/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

include("../implLibrary.js")

function StatusPaneContextAppIcon() {

}

// IComponentValidator

StatusPaneContextAppIcon.prototype.validate = function(instance) {

	var str = checkImageProperty(instance, instance.properties.image);

	if (str)

		return [ createSimpleModelError(instance, "image", str, []) ];

	else

		return null;

}

StatusPaneContextAppIcon.prototype.queryPropertyChange = function(instance, propertyId, newValue) {

	if (propertyId == "image") {

		var str = checkImageProperty(instance, newValue);

		return str;	

	} else {

		return null;

	}

}

/**

 *	The app icon is a strange beast since it is specified only by file,

 * 	not by file and image.  S60 picks images from fixed indices in the file.

 *	When MBM files are used, the app/grid icon is a different size than the

 *	context icon, so two images are candidates, and the second one (if existing)

 *	is seen in the context icon.  When MIF files are used, the icon can be

 *	scaled for either position, so only the first image is used.

 *

 *	Note: this validation and this component do not get across the point

 *	that the app/grid icon may be different, so the user needs to find this

 *	out from experience.

 */

function checkImageProperty(instance, imageProperty) {

	var imageInfo = imageProperty.editableValue;

	if (imageInfo != null && imageInfo.multiImageInfo != null) {

		var theImage;

		if (imageInfo.bitmapInfo == null)

			return lookupString("MustBeMaskedImage");

		// get the first and second image from this file

		var firstImage = imageInfo.multiImageInfo.getImageAtIndex(0);

		var secondImage = imageInfo.multiImageInfo.getImageAtIndex(2); // step by 2 (bmp, mask)

		if (imageInfo.multiImageInfo.getFileType() == imageInfo.multiImageInfo.MBM_FILE) {

			// for mbms, the first image becomes the app/grid icon and the second is the context icon

			theImage = secondImage;

			if (secondImage == null)

				theImage = firstImage;

			if (imageInfo.bitmapInfo != theImage)

				return lookupString("MustBeFirstOrSecondBmp");

		} else {

			// for mifs, the first image is used in both the app/grid and the context icon

			theImage = firstImage;

			if (imageInfo.bitmapInfo != theImage)

				return lookupString("MustBeFirstSvg");

		}

		// verify image has a mask, else we won't get any image

		if (!imageInfo.bitmapInfo.isSVG() && imageInfo.maskInfo == null)

			return lookupString("MustBeMaskedImage");

	}

	return null;

}