ant/org.eclipse.ant.ui/Ant Tools Support/org/eclipse/ant/internal/ui/preferences/AntPropertiesBlock.java - platform/eclipse.platform - 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.ant.internal.ui.preferences;


 import java.text.MessageFormat;
 import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;

 import org.eclipse.ant.core.AntCorePlugin;
 import org.eclipse.ant.core.AntCorePreferences;
 import org.eclipse.ant.core.Property;
 import org.eclipse.ant.internal.ui.model.AntUIPlugin;
 import org.eclipse.ant.internal.ui.model.IAntUIConstants;
 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.runtime.Path;
 import org.eclipse.debug.core.variables.ILaunchVariableManager;
 import org.eclipse.debug.core.variables.LaunchVariableUtil;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.dialogs.MessageDialog;
 import org.eclipse.jface.viewers.DoubleClickEvent;
 import org.eclipse.jface.viewers.IDoubleClickListener;
 import org.eclipse.jface.viewers.ILabelProvider;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.ITreeContentProvider;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.ViewerFilter;
 import org.eclipse.jface.window.Window;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 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.FileDialog;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
 import org.eclipse.ui.model.WorkbenchContentProvider;
 import org.eclipse.ui.model.WorkbenchLabelProvider;
 import org.eclipse.ui.views.navigator.ResourceSorter;

 public class AntPropertiesBlock {

 	private IAntBlockContainer container;

 	private Button editButton;
 	private Button removeButton;
 	private Button addButton;

 	private Button addFileButton;
 	private Button addExternalFileButton;
 	private Button removeFileButton;

 	private TableViewer propertyTableViewer;
 	private TableViewer fileTableViewer;

 	private final AntObjectLabelProvider labelProvider = new AntObjectLabelProvider();

 	private IDialogSettings dialogSettings;

 	private boolean showExternal= false;

 	private boolean tablesEnabled= true;

 	/**
 	 * Button listener that delegates for widget selection events.
 	 */
 	private SelectionAdapter buttonListener= new SelectionAdapter() {
 		public void widgetSelected(SelectionEvent event) {
 			if (event.widget == addButton) {
 				addProperty();
 			} else if (event.widget == editButton) {
 				edit();
 			} else if (event.widget == removeButton) {
 				remove(propertyTableViewer);
 			} else if (event.widget == addFileButton) {
 				addPropertyFile();
 			} else if (event.widget == addExternalFileButton) {
 				addExternalPropertyFile();
 			} else if (event.widget == removeFileButton) {
 				remove(fileTableViewer);
 			}
 		}
 	};

 	/**
 	 * Selection changed listener that delegates selection events.
 	 */
 	private ISelectionChangedListener tableListener= new ISelectionChangedListener() {
 		public void selectionChanged(SelectionChangedEvent event) {
 			if (tablesEnabled) {
 				if (event.getSource() == propertyTableViewer) {
 					propertyTableSelectionChanged((IStructuredSelection) event.getSelection());
 				} else if (event.getSource() == fileTableViewer) {
 					fileTableSelectionChanged((IStructuredSelection) event.getSelection());
 				}
 			}
 		}
 	};

 	public AntPropertiesBlock(IAntBlockContainer container) {
 		this.container= container;
 	}

 	private void addPropertyFile() {

 		ViewerFilter filter= new PropertyFileFilter(Arrays.asList(getPropertyFiles()));
 		ILabelProvider lp= new WorkbenchLabelProvider();
 		ITreeContentProvider cp= new WorkbenchContentProvider();

 		ElementTreeSelectionDialog dialog= new ElementTreeSelectionDialog(propertyTableViewer.getControl().getShell(), lp, cp);
 		dialog.setTitle(AntPreferencesMessages.getString("AntPropertiesBlock.12"));  //$NON-NLS-1$
 		dialog.setMessage(AntPreferencesMessages.getString("AntPropertiesBlock.13")); //$NON-NLS-1$
 		dialog.addFilter(filter);
 		dialog.setInput(ResourcesPlugin.getWorkspace().getRoot());
 		dialog.setSorter(new ResourceSorter(ResourceSorter.NAME));

 		if (dialog.open() == Window.OK) {
 			Object[] elements= dialog.getResult();
 			for (int i = 0; i < elements.length; i++) {
 				IFile file = (IFile)elements[i];
 				String varExpression= LaunchVariableUtil.newVariableExpression(ILaunchVariableManager.VAR_WORKSPACE_LOC, file.getFullPath().toString());
 				((AntContentProvider)fileTableViewer.getContentProvider()).add(varExpression);
 			}
 			container.update();
 		}

 	}

 	public AntPropertiesBlock(IAntBlockContainer container, boolean showExternal) {
 		this.container= container;
 		this.showExternal= showExternal;
 	}

 	public void createControl(Composite top, String propertyLabel, String propertyFileLabel) {
 		Font font= top.getFont();
 		dialogSettings= AntUIPlugin.getDefault().getDialogSettings();

 		Label label = new Label(top, SWT.NONE);
 		GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		gd.horizontalSpan =2;
 		label.setLayoutData(gd);
 		label.setFont(font);
 		label.setText(propertyLabel);

 		propertyTableViewer= createTableViewer(top);
 		propertyTableViewer.addDoubleClickListener(new IDoubleClickListener() {
 			public void doubleClick(DoubleClickEvent event) {
 				if (!event.getSelection().isEmpty() && editButton.isEnabled()) {
 					edit();
 				}
 			}
 		});

 		createButtonGroup(top);

 		label = new Label(top, SWT.NONE);
 		gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
 		gd.horizontalSpan =2;
 		label.setLayoutData(gd);
 		label.setFont(font);
 		label.setText(propertyFileLabel);

 		fileTableViewer= createTableViewer(top);
 		createButtonGroup(top);
 	}

 	/**
 	 * Creates the group which will contain the buttons.
 	 */
 	private void createButtonGroup(Composite top) {
 		Composite buttonGroup = new Composite(top, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.marginHeight = 0;
 		layout.marginWidth = 0;
 		buttonGroup.setLayout(layout);
 		buttonGroup.setLayoutData(new GridData(GridData.FILL_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL));
 		buttonGroup.setFont(top.getFont());

 		addButtonsToButtonGroup(buttonGroup);
 	}

 	/**
 	 * Creates and returns a configured table viewer in the given parent
 	 */
 	private TableViewer createTableViewer(Composite parent) {
 		Table table = new Table(parent, SWT.MULTI | SWT.FULL_SELECTION | SWT.BORDER);
 		GridData data= new GridData(GridData.FILL_BOTH);
 		data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
 		table.setLayoutData(data);
 		table.setFont(parent.getFont());

 		TableViewer tableViewer= new TableViewer(table);
 		tableViewer.setContentProvider(new AntContentProvider());
 		tableViewer.setLabelProvider(labelProvider);
 		tableViewer.addSelectionChangedListener(tableListener);
 		return tableViewer;
 	}

 	/* (non-Javadoc)
 	 * Method declared on AntPage.
 	 */
 	protected void addButtonsToButtonGroup(Composite parent) {
 		if (editButton == null) {
 			addButton= createPushButton(parent, AntPreferencesMessages.getString("AntPropertiesBlock.1")); //$NON-NLS-1$
 			editButton= createPushButton(parent, AntPreferencesMessages.getString("AntPropertiesBlock.2"));  //$NON-NLS-1$
 			removeButton= createPushButton(parent, AntPreferencesMessages.getString("AntPropertiesBlock.3"));  //$NON-NLS-1$
 		} else {
 			if (showExternal) {
 				addFileButton= createPushButton(parent, AntPreferencesMessages.getString("AntPropertiesBlock.4")); //$NON-NLS-1$
 			}
 			String label;
 			if (showExternal) {
 				label= AntPreferencesMessages.getString("AntPropertiesBlock.14"); //$NON-NLS-1$
 			} else {
 				label= AntPreferencesMessages.getString("AntPropertiesBlock.4"); //$NON-NLS-1$
 			}
 			addExternalFileButton= createPushButton(parent, label);
 			removeFileButton= createPushButton(parent, AntPreferencesMessages.getString("AntPropertiesBlock.removeFileButton")); //$NON-NLS-1$
 		}
 	}

 	/**
 	 * Creates and returns a configured button in the given composite with the given
 	 * label. Widget selection callbacks for the returned button will be processed
 	 * by the <code>buttonListener</code>
 	 */
 	private Button createPushButton(Composite parent, String label) {
 		Button button= container.createPushButton(parent, label);
 		button.addSelectionListener(buttonListener);
 		GridData gridData = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.FILL_HORIZONTAL);
 		button.setLayoutData(gridData);
 		return button;
 	}

 	/**
 	 * Allows the user to enter external property files
 	 */
 	private void addExternalPropertyFile() {
 		String lastUsedPath;
 		lastUsedPath= dialogSettings.get(IAntUIConstants.DIALOGSTORE_LASTEXTFILE);
 		if (lastUsedPath == null) {
 			lastUsedPath= ""; //$NON-NLS-1$
 		}
 		FileDialog dialog = new FileDialog(fileTableViewer.getControl().getShell(), SWT.MULTI);
 		dialog.setFilterExtensions(new String[] { "*.properties" }); //$NON-NLS-1$;
 		dialog.setFilterPath(lastUsedPath);

 		String result = dialog.open();
 		if (result == null) {
 			return;
 		}
 		IPath filterPath= new Path(dialog.getFilterPath());
 		String[] results= dialog.getFileNames();
 		for (int i = 0; i < results.length; i++) {
 			String fileName = results[i];
 			IPath path= filterPath.append(fileName).makeAbsolute();
 			((AntContentProvider)fileTableViewer.getContentProvider()).add(path.toOSString());
 		}

 		dialogSettings.put(IAntUIConstants.DIALOGSTORE_LASTEXTFILE, filterPath.toOSString());
 		container.update();
 	}

 	private void remove(TableViewer viewer) {
 		AntContentProvider antContentProvider= (AntContentProvider)viewer.getContentProvider();
 		IStructuredSelection sel = (IStructuredSelection) viewer.getSelection();
 		antContentProvider.remove(sel);
 		container.update();
 	}

 	/**
 	 * Allows the user to enter a user property
 	 */
 	private void addProperty() {
 		String title = AntPreferencesMessages.getString("AntPropertiesBlock.Add_Property_2");  //$NON-NLS-1$
 		AddPropertyDialog dialog = new AddPropertyDialog(propertyTableViewer.getControl().getShell(), title, new String[]{"", ""}); //$NON-NLS-1$ //$NON-NLS-2$
 		if (dialog.open() == Window.CANCEL) {
 			return;
 		}

 		String[] pair= dialog.getNameValuePair();
 		String name= pair[0];
 		if (!overwrite(name)) {
 			return;
 		}
 		Property prop = new Property();
 		prop.setName(name);
 		prop.setValue(pair[1]);
 		((AntContentProvider)propertyTableViewer.getContentProvider()).add(prop);
 		container.update();
 	}

 	private void edit() {
 		IStructuredSelection selection= (IStructuredSelection) propertyTableViewer.getSelection();
 		Property prop = (Property) selection.getFirstElement();

 		String originalName= prop.getName();
 		String title = AntPreferencesMessages.getString("AntPropertiesBlock.Edit_User_Property_5"); //$NON-NLS-1$
 		AddPropertyDialog dialog = new AddPropertyDialog(propertyTableViewer.getControl().getShell(), title, new String[]{prop.getName(), prop.getValue()});

 		if (dialog.open() == Window.CANCEL) {
 			return;
 		}

 		String[] pair= dialog.getNameValuePair();
 		String name= pair[0];
 		if (!name.equals(originalName)) {
 			if (!overwrite(name)){
 				return;
 			}
 		}
 		prop.setName(name);
 		prop.setValue(pair[1]);
 		//trigger a resort
 		propertyTableViewer.refresh();
 		container.update();
 	}

 	private boolean overwrite(String name) {
 		Object[] properties= getProperties();
 		for (int i = 0; i < properties.length; i++) {
 			Property property = (Property)properties[i];
 			String propertyName = property.getName();
 			if (propertyName.equals(name)) {
 				if (property.isDefault()) {
 					MessageDialog.openError(propertyTableViewer.getControl().getShell(), AntPreferencesMessages.getString("AntPropertiesBlock.17"), MessageFormat.format(AntPreferencesMessages.getString("AntPropertiesBlock.18"), new String[]{propertyName, property.getPluginLabel()})); //$NON-NLS-1$ //$NON-NLS-2$
 					return false;
 				} else {
 					boolean overWrite= MessageDialog.openQuestion(propertyTableViewer.getControl().getShell(), AntPreferencesMessages.getString("AntPropertiesBlock.15"), MessageFormat.format(AntPreferencesMessages.getString("AntPropertiesBlock.16"), new String[] {name}));  //$NON-NLS-1$ //$NON-NLS-2$
 					if (!overWrite) {
 						return false;
 					}
 				}
 				((AntContentProvider)propertyTableViewer.getContentProvider()).remove(property);
 				break;
 			}
 		}
 		return true;
 	}

 	/**
 	 * Handles selection changes in the Property file table viewer.
 	 */
 	private void fileTableSelectionChanged(IStructuredSelection newSelection) {
 		removeFileButton.setEnabled(newSelection.size() > 0);
 	}

 	/**
 	 * Handles selection changes in the Property table viewer.
 	 */
 	private void propertyTableSelectionChanged(IStructuredSelection newSelection) {
 		int size = newSelection.size();
 		boolean enabled= true;

 		Iterator itr= newSelection.iterator();
 		while (itr.hasNext()) {
 			Object element = itr.next();
 			if (element instanceof Property) {
 				Property property= (Property)element;
 				if (property.isDefault()) {
 					enabled= false;
 					break;
 				}
 			}
 		}
 		editButton.setEnabled(enabled && size == 1);
 		removeButton.setEnabled(enabled && size > 0);

 	}

 	public void populatePropertyViewer(Map properties) {
 		if (properties == null) {
 			propertyTableViewer.setInput(new Property[0]);
 			return;
 		}
 		Property[] result = new Property[properties.size()];
 		Iterator entries= properties.entrySet().iterator();
 		int i= 0;
 		while (entries.hasNext()) {
 			Map.Entry element = (Map.Entry) entries.next();
 			Property property = new Property();
 			property.setName((String)element.getKey());
 			property.setValue((String)element.getValue());
 			result[i]= property;
 			i++;
 		}
 		propertyTableViewer.setInput(result);
 	}

 	public void setPropertiesInput(Property[] properties) {
 		propertyTableViewer.setInput(properties);
 	}

 	public void setPropertyFilesInput(String[] files) {
 		fileTableViewer.setInput(files);
 	}

 	public void update() {
 		propertyTableSelectionChanged((IStructuredSelection) propertyTableViewer.getSelection());
 		fileTableSelectionChanged((IStructuredSelection)fileTableViewer.getSelection());
 	}

 	public Object[] getProperties() {
 		return ((AntContentProvider)propertyTableViewer.getContentProvider()).getElements(null);
 	}

 	public Object[] getPropertyFiles() {
 		return ((AntContentProvider)fileTableViewer.getContentProvider()).getElements(null);
 	}

 	public void setEnabled(boolean enable) {
 		setTablesEnabled(enable);
 		addButton.setEnabled(enable);
 		addExternalFileButton.setEnabled(enable);
 		addFileButton.setEnabled(enable);
 		editButton.setEnabled(enable);
 		removeButton.setEnabled(enable);
 		removeFileButton.setEnabled(enable);

 		if (enable) {
 			propertyTableViewer.setSelection(propertyTableViewer.getSelection());
 			fileTableViewer.setSelection(fileTableViewer.getSelection());
 		} else {
 			AntCorePreferences prefs = AntCorePlugin.getPlugin().getPreferences();
 			List properties= prefs.getProperties();
 			propertyTableViewer.setInput(properties);
 			fileTableViewer.setInput(prefs.getCustomPropertyFiles());
 		}
 	}

 	public void setTablesEnabled(boolean tablesEnabled) {
 		this.tablesEnabled= tablesEnabled;
 	}
 }
	/*******************************************************************************
	* 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.ant.internal.ui.preferences;


	import java.text.MessageFormat;
	import java.util.Arrays;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Map;

	import org.eclipse.ant.core.AntCorePlugin;
	import org.eclipse.ant.core.AntCorePreferences;
	import org.eclipse.ant.core.Property;
	import org.eclipse.ant.internal.ui.model.AntUIPlugin;
	import org.eclipse.ant.internal.ui.model.IAntUIConstants;
	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.runtime.Path;
	import org.eclipse.debug.core.variables.ILaunchVariableManager;
	import org.eclipse.debug.core.variables.LaunchVariableUtil;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.dialogs.IDialogSettings;
	import org.eclipse.jface.dialogs.MessageDialog;
	import org.eclipse.jface.viewers.DoubleClickEvent;
	import org.eclipse.jface.viewers.IDoubleClickListener;
	import org.eclipse.jface.viewers.ILabelProvider;
	import org.eclipse.jface.viewers.ISelectionChangedListener;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.ITreeContentProvider;
	import org.eclipse.jface.viewers.SelectionChangedEvent;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.viewers.ViewerFilter;
	import org.eclipse.jface.window.Window;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	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.FileDialog;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
	import org.eclipse.ui.model.WorkbenchContentProvider;
	import org.eclipse.ui.model.WorkbenchLabelProvider;
	import org.eclipse.ui.views.navigator.ResourceSorter;

	public class AntPropertiesBlock {

	private IAntBlockContainer container;

	private Button editButton;
	private Button removeButton;
	private Button addButton;

	private Button addFileButton;
	private Button addExternalFileButton;
	private Button removeFileButton;

	private TableViewer propertyTableViewer;
	private TableViewer fileTableViewer;

	private final AntObjectLabelProvider labelProvider = new AntObjectLabelProvider();

	private IDialogSettings dialogSettings;

	private boolean showExternal= false;

	private boolean tablesEnabled= true;

	/**
	* Button listener that delegates for widget selection events.
	*/
	private SelectionAdapter buttonListener= new SelectionAdapter() {
	public void widgetSelected(SelectionEvent event) {
	if (event.widget == addButton) {
	addProperty();
	} else if (event.widget == editButton) {
	edit();
	} else if (event.widget == removeButton) {
	remove(propertyTableViewer);
	} else if (event.widget == addFileButton) {
	addPropertyFile();
	} else if (event.widget == addExternalFileButton) {
	addExternalPropertyFile();
	} else if (event.widget == removeFileButton) {
	remove(fileTableViewer);
	}
	}
	};

	/**
	* Selection changed listener that delegates selection events.
	*/
	private ISelectionChangedListener tableListener= new ISelectionChangedListener() {
	public void selectionChanged(SelectionChangedEvent event) {
	if (tablesEnabled) {
	if (event.getSource() == propertyTableViewer) {
	propertyTableSelectionChanged((IStructuredSelection) event.getSelection());
	} else if (event.getSource() == fileTableViewer) {
	fileTableSelectionChanged((IStructuredSelection) event.getSelection());
	}
	}
	}
	};

	public AntPropertiesBlock(IAntBlockContainer container) {
	this.container= container;
	}

	private void addPropertyFile() {

	ViewerFilter filter= new PropertyFileFilter(Arrays.asList(getPropertyFiles()));
	ILabelProvider lp= new WorkbenchLabelProvider();
	ITreeContentProvider cp= new WorkbenchContentProvider();

	ElementTreeSelectionDialog dialog= new ElementTreeSelectionDialog(propertyTableViewer.getControl().getShell(), lp, cp);
	dialog.setTitle(AntPreferencesMessages.getString("AntPropertiesBlock.12")); //$NON-NLS-1$
	dialog.setMessage(AntPreferencesMessages.getString("AntPropertiesBlock.13")); //$NON-NLS-1$
	dialog.addFilter(filter);
	dialog.setInput(ResourcesPlugin.getWorkspace().getRoot());
	dialog.setSorter(new ResourceSorter(ResourceSorter.NAME));

	if (dialog.open() == Window.OK) {
	Object[] elements= dialog.getResult();
	for (int i = 0; i < elements.length; i++) {
	IFile file = (IFile)elements[i];
	String varExpression= LaunchVariableUtil.newVariableExpression(ILaunchVariableManager.VAR_WORKSPACE_LOC, file.getFullPath().toString());
	((AntContentProvider)fileTableViewer.getContentProvider()).add(varExpression);
	}
	container.update();
	}

	}

	public AntPropertiesBlock(IAntBlockContainer container, boolean showExternal) {
	this.container= container;
	this.showExternal= showExternal;
	}

	public void createControl(Composite top, String propertyLabel, String propertyFileLabel) {
	Font font= top.getFont();
	dialogSettings= AntUIPlugin.getDefault().getDialogSettings();

	Label label = new Label(top, SWT.NONE);
	GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	gd.horizontalSpan =2;
	label.setLayoutData(gd);
	label.setFont(font);
	label.setText(propertyLabel);

	propertyTableViewer= createTableViewer(top);
	propertyTableViewer.addDoubleClickListener(new IDoubleClickListener() {
	public void doubleClick(DoubleClickEvent event) {
	if (!event.getSelection().isEmpty() && editButton.isEnabled()) {
	edit();
	}
	}
	});

	createButtonGroup(top);

	label = new Label(top, SWT.NONE);
	gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING);
	gd.horizontalSpan =2;
	label.setLayoutData(gd);
	label.setFont(font);
	label.setText(propertyFileLabel);

	fileTableViewer= createTableViewer(top);
	createButtonGroup(top);
	}

	/**
	* Creates the group which will contain the buttons.
	*/
	private void createButtonGroup(Composite top) {
	Composite buttonGroup = new Composite(top, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.marginHeight = 0;
	layout.marginWidth = 0;
	buttonGroup.setLayout(layout);
	buttonGroup.setLayoutData(new GridData(GridData.FILL_VERTICAL \| GridData.HORIZONTAL_ALIGN_FILL));
	buttonGroup.setFont(top.getFont());

	addButtonsToButtonGroup(buttonGroup);
	}

	/**
	* Creates and returns a configured table viewer in the given parent
	*/
	private TableViewer createTableViewer(Composite parent) {
	Table table = new Table(parent, SWT.MULTI \| SWT.FULL_SELECTION \| SWT.BORDER);
	GridData data= new GridData(GridData.FILL_BOTH);
	data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
	table.setLayoutData(data);
	table.setFont(parent.getFont());

	TableViewer tableViewer= new TableViewer(table);
	tableViewer.setContentProvider(new AntContentProvider());
	tableViewer.setLabelProvider(labelProvider);
	tableViewer.addSelectionChangedListener(tableListener);
	return tableViewer;
	}

	/* (non-Javadoc)
	* Method declared on AntPage.
	*/
	protected void addButtonsToButtonGroup(Composite parent) {
	if (editButton == null) {
	addButton= createPushButton(parent, AntPreferencesMessages.getString("AntPropertiesBlock.1")); //$NON-NLS-1$
	editButton= createPushButton(parent, AntPreferencesMessages.getString("AntPropertiesBlock.2")); //$NON-NLS-1$
	removeButton= createPushButton(parent, AntPreferencesMessages.getString("AntPropertiesBlock.3")); //$NON-NLS-1$
	} else {
	if (showExternal) {
	addFileButton= createPushButton(parent, AntPreferencesMessages.getString("AntPropertiesBlock.4")); //$NON-NLS-1$
	}
	String label;
	if (showExternal) {
	label= AntPreferencesMessages.getString("AntPropertiesBlock.14"); //$NON-NLS-1$
	} else {
	label= AntPreferencesMessages.getString("AntPropertiesBlock.4"); //$NON-NLS-1$
	}
	addExternalFileButton= createPushButton(parent, label);
	removeFileButton= createPushButton(parent, AntPreferencesMessages.getString("AntPropertiesBlock.removeFileButton")); //$NON-NLS-1$
	}
	}

	/**
	* Creates and returns a configured button in the given composite with the given
	* label. Widget selection callbacks for the returned button will be processed
	* by the <code>buttonListener</code>
	*/
	private Button createPushButton(Composite parent, String label) {
	Button button= container.createPushButton(parent, label);
	button.addSelectionListener(buttonListener);
	GridData gridData = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.FILL_HORIZONTAL);
	button.setLayoutData(gridData);
	return button;
	}

	/**
	* Allows the user to enter external property files
	*/
	private void addExternalPropertyFile() {
	String lastUsedPath;
	lastUsedPath= dialogSettings.get(IAntUIConstants.DIALOGSTORE_LASTEXTFILE);
	if (lastUsedPath == null) {
	lastUsedPath= ""; //$NON-NLS-1$
	}
	FileDialog dialog = new FileDialog(fileTableViewer.getControl().getShell(), SWT.MULTI);
	dialog.setFilterExtensions(new String[] { "*.properties" }); //$NON-NLS-1$;
	dialog.setFilterPath(lastUsedPath);

	String result = dialog.open();
	if (result == null) {
	return;
	}
	IPath filterPath= new Path(dialog.getFilterPath());
	String[] results= dialog.getFileNames();
	for (int i = 0; i < results.length; i++) {
	String fileName = results[i];
	IPath path= filterPath.append(fileName).makeAbsolute();
	((AntContentProvider)fileTableViewer.getContentProvider()).add(path.toOSString());
	}

	dialogSettings.put(IAntUIConstants.DIALOGSTORE_LASTEXTFILE, filterPath.toOSString());
	container.update();
	}

	private void remove(TableViewer viewer) {
	AntContentProvider antContentProvider= (AntContentProvider)viewer.getContentProvider();
	IStructuredSelection sel = (IStructuredSelection) viewer.getSelection();
	antContentProvider.remove(sel);
	container.update();
	}

	/**
	* Allows the user to enter a user property
	*/
	private void addProperty() {
	String title = AntPreferencesMessages.getString("AntPropertiesBlock.Add_Property_2"); //$NON-NLS-1$
	AddPropertyDialog dialog = new AddPropertyDialog(propertyTableViewer.getControl().getShell(), title, new String[]{"", ""}); //$NON-NLS-1$ //$NON-NLS-2$
	if (dialog.open() == Window.CANCEL) {
	return;
	}

	String[] pair= dialog.getNameValuePair();
	String name= pair[0];
	if (!overwrite(name)) {
	return;
	}
	Property prop = new Property();
	prop.setName(name);
	prop.setValue(pair[1]);
	((AntContentProvider)propertyTableViewer.getContentProvider()).add(prop);
	container.update();
	}

	private void edit() {
	IStructuredSelection selection= (IStructuredSelection) propertyTableViewer.getSelection();
	Property prop = (Property) selection.getFirstElement();

	String originalName= prop.getName();
	String title = AntPreferencesMessages.getString("AntPropertiesBlock.Edit_User_Property_5"); //$NON-NLS-1$
	AddPropertyDialog dialog = new AddPropertyDialog(propertyTableViewer.getControl().getShell(), title, new String[]{prop.getName(), prop.getValue()});

	if (dialog.open() == Window.CANCEL) {
	return;
	}

	String[] pair= dialog.getNameValuePair();
	String name= pair[0];
	if (!name.equals(originalName)) {
	if (!overwrite(name)){
	return;
	}
	}
	prop.setName(name);
	prop.setValue(pair[1]);
	//trigger a resort
	propertyTableViewer.refresh();
	container.update();
	}

	private boolean overwrite(String name) {
	Object[] properties= getProperties();
	for (int i = 0; i < properties.length; i++) {
	Property property = (Property)properties[i];
	String propertyName = property.getName();
	if (propertyName.equals(name)) {
	if (property.isDefault()) {
	MessageDialog.openError(propertyTableViewer.getControl().getShell(), AntPreferencesMessages.getString("AntPropertiesBlock.17"), MessageFormat.format(AntPreferencesMessages.getString("AntPropertiesBlock.18"), new String[]{propertyName, property.getPluginLabel()})); //$NON-NLS-1$ //$NON-NLS-2$
	return false;
	} else {
	boolean overWrite= MessageDialog.openQuestion(propertyTableViewer.getControl().getShell(), AntPreferencesMessages.getString("AntPropertiesBlock.15"), MessageFormat.format(AntPreferencesMessages.getString("AntPropertiesBlock.16"), new String[] {name})); //$NON-NLS-1$ //$NON-NLS-2$
	if (!overWrite) {
	return false;
	}
	}
	((AntContentProvider)propertyTableViewer.getContentProvider()).remove(property);
	break;
	}
	}
	return true;
	}

	/**
	* Handles selection changes in the Property file table viewer.
	*/
	private void fileTableSelectionChanged(IStructuredSelection newSelection) {
	removeFileButton.setEnabled(newSelection.size() > 0);
	}

	/**
	* Handles selection changes in the Property table viewer.
	*/
	private void propertyTableSelectionChanged(IStructuredSelection newSelection) {
	int size = newSelection.size();
	boolean enabled= true;

	Iterator itr= newSelection.iterator();
	while (itr.hasNext()) {
	Object element = itr.next();
	if (element instanceof Property) {
	Property property= (Property)element;
	if (property.isDefault()) {
	enabled= false;
	break;
	}
	}
	}
	editButton.setEnabled(enabled && size == 1);
	removeButton.setEnabled(enabled && size > 0);

	}

	public void populatePropertyViewer(Map properties) {
	if (properties == null) {
	propertyTableViewer.setInput(new Property[0]);
	return;
	}
	Property[] result = new Property[properties.size()];
	Iterator entries= properties.entrySet().iterator();
	int i= 0;
	while (entries.hasNext()) {
	Map.Entry element = (Map.Entry) entries.next();
	Property property = new Property();
	property.setName((String)element.getKey());
	property.setValue((String)element.getValue());
	result[i]= property;
	i++;
	}
	propertyTableViewer.setInput(result);
	}

	public void setPropertiesInput(Property[] properties) {
	propertyTableViewer.setInput(properties);
	}

	public void setPropertyFilesInput(String[] files) {
	fileTableViewer.setInput(files);
	}

	public void update() {
	propertyTableSelectionChanged((IStructuredSelection) propertyTableViewer.getSelection());
	fileTableSelectionChanged((IStructuredSelection)fileTableViewer.getSelection());
	}

	public Object[] getProperties() {
	return ((AntContentProvider)propertyTableViewer.getContentProvider()).getElements(null);
	}

	public Object[] getPropertyFiles() {
	return ((AntContentProvider)fileTableViewer.getContentProvider()).getElements(null);
	}

	public void setEnabled(boolean enable) {
	setTablesEnabled(enable);
	addButton.setEnabled(enable);
	addExternalFileButton.setEnabled(enable);
	addFileButton.setEnabled(enable);
	editButton.setEnabled(enable);
	removeButton.setEnabled(enable);
	removeFileButton.setEnabled(enable);

	if (enable) {
	propertyTableViewer.setSelection(propertyTableViewer.getSelection());
	fileTableViewer.setSelection(fileTableViewer.getSelection());
	} else {
	AntCorePreferences prefs = AntCorePlugin.getPlugin().getPreferences();
	List properties= prefs.getProperties();
	propertyTableViewer.setInput(properties);
	fileTableViewer.setInput(prefs.getCustomPropertyFiles());
	}
	}

	public void setTablesEnabled(boolean tablesEnabled) {
	this.tablesEnabled= tablesEnabled;
	}
	}