bundles/org.eclipse.wst.xsl.debug.ui/src/org/eclipse/wst/xsl/internal/debug/ui/ResourceSelectionBlock.java - sourceediting/webtools.sourceediting.xsl - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007 Chase Technology Ltd - http://www.chasetechnology.co.uk
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     Doug Satchwell (Chase Technology Ltd) - initial API and implementation
  *******************************************************************************/
 package org.eclipse.wst.xsl.internal.debug.ui;

 import java.io.File;

 import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.IFolder;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.IWorkspaceRoot;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.core.variables.IStringVariableManager;
 import org.eclipse.core.variables.VariablesPlugin;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.ui.AbstractLaunchConfigurationTab;
 import org.eclipse.debug.ui.StringVariableSelectionDialog;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerFilter;
 import org.eclipse.jface.window.Window;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.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.DirectoryDialog;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
 import org.eclipse.ui.dialogs.ISelectionStatusValidator;
 import org.eclipse.ui.model.WorkbenchContentProvider;
 import org.eclipse.ui.model.WorkbenchLabelProvider;
 import org.eclipse.ui.views.navigator.ResourceComparator;

 /**
  * A block that shows a text box with buttons for browsing workspace or the filesystem
  * in order to populate the text box with a file path.
  *
  * @author Doug Satchwell
  */
 public abstract class ResourceSelectionBlock extends AbstractLaunchConfigurationTab
 {
 	protected static final int ERROR_DIRECTORY_NOT_SPECIFIED = 1;
 	protected static final int ERROR_DIRECTORY_DOES_NOT_EXIST = 2;
 	protected static final int GROUP_NAME = 3;
 	protected static final int USE_DEFAULT_RADIO = 4;
 	protected static final int USE_OTHER_RADIO = 5;
 	protected static final int DIRECTORY_DIALOG_MESSAGE = 6;
 	protected static final int WORKSPACE_DIALOG_MESSAGE = 7;
 	protected static final int VARIABLES_BUTTON = 8;
 	protected static final int FILE_SYSTEM_BUTTON = 9;
 	protected static final int WORKSPACE_BUTTON = 10;
 	protected static final int WORKSPACE_DIALOG_TITLE = 11;

 	protected Button fWorkspaceButton;
 	protected Button fFileSystemButton;
 	protected Button fVariablesButton;
 	protected Button useDefaultCheckButton;
 	protected Text resourceText;
 	protected WidgetListener widgetListener = new WidgetListener();
 	private ILaunchConfiguration fLaunchConfiguration;
 	protected final boolean showDefault;
 	private final int resourceType;
 	private final boolean mustExist;
 	protected boolean required;
 	protected String defaultOutputFile;
 	protected String outputFile;
 	protected String fileLabel = Messages.getString("ResourceSelectionBlock.0"); //$NON-NLS-1$

 	private final ISelectionStatusValidator validator = new ISelectionStatusValidator()
 	{
 		public IStatus validate(Object[] selection)
 		{
 			if (selection.length == 0)
 			{
 				return new Status(IStatus.ERROR, XSLDebugUIPlugin.PLUGIN_ID, 0, "", null);  //$NON-NLS-1$
 			}
 			for (int i = 0; i < selection.length; i++)
 			{
 				if (resourceType == IResource.FOLDER && !(selection[i] instanceof IFolder))
 					return new Status(IStatus.ERROR, XSLDebugUIPlugin.PLUGIN_ID, 0, "", null);  //$NON-NLS-1$
 				else if (resourceType == IResource.FILE && !(selection[i] instanceof IFile))
 					return new Status(IStatus.ERROR, XSLDebugUIPlugin.PLUGIN_ID, 0, "", null);  //$NON-NLS-1$
 			}
 			return new Status(IStatus.OK, XSLDebugUIPlugin.PLUGIN_ID, 0, "", null);  //$NON-NLS-1$
 		}
 	};

 	class WidgetListener extends SelectionAdapter implements ModifyListener
 	{
 		public void modifyText(ModifyEvent e)
 		{
 			textModified();
 			updateLaunchConfigurationDialog();
 		}

 		@Override
 		public void widgetSelected(SelectionEvent e)
 		{
 			Object source = e.getSource();
 			if (source == fWorkspaceButton)
 			{
 				handleWorkspaceResourceBrowseButtonSelected();
 			}
 			else if (source == fFileSystemButton)
 			{
 				handleExternalResourceBrowseButtonSelected();
 			}
 			else if (source == fVariablesButton)
 			{
 				handleResourceVariablesButtonSelected();
 			}
 			else if (source == useDefaultCheckButton)
 			{
 				updateResourceText(useDefaultCheckButton.getSelection());
 			}
 		}
 	}

 	/**
 	 * Same as <code>new ResourceSelectionBlock(true)</code>
 	 */
 	public ResourceSelectionBlock()
 	{
 		this(true);
 	}

 	/**
 	 * Same as <code>new ResourceSelectionBlock(IResource.FOLDER,showDefault)</code>
 	 *
 	 * @param showDefault true if this should have a 'Show Default' button
 	 */
 	public ResourceSelectionBlock(boolean showDefault)
 	{
 		this(IResource.FOLDER, showDefault);
 	}

 	/**
 	 * Same as <code>new ResourceSelectionBlock(resourceType,showDefault,true)</code>
 	 *
 	 * @param resourceType the type of resource to select - IResource.FOLDER or IResource.FILE
 	 * @param showDefault true if this should have a 'Show Default' button
 	 */
 	public ResourceSelectionBlock(int resourceType, boolean showDefault)
 	{
 		this(resourceType, showDefault, true);
 	}

 	/**
 	 * Same as <code>new ResourceSelectionBlock(resourceType,showDefault,required,true)</code>
 	 *
 	 * @param resourceType the type of resource to select - IResource.FOLDER or IResource.FILE
 	 * @param showDefault true if this should have a 'Show Default' button
 	 * @param required true if a blank text box is invalid
 	 */
 	public ResourceSelectionBlock(int resourceType, boolean showDefault, boolean required)
 	{
 		this(resourceType, showDefault, required, true);
 	}

 	/**
 	 * Create a new instance of this.
 	 *
 	 * @param resourceType the type of resource to select - IResource.FOLDER or IResource.FILE
 	 * @param showDefault true if this should have a 'Show Default' button
 	 * @param required true if a blank text box is invalid
 	 * @param mustExist true of the selected resource must already exist
 	 */
 	public ResourceSelectionBlock(int resourceType, boolean showDefault, boolean required, boolean mustExist)
 	{
 		super();
 		this.showDefault = showDefault;
 		this.resourceType = resourceType;
 		this.required = required;
 		this.mustExist = mustExist;
 	}

 	public void createControl(Composite parent)
 	{
 		Composite group = createContainer(parent);
 		setControl(group);
 		createContents(group);
 	}

 	protected Composite createContainer(Composite parent)
 	{
 		Group group = new Group(parent, SWT.NONE);
 		group.setText(getMessage(GROUP_NAME));
 		// TODO PlatformUI.getWorkbench().getHelpSystem().setHelp...
 		GridLayout groupLayout = new GridLayout();
 		groupLayout.numColumns = 2;
 		groupLayout.makeColumnsEqualWidth = false;
 		group.setLayout(groupLayout);
 		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
 		group.setLayoutData(gd);
 		group.setFont(parent.getFont());
 		return group;
 	}

 	protected void createContents(Composite parent)
 	{
 		createCheckboxAndText(parent);
 		createButtons(parent);
 	}

 	protected void createCheckboxAndText(Composite parent)
 	{
 		if (showDefault)
 		{
 			useDefaultCheckButton = createCheckButton(parent, getMessage(USE_DEFAULT_RADIO));
 			GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 			gd.horizontalSpan = 2;
 			useDefaultCheckButton.setLayoutData(gd);
 			useDefaultCheckButton.addSelectionListener(widgetListener);
 		}

 		Composite specificFileComp = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout(2, false);
 		layout.marginWidth = 0;
 		if (showDefault)
 			layout.marginLeft = 20;
 		else
 			layout.marginLeft = 0;
 		layout.marginHeight = 0;
 		specificFileComp.setLayout(layout);
 		GridData gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = 2;
 		specificFileComp.setLayoutData(gd);

 		if (showDefault)
 		{
 			Label label = new Label(specificFileComp, SWT.NONE);
 			label.setText(fileLabel);
 		}

 		resourceText = new Text(specificFileComp, SWT.SINGLE | SWT.BORDER);
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		gd.horizontalSpan = showDefault ? 1 : 2;
 		resourceText.setLayoutData(gd);
 		resourceText.setFont(parent.getFont());
 		resourceText.addModifyListener(widgetListener);
 	}

 	protected void createButtons(Composite parent)
 	{
 		// filler
 		new Label(parent, SWT.NONE);

 		Composite buttonComp = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout(3, false);
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		buttonComp.setLayout(layout);
 		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		gd.horizontalSpan = 1;
 		buttonComp.setLayoutData(gd);
 		buttonComp.setFont(parent.getFont());

 		fWorkspaceButton = createPushButton(buttonComp, getMessage(WORKSPACE_BUTTON), null);
 		fWorkspaceButton.addSelectionListener(widgetListener);

 		fFileSystemButton = createPushButton(buttonComp, getMessage(FILE_SYSTEM_BUTTON), null);
 		fFileSystemButton.addSelectionListener(widgetListener);

 		fVariablesButton = createPushButton(buttonComp, getMessage(VARIABLES_BUTTON), null);
 		fVariablesButton.addSelectionListener(widgetListener);
 	}

 	protected void updateResourceText(boolean useDefault)
 	{
 		if (useDefault)
 		{
 			resourceText.setText(defaultOutputFile == null ? "" : defaultOutputFile); //$NON-NLS-1$
 		}
 		else
 		{
 			resourceText.setText(outputFile == null ? "" : outputFile); //$NON-NLS-1$
 		}
 		resourceText.setEnabled(!useDefault);
 		fFileSystemButton.setEnabled(!useDefault);
 		fVariablesButton.setEnabled(!useDefault);
 		fWorkspaceButton.setEnabled(!useDefault);
 	}

 	@Override
 	public void dispose()
 	{
 	}

 	protected void handleExternalResourceBrowseButtonSelected()
 	{
 		String currentWorkingDir = getText();
 		String selected = null;
 		if (resourceType == IResource.FOLDER)
 		{
 			DirectoryDialog dialog = new DirectoryDialog(getShell());
 			dialog.setMessage(getMessage(DIRECTORY_DIALOG_MESSAGE));
 			if (!currentWorkingDir.trim().equals("")) //$NON-NLS-1$
 			{
 				File path = new File(currentWorkingDir);
 				if (path.exists())
 				{
 					dialog.setFilterPath(currentWorkingDir);
 				}
 			}
 			selected = dialog.open();
 		}
 		else
 		{
 			FileDialog dialog = new FileDialog(getShell());
 			if (!currentWorkingDir.trim().equals("")) //$NON-NLS-1$
 			{
 				File path = new File(currentWorkingDir);
 				if (path.exists())
 				{
 					dialog.setFilterPath(currentWorkingDir);
 				}
 			}
 			String[] fileExtensions = getFileExtensions();
 			if (fileExtensions != null)
 			{
 				String[] filterExtensions = new String[fileExtensions.length];
 				for (int i = 0; i < fileExtensions.length; i++)
 				{
 					String ext = fileExtensions[i];
 					filterExtensions[i] = "*." + ext; //$NON-NLS-1$
 				}
 				dialog.setFilterExtensions(filterExtensions);
 			}
 			selected = dialog.open();
 		}
 		if (selected != null)
 		{
 			resourceText.setText(selected);
 		}
 	}

 	protected String[] getFileExtensions()
 	{
 		return null;
 	}

 	protected void handleWorkspaceResourceBrowseButtonSelected()
 	{
 		IPath path = openWorkspaceResourceDialog();
 		if (path != null)
 			setText("${workspace_loc:" + path.toString() + "}");   //$NON-NLS-1$ //$NON-NLS-2$
 	}

 	protected IPath openWorkspaceResourceDialog()
 	{
 		IResource currentResource = getResource();
 		ElementTreeSelectionDialog dialog = new ElementTreeSelectionDialog(getShell(), new WorkbenchLabelProvider(), new WorkbenchContentProvider());
 		dialog.setTitle(getMessage(WORKSPACE_DIALOG_TITLE));
 		dialog.setMessage(getMessage(WORKSPACE_DIALOG_MESSAGE));
 		dialog.setValidator(validator);
 		dialog.addFilter(new ViewerFilter()
 		{
 			@Override
 			public boolean select(Viewer viewer, Object parentElement, Object element)
 			{
 				if (element instanceof IContainer)
 					return true;
 				if (resourceType != IResource.FILE)
 					return false;
 				IFile file = (IFile) element;
 				String[] extensions = getFileExtensions();
 				if (extensions == null)
 					return true;
 				String fileExt = file.getFileExtension();
 				if (fileExt != null)
 				{
 					for (String ext : extensions)
 					{
 						if (fileExt.equalsIgnoreCase(ext))
 							return true;
 					}
 				}
 				return false;
 			}
 		});
 		ViewerFilter filter = getResourceFilter();
 		if (filter != null)
 			dialog.addFilter(filter);
 		dialog.setInput(ResourcesPlugin.getWorkspace().getRoot());
 		dialog.setInitialSelection(currentResource);
 		dialog.setComparator(new ResourceComparator(ResourceComparator.NAME));
 		dialog.setAllowMultiple(false);

 		if (dialog.open() == Window.OK)
 		{
 			Object[] elements = dialog.getResult();
 			if (elements.length > 0)
 				return ((IResource) elements[0]).getFullPath();
 		}
 		return null;
 	}

 	protected ViewerFilter getResourceFilter()
 	{
 		return null;
 	}

 	/**
 	 * Returns the selected workspace container,or <code>null</code>
 	 */
 	protected IResource getResource()
 	{
 		String path = getText();
 		if (path.length() > 0)
 		{
 			IResource res = null;
 			IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
 			if (path.startsWith("${workspace_loc:"))  //$NON-NLS-1$
 			{
 				IStringVariableManager manager = VariablesPlugin.getDefault().getStringVariableManager();
 				try
 				{
 					path = manager.performStringSubstitution(path, false);
 					if (resourceType == IResource.FOLDER)
 					{
 						IContainer[] containers = root.findContainersForLocation(new Path(path));
 						if (containers.length > 0)
 						{
 							res = containers[0];
 						}
 					}
 					else if (resourceType == IResource.FILE)
 					{
 						IFile[] files = root.findFilesForLocation(new Path(path));
 						if (files.length > 0)
 						{
 							res = files[0];
 						}
 					}
 				}
 				catch (CoreException e)
 				{
 				}
 			}
 			else
 			{
 				res = root.findMember(path);
 			}
 			return res;
 		}
 		return null;
 	}

 	protected void handleResourceVariablesButtonSelected()
 	{
 		StringVariableSelectionDialog dialog = new StringVariableSelectionDialog(getShell());
 		dialog.open();
 		String variableText = dialog.getVariableExpression();
 		if (variableText != null)
 		{
 			resourceText.insert(variableText);
 		}
 	}

 	protected abstract void setDefaultResource();

 	@Override
 	public boolean isValid(ILaunchConfiguration config)
 	{
 		setErrorMessage(null);
 		setMessage(null);
 		// if variables are present, we cannot resolve the directory
 		String workingDirPath = getText();
 		if (workingDirPath.indexOf("${") >= 0) //$NON-NLS-1$
 		{
 			IStringVariableManager manager = VariablesPlugin.getDefault().getStringVariableManager();
 			try
 			{
 				manager.validateStringVariables(workingDirPath);
 				if (mustExist)
 				{
 					String path = manager.performStringSubstitution(workingDirPath);
 					validateResource(path);
 				}
 			}
 			catch (CoreException e)
 			{
 				setErrorMessage(e.getMessage());
 				return false;
 			}
 		}
 		else if (mustExist && workingDirPath.length() > 0)
 		{
 			return validateResource(workingDirPath);
 		}
 		else if (required && workingDirPath.length() == 0)
 		{
 			setErrorMessage(getMessage(ERROR_DIRECTORY_NOT_SPECIFIED));
 		}
 		return true;
 	}

 	protected boolean validateResource(String workingDirPath)
 	{
 		if (resourceType == IResource.FOLDER)
 		{
 			IContainer container = (IContainer) getResource();
 			if (container == null)
 			{
 				File dir = new File(workingDirPath);
 				if (dir.isDirectory())
 				{
 					return true;
 				}
 			}
 			else
 				return true;
 		}
 		else if (resourceType == IResource.FILE)
 		{
 			File file = new File(workingDirPath);
 			if (file.isFile())
 			{
 				return true;
 			}
 		}
 		setErrorMessage(getMessage(ERROR_DIRECTORY_DOES_NOT_EXIST));
 		return false;
 	}

 	protected abstract String getMessage(int type);

 	protected void textModified()
 	{
 	}

 	protected String getText()
 	{
 		return resourceText.getText().trim();
 	}

 	protected void setText(String text)
 	{
 		resourceText.setText(text);
 	}

 	protected void setLaunchConfiguration(ILaunchConfiguration config)
 	{
 		fLaunchConfiguration = config;
 	}

 	protected ILaunchConfiguration getLaunchConfiguration()
 	{
 		return fLaunchConfiguration;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2007 Chase Technology Ltd - http://www.chasetechnology.co.uk
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* Doug Satchwell (Chase Technology Ltd) - initial API and implementation
	*******************************************************************************/
	package org.eclipse.wst.xsl.internal.debug.ui;

	import java.io.File;

	import org.eclipse.core.resources.IContainer;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.IFolder;
	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.IWorkspaceRoot;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.core.variables.IStringVariableManager;
	import org.eclipse.core.variables.VariablesPlugin;
	import org.eclipse.debug.core.ILaunchConfiguration;
	import org.eclipse.debug.ui.AbstractLaunchConfigurationTab;
	import org.eclipse.debug.ui.StringVariableSelectionDialog;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.viewers.ViewerFilter;
	import org.eclipse.jface.window.Window;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.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.DirectoryDialog;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
	import org.eclipse.ui.dialogs.ISelectionStatusValidator;
	import org.eclipse.ui.model.WorkbenchContentProvider;
	import org.eclipse.ui.model.WorkbenchLabelProvider;
	import org.eclipse.ui.views.navigator.ResourceComparator;

	/**
	* A block that shows a text box with buttons for browsing workspace or the filesystem
	* in order to populate the text box with a file path.
	*
	* @author Doug Satchwell
	*/
	public abstract class ResourceSelectionBlock extends AbstractLaunchConfigurationTab
	{
	protected static final int ERROR_DIRECTORY_NOT_SPECIFIED = 1;
	protected static final int ERROR_DIRECTORY_DOES_NOT_EXIST = 2;
	protected static final int GROUP_NAME = 3;
	protected static final int USE_DEFAULT_RADIO = 4;
	protected static final int USE_OTHER_RADIO = 5;
	protected static final int DIRECTORY_DIALOG_MESSAGE = 6;
	protected static final int WORKSPACE_DIALOG_MESSAGE = 7;
	protected static final int VARIABLES_BUTTON = 8;
	protected static final int FILE_SYSTEM_BUTTON = 9;
	protected static final int WORKSPACE_BUTTON = 10;
	protected static final int WORKSPACE_DIALOG_TITLE = 11;

	protected Button fWorkspaceButton;
	protected Button fFileSystemButton;
	protected Button fVariablesButton;
	protected Button useDefaultCheckButton;
	protected Text resourceText;
	protected WidgetListener widgetListener = new WidgetListener();
	private ILaunchConfiguration fLaunchConfiguration;
	protected final boolean showDefault;
	private final int resourceType;
	private final boolean mustExist;
	protected boolean required;
	protected String defaultOutputFile;
	protected String outputFile;
	protected String fileLabel = Messages.getString("ResourceSelectionBlock.0"); //$NON-NLS-1$

	private final ISelectionStatusValidator validator = new ISelectionStatusValidator()
	{
	public IStatus validate(Object[] selection)
	{
	if (selection.length == 0)
	{
	return new Status(IStatus.ERROR, XSLDebugUIPlugin.PLUGIN_ID, 0, "", null); //$NON-NLS-1$
	}
	for (int i = 0; i < selection.length; i++)
	{
	if (resourceType == IResource.FOLDER && !(selection[i] instanceof IFolder))
	return new Status(IStatus.ERROR, XSLDebugUIPlugin.PLUGIN_ID, 0, "", null); //$NON-NLS-1$
	else if (resourceType == IResource.FILE && !(selection[i] instanceof IFile))
	return new Status(IStatus.ERROR, XSLDebugUIPlugin.PLUGIN_ID, 0, "", null); //$NON-NLS-1$
	}
	return new Status(IStatus.OK, XSLDebugUIPlugin.PLUGIN_ID, 0, "", null); //$NON-NLS-1$
	}
	};

	class WidgetListener extends SelectionAdapter implements ModifyListener
	{
	public void modifyText(ModifyEvent e)
	{
	textModified();
	updateLaunchConfigurationDialog();
	}

	@Override
	public void widgetSelected(SelectionEvent e)
	{
	Object source = e.getSource();
	if (source == fWorkspaceButton)
	{
	handleWorkspaceResourceBrowseButtonSelected();
	}
	else if (source == fFileSystemButton)
	{
	handleExternalResourceBrowseButtonSelected();
	}
	else if (source == fVariablesButton)
	{
	handleResourceVariablesButtonSelected();
	}
	else if (source == useDefaultCheckButton)
	{
	updateResourceText(useDefaultCheckButton.getSelection());
	}
	}
	}

	/**
	* Same as <code>new ResourceSelectionBlock(true)</code>
	*/
	public ResourceSelectionBlock()
	{
	this(true);
	}

	/**
	* Same as <code>new ResourceSelectionBlock(IResource.FOLDER,showDefault)</code>
	*
	* @param showDefault true if this should have a 'Show Default' button
	*/
	public ResourceSelectionBlock(boolean showDefault)
	{
	this(IResource.FOLDER, showDefault);
	}

	/**
	* Same as <code>new ResourceSelectionBlock(resourceType,showDefault,true)</code>
	*
	* @param resourceType the type of resource to select - IResource.FOLDER or IResource.FILE
	* @param showDefault true if this should have a 'Show Default' button
	*/
	public ResourceSelectionBlock(int resourceType, boolean showDefault)
	{
	this(resourceType, showDefault, true);
	}

	/**
	* Same as <code>new ResourceSelectionBlock(resourceType,showDefault,required,true)</code>
	*
	* @param resourceType the type of resource to select - IResource.FOLDER or IResource.FILE
	* @param showDefault true if this should have a 'Show Default' button
	* @param required true if a blank text box is invalid
	*/
	public ResourceSelectionBlock(int resourceType, boolean showDefault, boolean required)
	{
	this(resourceType, showDefault, required, true);
	}

	/**
	* Create a new instance of this.
	*
	* @param resourceType the type of resource to select - IResource.FOLDER or IResource.FILE
	* @param showDefault true if this should have a 'Show Default' button
	* @param required true if a blank text box is invalid
	* @param mustExist true of the selected resource must already exist
	*/
	public ResourceSelectionBlock(int resourceType, boolean showDefault, boolean required, boolean mustExist)
	{
	super();
	this.showDefault = showDefault;
	this.resourceType = resourceType;
	this.required = required;
	this.mustExist = mustExist;
	}

	public void createControl(Composite parent)
	{
	Composite group = createContainer(parent);
	setControl(group);
	createContents(group);
	}

	protected Composite createContainer(Composite parent)
	{
	Group group = new Group(parent, SWT.NONE);
	group.setText(getMessage(GROUP_NAME));
	// TODO PlatformUI.getWorkbench().getHelpSystem().setHelp...
	GridLayout groupLayout = new GridLayout();
	groupLayout.numColumns = 2;
	groupLayout.makeColumnsEqualWidth = false;
	group.setLayout(groupLayout);
	GridData gd = new GridData(GridData.FILL_HORIZONTAL);
	group.setLayoutData(gd);
	group.setFont(parent.getFont());
	return group;
	}

	protected void createContents(Composite parent)
	{
	createCheckboxAndText(parent);
	createButtons(parent);
	}

	protected void createCheckboxAndText(Composite parent)
	{
	if (showDefault)
	{
	useDefaultCheckButton = createCheckButton(parent, getMessage(USE_DEFAULT_RADIO));
	GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	gd.horizontalSpan = 2;
	useDefaultCheckButton.setLayoutData(gd);
	useDefaultCheckButton.addSelectionListener(widgetListener);
	}

	Composite specificFileComp = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout(2, false);
	layout.marginWidth = 0;
	if (showDefault)
	layout.marginLeft = 20;
	else
	layout.marginLeft = 0;
	layout.marginHeight = 0;
	specificFileComp.setLayout(layout);
	GridData gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = 2;
	specificFileComp.setLayoutData(gd);

	if (showDefault)
	{
	Label label = new Label(specificFileComp, SWT.NONE);
	label.setText(fileLabel);
	}

	resourceText = new Text(specificFileComp, SWT.SINGLE \| SWT.BORDER);
	gd = new GridData(GridData.FILL_HORIZONTAL);
	gd.horizontalSpan = showDefault ? 1 : 2;
	resourceText.setLayoutData(gd);
	resourceText.setFont(parent.getFont());
	resourceText.addModifyListener(widgetListener);
	}

	protected void createButtons(Composite parent)
	{
	// filler
	new Label(parent, SWT.NONE);

	Composite buttonComp = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout(3, false);
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	buttonComp.setLayout(layout);
	GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_END);
	gd.horizontalSpan = 1;
	buttonComp.setLayoutData(gd);
	buttonComp.setFont(parent.getFont());

	fWorkspaceButton = createPushButton(buttonComp, getMessage(WORKSPACE_BUTTON), null);
	fWorkspaceButton.addSelectionListener(widgetListener);

	fFileSystemButton = createPushButton(buttonComp, getMessage(FILE_SYSTEM_BUTTON), null);
	fFileSystemButton.addSelectionListener(widgetListener);

	fVariablesButton = createPushButton(buttonComp, getMessage(VARIABLES_BUTTON), null);
	fVariablesButton.addSelectionListener(widgetListener);
	}

	protected void updateResourceText(boolean useDefault)
	{
	if (useDefault)
	{
	resourceText.setText(defaultOutputFile == null ? "" : defaultOutputFile); //$NON-NLS-1$
	}
	else
	{
	resourceText.setText(outputFile == null ? "" : outputFile); //$NON-NLS-1$
	}
	resourceText.setEnabled(!useDefault);
	fFileSystemButton.setEnabled(!useDefault);
	fVariablesButton.setEnabled(!useDefault);
	fWorkspaceButton.setEnabled(!useDefault);
	}

	@Override
	public void dispose()
	{
	}

	protected void handleExternalResourceBrowseButtonSelected()
	{
	String currentWorkingDir = getText();
	String selected = null;
	if (resourceType == IResource.FOLDER)
	{
	DirectoryDialog dialog = new DirectoryDialog(getShell());
	dialog.setMessage(getMessage(DIRECTORY_DIALOG_MESSAGE));
	if (!currentWorkingDir.trim().equals("")) //$NON-NLS-1$
	{
	File path = new File(currentWorkingDir);
	if (path.exists())
	{
	dialog.setFilterPath(currentWorkingDir);
	}
	}
	selected = dialog.open();
	}
	else
	{
	FileDialog dialog = new FileDialog(getShell());
	if (!currentWorkingDir.trim().equals("")) //$NON-NLS-1$
	{
	File path = new File(currentWorkingDir);
	if (path.exists())
	{
	dialog.setFilterPath(currentWorkingDir);
	}
	}
	String[] fileExtensions = getFileExtensions();
	if (fileExtensions != null)
	{
	String[] filterExtensions = new String[fileExtensions.length];
	for (int i = 0; i < fileExtensions.length; i++)
	{
	String ext = fileExtensions[i];
	filterExtensions[i] = "*." + ext; //$NON-NLS-1$
	}
	dialog.setFilterExtensions(filterExtensions);
	}
	selected = dialog.open();
	}
	if (selected != null)
	{
	resourceText.setText(selected);
	}
	}

	protected String[] getFileExtensions()
	{
	return null;
	}

	protected void handleWorkspaceResourceBrowseButtonSelected()
	{
	IPath path = openWorkspaceResourceDialog();
	if (path != null)
	setText("${workspace_loc:" + path.toString() + "}"); //$NON-NLS-1$ //$NON-NLS-2$
	}

	protected IPath openWorkspaceResourceDialog()
	{
	IResource currentResource = getResource();
	ElementTreeSelectionDialog dialog = new ElementTreeSelectionDialog(getShell(), new WorkbenchLabelProvider(), new WorkbenchContentProvider());
	dialog.setTitle(getMessage(WORKSPACE_DIALOG_TITLE));
	dialog.setMessage(getMessage(WORKSPACE_DIALOG_MESSAGE));
	dialog.setValidator(validator);
	dialog.addFilter(new ViewerFilter()
	{
	@Override
	public boolean select(Viewer viewer, Object parentElement, Object element)
	{
	if (element instanceof IContainer)
	return true;
	if (resourceType != IResource.FILE)
	return false;
	IFile file = (IFile) element;
	String[] extensions = getFileExtensions();
	if (extensions == null)
	return true;
	String fileExt = file.getFileExtension();
	if (fileExt != null)
	{
	for (String ext : extensions)
	{
	if (fileExt.equalsIgnoreCase(ext))
	return true;
	}
	}
	return false;
	}
	});
	ViewerFilter filter = getResourceFilter();
	if (filter != null)
	dialog.addFilter(filter);
	dialog.setInput(ResourcesPlugin.getWorkspace().getRoot());
	dialog.setInitialSelection(currentResource);
	dialog.setComparator(new ResourceComparator(ResourceComparator.NAME));
	dialog.setAllowMultiple(false);

	if (dialog.open() == Window.OK)
	{
	Object[] elements = dialog.getResult();
	if (elements.length > 0)
	return ((IResource) elements[0]).getFullPath();
	}
	return null;
	}

	protected ViewerFilter getResourceFilter()
	{
	return null;
	}

	/**
	* Returns the selected workspace container,or <code>null</code>
	*/
	protected IResource getResource()
	{
	String path = getText();
	if (path.length() > 0)
	{
	IResource res = null;
	IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
	if (path.startsWith("${workspace_loc:")) //$NON-NLS-1$
	{
	IStringVariableManager manager = VariablesPlugin.getDefault().getStringVariableManager();
	try
	{
	path = manager.performStringSubstitution(path, false);
	if (resourceType == IResource.FOLDER)
	{
	IContainer[] containers = root.findContainersForLocation(new Path(path));
	if (containers.length > 0)
	{
	res = containers[0];
	}
	}
	else if (resourceType == IResource.FILE)
	{
	IFile[] files = root.findFilesForLocation(new Path(path));
	if (files.length > 0)
	{
	res = files[0];
	}
	}
	}
	catch (CoreException e)
	{
	}
	}
	else
	{
	res = root.findMember(path);
	}
	return res;
	}
	return null;
	}

	protected void handleResourceVariablesButtonSelected()
	{
	StringVariableSelectionDialog dialog = new StringVariableSelectionDialog(getShell());
	dialog.open();
	String variableText = dialog.getVariableExpression();
	if (variableText != null)
	{
	resourceText.insert(variableText);
	}
	}

	protected abstract void setDefaultResource();

	@Override
	public boolean isValid(ILaunchConfiguration config)
	{
	setErrorMessage(null);
	setMessage(null);
	// if variables are present, we cannot resolve the directory
	String workingDirPath = getText();
	if (workingDirPath.indexOf("${") >= 0) //$NON-NLS-1$
	{
	IStringVariableManager manager = VariablesPlugin.getDefault().getStringVariableManager();
	try
	{
	manager.validateStringVariables(workingDirPath);
	if (mustExist)
	{
	String path = manager.performStringSubstitution(workingDirPath);
	validateResource(path);
	}
	}
	catch (CoreException e)
	{
	setErrorMessage(e.getMessage());
	return false;
	}
	}
	else if (mustExist && workingDirPath.length() > 0)
	{
	return validateResource(workingDirPath);
	}
	else if (required && workingDirPath.length() == 0)
	{
	setErrorMessage(getMessage(ERROR_DIRECTORY_NOT_SPECIFIED));
	}
	return true;
	}

	protected boolean validateResource(String workingDirPath)
	{
	if (resourceType == IResource.FOLDER)
	{
	IContainer container = (IContainer) getResource();
	if (container == null)
	{
	File dir = new File(workingDirPath);
	if (dir.isDirectory())
	{
	return true;
	}
	}
	else
	return true;
	}
	else if (resourceType == IResource.FILE)
	{
	File file = new File(workingDirPath);
	if (file.isFile())
	{
	return true;
	}
	}
	setErrorMessage(getMessage(ERROR_DIRECTORY_DOES_NOT_EXIST));
	return false;
	}

	protected abstract String getMessage(int type);

	protected void textModified()
	{
	}

	protected String getText()
	{
	return resourceText.getText().trim();
	}

	protected void setText(String text)
	{
	resourceText.setText(text);
	}

	protected void setLaunchConfiguration(ILaunchConfiguration config)
	{
	fLaunchConfiguration = config;
	}

	protected ILaunchConfiguration getLaunchConfiguration()
	{
	return fLaunchConfiguration;
	}
	}