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, 2017 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
  *     Manumitting Technologies Inc - bug 466783
  *******************************************************************************/
 package org.eclipse.pde.api.tools.ui.internal.preferences;

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

 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.window.Window;
 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.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.KeyAdapter;
 import org.eclipse.swt.events.KeyEvent;
 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 IApiBaseline}s to be
  * created/removed/edited
  *
  * @since 1.0.0
  * @noextend This class is not intended to be subclassed by clients.
  */
 public class ApiBaselinePreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

 	public static final String DATA_SELECT_OPTION_KEY = "select_option_key"; //$NON-NLS-1$
 	public static final String MISSING_BASELINE_OPTION = "MISSING_BASELINE_OPTION"; //$NON-NLS-1$
 	public static final String ID = "org.eclipse.pde.api.tools.ui.apiprofiles.prefpage"; //$NON-NLS-1$

 	/**
 	 * Override to tell the label provider about uncommitted {@link IApiProfile}
 	 * s that might have been set to be the new default
 	 */
 	class BaselineLabelProvider extends ApiToolsLabelProvider {
 		@Override
 		protected boolean isDefaultBaseline(Object element) {
 			return isDefault(element);
 		}
 	}

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

 	private static HashSet<String> removed = new HashSet<String>(8);
 	CheckboxTableViewer tableviewer = null;
 	ArrayList<IApiBaseline> backingcollection = new ArrayList<IApiBaseline>(8);
 	String newdefault = null;
 	private Button newbutton = null;

 	Button removebutton = null;

 	Button editbutton = null;
 	protected static int rebuildcount = 0;
 	String origdefault = null;
 	boolean dirty = false;
 	private boolean defaultcontentchanged = false;
 	boolean defaultchanged = false;

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

 	@Override
 	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));
 		table.addKeyListener(new KeyAdapter() {
 			@Override
 			public void keyReleased(KeyEvent e) {
 				if (e.stateMask == SWT.NONE && e.keyCode == SWT.DEL) {
 					doRemove();
 				}
 			}
 		});
 		tableviewer = new CheckboxTableViewer(table);
 		tableviewer.setLabelProvider(new BaselineLabelProvider());
 		tableviewer.setContentProvider(new ArrayContentProvider());
 		tableviewer.addDoubleClickListener(new IDoubleClickListener() {
 			@Override
 			public void doubleClick(DoubleClickEvent event) {
 				IStructuredSelection ss = (IStructuredSelection) event.getSelection();
 				doEdit((IApiBaseline) ss.getFirstElement());
 			}
 		});
 		tableviewer.addSelectionChangedListener(new ISelectionChangedListener() {
 			@Override
 			public void selectionChanged(SelectionChangedEvent event) {
 				IApiBaseline[] state = getCurrentSelection();
 				removebutton.setEnabled(state.length > 0);
 				editbutton.setEnabled(state.length == 1);
 			}
 		});
 		tableviewer.addCheckStateListener(new ICheckStateListener() {
 			@Override
 			public void checkStateChanged(CheckStateChangedEvent event) {
 				IApiBaseline baseline = (IApiBaseline) event.getElement();
 				boolean checked = event.getChecked();
 				if (checked) {
 					tableviewer.setCheckedElements(new Object[] { baseline });
 					newdefault = baseline.getName();
 					defaultchanged = !newdefault.equals(origdefault);
 				} else {
 					tableviewer.setChecked(baseline, checked);
 					newdefault = null;
 					manager.setDefaultApiBaseline(null);
 					defaultchanged = true;
 				}
 				rebuildcount = 0;
 				tableviewer.refresh(true);
 				dirty = true;
 			}
 		});
 		tableviewer.setComparator(new ViewerComparator() {
 			@Override
 			public int compare(Viewer viewer, Object e1, Object e2) {
 				return ((IApiBaseline) e1).getName().compareTo(((IApiBaseline) e2).getName());
 			}
 		});
 		BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
 			@Override
 			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() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				ApiBaselineWizard wizard = new ApiBaselineWizard(null);
 				WizardDialog dialog = new WizardDialog(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);
 							defaultchanged = true;
 							rebuildcount = 0;
 						}
 						dirty = true;
 					}
 				}
 			}
 		});
 		editbutton = SWTFactory.createPushButton(bcomp, PreferenceMessages.ApiProfilesPreferencePage_4, null);
 		editbutton.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				doEdit(getCurrentSelection()[0]);
 			}
 		});
 		editbutton.setEnabled(false);
 		removebutton = SWTFactory.createPushButton(bcomp, PreferenceMessages.ApiProfilesPreferencePage_3, null);
 		removebutton.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				doRemove();
 			}
 		});
 		removebutton.setEnabled(false);

 		SWTFactory.createVerticalSpacer(bcomp, 1);

 		IApiBaseline baseline = manager.getDefaultApiBaseline();
 		if (baseline != null) {
 			tableviewer.setCheckedElements(new Object[] { baseline });
 		}
 		origdefault = newdefault = (baseline == null ? null : baseline.getName());
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IApiToolsHelpContextIds.APIBASELINE_PREF_PAGE);

 		block = new ApiBaselinesConfigurationBlock((IWorkbenchPreferenceContainer) getContainer());
 		block.createControl(comp, this);
 		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 remove action, from either the Remove button or from
 	 * pressing the Delete key
 	 */
 	protected void doRemove() {
 		IApiBaseline[] states = getCurrentSelection();
 		for (IApiBaseline state : states) {
 			if (isDefault(state)) {
 				newdefault = null;
 				manager.setDefaultApiBaseline(null);
 				defaultchanged = true;
 				rebuildcount = 0;
 			}
 			removed.add(state.getName());
 		}
 		if (backingcollection.removeAll(Arrays.asList(states))) {
 			dirty = true;
 		}
 		tableviewer.refresh();
 	}

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

 	/**
 	 * 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 = tableviewer.getStructuredSelection();
 		if (ss.isEmpty()) {
 			return new IApiBaseline[0];
 		}
 		return (IApiBaseline[]) tableviewer.getStructuredSelection().toList().toArray(new IApiBaseline[ss.size()]);
 	}

 	@Override
 	public void init(IWorkbench workbench) {
 	}

 	@Override
 	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 (String string : removed) {
 			manager.removeApiBaseline(string);
 		}
 		// add the new / changed ones
 		for (IApiBaseline iApiBaseline : backingcollection) {
 			manager.addApiBaseline(iApiBaseline);
 		}
 		manager.setDefaultApiBaseline(newdefault);
 		if (defaultchanged || defaultcontentchanged) {
 			if (rebuildcount < 1) {
 				rebuildcount++;
 				IProject[] projects = Util.getApiProjects();
 				// do not even ask if there are no projects to build
 				if (projects != null) {
 					int open = MessageDialog.open(MessageDialog.QUESTION, getShell(),
 							PreferenceMessages.ApiProfilesPreferencePage_QuestionDialog_Title,
 							PreferenceMessages.ApiProfilesPreferencePage_QuestionDialog_Text, SWT.NONE,
 							PreferenceMessages.ApiProfilesPreferencePage_QuestionDialog_buildButtonLabel,
 							PreferenceMessages.ApiProfilesPreferencePage_QuestionDialog_dontBuildButtonLabel);
 					if (open == Window.OK) {
 						Util.getBuildJob(projects).schedule();
 					}
 				}
 			}
 		}
 		origdefault = newdefault;
 		dirty = false;
 		defaultcontentchanged = false;
 		defaultchanged = false;
 		removed.clear();
 	}

 	@Override
 	public boolean performOk() {
 		this.block.performOK();
 		applyChanges();
 		return true;
 	}

 	@Override
 	protected void performApply() {
 		this.block.performApply();
 		applyChanges();
 	}

 	@Override
 	protected void performDefaults() {
 		this.block.performDefaults();
 		applyChanges();
 	}
 	@Override
 	public void applyData(Object data) {
 		if (data instanceof Map) {
 			Map<?, ?> pageData = (Map<?, ?>) data;
 			Object key = pageData.get(ApiErrorsWarningsPreferencePage.DATA_SELECT_OPTION_KEY);
 			if (key instanceof String) {
 				String option = (String) key;
 				if (option.equals(ApiBaselinePreferencePage.MISSING_BASELINE_OPTION)) {
 					block.selectOption();
 				}
 			}
 		}
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2007, 2017 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
	* Manumitting Technologies Inc - bug 466783
	*******************************************************************************/
	package org.eclipse.pde.api.tools.ui.internal.preferences;

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

	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.window.Window;
	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.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.KeyAdapter;
	import org.eclipse.swt.events.KeyEvent;
	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 IApiBaseline}s to be
	* created/removed/edited
	*
	* @since 1.0.0
	* @noextend This class is not intended to be subclassed by clients.
	*/
	public class ApiBaselinePreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

	public static final String DATA_SELECT_OPTION_KEY = "select_option_key"; //$NON-NLS-1$
	public static final String MISSING_BASELINE_OPTION = "MISSING_BASELINE_OPTION"; //$NON-NLS-1$
	public static final String ID = "org.eclipse.pde.api.tools.ui.apiprofiles.prefpage"; //$NON-NLS-1$

	/**
	* Override to tell the label provider about uncommitted {@link IApiProfile}
	* s that might have been set to be the new default
	*/
	class BaselineLabelProvider extends ApiToolsLabelProvider {
	@Override
	protected boolean isDefaultBaseline(Object element) {
	return isDefault(element);
	}
	}

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

	private static HashSet<String> removed = new HashSet<String>(8);
	CheckboxTableViewer tableviewer = null;
	ArrayList<IApiBaseline> backingcollection = new ArrayList<IApiBaseline>(8);
	String newdefault = null;
	private Button newbutton = null;

	Button removebutton = null;

	Button editbutton = null;
	protected static int rebuildcount = 0;
	String origdefault = null;
	boolean dirty = false;
	private boolean defaultcontentchanged = false;
	boolean defaultchanged = false;

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

	@Override
	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));
	table.addKeyListener(new KeyAdapter() {
	@Override
	public void keyReleased(KeyEvent e) {
	if (e.stateMask == SWT.NONE && e.keyCode == SWT.DEL) {
	doRemove();
	}
	}
	});
	tableviewer = new CheckboxTableViewer(table);
	tableviewer.setLabelProvider(new BaselineLabelProvider());
	tableviewer.setContentProvider(new ArrayContentProvider());
	tableviewer.addDoubleClickListener(new IDoubleClickListener() {
	@Override
	public void doubleClick(DoubleClickEvent event) {
	IStructuredSelection ss = (IStructuredSelection) event.getSelection();
	doEdit((IApiBaseline) ss.getFirstElement());
	}
	});
	tableviewer.addSelectionChangedListener(new ISelectionChangedListener() {
	@Override
	public void selectionChanged(SelectionChangedEvent event) {
	IApiBaseline[] state = getCurrentSelection();
	removebutton.setEnabled(state.length > 0);
	editbutton.setEnabled(state.length == 1);
	}
	});
	tableviewer.addCheckStateListener(new ICheckStateListener() {
	@Override
	public void checkStateChanged(CheckStateChangedEvent event) {
	IApiBaseline baseline = (IApiBaseline) event.getElement();
	boolean checked = event.getChecked();
	if (checked) {
	tableviewer.setCheckedElements(new Object[] { baseline });
	newdefault = baseline.getName();
	defaultchanged = !newdefault.equals(origdefault);
	} else {
	tableviewer.setChecked(baseline, checked);
	newdefault = null;
	manager.setDefaultApiBaseline(null);
	defaultchanged = true;
	}
	rebuildcount = 0;
	tableviewer.refresh(true);
	dirty = true;
	}
	});
	tableviewer.setComparator(new ViewerComparator() {
	@Override
	public int compare(Viewer viewer, Object e1, Object e2) {
	return ((IApiBaseline) e1).getName().compareTo(((IApiBaseline) e2).getName());
	}
	});
	BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
	@Override
	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() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	ApiBaselineWizard wizard = new ApiBaselineWizard(null);
	WizardDialog dialog = new WizardDialog(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);
	defaultchanged = true;
	rebuildcount = 0;
	}
	dirty = true;
	}
	}
	}
	});
	editbutton = SWTFactory.createPushButton(bcomp, PreferenceMessages.ApiProfilesPreferencePage_4, null);
	editbutton.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	doEdit(getCurrentSelection()[0]);
	}
	});
	editbutton.setEnabled(false);
	removebutton = SWTFactory.createPushButton(bcomp, PreferenceMessages.ApiProfilesPreferencePage_3, null);
	removebutton.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	doRemove();
	}
	});
	removebutton.setEnabled(false);

	SWTFactory.createVerticalSpacer(bcomp, 1);

	IApiBaseline baseline = manager.getDefaultApiBaseline();
	if (baseline != null) {
	tableviewer.setCheckedElements(new Object[] { baseline });
	}
	origdefault = newdefault = (baseline == null ? null : baseline.getName());
	PlatformUI.getWorkbench().getHelpSystem().setHelp(parent, IApiToolsHelpContextIds.APIBASELINE_PREF_PAGE);

	block = new ApiBaselinesConfigurationBlock((IWorkbenchPreferenceContainer) getContainer());
	block.createControl(comp, this);
	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 remove action, from either the Remove button or from
	* pressing the Delete key
	*/
	protected void doRemove() {
	IApiBaseline[] states = getCurrentSelection();
	for (IApiBaseline state : states) {
	if (isDefault(state)) {
	newdefault = null;
	manager.setDefaultApiBaseline(null);
	defaultchanged = true;
	rebuildcount = 0;
	}
	removed.add(state.getName());
	}
	if (backingcollection.removeAll(Arrays.asList(states))) {
	dirty = true;
	}
	tableviewer.refresh();
	}

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

	/**
	* 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 = tableviewer.getStructuredSelection();
	if (ss.isEmpty()) {
	return new IApiBaseline[0];
	}
	return (IApiBaseline[]) tableviewer.getStructuredSelection().toList().toArray(new IApiBaseline[ss.size()]);
	}

	@Override
	public void init(IWorkbench workbench) {
	}

	@Override
	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 (String string : removed) {
	manager.removeApiBaseline(string);
	}
	// add the new / changed ones
	for (IApiBaseline iApiBaseline : backingcollection) {
	manager.addApiBaseline(iApiBaseline);
	}
	manager.setDefaultApiBaseline(newdefault);
	if (defaultchanged \|\| defaultcontentchanged) {
	if (rebuildcount < 1) {
	rebuildcount++;
	IProject[] projects = Util.getApiProjects();
	// do not even ask if there are no projects to build
	if (projects != null) {
	int open = MessageDialog.open(MessageDialog.QUESTION, getShell(),
	PreferenceMessages.ApiProfilesPreferencePage_QuestionDialog_Title,
	PreferenceMessages.ApiProfilesPreferencePage_QuestionDialog_Text, SWT.NONE,
	PreferenceMessages.ApiProfilesPreferencePage_QuestionDialog_buildButtonLabel,
	PreferenceMessages.ApiProfilesPreferencePage_QuestionDialog_dontBuildButtonLabel);
	if (open == Window.OK) {
	Util.getBuildJob(projects).schedule();
	}
	}
	}
	}
	origdefault = newdefault;
	dirty = false;
	defaultcontentchanged = false;
	defaultchanged = false;
	removed.clear();
	}

	@Override
	public boolean performOk() {
	this.block.performOK();
	applyChanges();
	return true;
	}

	@Override
	protected void performApply() {
	this.block.performApply();
	applyChanges();
	}

	@Override
	protected void performDefaults() {
	this.block.performDefaults();
	applyChanges();
	}
	@Override
	public void applyData(Object data) {
	if (data instanceof Map) {
	Map<?, ?> pageData = (Map<?, ?>) data;
	Object key = pageData.get(ApiErrorsWarningsPreferencePage.DATA_SELECT_OPTION_KEY);
	if (key instanceof String) {
	String option = (String) key;
	if (option.equals(ApiBaselinePreferencePage.MISSING_BASELINE_OPTION)) {
	block.selectOption();
	}
	}
	}
	}

	}