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/*******************************************************************************
* Copyright (C) 2007, Robin Rosenberg <robin.rosenberg@dewire.com>
* Copyright (C) 2008, 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;
import java.net.Authenticator;
import java.net.ProxySelector;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.core.net.proxy.IProxyService;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.egit.core.project.RepositoryMapping;
import org.eclipse.egit.ui.internal.trace.GitTraceLocation;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.jgit.lib.IndexChangedEvent;
import org.eclipse.jgit.lib.RefsChangedEvent;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryListener;
import org.eclipse.jgit.transport.SshSessionFactory;
import org.eclipse.jsch.core.IJSchService;
import org.eclipse.osgi.service.debug.DebugOptions;
import org.eclipse.swt.graphics.Font;
import org.eclipse.ui.plugin.AbstractUIPlugin;
import org.eclipse.ui.statushandlers.StatusManager;
import org.eclipse.ui.themes.ITheme;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.util.tracker.ServiceTracker;
/**
* This is a plugin singleton mostly controlling logging.
*/
public class Activator extends AbstractUIPlugin {
/**
* The one and only instance
*/
private static Activator plugin;
/**
* Property listeners for plugin specific events
*/
private static List<IPropertyChangeListener> propertyChangeListeners =
new ArrayList<IPropertyChangeListener>(5);
/**
* Property constant indicating the decorator configuration has changed.
*/
public static final String DECORATORS_CHANGED = "org.eclipse.egit.ui.DECORATORS_CHANGED"; //$NON-NLS-1$
/**
* @return the {@link Activator} singleton.
*/
public static Activator getDefault() {
return plugin;
}
/**
* @return the id of the egit ui plugin
*/
public static String getPluginId() {
return getDefault().getBundle().getSymbolicName();
}
/**
* Handle an error. The error is logged. If <code>show</code> is
* <code>true</code> the error is shown to the user.
*
* @param message a localized message
* @param throwable
* @param show
*/
public static void handleError(String message, Throwable throwable,
boolean show) {
IStatus status = new Status(IStatus.ERROR, getPluginId(), message,
throwable);
int style = StatusManager.LOG;
if (show)
style |= StatusManager.SHOW;
StatusManager.getManager().handle(status, style);
}
/**
* Get the theme used by this plugin.
*
* @return our theme.
*/
public static ITheme getTheme() {
return plugin.getWorkbench().getThemeManager().getCurrentTheme();
}
/**
* Get a font known to this plugin.
*
* @param id
* one of our THEME_* font preference ids (see
* {@link UIPreferences});
* @return the configured font, borrowed from the registry.
*/
public static Font getFont(final String id) {
return getTheme().getFontRegistry().get(id);
}
/**
* Get a font known to this plugin, but with bold style applied over top.
*
* @param id
* one of our THEME_* font preference ids (see
* {@link UIPreferences});
* @return the configured font, borrowed from the registry.
*/
public static Font getBoldFont(final String id) {
return getTheme().getFontRegistry().getBold(id);
}
private RCS rcs;
private RIRefresh refreshJob;
/**
* Constructor for the egit ui plugin singleton
*/
public Activator() {
plugin = this;
}
public void start(final BundleContext context) throws Exception {
super.start(context);
if (isDebugging()) {
ServiceTracker debugTracker = new ServiceTracker(context,
DebugOptions.class.getName(), null);
debugTracker.open();
DebugOptions opts = (DebugOptions) debugTracker.getService();
GitTraceLocation.initializeFromOptions(opts, true);
}
setupSSH(context);
setupProxy(context);
setupRepoChangeScanner();
setupRepoIndexRefresh();
}
private void setupRepoIndexRefresh() {
refreshJob = new RIRefresh();
Repository.addAnyRepositoryChangedListener(refreshJob);
}
/**
* Register for changes made to Team properties.
*
* @param listener
* The listener to register
*/
public static synchronized void addPropertyChangeListener(
IPropertyChangeListener listener) {
propertyChangeListeners.add(listener);
}
/**
* Remove a Team property changes.
*
* @param listener
* The listener to remove
*/
public static synchronized void removePropertyChangeListener(
IPropertyChangeListener listener) {
propertyChangeListeners.remove(listener);
}
/**
* Broadcast a Team property change.
*
* @param event
* The event to broadcast
*/
public static synchronized void broadcastPropertyChange(PropertyChangeEvent event) {
for (IPropertyChangeListener listener : propertyChangeListeners)
listener.propertyChange(event);
}
static class RIRefresh extends Job implements RepositoryListener {
RIRefresh() {
super(UIText.Activator_refreshJobName);
}
private Set<IProject> projectsToScan = new LinkedHashSet<IProject>();
@Override
protected IStatus run(IProgressMonitor monitor) {
IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
monitor.beginTask(UIText.Activator_refreshingProjects, projects.length);
while (projectsToScan.size() > 0) {
IProject p;
synchronized (projectsToScan) {
if (projectsToScan.size() == 0)
break;
Iterator<IProject> i = projectsToScan.iterator();
p = i.next();
i.remove();
}
ISchedulingRule rule = p.getWorkspace().getRuleFactory().refreshRule(p);
try {
getJobManager().beginRule(rule, monitor);
p.refreshLocal(IResource.DEPTH_INFINITE, new SubProgressMonitor(monitor, 1));
} catch (CoreException e) {
handleError(UIText.Activator_refreshFailed, e, false);
return new Status(IStatus.ERROR, getPluginId(), e.getMessage());
} finally {
getJobManager().endRule(rule);
}
}
monitor.done();
return Status.OK_STATUS;
}
public void indexChanged(IndexChangedEvent e) {
// Check the workspace setting "refresh automatically" setting first
if (!ResourcesPlugin.getPlugin().getPluginPreferences().getBoolean(
ResourcesPlugin.PREF_AUTO_REFRESH))
return;
IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
Set<IProject> toRefresh= new HashSet<IProject>();
for (IProject p : projects) {
RepositoryMapping mapping = RepositoryMapping.getMapping(p);
if (mapping != null && mapping.getRepository() == e.getRepository()) {
toRefresh.add(p);
}
}
synchronized (projectsToScan) {
projectsToScan.addAll(toRefresh);
}
if (projectsToScan.size() > 0)
schedule();
}
public void refsChanged(RefsChangedEvent e) {
// Do not react here
}
}
static class RCS extends Job {
RCS() {
super(UIText.Activator_repoScanJobName);
}
// FIXME, need to be more intelligent about this to avoid too much work
private static final long REPO_SCAN_INTERVAL = 10000L;
// volatile in order to ensure thread synchronization
private volatile boolean doReschedule = true;
void setReschedule(boolean reschedule){
doReschedule = reschedule;
}
@Override
protected IStatus run(IProgressMonitor monitor) {
try {
// A repository can contain many projects, only scan once
// (a project could in theory be distributed among many
// repositories. We discard that as being ugly and stupid for
// the moment.
IProject[] projects = ResourcesPlugin.getWorkspace().getRoot().getProjects();
monitor.beginTask(UIText.Activator_scanningRepositories, projects.length);
Set<Repository> scanned = new HashSet<Repository>();
for (IProject p : projects) {
RepositoryMapping mapping = RepositoryMapping.getMapping(p);
if (mapping != null) {
Repository r = mapping.getRepository();
if (!scanned.contains(r)) {
if (monitor.isCanceled())
break;
// TODO is this the right location?
if (GitTraceLocation.UI.isActive())
GitTraceLocation.getTrace().trace(
GitTraceLocation.UI.getLocation(),
"Scanning " + r + " for changes"); //$NON-NLS-1$ //$NON-NLS-2$
scanned.add(r);
ISchedulingRule rule = p.getWorkspace().getRuleFactory().modifyRule(p);
getJobManager().beginRule(rule, monitor);
try {
r.scanForRepoChanges();
} finally {
getJobManager().endRule(rule);
}
}
}
monitor.worked(1);
}
monitor.done();
// TODO is this the right location?
if (GitTraceLocation.UI.isActive())
GitTraceLocation.getTrace().trace(
GitTraceLocation.UI.getLocation(),
"Rescheduling " + getName() + " job"); //$NON-NLS-1$ //$NON-NLS-2$
if (doReschedule)
schedule(REPO_SCAN_INTERVAL);
} catch (Exception e) {
// TODO is this the right location?
if (GitTraceLocation.UI.isActive())
GitTraceLocation.getTrace().trace(
GitTraceLocation.UI.getLocation(),
"Stopped rescheduling " + getName() + "job"); //$NON-NLS-1$ //$NON-NLS-2$
return new Status(
IStatus.ERROR,
getPluginId(),
0,
UIText.Activator_scanError,
e);
}
return Status.OK_STATUS;
}
}
private void setupRepoChangeScanner() {
rcs = new RCS();
rcs.setSystem(true);
rcs.schedule(RCS.REPO_SCAN_INTERVAL);
}
private void setupSSH(final BundleContext context) {
final ServiceReference ssh;
ssh = context.getServiceReference(IJSchService.class.getName());
if (ssh != null) {
SshSessionFactory.setInstance(new EclipseSshSessionFactory(
(IJSchService) context.getService(ssh)));
}
}
private void setupProxy(final BundleContext context) {
final ServiceReference proxy;
proxy = context.getServiceReference(IProxyService.class.getName());
if (proxy != null) {
ProxySelector.setDefault(new EclipseProxySelector(
(IProxyService) context.getService(proxy)));
Authenticator.setDefault(new EclipseAuthenticator(
(IProxyService) context.getService(proxy)));
}
}
public void stop(final BundleContext context) throws Exception {
if (GitTraceLocation.UI.isActive())
GitTraceLocation.getTrace().trace(
GitTraceLocation.UI.getLocation(),
"Trying to cancel " + rcs.getName() + " job"); //$NON-NLS-1$ //$NON-NLS-2$
rcs.setReschedule(false);
rcs.cancel();
if (GitTraceLocation.UI.isActive())
GitTraceLocation.getTrace().trace(
GitTraceLocation.UI.getLocation(),
"Trying to cancel " + refreshJob.getName() + " job"); //$NON-NLS-1$ //$NON-NLS-2$
refreshJob.cancel();
rcs.join();
refreshJob.join();
if (GitTraceLocation.UI.isActive())
GitTraceLocation.getTrace().trace(
GitTraceLocation.UI.getLocation(), "Jobs terminated"); //$NON-NLS-1$
super.stop(context);
plugin = null;
}
/**
* @param message
* @param e
*/
public static void logError(String message, Throwable e) {
handleError(message, e, false);
}
/**
* @param message
* @param e
*/
public static void error(String message, Throwable e) {
handleError(message, e, false);
}
}
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