plugins/org.eclipse.ease.ui/src/org/eclipse/ease/ui/launching/MainTab.java - ease/org.eclipse.ease.core - Git at Google

 /*******************************************************************************
  * Copyright (c) 2013 Christian Pontesegger and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * Contributors:
  *     Christian Pontesegger - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ease.ui.launching;

 import java.util.List;

 import org.eclipse.core.resources.IFile;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
 import org.eclipse.debug.ui.AbstractLaunchConfigurationTab;
 import org.eclipse.debug.ui.ILaunchConfigurationTab;
 import org.eclipse.ease.service.EngineDescription;
 import org.eclipse.ease.service.IScriptService;
 import org.eclipse.ease.service.ScriptType;
 import org.eclipse.ease.tools.ResourceTools;
 import org.eclipse.ease.ui.Activator;
 import org.eclipse.jface.viewers.ArrayContentProvider;
 import org.eclipse.jface.viewers.ComboViewer;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.LabelProvider;
 import org.eclipse.jface.viewers.StructuredSelection;
 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.Image;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Combo;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Group;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
 import org.eclipse.ui.model.WorkbenchContentProvider;
 import org.eclipse.ui.model.WorkbenchLabelProvider;

 public class MainTab extends AbstractLaunchConfigurationTab implements ILaunchConfigurationTab {

 	private boolean mDisableUpdate = false;

 	private Text txtSourceFile;

 	private Button chkSuspendOnScript;

 	private Button chkShowDynamicScript;
 	private Text fTxtStartupParameters;

 	private ComboViewer comboViewer;
 	private Button chkSuspendOnStartup;

 	@Override
 	public void setDefaults(final ILaunchConfigurationWorkingCopy configuration) {
 		configuration.setAttribute(LaunchConstants.FILE_LOCATION, "");
 		configuration.setAttribute(LaunchConstants.SCRIPT_ENGINE, "");
 		configuration.setAttribute(LaunchConstants.STARTUP_PARAMETERS, "");
 		configuration.setAttribute(LaunchConstants.SUSPEND_ON_STARTUP, false);
 		configuration.setAttribute(LaunchConstants.SUSPEND_ON_SCRIPT_LOAD, false);
 		configuration.setAttribute(LaunchConstants.DISPLAY_DYNAMIC_CODE, false);
 	}

 	@Override
 	public void initializeFrom(final ILaunchConfiguration configuration) {
 		mDisableUpdate = true;

 		txtSourceFile.setText("");
 		fTxtStartupParameters.setText("");
 		chkShowDynamicScript.setSelection(false);
 		chkSuspendOnStartup.setSelection(false);
 		chkSuspendOnScript.setSelection(false);

 		try {
 			txtSourceFile.setText(configuration.getAttribute(LaunchConstants.FILE_LOCATION, ""));

 			// Populate the engines first
 			populateScriptEngines();

 			final IScriptService scriptService = PlatformUI.getWorkbench().getService(IScriptService.class);
 			final EngineDescription engineDescription = scriptService.getEngineByID(configuration.getAttribute(LaunchConstants.SCRIPT_ENGINE, ""));
 			if (engineDescription != null)
 				comboViewer.setSelection(new StructuredSelection(engineDescription));

 			fTxtStartupParameters.setText(configuration.getAttribute(LaunchConstants.STARTUP_PARAMETERS, ""));

 			chkShowDynamicScript.setSelection(configuration.getAttribute(LaunchConstants.DISPLAY_DYNAMIC_CODE, false));
 			chkSuspendOnStartup.setSelection(configuration.getAttribute(LaunchConstants.SUSPEND_ON_STARTUP, false));
 			chkSuspendOnScript.setSelection(configuration.getAttribute(LaunchConstants.SUSPEND_ON_SCRIPT_LOAD, false));

 			chkSuspendOnScript.setEnabled(chkSuspendOnStartup.getSelection());

 		} catch (final CoreException e) {
 		}

 		mDisableUpdate = false;
 	}

 	@Override
 	public void performApply(final ILaunchConfigurationWorkingCopy configuration) {
 		configuration.setAttribute(LaunchConstants.FILE_LOCATION, txtSourceFile.getText());

 		final IStructuredSelection selection = (IStructuredSelection) comboViewer.getSelection();
 		if (!selection.isEmpty()) {
 			final EngineDescription engineDescription = (EngineDescription) selection.getFirstElement();
 			configuration.setAttribute(LaunchConstants.SCRIPT_ENGINE, engineDescription.getID());
 		}

 		configuration.setAttribute(LaunchConstants.STARTUP_PARAMETERS, fTxtStartupParameters.getText());

 		configuration.setAttribute(LaunchConstants.SUSPEND_ON_STARTUP, chkSuspendOnStartup.getSelection());
 		configuration.setAttribute(LaunchConstants.SUSPEND_ON_SCRIPT_LOAD, chkSuspendOnScript.getSelection() & chkSuspendOnStartup.getSelection());
 		configuration.setAttribute(LaunchConstants.DISPLAY_DYNAMIC_CODE, chkShowDynamicScript.getSelection());
 	}

 	@Override
 	public boolean isValid(final ILaunchConfiguration launchConfig) {
 		setErrorMessage(null);

 		// allow launch when a file is selected and file exists
 		try {
 			final Object file = ResourceTools.resolve(launchConfig.getAttribute(LaunchConstants.FILE_LOCATION, ""));
 			final boolean isFile = ResourceTools.isFile(file);
 			if (isFile) {
 				// check engine
 				final String selectedEngineID = launchConfig.getAttribute(LaunchConstants.SCRIPT_ENGINE, "");
 				final IScriptService scriptService = PlatformUI.getWorkbench().getService(IScriptService.class);
 				for (final EngineDescription description : scriptService.getEngines()) {
 					if (description.getID().equals(selectedEngineID))
 						return true;
 				}

 				setErrorMessage("Invalid script engine selected.");

 			} else
 				setErrorMessage("Invalid source file selected.");

 		} catch (final CoreException e) {
 			setErrorMessage("Invalid launch configuration detected.");
 		}

 		return false;
 	}

 	@Override
 	public boolean canSave() {
 		// allow save when a file location is entered - no matter if the file exists or not and an engine is selected
 		return (!txtSourceFile.getText().isEmpty()) && (!comboViewer.getSelection().isEmpty());
 	}

 	@Override
 	public String getMessage() {
 		return "Please select a script file.";
 	}

 	@Override
 	public String getName() {
 		return "Global";
 	}

 	/**
 	 * @wbp.parser.entryPoint
 	 */
 	@Override
 	public void createControl(final Composite parent) {
 		final Composite topControl = new Composite(parent, SWT.NONE);
 		topControl.setLayout(new GridLayout(1, false));

 		final Group grpScriptSource = new Group(topControl, SWT.NONE);
 		grpScriptSource.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
 		grpScriptSource.setText("&Script Source");
 		grpScriptSource.setLayout(new GridLayout(2, false));

 		txtSourceFile = new Text(grpScriptSource, SWT.BORDER);
 		txtSourceFile.addModifyListener(e -> {
 			if (!mDisableUpdate)
 				populateScriptEngines();
 		});
 		txtSourceFile.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));

 		final Button btnBrowseProject = new Button(grpScriptSource, SWT.NONE);
 		btnBrowseProject.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(final SelectionEvent e) {
 				final ElementTreeSelectionDialog dialog = new ElementTreeSelectionDialog(parent.getShell(), new WorkbenchLabelProvider(),
 						new WorkbenchContentProvider());
 				dialog.setTitle("Select script source file");
 				dialog.setMessage("Select the script file to execute:");
 				dialog.setInput(ResourcesPlugin.getWorkspace().getRoot());
 				if (dialog.open() == Window.OK)
 					txtSourceFile.setText("workspace:/" + ((IFile) dialog.getFirstResult()).getFullPath().toPortableString());
 			}
 		});
 		btnBrowseProject.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, true, false, 1, 1));
 		btnBrowseProject.setText("Browse &Workspace...");

 		final Button btnBrowseFilesystem = new Button(grpScriptSource, SWT.NONE);
 		btnBrowseFilesystem.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(final SelectionEvent e) {
 				final FileDialog dialog = new FileDialog(getShell(), SWT.OPEN);
 				final String fileName = dialog.open();
 				txtSourceFile.setText(ResourceTools.toAbsoluteLocation(fileName, null));
 			}
 		});
 		btnBrowseFilesystem.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
 		btnBrowseFilesystem.setText("Browse &Filesystem...");

 		final Group grpExecutionEngine = new Group(topControl, SWT.NONE);
 		grpExecutionEngine.setLayout(new GridLayout(1, false));
 		grpExecutionEngine.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
 		grpExecutionEngine.setText("&Execution Engine");

 		comboViewer = new ComboViewer(grpExecutionEngine, SWT.READ_ONLY);
 		final Combo combo = comboViewer.getCombo();
 		combo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
 		comboViewer.setContentProvider(ArrayContentProvider.getInstance());
 		comboViewer.setLabelProvider(new LabelProvider());
 		comboViewer.addSelectionChangedListener(e -> {
 			if (!mDisableUpdate)
 				updateLaunchConfigurationDialog();
 		});

 		final Group grpProgramArguments = new Group(topControl, SWT.NONE);
 		grpProgramArguments.setLayout(new GridLayout(1, false));
 		grpProgramArguments.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, true, 1, 1));
 		grpProgramArguments.setText("Script &arguments");

 		fTxtStartupParameters = new Text(grpProgramArguments, SWT.BORDER | SWT.WRAP | SWT.MULTI);
 		fTxtStartupParameters.addModifyListener(e -> {
 			if (!mDisableUpdate)
 				updateLaunchConfigurationDialog();
 		});
 		fTxtStartupParameters.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

 		// options only available in debug mode
 		final Group group = new Group(topControl, SWT.NONE);
 		group.setLayout(new GridLayout(1, false));
 		group.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
 		group.setText("Debug Options");

 		chkShowDynamicScript = new Button(group, SWT.CHECK);
 		chkShowDynamicScript.addSelectionListener(new SelectionAdapter() {

 			@Override
 			public void widgetSelected(final SelectionEvent e) {
 				if (!mDisableUpdate)
 					updateLaunchConfigurationDialog();
 			}
 		});
 		chkShowDynamicScript.setText("Show &dynamic script content");

 		chkSuspendOnStartup = new Button(group, SWT.CHECK);
 		chkSuspendOnStartup.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {
 				chkSuspendOnScript.setEnabled(chkSuspendOnStartup.getSelection());

 				if (!mDisableUpdate)
 					updateLaunchConfigurationDialog();
 			}
 		});
 		chkSuspendOnStartup.setText("Suspend on s&tartup");

 		chkSuspendOnScript = new Button(group, SWT.CHECK);
 		final GridData gd_chkSuspendOnScript = new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1);
 		gd_chkSuspendOnScript.horizontalIndent = 20;
 		chkSuspendOnScript.setLayoutData(gd_chkSuspendOnScript);
 		chkSuspendOnScript.addSelectionListener(new SelectionAdapter() {

 			@Override
 			public void widgetSelected(final SelectionEvent e) {
 				if (!mDisableUpdate)
 					updateLaunchConfigurationDialog();
 			}
 		});
 		chkSuspendOnScript.setText("Suspend on script &load");

 		setControl(topControl);
 	}

 	protected void populateScriptEngines() {

 		final IScriptService scriptService = PlatformUI.getWorkbench().getService(IScriptService.class);
 		ScriptType scriptType = null;

 		// resolve script type by file extension
 		final String sourceFile = txtSourceFile.getText();
 		scriptType = scriptService.getScriptType(sourceFile);

 		if (scriptType != null) {
 			final List<EngineDescription> engines = scriptService.getEngines(scriptType.getName());
 			if (isNewScriptTypeSelected(engines)) {
 				// if new script type selected from UI, change the engines tab with new inputs
 				comboViewer.setInput(engines);
 				comboViewer.refresh();
 			}
 			if ((comboViewer.getSelection().isEmpty()) && !engines.isEmpty()) {
 				comboViewer.setSelection(new StructuredSelection(engines.get(0)));
 			}
 		}

 		updateLaunchConfigurationDialog();
 	}

 	/**
 	 * Find if script with different script type selected.
 	 *
 	 * @param engines
 	 *            list of script engines available
 	 * @return true or false based on script type selected
 	 */
 	private boolean isNewScriptTypeSelected(List<EngineDescription> engines) {
 		if ((comboViewer != null) && (comboViewer.getInput() != null)) {
 			return !engines.containsAll((List<?>) comboViewer.getInput());
 		}
 		return true;
 	}

 	@Override
 	public Image getImage() {
 		return Activator.getImage(Activator.PLUGIN_ID, "/icons/eobj16/global_tab.gif", true);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2013 Christian Pontesegger and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* Contributors:
	* Christian Pontesegger - initial API and implementation
	*******************************************************************************/
	package org.eclipse.ease.ui.launching;

	import java.util.List;

	import org.eclipse.core.resources.IFile;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.debug.core.ILaunchConfiguration;
	import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
	import org.eclipse.debug.ui.AbstractLaunchConfigurationTab;
	import org.eclipse.debug.ui.ILaunchConfigurationTab;
	import org.eclipse.ease.service.EngineDescription;
	import org.eclipse.ease.service.IScriptService;
	import org.eclipse.ease.service.ScriptType;
	import org.eclipse.ease.tools.ResourceTools;
	import org.eclipse.ease.ui.Activator;
	import org.eclipse.jface.viewers.ArrayContentProvider;
	import org.eclipse.jface.viewers.ComboViewer;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.LabelProvider;
	import org.eclipse.jface.viewers.StructuredSelection;
	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.Image;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Combo;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Group;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.PlatformUI;
	import org.eclipse.ui.dialogs.ElementTreeSelectionDialog;
	import org.eclipse.ui.model.WorkbenchContentProvider;
	import org.eclipse.ui.model.WorkbenchLabelProvider;

	public class MainTab extends AbstractLaunchConfigurationTab implements ILaunchConfigurationTab {

	private boolean mDisableUpdate = false;

	private Text txtSourceFile;

	private Button chkSuspendOnScript;

	private Button chkShowDynamicScript;
	private Text fTxtStartupParameters;

	private ComboViewer comboViewer;
	private Button chkSuspendOnStartup;

	@Override
	public void setDefaults(final ILaunchConfigurationWorkingCopy configuration) {
	configuration.setAttribute(LaunchConstants.FILE_LOCATION, "");
	configuration.setAttribute(LaunchConstants.SCRIPT_ENGINE, "");
	configuration.setAttribute(LaunchConstants.STARTUP_PARAMETERS, "");
	configuration.setAttribute(LaunchConstants.SUSPEND_ON_STARTUP, false);
	configuration.setAttribute(LaunchConstants.SUSPEND_ON_SCRIPT_LOAD, false);
	configuration.setAttribute(LaunchConstants.DISPLAY_DYNAMIC_CODE, false);
	}

	@Override
	public void initializeFrom(final ILaunchConfiguration configuration) {
	mDisableUpdate = true;

	txtSourceFile.setText("");
	fTxtStartupParameters.setText("");
	chkShowDynamicScript.setSelection(false);
	chkSuspendOnStartup.setSelection(false);
	chkSuspendOnScript.setSelection(false);

	try {
	txtSourceFile.setText(configuration.getAttribute(LaunchConstants.FILE_LOCATION, ""));

	// Populate the engines first
	populateScriptEngines();

	final IScriptService scriptService = PlatformUI.getWorkbench().getService(IScriptService.class);
	final EngineDescription engineDescription = scriptService.getEngineByID(configuration.getAttribute(LaunchConstants.SCRIPT_ENGINE, ""));
	if (engineDescription != null)
	comboViewer.setSelection(new StructuredSelection(engineDescription));

	fTxtStartupParameters.setText(configuration.getAttribute(LaunchConstants.STARTUP_PARAMETERS, ""));

	chkShowDynamicScript.setSelection(configuration.getAttribute(LaunchConstants.DISPLAY_DYNAMIC_CODE, false));
	chkSuspendOnStartup.setSelection(configuration.getAttribute(LaunchConstants.SUSPEND_ON_STARTUP, false));
	chkSuspendOnScript.setSelection(configuration.getAttribute(LaunchConstants.SUSPEND_ON_SCRIPT_LOAD, false));

	chkSuspendOnScript.setEnabled(chkSuspendOnStartup.getSelection());

	} catch (final CoreException e) {
	}

	mDisableUpdate = false;
	}

	@Override
	public void performApply(final ILaunchConfigurationWorkingCopy configuration) {
	configuration.setAttribute(LaunchConstants.FILE_LOCATION, txtSourceFile.getText());

	final IStructuredSelection selection = (IStructuredSelection) comboViewer.getSelection();
	if (!selection.isEmpty()) {
	final EngineDescription engineDescription = (EngineDescription) selection.getFirstElement();
	configuration.setAttribute(LaunchConstants.SCRIPT_ENGINE, engineDescription.getID());
	}

	configuration.setAttribute(LaunchConstants.STARTUP_PARAMETERS, fTxtStartupParameters.getText());

	configuration.setAttribute(LaunchConstants.SUSPEND_ON_STARTUP, chkSuspendOnStartup.getSelection());
	configuration.setAttribute(LaunchConstants.SUSPEND_ON_SCRIPT_LOAD, chkSuspendOnScript.getSelection() & chkSuspendOnStartup.getSelection());
	configuration.setAttribute(LaunchConstants.DISPLAY_DYNAMIC_CODE, chkShowDynamicScript.getSelection());
	}

	@Override
	public boolean isValid(final ILaunchConfiguration launchConfig) {
	setErrorMessage(null);

	// allow launch when a file is selected and file exists
	try {
	final Object file = ResourceTools.resolve(launchConfig.getAttribute(LaunchConstants.FILE_LOCATION, ""));
	final boolean isFile = ResourceTools.isFile(file);
	if (isFile) {
	// check engine
	final String selectedEngineID = launchConfig.getAttribute(LaunchConstants.SCRIPT_ENGINE, "");
	final IScriptService scriptService = PlatformUI.getWorkbench().getService(IScriptService.class);
	for (final EngineDescription description : scriptService.getEngines()) {
	if (description.getID().equals(selectedEngineID))
	return true;
	}

	setErrorMessage("Invalid script engine selected.");

	} else
	setErrorMessage("Invalid source file selected.");

	} catch (final CoreException e) {
	setErrorMessage("Invalid launch configuration detected.");
	}

	return false;
	}

	@Override
	public boolean canSave() {
	// allow save when a file location is entered - no matter if the file exists or not and an engine is selected
	return (!txtSourceFile.getText().isEmpty()) && (!comboViewer.getSelection().isEmpty());
	}

	@Override
	public String getMessage() {
	return "Please select a script file.";
	}

	@Override
	public String getName() {
	return "Global";
	}

	/**
	* @wbp.parser.entryPoint
	*/
	@Override
	public void createControl(final Composite parent) {
	final Composite topControl = new Composite(parent, SWT.NONE);
	topControl.setLayout(new GridLayout(1, false));

	final Group grpScriptSource = new Group(topControl, SWT.NONE);
	grpScriptSource.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	grpScriptSource.setText("&Script Source");
	grpScriptSource.setLayout(new GridLayout(2, false));

	txtSourceFile = new Text(grpScriptSource, SWT.BORDER);
	txtSourceFile.addModifyListener(e -> {
	if (!mDisableUpdate)
	populateScriptEngines();
	});
	txtSourceFile.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1));

	final Button btnBrowseProject = new Button(grpScriptSource, SWT.NONE);
	btnBrowseProject.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(final SelectionEvent e) {
	final ElementTreeSelectionDialog dialog = new ElementTreeSelectionDialog(parent.getShell(), new WorkbenchLabelProvider(),
	new WorkbenchContentProvider());
	dialog.setTitle("Select script source file");
	dialog.setMessage("Select the script file to execute:");
	dialog.setInput(ResourcesPlugin.getWorkspace().getRoot());
	if (dialog.open() == Window.OK)
	txtSourceFile.setText("workspace:/" + ((IFile) dialog.getFirstResult()).getFullPath().toPortableString());
	}
	});
	btnBrowseProject.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, true, false, 1, 1));
	btnBrowseProject.setText("Browse &Workspace...");

	final Button btnBrowseFilesystem = new Button(grpScriptSource, SWT.NONE);
	btnBrowseFilesystem.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(final SelectionEvent e) {
	final FileDialog dialog = new FileDialog(getShell(), SWT.OPEN);
	final String fileName = dialog.open();
	txtSourceFile.setText(ResourceTools.toAbsoluteLocation(fileName, null));
	}
	});
	btnBrowseFilesystem.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1));
	btnBrowseFilesystem.setText("Browse &Filesystem...");

	final Group grpExecutionEngine = new Group(topControl, SWT.NONE);
	grpExecutionEngine.setLayout(new GridLayout(1, false));
	grpExecutionEngine.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	grpExecutionEngine.setText("&Execution Engine");

	comboViewer = new ComboViewer(grpExecutionEngine, SWT.READ_ONLY);
	final Combo combo = comboViewer.getCombo();
	combo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 1, 1));
	comboViewer.setContentProvider(ArrayContentProvider.getInstance());
	comboViewer.setLabelProvider(new LabelProvider());
	comboViewer.addSelectionChangedListener(e -> {
	if (!mDisableUpdate)
	updateLaunchConfigurationDialog();
	});

	final Group grpProgramArguments = new Group(topControl, SWT.NONE);
	grpProgramArguments.setLayout(new GridLayout(1, false));
	grpProgramArguments.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, true, 1, 1));
	grpProgramArguments.setText("Script &arguments");

	fTxtStartupParameters = new Text(grpProgramArguments, SWT.BORDER \| SWT.WRAP \| SWT.MULTI);
	fTxtStartupParameters.addModifyListener(e -> {
	if (!mDisableUpdate)
	updateLaunchConfigurationDialog();
	});
	fTxtStartupParameters.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

	// options only available in debug mode
	final Group group = new Group(topControl, SWT.NONE);
	group.setLayout(new GridLayout(1, false));
	group.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
	group.setText("Debug Options");

	chkShowDynamicScript = new Button(group, SWT.CHECK);
	chkShowDynamicScript.addSelectionListener(new SelectionAdapter() {

	@Override
	public void widgetSelected(final SelectionEvent e) {
	if (!mDisableUpdate)
	updateLaunchConfigurationDialog();
	}
	});
	chkShowDynamicScript.setText("Show &dynamic script content");

	chkSuspendOnStartup = new Button(group, SWT.CHECK);
	chkSuspendOnStartup.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {
	chkSuspendOnScript.setEnabled(chkSuspendOnStartup.getSelection());

	if (!mDisableUpdate)
	updateLaunchConfigurationDialog();
	}
	});
	chkSuspendOnStartup.setText("Suspend on s&tartup");

	chkSuspendOnScript = new Button(group, SWT.CHECK);
	final GridData gd_chkSuspendOnScript = new GridData(SWT.LEFT, SWT.CENTER, false, false, 1, 1);
	gd_chkSuspendOnScript.horizontalIndent = 20;
	chkSuspendOnScript.setLayoutData(gd_chkSuspendOnScript);
	chkSuspendOnScript.addSelectionListener(new SelectionAdapter() {

	@Override
	public void widgetSelected(final SelectionEvent e) {
	if (!mDisableUpdate)
	updateLaunchConfigurationDialog();
	}
	});
	chkSuspendOnScript.setText("Suspend on script &load");

	setControl(topControl);
	}

	protected void populateScriptEngines() {

	final IScriptService scriptService = PlatformUI.getWorkbench().getService(IScriptService.class);
	ScriptType scriptType = null;

	// resolve script type by file extension
	final String sourceFile = txtSourceFile.getText();
	scriptType = scriptService.getScriptType(sourceFile);

	if (scriptType != null) {
	final List<EngineDescription> engines = scriptService.getEngines(scriptType.getName());
	if (isNewScriptTypeSelected(engines)) {
	// if new script type selected from UI, change the engines tab with new inputs
	comboViewer.setInput(engines);
	comboViewer.refresh();
	}
	if ((comboViewer.getSelection().isEmpty()) && !engines.isEmpty()) {
	comboViewer.setSelection(new StructuredSelection(engines.get(0)));
	}
	}

	updateLaunchConfigurationDialog();
	}

	/**
	* Find if script with different script type selected.
	*
	* @param engines
	* list of script engines available
	* @return true or false based on script type selected
	*/
	private boolean isNewScriptTypeSelected(List<EngineDescription> engines) {
	if ((comboViewer != null) && (comboViewer.getInput() != null)) {
	return !engines.containsAll((List<?>) comboViewer.getInput());
	}
	return true;
	}

	@Override
	public Image getImage() {
	return Activator.getImage(Activator.PLUGIN_ID, "/icons/eobj16/global_tab.gif", true);
	}
	}