// 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:

// ResourcesWidgetHelper

//

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

import java.util.ArrayList;

import java.util.HashMap;

import java.util.Iterator;

import org.eclipse.jface.viewers.ListViewer;

import org.eclipse.jface.viewers.StructuredSelection;

import com.symbian.smt.gui.Helper;

import com.symbian.smt.gui.ResourcesEnums;

/**

 * @author barbararosi-schwartz

 * 

 */

public class ResourcesWidgetHelper {

	static boolean contains(

			java.util.List<CheckableResourceFilename> checkableFilenames,

			String filename) {

		if (checkableFilenames == null || filename == null) {

			throw new IllegalArgumentException("Arguments cannot be null.");

		}

		java.util.List<String> filenames = new ArrayList<String>();

		for (CheckableResourceFilename checkableFilename : checkableFilenames) {

			filenames.add(checkableFilename.getFilename());

		}

		return filenames.contains(filename);

	}

	static CheckableResourceFilename filename2checkableFilename(

			String name,

			ResourcesEnums resourceType,

			HashMap<ResourcesEnums, java.util.List<CheckableResourceFilename>> resourceFilesMap) {

		java.util.List<CheckableResourceFilename> checkableFilenames = resourceFilesMap

				.get(resourceType);

		if (checkableFilenames == null) {

			throw new IllegalArgumentException(

					"Could not find any elements of type [" + resourceType

							+ "] in resourceFilesMap.");

		}

		CheckableResourceFilename checkableFilename = null;

		Iterator<CheckableResourceFilename> iter = checkableFilenames

				.iterator();

		while (iter.hasNext()) {

			CheckableResourceFilename crf = iter.next();

			if (crf.getFilename().equals(name)) {

				checkableFilename = crf;

				break;

			}

		}

		if (checkableFilename == null) {

			throw new IllegalArgumentException(

					"Could not find any file with name [" + name

							+ "] in resourceFilesMap.");

		}

		return checkableFilename;

	}

	static java.util.List<CheckableResourceFilename> getCheckableResourceFilenames(

			ResourcesEnums resourceType,

			HashMap<ResourcesEnums, java.util.List<CheckableResourceFilename>> resourceFilesMap) {

		return resourceFilesMap.get(resourceType);

	}

	static String[] getCheckedFilenames(

			ResourcesEnums resourceType,

			HashMap<ResourcesEnums, java.util.List<CheckableResourceFilename>> resourceFilesMap) {

		java.util.List<CheckableResourceFilename> checkableFilenames = getCheckableResourceFilenames(

				resourceType, resourceFilesMap);

		java.util.List<String> checkedNames = new ArrayList<String>();

		for (CheckableResourceFilename checkableFilename : checkableFilenames) {

			if (checkableFilename.isChecked()) {

				checkedNames.add(checkableFilename.getFilename());

			}

		}

		return Helper.toArrayOfStrings(checkedNames);

	}

	static CheckableResourceFilename[] getCheckedResourceFilenames(

			ResourcesEnums resourceType,

			HashMap<ResourcesEnums, java.util.List<CheckableResourceFilename>> resourceFilesMap) {

		java.util.List<CheckableResourceFilename> checkableFilenames = getCheckableResourceFilenames(

				resourceType, resourceFilesMap);

		java.util.List<CheckableResourceFilename> checkedResourceFilenames = new ArrayList<CheckableResourceFilename>();

		for (CheckableResourceFilename checkableFilename : checkableFilenames) {

			if (checkableFilename.isChecked()) {

				checkedResourceFilenames.add(checkableFilename);

			}

		}

		return toArrayOfCheckableResourceFilenames(checkedResourceFilenames);

	}

	static String[] getFilenames(

			ResourcesEnums resourceType,

			HashMap<ResourcesEnums, java.util.List<CheckableResourceFilename>> resourceFilesMap) {

		java.util.List<CheckableResourceFilename> checkableFilenames = resourceFilesMap

				.get(resourceType);

		String[] filenames = new String[checkableFilenames.size()];

		int i = 0;

		for (CheckableResourceFilename checkableFilename : checkableFilenames) {

			filenames[i] = checkableFilename.getFilename();

			i++;

		}

		return filenames;

	}

	static ResourcesEnums getSelectedResourceType(ListViewer resourceTypesViewer) {

		return (ResourcesEnums) ((StructuredSelection) resourceTypesViewer

				.getSelection()).getFirstElement();

	}

	/**

	 * Converts the List of CheckableResourceFilename objects into a

	 * CheckableResourceFilename array. The opposite conversion is also provided

	 * by this class with method

	 * toListofCheckableResourceFilenames(CheckableResourceFilename []).

	 * 

	 * @param list

	 *            the java.util.List of CheckableResourceFilename objects to be

	 *            converted (may be empty but cannot be null)

	 * @return the corresponding CheckableResourceFilename array or an empty

	 *         array if list is empty.

	 * @see #toListofCheckableResourceFilenames(CheckableResourceFilename [])

	 */

	static final CheckableResourceFilename[] toArrayOfCheckableResourceFilenames(

			java.util.List<CheckableResourceFilename> list) {

		if (list == null) {

			throw new IllegalArgumentException("Parameter list cannot be null.");

		}

		CheckableResourceFilename[] array = new CheckableResourceFilename[list

				.size()];

		return list.toArray(array);

	}

}