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Diffstat (limited to 'libs/bower_components/jqueryui-touch-punch/jquery.ui.touch-punch.js')
| -rw-r--r-- | libs/bower_components/jqueryui-touch-punch/jquery.ui.touch-punch.js | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/libs/bower_components/jqueryui-touch-punch/jquery.ui.touch-punch.js b/libs/bower_components/jqueryui-touch-punch/jquery.ui.touch-punch.js new file mode 100644 index 0000000000..16ce41d1ed --- /dev/null +++ b/libs/bower_components/jqueryui-touch-punch/jquery.ui.touch-punch.js @@ -0,0 +1,180 @@ +/*! + * jQuery UI Touch Punch 0.2.3 + * + * Copyright 2011–2014, Dave Furfero + * Dual licensed under the MIT or GPL Version 2 licenses. + * + * Depends: + * jquery.ui.widget.js + * jquery.ui.mouse.js + */ +(function ($) { + + // Detect touch support + $.support.touch = 'ontouchend' in document; + + // Ignore browsers without touch support + if (!$.support.touch) { + return; + } + + var mouseProto = $.ui.mouse.prototype, + _mouseInit = mouseProto._mouseInit, + _mouseDestroy = mouseProto._mouseDestroy, + touchHandled; + + /** + * Simulate a mouse event based on a corresponding touch event + * @param {Object} event A touch event + * @param {String} simulatedType The corresponding mouse event + */ + function simulateMouseEvent (event, simulatedType) { + + // Ignore multi-touch events + if (event.originalEvent.touches.length > 1) { + return; + } + + event.preventDefault(); + + var touch = event.originalEvent.changedTouches[0], + simulatedEvent = document.createEvent('MouseEvents'); + + // Initialize the simulated mouse event using the touch event's coordinates + simulatedEvent.initMouseEvent( + simulatedType, // type + true, // bubbles + true, // cancelable + window, // view + 1, // detail + touch.screenX, // screenX + touch.screenY, // screenY + touch.clientX, // clientX + touch.clientY, // clientY + false, // ctrlKey + false, // altKey + false, // shiftKey + false, // metaKey + 0, // button + null // relatedTarget + ); + + // Dispatch the simulated event to the target element + event.target.dispatchEvent(simulatedEvent); + } + + /** + * Handle the jQuery UI widget's touchstart events + * @param {Object} event The widget element's touchstart event + */ + mouseProto._touchStart = function (event) { + + var self = this; + + // Ignore the event if another widget is already being handled + if (touchHandled || !self._mouseCapture(event.originalEvent.changedTouches[0])) { + return; + } + + // Set the flag to prevent other widgets from inheriting the touch event + touchHandled = true; + + // Track movement to determine if interaction was a click + self._touchMoved = false; + + // Simulate the mouseover event + simulateMouseEvent(event, 'mouseover'); + + // Simulate the mousemove event + simulateMouseEvent(event, 'mousemove'); + + // Simulate the mousedown event + simulateMouseEvent(event, 'mousedown'); + }; + + /** + * Handle the jQuery UI widget's touchmove events + * @param {Object} event The document's touchmove event + */ + mouseProto._touchMove = function (event) { + + // Ignore event if not handled + if (!touchHandled) { + return; + } + + // Interaction was not a click + this._touchMoved = true; + + // Simulate the mousemove event + simulateMouseEvent(event, 'mousemove'); + }; + + /** + * Handle the jQuery UI widget's touchend events + * @param {Object} event The document's touchend event + */ + mouseProto._touchEnd = function (event) { + + // Ignore event if not handled + if (!touchHandled) { + return; + } + + // Simulate the mouseup event + simulateMouseEvent(event, 'mouseup'); + + // Simulate the mouseout event + simulateMouseEvent(event, 'mouseout'); + + // If the touch interaction did not move, it should trigger a click + if (!this._touchMoved) { + + // Simulate the click event + simulateMouseEvent(event, 'click'); + } + + // Unset the flag to allow other widgets to inherit the touch event + touchHandled = false; + }; + + /** + * A duck punch of the $.ui.mouse _mouseInit method to support touch events. + * This method extends the widget with bound touch event handlers that + * translate touch events to mouse events and pass them to the widget's + * original mouse event handling methods. + */ + mouseProto._mouseInit = function () { + + var self = this; + + // Delegate the touch handlers to the widget's element + self.element.bind({ + touchstart: $.proxy(self, '_touchStart'), + touchmove: $.proxy(self, '_touchMove'), + touchend: $.proxy(self, '_touchEnd') + }); + + // Call the original $.ui.mouse init method + _mouseInit.call(self); + }; + + /** + * Remove the touch event handlers + */ + mouseProto._mouseDestroy = function () { + + var self = this; + + // Delegate the touch handlers to the widget's element + self.element.unbind({ + touchstart: $.proxy(self, '_touchStart'), + touchmove: $.proxy(self, '_touchMove'), + touchend: $.proxy(self, '_touchEnd') + }); + + // Call the original $.ui.mouse destroy method + _mouseDestroy.call(self); + }; + +})(jQuery);
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