/*******************************************************************************
 * Copyright (c) 2000, 2005 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.ui.externaltools.internal.program.launchConfigurations;


import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.externaltools.internal.launchConfigurations.ExternalToolsMainTab;
import org.eclipse.ui.externaltools.internal.model.IExternalToolsHelpContextIds;
import org.eclipse.ui.externaltools.internal.ui.FileSelectionDialog;

public class ProgramMainTab extends ExternalToolsMainTab {

	/**
	 * Prompts the user for a program 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() {
		FileSelectionDialog dialog;
		dialog = new FileSelectionDialog(getShell(), ResourcesPlugin.getWorkspace().getRoot(), ExternalToolsProgramMessages.ProgramMainTab_Select); //$NON-NLS-1$
		dialog.open();
		IStructuredSelection result = dialog.getResult();
		if (result == null) {
			return;
		}
		Object file= result.getFirstElement();
		if (file instanceof IFile) {
			StringBuffer expression = new StringBuffer();
			expression.append("${workspace_loc:"); //$NON-NLS-1$
			expression.append(((IFile)file).getFullPath().toString());
			expression.append("}"); //$NON-NLS-1$
			locationField.setText(expression.toString());
		}
	}
	
	
   	/* (non-Javadoc)
	 * @see org.eclipse.debug.ui.ILaunchConfigurationTab#createControl(org.eclipse.swt.widgets.Composite)
	 */
	public void createControl(Composite parent) {
		super.createControl(parent);
		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IExternalToolsHelpContextIds.EXTERNAL_TOOLS_LAUNCH_CONFIGURATION_DIALOG_PROGRAM_MAIN_TAB);
	}
}