bundles/org.eclipse.team.cvs.ui/src/org/eclipse/team/internal/ccvs/ui/wizards/GenerateDiffFileWizard.java - gerrit/platform/eclipse.platform.team - Git at Google

 package org.eclipse.team.internal.ccvs.ui.wizards;

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

 import java.io.File;
 import java.lang.reflect.InvocationTargetException;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.List;

 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.jface.dialogs.ErrorDialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.viewers.DoubleClickEvent;
 import org.eclipse.jface.viewers.IDoubleClickListener;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.TreeViewer;
 import org.eclipse.jface.wizard.Wizard;
 import org.eclipse.jface.wizard.WizardPage;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 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.Display;
 import org.eclipse.swt.widgets.Event;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Listener;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.team.internal.ccvs.core.client.Diff;
 import org.eclipse.team.internal.ccvs.core.client.Command.LocalOption;
 import org.eclipse.team.internal.ccvs.ui.CVSUIPlugin;
 import org.eclipse.team.internal.ccvs.ui.Policy;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.internal.misc.ContainerContentProvider;
 import org.eclipse.ui.internal.misc.ResourceAndContainerGroup;
 import org.eclipse.ui.model.WorkbenchLabelProvider;

 /**
  * A wizard for creating a patch file by running the CVS diff command.
  */
 public class GenerateDiffFileWizard extends Wizard {

 	private PatchFileSelectionPage mainPage;
 	private PatchFileCreationOptionsPage optionsPage;

 	private IStructuredSelection selection;
 	private IResource resource;

 	/**
 	 * Page to select a patch file. Overriding validatePage was necessary to allow
 	 * entering a file name that already exists.
 	 */
 	private class PatchFileSelectionPage extends WizardPage {

 		private IStructuredSelection currentSelection;
 		private ResourceAndContainerGroup resourceGroup;
 		private Text filenameCombo;
 		private Button browseButton;

 		private TreeViewer treeViewer;
 		private IContainer selectedContainer;
 		private Text workspaceFilename;
 		private Button saveInFilesystem;
 		private Button saveInWorkspace;
 		private Button saveToClipboard;

 		public final int CLIPBOARD = 1;
 		public final int FILESYSTEM = 2;
 		public final int WORKSPACE = 3;

 		// sizing constants
 		private static final int SIZING_SELECTION_PANE_HEIGHT = 125;
 		private static final int SIZING_SELECTION_PANE_WIDTH = 200;

 		PatchFileSelectionPage(String pageName, IStructuredSelection selection) {
 			super(pageName);
 			this.currentSelection = selection;
 			setPageComplete(false);
 		}

 		/**
 		 * Allow the user to finish if a valid file has been entered.
 		 */
 		protected boolean validatePage() {
 			boolean valid = false;

 			switch(getSaveType()) {
 				case WORKSPACE:
 					if(selectedContainer!=null && getWorkspaceFile()!=null) {
 						valid = true;
 					}
 					break;
 				case FILESYSTEM:
 					if(new File(getFilesystemFile()).isAbsolute()) {
 					valid = true;
 					}
 					break;
 				case CLIPBOARD:
 					valid = true;
 					break;
 			}

 			// Avoid draw flicker by clearing error message
 			// if all is valid.
 			if (valid) {
 				setMessage(null);
 				setErrorMessage(null);
 			} else {
 				setErrorMessage(Policy.bind("Enter_a_valid_file_name_or_select_the_clipboard_option_1")); //$NON-NLS-1$
 			}
 			setPageComplete(valid);
 			return valid;
 		}

 		/**
 		 * Answers a full path to a file system file or <code>null</code> if the user
 		 * selected to save the patch in the workspace.
 		 */
 		public String getFilesystemFile() {
 			if(saveInFilesystem.getSelection()) {
 				return filenameCombo.getText();
 			}
 			return null;
 		}

 		/**
 		 * Answers a workspace file or <code>null</code> if the user selected to save
 		 * the patch outside of the workspace.
 		 */
 		public IFile getWorkspaceFile() {
 			if(saveInWorkspace.getSelection() && selectedContainer !=null) {
 				String filename = workspaceFilename.getText();
 				if(filename==null || filename.length() == 0) {
 					return null;
 				}
 				return selectedContainer.getFile(new Path(workspaceFilename.getText()));
 			}
 			return null;
 		}

 		/**
 		 * Allow the user to chose to save the patch to the workspace or outside
 		 * of the workspace.
 		 */
 		public void createControl(Composite parent) {

 			Composite composite= new Composite(parent, SWT.NULL);
 			GridLayout layout= new GridLayout();
 			composite.setLayout(layout);
 			composite.setLayoutData(new GridData());
 			setControl(composite);

 			// Clipboard
 			saveToClipboard= new Button(composite, SWT.RADIO);
 			saveToClipboard.setText(Policy.bind("Save_To_Clipboard_2")); //$NON-NLS-1$
 			saveToClipboard.addListener(SWT.Selection, new Listener() {
 				public void handleEvent(Event event) {
 					validatePage();
 					updateEnablements();
 				}
 			});

 			// File System
 			saveInFilesystem= new Button(composite, SWT.RADIO);
 			saveInFilesystem.setText(Policy.bind("Save_In_File_System_3")); //$NON-NLS-1$
 			saveInFilesystem.addListener(SWT.Selection, new Listener() {
 				public void handleEvent(Event event) {
 					validatePage();
 					updateEnablements();
 				}
 			});

 			Composite nameGroup = new Composite(composite,SWT.NONE);
 			layout = new GridLayout();
 			layout.numColumns = 2;
 			layout.marginWidth = 0;
 			nameGroup.setLayout(layout);
 			GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL);
 			nameGroup.setLayoutData(data);

 			filenameCombo= new Text(nameGroup, SWT.BORDER);
 			GridData gd= new GridData(GridData.FILL_HORIZONTAL);
 			filenameCombo.setLayoutData(gd);
 			filenameCombo.addModifyListener(new ModifyListener() {
 				public void modifyText(ModifyEvent e) {
 					validatePage();
 				}
 			});

 			browseButton = new Button(nameGroup, SWT.NULL);
 			browseButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_END));
 			browseButton.setText(Policy.bind("Browse..._4")); //$NON-NLS-1$
 			browseButton.addListener(SWT.Selection, new Listener() {
 				public void handleEvent(Event event) {
 					FileDialog d = new FileDialog(getShell());
 					d.setText(Policy.bind("Save_Patch_As_5")); //$NON-NLS-1$
 					d.setFileName(Policy.bind("patch.txt_6")); //$NON-NLS-1$
 					String file = d.open();
 					if(file!=null) {
 						IPath path = new Path(file);
 						setFilesystemFilename(path.toOSString());
 					}
 				}
 			});

 			// Workspace
 			saveInWorkspace= new Button(composite, SWT.RADIO);
 			saveInWorkspace.setText(Policy.bind("Save_In_Workspace_7")); //$NON-NLS-1$
 			saveInWorkspace.addListener(SWT.Selection, new Listener() {
 				public void handleEvent(Event event) {
 					validatePage();
 					updateEnablements();
 				}
 			});
 			createTreeViewer(composite);
 		}

 		/**
 		 * Sets the file name in the file system text.
 		 */
 		protected void setFilesystemFilename(String filename) {
 			filenameCombo.setText(filename);
 		}

 		/**
 		 * Create the tree viewer that shows the container available in the workspace. The user
 		 * can then enter a filename in the text box below the viewer.
 		 */
 		protected void createTreeViewer(Composite parent) {
 			// Create tree viewer inside drill down.
 			new Label(parent, SWT.LEFT).setText(Policy.bind("Select_a_folder_then_type_in_the_file_name__8"));		 //$NON-NLS-1$

 			treeViewer = new TreeViewer(parent, SWT.BORDER);
 			ContainerContentProvider cp = new ContainerContentProvider();
 			cp.showClosedProjects(false);
 			GridData data = new GridData(GridData.VERTICAL_ALIGN_FILL | GridData.HORIZONTAL_ALIGN_FILL |
 								  		  GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL);

 			data.widthHint = SIZING_SELECTION_PANE_WIDTH;
 			data.heightHint = SIZING_SELECTION_PANE_HEIGHT;

 			treeViewer.getTree().setLayoutData(data);
 			treeViewer.setContentProvider(cp);
 			treeViewer.setLabelProvider(new WorkbenchLabelProvider());
 			treeViewer.addSelectionChangedListener(
 				new ISelectionChangedListener() {
 					public void selectionChanged(SelectionChangedEvent event) {
 						IStructuredSelection selection = (IStructuredSelection)event.getSelection();
 						containerSelectionChanged((IContainer) selection.getFirstElement()); // allow null
 						validatePage();
 					}
 				});

 			treeViewer.addDoubleClickListener(
 				new IDoubleClickListener() {
 					public void doubleClick(DoubleClickEvent event) {
 						ISelection selection = event.getSelection();
 						if (selection instanceof IStructuredSelection) {
 							Object item = ((IStructuredSelection)selection).getFirstElement();
 							if (treeViewer.getExpandedState(item))
 								treeViewer.collapseToLevel(item, 1);
 							else
 								treeViewer.expandToLevel(item, 1);
 						}
 					}
 				});

 			// This has to be done after the viewer has been laid out
 			treeViewer.setInput(ResourcesPlugin.getWorkspace());

 			// name group
 			Composite nameGroup = new Composite(parent,SWT.NONE);
 			GridLayout layout = new GridLayout();
 			layout.numColumns = 2;
 			layout.marginWidth = 0;
 			nameGroup.setLayout(layout);
 			data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL);
 			nameGroup.setLayoutData(data);

 			Label label = new Label(nameGroup,SWT.NONE);
 			label.setText(Policy.bind("Fi&le_name__9")); //$NON-NLS-1$

 			// resource name entry field
 			workspaceFilename = new Text(nameGroup,SWT.BORDER);
 			data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL);
 			workspaceFilename.setLayoutData(data);
 			workspaceFilename.addModifyListener(new ModifyListener() {
 				public void modifyText(ModifyEvent e) {
 					validatePage();
 				}
 			});
 		}

 		/**
 		 * Enable and disable controls based on the selected radio button.
 		 */
 		protected void updateEnablements() {
 			int type = getSaveType();

 			browseButton.setEnabled(type==FILESYSTEM);
 			filenameCombo.setEnabled(type==FILESYSTEM);
 			treeViewer.getTree().setEnabled(type==WORKSPACE);
 			workspaceFilename.setEnabled(type==WORKSPACE);
 		}

 		/**
 		 * Answers the type of the patch file destination.
 		 */
 		public int getSaveType() {
 			if(saveInFilesystem.getSelection()) {
 				return FILESYSTEM;
 			} else if(saveToClipboard.getSelection()) {
 				return CLIPBOARD;
 			} else {
 				return WORKSPACE;
 			}
 		}

 		/**
 		 * Remember the container selected in the tree viewer.
 		 */
 		public void containerSelectionChanged(IContainer container) {
 			selectedContainer = container;
 		}
 	}
 	// end of PatchFileSelectionPage

 	/**
 	 * Page to select the options for creating the patch.
 	 */
 	public class PatchFileCreationOptionsPage extends WizardPage {

 		private Button recurseOption;
 		private Button contextDiffOption;
 		private Button unifiedDiffOption;
 		private Button regularDiffOption;
 		private Button includeNewFilesOptions;

 		/**
 		 * Constructor for PatchFileCreationOptionsPage.
 		 */
 		protected PatchFileCreationOptionsPage(String pageName) {
 			super(pageName);
 		}

 		/**
 		 * Constructor for PatchFileCreationOptionsPage.
 		 */
 		protected PatchFileCreationOptionsPage(String pageName, String title, ImageDescriptor titleImage) {
 			super(pageName, title, titleImage);
 		}

 		/*
 		 * @see IDialogPage#createControl(Composite)
 		 */
 		public void createControl(Composite parent) {
 			Composite composite= new Composite(parent, SWT.NULL);
 			GridLayout layout= new GridLayout();
 			composite.setLayout(layout);
 			composite.setLayoutData(new GridData());
 			setControl(composite);

 			recurseOption = new Button(composite, SWT.CHECK);
 			recurseOption.setText(Policy.bind("Do_not_recurse_into_sub-folders_10")); //$NON-NLS-1$
 			recurseOption.setSelection(true);

 			includeNewFilesOptions = new Button(composite, SWT.CHECK);
 			includeNewFilesOptions.setText(Policy.bind("Do_not_include_new_files_in_patch_11")); //$NON-NLS-1$
 			includeNewFilesOptions.setSelection(true);

 			Group diffTypeGroup = new Group(composite, SWT.NONE);
 			layout = new GridLayout();
 			layout.marginHeight = 0;
 			diffTypeGroup.setLayout(layout);
 			GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL);
 			diffTypeGroup.setLayoutData(data);
 			diffTypeGroup.setText(Policy.bind("Diff_output_format_12")); //$NON-NLS-1$

 			unifiedDiffOption = new Button(diffTypeGroup, SWT.RADIO);
 			unifiedDiffOption.setText(Policy.bind("Unified_(format_required_by_Compare_With_Patch_feature)_13")); //$NON-NLS-1$
 			unifiedDiffOption.setSelection(true);
 			contextDiffOption = new Button(diffTypeGroup, SWT.RADIO);
 			contextDiffOption.setText(Policy.bind("Context_14")); //$NON-NLS-1$
 			regularDiffOption = new Button(diffTypeGroup, SWT.RADIO);
 			regularDiffOption.setText(Policy.bind("Standard_15")); //$NON-NLS-1$
 		}

 		/**
 		 * Answers if the difference operation should be run recursively.
 		 */
 		public boolean isRecursive() {
 			return !recurseOption.getSelection();
 		}

 		/**
 		 * Return the list of Diff command options configured on this page.
 		 */
 		public LocalOption[] getOptions() {
 			List options = new ArrayList(5);
 			if(includeNewFilesOptions.getSelection()) {
 				options.add(Diff.INCLUDE_NEWFILES);
 			}
 			if(!recurseOption.getSelection()) {
 				options.add(Diff.DO_NOT_RECURSE);
 			}
 			if(unifiedDiffOption.getSelection()) {
 				options.add(Diff.UNIFIED_FORMAT);
 			} else if(contextDiffOption.getSelection()) {
 				options.add(Diff.CONTEXT_FORMAT);
 			}
 			return (LocalOption[]) options.toArray(new LocalOption[options.size()]);
 		}
 	}
 	// end of PatchFileCreationOptionsPage

 	public GenerateDiffFileWizard(IStructuredSelection selection, IResource resource) {
 		super();
 		this.selection = selection;
 		this.resource = resource;
 		setWindowTitle(Policy.bind("GenerateCVSDiff.title")); //$NON-NLS-1$
 		initializeDefaultPageImageDescriptor();
 	}

 	public void addPages() {
 		String pageTitle =Policy.bind("GenerateCVSDiff.pageTitle"); //$NON-NLS-1$
 		String pageDescription = Policy.bind("GenerateCVSDiff.pageDescription"); //$NON-NLS-1$
 		mainPage = new PatchFileSelectionPage(pageTitle, selection);
 		mainPage.setDescription(pageDescription);
 		mainPage.setTitle(pageTitle);
 		addPage(mainPage);

 		pageTitle = Policy.bind("Advanced_options_19"); //$NON-NLS-1$
 		pageDescription = Policy.bind("Configure_the_options_used_for_the_CVS_diff_command_20"); //$NON-NLS-1$
 		optionsPage = new PatchFileCreationOptionsPage(pageTitle);
 		optionsPage.setDescription(pageDescription);
 		optionsPage.setTitle(pageTitle);
 		addPage(optionsPage);
 	}

 	/**
 	 * Initializes this creation wizard using the passed workbench and
 	 * object selection.
 	 *
 	 * @param workbench the current workbench
 	 * @param selection the current object selection
 	 */
 	public void init(IWorkbench workbench, IStructuredSelection selection) {
 	}
 	/**
 	 * Declares the wizard banner iamge descriptor
 	 */
 	protected void initializeDefaultPageImageDescriptor() {
 		String iconPath;
 		if (Display.getCurrent().getIconDepth() > 4) {
 			iconPath = "icons/full/"; //$NON-NLS-1$
 		} else {
 			iconPath = "icons/basic/"; //$NON-NLS-1$
 		}
 		try {
 			URL installURL = CVSUIPlugin.getPlugin().getDescriptor().getInstallURL();
 			URL url = new URL(installURL, iconPath + "wizards/newconnect_wiz.gif");	//$NON-NLS-1$
 			ImageDescriptor desc = ImageDescriptor.createFromURL(url);
 			setDefaultPageImageDescriptor(desc);
 		} catch (MalformedURLException e) {
 			// Should not happen.  Ignore.
 		}
 	}

 	/* (Non-javadoc)
 	 * Method declared on IWizard.
 	 */
 	public boolean needsProgressMonitor() {
 		return true;
 	}
 	/**
 	 * Completes processing of the wizard. If this method returns <code>
 	 * true</code>, the wizard will close; otherwise, it will stay active.
 	 */
 	public boolean performFinish() {
 		String fs = mainPage.getFilesystemFile();
 		IFile ws = mainPage.getWorkspaceFile();
 		int type = mainPage.getSaveType();

 		try {
 			if(type != mainPage.CLIPBOARD) {
 				File file = new File(fs!=null ? fs : ws.getLocation().toOSString());
 				if (file.exists()) {
 					// prompt then delete
 					String title = Policy.bind("GenerateCVSDiff.overwriteTitle"); //$NON-NLS-1$
 					String msg = Policy.bind("GenerateCVSDiff.overwriteMsg"); //$NON-NLS-1$
 					final MessageDialog dialog = new MessageDialog(getShell(), title, null, msg, MessageDialog.QUESTION, new String[] { IDialogConstants.YES_LABEL, IDialogConstants.CANCEL_LABEL }, 0);

 					dialog.open();

 					if (dialog.getReturnCode() != 0) {
 						// cancel
 						return false;
 					}
 				}
 				getContainer().run(false, true, new GenerateDiffFileOperation(resource, file, false, optionsPage.getOptions(), getShell()));
 				if(type==mainPage.WORKSPACE) {
 					ws.getParent().refreshLocal(IResource.DEPTH_ONE, null);
 				}
 			} else {
 				getContainer().run(false, true, new GenerateDiffFileOperation(resource, null, true, optionsPage.getOptions(), getShell()));
 			}
 			return true;
 		} catch (InterruptedException e1) {
 			return true;
 		} catch(CoreException e) {
 			ErrorDialog.openError(getShell(), Policy.bind("GenerateCVSDiff.error"), null, e.getStatus()); //$NON-NLS-1$
 			return false;
 		} catch (InvocationTargetException e2) {
 			if (e2.getTargetException() instanceof CoreException) {
 				CoreException e = (CoreException) e2.getTargetException();
 				ErrorDialog.openError(getShell(), Policy.bind("GenerateCVSDiff.error"), null, e.getStatus()); //$NON-NLS-1$
 				return false;
 			} else {
 				Throwable target = e2.getTargetException();
 				if (target instanceof RuntimeException) {
 					throw (RuntimeException) target;
 				}
 				if (target instanceof Error) {
 					throw (Error) target;
 				}
 			}
 			return true;
 		}
 	}
 }
	package org.eclipse.team.internal.ccvs.ui.wizards;

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

	import java.io.File;
	import java.lang.reflect.InvocationTargetException;
	import java.net.MalformedURLException;
	import java.net.URL;
	import java.util.ArrayList;
	import java.util.List;

	import org.eclipse.core.resources.IContainer;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.jface.dialogs.ErrorDialog;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.resource.ImageDescriptor;
	import org.eclipse.jface.viewers.DoubleClickEvent;
	import org.eclipse.jface.viewers.IDoubleClickListener;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.TreeViewer;
	import org.eclipse.jface.wizard.Wizard;
	import org.eclipse.jface.wizard.WizardPage;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	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.Display;
	import org.eclipse.swt.widgets.Event;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Listener;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.team.internal.ccvs.core.client.Diff;
	import org.eclipse.team.internal.ccvs.core.client.Command.LocalOption;
	import org.eclipse.team.internal.ccvs.ui.CVSUIPlugin;
	import org.eclipse.team.internal.ccvs.ui.Policy;
	import org.eclipse.ui.IWorkbench;
	import org.eclipse.ui.internal.misc.ContainerContentProvider;
	import org.eclipse.ui.internal.misc.ResourceAndContainerGroup;
	import org.eclipse.ui.model.WorkbenchLabelProvider;

	/**
	* A wizard for creating a patch file by running the CVS diff command.
	*/
	public class GenerateDiffFileWizard extends Wizard {

	private PatchFileSelectionPage mainPage;
	private PatchFileCreationOptionsPage optionsPage;

	private IStructuredSelection selection;
	private IResource resource;

	/**
	* Page to select a patch file. Overriding validatePage was necessary to allow
	* entering a file name that already exists.
	*/
	private class PatchFileSelectionPage extends WizardPage {

	private IStructuredSelection currentSelection;
	private ResourceAndContainerGroup resourceGroup;
	private Text filenameCombo;
	private Button browseButton;

	private TreeViewer treeViewer;
	private IContainer selectedContainer;
	private Text workspaceFilename;
	private Button saveInFilesystem;
	private Button saveInWorkspace;
	private Button saveToClipboard;

	public final int CLIPBOARD = 1;
	public final int FILESYSTEM = 2;
	public final int WORKSPACE = 3;

	// sizing constants
	private static final int SIZING_SELECTION_PANE_HEIGHT = 125;
	private static final int SIZING_SELECTION_PANE_WIDTH = 200;

	PatchFileSelectionPage(String pageName, IStructuredSelection selection) {
	super(pageName);
	this.currentSelection = selection;
	setPageComplete(false);
	}

	/**
	* Allow the user to finish if a valid file has been entered.
	*/
	protected boolean validatePage() {
	boolean valid = false;

	switch(getSaveType()) {
	case WORKSPACE:
	if(selectedContainer!=null && getWorkspaceFile()!=null) {
	valid = true;
	}
	break;
	case FILESYSTEM:
	if(new File(getFilesystemFile()).isAbsolute()) {
	valid = true;
	}
	break;
	case CLIPBOARD:
	valid = true;
	break;
	}

	// Avoid draw flicker by clearing error message
	// if all is valid.
	if (valid) {
	setMessage(null);
	setErrorMessage(null);
	} else {
	setErrorMessage(Policy.bind("Enter_a_valid_file_name_or_select_the_clipboard_option_1")); //$NON-NLS-1$
	}
	setPageComplete(valid);
	return valid;
	}

	/**
	* Answers a full path to a file system file or <code>null</code> if the user
	* selected to save the patch in the workspace.
	*/
	public String getFilesystemFile() {
	if(saveInFilesystem.getSelection()) {
	return filenameCombo.getText();
	}
	return null;
	}

	/**
	* Answers a workspace file or <code>null</code> if the user selected to save
	* the patch outside of the workspace.
	*/
	public IFile getWorkspaceFile() {
	if(saveInWorkspace.getSelection() && selectedContainer !=null) {
	String filename = workspaceFilename.getText();
	if(filename==null \|\| filename.length() == 0) {
	return null;
	}
	return selectedContainer.getFile(new Path(workspaceFilename.getText()));
	}
	return null;
	}

	/**
	* Allow the user to chose to save the patch to the workspace or outside
	* of the workspace.
	*/
	public void createControl(Composite parent) {

	Composite composite= new Composite(parent, SWT.NULL);
	GridLayout layout= new GridLayout();
	composite.setLayout(layout);
	composite.setLayoutData(new GridData());
	setControl(composite);

	// Clipboard
	saveToClipboard= new Button(composite, SWT.RADIO);
	saveToClipboard.setText(Policy.bind("Save_To_Clipboard_2")); //$NON-NLS-1$
	saveToClipboard.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event event) {
	validatePage();
	updateEnablements();
	}
	});

	// File System
	saveInFilesystem= new Button(composite, SWT.RADIO);
	saveInFilesystem.setText(Policy.bind("Save_In_File_System_3")); //$NON-NLS-1$
	saveInFilesystem.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event event) {
	validatePage();
	updateEnablements();
	}
	});

	Composite nameGroup = new Composite(composite,SWT.NONE);
	layout = new GridLayout();
	layout.numColumns = 2;
	layout.marginWidth = 0;
	nameGroup.setLayout(layout);
	GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.GRAB_HORIZONTAL);
	nameGroup.setLayoutData(data);

	filenameCombo= new Text(nameGroup, SWT.BORDER);
	GridData gd= new GridData(GridData.FILL_HORIZONTAL);
	filenameCombo.setLayoutData(gd);
	filenameCombo.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	validatePage();
	}
	});

	browseButton = new Button(nameGroup, SWT.NULL);
	browseButton.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_END));
	browseButton.setText(Policy.bind("Browse..._4")); //$NON-NLS-1$
	browseButton.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event event) {
	FileDialog d = new FileDialog(getShell());
	d.setText(Policy.bind("Save_Patch_As_5")); //$NON-NLS-1$
	d.setFileName(Policy.bind("patch.txt_6")); //$NON-NLS-1$
	String file = d.open();
	if(file!=null) {
	IPath path = new Path(file);
	setFilesystemFilename(path.toOSString());
	}
	}
	});

	// Workspace
	saveInWorkspace= new Button(composite, SWT.RADIO);
	saveInWorkspace.setText(Policy.bind("Save_In_Workspace_7")); //$NON-NLS-1$
	saveInWorkspace.addListener(SWT.Selection, new Listener() {
	public void handleEvent(Event event) {
	validatePage();
	updateEnablements();
	}
	});
	createTreeViewer(composite);
	}

	/**
	* Sets the file name in the file system text.
	*/
	protected void setFilesystemFilename(String filename) {
	filenameCombo.setText(filename);
	}

	/**
	* Create the tree viewer that shows the container available in the workspace. The user
	* can then enter a filename in the text box below the viewer.
	*/
	protected void createTreeViewer(Composite parent) {
	// Create tree viewer inside drill down.
	new Label(parent, SWT.LEFT).setText(Policy.bind("Select_a_folder_then_type_in_the_file_name__8")); //$NON-NLS-1$

	treeViewer = new TreeViewer(parent, SWT.BORDER);
	ContainerContentProvider cp = new ContainerContentProvider();
	cp.showClosedProjects(false);
	GridData data = new GridData(GridData.VERTICAL_ALIGN_FILL \| GridData.HORIZONTAL_ALIGN_FILL \|
	GridData.GRAB_HORIZONTAL \| GridData.GRAB_VERTICAL);

	data.widthHint = SIZING_SELECTION_PANE_WIDTH;
	data.heightHint = SIZING_SELECTION_PANE_HEIGHT;

	treeViewer.getTree().setLayoutData(data);
	treeViewer.setContentProvider(cp);
	treeViewer.setLabelProvider(new WorkbenchLabelProvider());
	treeViewer.addSelectionChangedListener(
	new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	IStructuredSelection selection = (IStructuredSelection)event.getSelection();
	containerSelectionChanged((IContainer) selection.getFirstElement()); // allow null
	validatePage();
	}
	});

	treeViewer.addDoubleClickListener(
	new IDoubleClickListener() {
	public void doubleClick(DoubleClickEvent event) {
	ISelection selection = event.getSelection();
	if (selection instanceof IStructuredSelection) {
	Object item = ((IStructuredSelection)selection).getFirstElement();
	if (treeViewer.getExpandedState(item))
	treeViewer.collapseToLevel(item, 1);
	else
	treeViewer.expandToLevel(item, 1);
	}
	}
	});

	// This has to be done after the viewer has been laid out
	treeViewer.setInput(ResourcesPlugin.getWorkspace());

	// name group
	Composite nameGroup = new Composite(parent,SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	layout.marginWidth = 0;
	nameGroup.setLayout(layout);
	data = new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.GRAB_HORIZONTAL);
	nameGroup.setLayoutData(data);

	Label label = new Label(nameGroup,SWT.NONE);
	label.setText(Policy.bind("Fi&le_name__9")); //$NON-NLS-1$

	// resource name entry field
	workspaceFilename = new Text(nameGroup,SWT.BORDER);
	data = new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.GRAB_HORIZONTAL);
	workspaceFilename.setLayoutData(data);
	workspaceFilename.addModifyListener(new ModifyListener() {
	public void modifyText(ModifyEvent e) {
	validatePage();
	}
	});
	}

	/**
	* Enable and disable controls based on the selected radio button.
	*/
	protected void updateEnablements() {
	int type = getSaveType();

	browseButton.setEnabled(type==FILESYSTEM);
	filenameCombo.setEnabled(type==FILESYSTEM);
	treeViewer.getTree().setEnabled(type==WORKSPACE);
	workspaceFilename.setEnabled(type==WORKSPACE);
	}

	/**
	* Answers the type of the patch file destination.
	*/
	public int getSaveType() {
	if(saveInFilesystem.getSelection()) {
	return FILESYSTEM;
	} else if(saveToClipboard.getSelection()) {
	return CLIPBOARD;
	} else {
	return WORKSPACE;
	}
	}

	/**
	* Remember the container selected in the tree viewer.
	*/
	public void containerSelectionChanged(IContainer container) {
	selectedContainer = container;
	}
	}
	// end of PatchFileSelectionPage

	/**
	* Page to select the options for creating the patch.
	*/
	public class PatchFileCreationOptionsPage extends WizardPage {

	private Button recurseOption;
	private Button contextDiffOption;
	private Button unifiedDiffOption;
	private Button regularDiffOption;
	private Button includeNewFilesOptions;

	/**
	* Constructor for PatchFileCreationOptionsPage.
	*/
	protected PatchFileCreationOptionsPage(String pageName) {
	super(pageName);
	}

	/**
	* Constructor for PatchFileCreationOptionsPage.
	*/
	protected PatchFileCreationOptionsPage(String pageName, String title, ImageDescriptor titleImage) {
	super(pageName, title, titleImage);
	}

	/*
	* @see IDialogPage#createControl(Composite)
	*/
	public void createControl(Composite parent) {
	Composite composite= new Composite(parent, SWT.NULL);
	GridLayout layout= new GridLayout();
	composite.setLayout(layout);
	composite.setLayoutData(new GridData());
	setControl(composite);

	recurseOption = new Button(composite, SWT.CHECK);
	recurseOption.setText(Policy.bind("Do_not_recurse_into_sub-folders_10")); //$NON-NLS-1$
	recurseOption.setSelection(true);

	includeNewFilesOptions = new Button(composite, SWT.CHECK);
	includeNewFilesOptions.setText(Policy.bind("Do_not_include_new_files_in_patch_11")); //$NON-NLS-1$
	includeNewFilesOptions.setSelection(true);

	Group diffTypeGroup = new Group(composite, SWT.NONE);
	layout = new GridLayout();
	layout.marginHeight = 0;
	diffTypeGroup.setLayout(layout);
	GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL \| GridData.GRAB_HORIZONTAL);
	diffTypeGroup.setLayoutData(data);
	diffTypeGroup.setText(Policy.bind("Diff_output_format_12")); //$NON-NLS-1$

	unifiedDiffOption = new Button(diffTypeGroup, SWT.RADIO);
	unifiedDiffOption.setText(Policy.bind("Unified_(format_required_by_Compare_With_Patch_feature)_13")); //$NON-NLS-1$
	unifiedDiffOption.setSelection(true);
	contextDiffOption = new Button(diffTypeGroup, SWT.RADIO);
	contextDiffOption.setText(Policy.bind("Context_14")); //$NON-NLS-1$
	regularDiffOption = new Button(diffTypeGroup, SWT.RADIO);
	regularDiffOption.setText(Policy.bind("Standard_15")); //$NON-NLS-1$
	}

	/**
	* Answers if the difference operation should be run recursively.
	*/
	public boolean isRecursive() {
	return !recurseOption.getSelection();
	}

	/**
	* Return the list of Diff command options configured on this page.
	*/
	public LocalOption[] getOptions() {
	List options = new ArrayList(5);
	if(includeNewFilesOptions.getSelection()) {
	options.add(Diff.INCLUDE_NEWFILES);
	}
	if(!recurseOption.getSelection()) {
	options.add(Diff.DO_NOT_RECURSE);
	}
	if(unifiedDiffOption.getSelection()) {
	options.add(Diff.UNIFIED_FORMAT);
	} else if(contextDiffOption.getSelection()) {
	options.add(Diff.CONTEXT_FORMAT);
	}
	return (LocalOption[]) options.toArray(new LocalOption[options.size()]);
	}
	}
	// end of PatchFileCreationOptionsPage

	public GenerateDiffFileWizard(IStructuredSelection selection, IResource resource) {
	super();
	this.selection = selection;
	this.resource = resource;
	setWindowTitle(Policy.bind("GenerateCVSDiff.title")); //$NON-NLS-1$
	initializeDefaultPageImageDescriptor();
	}

	public void addPages() {
	String pageTitle =Policy.bind("GenerateCVSDiff.pageTitle"); //$NON-NLS-1$
	String pageDescription = Policy.bind("GenerateCVSDiff.pageDescription"); //$NON-NLS-1$
	mainPage = new PatchFileSelectionPage(pageTitle, selection);
	mainPage.setDescription(pageDescription);
	mainPage.setTitle(pageTitle);
	addPage(mainPage);

	pageTitle = Policy.bind("Advanced_options_19"); //$NON-NLS-1$
	pageDescription = Policy.bind("Configure_the_options_used_for_the_CVS_diff_command_20"); //$NON-NLS-1$
	optionsPage = new PatchFileCreationOptionsPage(pageTitle);
	optionsPage.setDescription(pageDescription);
	optionsPage.setTitle(pageTitle);
	addPage(optionsPage);
	}

	/**
	* Initializes this creation wizard using the passed workbench and
	* object selection.
	*
	* @param workbench the current workbench
	* @param selection the current object selection
	*/
	public void init(IWorkbench workbench, IStructuredSelection selection) {
	}
	/**
	* Declares the wizard banner iamge descriptor
	*/
	protected void initializeDefaultPageImageDescriptor() {
	String iconPath;
	if (Display.getCurrent().getIconDepth() > 4) {
	iconPath = "icons/full/"; //$NON-NLS-1$
	} else {
	iconPath = "icons/basic/"; //$NON-NLS-1$
	}
	try {
	URL installURL = CVSUIPlugin.getPlugin().getDescriptor().getInstallURL();
	URL url = new URL(installURL, iconPath + "wizards/newconnect_wiz.gif"); //$NON-NLS-1$
	ImageDescriptor desc = ImageDescriptor.createFromURL(url);
	setDefaultPageImageDescriptor(desc);
	} catch (MalformedURLException e) {
	// Should not happen. Ignore.
	}
	}

	/* (Non-javadoc)
	* Method declared on IWizard.
	*/
	public boolean needsProgressMonitor() {
	return true;
	}
	/**
	* Completes processing of the wizard. If this method returns <code>
	* true</code>, the wizard will close; otherwise, it will stay active.
	*/
	public boolean performFinish() {
	String fs = mainPage.getFilesystemFile();
	IFile ws = mainPage.getWorkspaceFile();
	int type = mainPage.getSaveType();

	try {
	if(type != mainPage.CLIPBOARD) {
	File file = new File(fs!=null ? fs : ws.getLocation().toOSString());
	if (file.exists()) {
	// prompt then delete
	String title = Policy.bind("GenerateCVSDiff.overwriteTitle"); //$NON-NLS-1$
	String msg = Policy.bind("GenerateCVSDiff.overwriteMsg"); //$NON-NLS-1$
	final MessageDialog dialog = new MessageDialog(getShell(), title, null, msg, MessageDialog.QUESTION, new String[] { IDialogConstants.YES_LABEL, IDialogConstants.CANCEL_LABEL }, 0);

	dialog.open();

	if (dialog.getReturnCode() != 0) {
	// cancel
	return false;
	}
	}
	getContainer().run(false, true, new GenerateDiffFileOperation(resource, file, false, optionsPage.getOptions(), getShell()));
	if(type==mainPage.WORKSPACE) {
	ws.getParent().refreshLocal(IResource.DEPTH_ONE, null);
	}
	} else {
	getContainer().run(false, true, new GenerateDiffFileOperation(resource, null, true, optionsPage.getOptions(), getShell()));
	}
	return true;
	} catch (InterruptedException e1) {
	return true;
	} catch(CoreException e) {
	ErrorDialog.openError(getShell(), Policy.bind("GenerateCVSDiff.error"), null, e.getStatus()); //$NON-NLS-1$
	return false;
	} catch (InvocationTargetException e2) {
	if (e2.getTargetException() instanceof CoreException) {
	CoreException e = (CoreException) e2.getTargetException();
	ErrorDialog.openError(getShell(), Policy.bind("GenerateCVSDiff.error"), null, e.getStatus()); //$NON-NLS-1$
	return false;
	} else {
	Throwable target = e2.getTargetException();
	if (target instanceof RuntimeException) {
	throw (RuntimeException) target;
	}
	if (target instanceof Error) {
	throw (Error) target;
	}
	}
	return true;
	}
	}
	}