| 1 | /* |
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| 2 | * jQuery UI Droppable 1.7.2 |
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| 3 | * |
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| 4 | * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about) |
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| 5 | * Dual licensed under the MIT (MIT-LICENSE.txt) |
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| 6 | * and GPL (GPL-LICENSE.txt) licenses. |
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| 7 | * |
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| 8 | * http://docs.jquery.com/UI/Droppables |
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| 9 | * |
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| 10 | * Depends: |
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| 11 | * ui.core.js |
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| 12 | * ui.draggable.js |
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| 13 | */ |
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| 14 | (function($) { |
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| 15 | |
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| 16 | $.widget("ui.droppable", { |
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| 17 | |
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| 18 | _init: function() { |
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| 19 | |
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| 20 | var o = this.options, accept = o.accept; |
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| 21 | this.isover = 0; this.isout = 1; |
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| 22 | |
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| 23 | this.options.accept = this.options.accept && $.isFunction(this.options.accept) ? this.options.accept : function(d) { |
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| 24 | return d.is(accept); |
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| 25 | }; |
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| 26 | |
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| 27 | //Store the droppable's proportions |
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| 28 | this.proportions = { width: this.element[0].offsetWidth, height: this.element[0].offsetHeight }; |
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| 29 | |
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| 30 | // Add the reference and positions to the manager |
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| 31 | $.ui.ddmanager.droppables[this.options.scope] = $.ui.ddmanager.droppables[this.options.scope] || []; |
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| 32 | $.ui.ddmanager.droppables[this.options.scope].push(this); |
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| 33 | |
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| 34 | (this.options.addClasses && this.element.addClass("ui-droppable")); |
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| 35 | |
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| 36 | }, |
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| 37 | |
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| 38 | destroy: function() { |
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| 39 | var drop = $.ui.ddmanager.droppables[this.options.scope]; |
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| 40 | for ( var i = 0; i < drop.length; i++ ) |
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| 41 | if ( drop[i] == this ) |
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| 42 | drop.splice(i, 1); |
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| 43 | |
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| 44 | this.element |
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| 45 | .removeClass("ui-droppable ui-droppable-disabled") |
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| 46 | .removeData("droppable") |
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| 47 | .unbind(".droppable"); |
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| 48 | }, |
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| 49 | |
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| 50 | _setData: function(key, value) { |
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| 51 | |
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| 52 | if(key == 'accept') { |
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| 53 | this.options.accept = value && $.isFunction(value) ? value : function(d) { |
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| 54 | return d.is(value); |
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| 55 | }; |
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| 56 | } else { |
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| 57 | $.widget.prototype._setData.apply(this, arguments); |
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| 58 | } |
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| 59 | |
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| 60 | }, |
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| 61 | |
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| 62 | _activate: function(event) { |
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| 63 | var draggable = $.ui.ddmanager.current; |
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| 64 | if(this.options.activeClass) this.element.addClass(this.options.activeClass); |
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| 65 | (draggable && this._trigger('activate', event, this.ui(draggable))); |
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| 66 | }, |
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| 67 | |
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| 68 | _deactivate: function(event) { |
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| 69 | var draggable = $.ui.ddmanager.current; |
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| 70 | if(this.options.activeClass) this.element.removeClass(this.options.activeClass); |
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| 71 | (draggable && this._trigger('deactivate', event, this.ui(draggable))); |
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| 72 | }, |
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| 73 | |
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| 74 | _over: function(event) { |
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| 75 | |
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| 76 | var draggable = $.ui.ddmanager.current; |
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| 77 | if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element |
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| 78 | |
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| 79 | if (this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) { |
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| 80 | if(this.options.hoverClass) this.element.addClass(this.options.hoverClass); |
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| 81 | this._trigger('over', event, this.ui(draggable)); |
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| 82 | } |
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| 83 | |
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| 84 | }, |
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| 85 | |
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| 86 | _out: function(event) { |
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| 87 | |
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| 88 | var draggable = $.ui.ddmanager.current; |
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| 89 | if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return; // Bail if draggable and droppable are same element |
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| 90 | |
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| 91 | if (this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) { |
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| 92 | if(this.options.hoverClass) this.element.removeClass(this.options.hoverClass); |
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| 93 | this._trigger('out', event, this.ui(draggable)); |
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| 94 | } |
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| 95 | |
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| 96 | }, |
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| 97 | |
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| 98 | _drop: function(event,custom) { |
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| 99 | |
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| 100 | var draggable = custom || $.ui.ddmanager.current; |
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| 101 | if (!draggable || (draggable.currentItem || draggable.element)[0] == this.element[0]) return false; // Bail if draggable and droppable are same element |
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| 102 | |
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| 103 | var childrenIntersection = false; |
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| 104 | this.element.find(":data(droppable)").not(".ui-draggable-dragging").each(function() { |
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| 105 | var inst = $.data(this, 'droppable'); |
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| 106 | if(inst.options.greedy && $.ui.intersect(draggable, $.extend(inst, { offset: inst.element.offset() }), inst.options.tolerance)) { |
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| 107 | childrenIntersection = true; return false; |
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| 108 | } |
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| 109 | }); |
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| 110 | if(childrenIntersection) return false; |
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| 111 | |
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| 112 | if(this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) { |
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| 113 | if(this.options.activeClass) this.element.removeClass(this.options.activeClass); |
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| 114 | if(this.options.hoverClass) this.element.removeClass(this.options.hoverClass); |
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| 115 | this._trigger('drop', event, this.ui(draggable)); |
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| 116 | return this.element; |
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| 117 | } |
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| 118 | |
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| 119 | return false; |
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| 120 | |
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| 121 | }, |
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| 122 | |
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| 123 | ui: function(c) { |
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| 124 | return { |
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| 125 | draggable: (c.currentItem || c.element), |
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| 126 | helper: c.helper, |
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| 127 | position: c.position, |
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| 128 | absolutePosition: c.positionAbs, //deprecated |
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| 129 | offset: c.positionAbs |
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| 130 | }; |
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| 131 | } |
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| 132 | |
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| 133 | }); |
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| 134 | |
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| 135 | $.extend($.ui.droppable, { |
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| 136 | version: "1.7.2", |
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| 137 | eventPrefix: 'drop', |
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| 138 | defaults: { |
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| 139 | accept: '*', |
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| 140 | activeClass: false, |
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| 141 | addClasses: true, |
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| 142 | greedy: false, |
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| 143 | hoverClass: false, |
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| 144 | scope: 'default', |
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| 145 | tolerance: 'intersect' |
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| 146 | } |
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| 147 | }); |
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| 148 | |
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| 149 | $.ui.intersect = function(draggable, droppable, toleranceMode) { |
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| 150 | |
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| 151 | if (!droppable.offset) return false; |
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| 152 | |
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| 153 | var x1 = (draggable.positionAbs || draggable.position.absolute).left, x2 = x1 + draggable.helperProportions.width, |
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| 154 | y1 = (draggable.positionAbs || draggable.position.absolute).top, y2 = y1 + draggable.helperProportions.height; |
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| 155 | var l = droppable.offset.left, r = l + droppable.proportions.width, |
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| 156 | t = droppable.offset.top, b = t + droppable.proportions.height; |
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| 157 | |
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| 158 | switch (toleranceMode) { |
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| 159 | case 'fit': |
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| 160 | return (l < x1 && x2 < r |
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| 161 | && t < y1 && y2 < b); |
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| 162 | break; |
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| 163 | case 'intersect': |
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| 164 | return (l < x1 + (draggable.helperProportions.width / 2) // Right Half |
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| 165 | && x2 - (draggable.helperProportions.width / 2) < r // Left Half |
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| 166 | && t < y1 + (draggable.helperProportions.height / 2) // Bottom Half |
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| 167 | && y2 - (draggable.helperProportions.height / 2) < b ); // Top Half |
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| 168 | break; |
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| 169 | case 'pointer': |
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| 170 | var draggableLeft = ((draggable.positionAbs || draggable.position.absolute).left + (draggable.clickOffset || draggable.offset.click).left), |
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| 171 | draggableTop = ((draggable.positionAbs || draggable.position.absolute).top + (draggable.clickOffset || draggable.offset.click).top), |
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| 172 | isOver = $.ui.isOver(draggableTop, draggableLeft, t, l, droppable.proportions.height, droppable.proportions.width); |
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| 173 | return isOver; |
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| 174 | break; |
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| 175 | case 'touch': |
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| 176 | return ( |
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| 177 | (y1 >= t && y1 <= b) || // Top edge touching |
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| 178 | (y2 >= t && y2 <= b) || // Bottom edge touching |
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| 179 | (y1 < t && y2 > b) // Surrounded vertically |
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| 180 | ) && ( |
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| 181 | (x1 >= l && x1 <= r) || // Left edge touching |
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| 182 | (x2 >= l && x2 <= r) || // Right edge touching |
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| 183 | (x1 < l && x2 > r) // Surrounded horizontally |
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| 184 | ); |
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| 185 | break; |
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| 186 | default: |
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| 187 | return false; |
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| 188 | break; |
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| 189 | } |
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| 190 | |
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| 191 | }; |
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| 192 | |
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| 193 | /* |
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| 194 | This manager tracks offsets of draggables and droppables |
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| 195 | */ |
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| 196 | $.ui.ddmanager = { |
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| 197 | current: null, |
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| 198 | droppables: { 'default': [] }, |
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| 199 | prepareOffsets: function(t, event) { |
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| 200 | |
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| 201 | var m = $.ui.ddmanager.droppables[t.options.scope]; |
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| 202 | var type = event ? event.type : null; // workaround for #2317 |
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| 203 | var list = (t.currentItem || t.element).find(":data(droppable)").andSelf(); |
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| 204 | |
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| 205 | droppablesLoop: for (var i = 0; i < m.length; i++) { |
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| 206 | |
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| 207 | if(m[i].options.disabled || (t && !m[i].options.accept.call(m[i].element[0],(t.currentItem || t.element)))) continue; //No disabled and non-accepted |
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| 208 | for (var j=0; j < list.length; j++) { if(list[j] == m[i].element[0]) { m[i].proportions.height = 0; continue droppablesLoop; } }; //Filter out elements in the current dragged item |
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| 209 | m[i].visible = m[i].element.css("display") != "none"; if(!m[i].visible) continue; //If the element is not visible, continue |
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| 210 | |
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| 211 | m[i].offset = m[i].element.offset(); |
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| 212 | m[i].proportions = { width: m[i].element[0].offsetWidth, height: m[i].element[0].offsetHeight }; |
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| 213 | |
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| 214 | if(type == "mousedown") m[i]._activate.call(m[i], event); //Activate the droppable if used directly from draggables |
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| 215 | |
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| 216 | } |
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| 217 | |
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| 218 | }, |
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| 219 | drop: function(draggable, event) { |
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| 220 | |
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| 221 | var dropped = false; |
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| 222 | $.each($.ui.ddmanager.droppables[draggable.options.scope], function() { |
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| 223 | |
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| 224 | if(!this.options) return; |
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| 225 | if (!this.options.disabled && this.visible && $.ui.intersect(draggable, this, this.options.tolerance)) |
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| 226 | dropped = this._drop.call(this, event); |
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| 227 | |
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| 228 | if (!this.options.disabled && this.visible && this.options.accept.call(this.element[0],(draggable.currentItem || draggable.element))) { |
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| 229 | this.isout = 1; this.isover = 0; |
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| 230 | this._deactivate.call(this, event); |
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| 231 | } |
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| 232 | |
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| 233 | }); |
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| 234 | return dropped; |
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| 235 | |
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| 236 | }, |
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| 237 | drag: function(draggable, event) { |
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| 238 | |
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| 239 | //If you have a highly dynamic page, you might try this option. It renders positions every time you move the mouse. |
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| 240 | if(draggable.options.refreshPositions) $.ui.ddmanager.prepareOffsets(draggable, event); |
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| 241 | |
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| 242 | //Run through all droppables and check their positions based on specific tolerance options |
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| 243 | |
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| 244 | $.each($.ui.ddmanager.droppables[draggable.options.scope], function() { |
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| 245 | |
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| 246 | if(this.options.disabled || this.greedyChild || !this.visible) return; |
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| 247 | var intersects = $.ui.intersect(draggable, this, this.options.tolerance); |
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| 248 | |
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| 249 | var c = !intersects && this.isover == 1 ? 'isout' : (intersects && this.isover == 0 ? 'isover' : null); |
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| 250 | if(!c) return; |
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| 251 | |
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| 252 | var parentInstance; |
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| 253 | if (this.options.greedy) { |
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| 254 | var parent = this.element.parents(':data(droppable):eq(0)'); |
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| 255 | if (parent.length) { |
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| 256 | parentInstance = $.data(parent[0], 'droppable'); |
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| 257 | parentInstance.greedyChild = (c == 'isover' ? 1 : 0); |
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| 258 | } |
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| 259 | } |
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| 260 | |
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| 261 | // we just moved into a greedy child |
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| 262 | if (parentInstance && c == 'isover') { |
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| 263 | parentInstance['isover'] = 0; |
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| 264 | parentInstance['isout'] = 1; |
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| 265 | parentInstance._out.call(parentInstance, event); |
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| 266 | } |
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| 267 | |
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| 268 | this[c] = 1; this[c == 'isout' ? 'isover' : 'isout'] = 0; |
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| 269 | this[c == "isover" ? "_over" : "_out"].call(this, event); |
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| 270 | |
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| 271 | // we just moved out of a greedy child |
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| 272 | if (parentInstance && c == 'isout') { |
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| 273 | parentInstance['isout'] = 0; |
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| 274 | parentInstance['isover'] = 1; |
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| 275 | parentInstance._over.call(parentInstance, event); |
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| 276 | } |
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| 277 | }); |
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| 278 | |
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| 279 | } |
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| 280 | }; |
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| 281 | |
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| 282 | })(jQuery); |
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