org.eclipse.jdt.ui/internal compatibility/org/eclipse/jdt/internal/ui/dialogs/TypeSelectionComponent.java - jdt/eclipse.jdt.ui - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2010 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.jdt.internal.ui.dialogs;

 import java.io.IOException;
 import java.io.StringReader;
 import java.io.StringWriter;

 import org.eclipse.swt.SWT;
 import org.eclipse.swt.accessibility.AccessibleAdapter;
 import org.eclipse.swt.accessibility.AccessibleEvent;
 import org.eclipse.swt.custom.CLabel;
 import org.eclipse.swt.custom.ViewForm;
 import org.eclipse.swt.events.DisposeEvent;
 import org.eclipse.swt.events.DisposeListener;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.events.KeyListener;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 import org.eclipse.swt.events.TraverseEvent;
 import org.eclipse.swt.events.TraverseListener;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.Rectangle;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Menu;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.swt.widgets.ToolBar;
 import org.eclipse.swt.widgets.ToolItem;

 import org.eclipse.jface.action.Action;
 import org.eclipse.jface.action.IAction;
 import org.eclipse.jface.action.IMenuManager;
 import org.eclipse.jface.action.MenuManager;
 import org.eclipse.jface.dialogs.DialogSettings;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.util.IPropertyChangeListener;
 import org.eclipse.jface.util.PropertyChangeEvent;

 import org.eclipse.ui.IMemento;
 import org.eclipse.ui.IWorkingSet;
 import org.eclipse.ui.WorkbenchException;
 import org.eclipse.ui.XMLMemento;

 import org.eclipse.jdt.core.search.IJavaSearchScope;
 import org.eclipse.jdt.core.search.SearchEngine;
 import org.eclipse.jdt.core.search.TypeNameMatch;

 import org.eclipse.jdt.internal.corext.util.Strings;

 import org.eclipse.jdt.ui.dialogs.ITypeSelectionComponent;
 import org.eclipse.jdt.ui.dialogs.TypeSelectionExtension;

 import org.eclipse.jdt.internal.ui.JavaPlugin;
 import org.eclipse.jdt.internal.ui.JavaPluginImages;
 import org.eclipse.jdt.internal.ui.JavaUIMessages;
 import org.eclipse.jdt.internal.ui.search.JavaSearchScopeFactory;
 import org.eclipse.jdt.internal.ui.util.PixelConverter;
 import org.eclipse.jdt.internal.ui.util.SWTUtil;
 import org.eclipse.jdt.internal.ui.util.TypeNameMatchLabelProvider;
 import org.eclipse.jdt.internal.ui.workingsets.WorkingSetFilterActionGroup;


 /**
  * DO NOT REMOVE, used in a product.
  * @deprecated As of 3.5, replaced by {@link org.eclipse.ui.dialogs.FilteredItemsSelectionDialog}
  */
 public class TypeSelectionComponent extends Composite implements ITypeSelectionComponent {

 	private IDialogSettings fSettings;
 	private boolean fMultipleSelection;
 	private ITitleLabel fTitleLabel;

 	private ToolBar fToolBar;
 	private ToolItem fToolItem;
 	private MenuManager fMenuManager;
 	private WorkingSetFilterActionGroup fFilterActionGroup;

 	private TypeSelectionExtension fTypeSelectionExtension;
 	private Text fFilter;
 	private String fInitialFilterText;
 	private IJavaSearchScope fScope;
 	private TypeInfoViewer fViewer;
 	private ViewForm fForm;
 	private CLabel fLabel;

 	public static final int NONE= 0;
 	public static final int CARET_BEGINNING= 1;
 	public static final int FULL_SELECTION= 2;

 	private static final String DIALOG_SETTINGS= "org.eclipse.jdt.internal.ui.dialogs.TypeSelectionComponent"; //$NON-NLS-1$
 	private static final String SHOW_STATUS_LINE= "show_status_line"; //$NON-NLS-1$
 	private static final String FULLY_QUALIFY_DUPLICATES= "fully_qualify_duplicates"; //$NON-NLS-1$
 	private static final String WORKINGS_SET_SETTINGS= "workingset_settings"; //$NON-NLS-1$

 	private class ToggleStatusLineAction extends Action {
 		public ToggleStatusLineAction() {
 			super(JavaUIMessages.TypeSelectionComponent_show_status_line_label, IAction.AS_CHECK_BOX);
 		}
 		@Override
 		public void run() {
 			if (fForm == null)
 				return;
 			GridData gd= (GridData)fForm.getLayoutData();
 			boolean checked= isChecked();
 			gd.exclude= !checked;
 			fForm.setVisible(checked);
 			fSettings.put(SHOW_STATUS_LINE, checked);
 			TypeSelectionComponent.this.layout();
 		}
 	}

 	private class FullyQualifyDuplicatesAction extends Action {
 		public FullyQualifyDuplicatesAction() {
 			super(JavaUIMessages.TypeSelectionComponent_fully_qualify_duplicates_label, IAction.AS_CHECK_BOX);
 		}
 		@Override
 		public void run() {
 			boolean checked= isChecked();
 			fViewer.setFullyQualifyDuplicates(checked, true);
 			fSettings.put(FULLY_QUALIFY_DUPLICATES, checked);
 		}
 	}

 	/**
 	 * Special interface to access a title lable in
 	 * a generic fashion.
 	 */
 	public interface ITitleLabel {
 		/**
 		 * Sets the title to the given text
 		 *
 		 * @param text the title text
 		 */
 		public void setText(String text);
 	}

 	public TypeSelectionComponent(Composite parent, int style, String message, boolean multi,
 			IJavaSearchScope scope, int elementKind, String initialFilter, ITitleLabel titleLabel,
 			TypeSelectionExtension extension) {
 		super(parent, style);
 		setFont(parent.getFont());
 		fMultipleSelection= multi;
 		fScope= scope;
 		fInitialFilterText= initialFilter;
 		fTitleLabel= titleLabel;
 		fTypeSelectionExtension= extension;
 		IDialogSettings settings= JavaPlugin.getDefault().getDialogSettings();
 		fSettings= settings.getSection(DIALOG_SETTINGS);
 		if (fSettings == null) {
 			fSettings= new DialogSettings(DIALOG_SETTINGS);
 			settings.addSection(fSettings);
 		}
 		if (fSettings.get(SHOW_STATUS_LINE) == null) {
 			fSettings.put(SHOW_STATUS_LINE, true);
 		}
 		createContent(message, elementKind);
 	}

 	public void triggerSearch() {
 		fViewer.forceSearch();
 	}

 	public TypeNameMatch[] getSelection() {
 		return fViewer.getSelection();
 	}

 	public IJavaSearchScope getScope() {
 		return fScope;
 	}

 	private void createContent(final String message, int elementKind) {
 		GridLayout layout= new GridLayout();
 		layout.numColumns= 2;
 		layout.marginWidth= 0; layout.marginHeight= 0;
 		setLayout(layout);
 		Font font= getFont();

 		Control header= createHeader(this, font, message);
 		GridData gd= new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan= 2;
 		header.setLayoutData(gd);

 		fFilter= new Text(this, SWT.BORDER | SWT.FLAT);
 		fFilter.setFont(font);
 		if (fInitialFilterText != null) {
 			fFilter.setText(fInitialFilterText);
 		}
 		gd= new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan= 2;
 		fFilter.setLayoutData(gd);
 		fFilter.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				patternChanged((Text)e.widget);
 			}
 		});
 		fFilter.addKeyListener(new KeyListener() {
 			public void keyReleased(KeyEvent e) {
 			}
 			public void keyPressed(KeyEvent e) {
 				if (e.keyCode == SWT.ARROW_DOWN) {
 					fViewer.setFocus();
 				}
 			}
 		});
 		fFilter.getAccessible().addAccessibleListener(new AccessibleAdapter() {
 			@Override
 			public void getName(AccessibleEvent e) {
 				e.result= Strings.removeMnemonicIndicator(message);
 			}
 		});
 		TextFieldNavigationHandler.install(fFilter);

 		Label label= new Label(this, SWT.NONE);
 		label.setFont(font);
 		label.setText(JavaUIMessages.TypeSelectionComponent_label);
 		label.addTraverseListener(new TraverseListener() {
 			public void keyTraversed(TraverseEvent e) {
 				if (e.detail == SWT.TRAVERSE_MNEMONIC && e.doit) {
 					e.detail= SWT.TRAVERSE_NONE;
 					fViewer.setFocus();
 				}
 			}
 		});
 		label= new Label(this, SWT.RIGHT);
 		label.setFont(font);
 		gd= new GridData(GridData.FILL_HORIZONTAL);
 		label.setLayoutData(gd);
 		fViewer= new TypeInfoViewer(this, fMultipleSelection ? SWT.MULTI : SWT.NONE, label,
 			fScope, elementKind, fInitialFilterText,
 			fTypeSelectionExtension != null ? fTypeSelectionExtension.getFilterExtension() : null,
 			fTypeSelectionExtension != null ? fTypeSelectionExtension.getImageProvider() : null);
 		gd= new GridData(GridData.FILL_BOTH);
 		final Table table= fViewer.getTable();
 		PixelConverter converter= new PixelConverter(table);
 		gd.widthHint= converter.convertWidthInCharsToPixels(70);
 		gd.heightHint= SWTUtil.getTableHeightHint(table, 10);
 		gd.horizontalSpan= 2;
 		table.setLayoutData(gd);
 		table.getAccessible().addAccessibleListener(new AccessibleAdapter() {
 			@Override
 			public void getName(AccessibleEvent e) {
 				if (table.getSelectionCount() == 0) {
 					e.result= Strings.removeMnemonicIndicator(JavaUIMessages.TypeSelectionComponent_label);
 				}
 			}
 		});
 		fViewer.setFullyQualifyDuplicates(fSettings.getBoolean(FULLY_QUALIFY_DUPLICATES), false);
 		if (fTypeSelectionExtension != null) {
 			Control addition= fTypeSelectionExtension.createContentArea(this);
 			if (addition != null) {
 				addition.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 			}
 		}
 		if (!fMultipleSelection) {
 			fForm= new ViewForm(this, SWT.BORDER | SWT.FLAT);
 			fForm.setFont(font);
 			gd= new GridData(GridData.FILL_HORIZONTAL);
 			gd.horizontalSpan= 2;
 			boolean showStatusLine= fSettings.getBoolean(SHOW_STATUS_LINE);
 			gd.exclude= !showStatusLine;
 			fForm.setVisible(showStatusLine);
 			fForm.setLayoutData(gd);
 			fLabel= new CLabel(fForm, SWT.FLAT);
 			fLabel.setFont(fForm.getFont());
 			fForm.setContent(fLabel);
 			table.addSelectionListener(new SelectionAdapter() {
 				private TypeNameMatchLabelProvider fLabelProvider= new TypeNameMatchLabelProvider(
 					TypeNameMatchLabelProvider.SHOW_TYPE_CONTAINER_ONLY + TypeNameMatchLabelProvider.SHOW_ROOT_POSTFIX);
 				@Override
 				public void widgetSelected(SelectionEvent event) {
 					TypeNameMatch[] selection= fViewer.getSelection();
 					if (selection.length != 1) {
 						fLabel.setText(""); //$NON-NLS-1$
 						fLabel.setImage(null);
 					} else {
 						TypeNameMatch type= selection[0];
 						fLabel.setText(fViewer.getLabelProvider().getQualificationText(type));
 						fLabel.setImage(fLabelProvider.getImage(type));
 					}
 				}
 			});
 		}
 		addDisposeListener(new DisposeListener() {
 			public void widgetDisposed(DisposeEvent event) {
 				disposeComponent();
 			}
 		});
 		if (fTypeSelectionExtension != null) {
 			fTypeSelectionExtension.initialize(this);
 		}
 	}

 	public void addSelectionListener(SelectionListener listener) {
 		fViewer.getTable().addSelectionListener(listener);
 	}

 	public void populate(int selectionMode) {
 		if (fInitialFilterText != null) {
 			switch(selectionMode) {
 				case CARET_BEGINNING:
 					fFilter.setSelection(0, 0);
 					break;
 				case FULL_SELECTION:
 					fFilter.setSelection(0, fInitialFilterText.length());
 					break;
 			}
 		}
 		fFilter.setFocus();
 		fViewer.startup();
 	}

 	private void patternChanged(Text text) {
 		fViewer.setSearchPattern(text.getText());
 	}

 	private Control createHeader(Composite parent, Font font, String message) {
 		Composite header= new Composite(parent, SWT.NONE);
 		GridLayout layout= new GridLayout();
 		layout.numColumns= 2;
 		layout.marginWidth= 0; layout.marginHeight= 0;
 		header.setLayout(layout);
 		header.setFont(font);
 		Label label= new Label(header, SWT.NONE);
 		label.setText(message);
 		label.setFont(font);
 		label.addTraverseListener(new TraverseListener() {
 			public void keyTraversed(TraverseEvent e) {
 				if (e.detail == SWT.TRAVERSE_MNEMONIC && e.doit) {
 					e.detail= SWT.TRAVERSE_NONE;
 					fFilter.setFocus();
 				}
 			}
 		});
 		GridData gd= new GridData(GridData.FILL_HORIZONTAL);
 		label.setLayoutData(gd);

 		createViewMenu(header);
 		return header;
 	}

 	private void createViewMenu(Composite parent) {
 		fToolBar= new ToolBar(parent, SWT.FLAT);
 		fToolItem= new ToolItem(fToolBar, SWT.PUSH, 0);

 		GridData data= new GridData();
 		data.horizontalAlignment= GridData.END;
 		fToolBar.setLayoutData(data);

 		fToolItem.setImage(JavaPluginImages.get(JavaPluginImages.IMG_ELCL_VIEW_MENU));
 		fToolItem.setDisabledImage(JavaPluginImages.get(JavaPluginImages.IMG_DLCL_VIEW_MENU));
 		fToolItem.setToolTipText(JavaUIMessages.TypeSelectionComponent_menu);
 		fToolItem.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				showViewMenu();
 			}
 		});

 		fMenuManager= new MenuManager();
 		fillViewMenu(fMenuManager);

 		// ICommandService commandService= (ICommandService)PlatformUI.getWorkbench().getAdapter(ICommandService.class);
 		// IHandlerService handlerService= (IHandlerService)PlatformUI.getWorkbench().getAdapter(IHandlerService.class);
 	}

 	private void showViewMenu() {
 		Menu menu = fMenuManager.createContextMenu(getShell());
 		Rectangle bounds = fToolItem.getBounds();
 		Point topLeft = new Point(bounds.x, bounds.y + bounds.height);
 		topLeft = fToolBar.toDisplay(topLeft);
 		menu.setLocation(topLeft.x, topLeft.y);
 		menu.setVisible(true);
 	}

 	private void fillViewMenu(IMenuManager viewMenu) {
 		if (!fMultipleSelection) {
 			ToggleStatusLineAction showStatusLineAction= new ToggleStatusLineAction();
 			showStatusLineAction.setChecked(fSettings.getBoolean(SHOW_STATUS_LINE));
 			viewMenu.add(showStatusLineAction);
 		}
 		FullyQualifyDuplicatesAction fullyQualifyDuplicatesAction= new FullyQualifyDuplicatesAction();
 		fullyQualifyDuplicatesAction.setChecked(fSettings.getBoolean(FULLY_QUALIFY_DUPLICATES));
 		viewMenu.add(fullyQualifyDuplicatesAction);
 		if (fScope == null) {
 			fFilterActionGroup= new WorkingSetFilterActionGroup(getShell(),
 				JavaPlugin.getActivePage(),
 				new IPropertyChangeListener() {
 					public void propertyChange(PropertyChangeEvent event) {
 						IWorkingSet ws= (IWorkingSet)event.getNewValue();
 						if (ws == null || (ws.isAggregateWorkingSet() && ws.isEmpty())) {
 							fScope= SearchEngine.createWorkspaceScope();
 							fTitleLabel.setText(null);
 						} else {
 							fScope= JavaSearchScopeFactory.getInstance().createJavaSearchScope(ws, true);
 							fTitleLabel.setText(ws.getLabel());
 						}
 						fViewer.setSearchScope(fScope, true);
 					}
 				});
 			String setting= fSettings.get(WORKINGS_SET_SETTINGS);
 			if (setting != null) {
 				try {
 					IMemento memento= XMLMemento.createReadRoot(new StringReader(setting));
 					fFilterActionGroup.restoreState(memento);
 				} catch (WorkbenchException e) {
 				}
 			}
 			IWorkingSet ws= fFilterActionGroup.getWorkingSet();
 			if (ws == null || (ws.isAggregateWorkingSet() && ws.isEmpty())) {
 				fScope= SearchEngine.createWorkspaceScope();
 				fTitleLabel.setText(null);
 			} else {
 				fScope= JavaSearchScopeFactory.getInstance().createJavaSearchScope(ws, true);
 				fTitleLabel.setText(ws.getLabel());
 			}
 			fFilterActionGroup.fillViewMenu(viewMenu);
 		}
 	}

 	private void disposeComponent() {
 		if (fFilterActionGroup != null) {
 			XMLMemento memento= XMLMemento.createWriteRoot("workingSet"); //$NON-NLS-1$
 			fFilterActionGroup.saveState(memento);
 			fFilterActionGroup.dispose();
 			StringWriter writer= new StringWriter();
 			try {
 				memento.save(writer);
 				fSettings.put(WORKINGS_SET_SETTINGS, writer.getBuffer().toString());
 			} catch (IOException e) {
 				// don't do anything. Simply don't store the settings
 			}
 		}
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2010 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.jdt.internal.ui.dialogs;

	import java.io.IOException;
	import java.io.StringReader;
	import java.io.StringWriter;

	import org.eclipse.swt.SWT;
	import org.eclipse.swt.accessibility.AccessibleAdapter;
	import org.eclipse.swt.accessibility.AccessibleEvent;
	import org.eclipse.swt.custom.CLabel;
	import org.eclipse.swt.custom.ViewForm;
	import org.eclipse.swt.events.DisposeEvent;
	import org.eclipse.swt.events.DisposeListener;
	import org.eclipse.swt.events.KeyEvent;
	import org.eclipse.swt.events.KeyListener;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	import org.eclipse.swt.events.TraverseEvent;
	import org.eclipse.swt.events.TraverseListener;
	import org.eclipse.swt.graphics.Font;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.graphics.Rectangle;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Menu;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.swt.widgets.ToolBar;
	import org.eclipse.swt.widgets.ToolItem;

	import org.eclipse.jface.action.Action;
	import org.eclipse.jface.action.IAction;
	import org.eclipse.jface.action.IMenuManager;
	import org.eclipse.jface.action.MenuManager;
	import org.eclipse.jface.dialogs.DialogSettings;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.util.IPropertyChangeListener;
	import org.eclipse.jface.util.PropertyChangeEvent;

	import org.eclipse.ui.IMemento;
	import org.eclipse.ui.IWorkingSet;
	import org.eclipse.ui.WorkbenchException;
	import org.eclipse.ui.XMLMemento;

	import org.eclipse.jdt.core.search.IJavaSearchScope;
	import org.eclipse.jdt.core.search.SearchEngine;
	import org.eclipse.jdt.core.search.TypeNameMatch;

	import org.eclipse.jdt.internal.corext.util.Strings;

	import org.eclipse.jdt.ui.dialogs.ITypeSelectionComponent;
	import org.eclipse.jdt.ui.dialogs.TypeSelectionExtension;

	import org.eclipse.jdt.internal.ui.JavaPlugin;
	import org.eclipse.jdt.internal.ui.JavaPluginImages;
	import org.eclipse.jdt.internal.ui.JavaUIMessages;
	import org.eclipse.jdt.internal.ui.search.JavaSearchScopeFactory;
	import org.eclipse.jdt.internal.ui.util.PixelConverter;
	import org.eclipse.jdt.internal.ui.util.SWTUtil;
	import org.eclipse.jdt.internal.ui.util.TypeNameMatchLabelProvider;
	import org.eclipse.jdt.internal.ui.workingsets.WorkingSetFilterActionGroup;


	/**
	* DO NOT REMOVE, used in a product.
	* @deprecated As of 3.5, replaced by {@link org.eclipse.ui.dialogs.FilteredItemsSelectionDialog}
	*/
	public class TypeSelectionComponent extends Composite implements ITypeSelectionComponent {

	private IDialogSettings fSettings;
	private boolean fMultipleSelection;
	private ITitleLabel fTitleLabel;

	private ToolBar fToolBar;
	private ToolItem fToolItem;
	private MenuManager fMenuManager;
	private WorkingSetFilterActionGroup fFilterActionGroup;

	private TypeSelectionExtension fTypeSelectionExtension;
	private Text fFilter;
	private String fInitialFilterText;
	private IJavaSearchScope fScope;
	private TypeInfoViewer fViewer;
	private ViewForm fForm;
	private CLabel fLabel;

	public static final int NONE= 0;
	public static final int CARET_BEGINNING= 1;
	public static final int FULL_SELECTION= 2;

	private static final String DIALOG_SETTINGS= "org.eclipse.jdt.internal.ui.dialogs.TypeSelectionComponent"; //$NON-NLS-1$
	private static final String SHOW_STATUS_LINE= "show_status_line"; //$NON-NLS-1$
	private static final String FULLY_QUALIFY_DUPLICATES= "fully_qualify_duplicates"; //$NON-NLS-1$
	private static final String WORKINGS_SET_SETTINGS= "workingset_settings"; //$NON-NLS-1$

	private class ToggleStatusLineAction extends Action {
	public ToggleStatusLineAction() {
	super(JavaUIMessages.TypeSelectionComponent_show_status_line_label, IAction.AS_CHECK_BOX);
	}
	@Override
	public void run() {
	if (fForm == null)
	return;
	GridData gd= (GridData)fForm.getLayoutData();
	boolean checked= isChecked();
	gd.exclude= !checked;
	fForm.setVisible(checked);
	fSettings.put(SHOW_STATUS_LINE, checked);
	TypeSelectionComponent.this.layout();
	}
	}

	private class FullyQualifyDuplicatesAction extends Action {
	public FullyQualifyDuplicatesAction() {
	super(JavaUIMessages.TypeSelectionComponent_fully_qualify_duplicates_label, IAction.AS_CHECK_BOX);
	}
	@Override
	public void run() {
	boolean checked= isChecked();
	fViewer.setFullyQualifyDuplicates(checked, true);
	fSettings.put(FULLY_QUALIFY_DUPLICATES, checked);
	}
	}

	/**
	* Special interface to access a title lable in
	* a generic fashion.
	*/
	public interface ITitleLabel {
	/**
	* Sets the title to the given text
	*
	* @param text the title text
	*/
	public void setText(String text);
	}

	public TypeSelectionComponent(Composite parent, int style, String message, boolean multi,
	IJavaSearchScope scope, int elementKind, String initialFilter, ITitleLabel titleLabel,
	TypeSelectionExtension extension) {
	super(parent, style);
	setFont(parent.getFont());
	fMultipleSelection= multi;
	fScope= scope;
	fInitialFilterText= initialFilter;
	fTitleLabel= titleLabel;
	fTypeSelectionExtension= extension;
	IDialogSettings settings= JavaPlugin.getDefault().getDialogSettings();
	fSettings= settings.getSection(DIALOG_SETTINGS);
	if (fSettings == null) {
	fSettings= new DialogSettings(DIALOG_SETTINGS);
	settings.addSection(fSettings);
	}
	if (fSettings.get(SHOW_STATUS_LINE) == null) {
	fSettings.put(SHOW_STATUS_LINE, true);
	}
	createContent(message, elementKind);
	}

	public void triggerSearch() {
	fViewer.forceSearch();
	}

	public TypeNameMatch[] getSelection() {
	return fViewer.getSelection();
	}

	public IJavaSearchScope getScope() {
	return fScope;
	}

	private void createContent(final String message, int elementKind) {
	GridLayout layout= new GridLayout();
	layout.numColumns= 2;
	layout.marginWidth= 0; layout.marginHeight= 0;
	setLayout(layout);
	Font font= getFont();

	Control header= createHeader(this, font, message);
	GridData gd= new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan= 2;
	header.setLayoutData(gd);

	fFilter= new Text(this, SWT.BORDER \| SWT.FLAT);
	fFilter.setFont(font);
	if (fInitialFilterText != null) {
	fFilter.setText(fInitialFilterText);
	}
	gd= new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan= 2;
	fFilter.setLayoutData(gd);
	fFilter.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	patternChanged((Text)e.widget);
	}
	});
	fFilter.addKeyListener(new KeyListener() {
	public void keyReleased(KeyEvent e) {
	}
	public void keyPressed(KeyEvent e) {
	if (e.keyCode == SWT.ARROW_DOWN) {
	fViewer.setFocus();
	}
	}
	});
	fFilter.getAccessible().addAccessibleListener(new AccessibleAdapter() {
	@Override
	public void getName(AccessibleEvent e) {
	e.result= Strings.removeMnemonicIndicator(message);
	}
	});
	TextFieldNavigationHandler.install(fFilter);

	Label label= new Label(this, SWT.NONE);
	label.setFont(font);
	label.setText(JavaUIMessages.TypeSelectionComponent_label);
	label.addTraverseListener(new TraverseListener() {
	public void keyTraversed(TraverseEvent e) {
	if (e.detail == SWT.TRAVERSE_MNEMONIC && e.doit) {
	e.detail= SWT.TRAVERSE_NONE;
	fViewer.setFocus();
	}
	}
	});
	label= new Label(this, SWT.RIGHT);
	label.setFont(font);
	gd= new GridData(GridData.FILL_HORIZONTAL);
	label.setLayoutData(gd);
	fViewer= new TypeInfoViewer(this, fMultipleSelection ? SWT.MULTI : SWT.NONE, label,
	fScope, elementKind, fInitialFilterText,
	fTypeSelectionExtension != null ? fTypeSelectionExtension.getFilterExtension() : null,
	fTypeSelectionExtension != null ? fTypeSelectionExtension.getImageProvider() : null);
	gd= new GridData(GridData.FILL_BOTH);
	final Table table= fViewer.getTable();
	PixelConverter converter= new PixelConverter(table);
	gd.widthHint= converter.convertWidthInCharsToPixels(70);
	gd.heightHint= SWTUtil.getTableHeightHint(table, 10);
	gd.horizontalSpan= 2;
	table.setLayoutData(gd);
	table.getAccessible().addAccessibleListener(new AccessibleAdapter() {
	@Override
	public void getName(AccessibleEvent e) {
	if (table.getSelectionCount() == 0) {
	e.result= Strings.removeMnemonicIndicator(JavaUIMessages.TypeSelectionComponent_label);
	}
	}
	});
	fViewer.setFullyQualifyDuplicates(fSettings.getBoolean(FULLY_QUALIFY_DUPLICATES), false);
	if (fTypeSelectionExtension != null) {
	Control addition= fTypeSelectionExtension.createContentArea(this);
	if (addition != null) {
	addition.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	}
	}
	if (!fMultipleSelection) {
	fForm= new ViewForm(this, SWT.BORDER \| SWT.FLAT);
	fForm.setFont(font);
	gd= new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan= 2;
	boolean showStatusLine= fSettings.getBoolean(SHOW_STATUS_LINE);
	gd.exclude= !showStatusLine;
	fForm.setVisible(showStatusLine);
	fForm.setLayoutData(gd);
	fLabel= new CLabel(fForm, SWT.FLAT);
	fLabel.setFont(fForm.getFont());
	fForm.setContent(fLabel);
	table.addSelectionListener(new SelectionAdapter() {
	private TypeNameMatchLabelProvider fLabelProvider= new TypeNameMatchLabelProvider(
	TypeNameMatchLabelProvider.SHOW_TYPE_CONTAINER_ONLY + TypeNameMatchLabelProvider.SHOW_ROOT_POSTFIX);
	@Override
	public void widgetSelected(SelectionEvent event) {
	TypeNameMatch[] selection= fViewer.getSelection();
	if (selection.length != 1) {
	fLabel.setText(""); //$NON-NLS-1$
	fLabel.setImage(null);
	} else {
	TypeNameMatch type= selection[0];
	fLabel.setText(fViewer.getLabelProvider().getQualificationText(type));
	fLabel.setImage(fLabelProvider.getImage(type));
	}
	}
	});
	}
	addDisposeListener(new DisposeListener() {
	public void widgetDisposed(DisposeEvent event) {
	disposeComponent();
	}
	});
	if (fTypeSelectionExtension != null) {
	fTypeSelectionExtension.initialize(this);
	}
	}

	public void addSelectionListener(SelectionListener listener) {
	fViewer.getTable().addSelectionListener(listener);
	}

	public void populate(int selectionMode) {
	if (fInitialFilterText != null) {
	switch(selectionMode) {
	case CARET_BEGINNING:
	fFilter.setSelection(0, 0);
	break;
	case FULL_SELECTION:
	fFilter.setSelection(0, fInitialFilterText.length());
	break;
	}
	}
	fFilter.setFocus();
	fViewer.startup();
	}

	private void patternChanged(Text text) {
	fViewer.setSearchPattern(text.getText());
	}

	private Control createHeader(Composite parent, Font font, String message) {
	Composite header= new Composite(parent, SWT.NONE);
	GridLayout layout= new GridLayout();
	layout.numColumns= 2;
	layout.marginWidth= 0; layout.marginHeight= 0;
	header.setLayout(layout);
	header.setFont(font);
	Label label= new Label(header, SWT.NONE);
	label.setText(message);
	label.setFont(font);
	label.addTraverseListener(new TraverseListener() {
	public void keyTraversed(TraverseEvent e) {
	if (e.detail == SWT.TRAVERSE_MNEMONIC && e.doit) {
	e.detail= SWT.TRAVERSE_NONE;
	fFilter.setFocus();
	}
	}
	});
	GridData gd= new GridData(GridData.FILL_HORIZONTAL);
	label.setLayoutData(gd);

	createViewMenu(header);
	return header;
	}

	private void createViewMenu(Composite parent) {
	fToolBar= new ToolBar(parent, SWT.FLAT);
	fToolItem= new ToolItem(fToolBar, SWT.PUSH, 0);

	GridData data= new GridData();
	data.horizontalAlignment= GridData.END;
	fToolBar.setLayoutData(data);

	fToolItem.setImage(JavaPluginImages.get(JavaPluginImages.IMG_ELCL_VIEW_MENU));
	fToolItem.setDisabledImage(JavaPluginImages.get(JavaPluginImages.IMG_DLCL_VIEW_MENU));
	fToolItem.setToolTipText(JavaUIMessages.TypeSelectionComponent_menu);
	fToolItem.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	showViewMenu();
	}
	});

	fMenuManager= new MenuManager();
	fillViewMenu(fMenuManager);

	// ICommandService commandService= (ICommandService)PlatformUI.getWorkbench().getAdapter(ICommandService.class);
	// IHandlerService handlerService= (IHandlerService)PlatformUI.getWorkbench().getAdapter(IHandlerService.class);
	}

	private void showViewMenu() {
	Menu menu = fMenuManager.createContextMenu(getShell());
	Rectangle bounds = fToolItem.getBounds();
	Point topLeft = new Point(bounds.x, bounds.y + bounds.height);
	topLeft = fToolBar.toDisplay(topLeft);
	menu.setLocation(topLeft.x, topLeft.y);
	menu.setVisible(true);
	}

	private void fillViewMenu(IMenuManager viewMenu) {
	if (!fMultipleSelection) {
	ToggleStatusLineAction showStatusLineAction= new ToggleStatusLineAction();
	showStatusLineAction.setChecked(fSettings.getBoolean(SHOW_STATUS_LINE));
	viewMenu.add(showStatusLineAction);
	}
	FullyQualifyDuplicatesAction fullyQualifyDuplicatesAction= new FullyQualifyDuplicatesAction();
	fullyQualifyDuplicatesAction.setChecked(fSettings.getBoolean(FULLY_QUALIFY_DUPLICATES));
	viewMenu.add(fullyQualifyDuplicatesAction);
	if (fScope == null) {
	fFilterActionGroup= new WorkingSetFilterActionGroup(getShell(),
	JavaPlugin.getActivePage(),
	new IPropertyChangeListener() {
	public void propertyChange(PropertyChangeEvent event) {
	IWorkingSet ws= (IWorkingSet)event.getNewValue();
	if (ws == null \|\| (ws.isAggregateWorkingSet() && ws.isEmpty())) {
	fScope= SearchEngine.createWorkspaceScope();
	fTitleLabel.setText(null);
	} else {
	fScope= JavaSearchScopeFactory.getInstance().createJavaSearchScope(ws, true);
	fTitleLabel.setText(ws.getLabel());
	}
	fViewer.setSearchScope(fScope, true);
	}
	});
	String setting= fSettings.get(WORKINGS_SET_SETTINGS);
	if (setting != null) {
	try {
	IMemento memento= XMLMemento.createReadRoot(new StringReader(setting));
	fFilterActionGroup.restoreState(memento);
	} catch (WorkbenchException e) {
	}
	}
	IWorkingSet ws= fFilterActionGroup.getWorkingSet();
	if (ws == null \|\| (ws.isAggregateWorkingSet() && ws.isEmpty())) {
	fScope= SearchEngine.createWorkspaceScope();
	fTitleLabel.setText(null);
	} else {
	fScope= JavaSearchScopeFactory.getInstance().createJavaSearchScope(ws, true);
	fTitleLabel.setText(ws.getLabel());
	}
	fFilterActionGroup.fillViewMenu(viewMenu);
	}
	}

	private void disposeComponent() {
	if (fFilterActionGroup != null) {
	XMLMemento memento= XMLMemento.createWriteRoot("workingSet"); //$NON-NLS-1$
	fFilterActionGroup.saveState(memento);
	fFilterActionGroup.dispose();
	StringWriter writer= new StringWriter();
	try {
	memento.save(writer);
	fSettings.put(WORKINGS_SET_SETTINGS, writer.getBuffer().toString());
	} catch (IOException e) {
	// don't do anything. Simply don't store the settings
	}
	}
	}
	}