org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/internal/debug/ui/DetailFormatterDialog.java - jdt/eclipse.jdt.debug - 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.jdt.internal.debug.ui;


 import java.util.List;

 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.jdt.core.IJavaElement;
 import org.eclipse.jdt.core.IType;
 import org.eclipse.jdt.core.JavaCore;
 import org.eclipse.jdt.core.JavaModelException;
 import org.eclipse.jdt.core.search.IJavaSearchConstants;
 import org.eclipse.jdt.core.search.IJavaSearchResultCollector;
 import org.eclipse.jdt.core.search.IJavaSearchScope;
 import org.eclipse.jdt.core.search.SearchEngine;
 import org.eclipse.jdt.internal.debug.ui.display.DisplayViewerConfiguration;
 import org.eclipse.jdt.internal.ui.JavaPlugin;
 import org.eclipse.jdt.internal.ui.dialogs.StatusDialog;
 import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
 import org.eclipse.jdt.ui.IJavaElementSearchConstants;
 import org.eclipse.jdt.ui.JavaUI;
 import org.eclipse.jdt.ui.text.JavaTextTools;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.ProgressMonitorDialog;
 import org.eclipse.jface.text.Document;
 import org.eclipse.jface.text.DocumentEvent;
 import org.eclipse.jface.text.IDocument;
 import org.eclipse.jface.text.IDocumentListener;
 import org.eclipse.jface.text.IDocumentPartitioner;
 import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
 import org.eclipse.jface.text.source.ISourceViewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.VerifyKeyListener;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.VerifyEvent;
 import org.eclipse.swt.graphics.Font;
 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.Event;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Listener;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.dialogs.SelectionDialog;
 import org.eclipse.ui.help.WorkbenchHelp;

 /**
  * Dialog for edit detail formatter.
  */
 public class DetailFormatterDialog extends StatusDialog {

 	/**
 	 * The detail formatter to edit.
 	 */
 	private DetailFormatter fDetailFormatter;

 	// widgets
 	private Text fTypeNameText;
 	private JDISourceViewer fSnippetViewer;
 	private Button fCheckBox;

 	/**
 	 * Indicate if a search for a type with the given name
 	 * have been already performed.
 	 */
 	private boolean fTypeSearched;

 	/**
 	 * Indicate if the type can be modified.
 	 */
 	private boolean fEditTypeName;

 	/**
 	 * The type object which corresponds to the given name.
 	 * If this field is <code>null</code> and <code>fTypeSearched</code> is
 	 * <code>true</code>, that means there is no type with the given name in
 	 * the workspace.
 	 */
 	private IType fType;

 	private List fDefinedTypes;

 	/**
 	 * DetailFormatterDialog constructor.
 	 *
 	 * @param detailFormatter the detail formatter to edit/add.
 	 * @param editDialog flag which indicates if the dialog is used for
 	 * edit an existing formatter, or for enter the info of a new one.
 	 */
 	public DetailFormatterDialog(Shell parent, DetailFormatter detailFormatter, List definedTypes, boolean editDialog) {
 		this(parent, detailFormatter, definedTypes, true, editDialog);
 	}

 	public DetailFormatterDialog(Shell parent, DetailFormatter detailFormatter, List definedTypes, boolean editTypeName, boolean editDialog) {
 		super(parent);
 		fDetailFormatter= detailFormatter;
 		fTypeSearched= false;
 		setShellStyle(getShellStyle() | SWT.MAX | SWT.RESIZE);
 		if (editDialog) {
 			setTitle(DebugUIMessages.getString("DetailFormatterDialog.Edit_Detail_Formatter_1")); //$NON-NLS-1$
 		} else {
 			setTitle(DebugUIMessages.getString("DetailFormatterDialog.Add_Detail_Formatter_2")); //$NON-NLS-1$
 		}
 		fEditTypeName= editTypeName;
 		fDefinedTypes= definedTypes;
 	}

 	/**
 	 * Create the dialog area.
 	 *
 	 * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(Composite)
 	 */
 	protected Control createDialogArea(Composite parent) {
 		WorkbenchHelp.setHelp(
 			parent,
 			IJavaDebugHelpContextIds.EDIT_DETAIL_FORMATTER_DIALOG);

 		Font font = parent.getFont();

 		Composite container = (Composite)super.createDialogArea(parent);

 		// type name label
 		Label label= new Label(container, SWT.NONE);
 		label.setText(DebugUIMessages.getString("DetailFormatterDialog.Qualified_type_&name__2")); //$NON-NLS-1$
 		GridData gd= new GridData(GridData.BEGINNING);
 		label.setLayoutData(gd);
 		label.setFont(font);

 		Composite innerContainer = new Composite(container, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		layout.numColumns = 2;
 		innerContainer.setLayout(layout);
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		innerContainer.setLayoutData(gd);
 		// type name text
 		fTypeNameText= new Text(innerContainer, SWT.SINGLE | SWT.BORDER);
 		fTypeNameText.setEditable(fEditTypeName);
 		fTypeNameText.setText(fDetailFormatter.getTypeName());
 		gd= new GridData(GridData.FILL_HORIZONTAL);
 		fTypeNameText.setLayoutData(gd);
 		fTypeNameText.setFont(font);
 		fTypeNameText.addModifyListener(new ModifyListener() {
 			public void modifyText(ModifyEvent e) {
 				fTypeSearched= false;
 				checkValues();
 			}
 		});

 		// type search button
 		Button typeSearchButton = new Button(innerContainer, SWT.PUSH);
 		typeSearchButton.setText(DebugUIMessages.getString("DetailFormatterDialog.Select_&type_4"));  //$NON-NLS-1$
 		setButtonLayoutData(typeSearchButton);
 		gd= (GridData)typeSearchButton.getLayoutData();
 		gd.horizontalAlignment = GridData.END;
 		typeSearchButton.setLayoutData(gd);
 		typeSearchButton.setFont(font);
 		typeSearchButton.addListener(SWT.Selection, new Listener() {
 			public void handleEvent(Event e) {
 				selectType();
 			}
 		});

 		// snippet label
 		label= new Label(container, SWT.NONE);
 		label.setText(DebugUIMessages.getString("DetailFormatterDialog.Detail_formatter_&code_snippet__1")); //$NON-NLS-1$
 		gd= new GridData(GridData.BEGINNING);
 		label.setLayoutData(gd);
 		label.setFont(font);

 		// snippet viewer
 		fSnippetViewer= new JDISourceViewer(container,  null, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL );
 		fSnippetViewer.setInput(this);

 		JavaTextTools tools= JavaPlugin.getDefault().getJavaTextTools();
 		IDocument document= new Document();
 		IDocumentPartitioner partitioner= tools.createDocumentPartitioner();
 		document.setDocumentPartitioner(partitioner);
 		partitioner.connect(document);
 		fSnippetViewer.configure(new DisplayViewerConfiguration() {
 			public IContentAssistProcessor getContentAssistantProcessor() {
 				return new DetailFormatterCompletionProcessor(DetailFormatterDialog.this);
 			}
 		});
 		fSnippetViewer.setEditable(true);
 		fSnippetViewer.setDocument(document);

 		Control control= fSnippetViewer.getControl();
 		gd= new GridData(GridData.FILL_BOTH);
 		gd.heightHint= convertHeightInCharsToPixels(10);
 		gd.widthHint= convertWidthInCharsToPixels(80);
 		control.setLayoutData(gd);
 		document.set(fDetailFormatter.getSnippet());

 		fSnippetViewer.getTextWidget().addVerifyKeyListener(new VerifyKeyListener() {
 			public void verifyKey(VerifyEvent event) {
 				//do code assist for CTRL-SPACE
 				if (event.stateMask == SWT.CTRL) {
 					if (event.keyCode == ' ') {
 						findCorrespondingType();
 						fSnippetViewer.doOperation(ISourceViewer.CONTENTASSIST_PROPOSALS);
 						event.doit= false;
 					}
 				}
 			}
 		});

 		fSnippetViewer.getDocument().addDocumentListener(new IDocumentListener() {
 			public void documentAboutToBeChanged(DocumentEvent event) {
 			}
 			public void documentChanged(DocumentEvent event) {
 				checkValues();
 			}
 		});

 		// enable checkbox
 		fCheckBox= new Button(container, SWT.CHECK | SWT.LEFT);
 		fCheckBox.setText(DebugUIMessages.getString("DetailFormatterDialog.&Enable_1")); //$NON-NLS-1$
 		fCheckBox.setSelection(fDetailFormatter.isEnabled());
 		fCheckBox.setFont(font);

 		checkValues();
 		return container;
 	}

 	/**
 	 * Check the field values and display a message in the status if needed.
 	 */
 	private void checkValues() {
 		StatusInfo status= new StatusInfo();
 		String typeName= fTypeNameText.getText().trim();
 		if (typeName.length() == 0) {
 			status.setError(DebugUIMessages.getString("DetailFormatterDialog.Qualified_type_name_must_not_be_empty._3")); //$NON-NLS-1$
 		} else if (fDefinedTypes != null && fDefinedTypes.contains(typeName)) {
 			status.setError(DebugUIMessages.getString("DetailFormatterDialog.A_detail_formatter_is_already_defined_for_this_type_2")); //$NON-NLS-1$
 		} else if (fSnippetViewer.getDocument().get().trim().length() == 0) {
 			status.setError(DebugUIMessages.getString("DetailFormatterDialog.Associated_code_must_not_be_empty_3")); //$NON-NLS-1$
 		} else if (fType == null && fTypeSearched) {
 			status.setWarning(DebugUIMessages.getString("No_type_with_the_given_name_found_in_the_workspace._1")); //$NON-NLS-1$
 		}
 		updateStatus(status);
 	}

 	/**
 	 * @see org.eclipse.jface.dialogs.Dialog#okPressed()
 	 */
 	protected void okPressed() {
 		fDetailFormatter.setEnabled(fCheckBox.getSelection());
 		fDetailFormatter.setTypeName(fTypeNameText.getText().trim());
 		fDetailFormatter.setSnippet(fSnippetViewer.getDocument().get());

 		super.okPressed();
 	}

 	/**
 	 * Open the 'select type' dialog, and set the user choice into the formatter.
 	 */
 	private void selectType() {
 		Shell shell= getShell();
 		SelectionDialog dialog= null;
 		try {
 			dialog= JavaUI.createTypeDialog(shell, new ProgressMonitorDialog(shell),
 				SearchEngine.createWorkspaceScope(), IJavaElementSearchConstants.CONSIDER_CLASSES, false);
 		} catch (JavaModelException jme) {
 			String title= DebugUIMessages.getString("DetailFormatterDialog.Select_type_6"); //$NON-NLS-1$
 			String message= DebugUIMessages.getString("DetailFormatterDialog.Could_not_open_type_selection_dialog_for_detail_formatters_7"); //$NON-NLS-1$
 			ExceptionHandler.handle(jme, title, message);
 			return;
 		}

 		dialog.setTitle(DebugUIMessages.getString("DetailFormatterDialog.Select_type_8")); //$NON-NLS-1$
 		dialog.setMessage(DebugUIMessages.getString("DetailFormatterDialog.Select_a_type_to_format_when_displaying_its_detail_9")); //$NON-NLS-1$
 		if (dialog.open() == IDialogConstants.CANCEL_ID) {
 			return;
 		}

 		Object[] types= dialog.getResult();
 		if (types != null && types.length > 0) {
 			fType = (IType)types[0];
 			fTypeNameText.setText(fType.getFullyQualifiedName());
 		}
 	}

 	/**
 	 * Use the Java search engine to find the type which corresponds
 	 * to the given name.
 	 */
 	private void findCorrespondingType() {
 		if (fTypeSearched) {
 			return;
 		}
 		fType= null;
 		fTypeSearched= true;
 		final String pattern= fTypeNameText.getText().trim();
 		if (pattern == null || "".equals(pattern)) { //$NON-NLS-1$
 			return;
 		}
 		final IJavaSearchResultCollector collector= new IJavaSearchResultCollector() {
 			private boolean fFirst= true;

 			public void aboutToStart() {
 			}

 			public void accept(IResource resource, int start, int end, IJavaElement enclosingElement, int accuracy) {
 				if (!fFirst) {
 					return;
 				}
 				fFirst= false;
 				if (enclosingElement instanceof IType) {
 					fType= (IType) enclosingElement;
 				}
 			}

 			public void done() {
 				checkValues();
 			}

 			public IProgressMonitor getProgressMonitor() {
 				return null;
 			}
 		};

 		SearchEngine engine= new SearchEngine(JavaCore.getWorkingCopies(null));
 		IJavaSearchScope scope= SearchEngine.createWorkspaceScope();
 		try {
 			engine.search(JavaPlugin.getWorkspace(), SearchEngine.createSearchPattern(pattern, IJavaSearchConstants.TYPE, IJavaSearchConstants.DECLARATIONS, true), scope, collector);
 		} catch (JavaModelException e) {
 		}
 	}

 	/**
 	 * Return the type object which corresponds to the given name.
 	 */
 	public IType getType() {
 		if (!fTypeSearched) {
 			findCorrespondingType();
 		}
 		return fType;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jface.window.Window#close()
 	 */
 	public boolean close() {
 		fSnippetViewer.dispose();
 		return super.close();
 	}

 }
	/*******************************************************************************
	* 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.jdt.internal.debug.ui;


	import java.util.List;

	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.jdt.core.IJavaElement;
	import org.eclipse.jdt.core.IType;
	import org.eclipse.jdt.core.JavaCore;
	import org.eclipse.jdt.core.JavaModelException;
	import org.eclipse.jdt.core.search.IJavaSearchConstants;
	import org.eclipse.jdt.core.search.IJavaSearchResultCollector;
	import org.eclipse.jdt.core.search.IJavaSearchScope;
	import org.eclipse.jdt.core.search.SearchEngine;
	import org.eclipse.jdt.internal.debug.ui.display.DisplayViewerConfiguration;
	import org.eclipse.jdt.internal.ui.JavaPlugin;
	import org.eclipse.jdt.internal.ui.dialogs.StatusDialog;
	import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
	import org.eclipse.jdt.ui.IJavaElementSearchConstants;
	import org.eclipse.jdt.ui.JavaUI;
	import org.eclipse.jdt.ui.text.JavaTextTools;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.ProgressMonitorDialog;
	import org.eclipse.jface.text.Document;
	import org.eclipse.jface.text.DocumentEvent;
	import org.eclipse.jface.text.IDocument;
	import org.eclipse.jface.text.IDocumentListener;
	import org.eclipse.jface.text.IDocumentPartitioner;
	import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
	import org.eclipse.jface.text.source.ISourceViewer;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.VerifyKeyListener;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.VerifyEvent;
	import org.eclipse.swt.graphics.Font;
	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.Event;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Listener;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.dialogs.SelectionDialog;
	import org.eclipse.ui.help.WorkbenchHelp;

	/**
	* Dialog for edit detail formatter.
	*/
	public class DetailFormatterDialog extends StatusDialog {

	/**
	* The detail formatter to edit.
	*/
	private DetailFormatter fDetailFormatter;

	// widgets
	private Text fTypeNameText;
	private JDISourceViewer fSnippetViewer;
	private Button fCheckBox;

	/**
	* Indicate if a search for a type with the given name
	* have been already performed.
	*/
	private boolean fTypeSearched;

	/**
	* Indicate if the type can be modified.
	*/
	private boolean fEditTypeName;

	/**
	* The type object which corresponds to the given name.
	* If this field is <code>null</code> and <code>fTypeSearched</code> is
	* <code>true</code>, that means there is no type with the given name in
	* the workspace.
	*/
	private IType fType;

	private List fDefinedTypes;

	/**
	* DetailFormatterDialog constructor.
	*
	* @param detailFormatter the detail formatter to edit/add.
	* @param editDialog flag which indicates if the dialog is used for
	* edit an existing formatter, or for enter the info of a new one.
	*/
	public DetailFormatterDialog(Shell parent, DetailFormatter detailFormatter, List definedTypes, boolean editDialog) {
	this(parent, detailFormatter, definedTypes, true, editDialog);
	}

	public DetailFormatterDialog(Shell parent, DetailFormatter detailFormatter, List definedTypes, boolean editTypeName, boolean editDialog) {
	super(parent);
	fDetailFormatter= detailFormatter;
	fTypeSearched= false;
	setShellStyle(getShellStyle() \| SWT.MAX \| SWT.RESIZE);
	if (editDialog) {
	setTitle(DebugUIMessages.getString("DetailFormatterDialog.Edit_Detail_Formatter_1")); //$NON-NLS-1$
	} else {
	setTitle(DebugUIMessages.getString("DetailFormatterDialog.Add_Detail_Formatter_2")); //$NON-NLS-1$
	}
	fEditTypeName= editTypeName;
	fDefinedTypes= definedTypes;
	}

	/**
	* Create the dialog area.
	*
	* @see org.eclipse.jface.dialogs.Dialog#createDialogArea(Composite)
	*/
	protected Control createDialogArea(Composite parent) {
	WorkbenchHelp.setHelp(
	parent,
	IJavaDebugHelpContextIds.EDIT_DETAIL_FORMATTER_DIALOG);

	Font font = parent.getFont();

	Composite container = (Composite)super.createDialogArea(parent);

	// type name label
	Label label= new Label(container, SWT.NONE);
	label.setText(DebugUIMessages.getString("DetailFormatterDialog.Qualified_type_&name__2")); //$NON-NLS-1$
	GridData gd= new GridData(GridData.BEGINNING);
	label.setLayoutData(gd);
	label.setFont(font);

	Composite innerContainer = new Composite(container, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	layout.numColumns = 2;
	innerContainer.setLayout(layout);
	gd = new GridData(GridData.FILL_HORIZONTAL);
	innerContainer.setLayoutData(gd);
	// type name text
	fTypeNameText= new Text(innerContainer, SWT.SINGLE \| SWT.BORDER);
	fTypeNameText.setEditable(fEditTypeName);
	fTypeNameText.setText(fDetailFormatter.getTypeName());
	gd= new GridData(GridData.FILL_HORIZONTAL);
	fTypeNameText.setLayoutData(gd);
	fTypeNameText.setFont(font);
	fTypeNameText.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	fTypeSearched= false;
	checkValues();
	}
	});

	// type search button
	Button typeSearchButton = new Button(innerContainer, SWT.PUSH);
	typeSearchButton.setText(DebugUIMessages.getString("DetailFormatterDialog.Select_&type_4")); //$NON-NLS-1$
	setButtonLayoutData(typeSearchButton);
	gd= (GridData)typeSearchButton.getLayoutData();
	gd.horizontalAlignment = GridData.END;
	typeSearchButton.setLayoutData(gd);
	typeSearchButton.setFont(font);
	typeSearchButton.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event e) {
	selectType();
	}
	});

	// snippet label
	label= new Label(container, SWT.NONE);
	label.setText(DebugUIMessages.getString("DetailFormatterDialog.Detail_formatter_&code_snippet__1")); //$NON-NLS-1$
	gd= new GridData(GridData.BEGINNING);
	label.setLayoutData(gd);
	label.setFont(font);

	// snippet viewer
	fSnippetViewer= new JDISourceViewer(container, null, SWT.BORDER \| SWT.V_SCROLL \| SWT.H_SCROLL );
	fSnippetViewer.setInput(this);

	JavaTextTools tools= JavaPlugin.getDefault().getJavaTextTools();
	IDocument document= new Document();
	IDocumentPartitioner partitioner= tools.createDocumentPartitioner();
	document.setDocumentPartitioner(partitioner);
	partitioner.connect(document);
	fSnippetViewer.configure(new DisplayViewerConfiguration() {
	public IContentAssistProcessor getContentAssistantProcessor() {
	return new DetailFormatterCompletionProcessor(DetailFormatterDialog.this);
	}
	});
	fSnippetViewer.setEditable(true);
	fSnippetViewer.setDocument(document);

	Control control= fSnippetViewer.getControl();
	gd= new GridData(GridData.FILL_BOTH);
	gd.heightHint= convertHeightInCharsToPixels(10);
	gd.widthHint= convertWidthInCharsToPixels(80);
	control.setLayoutData(gd);
	document.set(fDetailFormatter.getSnippet());

	fSnippetViewer.getTextWidget().addVerifyKeyListener(new VerifyKeyListener() {
	public void verifyKey(VerifyEvent event) {
	//do code assist for CTRL-SPACE
	if (event.stateMask == SWT.CTRL) {
	if (event.keyCode == ' ') {
	findCorrespondingType();
	fSnippetViewer.doOperation(ISourceViewer.CONTENTASSIST_PROPOSALS);
	event.doit= false;
	}
	}
	}
	});

	fSnippetViewer.getDocument().addDocumentListener(new IDocumentListener() {
	public void documentAboutToBeChanged(DocumentEvent event) {
	}
	public void documentChanged(DocumentEvent event) {
	checkValues();
	}
	});

	// enable checkbox
	fCheckBox= new Button(container, SWT.CHECK \| SWT.LEFT);
	fCheckBox.setText(DebugUIMessages.getString("DetailFormatterDialog.&Enable_1")); //$NON-NLS-1$
	fCheckBox.setSelection(fDetailFormatter.isEnabled());
	fCheckBox.setFont(font);

	checkValues();
	return container;
	}

	/**
	* Check the field values and display a message in the status if needed.
	*/
	private void checkValues() {
	StatusInfo status= new StatusInfo();
	String typeName= fTypeNameText.getText().trim();
	if (typeName.length() == 0) {
	status.setError(DebugUIMessages.getString("DetailFormatterDialog.Qualified_type_name_must_not_be_empty._3")); //$NON-NLS-1$
	} else if (fDefinedTypes != null && fDefinedTypes.contains(typeName)) {
	status.setError(DebugUIMessages.getString("DetailFormatterDialog.A_detail_formatter_is_already_defined_for_this_type_2")); //$NON-NLS-1$
	} else if (fSnippetViewer.getDocument().get().trim().length() == 0) {
	status.setError(DebugUIMessages.getString("DetailFormatterDialog.Associated_code_must_not_be_empty_3")); //$NON-NLS-1$
	} else if (fType == null && fTypeSearched) {
	status.setWarning(DebugUIMessages.getString("No_type_with_the_given_name_found_in_the_workspace._1")); //$NON-NLS-1$
	}
	updateStatus(status);
	}

	/**
	* @see org.eclipse.jface.dialogs.Dialog#okPressed()
	*/
	protected void okPressed() {
	fDetailFormatter.setEnabled(fCheckBox.getSelection());
	fDetailFormatter.setTypeName(fTypeNameText.getText().trim());
	fDetailFormatter.setSnippet(fSnippetViewer.getDocument().get());

	super.okPressed();
	}

	/**
	* Open the 'select type' dialog, and set the user choice into the formatter.
	*/
	private void selectType() {
	Shell shell= getShell();
	SelectionDialog dialog= null;
	try {
	dialog= JavaUI.createTypeDialog(shell, new ProgressMonitorDialog(shell),
	SearchEngine.createWorkspaceScope(), IJavaElementSearchConstants.CONSIDER_CLASSES, false);
	} catch (JavaModelException jme) {
	String title= DebugUIMessages.getString("DetailFormatterDialog.Select_type_6"); //$NON-NLS-1$
	String message= DebugUIMessages.getString("DetailFormatterDialog.Could_not_open_type_selection_dialog_for_detail_formatters_7"); //$NON-NLS-1$
	ExceptionHandler.handle(jme, title, message);
	return;
	}

	dialog.setTitle(DebugUIMessages.getString("DetailFormatterDialog.Select_type_8")); //$NON-NLS-1$
	dialog.setMessage(DebugUIMessages.getString("DetailFormatterDialog.Select_a_type_to_format_when_displaying_its_detail_9")); //$NON-NLS-1$
	if (dialog.open() == IDialogConstants.CANCEL_ID) {
	return;
	}

	Object[] types= dialog.getResult();
	if (types != null && types.length > 0) {
	fType = (IType)types[0];
	fTypeNameText.setText(fType.getFullyQualifiedName());
	}
	}

	/**
	* Use the Java search engine to find the type which corresponds
	* to the given name.
	*/
	private void findCorrespondingType() {
	if (fTypeSearched) {
	return;
	}
	fType= null;
	fTypeSearched= true;
	final String pattern= fTypeNameText.getText().trim();
	if (pattern == null \|\| "".equals(pattern)) { //$NON-NLS-1$
	return;
	}
	final IJavaSearchResultCollector collector= new IJavaSearchResultCollector() {
	private boolean fFirst= true;

	public void aboutToStart() {
	}

	public void accept(IResource resource, int start, int end, IJavaElement enclosingElement, int accuracy) {
	if (!fFirst) {
	return;
	}
	fFirst= false;
	if (enclosingElement instanceof IType) {
	fType= (IType) enclosingElement;
	}
	}

	public void done() {
	checkValues();
	}

	public IProgressMonitor getProgressMonitor() {
	return null;
	}
	};

	SearchEngine engine= new SearchEngine(JavaCore.getWorkingCopies(null));
	IJavaSearchScope scope= SearchEngine.createWorkspaceScope();
	try {
	engine.search(JavaPlugin.getWorkspace(), SearchEngine.createSearchPattern(pattern, IJavaSearchConstants.TYPE, IJavaSearchConstants.DECLARATIONS, true), scope, collector);
	} catch (JavaModelException e) {
	}
	}

	/**
	* Return the type object which corresponds to the given name.
	*/
	public IType getType() {
	if (!fTypeSearched) {
	findCorrespondingType();
	}
	return fType;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jface.window.Window#close()
	*/
	public boolean close() {
	fSnippetViewer.dispose();
	return super.close();
	}

	}