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/*******************************************************************************
* Copyright (c) 2003, 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.internal.ui;
import java.util.*;
import org.eclipse.core.resources.*;
import org.eclipse.core.runtime.*;
import org.eclipse.team.core.RepositoryProvider;
import org.eclipse.team.internal.core.TeamPlugin;
import org.eclipse.ui.IPluginContribution;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.activities.*;
/**
* Utility class that manages promotion of team capabilities in response to workspace changes
* and existing repository providers.
*
* @since 3.0
*/
public class TeamCapabilityHelper {
/**
* Mapping from repository provider id to IPluginContribution. Used for proper
* activity mapping of natures.
*/
private Map providerIdToPluginId;
/**
* Singleton instance.
*/
private static TeamCapabilityHelper singleton;
/*
* This is copied from RepositoryProviderType to provide a quick way to query if
* a project is mapped to a provider id.
*/
private final static QualifiedName PROVIDER_PROP_KEY =
new QualifiedName("org.eclipse.team.core", "repository"); //$NON-NLS-1$ //$NON-NLS-2$
/**
* Get the singleton instance of this class.
* @return the singleton instance of this class.
* @since 3.0
*/
public static TeamCapabilityHelper getInstance() {
if (singleton == null) {
singleton = new TeamCapabilityHelper();
}
return singleton;
}
/**
* Create a new <code>IDEWorkbenchActivityHelper</code> which will listen
* for workspace changes and promote activities accordingly.
*/
private TeamCapabilityHelper() {
providerIdToPluginId = new HashMap();
loadRepositoryProviderIds();
// crawl the initial projects
IProject [] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
IWorkbenchActivitySupport workbenchActivitySupport = PlatformUI.getWorkbench().getActivitySupport();
for (int i = 0; i < projects.length; i++) {
try {
processProject(projects[i], workbenchActivitySupport);
} catch (CoreException e) {
// do nothing
}
}
}
/**
* Loads the list of registered provider types
*/
public void loadRepositoryProviderIds() {
providerIdToPluginId.clear();
IExtensionPoint point = Platform.getExtensionRegistry().getExtensionPoint("org.eclipse.team.core.repository"); //$NON-NLS-1$
if (point != null) {
IExtension[] extensions = point.getExtensions();
for (int i = 0; i < extensions.length; i++) {
IExtension extension = extensions[i];
IConfigurationElement[] elements = extension.getConfigurationElements();
for (int j = 0; j < elements.length; j++) {
IConfigurationElement element = elements[j];
final String pluginId = extension.getDeclaringPluginDescriptor().getUniqueIdentifier();
if (element.getName().equals(TeamPlugin.REPOSITORY_EXTENSION)) {
final String id = element.getAttribute("id"); //$NON-NLS-1$
if (id == null) {
// bad extension point
continue;
}
providerIdToPluginId.put(id, new IPluginContribution() {
public String getLocalId() {
return id;
}
public String getPluginId() {
return pluginId;
}
});
}
}
}
}
}
/**
* Handle natures for the given project.
*
* @param project the project
* @param workbenchActivitySupport the activity support
*/
protected void processProject(IProject project, IWorkbenchActivitySupport workbenchActivitySupport) throws CoreException {
if (!project.isOpen())
return;
IActivityManager activityManager = workbenchActivitySupport
.getActivityManager();
String id = getProviderIdFor(project);
if (id == null)
return;
Set activities = new HashSet(activityManager.getEnabledActivityIds());
boolean changed = false;
IPluginContribution contribution = (IPluginContribution) providerIdToPluginId.get(id);
if (contribution == null)
return; //bad provider ID.
IIdentifier identifier = activityManager.getIdentifier(WorkbenchActivityHelper.createUnifiedId(contribution));
if (activities.addAll(identifier.getActivityIds())) {
changed = true;
}
if (changed)
workbenchActivitySupport.setEnabledActivityIds(activities);
}
/**
* Returns the provider id for this project or <code>null</code> if no providers are mapped
* to this project. Note that this won't instantiate the provider, but instead will simply query
* the persistent property
*
* @param project the project to query.
* @return the provider id for this project or <code>null</code> if no providers are mapped
* to this project
* @throws CoreException
*/
public String getProviderIdFor(IProject project) throws CoreException {
String id = null;
if(project.isAccessible()) {
//First, look for the session property
RepositoryProvider provider = (RepositoryProvider)project.getSessionProperty(PROVIDER_PROP_KEY);
if(provider != null)
id = provider.getID();
//Next, check if it has the ID as a persistent property
id = project.getPersistentProperty(PROVIDER_PROP_KEY);
}
return id;
}
}
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