bundles/org.eclipse.team.ui/src/org/eclipse/team/internal/ui/synchronize/ChangesSection.java - gerrit/platform/eclipse.platform.team - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2003 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.synchronize;

 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.MultiStatus;
 import org.eclipse.jface.dialogs.ErrorDialog;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.*;
 import org.eclipse.team.core.ITeamStatus;
 import org.eclipse.team.core.synchronize.*;
 import org.eclipse.team.internal.ui.*;
 import org.eclipse.team.ui.ISharedImages;
 import org.eclipse.team.ui.synchronize.subscriber.SubscriberParticipant;
 import org.eclipse.team.ui.synchronize.subscriber.SubscriberParticipantPage;
 import org.eclipse.team.ui.synchronize.viewers.ISynchronizeModelChangeListener;
 import org.eclipse.team.ui.synchronize.viewers.SynchronizeModelElement;
 import org.eclipse.ui.forms.HyperlinkGroup;
 import org.eclipse.ui.forms.events.HyperlinkAdapter;
 import org.eclipse.ui.forms.events.HyperlinkEvent;
 import org.eclipse.ui.forms.widgets.FormToolkit;
 import org.eclipse.ui.forms.widgets.Hyperlink;
 import org.eclipse.ui.part.PageBook;

 /**
  * Section shown in a participant page to show the changes for this participant. This
  * includes a diff viewer for browsing the changes.
  *
  * @since 3.0
  */
 public class ChangesSection extends Composite {

 	private SubscriberParticipant participant;
 	private Composite parent;
 	private SubscriberParticipantPage page;
 	private FormToolkit forms;

 	/**
 	 * Page book either shows the diff tree viewer if there are changes or
 	 * shows a message to the user if there are no changes that would be
 	 * shown in the tree.
 	 */
 	private PageBook changesSectionContainer;

 	/**
 	 * Shows message to user is no changes are to be shown in the diff
 	 * tree viewer.
 	 */
 	private Composite filteredContainer;

 	/**
 	 * Diff tree viewer that shows synchronization changes. This is created
 	 * by the participant.
 	 */
 	private Viewer changesViewer;

 	/**
 	 * Boolean that indicates whether the error page is being shown.
 	 * This is used to avoid redrawing the error page when new events come in
 	 */
 	private boolean showingError;

 	/**
 	 * Listen to sync set changes so that we can update message to user and totals.
 	 */
 	private ISynchronizeModelChangeListener changedListener = new ISynchronizeModelChangeListener() {
 		public void modelChanged(SynchronizeModelElement root) {
 			calculateDescription();
 		}
 	};

 	/**
 	 * Listener registered with the subscriber sync info set which contains
 	 * all out-of-sync resources for the subscriber.
 	 */
 	private ISyncInfoSetChangeListener subscriberListener = new ISyncInfoSetChangeListener() {
 		public void syncInfoSetReset(SyncInfoSet set, IProgressMonitor monitor) {
 			// Handled by output set listener
 		}
 		public void syncInfoChanged(ISyncInfoSetChangeEvent event, IProgressMonitor monitor) {
 			calculateDescription();
 		}
 		public void syncInfoSetErrors(SyncInfoSet set, ITeamStatus[] errors, IProgressMonitor monitor) {
 			// Handled by output set listener
 		}
 	};

 	/**
 	 * Listener registered with the output sync info set which contains
 	 * only the visible sync info.
 	 */
 	private ISyncInfoSetChangeListener outputSetListener = new ISyncInfoSetChangeListener() {
 		public void syncInfoSetReset(SyncInfoSet set, IProgressMonitor monitor) {
 			calculateDescription();
 		}
 		public void syncInfoChanged(ISyncInfoSetChangeEvent event, IProgressMonitor monitor) {
 			// Input changed listener will call calculateDescription()
 			// The input will then react to output set changes
 		}
 		public void syncInfoSetErrors(SyncInfoSet set, ITeamStatus[] errors, IProgressMonitor monitor) {
 			calculateDescription();
 		}
 	};

 	/**
 	 * Create a changes section on the following page.
 	 *
 	 * @param parent the parent control
 	 * @param page the page showing this section
 	 */
 	public ChangesSection(Composite parent, SubscriberParticipantPage page) {
 		super(parent, SWT.NONE);
 		this.page = page;
 		this.participant = page.getParticipant();
 		this.parent = parent;

 		GridLayout layout = new GridLayout();
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		setLayout(layout);
 		GridData data = new GridData(GridData.FILL_BOTH);
 		data.grabExcessVerticalSpace = true;
 		setLayoutData(data);

 		forms = new FormToolkit(parent.getDisplay());
 		forms.setBackground(getBackgroundColor());
 		HyperlinkGroup group = forms.getHyperlinkGroup();
 		group.setBackground(getBackgroundColor());

 		changesSectionContainer = new PageBook(this, SWT.NONE);
 		data = new GridData(GridData.FILL_BOTH);
 		data.grabExcessHorizontalSpace = true;
 		data.grabExcessVerticalSpace = true;
 		changesSectionContainer.setLayoutData(data);
 	}

 	public Composite getComposite() {
 		return changesSectionContainer;
 	}

 	public void setViewer(Viewer viewer) {
 		this.changesViewer = viewer;
 		calculateDescription();
 		page.getViewerConfiguration().addInputChangedListener(changedListener);
 		participant.getSubscriberSyncInfoCollector().getSubscriberSyncInfoSet().addSyncSetChangedListener(subscriberListener);
 		participant.getSubscriberSyncInfoCollector().getSyncInfoTree().addSyncSetChangedListener(outputSetListener);
 	}

 	private void calculateDescription() {
 		SyncInfoTree syncInfoTree = participant.getSubscriberSyncInfoCollector().getSyncInfoTree();
 		if (syncInfoTree.getErrors().length > 0) {
 			if (!showingError) {
 				TeamUIPlugin.getStandardDisplay().asyncExec(new Runnable() {
 					public void run() {
 						if (changesSectionContainer.isDisposed()) return;
 						if(filteredContainer != null) {
 							filteredContainer.dispose();
 							filteredContainer = null;
 						}
 						filteredContainer = getErrorComposite(changesSectionContainer);
 						changesSectionContainer.showPage(filteredContainer);
 						showingError = true;
 					}
 				});
 			}
 			return;
 		}

 		showingError = false;
 		if(syncInfoTree.size() == 0) {
 			TeamUIPlugin.getStandardDisplay().asyncExec(new Runnable() {
 				public void run() {
 					if (changesSectionContainer.isDisposed()) return;
 					if(filteredContainer != null) {
 						filteredContainer.dispose();
 						filteredContainer = null;
 					}
 					filteredContainer = getEmptyChangesComposite(changesSectionContainer);
 					changesSectionContainer.showPage(filteredContainer);
 				}
 			});
 		} else {
 			TeamUIPlugin.getStandardDisplay().asyncExec(new Runnable() {
 				public void run() {
 					if(filteredContainer != null) {
 						filteredContainer.dispose();
 						filteredContainer = null;
 					}
 					changesSectionContainer.showPage(changesViewer.getControl());
 				}
 			});
 		}
 	}

 	private boolean isThreeWay() {
 		return page.getParticipant().getSubscriber().getResourceComparator().isThreeWay();
 	}

 	private Composite getEmptyChangesComposite(Composite parent) {
 		Composite composite = new Composite(parent, SWT.NONE);
 		composite.setBackground(getBackgroundColor());
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		composite.setLayout(layout);
 		GridData data = new GridData(GridData.FILL_BOTH);
 		data.grabExcessVerticalSpace = true;
 		composite.setLayoutData(data);

 		if(! isThreeWay()) {
 			createDescriptionLabel(composite,Policy.bind("ChangesSection.noChanges", participant.getName()));	 //$NON-NLS-1$
 			return composite;
 		}

 		SyncInfoSet workspace = participant.getSubscriberSyncInfoCollector().getSubscriberSyncInfoSet();
 		SyncInfoSet workingSet = participant.getSubscriberSyncInfoCollector().getWorkingSetSyncInfoSet();
 		SyncInfoSet filteredSet = participant.getSubscriberSyncInfoCollector().getSyncInfoTree();

 		int changesInWorkspace = workspace.size();
 		int changesInWorkingSet = workingSet.size();
 		int changesInFilter = filteredSet.size();

 		long outgoingChanges = workingSet.countFor(SyncInfo.OUTGOING, SyncInfo.DIRECTION_MASK);
 		long incomingChanges = workingSet.countFor(SyncInfo.INCOMING, SyncInfo.DIRECTION_MASK);

 		if(changesInFilter == 0 && changesInWorkingSet != 0) {
 			int mode = participant.getMode();
 			final int newMode = outgoingChanges != 0 ? SubscriberParticipant.OUTGOING_MODE : SubscriberParticipant.INCOMING_MODE;
 			long numChanges = outgoingChanges != 0 ? outgoingChanges : incomingChanges;
 			StringBuffer text = new StringBuffer();
 			text.append(Policy.bind("ChangesSection.filterHides", Utils.modeToString(participant.getMode()))); //$NON-NLS-1$
 			if(numChanges > 1) {
 				text.append(Policy.bind("ChangesSection.filterHidesPlural", Long.toString(numChanges), Utils.modeToString(newMode))); //$NON-NLS-1$
 			} else {
 				text.append(Policy.bind("ChangesSection.filterHidesSingular", Long.toString(numChanges), Utils.modeToString(newMode))); //$NON-NLS-1$
 			}

 			Label warning = new Label(composite, SWT.NONE);
 			warning.setImage(TeamUIPlugin.getPlugin().getImage(ISharedImages.IMG_WARNING));

 			Hyperlink link = forms.createHyperlink(composite, Policy.bind("ChangesSection.filterChange", Utils.modeToString(newMode)), SWT.WRAP); //$NON-NLS-1$
 			link.addHyperlinkListener(new HyperlinkAdapter() {
 				public void linkActivated(HyperlinkEvent e) {
 					participant.setMode(newMode);
 				}
 			});
 			forms.getHyperlinkGroup().add(link);
 			createDescriptionLabel(composite, text.toString());
 		} else if(changesInFilter == 0 && changesInWorkingSet == 0 && changesInWorkspace != 0) {
 			Label warning = new Label(composite, SWT.NONE);
 			warning.setImage(TeamUIPlugin.getPlugin().getImage(ISharedImages.IMG_WARNING));

 			Hyperlink link = forms.createHyperlink(composite, Policy.bind("ChangesSection.workingSetRemove"), SWT.WRAP); //$NON-NLS-1$
 			link.addHyperlinkListener(new HyperlinkAdapter() {
 				public void linkActivated(HyperlinkEvent e) {
 					participant.setWorkingSet(null);
 				}
 			});
 			forms.getHyperlinkGroup().add(link);
 			createDescriptionLabel(composite,Policy.bind("ChangesSection.workingSetHiding", Utils.workingSetToString(participant.getWorkingSet(), 50)));	 //$NON-NLS-1$
 		} else {
 			createDescriptionLabel(composite,Policy.bind("ChangesSection.noChanges", participant.getName()));	 //$NON-NLS-1$
 		}
 		return composite;
 	}

 	private Label createDescriptionLabel(Composite parent, String text) {
 		Label description = new Label(parent, SWT.WRAP);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		data.horizontalSpan = 2;
 		data.widthHint = 100;
 		description.setLayoutData(data);
 		description.setText(text);
 		description.setBackground(getBackgroundColor());
 		return description;
 	}

 	public void dispose() {
 		super.dispose();
 		page.getViewerConfiguration().removeInputChangedListener(changedListener);
 		participant.getSubscriberSyncInfoCollector().getSubscriberSyncInfoSet().removeSyncSetChangedListener(subscriberListener);
 	}

 	private Composite getErrorComposite(Composite parent) {
 		Composite composite = new Composite(parent, SWT.NONE);
 		composite.setBackground(getBackgroundColor());
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		composite.setLayout(layout);
 		GridData data = new GridData(GridData.FILL_BOTH);
 		data.grabExcessVerticalSpace = true;
 		composite.setLayoutData(data);

 		Hyperlink link = new Hyperlink(composite, SWT.WRAP);
 		link.setText(Policy.bind("ChangesSection.8")); //$NON-NLS-1$
 		link.addHyperlinkListener(new HyperlinkAdapter() {
 			public void linkActivated(HyperlinkEvent e) {
 				showErrors();
 			}
 		});
 		link.setBackground(getBackgroundColor());
 		link.setUnderlined(true);

 		link = new Hyperlink(composite, SWT.WRAP);
 		link.setText(Policy.bind("ChangesSection.9")); //$NON-NLS-1$
 		link.addHyperlinkListener(new HyperlinkAdapter() {
 			public void linkActivated(HyperlinkEvent e) {
 				participant.getSubscriberSyncInfoCollector().reset();
 			}
 		});
 		link.setBackground(getBackgroundColor());
 		link.setUnderlined(true);

 		createDescriptionLabel(composite, Policy.bind("ChangesSection.10", participant.getName())); //$NON-NLS-1$

 		return composite;
 	}

 	/* private */ void showErrors() {
 		ITeamStatus[] status = participant.getSubscriberSyncInfoCollector().getSyncInfoTree().getErrors();
 		String title = Policy.bind("ChangesSection.11"); //$NON-NLS-1$
 		if (status.length == 1) {
 			ErrorDialog.openError(getShell(), title, status[0].getMessage(), status[0]);
 		} else {
 			MultiStatus multi = new MultiStatus(TeamUIPlugin.ID, 0, status, Policy.bind("ChangesSection.12"), null); //$NON-NLS-1$
 			ErrorDialog.openError(getShell(), title, null, multi);
 		}
 	}

 	protected Color getBackgroundColor() {
 		return getShell().getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2003 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.synchronize;

	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.core.runtime.MultiStatus;
	import org.eclipse.jface.dialogs.ErrorDialog;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.graphics.Color;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.*;
	import org.eclipse.team.core.ITeamStatus;
	import org.eclipse.team.core.synchronize.*;
	import org.eclipse.team.internal.ui.*;
	import org.eclipse.team.ui.ISharedImages;
	import org.eclipse.team.ui.synchronize.subscriber.SubscriberParticipant;
	import org.eclipse.team.ui.synchronize.subscriber.SubscriberParticipantPage;
	import org.eclipse.team.ui.synchronize.viewers.ISynchronizeModelChangeListener;
	import org.eclipse.team.ui.synchronize.viewers.SynchronizeModelElement;
	import org.eclipse.ui.forms.HyperlinkGroup;
	import org.eclipse.ui.forms.events.HyperlinkAdapter;
	import org.eclipse.ui.forms.events.HyperlinkEvent;
	import org.eclipse.ui.forms.widgets.FormToolkit;
	import org.eclipse.ui.forms.widgets.Hyperlink;
	import org.eclipse.ui.part.PageBook;

	/**
	* Section shown in a participant page to show the changes for this participant. This
	* includes a diff viewer for browsing the changes.
	*
	* @since 3.0
	*/
	public class ChangesSection extends Composite {

	private SubscriberParticipant participant;
	private Composite parent;
	private SubscriberParticipantPage page;
	private FormToolkit forms;

	/**
	* Page book either shows the diff tree viewer if there are changes or
	* shows a message to the user if there are no changes that would be
	* shown in the tree.
	*/
	private PageBook changesSectionContainer;

	/**
	* Shows message to user is no changes are to be shown in the diff
	* tree viewer.
	*/
	private Composite filteredContainer;

	/**
	* Diff tree viewer that shows synchronization changes. This is created
	* by the participant.
	*/
	private Viewer changesViewer;

	/**
	* Boolean that indicates whether the error page is being shown.
	* This is used to avoid redrawing the error page when new events come in
	*/
	private boolean showingError;

	/**
	* Listen to sync set changes so that we can update message to user and totals.
	*/
	private ISynchronizeModelChangeListener changedListener = new ISynchronizeModelChangeListener() {
	public void modelChanged(SynchronizeModelElement root) {
	calculateDescription();
	}
	};

	/**
	* Listener registered with the subscriber sync info set which contains
	* all out-of-sync resources for the subscriber.
	*/
	private ISyncInfoSetChangeListener subscriberListener = new ISyncInfoSetChangeListener() {
	public void syncInfoSetReset(SyncInfoSet set, IProgressMonitor monitor) {
	// Handled by output set listener
	}
	public void syncInfoChanged(ISyncInfoSetChangeEvent event, IProgressMonitor monitor) {
	calculateDescription();
	}
	public void syncInfoSetErrors(SyncInfoSet set, ITeamStatus[] errors, IProgressMonitor monitor) {
	// Handled by output set listener
	}
	};

	/**
	* Listener registered with the output sync info set which contains
	* only the visible sync info.
	*/
	private ISyncInfoSetChangeListener outputSetListener = new ISyncInfoSetChangeListener() {
	public void syncInfoSetReset(SyncInfoSet set, IProgressMonitor monitor) {
	calculateDescription();
	}
	public void syncInfoChanged(ISyncInfoSetChangeEvent event, IProgressMonitor monitor) {
	// Input changed listener will call calculateDescription()
	// The input will then react to output set changes
	}
	public void syncInfoSetErrors(SyncInfoSet set, ITeamStatus[] errors, IProgressMonitor monitor) {
	calculateDescription();
	}
	};

	/**
	* Create a changes section on the following page.
	*
	* @param parent the parent control
	* @param page the page showing this section
	*/
	public ChangesSection(Composite parent, SubscriberParticipantPage page) {
	super(parent, SWT.NONE);
	this.page = page;
	this.participant = page.getParticipant();
	this.parent = parent;

	GridLayout layout = new GridLayout();
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	setLayout(layout);
	GridData data = new GridData(GridData.FILL_BOTH);
	data.grabExcessVerticalSpace = true;
	setLayoutData(data);

	forms = new FormToolkit(parent.getDisplay());
	forms.setBackground(getBackgroundColor());
	HyperlinkGroup group = forms.getHyperlinkGroup();
	group.setBackground(getBackgroundColor());

	changesSectionContainer = new PageBook(this, SWT.NONE);
	data = new GridData(GridData.FILL_BOTH);
	data.grabExcessHorizontalSpace = true;
	data.grabExcessVerticalSpace = true;
	changesSectionContainer.setLayoutData(data);
	}

	public Composite getComposite() {
	return changesSectionContainer;
	}

	public void setViewer(Viewer viewer) {
	this.changesViewer = viewer;
	calculateDescription();
	page.getViewerConfiguration().addInputChangedListener(changedListener);
	participant.getSubscriberSyncInfoCollector().getSubscriberSyncInfoSet().addSyncSetChangedListener(subscriberListener);
	participant.getSubscriberSyncInfoCollector().getSyncInfoTree().addSyncSetChangedListener(outputSetListener);
	}

	private void calculateDescription() {
	SyncInfoTree syncInfoTree = participant.getSubscriberSyncInfoCollector().getSyncInfoTree();
	if (syncInfoTree.getErrors().length > 0) {
	if (!showingError) {
	TeamUIPlugin.getStandardDisplay().asyncExec(new Runnable() {
	public void run() {
	if (changesSectionContainer.isDisposed()) return;
	if(filteredContainer != null) {
	filteredContainer.dispose();
	filteredContainer = null;
	}
	filteredContainer = getErrorComposite(changesSectionContainer);
	changesSectionContainer.showPage(filteredContainer);
	showingError = true;
	}
	});
	}
	return;
	}

	showingError = false;
	if(syncInfoTree.size() == 0) {
	TeamUIPlugin.getStandardDisplay().asyncExec(new Runnable() {
	public void run() {
	if (changesSectionContainer.isDisposed()) return;
	if(filteredContainer != null) {
	filteredContainer.dispose();
	filteredContainer = null;
	}
	filteredContainer = getEmptyChangesComposite(changesSectionContainer);
	changesSectionContainer.showPage(filteredContainer);
	}
	});
	} else {
	TeamUIPlugin.getStandardDisplay().asyncExec(new Runnable() {
	public void run() {
	if(filteredContainer != null) {
	filteredContainer.dispose();
	filteredContainer = null;
	}
	changesSectionContainer.showPage(changesViewer.getControl());
	}
	});
	}
	}

	private boolean isThreeWay() {
	return page.getParticipant().getSubscriber().getResourceComparator().isThreeWay();
	}

	private Composite getEmptyChangesComposite(Composite parent) {
	Composite composite = new Composite(parent, SWT.NONE);
	composite.setBackground(getBackgroundColor());
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	composite.setLayout(layout);
	GridData data = new GridData(GridData.FILL_BOTH);
	data.grabExcessVerticalSpace = true;
	composite.setLayoutData(data);

	if(! isThreeWay()) {
	createDescriptionLabel(composite,Policy.bind("ChangesSection.noChanges", participant.getName())); //$NON-NLS-1$
	return composite;
	}

	SyncInfoSet workspace = participant.getSubscriberSyncInfoCollector().getSubscriberSyncInfoSet();
	SyncInfoSet workingSet = participant.getSubscriberSyncInfoCollector().getWorkingSetSyncInfoSet();
	SyncInfoSet filteredSet = participant.getSubscriberSyncInfoCollector().getSyncInfoTree();

	int changesInWorkspace = workspace.size();
	int changesInWorkingSet = workingSet.size();
	int changesInFilter = filteredSet.size();

	long outgoingChanges = workingSet.countFor(SyncInfo.OUTGOING, SyncInfo.DIRECTION_MASK);
	long incomingChanges = workingSet.countFor(SyncInfo.INCOMING, SyncInfo.DIRECTION_MASK);

	if(changesInFilter == 0 && changesInWorkingSet != 0) {
	int mode = participant.getMode();
	final int newMode = outgoingChanges != 0 ? SubscriberParticipant.OUTGOING_MODE : SubscriberParticipant.INCOMING_MODE;
	long numChanges = outgoingChanges != 0 ? outgoingChanges : incomingChanges;
	StringBuffer text = new StringBuffer();
	text.append(Policy.bind("ChangesSection.filterHides", Utils.modeToString(participant.getMode()))); //$NON-NLS-1$
	if(numChanges > 1) {
	text.append(Policy.bind("ChangesSection.filterHidesPlural", Long.toString(numChanges), Utils.modeToString(newMode))); //$NON-NLS-1$
	} else {
	text.append(Policy.bind("ChangesSection.filterHidesSingular", Long.toString(numChanges), Utils.modeToString(newMode))); //$NON-NLS-1$
	}

	Label warning = new Label(composite, SWT.NONE);
	warning.setImage(TeamUIPlugin.getPlugin().getImage(ISharedImages.IMG_WARNING));

	Hyperlink link = forms.createHyperlink(composite, Policy.bind("ChangesSection.filterChange", Utils.modeToString(newMode)), SWT.WRAP); //$NON-NLS-1$
	link.addHyperlinkListener(new HyperlinkAdapter() {
	public void linkActivated(HyperlinkEvent e) {
	participant.setMode(newMode);
	}
	});
	forms.getHyperlinkGroup().add(link);
	createDescriptionLabel(composite, text.toString());
	} else if(changesInFilter == 0 && changesInWorkingSet == 0 && changesInWorkspace != 0) {
	Label warning = new Label(composite, SWT.NONE);
	warning.setImage(TeamUIPlugin.getPlugin().getImage(ISharedImages.IMG_WARNING));

	Hyperlink link = forms.createHyperlink(composite, Policy.bind("ChangesSection.workingSetRemove"), SWT.WRAP); //$NON-NLS-1$
	link.addHyperlinkListener(new HyperlinkAdapter() {
	public void linkActivated(HyperlinkEvent e) {
	participant.setWorkingSet(null);
	}
	});
	forms.getHyperlinkGroup().add(link);
	createDescriptionLabel(composite,Policy.bind("ChangesSection.workingSetHiding", Utils.workingSetToString(participant.getWorkingSet(), 50))); //$NON-NLS-1$
	} else {
	createDescriptionLabel(composite,Policy.bind("ChangesSection.noChanges", participant.getName())); //$NON-NLS-1$
	}
	return composite;
	}

	private Label createDescriptionLabel(Composite parent, String text) {
	Label description = new Label(parent, SWT.WRAP);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.horizontalSpan = 2;
	data.widthHint = 100;
	description.setLayoutData(data);
	description.setText(text);
	description.setBackground(getBackgroundColor());
	return description;
	}

	public void dispose() {
	super.dispose();
	page.getViewerConfiguration().removeInputChangedListener(changedListener);
	participant.getSubscriberSyncInfoCollector().getSubscriberSyncInfoSet().removeSyncSetChangedListener(subscriberListener);
	}

	private Composite getErrorComposite(Composite parent) {
	Composite composite = new Composite(parent, SWT.NONE);
	composite.setBackground(getBackgroundColor());
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	composite.setLayout(layout);
	GridData data = new GridData(GridData.FILL_BOTH);
	data.grabExcessVerticalSpace = true;
	composite.setLayoutData(data);

	Hyperlink link = new Hyperlink(composite, SWT.WRAP);
	link.setText(Policy.bind("ChangesSection.8")); //$NON-NLS-1$
	link.addHyperlinkListener(new HyperlinkAdapter() {
	public void linkActivated(HyperlinkEvent e) {
	showErrors();
	}
	});
	link.setBackground(getBackgroundColor());
	link.setUnderlined(true);

	link = new Hyperlink(composite, SWT.WRAP);
	link.setText(Policy.bind("ChangesSection.9")); //$NON-NLS-1$
	link.addHyperlinkListener(new HyperlinkAdapter() {
	public void linkActivated(HyperlinkEvent e) {
	participant.getSubscriberSyncInfoCollector().reset();
	}
	});
	link.setBackground(getBackgroundColor());
	link.setUnderlined(true);

	createDescriptionLabel(composite, Policy.bind("ChangesSection.10", participant.getName())); //$NON-NLS-1$

	return composite;
	}

	/* private */ void showErrors() {
	ITeamStatus[] status = participant.getSubscriberSyncInfoCollector().getSyncInfoTree().getErrors();
	String title = Policy.bind("ChangesSection.11"); //$NON-NLS-1$
	if (status.length == 1) {
	ErrorDialog.openError(getShell(), title, status[0].getMessage(), status[0]);
	} else {
	MultiStatus multi = new MultiStatus(TeamUIPlugin.ID, 0, status, Policy.bind("ChangesSection.12"), null); //$NON-NLS-1$
	ErrorDialog.openError(getShell(), title, null, multi);
	}
	}

	protected Color getBackgroundColor() {
	return getShell().getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND);
	}
	}