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/*!
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* jQuery UI Mouse 1.8.6
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*
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* Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
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* Dual licensed under the MIT or GPL Version 2 licenses.
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* http://jquery.org/license
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*
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* http://docs.jquery.com/UI/Mouse
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*
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* Depends:
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* jquery.ui.widget.js
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*/
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(function( $, undefined ) {
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$.widget("ui.mouse", {
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options: {
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cancel: ':input,option',
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distance: 1,
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delay: 0
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},
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_mouseInit: function() {
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var self = this;
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this.element
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.bind('mousedown.'+this.widgetName, function(event) {
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return self._mouseDown(event);
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})
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.bind('click.'+this.widgetName, function(event) {
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if(self._preventClickEvent) {
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self._preventClickEvent = false;
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event.stopImmediatePropagation();
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return false;
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}
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});
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this.started = false;
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},
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// TODO: make sure destroying one instance of mouse doesn't mess with
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// other instances of mouse
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_mouseDestroy: function() {
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this.element.unbind('.'+this.widgetName);
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},
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_mouseDown: function(event) {
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// don't let more than one widget handle mouseStart
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// TODO: figure out why we have to use originalEvent
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event.originalEvent = event.originalEvent || {};
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if (event.originalEvent.mouseHandled) { return; }
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// we may have missed mouseup (out of window)
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(this._mouseStarted && this._mouseUp(event));
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this._mouseDownEvent = event;
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var self = this,
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btnIsLeft = (event.which == 1),
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elIsCancel = (typeof this.options.cancel == "string" ? $(event.target).parents().add(event.target).filter(this.options.cancel).length : false);
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if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
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return true;
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}
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this.mouseDelayMet = !this.options.delay;
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if (!this.mouseDelayMet) {
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this._mouseDelayTimer = setTimeout(function() {
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self.mouseDelayMet = true;
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}, this.options.delay);
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}
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if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
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this._mouseStarted = (this._mouseStart(event) !== false);
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if (!this._mouseStarted) {
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event.preventDefault();
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return true;
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}
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}
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// these delegates are required to keep context
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this._mouseMoveDelegate = function(event) {
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return self._mouseMove(event);
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};
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this._mouseUpDelegate = function(event) {
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return self._mouseUp(event);
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};
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$(document)
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.bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
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.bind('mouseup.'+this.widgetName, this._mouseUpDelegate);
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event.preventDefault();
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event.originalEvent.mouseHandled = true;
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return true;
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},
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_mouseMove: function(event) {
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// IE mouseup check - mouseup happened when mouse was out of window
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if ($.browser.msie && !(document.documentMode >= 9) && !event.button) {
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return this._mouseUp(event);
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}
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if (this._mouseStarted) {
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this._mouseDrag(event);
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return event.preventDefault();
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}
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if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
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this._mouseStarted =
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(this._mouseStart(this._mouseDownEvent, event) !== false);
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(this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
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}
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return !this._mouseStarted;
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},
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_mouseUp: function(event) {
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$(document)
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.unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
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.unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);
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if (this._mouseStarted) {
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this._mouseStarted = false;
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this._preventClickEvent = (event.target == this._mouseDownEvent.target);
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this._mouseStop(event);
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}
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return false;
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},
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_mouseDistanceMet: function(event) {
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return (Math.max(
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Math.abs(this._mouseDownEvent.pageX - event.pageX),
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Math.abs(this._mouseDownEvent.pageY - event.pageY)
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) >= this.options.distance
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);
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},
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_mouseDelayMet: function(event) {
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return this.mouseDelayMet;
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},
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// These are placeholder methods, to be overriden by extending plugin
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_mouseStart: function(event) {},
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_mouseDrag: function(event) {},
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_mouseStop: function(event) {},
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_mouseCapture: function(event) { return true; }
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});
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})(jQuery);
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