/**
 * ImageSize.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2016 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

define("tinymce/imagetoolsplugin/ImageSize", [
], function() {
	function getImageSize(img) {
		var width, height;

		function isPxValue(value) {
			return /^[0-9\.]+px$/.test(value);
		}

		width = img.style.width;
		height = img.style.height;
		if (width || height) {
			if (isPxValue(width) && isPxValue(height)) {
				return {
					w: parseInt(width, 10),
					h: parseInt(height, 10)
				};
			}

			return null;
		}

		width = img.width;
		height = img.height;

		if (width && height) {
			return {
				w: parseInt(width, 10),
				h: parseInt(height, 10)
			};
		}

		return null;
	}

	function setImageSize(img, size) {
		var width, height;

		if (size) {
			width = img.style.width;
			height = img.style.height;

			if (width || height) {
				img.style.width = size.w + 'px';
				img.style.height = size.h + 'px';
				img.removeAttribute('data-mce-style');
			}

			width = img.width;
			height = img.height;

			if (width || height) {
				img.setAttribute('width', size.w);
				img.setAttribute('height', size.h);
			}
		}
	}

	function getNaturalImageSize(img) {
		return {
			w: img.naturalWidth,
			h: img.naturalHeight
		};
	}

	return {
		getImageSize: getImageSize,
		setImageSize: setImageSize,
		getNaturalImageSize: getNaturalImageSize
	};
});