| /******************************************************************************* |
| * Copyright (c) 2004, 2015 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 - Initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.internal.refresh; |
| |
| import org.eclipse.core.internal.resources.IManager; |
| import org.eclipse.core.internal.utils.Messages; |
| import org.eclipse.core.resources.*; |
| import org.eclipse.core.resources.refresh.IRefreshMonitor; |
| import org.eclipse.core.resources.refresh.IRefreshResult; |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.core.runtime.Preferences.PropertyChangeEvent; |
| |
| /** |
| * Manages auto-refresh functionality, including maintaining the active |
| * set of monitors and controlling the job that performs periodic refreshes |
| * on out of sync resources. |
| * |
| * @since 3.0 |
| */ |
| public class RefreshManager implements IRefreshResult, IManager, Preferences.IPropertyChangeListener { |
| public static final String DEBUG_PREFIX = "Auto-refresh: "; //$NON-NLS-1$ |
| MonitorManager monitors; |
| private RefreshJob refreshJob; |
| |
| /** |
| * The workspace. |
| */ |
| private IWorkspace workspace; |
| |
| public RefreshManager(IWorkspace workspace) { |
| this.workspace = workspace; |
| } |
| |
| /* |
| * Starts or stops auto-refresh depending on the auto-refresh preference. |
| */ |
| protected void manageAutoRefresh(boolean enabled, IProgressMonitor progressMonitor) { |
| //do nothing if we have already shutdown |
| if (refreshJob == null) { |
| return; |
| } |
| SubMonitor subMonitor = SubMonitor.convert(progressMonitor, 1); |
| if (enabled) { |
| refreshJob.start(); |
| monitors.start(subMonitor.split(1)); |
| } else { |
| refreshJob.stop(); |
| monitors.stop(); |
| } |
| } |
| |
| @Override |
| public void monitorFailed(IRefreshMonitor monitor, IResource resource) { |
| monitors.monitorFailed(monitor, resource); |
| } |
| |
| /** |
| * Checks for changes to the PREF_AUTO_UPDATE property. |
| * @see org.eclipse.core.runtime.Preferences.IPropertyChangeListener#propertyChange(Preferences.PropertyChangeEvent) |
| */ |
| @Deprecated |
| @Override |
| public void propertyChange(PropertyChangeEvent event) { |
| String property = event.getProperty(); |
| if (ResourcesPlugin.PREF_AUTO_REFRESH.equals(property)) { |
| Preferences preferences = ResourcesPlugin.getPlugin().getPluginPreferences(); |
| final boolean autoRefresh = preferences.getBoolean(ResourcesPlugin.PREF_AUTO_REFRESH); |
| String jobName = autoRefresh ? Messages.refresh_installMonitorsOnWorkspace : Messages.refresh_uninstallMonitorsOnWorkspace; |
| MonitorJob.createSystem(jobName, ResourcesPlugin.getWorkspace().getRoot(), (ICoreRunnable) monitor -> manageAutoRefresh(autoRefresh, monitor)).schedule(); |
| } |
| } |
| |
| @Override |
| public void refresh(IResource resource) { |
| //do nothing if we have already shutdown |
| if (refreshJob != null) |
| refreshJob.refresh(resource); |
| } |
| |
| /** |
| * Shuts down the refresh manager. This only happens when |
| * the resources plugin is going away. |
| */ |
| @Override |
| public void shutdown(IProgressMonitor monitor) { |
| ResourcesPlugin.getPlugin().getPluginPreferences().removePropertyChangeListener(this); |
| if (monitors != null) { |
| monitors.stop(); |
| monitors = null; |
| } |
| if (refreshJob != null) { |
| refreshJob.stop(); |
| refreshJob = null; |
| } |
| } |
| |
| /** |
| * Initializes the refresh manager. This does a minimal amount of work |
| * if auto-refresh is turned off. |
| */ |
| @Override |
| public void startup(IProgressMonitor monitor) { |
| SubMonitor subMonitor = SubMonitor.convert(monitor, 1); |
| Preferences preferences = ResourcesPlugin.getPlugin().getPluginPreferences(); |
| preferences.addPropertyChangeListener(this); |
| |
| refreshJob = new RefreshJob(); |
| monitors = new MonitorManager(workspace, this); |
| boolean autoRefresh = preferences.getBoolean(ResourcesPlugin.PREF_AUTO_REFRESH); |
| if (autoRefresh) |
| manageAutoRefresh(autoRefresh, subMonitor.split(1)); |
| } |
| } |