apitools/org.eclipse.pde.api.tools.ui/src/org/eclipse/pde/api/tools/ui/internal/preferences/ApiBaselinePreferencePage.java - pde/eclipse.pde.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007, 2008 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.pde.api.tools.ui.internal.preferences;

 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.Iterator;

 import org.eclipse.core.resources.IProject;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.preference.PreferencePage;
 import org.eclipse.jface.viewers.ArrayContentProvider;
 import org.eclipse.jface.viewers.CheckStateChangedEvent;
 import org.eclipse.jface.viewers.CheckboxTableViewer;
 import org.eclipse.jface.viewers.DoubleClickEvent;
 import org.eclipse.jface.viewers.ICheckStateListener;
 import org.eclipse.jface.viewers.IDoubleClickListener;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerComparator;
 import org.eclipse.jface.wizard.WizardDialog;
 import org.eclipse.pde.api.tools.internal.provisional.ApiPlugin;
 import org.eclipse.pde.api.tools.internal.provisional.IApiBaselineManager;
 import org.eclipse.pde.api.tools.internal.provisional.model.IApiBaseline;
 import org.eclipse.pde.api.tools.internal.util.Util;
 import org.eclipse.pde.api.tools.ui.internal.ApiToolsLabelProvider;
 import org.eclipse.pde.api.tools.ui.internal.ApiUIPlugin;
 import org.eclipse.pde.api.tools.ui.internal.IApiToolsHelpContextIds;
 import org.eclipse.pde.api.tools.ui.internal.SWTFactory;
 import org.eclipse.pde.api.tools.ui.internal.wizards.ApiBaselineWizard;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.BusyIndicator;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.IWorkbenchPreferencePage;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.preferences.IWorkbenchPreferenceContainer;

 /**
  * This preference page allows {@link IApiProfile}s to be created/removed/edited
  * @since 1.0.0
  */
 public class ApiBaselinePreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
 	/**
 	 * Override to tell the label provider about uncommitted {@link IApiProfile}s that might have been set to
 	 * be the new default
 	 */
 	class ProfileLabelProvider extends ApiToolsLabelProvider {

 		/* (non-Javadoc)
 		 * @see org.eclipse.pde.api.tools.ui.internal.ApiToolsLabelProvider#isDefaultProfile(java.lang.Object)
 		 */
 		protected boolean isDefaultProfile(Object element) {
 			return isDefault(element);
 		}
 	}

 	private IApiBaselineManager manager = ApiPlugin.getDefault().getApiBaselineManager();

 	private static HashSet removed = new HashSet(8);
 	private CheckboxTableViewer tableviewer = null;
 	private ArrayList backingcollection = new ArrayList(8);
 	private String newdefault = null;
 	private Button newbutton = null,
 				   removebutton = null,
 				   editbutton = null;
 	protected static int rebuildcount = 0;
 	private String origdefault = null;
 	private boolean dirty = false;
 	private boolean needsbuild = false;

 	/**
 	 * The main configuration block for the page
 	 */
 	private ApiBaselinesConfigurationBlock block = null;

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
 	 */
 	protected Control createContents(Composite parent) {
 		Composite comp = SWTFactory.createComposite(parent, 1, 1, GridData.FILL_BOTH, 0, 0);
 		SWTFactory.createWrapLabel(comp, PreferenceMessages.ApiProfilesPreferencePage_0, 2, 200);
 		SWTFactory.createVerticalSpacer(comp, 1);

 		Composite lcomp = SWTFactory.createComposite(comp, 2, 1, GridData.FILL_BOTH, 0, 0);
 		SWTFactory.createWrapLabel(lcomp, PreferenceMessages.ApiProfilesPreferencePage_1, 2);
 		Table table = new Table(lcomp, SWT.FULL_SELECTION | SWT.MULTI | SWT.BORDER | SWT.CHECK);
 		table.setLayoutData(new GridData(GridData.FILL_BOTH));
 		tableviewer = new CheckboxTableViewer(table);
 		tableviewer.setLabelProvider(new ProfileLabelProvider());
 		tableviewer.setContentProvider(new ArrayContentProvider());
 		tableviewer.addDoubleClickListener(new IDoubleClickListener() {
 			public void doubleClick(DoubleClickEvent event) {
 				IStructuredSelection ss = (IStructuredSelection) event.getSelection();
 				doEdit((IApiBaseline) ss.getFirstElement());
 			}
 		});
 		tableviewer.addCheckStateListener(new ICheckStateListener() {
 			public void checkStateChanged(CheckStateChangedEvent event) {
 				IApiBaseline profile = (IApiBaseline) event.getElement();
 				if(event.getChecked()) {
 					tableviewer.setCheckedElements(new Object[] {profile});
 					newdefault = profile.getName();
 				}
 				else {
 					newdefault = null;
 					manager.setDefaultApiBaseline(null);
 				}
 				rebuildcount = 0;
 				tableviewer.refresh(true);
 				dirty = true;
 			}
 		});
 		tableviewer.addSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent event) {
 				IApiBaseline[] state = getCurrentSelection();
 				removebutton.setEnabled(state.length > 0);
 				editbutton.setEnabled(state.length == 1);
 			}
 		});
 		tableviewer.setComparator(new ViewerComparator() {
 			public int compare(Viewer viewer, Object e1, Object e2) {
 				return ((IApiBaseline)e1).getName().compareTo(((IApiBaseline)e2).getName());
 			}
 		});
 		BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
 			public void run() {
 				backingcollection.addAll(Arrays.asList(manager.getApiBaselines()));
 				tableviewer.setInput(backingcollection);
 			}
 		});
 		Composite bcomp = SWTFactory.createComposite(lcomp, 1, 1, GridData.FILL_VERTICAL | GridData.VERTICAL_ALIGN_BEGINNING, 0, 0);
 		newbutton = SWTFactory.createPushButton(bcomp, PreferenceMessages.ApiProfilesPreferencePage_2, null);
 		newbutton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				ApiBaselineWizard wizard = new ApiBaselineWizard(null);
 				WizardDialog dialog = new WizardDialog(ApiUIPlugin.getShell(), wizard);
 				if(dialog.open() == IDialogConstants.OK_ID) {
 					IApiBaseline profile = wizard.getProfile();
 					if(profile != null) {
 						backingcollection.add(profile);
 						tableviewer.refresh();
 						tableviewer.setSelection(new StructuredSelection(profile), true);
 						if(backingcollection.size() == 1) {
 							newdefault = profile.getName();
 							tableviewer.setCheckedElements(new Object[] {profile});
 							tableviewer.refresh(profile);
 						}

 						dirty = true;
 					}
 				}
 			}
 		});
 		editbutton = SWTFactory.createPushButton(bcomp, PreferenceMessages.ApiProfilesPreferencePage_4, null);
 		editbutton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				doEdit((IApiBaseline)getCurrentSelection()[0]);
 			}
 		});
 		editbutton.setEnabled(false);
 		removebutton = SWTFactory.createPushButton(bcomp, PreferenceMessages.ApiProfilesPreferencePage_3, null);
 		removebutton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				IApiBaseline[] states = getCurrentSelection();
 				for(int i = 0; i < states.length; i++) {
 					if(isDefault(states[i])) {
 						newdefault = null;
 						rebuildcount = 0;
 					}
 					removed.add(states[i].getName());
 				}
 				if(backingcollection.removeAll(Arrays.asList(states))) {
 					dirty = true;
 				}
 				tableviewer.refresh();
 			}
 		});
 		removebutton.setEnabled(false);
 		IApiBaseline profile = manager.getDefaultApiBaseline();
 		origdefault = newdefault = (profile == null ? null : profile.getName());
 		initialize();
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(comp, IApiToolsHelpContextIds.APIPROFILES_PREF_PAGE);

 		block = new ApiBaselinesConfigurationBlock((IWorkbenchPreferenceContainer)getContainer());
 		block.createControl(comp, this);
 		SWTFactory.createVerticalSpacer(parent, 1);
 		Dialog.applyDialogFont(comp);
 		return comp;
 	}

 	/**
 	 * Returns if the {@link IApiProfile} with the given name has been removed, but not yet committed back to the manager
 	 * @param name the name of the {@link IApiProfile}
 	 * @return true if the {@link IApiProfile} has been removed from the page, false otherwise
 	 */
 	public static boolean isRemovedBaseline(String name) {
 		return removed.contains(name);
 	}

 	/**
 	 * Performs the edit operation for the edit button and the double click listener for the table
 	 * @param profile
 	 */
 	protected void doEdit(final IApiBaseline profile) {
 		ApiBaselineWizard wizard = new ApiBaselineWizard(profile);
 		WizardDialog dialog = new WizardDialog(ApiUIPlugin.getShell(), wizard);
 		if(dialog.open() == IDialogConstants.OK_ID) {
 			IApiBaseline newprofile = wizard.getProfile();
 			if(newprofile != null) {
 				//clear any pending edit updates
 				removed.add(profile.getName());
 				backingcollection.remove(profile);
 				backingcollection.add(newprofile);
 				tableviewer.refresh();
 				if(isDefault(profile)) {
 					tableviewer.setCheckedElements(new Object[] {newprofile});
 					tableviewer.setSelection(new StructuredSelection(newprofile), true);
 					newdefault = newprofile.getName();
 					rebuildcount = 0;
 					needsbuild = true;
 					tableviewer.refresh(true);
 				}
 				dirty = true;
 			}
 		}
 	}

 	/**
 	 * updates the buttons on the page
 	 */
 	protected void initialize() {
 		IApiBaseline def = ApiPlugin.getDefault().getApiBaselineManager().getDefaultApiBaseline();
 		if(def != null) {
 			tableviewer.setCheckedElements(new Object[] {def});
 		}
 	}

 	/**
 	 * Returns if the specified {@link IApiProfile} is the default profile or not
 	 * @param element
 	 * @return if the profile is the default or not
 	 */
 	protected boolean isDefault(Object element) {
 		if(element instanceof IApiBaseline) {
 			IApiBaseline profile = (IApiBaseline) element;
 			if(newdefault == null) {
 				IApiBaseline def = ApiPlugin.getDefault().getApiBaselineManager().getDefaultApiBaseline();
 				if(def != null) {
 					return profile.getName().equals(def.getName());
 				}
 			}
 			else {
 				return profile.getName().equals(newdefault);
 			}
 		}
 		return false;
 	}

 	/**
 	 * @return the current selection from the table viewer
 	 */
 	protected IApiBaseline[] getCurrentSelection() {
 		IStructuredSelection ss = (IStructuredSelection) tableviewer.getSelection();
 		if(ss.isEmpty()) {
 			return new IApiBaseline[0];
 		}
 		return (IApiBaseline[]) ((IStructuredSelection) tableviewer.getSelection()).toList().toArray(new IApiBaseline[ss.size()]);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
 	 */
 	public void init(IWorkbench workbench) {}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.preference.PreferencePage#performCancel()
 	 */
 	public boolean performCancel() {
 		manager.setDefaultApiBaseline(origdefault);
 		backingcollection.clear();
 		removed.clear();
 		if(this.block != null) {
 			this.block.performCancel();
 		}
 		return super.performCancel();
 	}

 	/**
 	 * Applies the changes from the current change set to the {@link ApiProfileManager}. When done
 	 * the current change set is cleared.
 	 */
 	protected void applyChanges() {
 		if(!dirty) {
 			return;
 		}
 		//remove
 		for(Iterator iter = removed.iterator(); iter.hasNext();) {
 			manager.removeApiBaseline((String) iter.next());
 		}
 		//add the new / changed ones
 		for(Iterator iter = backingcollection.iterator(); iter.hasNext();) {
 			manager.addApiBaseline((IApiBaseline) iter.next());
 		}
 		IApiBaseline def = ApiPlugin.getDefault().getApiBaselineManager().getDefaultApiBaseline();
 		if(def != null && !def.getName().equals(newdefault)) {
 			manager.setDefaultApiBaseline(newdefault);
 			needsbuild = true;
 		}
 		else if(def == null) {
 			manager.setDefaultApiBaseline(newdefault);
 			needsbuild = true;
 		}
 		if(needsbuild) {
 			if(rebuildcount < 1) {
 				rebuildcount++;
 				IProject[] projects = Util.getApiProjects();
 				//do not even ask if there are no projects to build
 				if (projects != null) {
 					if(MessageDialog.openQuestion(getShell(), PreferenceMessages.ApiProfilesPreferencePage_6, PreferenceMessages.ApiProfilesPreferencePage_7)) {
 						Util.getBuildJob(projects).schedule();
 					}
 				}
 			}
 		}
 		origdefault = newdefault;
 		dirty = false;
 		removed.clear();
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.preference.PreferencePage#performOk()
 	 */
 	public boolean performOk() {
 		this.block.performOK();
 		applyChanges();
 		return true;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.preference.PreferencePage#performApply()
 	 */
 	protected void performApply() {
 		this.block.performApply();
 		applyChanges();
 	}
 	protected void performDefaults() {
 		this.block.performDefaults();
 		applyChanges();
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2007, 2008 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.pde.api.tools.ui.internal.preferences;

	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.HashSet;
	import java.util.Iterator;

	import org.eclipse.core.resources.IProject;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.preference.PreferencePage;
	import org.eclipse.jface.viewers.ArrayContentProvider;
	import org.eclipse.jface.viewers.CheckStateChangedEvent;
	import org.eclipse.jface.viewers.CheckboxTableViewer;
	import org.eclipse.jface.viewers.DoubleClickEvent;
	import org.eclipse.jface.viewers.ICheckStateListener;
	import org.eclipse.jface.viewers.IDoubleClickListener;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.viewers.ViewerComparator;
	import org.eclipse.jface.wizard.WizardDialog;
	import org.eclipse.pde.api.tools.internal.provisional.ApiPlugin;
	import org.eclipse.pde.api.tools.internal.provisional.IApiBaselineManager;
	import org.eclipse.pde.api.tools.internal.provisional.model.IApiBaseline;
	import org.eclipse.pde.api.tools.internal.util.Util;
	import org.eclipse.pde.api.tools.ui.internal.ApiToolsLabelProvider;
	import org.eclipse.pde.api.tools.ui.internal.ApiUIPlugin;
	import org.eclipse.pde.api.tools.ui.internal.IApiToolsHelpContextIds;
	import org.eclipse.pde.api.tools.ui.internal.SWTFactory;
	import org.eclipse.pde.api.tools.ui.internal.wizards.ApiBaselineWizard;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.BusyIndicator;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.IWorkbenchPreferencePage;
	import org.eclipse.ui.PlatformUI;
	import org.eclipse.ui.preferences.IWorkbenchPreferenceContainer;

	/**
	* This preference page allows {@link IApiProfile}s to be created/removed/edited
	* @since 1.0.0
	*/
	public class ApiBaselinePreferencePage extends PreferencePage implements IWorkbenchPreferencePage {
	/**
	* Override to tell the label provider about uncommitted {@link IApiProfile}s that might have been set to
	* be the new default
	*/
	class ProfileLabelProvider extends ApiToolsLabelProvider {

	/* (non-Javadoc)
	* @see org.eclipse.pde.api.tools.ui.internal.ApiToolsLabelProvider#isDefaultProfile(java.lang.Object)
	*/
	protected boolean isDefaultProfile(Object element) {
	return isDefault(element);
	}
	}

	private IApiBaselineManager manager = ApiPlugin.getDefault().getApiBaselineManager();

	private static HashSet removed = new HashSet(8);
	private CheckboxTableViewer tableviewer = null;
	private ArrayList backingcollection = new ArrayList(8);
	private String newdefault = null;
	private Button newbutton = null,
	removebutton = null,
	editbutton = null;
	protected static int rebuildcount = 0;
	private String origdefault = null;
	private boolean dirty = false;
	private boolean needsbuild = false;

	/**
	* The main configuration block for the page
	*/
	private ApiBaselinesConfigurationBlock block = null;

	/* (non-Javadoc)
	* @see org.eclipse.jface.preference.PreferencePage#createContents(org.eclipse.swt.widgets.Composite)
	*/
	protected Control createContents(Composite parent) {
	Composite comp = SWTFactory.createComposite(parent, 1, 1, GridData.FILL_BOTH, 0, 0);
	SWTFactory.createWrapLabel(comp, PreferenceMessages.ApiProfilesPreferencePage_0, 2, 200);
	SWTFactory.createVerticalSpacer(comp, 1);

	Composite lcomp = SWTFactory.createComposite(comp, 2, 1, GridData.FILL_BOTH, 0, 0);
	SWTFactory.createWrapLabel(lcomp, PreferenceMessages.ApiProfilesPreferencePage_1, 2);
	Table table = new Table(lcomp, SWT.FULL_SELECTION \| SWT.MULTI \| SWT.BORDER \| SWT.CHECK);
	table.setLayoutData(new GridData(GridData.FILL_BOTH));
	tableviewer = new CheckboxTableViewer(table);
	tableviewer.setLabelProvider(new ProfileLabelProvider());
	tableviewer.setContentProvider(new ArrayContentProvider());
	tableviewer.addDoubleClickListener(new IDoubleClickListener() {
	public void doubleClick(DoubleClickEvent event) {
	IStructuredSelection ss = (IStructuredSelection) event.getSelection();
	doEdit((IApiBaseline) ss.getFirstElement());
	}
	});
	tableviewer.addCheckStateListener(new ICheckStateListener() {
	public void checkStateChanged(CheckStateChangedEvent event) {
	IApiBaseline profile = (IApiBaseline) event.getElement();
	if(event.getChecked()) {
	tableviewer.setCheckedElements(new Object[] {profile});
	newdefault = profile.getName();
	}
	else {
	newdefault = null;
	manager.setDefaultApiBaseline(null);
	}
	rebuildcount = 0;
	tableviewer.refresh(true);
	dirty = true;
	}
	});
	tableviewer.addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	IApiBaseline[] state = getCurrentSelection();
	removebutton.setEnabled(state.length > 0);
	editbutton.setEnabled(state.length == 1);
	}
	});
	tableviewer.setComparator(new ViewerComparator() {
	public int compare(Viewer viewer, Object e1, Object e2) {
	return ((IApiBaseline)e1).getName().compareTo(((IApiBaseline)e2).getName());
	}
	});
	BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
	public void run() {
	backingcollection.addAll(Arrays.asList(manager.getApiBaselines()));
	tableviewer.setInput(backingcollection);
	}
	});
	Composite bcomp = SWTFactory.createComposite(lcomp, 1, 1, GridData.FILL_VERTICAL \| GridData.VERTICAL_ALIGN_BEGINNING, 0, 0);
	newbutton = SWTFactory.createPushButton(bcomp, PreferenceMessages.ApiProfilesPreferencePage_2, null);
	newbutton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	ApiBaselineWizard wizard = new ApiBaselineWizard(null);
	WizardDialog dialog = new WizardDialog(ApiUIPlugin.getShell(), wizard);
	if(dialog.open() == IDialogConstants.OK_ID) {
	IApiBaseline profile = wizard.getProfile();
	if(profile != null) {
	backingcollection.add(profile);
	tableviewer.refresh();
	tableviewer.setSelection(new StructuredSelection(profile), true);
	if(backingcollection.size() == 1) {
	newdefault = profile.getName();
	tableviewer.setCheckedElements(new Object[] {profile});
	tableviewer.refresh(profile);
	}

	dirty = true;
	}
	}
	}
	});
	editbutton = SWTFactory.createPushButton(bcomp, PreferenceMessages.ApiProfilesPreferencePage_4, null);
	editbutton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	doEdit((IApiBaseline)getCurrentSelection()[0]);
	}
	});
	editbutton.setEnabled(false);
	removebutton = SWTFactory.createPushButton(bcomp, PreferenceMessages.ApiProfilesPreferencePage_3, null);
	removebutton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	IApiBaseline[] states = getCurrentSelection();
	for(int i = 0; i < states.length; i++) {
	if(isDefault(states[i])) {
	newdefault = null;
	rebuildcount = 0;
	}
	removed.add(states[i].getName());
	}
	if(backingcollection.removeAll(Arrays.asList(states))) {
	dirty = true;
	}
	tableviewer.refresh();
	}
	});
	removebutton.setEnabled(false);
	IApiBaseline profile = manager.getDefaultApiBaseline();
	origdefault = newdefault = (profile == null ? null : profile.getName());
	initialize();
	PlatformUI.getWorkbench().getHelpSystem().setHelp(comp, IApiToolsHelpContextIds.APIPROFILES_PREF_PAGE);

	block = new ApiBaselinesConfigurationBlock((IWorkbenchPreferenceContainer)getContainer());
	block.createControl(comp, this);
	SWTFactory.createVerticalSpacer(parent, 1);
	Dialog.applyDialogFont(comp);
	return comp;
	}

	/**
	* Returns if the {@link IApiProfile} with the given name has been removed, but not yet committed back to the manager
	* @param name the name of the {@link IApiProfile}
	* @return true if the {@link IApiProfile} has been removed from the page, false otherwise
	*/
	public static boolean isRemovedBaseline(String name) {
	return removed.contains(name);
	}

	/**
	* Performs the edit operation for the edit button and the double click listener for the table
	* @param profile
	*/
	protected void doEdit(final IApiBaseline profile) {
	ApiBaselineWizard wizard = new ApiBaselineWizard(profile);
	WizardDialog dialog = new WizardDialog(ApiUIPlugin.getShell(), wizard);
	if(dialog.open() == IDialogConstants.OK_ID) {
	IApiBaseline newprofile = wizard.getProfile();
	if(newprofile != null) {
	//clear any pending edit updates
	removed.add(profile.getName());
	backingcollection.remove(profile);
	backingcollection.add(newprofile);
	tableviewer.refresh();
	if(isDefault(profile)) {
	tableviewer.setCheckedElements(new Object[] {newprofile});
	tableviewer.setSelection(new StructuredSelection(newprofile), true);
	newdefault = newprofile.getName();
	rebuildcount = 0;
	needsbuild = true;
	tableviewer.refresh(true);
	}
	dirty = true;
	}
	}
	}

	/**
	* updates the buttons on the page
	*/
	protected void initialize() {
	IApiBaseline def = ApiPlugin.getDefault().getApiBaselineManager().getDefaultApiBaseline();
	if(def != null) {
	tableviewer.setCheckedElements(new Object[] {def});
	}
	}

	/**
	* Returns if the specified {@link IApiProfile} is the default profile or not
	* @param element
	* @return if the profile is the default or not
	*/
	protected boolean isDefault(Object element) {
	if(element instanceof IApiBaseline) {
	IApiBaseline profile = (IApiBaseline) element;
	if(newdefault == null) {
	IApiBaseline def = ApiPlugin.getDefault().getApiBaselineManager().getDefaultApiBaseline();
	if(def != null) {
	return profile.getName().equals(def.getName());
	}
	}
	else {
	return profile.getName().equals(newdefault);
	}
	}
	return false;
	}

	/**
	* @return the current selection from the table viewer
	*/
	protected IApiBaseline[] getCurrentSelection() {
	IStructuredSelection ss = (IStructuredSelection) tableviewer.getSelection();
	if(ss.isEmpty()) {
	return new IApiBaseline[0];
	}
	return (IApiBaseline[]) ((IStructuredSelection) tableviewer.getSelection()).toList().toArray(new IApiBaseline[ss.size()]);
	}

	/* (non-Javadoc)
	* @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
	*/
	public void init(IWorkbench workbench) {}

	/* (non-Javadoc)
	* @see org.eclipse.jface.preference.PreferencePage#performCancel()
	*/
	public boolean performCancel() {
	manager.setDefaultApiBaseline(origdefault);
	backingcollection.clear();
	removed.clear();
	if(this.block != null) {
	this.block.performCancel();
	}
	return super.performCancel();
	}

	/**
	* Applies the changes from the current change set to the {@link ApiProfileManager}. When done
	* the current change set is cleared.
	*/
	protected void applyChanges() {
	if(!dirty) {
	return;
	}
	//remove
	for(Iterator iter = removed.iterator(); iter.hasNext();) {
	manager.removeApiBaseline((String) iter.next());
	}
	//add the new / changed ones
	for(Iterator iter = backingcollection.iterator(); iter.hasNext();) {
	manager.addApiBaseline((IApiBaseline) iter.next());
	}
	IApiBaseline def = ApiPlugin.getDefault().getApiBaselineManager().getDefaultApiBaseline();
	if(def != null && !def.getName().equals(newdefault)) {
	manager.setDefaultApiBaseline(newdefault);
	needsbuild = true;
	}
	else if(def == null) {
	manager.setDefaultApiBaseline(newdefault);
	needsbuild = true;
	}
	if(needsbuild) {
	if(rebuildcount < 1) {
	rebuildcount++;
	IProject[] projects = Util.getApiProjects();
	//do not even ask if there are no projects to build
	if (projects != null) {
	if(MessageDialog.openQuestion(getShell(), PreferenceMessages.ApiProfilesPreferencePage_6, PreferenceMessages.ApiProfilesPreferencePage_7)) {
	Util.getBuildJob(projects).schedule();
	}
	}
	}
	}
	origdefault = newdefault;
	dirty = false;
	removed.clear();
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.preference.PreferencePage#performOk()
	*/
	public boolean performOk() {
	this.block.performOK();
	applyChanges();
	return true;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.preference.PreferencePage#performApply()
	*/
	protected void performApply() {
	this.block.performApply();
	applyChanges();
	}
	protected void performDefaults() {
	this.block.performDefaults();
	applyChanges();
	}
	}