1 | /*!
|
---|
2 | * jQuery UI Mouse 1.8rc1
|
---|
3 | *
|
---|
4 | * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about)
|
---|
5 | * Dual licensed under the MIT (MIT-LICENSE.txt)
|
---|
6 | * and GPL (GPL-LICENSE.txt) licenses.
|
---|
7 | *
|
---|
8 | * http://docs.jquery.com/UI/Mouse
|
---|
9 | *
|
---|
10 | * Depends:
|
---|
11 | * jquery.ui.widget.js
|
---|
12 | */
|
---|
13 | (function($) {
|
---|
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(self._preventClickEvent) {
|
---|
30 | self._preventClickEvent = false;
|
---|
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 | // these delegates are required to keep context
|
---|
79 | this._mouseMoveDelegate = function(event) {
|
---|
80 | return self._mouseMove(event);
|
---|
81 | };
|
---|
82 | this._mouseUpDelegate = function(event) {
|
---|
83 | return self._mouseUp(event);
|
---|
84 | };
|
---|
85 | $(document)
|
---|
86 | .bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
|
---|
87 | .bind('mouseup.'+this.widgetName, this._mouseUpDelegate);
|
---|
88 |
|
---|
89 | // preventDefault() is used to prevent the selection of text here -
|
---|
90 | // however, in Safari, this causes select boxes not to be selectable
|
---|
91 | // anymore, so this fix is needed
|
---|
92 | ($.browser.safari || event.preventDefault());
|
---|
93 |
|
---|
94 | event.originalEvent.mouseHandled = true;
|
---|
95 | return true;
|
---|
96 | },
|
---|
97 |
|
---|
98 | _mouseMove: function(event) {
|
---|
99 | // IE mouseup check - mouseup happened when mouse was out of window
|
---|
100 | if ($.browser.msie && !event.button) {
|
---|
101 | return this._mouseUp(event);
|
---|
102 | }
|
---|
103 |
|
---|
104 | if (this._mouseStarted) {
|
---|
105 | this._mouseDrag(event);
|
---|
106 | return event.preventDefault();
|
---|
107 | }
|
---|
108 |
|
---|
109 | if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
|
---|
110 | this._mouseStarted =
|
---|
111 | (this._mouseStart(this._mouseDownEvent, event) !== false);
|
---|
112 | (this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
|
---|
113 | }
|
---|
114 |
|
---|
115 | return !this._mouseStarted;
|
---|
116 | },
|
---|
117 |
|
---|
118 | _mouseUp: function(event) {
|
---|
119 | $(document)
|
---|
120 | .unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
|
---|
121 | .unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);
|
---|
122 |
|
---|
123 | if (this._mouseStarted) {
|
---|
124 | this._mouseStarted = false;
|
---|
125 | this._preventClickEvent = (event.target == this._mouseDownEvent.target);
|
---|
126 | this._mouseStop(event);
|
---|
127 | }
|
---|
128 |
|
---|
129 | return false;
|
---|
130 | },
|
---|
131 |
|
---|
132 | _mouseDistanceMet: function(event) {
|
---|
133 | return (Math.max(
|
---|
134 | Math.abs(this._mouseDownEvent.pageX - event.pageX),
|
---|
135 | Math.abs(this._mouseDownEvent.pageY - event.pageY)
|
---|
136 | ) >= this.options.distance
|
---|
137 | );
|
---|
138 | },
|
---|
139 |
|
---|
140 | _mouseDelayMet: function(event) {
|
---|
141 | return this.mouseDelayMet;
|
---|
142 | },
|
---|
143 |
|
---|
144 | // These are placeholder methods, to be overriden by extending plugin
|
---|
145 | _mouseStart: function(event) {},
|
---|
146 | _mouseDrag: function(event) {},
|
---|
147 | _mouseStop: function(event) {},
|
---|
148 | _mouseCapture: function(event) { return true; }
|
---|
149 | });
|
---|
150 |
|
---|
151 | })(jQuery);
|
---|