org.eclipse.ui.externaltools/External Tools Base/org/eclipse/ui/externaltools/internal/launchConfigurations/ExternalToolsMainTab.java - gerrit/platform/eclipse.platform.debug - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2004 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.ui.externaltools.internal.launchConfigurations;


 import java.io.File;

 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IPath;
 import org.eclipse.core.variables.IStringVariableManager;
 import org.eclipse.core.variables.VariablesPlugin;
 import org.eclipse.debug.core.ILaunchConfiguration;
 import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
 import org.eclipse.debug.internal.ui.stringsubstitution.StringVariableSelectionDialog;
 import org.eclipse.debug.ui.AbstractLaunchConfigurationTab;
 import org.eclipse.jface.dialogs.IDialogConstants;
 import org.eclipse.jface.window.Window;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Font;
 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.DirectoryDialog;
 import org.eclipse.swt.widgets.FileDialog;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.ui.dialogs.ContainerSelectionDialog;
 import org.eclipse.ui.dialogs.ResourceSelectionDialog;
 import org.eclipse.ui.externaltools.internal.model.ExternalToolsImages;
 import org.eclipse.ui.externaltools.internal.model.ExternalToolsPlugin;
 import org.eclipse.ui.externaltools.internal.model.IExternalToolConstants;

 public abstract class ExternalToolsMainTab extends AbstractLaunchConfigurationTab {
 	public final static String FIRST_EDIT = "editedByExternalToolsMainTab"; //$NON-NLS-1$

 	protected Text locationField;
 	protected Text workDirectoryField;
 	protected Button fileLocationButton;
 	protected Button workspaceLocationButton;
 	protected Button fileWorkingDirectoryButton;
 	protected Button workspaceWorkingDirectoryButton;

 	protected Text argumentField;
 	protected Button variableButton;

 	protected SelectionAdapter selectionAdapter;

 	protected boolean fInitializing= false;
 	private boolean userEdited= false;

 	/**
 	 * A listener to update for text modification and widget selection.
 	 */
 	protected class WidgetListener extends SelectionAdapter implements ModifyListener {
 		public void modifyText(ModifyEvent e) {
 			if (!fInitializing) {
 				setDirty(true);
 				userEdited= true;
 				updateLaunchConfigurationDialog();
 			}
 		}
 		public void widgetSelected(SelectionEvent e) {
 			setDirty(true);
 			Object source= e.getSource();
 			if (source == variableButton) {
 				StringVariableSelectionDialog dialog= new StringVariableSelectionDialog(getShell());
 				if (dialog.open() == Window.OK) {
 					argumentField.insert(dialog.getVariableExpression());
 				}
 			} else if (source == workspaceLocationButton) {
 				handleWorkspaceLocationButtonSelected();
 			} else if (source == fileLocationButton) {
 				handleLocationButtonSelected();
 			} else if (source == workspaceWorkingDirectoryButton) {
 				handleWorkspaceWorkingDirectoryButtonSelected();
 			} else if (source == fileWorkingDirectoryButton) {
 				handleFileWorkingDirectoryButtonSelected();
 			}
 		}
 	}

 	protected WidgetListener fListener= new WidgetListener();

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#createControl(org.eclipse.swt.widgets.Composite)
 	 */
 	public void createControl(Composite parent) {
 		Composite mainComposite = new Composite(parent, SWT.NONE);
 		setControl(mainComposite);

 		GridLayout layout = new GridLayout();
 		layout.numColumns = 2;
 		GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
 		mainComposite.setLayout(layout);
 		mainComposite.setLayoutData(gridData);
 		mainComposite.setFont(parent.getFont());
 		createLocationComponent(mainComposite);
 		createWorkDirectoryComponent(mainComposite);
 		createArgumentComponent(mainComposite);
 		createVerticalSpacer(mainComposite, 2);
 	}

 	/**
 	 * Creates the controls needed to edit the location
 	 * attribute of an external tool
 	 *
 	 * @param parent the composite to create the controls in
 	 */
 	protected void createLocationComponent(Composite parent) {
 		Font font = parent.getFont();

 		Composite composite = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		layout.numColumns = 1;
 		GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
 		composite.setLayout(layout);
 		composite.setLayoutData(gridData);

 		Label label = new Label(composite, SWT.NONE);
 		label.setText(getLocationLabel());
 		label.setFont(font);

 		locationField = new Text(composite, SWT.BORDER);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
 		locationField.setLayoutData(data);
 		locationField.setFont(font);

 		Composite buttonComposite = new Composite(parent, SWT.NONE);
 		layout = new GridLayout();
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		layout.numColumns = 1;
 		gridData = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		buttonComposite.setLayout(layout);
 		buttonComposite.setLayoutData(gridData);
 		buttonComposite.setFont(font);

 		createVerticalSpacer(buttonComposite, 1);

 		workspaceLocationButton= createPushButton(buttonComposite, ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.&Browse_Workspace..._3"), null); //$NON-NLS-1$
 		workspaceLocationButton.addSelectionListener(fListener);
 		fileLocationButton= createPushButton(buttonComposite, ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Brows&e_File_System..._4"), null); //$NON-NLS-1$

 		fileLocationButton.addSelectionListener(fListener);
 		locationField.addModifyListener(fListener);
 	}

 	protected String getLocationLabel() {
 		return ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.&Location___2"); //$NON-NLS-1$
 	}

 	/**
 	 * Creates the controls needed to edit the working directory
 	 * attribute of an external tool
 	 *
 	 * @param parent the composite to create the controls in
 	 */
 	protected void createWorkDirectoryComponent(Composite parent) {
 		Font font = parent.getFont();

 		Composite composite = new Composite(parent, SWT.NONE);
 		GridLayout layout = new GridLayout();
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		layout.numColumns = 1;
 		GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
 		composite.setLayout(layout);
 		composite.setLayoutData(gridData);

 		Label label = new Label(composite, SWT.NONE);
 		label.setText(getWorkingDirectoryLabel());
 		label.setFont(font);

 		workDirectoryField = new Text(composite, SWT.BORDER);
 		GridData data = new GridData(GridData.FILL_HORIZONTAL);
 		data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
 		workDirectoryField.setLayoutData(data);
 		workDirectoryField.setFont(font);

 		Composite buttonComposite = new Composite(parent, SWT.NONE);
 		layout = new GridLayout();
 		layout.marginWidth = 0;
 		layout.marginHeight = 0;
 		layout.numColumns = 1;
 		gridData = new GridData(GridData.HORIZONTAL_ALIGN_END);
 		buttonComposite.setLayout(layout);
 		buttonComposite.setLayoutData(gridData);
 		buttonComposite.setFont(font);

 		createVerticalSpacer(buttonComposite, 1);
 		workspaceWorkingDirectoryButton= createPushButton(buttonComposite, ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Browse_Wor&kspace..._6"), null); //$NON-NLS-1$
 		workspaceWorkingDirectoryButton.addSelectionListener(fListener);
 		fileWorkingDirectoryButton= createPushButton(buttonComposite, ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Browse_F&ile_System..._7"), null); //$NON-NLS-1$

 		fileWorkingDirectoryButton.addSelectionListener(fListener);
 		workDirectoryField.addModifyListener(fListener);
 	}
 	/**
 	 * Return the String to use as the label for the working directory field.
 	 * @return String
 	 */
 	protected String getWorkingDirectoryLabel() {
 		return ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Working_&Directory__5"); //$NON-NLS-1$
 	}

 	/**
 	 * Creates the controls needed to edit the argument and
 	 * prompt for argument attributes of an external tool
 	 *
 	 * @param parent the composite to create the controls in
 	 */
 	protected void createArgumentComponent(Composite parent) {
 		Font font = parent.getFont();

 		Label label = new Label(parent, SWT.NONE);
 		label.setText(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.&Arguments___1")); //$NON-NLS-1$
 		GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 		data.horizontalSpan = 2;
 		label.setLayoutData(data);
 		label.setFont(font);

 		argumentField = new Text(parent, SWT.MULTI | SWT.WRAP | SWT.BORDER | SWT.V_SCROLL);
 		data = new GridData(GridData.FILL_BOTH);
 		data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
 		data.heightHint= 40;
 		argumentField.setLayoutData(data);
 		argumentField.setFont(font);
 		argumentField.addModifyListener(fListener);

 		variableButton= createPushButton(parent, ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Varia&bles..._2"), null); //$NON-NLS-1$
 		GridData gridData = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL);
 		variableButton.setLayoutData(gridData);
 		variableButton.addSelectionListener(fListener);

 		Label instruction = new Label(parent, SWT.NONE);
 		instruction.setText(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.3")); //$NON-NLS-1$
 		data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 		data.horizontalSpan = 2;
 		instruction.setLayoutData(data);
 		instruction.setFont(font);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#setDefaults(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
 	 */
 	public void setDefaults(ILaunchConfigurationWorkingCopy configuration) {
 		configuration.setAttribute(FIRST_EDIT, true);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#initializeFrom(org.eclipse.debug.core.ILaunchConfiguration)
 	 */
 	public void initializeFrom(ILaunchConfiguration configuration) {
 		fInitializing= true;
 		updateLocation(configuration);
 		updateWorkingDirectory(configuration);
 		updateArgument(configuration);
 		fInitializing= false;
 		setDirty(false);
 	}

 	protected void updateWorkingDirectory(ILaunchConfiguration configuration) {
 		String workingDir= ""; //$NON-NLS-1$
 		try {
 			workingDir= configuration.getAttribute(IExternalToolConstants.ATTR_WORKING_DIRECTORY, ""); //$NON-NLS-1$
 		} catch (CoreException ce) {
 			ExternalToolsPlugin.getDefault().log(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Error_reading_configuration_10"), ce); //$NON-NLS-1$
 		}
 		workDirectoryField.setText(workingDir);
 	}

 	protected void updateLocation(ILaunchConfiguration configuration) {
 		String location= ""; //$NON-NLS-1$
 		try {
 			location= configuration.getAttribute(IExternalToolConstants.ATTR_LOCATION, ""); //$NON-NLS-1$
 		} catch (CoreException ce) {
 			ExternalToolsPlugin.getDefault().log(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Error_reading_configuration_10"), ce); //$NON-NLS-1$
 		}
 		locationField.setText(location);
 	}

 	protected void updateArgument(ILaunchConfiguration configuration) {
 		String arguments= ""; //$NON-NLS-1$
 		try {
 			arguments= configuration.getAttribute(IExternalToolConstants.ATTR_TOOL_ARGUMENTS, ""); //$NON-NLS-1$
 		} catch (CoreException ce) {
 			ExternalToolsPlugin.getDefault().log(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Error_reading_configuration_7"), ce); //$NON-NLS-1$
 		}
 		argumentField.setText(arguments);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#performApply(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
 	 */
 	public void performApply(ILaunchConfigurationWorkingCopy configuration) {
 		String location= locationField.getText().trim();
 		if (location.length() == 0) {
 			configuration.setAttribute(IExternalToolConstants.ATTR_LOCATION, (String)null);
 		} else {
 			configuration.setAttribute(IExternalToolConstants.ATTR_LOCATION, location);
 		}

 		String workingDirectory= workDirectoryField.getText().trim();
 		if (workingDirectory.length() == 0) {
 			configuration.setAttribute(IExternalToolConstants.ATTR_WORKING_DIRECTORY, (String)null);
 		} else {
 			configuration.setAttribute(IExternalToolConstants.ATTR_WORKING_DIRECTORY, workingDirectory);
 		}

 		String arguments= argumentField.getText().trim();
 		if (arguments.length() == 0) {
 			configuration.setAttribute(IExternalToolConstants.ATTR_TOOL_ARGUMENTS, (String)null);
 		} else {
 			configuration.setAttribute(IExternalToolConstants.ATTR_TOOL_ARGUMENTS, arguments);
 		}

 		if(userEdited) {
 			configuration.setAttribute(FIRST_EDIT, (String)null);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#getName()
 	 */
 	public String getName() {
 		return ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.&Main_17"); //$NON-NLS-1$
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#isValid(org.eclipse.debug.core.ILaunchConfiguration)
 	 */
 	public boolean isValid(ILaunchConfiguration launchConfig) {
 		setErrorMessage(null);
 		setMessage(null);
 		boolean newConfig = false;
 		try {
 			newConfig = launchConfig.getAttribute(FIRST_EDIT, false);
 		} catch (CoreException e) {
 			//assume false is correct
 		}
 		return validateLocation(newConfig) && validateWorkDirectory();
 	}

 	/**
 	 * Validates the content of the location field.
 	 */
 	protected boolean validateLocation(boolean newConfig) {
 		String value = locationField.getText().trim();

 		if (value.length() < 1) {
 			if (newConfig) {
 				setErrorMessage(null);
 				setMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.30"));  //$NON-NLS-1$
 			} else {
 				setErrorMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.External_tool_location_cannot_be_empty_18")); //$NON-NLS-1$
 				setMessage(null);
 			}
 			return false;
 		}

 		String location = null;
 		try {
 			location= getValue(value);
 		} catch (CoreException e) {
 			setErrorMessage(e.getMessage());
 			return false;
 		}


 		File file = new File(location);
 		if (!file.exists()) { // The file does not exist.
 			if (!newConfig) {
 				setErrorMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.External_tool_location_does_not_exist_19")); //$NON-NLS-1$
 			}
 			return false;
 		}
 		if (!file.isFile()) {
 			if (!newConfig) {
 				setErrorMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.External_tool_location_specified_is_not_a_file_20")); //$NON-NLS-1$

 			}
 			return false;
 		}
 		return true;
 	}


 	/**
 	 * Returns the value of the given string with all variables substituted (if any).
 	 *
 	 * @param expression expression with variables
 	 * @return resolved value of expression
 	 * @exception CoreException if variable substitution fails
 	 */
 	private String getValue(String expression) throws CoreException {
 		IStringVariableManager manager = VariablesPlugin.getDefault().getStringVariableManager();
 		return manager.performStringSubstitution(expression);
 	}

 	/**
 	 * Validates the content of the working directory field.
 	 */
 	protected boolean validateWorkDirectory() {

 		String value = workDirectoryField.getText().trim();
 		if (value.length() <= 0) {
 			return true;
 		}

 		String dir = null;
 		try {
 			dir= getValue(value);
 		} catch (CoreException e) {
 			setErrorMessage(e.getMessage());
 			return false;
 		}

 		File file = new File(dir);
 		if (!file.exists()) { // The directory does not exist.
 			setErrorMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.External_tool_working_directory_does_not_exist_or_is_invalid_21")); //$NON-NLS-1$
 			return false;
 		}
 		if (!file.isDirectory()) {
 			setErrorMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Not_a_directory")); //$NON-NLS-1$
 			return false;
 		}
 		return true;
 	}

 	protected void handleLocationButtonSelected() {
 		FileDialog fileDialog = new FileDialog(getShell(), SWT.NONE);
 		fileDialog.setFileName(locationField.getText());
 		String text= fileDialog.open();
 		if (text != null) {
 			locationField.setText(text);
 		}
 	}

 	/**
 	 * Prompts the user for a workspace location within the workspace and sets
 	 * the location as a String containing the workspace_loc variable or
 	 * <code>null</code> if no location was obtained from the user.
 	 */
 	protected void handleWorkspaceLocationButtonSelected() {
 		ResourceSelectionDialog dialog;
 		dialog = new ResourceSelectionDialog(getShell(), ResourcesPlugin.getWorkspace().getRoot(), ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Select_a_resource_22")); //$NON-NLS-1$
 		dialog.open();
 		Object[] results = dialog.getResult();
 		if (results == null || results.length < 1) {
 			return;
 		}
 		IResource resource = (IResource)results[0];
 		locationField.setText(newVariableExpression("workspace_loc", resource.getFullPath().toString())); //$NON-NLS-1$
 	}

 	protected String newVariableExpression(String varName, String arg) {
 		return VariablesPlugin.getDefault().getStringVariableManager().generateVariableExpression(varName, arg);
 	}

 	/**
 	 * Prompts the user for a working directory location within the workspace
 	 * and sets the working directory as a String containing the workspace_loc
 	 * variable or <code>null</code> if no location was obtained from the user.
 	 */
 	protected void handleWorkspaceWorkingDirectoryButtonSelected() {
 		ContainerSelectionDialog containerDialog;
 		containerDialog = new ContainerSelectionDialog(
 			getShell(),
 			ResourcesPlugin.getWorkspace().getRoot(),
 			false,
 			ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.23")); //$NON-NLS-1$
 		containerDialog.open();
 		Object[] resource = containerDialog.getResult();
 		String text= null;
 		if (resource != null && resource.length > 0) {
 			text= newVariableExpression("workspace_loc", ((IPath)resource[0]).toString()); //$NON-NLS-1$
 		}
 		if (text != null) {
 			workDirectoryField.setText(text);
 		}
 	}

 	protected void handleFileWorkingDirectoryButtonSelected() {
 		DirectoryDialog dialog = new DirectoryDialog(getShell(), SWT.SAVE);
 		dialog.setMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.23")); //$NON-NLS-1$
 		dialog.setFilterPath(workDirectoryField.getText());
 		String text= dialog.open();
 		if (text != null) {
 			workDirectoryField.setText(text);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#getImage()
 	 */
 	public Image getImage() {
 		return ExternalToolsImages.getImage(IExternalToolConstants.IMG_TAB_MAIN);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#deactivated(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
 	 */
 	public void deactivated(ILaunchConfigurationWorkingCopy workingCopy) {
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#activated(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
 	 */
 	public void activated(ILaunchConfigurationWorkingCopy workingCopy) {
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2004 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.ui.externaltools.internal.launchConfigurations;


	import java.io.File;

	import org.eclipse.core.resources.IResource;
	import org.eclipse.core.resources.ResourcesPlugin;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IPath;
	import org.eclipse.core.variables.IStringVariableManager;
	import org.eclipse.core.variables.VariablesPlugin;
	import org.eclipse.debug.core.ILaunchConfiguration;
	import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy;
	import org.eclipse.debug.internal.ui.stringsubstitution.StringVariableSelectionDialog;
	import org.eclipse.debug.ui.AbstractLaunchConfigurationTab;
	import org.eclipse.jface.dialogs.IDialogConstants;
	import org.eclipse.jface.window.Window;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Font;
	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.DirectoryDialog;
	import org.eclipse.swt.widgets.FileDialog;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.ui.dialogs.ContainerSelectionDialog;
	import org.eclipse.ui.dialogs.ResourceSelectionDialog;
	import org.eclipse.ui.externaltools.internal.model.ExternalToolsImages;
	import org.eclipse.ui.externaltools.internal.model.ExternalToolsPlugin;
	import org.eclipse.ui.externaltools.internal.model.IExternalToolConstants;

	public abstract class ExternalToolsMainTab extends AbstractLaunchConfigurationTab {
	public final static String FIRST_EDIT = "editedByExternalToolsMainTab"; //$NON-NLS-1$

	protected Text locationField;
	protected Text workDirectoryField;
	protected Button fileLocationButton;
	protected Button workspaceLocationButton;
	protected Button fileWorkingDirectoryButton;
	protected Button workspaceWorkingDirectoryButton;

	protected Text argumentField;
	protected Button variableButton;

	protected SelectionAdapter selectionAdapter;

	protected boolean fInitializing= false;
	private boolean userEdited= false;

	/**
	* A listener to update for text modification and widget selection.
	*/
	protected class WidgetListener extends SelectionAdapter implements ModifyListener {
	public void modifyText(ModifyEvent e) {
	if (!fInitializing) {
	setDirty(true);
	userEdited= true;
	updateLaunchConfigurationDialog();
	}
	}
	public void widgetSelected(SelectionEvent e) {
	setDirty(true);
	Object source= e.getSource();
	if (source == variableButton) {
	StringVariableSelectionDialog dialog= new StringVariableSelectionDialog(getShell());
	if (dialog.open() == Window.OK) {
	argumentField.insert(dialog.getVariableExpression());
	}
	} else if (source == workspaceLocationButton) {
	handleWorkspaceLocationButtonSelected();
	} else if (source == fileLocationButton) {
	handleLocationButtonSelected();
	} else if (source == workspaceWorkingDirectoryButton) {
	handleWorkspaceWorkingDirectoryButtonSelected();
	} else if (source == fileWorkingDirectoryButton) {
	handleFileWorkingDirectoryButtonSelected();
	}
	}
	}

	protected WidgetListener fListener= new WidgetListener();

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#createControl(org.eclipse.swt.widgets.Composite)
	*/
	public void createControl(Composite parent) {
	Composite mainComposite = new Composite(parent, SWT.NONE);
	setControl(mainComposite);

	GridLayout layout = new GridLayout();
	layout.numColumns = 2;
	GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
	mainComposite.setLayout(layout);
	mainComposite.setLayoutData(gridData);
	mainComposite.setFont(parent.getFont());
	createLocationComponent(mainComposite);
	createWorkDirectoryComponent(mainComposite);
	createArgumentComponent(mainComposite);
	createVerticalSpacer(mainComposite, 2);
	}

	/**
	* Creates the controls needed to edit the location
	* attribute of an external tool
	*
	* @param parent the composite to create the controls in
	*/
	protected void createLocationComponent(Composite parent) {
	Font font = parent.getFont();

	Composite composite = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	layout.numColumns = 1;
	GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
	composite.setLayout(layout);
	composite.setLayoutData(gridData);

	Label label = new Label(composite, SWT.NONE);
	label.setText(getLocationLabel());
	label.setFont(font);

	locationField = new Text(composite, SWT.BORDER);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
	locationField.setLayoutData(data);
	locationField.setFont(font);

	Composite buttonComposite = new Composite(parent, SWT.NONE);
	layout = new GridLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	layout.numColumns = 1;
	gridData = new GridData(GridData.HORIZONTAL_ALIGN_END);
	buttonComposite.setLayout(layout);
	buttonComposite.setLayoutData(gridData);
	buttonComposite.setFont(font);

	createVerticalSpacer(buttonComposite, 1);

	workspaceLocationButton= createPushButton(buttonComposite, ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.&Browse_Workspace..._3"), null); //$NON-NLS-1$
	workspaceLocationButton.addSelectionListener(fListener);
	fileLocationButton= createPushButton(buttonComposite, ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Brows&e_File_System..._4"), null); //$NON-NLS-1$

	fileLocationButton.addSelectionListener(fListener);
	locationField.addModifyListener(fListener);
	}

	protected String getLocationLabel() {
	return ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.&Location___2"); //$NON-NLS-1$
	}

	/**
	* Creates the controls needed to edit the working directory
	* attribute of an external tool
	*
	* @param parent the composite to create the controls in
	*/
	protected void createWorkDirectoryComponent(Composite parent) {
	Font font = parent.getFont();

	Composite composite = new Composite(parent, SWT.NONE);
	GridLayout layout = new GridLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	layout.numColumns = 1;
	GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
	composite.setLayout(layout);
	composite.setLayoutData(gridData);

	Label label = new Label(composite, SWT.NONE);
	label.setText(getWorkingDirectoryLabel());
	label.setFont(font);

	workDirectoryField = new Text(composite, SWT.BORDER);
	GridData data = new GridData(GridData.FILL_HORIZONTAL);
	data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
	workDirectoryField.setLayoutData(data);
	workDirectoryField.setFont(font);

	Composite buttonComposite = new Composite(parent, SWT.NONE);
	layout = new GridLayout();
	layout.marginWidth = 0;
	layout.marginHeight = 0;
	layout.numColumns = 1;
	gridData = new GridData(GridData.HORIZONTAL_ALIGN_END);
	buttonComposite.setLayout(layout);
	buttonComposite.setLayoutData(gridData);
	buttonComposite.setFont(font);

	createVerticalSpacer(buttonComposite, 1);
	workspaceWorkingDirectoryButton= createPushButton(buttonComposite, ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Browse_Wor&kspace..._6"), null); //$NON-NLS-1$
	workspaceWorkingDirectoryButton.addSelectionListener(fListener);
	fileWorkingDirectoryButton= createPushButton(buttonComposite, ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Browse_F&ile_System..._7"), null); //$NON-NLS-1$

	fileWorkingDirectoryButton.addSelectionListener(fListener);
	workDirectoryField.addModifyListener(fListener);
	}
	/**
	* Return the String to use as the label for the working directory field.
	* @return String
	*/
	protected String getWorkingDirectoryLabel() {
	return ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Working_&Directory__5"); //$NON-NLS-1$
	}

	/**
	* Creates the controls needed to edit the argument and
	* prompt for argument attributes of an external tool
	*
	* @param parent the composite to create the controls in
	*/
	protected void createArgumentComponent(Composite parent) {
	Font font = parent.getFont();

	Label label = new Label(parent, SWT.NONE);
	label.setText(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.&Arguments___1")); //$NON-NLS-1$
	GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
	data.horizontalSpan = 2;
	label.setLayoutData(data);
	label.setFont(font);

	argumentField = new Text(parent, SWT.MULTI \| SWT.WRAP \| SWT.BORDER \| SWT.V_SCROLL);
	data = new GridData(GridData.FILL_BOTH);
	data.widthHint = IDialogConstants.ENTRY_FIELD_WIDTH;
	data.heightHint= 40;
	argumentField.setLayoutData(data);
	argumentField.setFont(font);
	argumentField.addModifyListener(fListener);

	variableButton= createPushButton(parent, ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Varia&bles..._2"), null); //$NON-NLS-1$
	GridData gridData = new GridData(GridData.VERTICAL_ALIGN_BEGINNING \| GridData.HORIZONTAL_ALIGN_FILL);
	variableButton.setLayoutData(gridData);
	variableButton.addSelectionListener(fListener);

	Label instruction = new Label(parent, SWT.NONE);
	instruction.setText(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.3")); //$NON-NLS-1$
	data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
	data.horizontalSpan = 2;
	instruction.setLayoutData(data);
	instruction.setFont(font);
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#setDefaults(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
	*/
	public void setDefaults(ILaunchConfigurationWorkingCopy configuration) {
	configuration.setAttribute(FIRST_EDIT, true);
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#initializeFrom(org.eclipse.debug.core.ILaunchConfiguration)
	*/
	public void initializeFrom(ILaunchConfiguration configuration) {
	fInitializing= true;
	updateLocation(configuration);
	updateWorkingDirectory(configuration);
	updateArgument(configuration);
	fInitializing= false;
	setDirty(false);
	}

	protected void updateWorkingDirectory(ILaunchConfiguration configuration) {
	String workingDir= ""; //$NON-NLS-1$
	try {
	workingDir= configuration.getAttribute(IExternalToolConstants.ATTR_WORKING_DIRECTORY, ""); //$NON-NLS-1$
	} catch (CoreException ce) {
	ExternalToolsPlugin.getDefault().log(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Error_reading_configuration_10"), ce); //$NON-NLS-1$
	}
	workDirectoryField.setText(workingDir);
	}

	protected void updateLocation(ILaunchConfiguration configuration) {
	String location= ""; //$NON-NLS-1$
	try {
	location= configuration.getAttribute(IExternalToolConstants.ATTR_LOCATION, ""); //$NON-NLS-1$
	} catch (CoreException ce) {
	ExternalToolsPlugin.getDefault().log(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Error_reading_configuration_10"), ce); //$NON-NLS-1$
	}
	locationField.setText(location);
	}

	protected void updateArgument(ILaunchConfiguration configuration) {
	String arguments= ""; //$NON-NLS-1$
	try {
	arguments= configuration.getAttribute(IExternalToolConstants.ATTR_TOOL_ARGUMENTS, ""); //$NON-NLS-1$
	} catch (CoreException ce) {
	ExternalToolsPlugin.getDefault().log(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Error_reading_configuration_7"), ce); //$NON-NLS-1$
	}
	argumentField.setText(arguments);
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#performApply(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
	*/
	public void performApply(ILaunchConfigurationWorkingCopy configuration) {
	String location= locationField.getText().trim();
	if (location.length() == 0) {
	configuration.setAttribute(IExternalToolConstants.ATTR_LOCATION, (String)null);
	} else {
	configuration.setAttribute(IExternalToolConstants.ATTR_LOCATION, location);
	}

	String workingDirectory= workDirectoryField.getText().trim();
	if (workingDirectory.length() == 0) {
	configuration.setAttribute(IExternalToolConstants.ATTR_WORKING_DIRECTORY, (String)null);
	} else {
	configuration.setAttribute(IExternalToolConstants.ATTR_WORKING_DIRECTORY, workingDirectory);
	}

	String arguments= argumentField.getText().trim();
	if (arguments.length() == 0) {
	configuration.setAttribute(IExternalToolConstants.ATTR_TOOL_ARGUMENTS, (String)null);
	} else {
	configuration.setAttribute(IExternalToolConstants.ATTR_TOOL_ARGUMENTS, arguments);
	}

	if(userEdited) {
	configuration.setAttribute(FIRST_EDIT, (String)null);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#getName()
	*/
	public String getName() {
	return ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.&Main_17"); //$NON-NLS-1$
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#isValid(org.eclipse.debug.core.ILaunchConfiguration)
	*/
	public boolean isValid(ILaunchConfiguration launchConfig) {
	setErrorMessage(null);
	setMessage(null);
	boolean newConfig = false;
	try {
	newConfig = launchConfig.getAttribute(FIRST_EDIT, false);
	} catch (CoreException e) {
	//assume false is correct
	}
	return validateLocation(newConfig) && validateWorkDirectory();
	}

	/**
	* Validates the content of the location field.
	*/
	protected boolean validateLocation(boolean newConfig) {
	String value = locationField.getText().trim();

	if (value.length() < 1) {
	if (newConfig) {
	setErrorMessage(null);
	setMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.30")); //$NON-NLS-1$
	} else {
	setErrorMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.External_tool_location_cannot_be_empty_18")); //$NON-NLS-1$
	setMessage(null);
	}
	return false;
	}

	String location = null;
	try {
	location= getValue(value);
	} catch (CoreException e) {
	setErrorMessage(e.getMessage());
	return false;
	}


	File file = new File(location);
	if (!file.exists()) { // The file does not exist.
	if (!newConfig) {
	setErrorMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.External_tool_location_does_not_exist_19")); //$NON-NLS-1$
	}
	return false;
	}
	if (!file.isFile()) {
	if (!newConfig) {
	setErrorMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.External_tool_location_specified_is_not_a_file_20")); //$NON-NLS-1$

	}
	return false;
	}
	return true;
	}



	/**
	* Returns the value of the given string with all variables substituted (if any).
	*
	* @param expression expression with variables
	* @return resolved value of expression
	* @exception CoreException if variable substitution fails
	*/
	private String getValue(String expression) throws CoreException {
	IStringVariableManager manager = VariablesPlugin.getDefault().getStringVariableManager();
	return manager.performStringSubstitution(expression);
	}

	/**
	* Validates the content of the working directory field.
	*/
	protected boolean validateWorkDirectory() {

	String value = workDirectoryField.getText().trim();
	if (value.length() <= 0) {
	return true;
	}

	String dir = null;
	try {
	dir= getValue(value);
	} catch (CoreException e) {
	setErrorMessage(e.getMessage());
	return false;
	}

	File file = new File(dir);
	if (!file.exists()) { // The directory does not exist.
	setErrorMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.External_tool_working_directory_does_not_exist_or_is_invalid_21")); //$NON-NLS-1$
	return false;
	}
	if (!file.isDirectory()) {
	setErrorMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Not_a_directory")); //$NON-NLS-1$
	return false;
	}
	return true;
	}

	protected void handleLocationButtonSelected() {
	FileDialog fileDialog = new FileDialog(getShell(), SWT.NONE);
	fileDialog.setFileName(locationField.getText());
	String text= fileDialog.open();
	if (text != null) {
	locationField.setText(text);
	}
	}

	/**
	* Prompts the user for a workspace location within the workspace and sets
	* the location as a String containing the workspace_loc variable or
	* <code>null</code> if no location was obtained from the user.
	*/
	protected void handleWorkspaceLocationButtonSelected() {
	ResourceSelectionDialog dialog;
	dialog = new ResourceSelectionDialog(getShell(), ResourcesPlugin.getWorkspace().getRoot(), ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.Select_a_resource_22")); //$NON-NLS-1$
	dialog.open();
	Object[] results = dialog.getResult();
	if (results == null \|\| results.length < 1) {
	return;
	}
	IResource resource = (IResource)results[0];
	locationField.setText(newVariableExpression("workspace_loc", resource.getFullPath().toString())); //$NON-NLS-1$
	}

	protected String newVariableExpression(String varName, String arg) {
	return VariablesPlugin.getDefault().getStringVariableManager().generateVariableExpression(varName, arg);
	}

	/**
	* Prompts the user for a working directory location within the workspace
	* and sets the working directory as a String containing the workspace_loc
	* variable or <code>null</code> if no location was obtained from the user.
	*/
	protected void handleWorkspaceWorkingDirectoryButtonSelected() {
	ContainerSelectionDialog containerDialog;
	containerDialog = new ContainerSelectionDialog(
	getShell(),
	ResourcesPlugin.getWorkspace().getRoot(),
	false,
	ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.23")); //$NON-NLS-1$
	containerDialog.open();
	Object[] resource = containerDialog.getResult();
	String text= null;
	if (resource != null && resource.length > 0) {
	text= newVariableExpression("workspace_loc", ((IPath)resource[0]).toString()); //$NON-NLS-1$
	}
	if (text != null) {
	workDirectoryField.setText(text);
	}
	}

	protected void handleFileWorkingDirectoryButtonSelected() {
	DirectoryDialog dialog = new DirectoryDialog(getShell(), SWT.SAVE);
	dialog.setMessage(ExternalToolsLaunchConfigurationMessages.getString("ExternalToolsMainTab.23")); //$NON-NLS-1$
	dialog.setFilterPath(workDirectoryField.getText());
	String text= dialog.open();
	if (text != null) {
	workDirectoryField.setText(text);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#getImage()
	*/
	public Image getImage() {
	return ExternalToolsImages.getImage(IExternalToolConstants.IMG_TAB_MAIN);
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#deactivated(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
	*/
	public void deactivated(ILaunchConfigurationWorkingCopy workingCopy) {
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.ILaunchConfigurationTab#activated(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy)
	*/
	public void activated(ILaunchConfigurationWorkingCopy workingCopy) {
	}
	}