org.eclipse.jdt.debug.ui/ui/org/eclipse/jdt/debug/ui/launchConfigurations/AppletParametersTab.java - jdt/eclipse.jdt.debug - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * 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:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jdt.debug.ui.launchConfigurations;

 import java.util.HashMap;
 import java.util.Map;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
 import org.eclipse.jdt.internal.debug.ui.IJavaDebugHelpContextIds;
 import org.eclipse.jdt.internal.debug.ui.JavaDebugImages;
 import org.eclipse.jdt.internal.debug.ui.launcher.LauncherMessages;
 import org.eclipse.jdt.internal.debug.ui.launcher.NameValuePairDialog;
 import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants;
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.viewers.ColumnWeightData;
 import org.eclipse.jface.viewers.ILabelProviderListener;
 import org.eclipse.jface.viewers.IStructuredContentProvider;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.ITableLabelProvider;
 import org.eclipse.jface.viewers.TableLayout;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerComparator;
 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.MouseAdapter;
 import org.eclipse.swt.events.MouseEvent;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Image;
 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.Label;
 import org.eclipse.swt.widgets.Table;
 import org.eclipse.swt.widgets.TableColumn;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.PlatformUI;

 /**
  * This tab appears for java applet launch configurations and allows the user to edit
  * applet-specific attributes such as width, height, name & applet parameters.
  * <p>
  * This class may be instantiated. This class is not intended to be subclassed.
  * </p>
  * @since 2.1
  */
 public class AppletParametersTab extends JavaLaunchTab {

 	private Label fWidthLabel;
 	private Text fWidthText;
 	private Label fHeightLabel;
 	private Text fHeightText;
 	private Label fNameLabel;
 	private Text fNameText;
 	private Button fParametersAddButton;
 	private Button fParametersRemoveButton;
 	private Button fParametersEditButton;

 	private class AppletTabListener extends SelectionAdapter implements ModifyListener {

 		/* (non-Javadoc)
 		 * @see org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse.swt.events.ModifyEvent)
 		 */
 		public void modifyText(ModifyEvent e) {
 			updateLaunchConfigurationDialog();
 		}

 		/* (non-Javadoc)
 		 * @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
 		 */
 		public void widgetSelected(SelectionEvent e) {
 			Object source= e.getSource();
 			if (source == fViewer.getTable() || source == fViewer) {
 				setParametersButtonsEnableState();
 			} else if (source == fParametersAddButton) {
 				handleParametersAddButtonSelected();
 			} else if (source == fParametersEditButton) {
 				handleParametersEditButtonSelected();
 			} else if (source == fParametersRemoveButton) {
 				handleParametersRemoveButtonSelected();
 			}
 		}

 	}

 	private AppletTabListener fListener= new AppletTabListener();

 	private static final String EMPTY_STRING = "";	 //$NON-NLS-1$

 	/**
 	 * The default value for the 'width' attribute.
 	 */
 	public static final int DEFAULT_APPLET_WIDTH = 200;

 	/**
 	 * The default value for the 'height' attribute.
 	 */
 	public static final int DEFAULT_APPLET_HEIGHT = 200;

 	/**
 	 * The parameters table viewer
 	 */
 	private TableViewer fViewer;

 	/**
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#createControl(Composite)
 	 */
 	public void createControl(Composite parent) {
 		Composite comp = new Composite(parent, SWT.NONE);
 		setControl(comp);
 		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(),	IJavaDebugHelpContextIds.LAUNCH_CONFIGURATION_DIALOG_APPLET_PARAMETERS_TAB);
 		GridLayout topLayout = new GridLayout();
 		comp.setLayout(topLayout);
 		GridData gd;

 		Composite widthHeightNameComp = new Composite(comp, SWT.NONE);
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		widthHeightNameComp.setLayoutData(gd);
 		GridLayout widthHeightNameLayout = new GridLayout();
 		widthHeightNameLayout.marginHeight = 0;
 		widthHeightNameLayout.marginWidth = 0;
 		widthHeightNameLayout.numColumns = 4;
 		widthHeightNameComp.setLayout(widthHeightNameLayout);

 		fWidthLabel= new Label(widthHeightNameComp, SWT.NONE);
 		fWidthLabel.setText(LauncherMessages.appletlauncher_argumenttab_widthlabel_text);

 		fWidthText = new Text(widthHeightNameComp, SWT.SINGLE | SWT.BORDER);
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		fWidthText.setLayoutData(gd);
 		fWidthText.addModifyListener(fListener);

 		fNameLabel = new Label(widthHeightNameComp, SWT.NONE);
 		fNameLabel.setText(LauncherMessages.appletlauncher_argumenttab_namelabel_text);

 		fNameText = new Text(widthHeightNameComp, SWT.SINGLE | SWT.BORDER);
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		fNameText.setLayoutData(gd);
 		fNameText.addModifyListener(fListener);

 		fHeightLabel= new Label(widthHeightNameComp, SWT.NONE);
 		fHeightLabel.setText(LauncherMessages.appletlauncher_argumenttab_heightlabel_text);

 		fHeightText = new Text(widthHeightNameComp, SWT.SINGLE | SWT.BORDER);
 		gd = new GridData(GridData.FILL_HORIZONTAL);
 		fHeightText.setLayoutData(gd);
 		fHeightText.addModifyListener(fListener);

 		Label blank = new Label(widthHeightNameComp, SWT.NONE);
 		blank.setText(EMPTY_STRING);
 		Label hint = new Label(widthHeightNameComp, SWT.NONE);
 		hint.setText(LauncherMessages.AppletParametersTab__optional_applet_instance_name__1);
 		gd = new GridData(GridData.HORIZONTAL_ALIGN_CENTER);
 		hint.setLayoutData(gd);

 		createVerticalSpacer(comp);

 		Composite parametersComp = new Composite(comp, SWT.NONE);
 		gd = new GridData(GridData.FILL_BOTH);
 		parametersComp.setLayoutData(gd);
 		GridLayout parametersLayout = new GridLayout();
 		parametersLayout.numColumns = 2;
 		parametersLayout.marginHeight = 0;
 		parametersLayout.marginWidth = 0;
 		parametersComp.setLayout(parametersLayout);

 		Label parameterLabel = new Label(parametersComp, SWT.NONE);
 		parameterLabel.setText(LauncherMessages.appletlauncher_argumenttab_parameterslabel_text);
 		gd = new GridData();
 		gd.horizontalSpan = 2;
 		parameterLabel.setLayoutData(gd);


 		fViewer = new TableViewer(parametersComp);
 		Table parametersTable = fViewer.getTable();
 		gd = new GridData(GridData.FILL_BOTH);
 		parametersTable.setLayoutData(gd);
 		TableColumn column1 = new TableColumn(parametersTable, SWT.NONE);
 		column1.setText(LauncherMessages.appletlauncher_argumenttab_parameterscolumn_name_text);
 		TableColumn column2 = new TableColumn(parametersTable, SWT.NONE);
 		column2.setText(LauncherMessages.appletlauncher_argumenttab_parameterscolumn_value_text);
 		TableLayout tableLayout = new TableLayout();
 		parametersTable.setLayout(tableLayout);
 		tableLayout.addColumnData(new ColumnWeightData(100));
 		tableLayout.addColumnData(new ColumnWeightData(100));
 		parametersTable.setHeaderVisible(true);
 		parametersTable.setLinesVisible(true);
 		parametersTable.addSelectionListener(fListener);
 		parametersTable.addMouseListener(new MouseAdapter() {
 			public void mouseDoubleClick(MouseEvent e) {
 				setParametersButtonsEnableState();
 				if (fParametersEditButton.isEnabled()) {
 					handleParametersEditButtonSelected();
 				}
 			}
 		});

 		fViewer.setContentProvider(new IStructuredContentProvider() {
 			public Object[] getElements(Object inputElement) {
 				Map params = (Map) inputElement;
 				return params.keySet().toArray();
 			}
 			public void dispose() {
 			}
 			public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
 			}
 		});

 		fViewer.setLabelProvider(new ITableLabelProvider() {
 			public Image getColumnImage(Object element, int columnIndex) {
 				return null;
 			}
 			public String getColumnText(Object element, int columnIndex) {
 				if (columnIndex == 0) {
 					return element.toString();
 				}

 				String key = (String) element;
 				Map params = (Map) fViewer.getInput();
 				Object object = params.get(key);
 				if (object != null)
 					return object.toString();
 				return null;
 			}
 			public void addListener(ILabelProviderListener listener) {
 			}
 			public void dispose() {
 			}
 			public boolean isLabelProperty(Object element, String property) {
 				return false;
 			}
 			public void removeListener(ILabelProviderListener listener) {
 			}
 		});

 		fViewer.setComparator(new ViewerComparator());

 		Composite envButtonComp = new Composite(parametersComp, SWT.NONE);
 		GridLayout envButtonLayout = new GridLayout();
 		envButtonLayout.marginHeight = 0;
 		envButtonLayout.marginWidth = 0;
 		envButtonComp.setLayout(envButtonLayout);
 		gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL);
 		envButtonComp.setLayoutData(gd);

 		fParametersAddButton = createPushButton(envButtonComp ,LauncherMessages.appletlauncher_argumenttab_parameters_button_add_text, null);
 		fParametersAddButton.addSelectionListener(fListener);

 		fParametersEditButton = createPushButton(envButtonComp, LauncherMessages.appletlauncher_argumenttab_parameters_button_edit_text, null);
 		fParametersEditButton.addSelectionListener(fListener);

 		fParametersRemoveButton = createPushButton(envButtonComp, LauncherMessages.appletlauncher_argumenttab_parameters_button_remove_text, null);
 		fParametersRemoveButton.addSelectionListener(fListener);

 		Dialog.applyDialogFont(parent);
 	}


 	/**
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#isValid(ILaunchConfiguration)
 	 */
 	public boolean isValid(ILaunchConfiguration launchConfig) {
 		setErrorMessage(null);
 		try {
 			Integer.parseInt(getWidthText());
 		} catch(NumberFormatException nfe) {
 			setErrorMessage(LauncherMessages.appletlauncher_argumenttab_width_error_notaninteger);
 			return false;
 		}
 		try {
 			Integer.parseInt(getHeightText());
 		} catch(NumberFormatException nfe) {
 			setErrorMessage(LauncherMessages.appletlauncher_argumenttab_height_error_notaninteger);
 			return false;
 		}
 		return true;
 	}

 	private void handleParametersAddButtonSelected() {
 		NameValuePairDialog dialog =
 			new NameValuePairDialog(getShell(),
 				LauncherMessages.appletlauncher_argumenttab_parameters_dialog_add_title,
 				new String[] {LauncherMessages.appletlauncher_argumenttab_parameters_dialog_add_name_text, LauncherMessages.appletlauncher_argumenttab_parameters_dialog_add_value_text},  //
 				new String[] {EMPTY_STRING, EMPTY_STRING});
 		openNewParameterDialog(dialog, null);
 		setParametersButtonsEnableState();
 	}

 	private void handleParametersEditButtonSelected() {
 		IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
 		String key = (String) selection.getFirstElement();
 		Map params = (Map) fViewer.getInput();
 		String value = (String) params.get(key);

 		NameValuePairDialog dialog =
 			new NameValuePairDialog(getShell(),
 				LauncherMessages.appletlauncher_argumenttab_parameters_dialog_edit_title,
 				new String[] {LauncherMessages.appletlauncher_argumenttab_parameters_dialog_edit_name_text, LauncherMessages.appletlauncher_argumenttab_parameters_dialog_edit_value_text},  //
 				new String[] {key, value});

 		openNewParameterDialog(dialog, key);
 	}

 	private void handleParametersRemoveButtonSelected() {
 		IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
 		Object[] keys = selection.toArray();
 		for (int i = 0; i < keys.length; i++) {
 			String key = (String) keys[i];
 			Map params = (Map) fViewer.getInput();
 			params.remove(key);
 		}
 		fViewer.refresh();
 		setParametersButtonsEnableState();
 		updateLaunchConfigurationDialog();
 	}

 	/**
 	 * Set the enabled state of the three environment variable-related buttons based on the
 	 * selection in the Table widget.
 	 */
 	private void setParametersButtonsEnableState() {
 		IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
 		int selectCount = selection.size();
 		if (selectCount < 1) {
 			fParametersEditButton.setEnabled(false);
 			fParametersRemoveButton.setEnabled(false);
 		} else {
 			fParametersRemoveButton.setEnabled(true);
 			if (selectCount == 1) {
 				fParametersEditButton.setEnabled(true);
 			} else {
 				fParametersEditButton.setEnabled(false);
 			}
 		}
 		fParametersAddButton.setEnabled(true);
 	}

 	/**
 	 * Show the specified dialog and update the parameter table based on its results.
 	 *
 	 * @param updateItem the item to update, or <code>null</code> if
 	 *  adding a new item
 	 */
 	private void openNewParameterDialog(NameValuePairDialog dialog, String key) {
 		if (dialog.open() != Window.OK) {
 			return;
 		}
 		String[] nameValuePair = dialog.getNameValuePair();
 		Map params = (Map) fViewer.getInput();
 		params.remove(key);
 		params.put(nameValuePair[0], nameValuePair[1]);
 		fViewer.refresh();
 		updateLaunchConfigurationDialog();
 	}

 	/**
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#performApply(ILaunchConfigurationWorkingCopy)
 	 */
 	public void performApply(ILaunchConfigurationWorkingCopy configuration) {
 		try {
 			configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_WIDTH, Integer.parseInt(getWidthText()));
 		} catch (NumberFormatException e) {
 		}
 		try {
 			configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_HEIGHT, Integer.parseInt(getHeightText()));
 		} catch (NumberFormatException e) {
 		}
 		configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_NAME, fNameText.getText());
 		configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_PARAMETERS, (Map) fViewer.getInput());
 	}

 	/**
 	 * Returns the current width specified by the user
 	 * @return the width specified by the user
 	 */
 	private String getWidthText() {
 		return fWidthText.getText().trim();
 	}

 	/**
 	 * Returns the current height specified by the user
 	 * @return the height specified by the user
 	 */
 	private String getHeightText() {
 		return fHeightText.getText().trim();
 	}

 	/**
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#setDefaults(ILaunchConfigurationWorkingCopy)
 	 */
 	public void setDefaults(ILaunchConfigurationWorkingCopy configuration) {
 	}


 	/**
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#initializeFrom(ILaunchConfiguration)
 	 */
 	public void initializeFrom(ILaunchConfiguration config) {
 		try {
 			fWidthText.setText(Integer.toString(config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_WIDTH, DEFAULT_APPLET_WIDTH)));
 		} catch(CoreException ce) {
 			fWidthText.setText(Integer.toString(DEFAULT_APPLET_WIDTH));
 		}
 		try {
 			fHeightText.setText(Integer.toString(config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_HEIGHT, DEFAULT_APPLET_HEIGHT)));
 		} catch(CoreException ce) {
 			fHeightText.setText(Integer.toString(DEFAULT_APPLET_HEIGHT));
 		}
 		try {
 			fNameText.setText(config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_NAME, LauncherMessages.appletlauncher_argumenttab_name_defaultvalue));
 		} catch(CoreException ce) {
 			fNameText.setText(LauncherMessages.appletlauncher_argumenttab_name_defaultvalue);
 		}

 		Map input = new HashMap();
 		try {
 			 Map params = config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_PARAMETERS, (Map) null);
              if (params != null)
                  input.putAll(params);
 		} catch (CoreException e) {
 		}

 		fViewer.setInput(input);
 	}

 	/**
 	 * Create some empty space
 	 */
 	private void createVerticalSpacer(Composite comp) {
 		new Label(comp, SWT.NONE);
 	}

 	/**
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#getName()
 	 */
 	public String getName() {
 		return LauncherMessages.appletlauncher_argumenttab_name;
 	}

 	/**
 	 * @see org.eclipse.debug.ui.AbstractLaunchConfigurationTab#getId()
 	 *
 	 * @since 3.3
 	 */
 	public String getId() {
 		return "org.eclipse.jdt.debug.ui.appletParametersTab"; //$NON-NLS-1$
 	}

 	/**
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#getImage()
 	 */
 	public Image getImage() {
 		return JavaDebugImages.get(JavaDebugImages.IMG_VIEW_ARGUMENTS_TAB);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#activated(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
 	 */
 	public void activated(ILaunchConfigurationWorkingCopy workingCopy) {
 		// do nothing when activated
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#deactivated(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
 	 */
 	public void deactivated(ILaunchConfigurationWorkingCopy workingCopy) {
 		// do nothing when deactivated
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2006 IBM Corporation and others.
	* 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:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jdt.debug.ui.launchConfigurations;

	import java.util.HashMap;
	import java.util.Map;

	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.debug.core.ILaunchConfiguration;
	import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
	import org.eclipse.jdt.internal.debug.ui.IJavaDebugHelpContextIds;
	import org.eclipse.jdt.internal.debug.ui.JavaDebugImages;
	import org.eclipse.jdt.internal.debug.ui.launcher.LauncherMessages;
	import org.eclipse.jdt.internal.debug.ui.launcher.NameValuePairDialog;
	import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants;
	import org.eclipse.jface.dialogs.Dialog;
	import org.eclipse.jface.viewers.ColumnWeightData;
	import org.eclipse.jface.viewers.ILabelProviderListener;
	import org.eclipse.jface.viewers.IStructuredContentProvider;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.ITableLabelProvider;
	import org.eclipse.jface.viewers.TableLayout;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.viewers.ViewerComparator;
	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.MouseAdapter;
	import org.eclipse.swt.events.MouseEvent;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Image;
	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.Label;
	import org.eclipse.swt.widgets.Table;
	import org.eclipse.swt.widgets.TableColumn;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.PlatformUI;

	/**
	* This tab appears for java applet launch configurations and allows the user to edit
	* applet-specific attributes such as width, height, name & applet parameters.
	* <p>
	* This class may be instantiated. This class is not intended to be subclassed.
	* </p>
	* @since 2.1
	*/
	public class AppletParametersTab extends JavaLaunchTab {

	private Label fWidthLabel;
	private Text fWidthText;
	private Label fHeightLabel;
	private Text fHeightText;
	private Label fNameLabel;
	private Text fNameText;
	private Button fParametersAddButton;
	private Button fParametersRemoveButton;
	private Button fParametersEditButton;

	private class AppletTabListener extends SelectionAdapter implements ModifyListener {

	/* (non-Javadoc)
	* @see org.eclipse.swt.events.ModifyListener#modifyText(org.eclipse.swt.events.ModifyEvent)
	*/
	public void modifyText(ModifyEvent e) {
	updateLaunchConfigurationDialog();
	}

	/* (non-Javadoc)
	* @see org.eclipse.swt.events.SelectionListener#widgetSelected(org.eclipse.swt.events.SelectionEvent)
	*/
	public void widgetSelected(SelectionEvent e) {
	Object source= e.getSource();
	if (source == fViewer.getTable() \|\| source == fViewer) {
	setParametersButtonsEnableState();
	} else if (source == fParametersAddButton) {
	handleParametersAddButtonSelected();
	} else if (source == fParametersEditButton) {
	handleParametersEditButtonSelected();
	} else if (source == fParametersRemoveButton) {
	handleParametersRemoveButtonSelected();
	}
	}

	}

	private AppletTabListener fListener= new AppletTabListener();

	private static final String EMPTY_STRING = ""; //$NON-NLS-1$

	/**
	* The default value for the 'width' attribute.
	*/
	public static final int DEFAULT_APPLET_WIDTH = 200;

	/**
	* The default value for the 'height' attribute.
	*/
	public static final int DEFAULT_APPLET_HEIGHT = 200;

	/**
	* The parameters table viewer
	*/
	private TableViewer fViewer;

	/**
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#createControl(Composite)
	*/
	public void createControl(Composite parent) {
	Composite comp = new Composite(parent, SWT.NONE);
	setControl(comp);
	PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaDebugHelpContextIds.LAUNCH_CONFIGURATION_DIALOG_APPLET_PARAMETERS_TAB);
	GridLayout topLayout = new GridLayout();
	comp.setLayout(topLayout);
	GridData gd;

	Composite widthHeightNameComp = new Composite(comp, SWT.NONE);
	gd = new GridData(GridData.FILL_HORIZONTAL);
	widthHeightNameComp.setLayoutData(gd);
	GridLayout widthHeightNameLayout = new GridLayout();
	widthHeightNameLayout.marginHeight = 0;
	widthHeightNameLayout.marginWidth = 0;
	widthHeightNameLayout.numColumns = 4;
	widthHeightNameComp.setLayout(widthHeightNameLayout);

	fWidthLabel= new Label(widthHeightNameComp, SWT.NONE);
	fWidthLabel.setText(LauncherMessages.appletlauncher_argumenttab_widthlabel_text);

	fWidthText = new Text(widthHeightNameComp, SWT.SINGLE \| SWT.BORDER);
	gd = new GridData(GridData.FILL_HORIZONTAL);
	fWidthText.setLayoutData(gd);
	fWidthText.addModifyListener(fListener);

	fNameLabel = new Label(widthHeightNameComp, SWT.NONE);
	fNameLabel.setText(LauncherMessages.appletlauncher_argumenttab_namelabel_text);

	fNameText = new Text(widthHeightNameComp, SWT.SINGLE \| SWT.BORDER);
	gd = new GridData(GridData.FILL_HORIZONTAL);
	fNameText.setLayoutData(gd);
	fNameText.addModifyListener(fListener);

	fHeightLabel= new Label(widthHeightNameComp, SWT.NONE);
	fHeightLabel.setText(LauncherMessages.appletlauncher_argumenttab_heightlabel_text);

	fHeightText = new Text(widthHeightNameComp, SWT.SINGLE \| SWT.BORDER);
	gd = new GridData(GridData.FILL_HORIZONTAL);
	fHeightText.setLayoutData(gd);
	fHeightText.addModifyListener(fListener);

	Label blank = new Label(widthHeightNameComp, SWT.NONE);
	blank.setText(EMPTY_STRING);
	Label hint = new Label(widthHeightNameComp, SWT.NONE);
	hint.setText(LauncherMessages.AppletParametersTab__optional_applet_instance_name__1);
	gd = new GridData(GridData.HORIZONTAL_ALIGN_CENTER);
	hint.setLayoutData(gd);

	createVerticalSpacer(comp);

	Composite parametersComp = new Composite(comp, SWT.NONE);
	gd = new GridData(GridData.FILL_BOTH);
	parametersComp.setLayoutData(gd);
	GridLayout parametersLayout = new GridLayout();
	parametersLayout.numColumns = 2;
	parametersLayout.marginHeight = 0;
	parametersLayout.marginWidth = 0;
	parametersComp.setLayout(parametersLayout);

	Label parameterLabel = new Label(parametersComp, SWT.NONE);
	parameterLabel.setText(LauncherMessages.appletlauncher_argumenttab_parameterslabel_text);
	gd = new GridData();
	gd.horizontalSpan = 2;
	parameterLabel.setLayoutData(gd);


	fViewer = new TableViewer(parametersComp);
	Table parametersTable = fViewer.getTable();
	gd = new GridData(GridData.FILL_BOTH);
	parametersTable.setLayoutData(gd);
	TableColumn column1 = new TableColumn(parametersTable, SWT.NONE);
	column1.setText(LauncherMessages.appletlauncher_argumenttab_parameterscolumn_name_text);
	TableColumn column2 = new TableColumn(parametersTable, SWT.NONE);
	column2.setText(LauncherMessages.appletlauncher_argumenttab_parameterscolumn_value_text);
	TableLayout tableLayout = new TableLayout();
	parametersTable.setLayout(tableLayout);
	tableLayout.addColumnData(new ColumnWeightData(100));
	tableLayout.addColumnData(new ColumnWeightData(100));
	parametersTable.setHeaderVisible(true);
	parametersTable.setLinesVisible(true);
	parametersTable.addSelectionListener(fListener);
	parametersTable.addMouseListener(new MouseAdapter() {
	public void mouseDoubleClick(MouseEvent e) {
	setParametersButtonsEnableState();
	if (fParametersEditButton.isEnabled()) {
	handleParametersEditButtonSelected();
	}
	}
	});

	fViewer.setContentProvider(new IStructuredContentProvider() {
	public Object[] getElements(Object inputElement) {
	Map params = (Map) inputElement;
	return params.keySet().toArray();
	}
	public void dispose() {
	}
	public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
	}
	});

	fViewer.setLabelProvider(new ITableLabelProvider() {
	public Image getColumnImage(Object element, int columnIndex) {
	return null;
	}
	public String getColumnText(Object element, int columnIndex) {
	if (columnIndex == 0) {
	return element.toString();
	}

	String key = (String) element;
	Map params = (Map) fViewer.getInput();
	Object object = params.get(key);
	if (object != null)
	return object.toString();
	return null;
	}
	public void addListener(ILabelProviderListener listener) {
	}
	public void dispose() {
	}
	public boolean isLabelProperty(Object element, String property) {
	return false;
	}
	public void removeListener(ILabelProviderListener listener) {
	}
	});

	fViewer.setComparator(new ViewerComparator());

	Composite envButtonComp = new Composite(parametersComp, SWT.NONE);
	GridLayout envButtonLayout = new GridLayout();
	envButtonLayout.marginHeight = 0;
	envButtonLayout.marginWidth = 0;
	envButtonComp.setLayout(envButtonLayout);
	gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.HORIZONTAL_ALIGN_FILL);
	envButtonComp.setLayoutData(gd);

	fParametersAddButton = createPushButton(envButtonComp ,LauncherMessages.appletlauncher_argumenttab_parameters_button_add_text, null);
	fParametersAddButton.addSelectionListener(fListener);

	fParametersEditButton = createPushButton(envButtonComp, LauncherMessages.appletlauncher_argumenttab_parameters_button_edit_text, null);
	fParametersEditButton.addSelectionListener(fListener);

	fParametersRemoveButton = createPushButton(envButtonComp, LauncherMessages.appletlauncher_argumenttab_parameters_button_remove_text, null);
	fParametersRemoveButton.addSelectionListener(fListener);

	Dialog.applyDialogFont(parent);
	}


	/**
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#isValid(ILaunchConfiguration)
	*/
	public boolean isValid(ILaunchConfiguration launchConfig) {
	setErrorMessage(null);
	try {
	Integer.parseInt(getWidthText());
	} catch(NumberFormatException nfe) {
	setErrorMessage(LauncherMessages.appletlauncher_argumenttab_width_error_notaninteger);
	return false;
	}
	try {
	Integer.parseInt(getHeightText());
	} catch(NumberFormatException nfe) {
	setErrorMessage(LauncherMessages.appletlauncher_argumenttab_height_error_notaninteger);
	return false;
	}
	return true;
	}

	private void handleParametersAddButtonSelected() {
	NameValuePairDialog dialog =
	new NameValuePairDialog(getShell(),
	LauncherMessages.appletlauncher_argumenttab_parameters_dialog_add_title,
	new String[] {LauncherMessages.appletlauncher_argumenttab_parameters_dialog_add_name_text, LauncherMessages.appletlauncher_argumenttab_parameters_dialog_add_value_text}, //
	new String[] {EMPTY_STRING, EMPTY_STRING});
	openNewParameterDialog(dialog, null);
	setParametersButtonsEnableState();
	}

	private void handleParametersEditButtonSelected() {
	IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
	String key = (String) selection.getFirstElement();
	Map params = (Map) fViewer.getInput();
	String value = (String) params.get(key);

	NameValuePairDialog dialog =
	new NameValuePairDialog(getShell(),
	LauncherMessages.appletlauncher_argumenttab_parameters_dialog_edit_title,
	new String[] {LauncherMessages.appletlauncher_argumenttab_parameters_dialog_edit_name_text, LauncherMessages.appletlauncher_argumenttab_parameters_dialog_edit_value_text}, //
	new String[] {key, value});

	openNewParameterDialog(dialog, key);
	}

	private void handleParametersRemoveButtonSelected() {
	IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
	Object[] keys = selection.toArray();
	for (int i = 0; i < keys.length; i++) {
	String key = (String) keys[i];
	Map params = (Map) fViewer.getInput();
	params.remove(key);
	}
	fViewer.refresh();
	setParametersButtonsEnableState();
	updateLaunchConfigurationDialog();
	}

	/**
	* Set the enabled state of the three environment variable-related buttons based on the
	* selection in the Table widget.
	*/
	private void setParametersButtonsEnableState() {
	IStructuredSelection selection = (IStructuredSelection) fViewer.getSelection();
	int selectCount = selection.size();
	if (selectCount < 1) {
	fParametersEditButton.setEnabled(false);
	fParametersRemoveButton.setEnabled(false);
	} else {
	fParametersRemoveButton.setEnabled(true);
	if (selectCount == 1) {
	fParametersEditButton.setEnabled(true);
	} else {
	fParametersEditButton.setEnabled(false);
	}
	}
	fParametersAddButton.setEnabled(true);
	}

	/**
	* Show the specified dialog and update the parameter table based on its results.
	*
	* @param updateItem the item to update, or <code>null</code> if
	* adding a new item
	*/
	private void openNewParameterDialog(NameValuePairDialog dialog, String key) {
	if (dialog.open() != Window.OK) {
	return;
	}
	String[] nameValuePair = dialog.getNameValuePair();
	Map params = (Map) fViewer.getInput();
	params.remove(key);
	params.put(nameValuePair[0], nameValuePair[1]);
	fViewer.refresh();
	updateLaunchConfigurationDialog();
	}

	/**
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#performApply(ILaunchConfigurationWorkingCopy)
	*/
	public void performApply(ILaunchConfigurationWorkingCopy configuration) {
	try {
	configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_WIDTH, Integer.parseInt(getWidthText()));
	} catch (NumberFormatException e) {
	}
	try {
	configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_HEIGHT, Integer.parseInt(getHeightText()));
	} catch (NumberFormatException e) {
	}
	configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_NAME, fNameText.getText());
	configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_PARAMETERS, (Map) fViewer.getInput());
	}

	/**
	* Returns the current width specified by the user
	* @return the width specified by the user
	*/
	private String getWidthText() {
	return fWidthText.getText().trim();
	}

	/**
	* Returns the current height specified by the user
	* @return the height specified by the user
	*/
	private String getHeightText() {
	return fHeightText.getText().trim();
	}

	/**
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#setDefaults(ILaunchConfigurationWorkingCopy)
	*/
	public void setDefaults(ILaunchConfigurationWorkingCopy configuration) {
	}


	/**
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#initializeFrom(ILaunchConfiguration)
	*/
	public void initializeFrom(ILaunchConfiguration config) {
	try {
	fWidthText.setText(Integer.toString(config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_WIDTH, DEFAULT_APPLET_WIDTH)));
	} catch(CoreException ce) {
	fWidthText.setText(Integer.toString(DEFAULT_APPLET_WIDTH));
	}
	try {
	fHeightText.setText(Integer.toString(config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_HEIGHT, DEFAULT_APPLET_HEIGHT)));
	} catch(CoreException ce) {
	fHeightText.setText(Integer.toString(DEFAULT_APPLET_HEIGHT));
	}
	try {
	fNameText.setText(config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_NAME, LauncherMessages.appletlauncher_argumenttab_name_defaultvalue));
	} catch(CoreException ce) {
	fNameText.setText(LauncherMessages.appletlauncher_argumenttab_name_defaultvalue);
	}

	Map input = new HashMap();
	try {
	Map params = config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_APPLET_PARAMETERS, (Map) null);
	if (params != null)
	input.putAll(params);
	} catch (CoreException e) {
	}

	fViewer.setInput(input);
	}

	/**
	* Create some empty space
	*/
	private void createVerticalSpacer(Composite comp) {
	new Label(comp, SWT.NONE);
	}

	/**
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#getName()
	*/
	public String getName() {
	return LauncherMessages.appletlauncher_argumenttab_name;
	}

	/**
	* @see org.eclipse.debug.ui.AbstractLaunchConfigurationTab#getId()
	*
	* @since 3.3
	*/
	public String getId() {
	return "org.eclipse.jdt.debug.ui.appletParametersTab"; //$NON-NLS-1$
	}

	/**
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#getImage()
	*/
	public Image getImage() {
	return JavaDebugImages.get(JavaDebugImages.IMG_VIEW_ARGUMENTS_TAB);
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#activated(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
	*/
	public void activated(ILaunchConfigurationWorkingCopy workingCopy) {
	// do nothing when activated
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#deactivated(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
	*/
	public void deactivated(ILaunchConfigurationWorkingCopy workingCopy) {
	// do nothing when deactivated
	}
	}