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/*******************************************************************************
* Copyright (C) 2007, Dave Watson <dwatson@mimvista.com>
* Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com>
* Copyright (C) 2006, Shawn O. Pearce <spearce@spearce.org>
*
* 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
*******************************************************************************/
package org.eclipse.egit.ui.internal.actions;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.egit.core.project.RepositoryMapping;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.team.internal.ui.actions.TeamAction;
import org.eclipse.jgit.lib.Repository;
/**
* A helper class for Team Actions on Git controlled projects
*/
public abstract class RepositoryAction extends TeamAction {
// There are changes in Eclipse 3.3 requiring that execute be implemented
// for it to compile. while 3.2 requires that run is implemented instead.
/*
* See {@link #run(IAction)}
*
* @param action
*/
public void execute(IAction action) {
run(action);
}
/**
* @return the projects hosting the selected resources
*/
protected IProject[] getProjectsForSelectedResources() {
Set<IProject> ret = new HashSet<IProject>();
for (IResource resource : (IResource[])getSelectedAdaptables(getSelection(), IResource.class))
ret.add(resource.getProject());
return ret.toArray(new IProject[ret.size()]);
}
/**
* @param projects
* a list of projects
* @return the repositories that projects map to iff all projects are mapped
*/
protected Repository[] getRepositoriesFor(final IProject[] projects) {
Set<Repository> ret = new HashSet<Repository>();
for (IProject project : projects) {
RepositoryMapping repositoryMapping = RepositoryMapping.getMapping(project);
if (repositoryMapping == null)
return new Repository[0];
ret.add(repositoryMapping.getRepository());
}
return ret.toArray(new Repository[ret.size()]);
}
/**
* List the projects with selected resources, if all projects are connected
* to a Git repository.
*
* @return the tracked projects affected by the current resource selection
*/
public IProject[] getProjectsInRepositoryOfSelectedResources() {
Set<IProject> ret = new HashSet<IProject>();
Repository[] repositories = getRepositoriesFor(getProjectsForSelectedResources());
final IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
for (IProject project : projects) {
RepositoryMapping mapping = RepositoryMapping.getMapping(project);
for (Repository repository : repositories) {
if (mapping != null && mapping.getRepository() == repository) {
ret.add(project);
break;
}
}
}
return ret.toArray(new IProject[ret.size()]);
}
/**
* Figure out which repository to use. All selected
* resources must map to the same Git repository.
*
* @param warn Put up a message dialog to warn why a resource was not selected
* @return repository for current project, or null
*/
protected Repository getRepository(boolean warn) {
RepositoryMapping mapping = null;
for (IProject project : getSelectedProjects()) {
RepositoryMapping repositoryMapping = RepositoryMapping.getMapping(project);
if (mapping == null)
mapping = repositoryMapping;
if (repositoryMapping == null)
return null;
if (mapping.getRepository() != repositoryMapping.getRepository()) {
if (warn)
MessageDialog.openError(getShell(), "Multiple Repositories Selection", "Cannot perform reset on multiple repositories simultaneously.\n\nPlease select items from only one repository.");
return null;
}
}
if (mapping == null) {
if (warn)
MessageDialog.openError(getShell(), "Cannot Find Repository", "Could not find a repository associated with this project");
return null;
}
final Repository repository = mapping.getRepository();
return repository;
}
/**
* Figure out which repositories to use. All selected
* resources must map to a Git repository.
*
* @return repository for current project, or null
*/
protected Repository[] getRepositories() {
IProject[] selectedProjects = getSelectedProjects();
Set<Repository> repos = new HashSet<Repository>(selectedProjects.length);
for (IProject project : selectedProjects) {
RepositoryMapping repositoryMapping = RepositoryMapping.getMapping(project);
if (repositoryMapping == null)
return new Repository[0];
repos.add(repositoryMapping.getRepository());
}
return repos.toArray(new Repository[repos.size()]);
}
// Re-make isEnabled abstract
@Override
abstract public boolean isEnabled();
}
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