[24421] | 1 | /*!
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| 2 | * jQuery UI Mouse 1.8.15
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| 3 | *
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| 4 | * Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
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| 5 | * Dual licensed under the MIT or GPL Version 2 licenses.
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| 6 | * http://jquery.org/license
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| 7 | *
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| 8 | * http://docs.jquery.com/UI/Mouse
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| 9 | *
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| 10 | * Depends:
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| 11 | * jquery.ui.widget.js
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| 12 | */
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| 13 | (function( $, undefined ) {
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| 14 |
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| 15 | $.widget("ui.mouse", {
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| 16 | options: {
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| 17 | cancel: ':input,option',
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| 18 | distance: 1,
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| 19 | delay: 0
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| 20 | },
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| 21 | _mouseInit: function() {
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| 22 | var self = this;
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| 23 |
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| 24 | this.element
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| 25 | .bind('mousedown.'+this.widgetName, function(event) {
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| 26 | return self._mouseDown(event);
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| 27 | })
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| 28 | .bind('click.'+this.widgetName, function(event) {
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| 29 | if (true === $.data(event.target, self.widgetName + '.preventClickEvent')) {
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| 30 | $.removeData(event.target, self.widgetName + '.preventClickEvent');
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| 31 | event.stopImmediatePropagation();
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| 32 | return false;
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| 33 | }
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| 34 | });
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| 35 |
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| 36 | this.started = false;
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| 37 | },
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| 38 |
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| 39 | // TODO: make sure destroying one instance of mouse doesn't mess with
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| 40 | // other instances of mouse
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| 41 | _mouseDestroy: function() {
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| 42 | this.element.unbind('.'+this.widgetName);
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| 43 | },
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| 44 |
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| 45 | _mouseDown: function(event) {
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| 46 | // don't let more than one widget handle mouseStart
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| 47 | // TODO: figure out why we have to use originalEvent
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| 48 | event.originalEvent = event.originalEvent || {};
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| 49 | if (event.originalEvent.mouseHandled) { return; }
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| 50 |
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| 51 | // we may have missed mouseup (out of window)
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| 52 | (this._mouseStarted && this._mouseUp(event));
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| 53 |
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| 54 | this._mouseDownEvent = event;
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| 55 |
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| 56 | var self = this,
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| 57 | btnIsLeft = (event.which == 1),
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| 58 | elIsCancel = (typeof this.options.cancel == "string" ? $(event.target).closest(this.options.cancel).length : false);
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| 59 | if (!btnIsLeft || elIsCancel || !this._mouseCapture(event)) {
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| 60 | return true;
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| 61 | }
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| 62 |
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| 63 | this.mouseDelayMet = !this.options.delay;
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| 64 | if (!this.mouseDelayMet) {
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| 65 | this._mouseDelayTimer = setTimeout(function() {
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| 66 | self.mouseDelayMet = true;
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| 67 | }, this.options.delay);
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| 68 | }
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| 69 |
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| 70 | if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
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| 71 | this._mouseStarted = (this._mouseStart(event) !== false);
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| 72 | if (!this._mouseStarted) {
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| 73 | event.preventDefault();
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| 74 | return true;
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| 75 | }
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| 76 | }
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| 77 |
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| 78 | // Click event may never have fired (Gecko & Opera)
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| 79 | if (true === $.data(event.target, this.widgetName + '.preventClickEvent')) {
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| 80 | $.removeData(event.target, this.widgetName + '.preventClickEvent');
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| 81 | }
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| 82 |
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| 83 | // these delegates are required to keep context
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| 84 | this._mouseMoveDelegate = function(event) {
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| 85 | return self._mouseMove(event);
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| 86 | };
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| 87 | this._mouseUpDelegate = function(event) {
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| 88 | return self._mouseUp(event);
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| 89 | };
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| 90 | $(document)
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| 91 | .bind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
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| 92 | .bind('mouseup.'+this.widgetName, this._mouseUpDelegate);
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| 93 |
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| 94 | event.preventDefault();
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| 95 | event.originalEvent.mouseHandled = true;
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| 96 | return true;
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| 97 | },
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| 98 |
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| 99 | _mouseMove: function(event) {
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| 100 | // IE mouseup check - mouseup happened when mouse was out of window
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| 101 | if ($.browser.msie && !(document.documentMode >= 9) && !event.button) {
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| 102 | return this._mouseUp(event);
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| 103 | }
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| 104 |
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| 105 | if (this._mouseStarted) {
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| 106 | this._mouseDrag(event);
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| 107 | return event.preventDefault();
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| 108 | }
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| 109 |
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| 110 | if (this._mouseDistanceMet(event) && this._mouseDelayMet(event)) {
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| 111 | this._mouseStarted =
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| 112 | (this._mouseStart(this._mouseDownEvent, event) !== false);
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| 113 | (this._mouseStarted ? this._mouseDrag(event) : this._mouseUp(event));
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| 114 | }
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| 115 |
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| 116 | return !this._mouseStarted;
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| 117 | },
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| 118 |
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| 119 | _mouseUp: function(event) {
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| 120 | $(document)
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| 121 | .unbind('mousemove.'+this.widgetName, this._mouseMoveDelegate)
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| 122 | .unbind('mouseup.'+this.widgetName, this._mouseUpDelegate);
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| 123 |
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| 124 | if (this._mouseStarted) {
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| 125 | this._mouseStarted = false;
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| 126 |
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| 127 | if (event.target == this._mouseDownEvent.target) {
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| 128 | $.data(event.target, this.widgetName + '.preventClickEvent', true);
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| 129 | }
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| 130 |
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| 131 | this._mouseStop(event);
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| 132 | }
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| 133 |
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| 134 | return false;
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| 135 | },
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| 136 |
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| 137 | _mouseDistanceMet: function(event) {
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| 138 | return (Math.max(
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| 139 | Math.abs(this._mouseDownEvent.pageX - event.pageX),
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| 140 | Math.abs(this._mouseDownEvent.pageY - event.pageY)
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| 141 | ) >= this.options.distance
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| 142 | );
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| 143 | },
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| 144 |
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| 145 | _mouseDelayMet: function(event) {
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| 146 | return this.mouseDelayMet;
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| 147 | },
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| 148 |
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| 149 | // These are placeholder methods, to be overriden by extending plugin
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| 150 | _mouseStart: function(event) {},
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| 151 | _mouseDrag: function(event) {},
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| 152 | _mouseStop: function(event) {},
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| 153 | _mouseCapture: function(event) { return true; }
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| 154 | });
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| 155 |
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| 156 | })(jQuery);
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