/*******************************************************************************
 * Copyright (c) 2003, 2006 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.ui.internal.ide;

import java.lang.reflect.InvocationTargetException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Map;
import java.util.TreeMap;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.resources.WorkspaceJob;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IBundleGroup;
import org.eclipse.core.runtime.IBundleGroupProvider;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.PluginVersionIdentifier;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.dialogs.IDialogSettings;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.dialogs.TrayDialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.ImageRegistry;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.application.IWorkbenchConfigurer;
import org.eclipse.ui.application.IWorkbenchWindowConfigurer;
import org.eclipse.ui.application.WorkbenchAdvisor;
import org.eclipse.ui.application.WorkbenchWindowAdvisor;
import org.eclipse.ui.ide.IDE;
import org.eclipse.ui.internal.ISelectionConversionService;
import org.eclipse.ui.internal.Workbench;
import org.eclipse.ui.internal.ide.model.WorkbenchAdapterBuilder;
import org.eclipse.ui.internal.progress.ProgressMonitorJobsDialog;
import org.eclipse.ui.progress.IProgressService;
import org.eclipse.update.core.SiteManager;
import org.osgi.framework.Bundle;

/**
 * IDE-specified workbench advisor which configures the workbench for use as an
 * IDE.
 * <p>
 * Note: This class replaces <code>org.eclipse.ui.internal.Workbench</code>.
 * </p>
 * 
 * @since 3.0
 */
public class IDEWorkbenchAdvisor extends WorkbenchAdvisor {

	private static final String WORKBENCH_PREFERENCE_CATEGORY_ID = "org.eclipse.ui.preferencePages.Workbench"; //$NON-NLS-1$

	/**
	 * The dialog setting key to access the known installed features since the
	 * last time the workbench was run.
	 */
	private static final String INSTALLED_FEATURES = "installedFeatures"; //$NON-NLS-1$

	private static IDEWorkbenchAdvisor workbenchAdvisor = null;

	/**
	 * Event loop exception handler for the advisor.
	 */
	private IDEExceptionHandler exceptionHandler = null;

	/**
	 * Contains the workspace location if the -showlocation command line
	 * argument is specified, or <code>null</code> if not specified.
	 */
	private String workspaceLocation = null;

	/**
	 * Ordered map of versioned feature ids -> info that are new for this
	 * session; <code>null</code> if uninitialized. Key type:
	 * <code>String</code>, Value type: <code>AboutInfo</code>.
	 */
	private Map newlyAddedBundleGroups;

	/**
	 * Array of <code>AboutInfo</code> for all new installed features that
	 * specify a welcome perspective.
	 */
	private AboutInfo[] welcomePerspectiveInfos = null;

	/**
	 * Helper for managing activites in response to workspace changes.
	 */
	private IDEWorkbenchActivityHelper activityHelper = null;

	/**
	 * Helper for managing work that is performed when the system is otherwise
	 * idle.
	 */
	private IDEIdleHelper idleHelper;

	private Listener settingsChangeListener;

	/**
	 * Creates a new workbench advisor instance.
	 */
	public IDEWorkbenchAdvisor() {
		super();
		if (workbenchAdvisor != null) {
			throw new IllegalStateException();
		}
		workbenchAdvisor = this;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#initialize
	 */
	public void initialize(IWorkbenchConfigurer configurer) {

		// make sure we always save and restore workspace state
		configurer.setSaveAndRestore(true);

		// setup the event loop exception handler
		exceptionHandler = new IDEExceptionHandler(configurer);

		// register workspace adapters
		WorkbenchAdapterBuilder.registerAdapters();

		// get the command line arguments
		String[] cmdLineArgs = Platform.getCommandLineArgs();

		// include the workspace location in the title
		// if the command line option -showlocation is specified
		for (int i = 0; i < cmdLineArgs.length; i++) {
			if ("-showlocation".equalsIgnoreCase(cmdLineArgs[i])) { //$NON-NLS-1$
				String name = null;
				if (cmdLineArgs.length > i + 1) {
					name = cmdLineArgs[i + 1];
				}
				if (name != null && name.indexOf("-") == -1) { //$NON-NLS-1$
					workspaceLocation = name;
				} else {
					workspaceLocation = Platform.getLocation().toOSString();
				}
				break;
			}
		}

		// register shared images
		declareWorkbenchImages();

		// initialize the activity helper
		activityHelper = IDEWorkbenchActivityHelper.getInstance();

		// initialize idle handler
		idleHelper = new IDEIdleHelper(configurer);

		// show Help button in JFace dialogs
		TrayDialog.setDialogHelpAvailable(true);

		// use this image for the help button in dialogs
		ImageRegistry reg = JFaceResources.getImageRegistry();
		reg
				.put(
						Dialog.DLG_IMG_HELP,
						IDEInternalWorkbenchImages
								.getImageDescriptor(IDEInternalWorkbenchImages.IMG_LCL_LINKTO_HELP));
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#preStartup()
	 */
	public void preStartup() {

		// Suspend background jobs while we startup
		Platform.getJobManager().suspend();

		// Register the build actions
		IProgressService service = PlatformUI.getWorkbench()
				.getProgressService();
		ImageDescriptor newImage = IDEInternalWorkbenchImages
				.getImageDescriptor(IDEInternalWorkbenchImages.IMG_ETOOL_BUILD_EXEC);
		service.registerIconForFamily(newImage,
				ResourcesPlugin.FAMILY_MANUAL_BUILD);
		service.registerIconForFamily(newImage,
				ResourcesPlugin.FAMILY_AUTO_BUILD);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#postStartup()
	 */
	public void postStartup() {
		try {
			refreshFromLocal();
			checkUpdates();
			((Workbench) PlatformUI.getWorkbench()).registerService(
					ISelectionConversionService.class,
					new IDESelectionConversionService());

			initializeSettingsChangeListener();
			Display.getCurrent().addListener(SWT.Settings,
					settingsChangeListener);
		} finally {// Resume background jobs after we startup
			Platform.getJobManager().resume();
		}
	}

	/**
	 * Initialize the listener for settings changes.
	 */
	private void initializeSettingsChangeListener() {
		settingsChangeListener = new Listener() {
			
			boolean currentHighContrast = Display.getCurrent().getHighContrast();
			public void handleEvent(org.eclipse.swt.widgets.Event event) {
				if(Display.getCurrent().getHighContrast() == currentHighContrast)
					return;
				
				currentHighContrast = !currentHighContrast;
				
				// make sure they really want to do this
				if (new MessageDialog(null,
						IDEWorkbenchMessages.SystemSettingsChange_title, null,
						IDEWorkbenchMessages.SystemSettingsChange_message,
						MessageDialog.QUESTION, new String[] {
								IDEWorkbenchMessages.SystemSettingsChange_yes,
								IDEWorkbenchMessages.SystemSettingsChange_no },
						1).open() == Window.OK) {
					PlatformUI.getWorkbench().restart();
				}
			}
		};

	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#postShutdown
	 */
	public void postShutdown() {
		if (activityHelper != null) {
			activityHelper.shutdown();
			activityHelper = null;
		}
		if (idleHelper != null) {
			idleHelper.shutdown();
			idleHelper = null;
		}
		if (IDEWorkbenchPlugin.getPluginWorkspace() != null) {
			disconnectFromWorkspace();
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#preShutdown()
	 */
	public boolean preShutdown() {
		Display.getCurrent().removeListener(SWT.Settings,
				settingsChangeListener);
		return super.preShutdown();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#eventLoopException
	 */
	public void eventLoopException(Throwable exception) {
		super.eventLoopException(exception);
		if (exceptionHandler != null) {
			exceptionHandler.handleException(exception);
		} else {
			if (getWorkbenchConfigurer() != null) {
				getWorkbenchConfigurer().emergencyClose();
			}
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#createWorkbenchWindowAdvisor(org.eclipse.ui.application.IWorkbenchWindowConfigurer)
	 */
	public WorkbenchWindowAdvisor createWorkbenchWindowAdvisor(
			IWorkbenchWindowConfigurer configurer) {
		return new IDEWorkbenchWindowAdvisor(this, configurer);
	}

	/**
	 * Return true if the intro plugin is present and false otherwise.
	 * 
	 * @return boolean
	 */
	public boolean hasIntro() {
		return getWorkbenchConfigurer().getWorkbench().getIntroManager()
				.hasIntro();
	}

	private void refreshFromLocal() {
		String[] commandLineArgs = Platform.getCommandLineArgs();
		IPreferenceStore store = IDEWorkbenchPlugin.getDefault()
				.getPreferenceStore();
		boolean refresh = store
				.getBoolean(IDEInternalPreferences.REFRESH_WORKSPACE_ON_STARTUP);
		if (!refresh) {
			return;
		}

		// Do not refresh if it was already done by core on startup.
		for (int i = 0; i < commandLineArgs.length; i++) {
			if (commandLineArgs[i].equalsIgnoreCase("-refresh")) { //$NON-NLS-1$
				return;
			}
		}

		final IContainer root = ResourcesPlugin.getWorkspace().getRoot();
		Job job = new WorkspaceJob(IDEWorkbenchMessages.Workspace_refreshing) {
			public IStatus runInWorkspace(IProgressMonitor monitor)
					throws CoreException {
				root.refreshLocal(IResource.DEPTH_INFINITE, monitor);
				return Status.OK_STATUS;
			}
		};
		job.setRule(root);
		job.schedule();
	}

	/**
	 * Disconnect from the core workspace.
	 */
	private void disconnectFromWorkspace() {
		// save the workspace
		final MultiStatus status = new MultiStatus(
				IDEWorkbenchPlugin.IDE_WORKBENCH, 1,
				IDEWorkbenchMessages.ProblemSavingWorkbench, null);
		IRunnableWithProgress runnable = new IRunnableWithProgress() {
			public void run(IProgressMonitor monitor) {
				try {
					status.merge(ResourcesPlugin.getWorkspace().save(true,
							monitor));
				} catch (CoreException e) {
					status.merge(e.getStatus());
				}
			}
		};
		try {
			new ProgressMonitorJobsDialog(null).run(true, false, runnable);
		} catch (InvocationTargetException e) {
			status
					.merge(new Status(IStatus.ERROR,
							IDEWorkbenchPlugin.IDE_WORKBENCH, 1,
							IDEWorkbenchMessages.InternalError, e
									.getTargetException()));
		} catch (InterruptedException e) {
			status.merge(new Status(IStatus.ERROR,
					IDEWorkbenchPlugin.IDE_WORKBENCH, 1,
					IDEWorkbenchMessages.InternalError, e));
		}
		ErrorDialog.openError(null,
				IDEWorkbenchMessages.ProblemsSavingWorkspace, null, status,
				IStatus.ERROR | IStatus.WARNING);
		if (!status.isOK()) {
			IDEWorkbenchPlugin.log(
					IDEWorkbenchMessages.ProblemsSavingWorkspace, status);
		}
	}

	/**
	 * Checks if the -newUpdates command line argument is present and if so,
	 * opens the update manager.
	 */
	private void checkUpdates() {
		boolean newUpdates = false;
		String[] commandLineArgs = Platform.getCommandLineArgs();
		for (int i = 0; i < commandLineArgs.length; i++) {
			if (commandLineArgs[i].equalsIgnoreCase("-newUpdates")) { //$NON-NLS-1$
				newUpdates = true;
				break;
			}
		}

		if (newUpdates) {
			try {
				SiteManager.handleNewChanges();
			} catch (CoreException e) {
				IDEWorkbenchPlugin.log(
						"Problem opening update manager", e.getStatus()); //$NON-NLS-1$
			}
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#getDefaultPageInput
	 */
	public IAdaptable getDefaultPageInput() {
		return ResourcesPlugin.getWorkspace().getRoot();
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor
	 */
	public String getInitialWindowPerspectiveId() {
		int index = PlatformUI.getWorkbench().getWorkbenchWindowCount() - 1;

		String perspectiveId = null;
		AboutInfo[] welcomeInfos = getWelcomePerspectiveInfos();
		if (index >= 0 && welcomeInfos != null && index < welcomeInfos.length) {
			perspectiveId = welcomeInfos[index].getWelcomePerspectiveId();
		}
		if (perspectiveId == null) {
			perspectiveId = IDE.RESOURCE_PERSPECTIVE_ID;
		}
		return perspectiveId;
	}

	/**
	 * Returns the map of versioned feature ids -> info object for all installed
	 * features. The format of the versioned feature id (the key of the map) is
	 * featureId + ":" + versionId.
	 * 
	 * @return map of versioned feature ids -> info object (key type:
	 *         <code>String</code>, value type: <code>AboutInfo</code>)
	 * @since 3.0
	 */
	private Map computeBundleGroupMap() {
		// use tree map to get predicable order
		Map ids = new TreeMap();

		IBundleGroupProvider[] providers = Platform.getBundleGroupProviders();
		for (int i = 0; i < providers.length; ++i) {
			IBundleGroup[] groups = providers[i].getBundleGroups();
			for (int j = 0; j < groups.length; ++j) {
				IBundleGroup group = groups[j];
				AboutInfo info = new AboutInfo(group);

				String version = info.getVersionId();
				version = version == null ? "0.0.0" //$NON-NLS-1$
						: new PluginVersionIdentifier(version).toString();
				String versionedFeature = group.getIdentifier() + ":" + version; //$NON-NLS-1$

				ids.put(versionedFeature, info);
			}
		}

		return ids;
	}

	/**
	 * Returns the ordered map of versioned feature ids -> AboutInfo that are
	 * new for this session.
	 * 
	 * @return ordered map of versioned feature ids (key type:
	 *         <code>String</code>) -> infos (value type:
	 *         <code>AboutInfo</code>).
	 */
	public Map getNewlyAddedBundleGroups() {
		if (newlyAddedBundleGroups == null) {
			newlyAddedBundleGroups = createNewBundleGroupsMap();
		}
		return newlyAddedBundleGroups;
	}

	/**
	 * Updates the old features setting and returns a map of new features.
	 */
	private Map createNewBundleGroupsMap() {
		// retrieve list of installed bundle groups from last session
		IDialogSettings settings = IDEWorkbenchPlugin.getDefault()
				.getDialogSettings();
		String[] previousFeaturesArray = settings.getArray(INSTALLED_FEATURES);

		// get a map of currently installed bundle groups and store it for next
		// session
		Map bundleGroups = computeBundleGroupMap();
		String[] currentFeaturesArray = new String[bundleGroups.size()];
		bundleGroups.keySet().toArray(currentFeaturesArray);
		settings.put(INSTALLED_FEATURES, currentFeaturesArray);

		// remove the previously known from the current set
		if (previousFeaturesArray != null) {
			for (int i = 0; i < previousFeaturesArray.length; ++i) {
				bundleGroups.remove(previousFeaturesArray[i]);
			}
		}

		return bundleGroups;
	}

	/**
	 * Declares all IDE-specific workbench images. This includes both "shared"
	 * images (named in {@link IDE.SharedImages}) and internal images (named in
	 * {@link org.eclipse.ui.internal.ide.IDEInternalWorkbenchImages}).
	 * 
	 * @see IWorkbenchConfigurer#declareImage
	 */
	private void declareWorkbenchImages() {

		final String ICONS_PATH = "$nl$/icons/full/";//$NON-NLS-1$
		final String PATH_ELOCALTOOL = ICONS_PATH + "elcl16/"; // Enabled  toolbar icons.//$NON-NLS-1$
		final String PATH_DLOCALTOOL = ICONS_PATH + "dlcl16/"; // Disabled  toolbar icons.//$NON-NLS-1$
		final String PATH_ETOOL = ICONS_PATH + "etool16/"; // Enabled toolbar icons.//$NON-NLS-1$
		final String PATH_DTOOL = ICONS_PATH + "dtool16/"; // Disabled toolbar icons.//$NON-NLS-1$
		final String PATH_OBJECT = ICONS_PATH + "obj16/"; // Model object icons//$NON-NLS-1$
		final String PATH_WIZBAN = ICONS_PATH + "wizban/"; // Wizard icons//$NON-NLS-1$

		Bundle ideBundle = Platform.getBundle(IDEWorkbenchPlugin.IDE_WORKBENCH);

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_ETOOL_BUILD_EXEC, PATH_ETOOL
						+ "build_exec.gif", false); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_ETOOL_BUILD_EXEC_HOVER,
				PATH_ETOOL + "build_exec.gif", false); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_ETOOL_BUILD_EXEC_DISABLED,
				PATH_DTOOL + "build_exec.gif", false); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_ETOOL_SEARCH_SRC, PATH_ETOOL
						+ "search_src.gif", false); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_ETOOL_SEARCH_SRC_HOVER,
				PATH_ETOOL + "search_src.gif", false); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_ETOOL_SEARCH_SRC_DISABLED,
				PATH_DTOOL + "search_src.gif", false); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_ETOOL_NEXT_NAV, PATH_ETOOL
						+ "next_nav.gif", false); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_ETOOL_PREVIOUS_NAV, PATH_ETOOL
						+ "prev_nav.gif", false); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_WIZBAN_NEWPRJ_WIZ, PATH_WIZBAN
						+ "newprj_wiz.png", false); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_WIZBAN_NEWFOLDER_WIZ,
				PATH_WIZBAN + "newfolder_wiz.png", false); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_WIZBAN_NEWFILE_WIZ, PATH_WIZBAN
						+ "newfile_wiz.png", false); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_WIZBAN_IMPORTDIR_WIZ,
				PATH_WIZBAN + "importdir_wiz.png", false); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_WIZBAN_IMPORTZIP_WIZ,
				PATH_WIZBAN + "importzip_wiz.png", false); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_WIZBAN_EXPORTDIR_WIZ,
				PATH_WIZBAN + "exportdir_wiz.png", false); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_WIZBAN_EXPORTZIP_WIZ,
				PATH_WIZBAN + "exportzip_wiz.png", false); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_WIZBAN_RESOURCEWORKINGSET_WIZ,
				PATH_WIZBAN + "workset_wiz.png", false); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_DLGBAN_SAVEAS_DLG, PATH_WIZBAN
						+ "saveas_wiz.png", false); //$NON-NLS-1$
		
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_DLGBAN_QUICKFIX_DLG, PATH_WIZBAN
						+ "quick_fix.png", false); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle, IDE.SharedImages.IMG_OBJ_PROJECT,
				PATH_OBJECT + "prj_obj.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDE.SharedImages.IMG_OBJ_PROJECT_CLOSED, PATH_OBJECT
						+ "cprj_obj.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle, IDE.SharedImages.IMG_OPEN_MARKER,
				PATH_ELOCALTOOL + "gotoobj_tsk.gif", true); //$NON-NLS-1$
		
		declareWorkbenchImage(ideBundle, IDEInternalWorkbenchImages.IMG_ELCL_QUICK_FIX_ENABLED,
				PATH_ELOCALTOOL + "smartmode_co.gif", true); //$NON-NLS-1$
		
		declareWorkbenchImage(ideBundle, IDEInternalWorkbenchImages.IMG_DLCL_QUICK_FIX_DISABLED,
				PATH_DLOCALTOOL + "smartmode_co.gif", true); //$NON-NLS-1$

		// task objects
		// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_HPRIO_TSK,
		// PATH_OBJECT+"hprio_tsk.gif");
		// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_MPRIO_TSK,
		// PATH_OBJECT+"mprio_tsk.gif");
		// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_LPRIO_TSK,
		// PATH_OBJECT+"lprio_tsk.gif");

		declareWorkbenchImage(ideBundle, IDE.SharedImages.IMG_OBJS_TASK_TSK,
				PATH_OBJECT + "taskmrk_tsk.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle, IDE.SharedImages.IMG_OBJS_BKMRK_TSK,
				PATH_OBJECT + "bkmrk_tsk.gif", true); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_OBJS_COMPLETE_TSK, PATH_OBJECT
						+ "complete_tsk.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_OBJS_INCOMPLETE_TSK, PATH_OBJECT
						+ "incomplete_tsk.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_OBJS_WELCOME_ITEM, PATH_OBJECT
						+ "welcome_item.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_OBJS_WELCOME_BANNER, PATH_OBJECT
						+ "welcome_banner.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_OBJS_ERROR_PATH, PATH_OBJECT
						+ "error_tsk.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_OBJS_WARNING_PATH, PATH_OBJECT
						+ "warn_tsk.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_OBJS_INFO_PATH, PATH_OBJECT
						+ "info_tsk.gif", true); //$NON-NLS-1$

		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_LCL_FLAT_LAYOUT, PATH_ELOCALTOOL
						+ "flatLayout.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_LCL_HIERARCHICAL_LAYOUT,
				PATH_ELOCALTOOL + "hierarchicalLayout.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_ETOOL_PROBLEM_CATEGORY,
				PATH_ETOOL + "problem_category.gif", true); //$NON-NLS-1$
		declareWorkbenchImage(ideBundle,
				IDEInternalWorkbenchImages.IMG_LCL_LINKTO_HELP, PATH_ELOCALTOOL
						+ "linkto_help.gif", false); //$NON-NLS-1$

		// synchronization indicator objects
		// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_WBET_STAT,
		// PATH_OVERLAY+"wbet_stat.gif");
		// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_SBET_STAT,
		// PATH_OVERLAY+"sbet_stat.gif");
		// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_CONFLICT_STAT,
		// PATH_OVERLAY+"conflict_stat.gif");

		// content locality indicator objects
		// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_NOTLOCAL_STAT,
		// PATH_STAT+"notlocal_stat.gif");
		// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_LOCAL_STAT,
		// PATH_STAT+"local_stat.gif");
		// declareRegistryImage(IDEInternalWorkbenchImages.IMG_OBJS_FILLLOCAL_STAT,
		// PATH_STAT+"filllocal_stat.gif");
	}

	/**
	 * Declares an IDE-specific workbench image.
	 * 
	 * @param symbolicName
	 *            the symbolic name of the image
	 * @param path
	 *            the path of the image file; this path is relative to the base
	 *            of the IDE plug-in
	 * @param shared
	 *            <code>true</code> if this is a shared image, and
	 *            <code>false</code> if this is not a shared image
	 * @see IWorkbenchConfigurer#declareImage
	 */
	private void declareWorkbenchImage(Bundle ideBundle, String symbolicName,
			String path, boolean shared) {
		URL url = Platform.find(ideBundle, new Path(path));
		ImageDescriptor desc = ImageDescriptor.createFromURL(url);
		getWorkbenchConfigurer().declareImage(symbolicName, desc, shared);
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#getMainPreferencePageId
	 */
	public String getMainPreferencePageId() {
		// indicate that we want the Workench preference page to be prominent
		return WORKBENCH_PREFERENCE_CATEGORY_ID;
	}

	/**
	 * @return the workspace location string, or <code>null</code> if the
	 *         location is not being shown
	 */
	public String getWorkspaceLocation() {
		return workspaceLocation;
	}

	/**
	 * @return the welcome perspective infos, or <code>null</code> if none or
	 *         if they should be ignored due to the new intro being present
	 */
	public AboutInfo[] getWelcomePerspectiveInfos() {
		if (welcomePerspectiveInfos == null) {
			// support old welcome perspectives if intro plugin is not present
			if (!hasIntro()) {
				Map m = getNewlyAddedBundleGroups();
				ArrayList list = new ArrayList(m.size());
				for (Iterator i = m.values().iterator(); i.hasNext();) {
					AboutInfo info = (AboutInfo) i.next();
					if (info != null && info.getWelcomePerspectiveId() != null
							&& info.getWelcomePageURL() != null) {
						list.add(info);
					}
				}
				welcomePerspectiveInfos = new AboutInfo[list.size()];
				list.toArray(welcomePerspectiveInfos);
			}
		}
		return welcomePerspectiveInfos;
	}
}
