types.length == 0) {
return new CVSTag[0];
}
if (types.length == 1) {
return getTags(types[0]);
}
List result = new ArrayList();
for (int i = 0; i < types.length; i++) {
int type = types[i];
CVSTag[] tags = getTags(type);
result.addAll(Arrays.asList(tags));
}
return (CVSTag[]) result.toArray(new CVSTag[result.size()]);
}
/**
* Refresh the tags by contacting the server if appropriate
* @param monitor a progress monitor
* @param bestEffort if best effort is true, then the whole folder contents may be searched
* @return any discovered tags
*/
public abstract CVSTag[] refresh(boolean bestEffort, IProgressMonitor monitor) throws TeamException;
public abstract ICVSRepositoryLocation getLocation();
/**
* Return a short description of the tag source for displaying in UI.
* @return a short description of the tag source for displaying in UI.
*/
public abstract String getShortDescription();
/**
* Commit a set of tag changes to the tag cache
* @param tags the tags that should be cached
* @param replace whether existing tags not in the list should be removed
* @param monitor a progress monitor
* @throws CVSException
*/
public abstract void commit(CVSTag[] tags, boolean replace, IProgressMonitor monitor) throws CVSException;
public void addListener(ITagSourceChangeListener listener) {
listeners.add(listener);
}
public void removeListener(ITagSourceChangeListener listener) {
listeners.remove(listener);
}
/**
* Notify all listeners that the tags from this source may have changed
*/
public void fireChange() {
Object[] list = listeners.getListeners();
for (int i = 0; i < list.length; i++) {
final ITagSourceChangeListener listener = (ITagSourceChangeListener)list[i];
Platform.run(new ISafeRunnable() {
public void handleException(Throwable exception) {
// logged by run
}
public void run() throws Exception {
listener.tagsChanged(TagSource.this);
}
});
}
}
public abstract ICVSResource[] getCVSResources();
}
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