// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

package com.symbian.smt.gui.smtwidgets.resources;

import java.util.HashMap;

import java.util.List;

import org.eclipse.jface.dialogs.Dialog;

import org.eclipse.jface.viewers.ISelectionProvider;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.jface.viewers.ListViewer;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Shell;

import org.eclipse.ui.PlatformUI;

import com.symbian.smt.gui.ResourcesEnums;

import com.symbian.smt.gui.smtwidgets.AbstractMultipleEntriesWidgetAction;

import com.symbian.smt.gui.smtwidgets.XmlFileSelectionDialog;

/**

 * This is the action that adds a new command line option to the list of

 * assigned options.

 * 

 * @author barbararosi-schwartz

 * 

 */

class AddResourceFileAction extends AbstractMultipleEntriesWidgetAction {

	private HashMap<ResourcesEnums, List<CheckableResourceFilename>> resourceFilesMap;

	/**

	 * The option that has been entered by the user or null if the user

	 * cancelled the operation.

	 */

	private String newFileLocation = null;

	AddResourceFileAction(

			Button button,

			ISelectionProvider filesViewer,

			HashMap<ResourcesEnums, List<CheckableResourceFilename>> resourceFilesMap,

			ListViewer resourceTypesViewer) {

		super(resourceTypesViewer, "Add...", button);

		this.resourceFilesMap = resourceFilesMap;

		setEnabled(false);

	}

	/**

	 * Returns the option that was entered by the user.

	 * 

	 * @return the option that was entered by the user (or null if the user

	 *         cancelled the operation)

	 */

	String getNewFileLocation() {

		return newFileLocation;

	}

	/**

	 * Creates and displays an InputDialogWithWarning that collects the new

	 * option entered by the user. The dialog is equipped with a

	 * DialogInputValidator object that automatically performs validation on the

	 * user's input.

	 * <p>

	 * When the dialog is dismissed, the action changes the model to reflect the

	 * new addition.

	 * </p>

	 */

	@Override

	public void run() {

		Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow()

				.getShell();

		String dialogTitle = "New Resource File";

		String dialogMessage = "Enter the path or URL to the resource file";

		String initialPath = "";

		String[] filterNames = { "*.xml" };

		ResourcesEnums selectedResourceType = ResourcesWidgetHelper

				.getSelectedResourceType((ListViewer) selectionProvider);

		List<CheckableResourceFilename> checkableFilenames = ResourcesWidgetHelper

				.getCheckableResourceFilenames(selectedResourceType,

						resourceFilesMap);

		ResourceFileSelectionValidator validator = new ResourceFileSelectionValidator(

				selectedResourceType, checkableFilenames);

		XmlFileSelectionDialog dialog = new XmlFileSelectionDialog(shell,

				dialogTitle, dialogMessage, initialPath, filterNames, validator);

		dialog.open();

		if (dialog.getReturnCode() == Dialog.CANCEL) {

			newFileLocation = null;

			return;

		}

		newFileLocation = dialog.getValue();

		// Adding the newly added file to the resource files

		// map.

		// Automatic checking of the related checkbox and

		// addition

		// to the selected resource files map is handled by the

		// <code>handleMultipleCheckRules()</code> method in the ResourcesWidget

		// class,

		// which is also used for user checks/unchecks.

		if (newFileLocation.length() != 0) {

			checkableFilenames.add(new CheckableResourceFilename(

					newFileLocation));

		}

	}

	/**

	 * This action is enabled if a resource type has been selected by the user.

	 */

	@Override

	public void selectionChanged(IStructuredSelection selection) {

		ResourcesEnums selectedResourceType = ResourcesWidgetHelper

				.getSelectedResourceType((ListViewer) selectionProvider);

		if (selectedResourceType == null) {

			setEnabled(false);

		} else {

			setEnabled(true);

		}

	}

}