org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/preferences/LaunchHistoryPreferenceTab.java - gerrit/platform/eclipse.platform.debug - Git at Google

 package org.eclipse.debug.internal.ui.preferences;

 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved.
  */

 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.debug.core.DebugPlugin;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.internal.ui.DebugUIPlugin;
 import org.eclipse.debug.internal.ui.SWTUtil;
 import org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsMessages;
 import org.eclipse.debug.ui.DebugUITools;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredContentProvider;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.dialogs.ListSelectionDialog;
 import org.eclipse.ui.model.WorkbenchViewerSorter;

 /**
  * Tab for favorite and recent history lists
  */
 public abstract class LaunchHistoryPreferenceTab {

 	/**
 	 * Table of favorite launch configurations
 	 */
 	private TableViewer fFavoritesTable;

 	/**
 	 * Table of recent launch configurations
 	 */
 	private TableViewer fRecentTable;

 	/**
 	 * Favorite Buttons
 	 */
 	private Button fRemoveFavoritesButton;
 	private Button fMoveUpButton;
 	private Button fMoveDownButton;

 	/**
 	 * Recent Buttons
 	 */
 	private Button fAddToFavoritesButton;
 	private Button fRemoveRecentButton;

 	/**
 	 * Current collection of favorites and recent launch configs
 	 */
 	private List fFavorites;
 	private List fRecents;

 	/**
 	 * Creates the control for this tab
 	 */
 	protected Control createControl(Composite parent) {
 		Composite topComp = new Composite(parent, SWT.NULL);
 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		topComp.setLayout(layout);

 		Label favoritesLabel = new Label(topComp, SWT.LEFT);
 		favoritesLabel.setText(getFavoritesLabel());
 		GridData gd = new GridData();
 		gd.horizontalSpan = 2;
 		favoritesLabel.setLayoutData(gd);

 		setFavoritesTable(new TableViewer(topComp, SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION));
 		getFavoritesTable().setContentProvider(new FavoritesContentProvider());
 		getFavoritesTable().setLabelProvider(DebugUITools.newDebugModelPresentation());
 		getFavoritesTable().addSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent evt) {
 				handleFavoriteSelectionChanged();
 			}
 		});
 		gd = new GridData(GridData.FILL_BOTH);
 		getFavoritesTable().getTable().setLayoutData(gd);
 		getFavoritesTable().setInput(DebugUIPlugin.getDefault());

 		Composite buttonComp = new Composite(topComp, SWT.NONE);
 		gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING);
 		buttonComp.setLayoutData(gd);
 		layout = new GridLayout();
 		layout.numColumns = 1;
 		buttonComp.setLayout(layout);

 		Button addFav = new Button(buttonComp, SWT.PUSH);
 		addFav.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Add_&Config_1")); //$NON-NLS-1$
 		addFav.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent evt) {
 				handleAddFavoriteButtonSelected();
 			}
 		});
 		gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL);
 		addFav.setLayoutData(gd);
 		SWTUtil.setButtonDimensionHint(addFav);

 		fRemoveFavoritesButton = new Button(buttonComp, SWT.PUSH);
 		fRemoveFavoritesButton.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Re&move_2")); //$NON-NLS-1$
 		fRemoveFavoritesButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent evt) {
 				handleRemoveFavoriteButtonSelected();
 			}
 		});
 		gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL);
 		fRemoveFavoritesButton.setLayoutData(gd);
 		SWTUtil.setButtonDimensionHint(fRemoveFavoritesButton);
 		fRemoveFavoritesButton.setEnabled(false);

 		fMoveUpButton = new Button(buttonComp, SWT.PUSH);
 		fMoveUpButton.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.U&p_3")); //$NON-NLS-1$
 		fMoveUpButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent evt) {
 				handleMoveUpButtonSelected();
 			}
 		});
 		gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL);
 		fMoveUpButton.setLayoutData(gd);
 		SWTUtil.setButtonDimensionHint(fMoveUpButton);
 		fMoveUpButton.setEnabled(false);

 		fMoveDownButton = new Button(buttonComp, SWT.PUSH);
 		fMoveDownButton.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Do&wn_4")); //$NON-NLS-1$
 		fMoveDownButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent evt) {
 				handleMoveDownButtonSelected();
 			}
 		});
 		gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL);
 		fMoveDownButton.setLayoutData(gd);
 		SWTUtil.setButtonDimensionHint(fMoveDownButton);
 		fMoveDownButton.setEnabled(false);

 		createSpacer(topComp, 1);

 		Label recent = new Label(topComp, SWT.LEFT);
 		recent.setText(getRecentLabel());
 		gd = new GridData();
 		gd.horizontalSpan = 2;
 		recent.setLayoutData(gd);

 		setRecentTable(new TableViewer(topComp, SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION));
 		getRecentTable().setContentProvider(new RecentContentProvider());
 		getRecentTable().setLabelProvider(DebugUITools.newDebugModelPresentation());
 		getRecentTable().addSelectionChangedListener(new ISelectionChangedListener() {
 			public void selectionChanged(SelectionChangedEvent evt) {
 				handleRecentSelectionChanged();
 			}
 		});
 		gd = new GridData(GridData.FILL_BOTH);
 		getRecentTable().getTable().setLayoutData(gd);
 		getRecentTable().setInput(DebugUIPlugin.getDefault());

 		buttonComp = new Composite(topComp, SWT.NONE);
 		gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING);
 		buttonComp.setLayoutData(gd);
 		layout = new GridLayout();
 		layout.numColumns = 1;
 		buttonComp.setLayout(layout);

 		fAddToFavoritesButton = new Button(buttonComp, SWT.PUSH);
 		fAddToFavoritesButton.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Make_&Favorite_5")); //$NON-NLS-1$
 		fAddToFavoritesButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent evt) {
 				handleMakeFavoriteButtonSelected();
 			}
 		});
 		gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL);
 		fAddToFavoritesButton.setLayoutData(gd);
 		SWTUtil.setButtonDimensionHint(fAddToFavoritesButton);
 		fAddToFavoritesButton.setEnabled(false);

 		fRemoveRecentButton = new Button(buttonComp, SWT.PUSH);
 		fRemoveRecentButton.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Remo&ve_6")); //$NON-NLS-1$
 		fRemoveRecentButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent evt) {
 				handleRemoveRecentButtonSelected();
 			}
 		});
 		gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL);
 		fRemoveRecentButton.setLayoutData(gd);
 		SWTUtil.setButtonDimensionHint(fRemoveRecentButton);
 		fRemoveRecentButton.setEnabled(false);

 		return topComp;
 	}

 	/**
 	 * @see IWorkbenchPreferencePage#init(IWorkbench)
 	 */
 	public void init(IWorkbench workbench) {
 	}

 	protected void createSpacer(Composite composite, int columnSpan) {
 		Label label = new Label(composite, SWT.NONE);
 		GridData gd = new GridData();
 		gd.horizontalSpan = columnSpan;
 		label.setLayoutData(gd);
 	}

 	/**
 	 * Returns the table of favorite launch configurations.
 	 *
 	 * @return table viewer
 	 */
 	protected TableViewer getFavoritesTable() {
 		return fFavoritesTable;
 	}

 	/**
 	 * Sets the table of favorite launch configurations.
 	 *
 	 * @param favoritesTable table viewer
 	 */
 	private void setFavoritesTable(TableViewer favoritesTable) {
 		fFavoritesTable = favoritesTable;
 	}

 	/**
 	 * The selection in the favorites list has changed
 	 */
 	protected void handleFavoriteSelectionChanged() {
 		IStructuredSelection selection = (IStructuredSelection)getFavoritesTable().getSelection();
 		List favs = getFavorites();
 		boolean notEmpty = !selection.isEmpty();
 		Iterator elements= selection.iterator();
 		boolean first= false;
 		boolean last= false;
 		int lastFav= favs.size() - 1;
 		while (elements.hasNext()) {
 			Object element = (Object) elements.next();
 			if(!first && favs.indexOf(element) == 0) {
 				first= true;
 			}
 			if (!last && favs.indexOf(element) == lastFav) {
 				last= true;
 			}
 		}

 		fRemoveFavoritesButton.setEnabled(notEmpty);
 		fMoveUpButton.setEnabled(notEmpty && !first && (first != last));
 		fMoveDownButton.setEnabled(notEmpty && !last && (first != last));
 	}

 	/**
 	 * Returns the table of recent launch configurations.
 	 *
 	 * @return table viewer
 	 */
 	protected TableViewer getRecentTable() {
 		return fRecentTable;
 	}

 	/**
 	 * Sets the table of recent launch configurations.
 	 *
 	 * @param table table viewer
 	 */
 	private void setRecentTable(TableViewer table) {
 		fRecentTable = table;
 	}

 	/**
 	 * The selection in the recent list has changed
 	 */
 	protected void handleRecentSelectionChanged() {
 		IStructuredSelection selection = (IStructuredSelection)getRecentTable().getSelection();
 		boolean notEmpty = !selection.isEmpty();

 		fRemoveRecentButton.setEnabled(notEmpty);
 		fAddToFavoritesButton.setEnabled(notEmpty);
 	}

 	/**
 	 * The 'add favorites' button has been pressed
 	 */
 	protected void handleAddFavoriteButtonSelected() {


 		ListSelectionDialog dialog = new ListSelectionDialog(fFavoritesTable.getControl().getShell(),
 		 getMode(), new LaunchConfigurationContentProvider(), DebugUITools.newDebugModelPresentation(),
 		 LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Select_Launch_Configurations_7")); //$NON-NLS-1$
 		dialog.open();
 		Object[] selection = dialog.getResult();
 		if (selection != null) {
 			for (int i = 0; i < selection.length; i++) {
 				getFavorites().add(selection[i]);
 				getRecents().remove(selection[i]);
 			}
 		}
 		updateStatus();
 	}

 	/**
 	 * The 'remove favorites' button has been pressed
 	 */
 	protected void handleRemoveFavoriteButtonSelected() {
 		IStructuredSelection sel = (IStructuredSelection)getFavoritesTable().getSelection();
 		Iterator iter = sel.iterator();
 		while (iter.hasNext()) {
 			Object config = iter.next();
 			getFavorites().remove(config);
 		}
 		getFavoritesTable().refresh();
 	}

 	/**
 	 * The 'move up' button has been pressed
 	 */
 	protected void handleMoveUpButtonSelected() {
 		handleMove(-1);
 	}

 	/**
 	 * The 'move down' button has been pressed
 	 */
 	protected void handleMoveDownButtonSelected() {
 		handleMove(1);
 	}

 	protected void handleMove(int direction) {
 		IStructuredSelection sel = (IStructuredSelection)getFavoritesTable().getSelection();
 		List selList= sel.toList();
 		Object[] movedFavs= new Object[getFavorites().size()];
 		int i;
 		for (Iterator favs = selList.iterator(); favs.hasNext();) {
 			Object config = favs.next();
 			i= getFavorites().indexOf(config);
 			movedFavs[i + direction]= config;
 		}

 		getFavorites().removeAll(selList);

 		for (int j = 0; j < movedFavs.length; j++) {
 			Object config = movedFavs[j];
 			if (config != null) {
 				getFavorites().add(j, config);
 			}
 		}

 		getFavoritesTable().refresh();
 		handleFavoriteSelectionChanged();
 	}

 	/**
 	 * The 'remove recent' button has been pressed
 	 */
 	protected void handleRemoveRecentButtonSelected() {
 		IStructuredSelection sel = (IStructuredSelection)getRecentTable().getSelection();
 		Iterator iter = sel.iterator();
 		while (iter.hasNext()) {
 			Object config = iter.next();
 			getRecents().remove(config);
 		}
 		getRecentTable().refresh();
 	}

 	/**
 	 * The 'add recent to favorites' button has been pressed
 	 */
 	protected void handleMakeFavoriteButtonSelected() {
 		IStructuredSelection sel = (IStructuredSelection)getRecentTable().getSelection();
 		Iterator iter = sel.iterator();
 		while (iter.hasNext()) {
 			Object config = iter.next();
 			getFavorites().add(config);
 			getRecents().remove(config);
 		}
 		updateStatus();
 	}

 	/**
 	 * Returns the mode of this page - run or debug.
 	 */
 	protected abstract String getMode();

 	/**
 	 * Returns the label for the favorites table.
 	 */
 	protected abstract String getFavoritesLabel();

 	/**
 	 * Returns the initial content for the favorites list
 	 */
 	protected abstract ILaunchConfiguration[] getInitialFavorites();

 	/**
 	 * Returns the label for the recent launch table.
 	 */
 	protected abstract String getRecentLabel();

 	/**
 	 * Returns the initial content for the recent table
 	 */
 	protected abstract ILaunchConfiguration[] getInitialRecents();

 	/**
 	 * Content provider for favorites table
 	 */
 	protected class FavoritesContentProvider implements IStructuredContentProvider {

 		/**
 		 * @see IStructuredContentProvider#getElements(Object)
 		 */
 		public Object[] getElements(Object inputElement) {
 			return getFavorites().toArray();
 		}

 		/**
 		 * @see IContentProvider#dispose()
 		 */
 		public void dispose() {
 		}

 		/**
 		 * @see IContentProvider#inputChanged(Viewer, Object, Object)
 		 */
 		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 		}

 	}

 	/**
 	 * Content provider for recent table
 	 */
 	protected class RecentContentProvider extends FavoritesContentProvider {

 		/**
 		 * @see IStructuredContentProvider#getElements(Object)
 		 */
 		public Object[] getElements(Object inputElement) {
 			return getRecents().toArray();
 		}

 	}

 	/**
 	 * Content provider for recent table
 	 */
 	protected class LaunchConfigurationContentProvider extends FavoritesContentProvider {

 		/**
 		 * @see IStructuredContentProvider#getElements(Object)
 		 */
 		public Object[] getElements(Object inputElement) {
 			ILaunchConfiguration[] all = null;
 			try {
 				all = DebugPlugin.getDefault().getLaunchManager().getLaunchConfigurations();
 			} catch (CoreException e) {
 				DebugUIPlugin.log(e);
 				return new ILaunchConfiguration[0];
 			}
 			List list = new ArrayList(all.length);
 			String mode = (String)inputElement;
 			for (int i = 0; i < all.length; i++) {
 				try {
 					if (all[i].getType().supportsMode(mode)) {
 						list.add(all[i]);
 					}
 				} catch (CoreException e) {
 					// ignore
 				}
 			}
 			list.removeAll(getFavorites());
 			Object[] objs = list.toArray();
 			new WorkbenchViewerSorter().sort(getFavoritesTable(), objs);
 			return objs;
 		}

 	}

 	/**
 	 * Returns the current list of favorites.
 	 */
 	protected List getFavorites() {
 		if (fFavorites == null) {
 			ILaunchConfiguration[] favs = getInitialFavorites();
 			fFavorites = new ArrayList(favs.length);
 			addAll(favs, fFavorites);
 		}
 		return fFavorites;
 	}

 	/**
 	 * Returns the current list of recents.
 	 */
 	protected List getRecents() {
 		if (fRecents == null) {
 			ILaunchConfiguration[] recent = getInitialRecents();
 			fRecents = new ArrayList(recent.length);
 			addAll(recent, fRecents);
 		}
 		return fRecents;
 	}

 	/**
 	 * Copies the array into the list
 	 */
 	protected void addAll(Object[] array, List list) {
 		for (int i = 0; i < array.length; i++) {
 			list.add(array[i]);
 		}
 	}

 	/**
 	 * Restores defaults
 	 */
 	protected void performDefaults() {
 		fFavorites = null;
 		fRecents = null;
 		updateStatus();
 	}

 	/**
 	 * Refresh all tables and buttons
 	 */
 	protected void updateStatus() {
 		getFavoritesTable().refresh();
 		getRecentTable().refresh();
 		handleFavoriteSelectionChanged();
 		handleRecentSelectionChanged();
 	}
 }
	package org.eclipse.debug.internal.ui.preferences;

	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved.
	*/

	import java.util.ArrayList;
	import java.util.Iterator;
	import java.util.List;

	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.debug.core.DebugPlugin;
	import org.eclipse.debug.core.ILaunchConfiguration;
	import org.eclipse.debug.internal.ui.DebugUIPlugin;
	import org.eclipse.debug.internal.ui.SWTUtil;
	import org.eclipse.debug.internal.ui.launchConfigurations.LaunchConfigurationsMessages;
	import org.eclipse.debug.ui.DebugUITools;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredContentProvider;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.dialogs.ListSelectionDialog;
	import org.eclipse.ui.model.WorkbenchViewerSorter;

	/**
	* Tab for favorite and recent history lists
	*/
	public abstract class LaunchHistoryPreferenceTab {

	/**
	* Table of favorite launch configurations
	*/
	private TableViewer fFavoritesTable;

	/**
	* Table of recent launch configurations
	*/
	private TableViewer fRecentTable;

	/**
	* Favorite Buttons
	*/
	private Button fRemoveFavoritesButton;
	private Button fMoveUpButton;
	private Button fMoveDownButton;

	/**
	* Recent Buttons
	*/
	private Button fAddToFavoritesButton;
	private Button fRemoveRecentButton;

	/**
	* Current collection of favorites and recent launch configs
	*/
	private List fFavorites;
	private List fRecents;

	/**
	* Creates the control for this tab
	*/
	protected Control createControl(Composite parent) {
	Composite topComp = new Composite(parent, SWT.NULL);
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	topComp.setLayout(layout);

	Label favoritesLabel = new Label(topComp, SWT.LEFT);
	favoritesLabel.setText(getFavoritesLabel());
	GridData gd = new GridData();
	gd.horizontalSpan = 2;
	favoritesLabel.setLayoutData(gd);

	setFavoritesTable(new TableViewer(topComp, SWT.MULTI \| SWT.BORDER \| SWT.FULL_SELECTION));
	getFavoritesTable().setContentProvider(new FavoritesContentProvider());
	getFavoritesTable().setLabelProvider(DebugUITools.newDebugModelPresentation());
	getFavoritesTable().addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent evt) {
	handleFavoriteSelectionChanged();
	}
	});
	gd = new GridData(GridData.FILL_BOTH);
	getFavoritesTable().getTable().setLayoutData(gd);
	getFavoritesTable().setInput(DebugUIPlugin.getDefault());

	Composite buttonComp = new Composite(topComp, SWT.NONE);
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING);
	buttonComp.setLayoutData(gd);
	layout = new GridLayout();
	layout.numColumns = 1;
	buttonComp.setLayout(layout);

	Button addFav = new Button(buttonComp, SWT.PUSH);
	addFav.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Add_&Config_1")); //$NON-NLS-1$
	addFav.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	handleAddFavoriteButtonSelected();
	}
	});
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.HORIZONTAL_ALIGN_FILL);
	addFav.setLayoutData(gd);
	SWTUtil.setButtonDimensionHint(addFav);

	fRemoveFavoritesButton = new Button(buttonComp, SWT.PUSH);
	fRemoveFavoritesButton.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Re&move_2")); //$NON-NLS-1$
	fRemoveFavoritesButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	handleRemoveFavoriteButtonSelected();
	}
	});
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.HORIZONTAL_ALIGN_FILL);
	fRemoveFavoritesButton.setLayoutData(gd);
	SWTUtil.setButtonDimensionHint(fRemoveFavoritesButton);
	fRemoveFavoritesButton.setEnabled(false);

	fMoveUpButton = new Button(buttonComp, SWT.PUSH);
	fMoveUpButton.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.U&p_3")); //$NON-NLS-1$
	fMoveUpButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	handleMoveUpButtonSelected();
	}
	});
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.HORIZONTAL_ALIGN_FILL);
	fMoveUpButton.setLayoutData(gd);
	SWTUtil.setButtonDimensionHint(fMoveUpButton);
	fMoveUpButton.setEnabled(false);

	fMoveDownButton = new Button(buttonComp, SWT.PUSH);
	fMoveDownButton.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Do&wn_4")); //$NON-NLS-1$
	fMoveDownButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	handleMoveDownButtonSelected();
	}
	});
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.HORIZONTAL_ALIGN_FILL);
	fMoveDownButton.setLayoutData(gd);
	SWTUtil.setButtonDimensionHint(fMoveDownButton);
	fMoveDownButton.setEnabled(false);

	createSpacer(topComp, 1);

	Label recent = new Label(topComp, SWT.LEFT);
	recent.setText(getRecentLabel());
	gd = new GridData();
	gd.horizontalSpan = 2;
	recent.setLayoutData(gd);

	setRecentTable(new TableViewer(topComp, SWT.MULTI \| SWT.BORDER \| SWT.FULL_SELECTION));
	getRecentTable().setContentProvider(new RecentContentProvider());
	getRecentTable().setLabelProvider(DebugUITools.newDebugModelPresentation());
	getRecentTable().addSelectionChangedListener(new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent evt) {
	handleRecentSelectionChanged();
	}
	});
	gd = new GridData(GridData.FILL_BOTH);
	getRecentTable().getTable().setLayoutData(gd);
	getRecentTable().setInput(DebugUIPlugin.getDefault());

	buttonComp = new Composite(topComp, SWT.NONE);
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING);
	buttonComp.setLayoutData(gd);
	layout = new GridLayout();
	layout.numColumns = 1;
	buttonComp.setLayout(layout);

	fAddToFavoritesButton = new Button(buttonComp, SWT.PUSH);
	fAddToFavoritesButton.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Make_&Favorite_5")); //$NON-NLS-1$
	fAddToFavoritesButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	handleMakeFavoriteButtonSelected();
	}
	});
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.HORIZONTAL_ALIGN_FILL);
	fAddToFavoritesButton.setLayoutData(gd);
	SWTUtil.setButtonDimensionHint(fAddToFavoritesButton);
	fAddToFavoritesButton.setEnabled(false);

	fRemoveRecentButton = new Button(buttonComp, SWT.PUSH);
	fRemoveRecentButton.setText(LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Remo&ve_6")); //$NON-NLS-1$
	fRemoveRecentButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent evt) {
	handleRemoveRecentButtonSelected();
	}
	});
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.HORIZONTAL_ALIGN_FILL);
	fRemoveRecentButton.setLayoutData(gd);
	SWTUtil.setButtonDimensionHint(fRemoveRecentButton);
	fRemoveRecentButton.setEnabled(false);

	return topComp;
	}

	/**
	* @see IWorkbenchPreferencePage#init(IWorkbench)
	*/
	public void init(IWorkbench workbench) {
	}

	protected void createSpacer(Composite composite, int columnSpan) {
	Label label = new Label(composite, SWT.NONE);
	GridData gd = new GridData();
	gd.horizontalSpan = columnSpan;
	label.setLayoutData(gd);
	}

	/**
	* Returns the table of favorite launch configurations.
	*
	* @return table viewer
	*/
	protected TableViewer getFavoritesTable() {
	return fFavoritesTable;
	}

	/**
	* Sets the table of favorite launch configurations.
	*
	* @param favoritesTable table viewer
	*/
	private void setFavoritesTable(TableViewer favoritesTable) {
	fFavoritesTable = favoritesTable;
	}

	/**
	* The selection in the favorites list has changed
	*/
	protected void handleFavoriteSelectionChanged() {
	IStructuredSelection selection = (IStructuredSelection)getFavoritesTable().getSelection();
	List favs = getFavorites();
	boolean notEmpty = !selection.isEmpty();
	Iterator elements= selection.iterator();
	boolean first= false;
	boolean last= false;
	int lastFav= favs.size() - 1;
	while (elements.hasNext()) {
	Object element = (Object) elements.next();
	if(!first && favs.indexOf(element) == 0) {
	first= true;
	}
	if (!last && favs.indexOf(element) == lastFav) {
	last= true;
	}
	}

	fRemoveFavoritesButton.setEnabled(notEmpty);
	fMoveUpButton.setEnabled(notEmpty && !first && (first != last));
	fMoveDownButton.setEnabled(notEmpty && !last && (first != last));
	}

	/**
	* Returns the table of recent launch configurations.
	*
	* @return table viewer
	*/
	protected TableViewer getRecentTable() {
	return fRecentTable;
	}

	/**
	* Sets the table of recent launch configurations.
	*
	* @param table table viewer
	*/
	private void setRecentTable(TableViewer table) {
	fRecentTable = table;
	}

	/**
	* The selection in the recent list has changed
	*/
	protected void handleRecentSelectionChanged() {
	IStructuredSelection selection = (IStructuredSelection)getRecentTable().getSelection();
	boolean notEmpty = !selection.isEmpty();

	fRemoveRecentButton.setEnabled(notEmpty);
	fAddToFavoritesButton.setEnabled(notEmpty);
	}

	/**
	* The 'add favorites' button has been pressed
	*/
	protected void handleAddFavoriteButtonSelected() {


	ListSelectionDialog dialog = new ListSelectionDialog(fFavoritesTable.getControl().getShell(),
	getMode(), new LaunchConfigurationContentProvider(), DebugUITools.newDebugModelPresentation(),
	LaunchConfigurationsMessages.getString("LaunchHistoryPreferenceTab.Select_Launch_Configurations_7")); //$NON-NLS-1$
	dialog.open();
	Object[] selection = dialog.getResult();
	if (selection != null) {
	for (int i = 0; i < selection.length; i++) {
	getFavorites().add(selection[i]);
	getRecents().remove(selection[i]);
	}
	}
	updateStatus();
	}

	/**
	* The 'remove favorites' button has been pressed
	*/
	protected void handleRemoveFavoriteButtonSelected() {
	IStructuredSelection sel = (IStructuredSelection)getFavoritesTable().getSelection();
	Iterator iter = sel.iterator();
	while (iter.hasNext()) {
	Object config = iter.next();
	getFavorites().remove(config);
	}
	getFavoritesTable().refresh();
	}

	/**
	* The 'move up' button has been pressed
	*/
	protected void handleMoveUpButtonSelected() {
	handleMove(-1);
	}

	/**
	* The 'move down' button has been pressed
	*/
	protected void handleMoveDownButtonSelected() {
	handleMove(1);
	}

	protected void handleMove(int direction) {
	IStructuredSelection sel = (IStructuredSelection)getFavoritesTable().getSelection();
	List selList= sel.toList();
	Object[] movedFavs= new Object[getFavorites().size()];
	int i;
	for (Iterator favs = selList.iterator(); favs.hasNext();) {
	Object config = favs.next();
	i= getFavorites().indexOf(config);
	movedFavs[i + direction]= config;
	}

	getFavorites().removeAll(selList);

	for (int j = 0; j < movedFavs.length; j++) {
	Object config = movedFavs[j];
	if (config != null) {
	getFavorites().add(j, config);
	}
	}

	getFavoritesTable().refresh();
	handleFavoriteSelectionChanged();
	}

	/**
	* The 'remove recent' button has been pressed
	*/
	protected void handleRemoveRecentButtonSelected() {
	IStructuredSelection sel = (IStructuredSelection)getRecentTable().getSelection();
	Iterator iter = sel.iterator();
	while (iter.hasNext()) {
	Object config = iter.next();
	getRecents().remove(config);
	}
	getRecentTable().refresh();
	}

	/**
	* The 'add recent to favorites' button has been pressed
	*/
	protected void handleMakeFavoriteButtonSelected() {
	IStructuredSelection sel = (IStructuredSelection)getRecentTable().getSelection();
	Iterator iter = sel.iterator();
	while (iter.hasNext()) {
	Object config = iter.next();
	getFavorites().add(config);
	getRecents().remove(config);
	}
	updateStatus();
	}

	/**
	* Returns the mode of this page - run or debug.
	*/
	protected abstract String getMode();

	/**
	* Returns the label for the favorites table.
	*/
	protected abstract String getFavoritesLabel();

	/**
	* Returns the initial content for the favorites list
	*/
	protected abstract ILaunchConfiguration[] getInitialFavorites();

	/**
	* Returns the label for the recent launch table.
	*/
	protected abstract String getRecentLabel();

	/**
	* Returns the initial content for the recent table
	*/
	protected abstract ILaunchConfiguration[] getInitialRecents();

	/**
	* Content provider for favorites table
	*/
	protected class FavoritesContentProvider implements IStructuredContentProvider {

	/**
	* @see IStructuredContentProvider#getElements(Object)
	*/
	public Object[] getElements(Object inputElement) {
	return getFavorites().toArray();
	}

	/**
	* @see IContentProvider#dispose()
	*/
	public void dispose() {
	}

	/**
	* @see IContentProvider#inputChanged(Viewer, Object, Object)
	*/
	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
	}

	}

	/**
	* Content provider for recent table
	*/
	protected class RecentContentProvider extends FavoritesContentProvider {

	/**
	* @see IStructuredContentProvider#getElements(Object)
	*/
	public Object[] getElements(Object inputElement) {
	return getRecents().toArray();
	}

	}

	/**
	* Content provider for recent table
	*/
	protected class LaunchConfigurationContentProvider extends FavoritesContentProvider {

	/**
	* @see IStructuredContentProvider#getElements(Object)
	*/
	public Object[] getElements(Object inputElement) {
	ILaunchConfiguration[] all = null;
	try {
	all = DebugPlugin.getDefault().getLaunchManager().getLaunchConfigurations();
	} catch (CoreException e) {
	DebugUIPlugin.log(e);
	return new ILaunchConfiguration[0];
	}
	List list = new ArrayList(all.length);
	String mode = (String)inputElement;
	for (int i = 0; i < all.length; i++) {
	try {
	if (all[i].getType().supportsMode(mode)) {
	list.add(all[i]);
	}
	} catch (CoreException e) {
	// ignore
	}
	}
	list.removeAll(getFavorites());
	Object[] objs = list.toArray();
	new WorkbenchViewerSorter().sort(getFavoritesTable(), objs);
	return objs;
	}

	}

	/**
	* Returns the current list of favorites.
	*/
	protected List getFavorites() {
	if (fFavorites == null) {
	ILaunchConfiguration[] favs = getInitialFavorites();
	fFavorites = new ArrayList(favs.length);
	addAll(favs, fFavorites);
	}
	return fFavorites;
	}

	/**
	* Returns the current list of recents.
	*/
	protected List getRecents() {
	if (fRecents == null) {
	ILaunchConfiguration[] recent = getInitialRecents();
	fRecents = new ArrayList(recent.length);
	addAll(recent, fRecents);
	}
	return fRecents;
	}

	/**
	* Copies the array into the list
	*/
	protected void addAll(Object[] array, List list) {
	for (int i = 0; i < array.length; i++) {
	list.add(array[i]);
	}
	}

	/**
	* Restores defaults
	*/
	protected void performDefaults() {
	fFavorites = null;
	fRecents = null;
	updateStatus();
	}

	/**
	* Refresh all tables and buttons
	*/
	protected void updateStatus() {
	getFavoritesTable().refresh();
	getRecentTable().refresh();
	handleFavoriteSelectionChanged();
	handleRecentSelectionChanged();
	}
	}