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home/lmsyaran/public_html/media/com_easyblog/scripts_/responsive.js000064400000012451151156361170021740
0ustar00EasyBlog.module('responsive', function($) {
	var module = this;

	// $(selector).responsive({condition});
	// $(selector).responsive([{condition1}, {condition2}]);
	$.fn.responsive = function() {
		var node = this;

		/* conditions = {
			at: 0, // threshold value
			switchTo: '', // classname to apply to the node
			alsoSwitch: {
				'selector': 'class'
			}
			switchStylesheet: '',
			targetFunction: '',
			reverseFunction: ''
		} */

		var options = {
			elementWidth: function() {
				return $(node).outerWidth(true);
			},
			conditions: $.makeArray(arguments)
		};

		$.responsive.process.call(node, options);
	};

	/*
	$.responsive({
		elementWidth: function() {} // width calculation of the target element
	}, {
		condition1
	});

	$.responsive({
		elementWidth: function() {} // width calculation of the target element
	}, [{
		condition1
	}, {
		condition2
	}]);
	*/
	$.responsive = function(elem, options) {
		// make sure that single condition object gets convert into array any how
		options.conditions = $.makeArray(options.conditions);

		/*var defaultOptions = {
			// main element width to calculate
			elementWidth: function() {}, // a function that returns pixel value

			// array of conditions of ascending thresholdWidth
			conditions: [{

				// threshold for this condition
				at: 0,

				// condition specific options
				switchTo: '',
				alsoSwitch: {}, //  objects with element and class
				switchStylesheet: '',
				targetFunction: '', // function to run
				reverseFunction: '' // reverse function that reverses any
action in target function
			}]
		}*/

		$.responsive.process.call($(elem), options);
	};

	$.responsive.process = function(options) {
		var node = this;
		var totalConditions = options.conditions.length;

		$(window).resize(function() {
			$.responsive.sortConditions(options);

			var elementWidth;

			// calculate element width
			if ($.isFunction(options.elementWidth)) {
				elementWidth = options.elementWidth();
			} else {
				elementWidth = options.elementWidth;
			}

			// loop through each condition
			$.each(options.conditions, function(i, condition) {
				var conditionOptions = $.responsive.properConditions(condition);

				var thresholdWidth = condition.at;

				// calculate threshold width
				if ($.isFunction(condition.at)) {
					thresholdWidth = condition.at();
				} else {
					thresholdWidth = condition.at;
				}

				// perform resize if element <= threshold
				if (elementWidth <= thresholdWidth) {

					// remove all other condition first
					$.responsive.resetToDefault.call(node, options.conditions, i);

					// apply current condition
					$.responsive.resize.call(node, conditionOptions);
					return false;
				} else {
					$.responsive.deresize.call(node, conditionOptions);
				}
			});

		}).resize();
	};

	$.responsive.resize = function(condition) {
		var node = this;

		if (condition.switchTo) {
			$.each(condition.switchTo, function(i, classname) {
				node.addClass(classname);
			});
		}

		if (condition.alsoSwitch) {
			$.each(condition.alsoSwitch, function(selector, classname) {
				$(selector).addClass(classname);
			});
		}

		if (condition.targetFunction) {
			condition.targetFunction();
		}

		if (condition.switchStylesheet) {
			$.each(condition.switchStylesheet, function(i, stylesheet) {
				var tmp = $('link[href$="' + stylesheet +
'"]');
				if (tmp.length < 1) {
					$('<link/>', {
						rel: 'stylesheet',
						type: 'text/css',
						href: stylesheet
					}).appendTo('head');
				}
			});
		}
	};

	$.responsive.deresize = function(condition) {
		var node = this;

		if (condition.switchTo) {
			$.each(condition.switchTo, function(i, classname) {
				node.removeClass(classname);
			});
		}

		if (condition.alsoSwitch) {
			$.each(condition.alsoSwitch, function(selector, classname) {
				$(selector).removeClass(classname);
			});
		}

		if (condition.reverseFunction) {
			condition.reverseFunction();
		}

		if (condition.switchStylesheet) {
			$.each(condition.switchStylesheet, function(i, stylesheet) {
				$('link[href$="' + stylesheet +
'"]').remove();
			});
		}
	};

	$.responsive.resetToDefault = function(options, current) {
		var node = this;
		$.each(options, function(i, condition) {
			if (current && i == current) {
				return true;
			} else {
				$.responsive.deresize.call(node, condition);
			}
		});
	};

	$.responsive.properConditions = function(condition) {
		var conditionOptions = {
			at: condition.at,
			alsoSwitch: condition.alsoSwitch,
			switchTo: $.makeArray(condition.switchTo),
			switchStylesheet: $.makeArray(condition.switchStylesheet),
			targetFunction: condition.targetFunction,
			reverseFunction: condition.reverseFunction
		};

		return conditionOptions;
	};

	$.responsive.sortConditions = function(options) {
		var totalConditions = options.conditions.length;

		for (var i = 0; i < totalConditions; i++) {
			for (var j = i + 1; j < totalConditions; j++) {
				var a, b;

				if ($.isFunction(options.conditions[i].at)) {
					a = options.conditions[i].at();
				} else {
					a = options.conditions[i].at;
				}

				if ($.isFunction(options.conditions[j].at)) {
					b = options.conditions[j].at();
				} else {
					b = options.conditions[j].at;
				}

				if (a > b) {
					var tmp = options.conditions[i];
					options.conditions[i] = options.conditions[j];
					options.conditions[j] = tmp;
				}
			}
		}
	};

	module.resolve();
});