/*
 * @copyright Copyright (c) 2016 Julius Härtl <jus@bitgrid.net>
 *
 * @author Julius Härtl <jus@bitgrid.net>
 *
 * @license GNU AGPL version 3 or any later version
 *  
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
 *  
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Affero General Public License for more details.
 *  
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *  
 */

// original idea from blockloop: http://stackoverflow.com/a/24090733
app.directive('elastic', [
	'$timeout',
	function($timeout) {
		return {
			restrict: 'A',
			link: function($scope, element) {
				$scope.initialHeight = $scope.initialHeight || element[0].style.height;
				var resize = function() {
					element[0].style.height = $scope.initialHeight;
					element[0].style.height = "" + element[0].scrollHeight + "px";
				};
				element.on("input change", resize);
				$timeout(resize, 0);
			}
		};
	}
]);