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comparison jquery-ui/development-bundle/ui/jquery.ui.mouse.js @ 0:b2e4605f20b2

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beta version
author dwinter
date Thu, 30 Jun 2011 09:07:49 +0200
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-1:000000000000 0:b2e4605f20b2
1 /*!
2 * jQuery UI Mouse 1.8.11
3 *
4 * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
5 * Dual licensed under the MIT or GPL Version 2 licenses.
6 * http://jquery.org/license
7 *
8 * http://docs.jquery.com/UI/Mouse
9 *
10 * Depends:
11 * jquery.ui.widget.js
12 */
13 (function( $, undefined ) {
14
15 $.widget("ui.mouse", {
16 options: {
17 cancel: ':input,option',
18 distance: 1,
19 delay: 0
20 },
21 _mouseInit: function() {
22 var self = this;
23
24 this.element
25 .bind('mousedown.'+this.widgetName, function(event) {
26 return self._mouseDown(event);
27 })
28 .bind('click.'+this.widgetName, function(event) {
29 if (true === $.data(event.target, self.widgetName + '.preventClickEvent')) {
30 $.removeData(event.target, self.widgetName + '.preventClickEvent');
31 event.stopImmediatePropagation();
32 return false;
33 }
34 });
35
36 this.started = false;
37 },
38
39 // TODO: make sure destroying one instance of mouse doesn't mess with
40 // other instances of mouse
41 _mouseDestroy: function() {
42 this.element.unbind('.'+this.widgetName);
43 },
44
45 _mouseDown: function(event) {
46 // don't let more than one widget handle mouseStart
47 // TODO: figure out why we have to use originalEvent
48 event.originalEvent = event.originalEvent || {};
49 if (event.originalEvent.mouseHandled) { return; }
50
51 // we may have missed mouseup (out of window)
52 (this._mouseStarted && this._mouseUp(event));
53
54 this._mouseDownEvent = event;
55
56 var self = this,
57 btnIsLeft = (event.which == 1),
58 elIsCancel = (typeof this.options.cancel == "string" ? $(event.target).parents().add(event.target).filter(this.options.cancel).length : false);
59 if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
60 return true;
61 }
62
63 this.mouseDelayMet = !this.options.delay;
64 if (!this.mouseDelayMet) {
65 this._mouseDelayTimer = setTimeout(function() {
66 self.mouseDelayMet = true;
67 }, this.options.delay);
68 }
69
70 if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
71 this._mouseStarted = (this._mouseStart(event) !== false);
72 if (!this._mouseStarted) {
73 event.preventDefault();
74 return true;
75 }
76 }
77
78 // Click event may never have fired (Gecko & Opera)
79 if (true === $.data(event.target, this.widgetName + '.preventClickEvent')) {
80 $.removeData(event.target, this.widgetName + '.preventClickEvent');
81 }
82
83 // these delegates are required to keep context
84 this._mouseMoveDelegate = function(event) {
85 return self._mouseMove(event);
86 };
87 this._mouseUpDelegate = function(event) {
88 return self._mouseUp(event);
89 };
90 $(document)
91 .bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
92 .bind('mouseup.'+this.widgetName, this._mouseUpDelegate);
93
94 event.preventDefault();
95 event.originalEvent.mouseHandled = true;
96 return true;
97 },
98
99 _mouseMove: function(event) {
100 // IE mouseup check - mouseup happened when mouse was out of window
101 if ($.browser.msie && !(document.documentMode >= 9) && !event.button) {
102 return this._mouseUp(event);
103 }
104
105 if (this._mouseStarted) {
106 this._mouseDrag(event);
107 return event.preventDefault();
108 }
109
110 if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
111 this._mouseStarted =
112 (this._mouseStart(this._mouseDownEvent, event) !== false);
113 (this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
114 }
115
116 return !this._mouseStarted;
117 },
118
119 _mouseUp: function(event) {
120 $(document)
121 .unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
122 .unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);
123
124 if (this._mouseStarted) {
125 this._mouseStarted = false;
126
127 if (event.target == this._mouseDownEvent.target) {
128 $.data(event.target, this.widgetName + '.preventClickEvent', true);
129 }
130
131 this._mouseStop(event);
132 }
133
134 return false;
135 },
136
137 _mouseDistanceMet: function(event) {
138 return (Math.max(
139 Math.abs(this._mouseDownEvent.pageX - event.pageX),
140 Math.abs(this._mouseDownEvent.pageY - event.pageY)
141 ) >= this.options.distance
142 );
143 },
144
145 _mouseDelayMet: function(event) {
146 return this.mouseDelayMet;
147 },
148
149 // These are placeholder methods, to be overriden by extending plugin
150 _mouseStart: function(event) {},
151 _mouseDrag: function(event) {},
152 _mouseStop: function(event) {},
153 _mouseCapture: function(event) { return true; }
154 });
155
156 })(jQuery);