org.eclipse.search/search/org/eclipse/search/internal/ui/SearchDialog.java - platform/eclipse.platform.text - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2003 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.search.internal.ui;

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

 import org.eclipse.core.resources.IWorkspace;

 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.BusyIndicator;
 import org.eclipse.swt.events.DisposeEvent;
 import org.eclipse.swt.events.DisposeListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.events.SelectionListener;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.Rectangle;
 import org.eclipse.swt.layout.FillLayout;
 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.Display;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Layout;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.TabFolder;
 import org.eclipse.swt.widgets.TabItem;

 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.operation.IRunnableContext;
 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.util.Assert;
 import org.eclipse.jface.viewers.CheckStateChangedEvent;
 import org.eclipse.jface.viewers.CheckboxTableViewer;
 import org.eclipse.jface.viewers.ICheckStateListener;
 import org.eclipse.jface.viewers.ILabelProvider;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.LabelProvider;
 import org.eclipse.jface.window.Window;

 import org.eclipse.ui.IEditorPart;
 import org.eclipse.ui.IFileEditorInput;
 import org.eclipse.ui.IWorkingSet;
 import org.eclipse.ui.dialogs.ListSelectionDialog;
 import org.eclipse.ui.help.WorkbenchHelp;

 import org.eclipse.search.ui.IReplacePage;
 import org.eclipse.search.ui.ISearchPage;
 import org.eclipse.search.ui.ISearchPageContainer;
 import org.eclipse.search.ui.ISearchPageScoreComputer;

 import org.eclipse.search.internal.ui.util.ExtendedDialogWindow;
 import org.eclipse.search.internal.ui.util.ListContentProvider;
 import org.eclipse.search.internal.ui.util.SWTUtil;

 class SearchDialog extends ExtendedDialogWindow implements ISearchPageContainer {

 	private class TabFolderLayout extends Layout {
 		protected Point computeSize(Composite composite, int wHint, int hHint, boolean flushCache) {
 			if (wHint != SWT.DEFAULT && hHint != SWT.DEFAULT)
 				return new Point(wHint, hHint);

 			int x= 0;
 			int y= 0;
 			Control[] children= composite.getChildren();
 			for (int i= 0; i < children.length; i++) {
 				Point size= children[i].computeSize(SWT.DEFAULT, SWT.DEFAULT, flushCache);
 				x= Math.max(x, size.x);
 				y= Math.max(y, size.y);
 			}

 			Point minSize= getMinSize();
 			x= Math.max(x, minSize.x);
 			y= Math.max(y, minSize.y);

 			if (wHint != SWT.DEFAULT)
 				x= wHint;
 			if (hHint != SWT.DEFAULT)
 				y= hHint;
 			return new Point(x, y);
 		}
 		protected void layout(Composite composite, boolean flushCache) {
 			Rectangle rect= composite.getClientArea();

 			Control[] children= composite.getChildren();
 			for (int i= 0; i < children.length; i++) {
 				children[i].setBounds(rect);
 			}
 		}
 	}


 	private static final int SEARCH_ID= IDialogConstants.CLIENT_ID+1;
 	private static final int REPLACE_ID= SEARCH_ID+1;

 	private IWorkspace fWorkspace;
 	private ISearchPage fCurrentPage;
 	private String fInitialPageId;
 	private int fCurrentIndex;
 	private ISelection fSelection;
 	private IEditorPart fEditorPart;
 	private List fDescriptors;
 	private Point fMinSize;
 	private ScopePart[] fScopeParts;
 	private boolean fPageStateIgnoringScopePart;
 	private Button fCustomizeButton;
 	private Button fReplaceButton;

 	public SearchDialog(Shell shell, IWorkspace workspace, ISelection selection, IEditorPart editor, String pageId) {
 		super(shell);
 		Assert.isNotNull(workspace);
 		fWorkspace= workspace;
 		fSelection= selection;
 		fEditorPart= editor;
 		fDescriptors= SearchPlugin.getDefault().getEnabledSearchPageDescriptors(pageId);
 		fInitialPageId= pageId;
 	}

 	/* (non-Javadoc)
 	 * Method declared in Window.
 	 */
 	protected void configureShell(Shell shell) {
 		super.configureShell(shell);
 		shell.setText(SearchMessages.getString("SearchDialog.title")); //$NON-NLS-1$
 		shell.setImage(SearchPluginImages.get(SearchPluginImages.IMG_TOOL_SEARCH));
 		WorkbenchHelp.setHelp(shell, ISearchHelpContextIds.SEARCH_DIALOG);
 	}

 	public IWorkspace getWorkspace() {
 		return fWorkspace;
 	}

 	public ISelection getSelection() {
 		return fSelection;
 	}

 	public IEditorPart getEditorPart() {
 		return fEditorPart;
 	}

 	//---- Page Handling -------------------------------------------------------

 	/*
 	 * Overrides method from Window
 	 */
 	public void create() {
 		super.create();
 		if (fCurrentPage != null)
 			fCurrentPage.setVisible(true);
 	}

 	private void handleCustomizePressed() {
 		List input= SearchPlugin.getDefault().getSearchPageDescriptors();
 		final ArrayList createdImages= new ArrayList(input.size());
 		ILabelProvider labelProvider= new LabelProvider() {
 			public String getText(Object element) {
 				if (element instanceof SearchPageDescriptor) {
 					String label= ((SearchPageDescriptor)element).getLabel();
 					int i= label.indexOf('&');
 					while (i >= 0) {
 						if (i < label.length())
 							label= label.substring(0, i) + label.substring(i+1);
 						else
 							label.substring(0, i);
 						i= label.indexOf('&');
 					}
 					return label;
 				} else
 					return null;
 			}
 			public Image getImage(Object element) {
 				if (element instanceof SearchPageDescriptor) {
 					ImageDescriptor imageDesc= ((SearchPageDescriptor)element).getImage();
 					if (imageDesc == null)
 						return null;
 					Image image= imageDesc.createImage();
 					if (image != null)
 						createdImages.add(image);
 					return image;
 				} else
 					return null;
 			}
 		};

 		String message= SearchMessages.getString("SearchPageSelectionDialog.message"); //$NON-NLS-1$

 		ListSelectionDialog dialog= new ListSelectionDialog(getShell(), input, new ListContentProvider(), labelProvider, message) {
 				public void create() {
 					super.create();
 					final CheckboxTableViewer viewer= getViewer();
 					final Button okButton= this.getOkButton();
 					viewer.addCheckStateListener(new ICheckStateListener() {
 						public void checkStateChanged(CheckStateChangedEvent event) {
 							okButton.setEnabled(viewer.getCheckedElements().length > 0);
 						}
 					});
 					SelectionListener listener = new SelectionAdapter() {
 						public void widgetSelected(SelectionEvent e) {
 							okButton.setEnabled(viewer.getCheckedElements().length > 0);
 						}
 					};
 					this.getButton(IDialogConstants.SELECT_ALL_ID).addSelectionListener(listener);
 					this.getButton(IDialogConstants.DESELECT_ALL_ID).addSelectionListener(listener);
 				}
 			};
 		dialog.setTitle(SearchMessages.getString("SearchPageSelectionDialog.title")); //$NON-NLS-1$
 		dialog.setInitialSelections(SearchPlugin.getDefault().getEnabledSearchPageDescriptors(fInitialPageId).toArray());
 		if (dialog.open() == Window.OK) {
 			SearchPageDescriptor.setEnabled(dialog.getResult());
 			Display display= getShell().getDisplay();
 			close();
 			if (display != null && !display.isDisposed()) {
 				display.asyncExec(
 					new Runnable() {
 						public void run() {
 							new OpenSearchDialogAction().run();
 						}
 					});
 			}
 		}
 		destroyImages(createdImages);
 	}

 	private void destroyImages(List images) {
 		Iterator iter= images.iterator();
 		while (iter.hasNext()) {
 			Image image= (Image)iter.next();
 			if (image != null && !image.isDisposed())
 				image.dispose();
 		}
 	}

 	protected Control createPageArea(Composite parent) {
 		int numPages= fDescriptors.size();
 		fScopeParts= new ScopePart[numPages];

 		if (numPages == 0) {
 			Label label= new Label(parent, SWT.CENTER | SWT.WRAP);
 			label.setText(SearchMessages.getString("SearchDialog.noSearchExtension")); //$NON-NLS-1$
 			return label;
 		}

 		fCurrentIndex= getPreferredPageIndex();

 		BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
 			public void run() {
 				fCurrentPage= getDescriptorAt(fCurrentIndex).createObject();
 			}
 		});

 		fCurrentPage.setContainer(this);

 		if (numPages == 1)
 			return getControl(fCurrentPage, parent, 0);
 		else {
 			Composite border= new Composite(parent, SWT.NONE);
 			FillLayout layout= new FillLayout();
 			layout.marginWidth= 7;
 			layout.marginHeight= 7;
 			border.setLayout(layout);

 			TabFolder folder= new TabFolder(border, SWT.NONE);
 			folder.setLayout(new TabFolderLayout());

 			for (int i= 0; i < numPages; i++) {
 				SearchPageDescriptor descriptor= (SearchPageDescriptor)fDescriptors.get(i);

 				final TabItem item= new TabItem(folder, SWT.NONE);
 				item.setText(descriptor.getLabel());
 				item.addDisposeListener(new DisposeListener() {
 					public void widgetDisposed(DisposeEvent e) {
 						item.setData(null);
 						if (item.getImage() != null)
 							item.getImage().dispose();
 					}
 				});
 				ImageDescriptor imageDesc= descriptor.getImage();
 				if (imageDesc != null)
 					item.setImage(imageDesc.createImage());
 				item.setData(descriptor);
 				if (i == fCurrentIndex) {
 					item.setControl(getControl(fCurrentPage, folder, i));
 					item.setData(fCurrentPage);
 				}
 			}

 			folder.addSelectionListener(new SelectionAdapter() {
 				public void widgetSelected(SelectionEvent event) {
 					turnToPage(event);
 				}
 			});

 			folder.setSelection(fCurrentIndex);

 			return border;
 		}
 	}

 	protected void createButtonsForButtonBar(Composite parent) {
 		fReplaceButton= createActionButton(parent, REPLACE_ID, SearchMessages.getString("SearchDialog.replaceAction"), true); //$NON-NLS-1$
 		fReplaceButton.setVisible(fCurrentPage instanceof IReplacePage);
 		createActionButton(parent, SEARCH_ID, SearchMessages.getString("SearchDialog.searchAction"), true); //$NON-NLS-1$
 		super.createButtonsForButtonBar(parent);
 	}

 	protected Control createButtonBar(Composite parent) {
 		Composite composite= new Composite(parent, SWT.NULL);
 		GridLayout layout= new GridLayout();
 		layout.numColumns= 3;
 		layout.marginHeight= 0;
 		layout.marginWidth= 0;

 		composite.setLayout(layout);
 		composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

 		fCustomizeButton= new Button(composite, SWT.NONE);
 		fCustomizeButton.setText(SearchMessages.getString("SearchDialog.customize")); //$NON-NLS-1$
 		GridData gd= new GridData();
 		gd.horizontalIndent= 2 * new GridLayout().marginWidth;
 		fCustomizeButton.setLayoutData(gd);
 		SWTUtil.setButtonDimensionHint(fCustomizeButton);
 		fCustomizeButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				handleCustomizePressed();
 			}
 		});

 		Label filler= new Label(composite, SWT.NONE);
 		filler.setLayoutData(new GridData(GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL));

 		Control result= super.createButtonBar(composite);
 		getButton(SEARCH_ID).setEnabled(fDescriptors.size() > 0);
 		applyDialogFont(composite);
 		return result;
 	}

 	protected boolean performAction(int actionID) {
 		if (fCurrentPage == null)
 			return true;

 		boolean isAutoBuilding= SearchPlugin.getWorkspace().isAutoBuilding();
 		if (isAutoBuilding)
 			// disable auto-build during search operation
 			SearchPlugin.setAutoBuilding(false);
 		try {
 			fCustomizeButton.setEnabled(false);
 			if (actionID == SEARCH_ID)
 				return fCurrentPage.performAction();
 			else
 				// safe cast, replace button is only visible when the curren page is
 				// a replace page.
 				return ((IReplacePage)fCurrentPage).performReplace();
 		} finally {
 			fCustomizeButton.setEnabled(true);
 			if (isAutoBuilding)
 				// enable auto-building again
 				SearchPlugin.setAutoBuilding(true);
 		}
 	}

 	private SearchPageDescriptor getDescriptorAt(int index) {
 		return (SearchPageDescriptor)fDescriptors.get(index);
 	}

 	private Point getMinSize() {
 		if (fMinSize != null)
 			return fMinSize;

 		int x= 0;
 		int y= 0;
 		int length= fDescriptors.size();
 		for (int i= 0; i < length; i++) {
 			Point size= getDescriptorAt(i).getPreferredSize();
 			if (size.x != SWT.DEFAULT)
 				x= Math.max(x, size.x);
 			if (size.y != SWT.DEFAULT)
 				y= Math.max(y, size.y);
 		}

 		fMinSize= new Point(x, y);
 		return fMinSize;
 	}

 	private void turnToPage(SelectionEvent event) {
 		final TabItem item= (TabItem)event.item;
 		TabFolder folder= item.getParent();
 		Control oldControl= folder.getItem(fCurrentIndex).getControl();
 		Point oldSize= oldControl.getSize();
 		if (item.getControl() == null) {
 			final SearchPageDescriptor descriptor= (SearchPageDescriptor)item.getData();

 			BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
 				public void run() {
 					item.setData(descriptor.createObject());
 				}
 			});

 			ISearchPage page= (ISearchPage)item.getData();
 			page.setContainer(this);

 			Control newControl= getControl(page, (Composite)event.widget, item.getParent().getSelectionIndex());
 			item.setControl(newControl);
 		}
 		if (item.getData() instanceof ISearchPage) {
 			fCurrentPage= (ISearchPage)item.getData();
 			fReplaceButton.setVisible(fCurrentPage instanceof IReplacePage);
 			fCurrentIndex= item.getParent().getSelectionIndex();
 			fCurrentPage.setVisible(true);
 		}
 		Control newControl= item.getControl();
 		resizeDialogIfNeeded(oldSize, newControl.computeSize(SWT.DEFAULT, SWT.DEFAULT, true));
 	}

 	private int getPreferredPageIndex() {
 		Object element= null;
 		if (fSelection instanceof IStructuredSelection)
 			element= ((IStructuredSelection)fSelection).getFirstElement();
 		if (element == null && fEditorPart != null) {
 			element= fEditorPart.getEditorInput();
 			if (element instanceof IFileEditorInput)
 				element= ((IFileEditorInput)element).getFile();
 		}
 		int result= 0;
 		int level= ISearchPageScoreComputer.LOWEST;
 		int size= fDescriptors.size();
 		for (int i= 0; i < size; i++) {
 			SearchPageDescriptor descriptor= (SearchPageDescriptor)fDescriptors.get(i);
 			if (fInitialPageId != null && fInitialPageId.equals(descriptor.getId()))
 				return i;

 			int newLevel= descriptor.computeScore(element);
 			if ( newLevel > level) {
 				level= newLevel;
 				result= i;
 			}
 		}
 		return result;
 	}

 	/*
 	 * Implements method from ISearchPageContainer
 	 */
 	public IRunnableContext getRunnableContext() {
 		return this;
 	}

 	/*
 	 * Implements method from ISearchPageContainer
 	 */
 	public int getSelectedScope() {
 		if (fScopeParts[fCurrentIndex] == null)
 			// safe code - should not happen
 			return ISearchPageContainer.WORKSPACE_SCOPE;
 		else
 			return fScopeParts[fCurrentIndex].getSelectedScope();
 	}

 	/*
 	 * Implements method from ISearchPageContainer
 	 */
 	public IWorkingSet[] getSelectedWorkingSets() {
 		if (fScopeParts[fCurrentIndex] == null)
 			// safe code - should not happen
 			return null;
 		else
 			return fScopeParts[fCurrentIndex].getSelectedWorkingSets();
 	}

 	/*
 	 * Implements method from ISearchPageContainer
 	 */
 	public void setSelectedScope(int scope) {
 		if (fScopeParts[fCurrentIndex] != null)
 			fScopeParts[fCurrentIndex].setSelectedScope(scope);
 	}

 	/*
 	 * Implements method from ISearchPageContainer
 	 */
 	public boolean hasValidScope() {
 		return getSelectedScope() != WORKING_SET_SCOPE || getSelectedWorkingSets() != null;
 	}

 	/*
 	 * Implements method from ISearchPageContainer
 	 */
 	public void setSelectedWorkingSets(IWorkingSet[] workingSets) {
 		if (fScopeParts[fCurrentIndex] != null)
 			fScopeParts[fCurrentIndex].setSelectedWorkingSets(workingSets);
 	}

 	/*
 	 * Overrides method from ExtendedDialogWindow
 	 */
 	public void setPerformActionEnabled(boolean state) {
 		super.setPerformActionEnabled(state);
 		fPageStateIgnoringScopePart= state;
 		setPerformActionEnabledFromScopePart(hasValidScope());
 	}

 	/**
 	 * Set the enable state of the perform action button.
 	 * <p>
 	 * Note: This is a special method to be called only from the ScopePart
 	 * </p>
 	 */
 	public void setPerformActionEnabledFromScopePart(boolean state) {
 		if (fPageStateIgnoringScopePart)
 			super.setPerformActionEnabled(state);
 	}

 	private Control getControl(ISearchPage page, Composite parent, int index) {
 		Control control= page.getControl();
 		if (control != null)
 			return control;
 			// Page wrapper
 			Composite pageWrapper= new Composite(parent, SWT.NONE);
 			GridLayout layout= new GridLayout();
 			layout.marginWidth= 0;
 			layout.marginHeight= 0;
 			pageWrapper.setLayout(layout);

 		Dialog.applyDialogFont(pageWrapper);
 			// The page itself
 			page.createControl(pageWrapper);

 			// Search scope
 			SearchPageDescriptor descriptor= getDescriptorAt(index);
 			boolean showScope= descriptor.showScopeSection();
 			if (showScope) {
 				Composite c= new Composite(pageWrapper, SWT.NONE);
 				layout= new GridLayout();
 				c.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 				c.setLayout(layout);
 				fScopeParts[index]= new ScopePart(this, descriptor.canSearchInProjects());
 				Control part= fScopeParts[index].createPart(c);
 				applyDialogFont(part);
 				fScopeParts[index].setVisible(true);
 			}
 		return pageWrapper;
 		}

 	private void resizeDialogIfNeeded(Point oldSize, Point newSize) {
 		if (oldSize == null || newSize == null)
 			return;
 			Shell shell= getShell();
 		Point shellSize= shell.getSize();
 		if (mustResize(oldSize, newSize)) {
 			if (newSize.x > oldSize.x)
 				shellSize.x+= (newSize.x-oldSize.x);
 			if (newSize.y > oldSize.y)
 				shellSize.y+= (newSize.y-oldSize.y);
 			shell.setSize(shellSize);
 					shell.layout(true);
 		}
 	}

 	private boolean mustResize(Point currentSize, Point newSize) {
 		return currentSize.x < newSize.x || currentSize.y < newSize.y;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2003 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Common Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/cpl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.search.internal.ui;

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

	import org.eclipse.core.resources.IWorkspace;

	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.BusyIndicator;
	import org.eclipse.swt.events.DisposeEvent;
	import org.eclipse.swt.events.DisposeListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.events.SelectionListener;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.graphics.Rectangle;
	import org.eclipse.swt.layout.FillLayout;
	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.Display;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Layout;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.TabFolder;
	import org.eclipse.swt.widgets.TabItem;

	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.operation.IRunnableContext;
	import org.eclipse.jface.resource.ImageDescriptor;
	import org.eclipse.jface.util.Assert;
	import org.eclipse.jface.viewers.CheckStateChangedEvent;
	import org.eclipse.jface.viewers.CheckboxTableViewer;
	import org.eclipse.jface.viewers.ICheckStateListener;
	import org.eclipse.jface.viewers.ILabelProvider;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.LabelProvider;
	import org.eclipse.jface.window.Window;

	import org.eclipse.ui.IEditorPart;
	import org.eclipse.ui.IFileEditorInput;
	import org.eclipse.ui.IWorkingSet;
	import org.eclipse.ui.dialogs.ListSelectionDialog;
	import org.eclipse.ui.help.WorkbenchHelp;

	import org.eclipse.search.ui.IReplacePage;
	import org.eclipse.search.ui.ISearchPage;
	import org.eclipse.search.ui.ISearchPageContainer;
	import org.eclipse.search.ui.ISearchPageScoreComputer;

	import org.eclipse.search.internal.ui.util.ExtendedDialogWindow;
	import org.eclipse.search.internal.ui.util.ListContentProvider;
	import org.eclipse.search.internal.ui.util.SWTUtil;

	class SearchDialog extends ExtendedDialogWindow implements ISearchPageContainer {

	private class TabFolderLayout extends Layout {
	protected Point computeSize(Composite composite, int wHint, int hHint, boolean flushCache) {
	if (wHint != SWT.DEFAULT && hHint != SWT.DEFAULT)
	return new Point(wHint, hHint);

	int x= 0;
	int y= 0;
	Control[] children= composite.getChildren();
	for (int i= 0; i < children.length; i++) {
	Point size= children[i].computeSize(SWT.DEFAULT, SWT.DEFAULT, flushCache);
	x= Math.max(x, size.x);
	y= Math.max(y, size.y);
	}

	Point minSize= getMinSize();
	x= Math.max(x, minSize.x);
	y= Math.max(y, minSize.y);

	if (wHint != SWT.DEFAULT)
	x= wHint;
	if (hHint != SWT.DEFAULT)
	y= hHint;
	return new Point(x, y);
	}
	protected void layout(Composite composite, boolean flushCache) {
	Rectangle rect= composite.getClientArea();

	Control[] children= composite.getChildren();
	for (int i= 0; i < children.length; i++) {
	children[i].setBounds(rect);
	}
	}
	}


	private static final int SEARCH_ID= IDialogConstants.CLIENT_ID+1;
	private static final int REPLACE_ID= SEARCH_ID+1;

	private IWorkspace fWorkspace;
	private ISearchPage fCurrentPage;
	private String fInitialPageId;
	private int fCurrentIndex;
	private ISelection fSelection;
	private IEditorPart fEditorPart;
	private List fDescriptors;
	private Point fMinSize;
	private ScopePart[] fScopeParts;
	private boolean fPageStateIgnoringScopePart;
	private Button fCustomizeButton;
	private Button fReplaceButton;

	public SearchDialog(Shell shell, IWorkspace workspace, ISelection selection, IEditorPart editor, String pageId) {
	super(shell);
	Assert.isNotNull(workspace);
	fWorkspace= workspace;
	fSelection= selection;
	fEditorPart= editor;
	fDescriptors= SearchPlugin.getDefault().getEnabledSearchPageDescriptors(pageId);
	fInitialPageId= pageId;
	}

	/* (non-Javadoc)
	* Method declared in Window.
	*/
	protected void configureShell(Shell shell) {
	super.configureShell(shell);
	shell.setText(SearchMessages.getString("SearchDialog.title")); //$NON-NLS-1$
	shell.setImage(SearchPluginImages.get(SearchPluginImages.IMG_TOOL_SEARCH));
	WorkbenchHelp.setHelp(shell, ISearchHelpContextIds.SEARCH_DIALOG);
	}

	public IWorkspace getWorkspace() {
	return fWorkspace;
	}

	public ISelection getSelection() {
	return fSelection;
	}

	public IEditorPart getEditorPart() {
	return fEditorPart;
	}

	//---- Page Handling -------------------------------------------------------

	/*
	* Overrides method from Window
	*/
	public void create() {
	super.create();
	if (fCurrentPage != null)
	fCurrentPage.setVisible(true);
	}

	private void handleCustomizePressed() {
	List input= SearchPlugin.getDefault().getSearchPageDescriptors();
	final ArrayList createdImages= new ArrayList(input.size());
	ILabelProvider labelProvider= new LabelProvider() {
	public String getText(Object element) {
	if (element instanceof SearchPageDescriptor) {
	String label= ((SearchPageDescriptor)element).getLabel();
	int i= label.indexOf('&');
	while (i >= 0) {
	if (i < label.length())
	label= label.substring(0, i) + label.substring(i+1);
	else
	label.substring(0, i);
	i= label.indexOf('&');
	}
	return label;
	} else
	return null;
	}
	public Image getImage(Object element) {
	if (element instanceof SearchPageDescriptor) {
	ImageDescriptor imageDesc= ((SearchPageDescriptor)element).getImage();
	if (imageDesc == null)
	return null;
	Image image= imageDesc.createImage();
	if (image != null)
	createdImages.add(image);
	return image;
	} else
	return null;
	}
	};

	String message= SearchMessages.getString("SearchPageSelectionDialog.message"); //$NON-NLS-1$

	ListSelectionDialog dialog= new ListSelectionDialog(getShell(), input, new ListContentProvider(), labelProvider, message) {
	public void create() {
	super.create();
	final CheckboxTableViewer viewer= getViewer();
	final Button okButton= this.getOkButton();
	viewer.addCheckStateListener(new ICheckStateListener() {
	public void checkStateChanged(CheckStateChangedEvent event) {
	okButton.setEnabled(viewer.getCheckedElements().length > 0);
	}
	});
	SelectionListener listener = new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	okButton.setEnabled(viewer.getCheckedElements().length > 0);
	}
	};
	this.getButton(IDialogConstants.SELECT_ALL_ID).addSelectionListener(listener);
	this.getButton(IDialogConstants.DESELECT_ALL_ID).addSelectionListener(listener);
	}
	};
	dialog.setTitle(SearchMessages.getString("SearchPageSelectionDialog.title")); //$NON-NLS-1$
	dialog.setInitialSelections(SearchPlugin.getDefault().getEnabledSearchPageDescriptors(fInitialPageId).toArray());
	if (dialog.open() == Window.OK) {
	SearchPageDescriptor.setEnabled(dialog.getResult());
	Display display= getShell().getDisplay();
	close();
	if (display != null && !display.isDisposed()) {
	display.asyncExec(
	new Runnable() {
	public void run() {
	new OpenSearchDialogAction().run();
	}
	});
	}
	}
	destroyImages(createdImages);
	}

	private void destroyImages(List images) {
	Iterator iter= images.iterator();
	while (iter.hasNext()) {
	Image image= (Image)iter.next();
	if (image != null && !image.isDisposed())
	image.dispose();
	}
	}

	protected Control createPageArea(Composite parent) {
	int numPages= fDescriptors.size();
	fScopeParts= new ScopePart[numPages];

	if (numPages == 0) {
	Label label= new Label(parent, SWT.CENTER \| SWT.WRAP);
	label.setText(SearchMessages.getString("SearchDialog.noSearchExtension")); //$NON-NLS-1$
	return label;
	}

	fCurrentIndex= getPreferredPageIndex();

	BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
	public void run() {
	fCurrentPage= getDescriptorAt(fCurrentIndex).createObject();
	}
	});

	fCurrentPage.setContainer(this);

	if (numPages == 1)
	return getControl(fCurrentPage, parent, 0);
	else {
	Composite border= new Composite(parent, SWT.NONE);
	FillLayout layout= new FillLayout();
	layout.marginWidth= 7;
	layout.marginHeight= 7;
	border.setLayout(layout);

	TabFolder folder= new TabFolder(border, SWT.NONE);
	folder.setLayout(new TabFolderLayout());

	for (int i= 0; i < numPages; i++) {
	SearchPageDescriptor descriptor= (SearchPageDescriptor)fDescriptors.get(i);

	final TabItem item= new TabItem(folder, SWT.NONE);
	item.setText(descriptor.getLabel());
	item.addDisposeListener(new DisposeListener() {
	public void widgetDisposed(DisposeEvent e) {
	item.setData(null);
	if (item.getImage() != null)
	item.getImage().dispose();
	}
	});
	ImageDescriptor imageDesc= descriptor.getImage();
	if (imageDesc != null)
	item.setImage(imageDesc.createImage());
	item.setData(descriptor);
	if (i == fCurrentIndex) {
	item.setControl(getControl(fCurrentPage, folder, i));
	item.setData(fCurrentPage);
	}
	}

	folder.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent event) {
	turnToPage(event);
	}
	});

	folder.setSelection(fCurrentIndex);

	return border;
	}
	}

	protected void createButtonsForButtonBar(Composite parent) {
	fReplaceButton= createActionButton(parent, REPLACE_ID, SearchMessages.getString("SearchDialog.replaceAction"), true); //$NON-NLS-1$
	fReplaceButton.setVisible(fCurrentPage instanceof IReplacePage);
	createActionButton(parent, SEARCH_ID, SearchMessages.getString("SearchDialog.searchAction"), true); //$NON-NLS-1$
	super.createButtonsForButtonBar(parent);
	}

	protected Control createButtonBar(Composite parent) {
	Composite composite= new Composite(parent, SWT.NULL);
	GridLayout layout= new GridLayout();
	layout.numColumns= 3;
	layout.marginHeight= 0;
	layout.marginWidth= 0;

	composite.setLayout(layout);
	composite.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

	fCustomizeButton= new Button(composite, SWT.NONE);
	fCustomizeButton.setText(SearchMessages.getString("SearchDialog.customize")); //$NON-NLS-1$
	GridData gd= new GridData();
	gd.horizontalIndent= 2 * new GridLayout().marginWidth;
	fCustomizeButton.setLayoutData(gd);
	SWTUtil.setButtonDimensionHint(fCustomizeButton);
	fCustomizeButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	handleCustomizePressed();
	}
	});

	Label filler= new Label(composite, SWT.NONE);
	filler.setLayoutData(new GridData(GridData.FILL_HORIZONTAL \| GridData.GRAB_HORIZONTAL));

	Control result= super.createButtonBar(composite);
	getButton(SEARCH_ID).setEnabled(fDescriptors.size() > 0);
	applyDialogFont(composite);
	return result;
	}

	protected boolean performAction(int actionID) {
	if (fCurrentPage == null)
	return true;

	boolean isAutoBuilding= SearchPlugin.getWorkspace().isAutoBuilding();
	if (isAutoBuilding)
	// disable auto-build during search operation
	SearchPlugin.setAutoBuilding(false);
	try {
	fCustomizeButton.setEnabled(false);
	if (actionID == SEARCH_ID)
	return fCurrentPage.performAction();
	else
	// safe cast, replace button is only visible when the curren page is
	// a replace page.
	return ((IReplacePage)fCurrentPage).performReplace();
	} finally {
	fCustomizeButton.setEnabled(true);
	if (isAutoBuilding)
	// enable auto-building again
	SearchPlugin.setAutoBuilding(true);
	}
	}

	private SearchPageDescriptor getDescriptorAt(int index) {
	return (SearchPageDescriptor)fDescriptors.get(index);
	}

	private Point getMinSize() {
	if (fMinSize != null)
	return fMinSize;

	int x= 0;
	int y= 0;
	int length= fDescriptors.size();
	for (int i= 0; i < length; i++) {
	Point size= getDescriptorAt(i).getPreferredSize();
	if (size.x != SWT.DEFAULT)
	x= Math.max(x, size.x);
	if (size.y != SWT.DEFAULT)
	y= Math.max(y, size.y);
	}

	fMinSize= new Point(x, y);
	return fMinSize;
	}

	private void turnToPage(SelectionEvent event) {
	final TabItem item= (TabItem)event.item;
	TabFolder folder= item.getParent();
	Control oldControl= folder.getItem(fCurrentIndex).getControl();
	Point oldSize= oldControl.getSize();
	if (item.getControl() == null) {
	final SearchPageDescriptor descriptor= (SearchPageDescriptor)item.getData();

	BusyIndicator.showWhile(getShell().getDisplay(), new Runnable() {
	public void run() {
	item.setData(descriptor.createObject());
	}
	});

	ISearchPage page= (ISearchPage)item.getData();
	page.setContainer(this);

	Control newControl= getControl(page, (Composite)event.widget, item.getParent().getSelectionIndex());
	item.setControl(newControl);
	}
	if (item.getData() instanceof ISearchPage) {
	fCurrentPage= (ISearchPage)item.getData();
	fReplaceButton.setVisible(fCurrentPage instanceof IReplacePage);
	fCurrentIndex= item.getParent().getSelectionIndex();
	fCurrentPage.setVisible(true);
	}
	Control newControl= item.getControl();
	resizeDialogIfNeeded(oldSize, newControl.computeSize(SWT.DEFAULT, SWT.DEFAULT, true));
	}

	private int getPreferredPageIndex() {
	Object element= null;
	if (fSelection instanceof IStructuredSelection)
	element= ((IStructuredSelection)fSelection).getFirstElement();
	if (element == null && fEditorPart != null) {
	element= fEditorPart.getEditorInput();
	if (element instanceof IFileEditorInput)
	element= ((IFileEditorInput)element).getFile();
	}
	int result= 0;
	int level= ISearchPageScoreComputer.LOWEST;
	int size= fDescriptors.size();
	for (int i= 0; i < size; i++) {
	SearchPageDescriptor descriptor= (SearchPageDescriptor)fDescriptors.get(i);
	if (fInitialPageId != null && fInitialPageId.equals(descriptor.getId()))
	return i;

	int newLevel= descriptor.computeScore(element);
	if ( newLevel > level) {
	level= newLevel;
	result= i;
	}
	}
	return result;
	}

	/*
	* Implements method from ISearchPageContainer
	*/
	public IRunnableContext getRunnableContext() {
	return this;
	}

	/*
	* Implements method from ISearchPageContainer
	*/
	public int getSelectedScope() {
	if (fScopeParts[fCurrentIndex] == null)
	// safe code - should not happen
	return ISearchPageContainer.WORKSPACE_SCOPE;
	else
	return fScopeParts[fCurrentIndex].getSelectedScope();
	}

	/*
	* Implements method from ISearchPageContainer
	*/
	public IWorkingSet[] getSelectedWorkingSets() {
	if (fScopeParts[fCurrentIndex] == null)
	// safe code - should not happen
	return null;
	else
	return fScopeParts[fCurrentIndex].getSelectedWorkingSets();
	}

	/*
	* Implements method from ISearchPageContainer
	*/
	public void setSelectedScope(int scope) {
	if (fScopeParts[fCurrentIndex] != null)
	fScopeParts[fCurrentIndex].setSelectedScope(scope);
	}

	/*
	* Implements method from ISearchPageContainer
	*/
	public boolean hasValidScope() {
	return getSelectedScope() != WORKING_SET_SCOPE \|\| getSelectedWorkingSets() != null;
	}

	/*
	* Implements method from ISearchPageContainer
	*/
	public void setSelectedWorkingSets(IWorkingSet[] workingSets) {
	if (fScopeParts[fCurrentIndex] != null)
	fScopeParts[fCurrentIndex].setSelectedWorkingSets(workingSets);
	}

	/*
	* Overrides method from ExtendedDialogWindow
	*/
	public void setPerformActionEnabled(boolean state) {
	super.setPerformActionEnabled(state);
	fPageStateIgnoringScopePart= state;
	setPerformActionEnabledFromScopePart(hasValidScope());
	}

	/**
	* Set the enable state of the perform action button.
	* <p>
	* Note: This is a special method to be called only from the ScopePart
	* </p>
	*/
	public void setPerformActionEnabledFromScopePart(boolean state) {
	if (fPageStateIgnoringScopePart)
	super.setPerformActionEnabled(state);
	}

	private Control getControl(ISearchPage page, Composite parent, int index) {
	Control control= page.getControl();
	if (control != null)
	return control;
	// Page wrapper
	Composite pageWrapper= new Composite(parent, SWT.NONE);
	GridLayout layout= new GridLayout();
	layout.marginWidth= 0;
	layout.marginHeight= 0;
	pageWrapper.setLayout(layout);

	Dialog.applyDialogFont(pageWrapper);
	// The page itself
	page.createControl(pageWrapper);

	// Search scope
	SearchPageDescriptor descriptor= getDescriptorAt(index);
	boolean showScope= descriptor.showScopeSection();
	if (showScope) {
	Composite c= new Composite(pageWrapper, SWT.NONE);
	layout= new GridLayout();
	c.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	c.setLayout(layout);
	fScopeParts[index]= new ScopePart(this, descriptor.canSearchInProjects());
	Control part= fScopeParts[index].createPart(c);
	applyDialogFont(part);
	fScopeParts[index].setVisible(true);
	}
	return pageWrapper;
	}

	private void resizeDialogIfNeeded(Point oldSize, Point newSize) {
	if (oldSize == null \|\| newSize == null)
	return;
	Shell shell= getShell();
	Point shellSize= shell.getSize();
	if (mustResize(oldSize, newSize)) {
	if (newSize.x > oldSize.x)
	shellSize.x+= (newSize.x-oldSize.x);
	if (newSize.y > oldSize.y)
	shellSize.y+= (newSize.y-oldSize.y);
	shell.setSize(shellSize);
	shell.layout(true);
	}
	}

	private boolean mustResize(Point currentSize, Point newSize) {
	return currentSize.x < newSize.x \|\| currentSize.y < newSize.y;
	}
	}