[795] | 1 | // script.aculo.us dragdrop.js v1.6.5, Wed Nov 08 14:17:49 CET 2006 |
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| 2 | |
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| 3 | // Copyright (c) 2005, 2006 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) |
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| 4 | // (c) 2005, 2006 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz) |
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| 5 | // |
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| 6 | // script.aculo.us is freely distributable under the terms of an MIT-style license. |
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| 7 | // For details, see the script.aculo.us web site: http://script.aculo.us/ |
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| 8 | |
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| 9 | if(typeof Effect == 'undefined') |
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| 10 | throw("dragdrop.js requires including script.aculo.us' effects.js library"); |
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| 11 | |
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| 12 | var Droppables = { |
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| 13 | drops: [], |
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| 14 | |
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| 15 | remove: function(element) { |
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| 16 | this.drops = this.drops.reject(function(d) { return d.element==$(element) }); |
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| 17 | }, |
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| 18 | |
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| 19 | add: function(element) { |
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| 20 | element = $(element); |
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| 21 | var options = Object.extend({ |
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| 22 | greedy: true, |
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| 23 | hoverclass: null, |
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| 24 | tree: false |
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| 25 | }, arguments[1] || {}); |
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| 26 | |
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| 27 | // cache containers |
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| 28 | if(options.containment) { |
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| 29 | options._containers = []; |
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| 30 | var containment = options.containment; |
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| 31 | if((typeof containment == 'object') && |
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| 32 | (containment.constructor == Array)) { |
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| 33 | containment.each( function(c) { options._containers.push($(c)) }); |
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| 34 | } else { |
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| 35 | options._containers.push($(containment)); |
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| 36 | } |
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| 37 | } |
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| 38 | |
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| 39 | if(options.accept) options.accept = [options.accept].flatten(); |
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| 40 | |
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| 41 | Element.makePositioned(element); // fix IE |
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| 42 | options.element = element; |
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| 43 | |
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| 44 | this.drops.push(options); |
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| 45 | }, |
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| 46 | |
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| 47 | findDeepestChild: function(drops) { |
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| 48 | deepest = drops[0]; |
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| 49 | |
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| 50 | for (i = 1; i < drops.length; ++i) |
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| 51 | if (Element.isParent(drops[i].element, deepest.element)) |
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| 52 | deepest = drops[i]; |
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| 53 | |
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| 54 | return deepest; |
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| 55 | }, |
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| 56 | |
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| 57 | isContained: function(element, drop) { |
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| 58 | var containmentNode; |
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| 59 | if(drop.tree) { |
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| 60 | containmentNode = element.treeNode; |
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| 61 | } else { |
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| 62 | containmentNode = element.parentNode; |
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| 63 | } |
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| 64 | return drop._containers.detect(function(c) { return containmentNode == c }); |
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| 65 | }, |
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| 66 | |
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| 67 | isAffected: function(point, element, drop) { |
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| 68 | return ( |
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| 69 | (drop.element!=element) && |
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| 70 | ((!drop._containers) || |
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| 71 | this.isContained(element, drop)) && |
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| 72 | ((!drop.accept) || |
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| 73 | (Element.classNames(element).detect( |
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| 74 | function(v) { return drop.accept.include(v) } ) )) && |
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| 75 | Position.within(drop.element, point[0], point[1]) ); |
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| 76 | }, |
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| 77 | |
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| 78 | deactivate: function(drop) { |
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| 79 | if(drop.hoverclass) |
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| 80 | Element.removeClassName(drop.element, drop.hoverclass); |
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| 81 | this.last_active = null; |
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| 82 | }, |
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| 83 | |
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| 84 | activate: function(drop) { |
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| 85 | if(drop.hoverclass) |
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| 86 | Element.addClassName(drop.element, drop.hoverclass); |
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| 87 | this.last_active = drop; |
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| 88 | }, |
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| 89 | |
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| 90 | show: function(point, element) { |
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| 91 | if(!this.drops.length) return; |
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| 92 | var affected = []; |
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| 93 | |
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| 94 | if(this.last_active) this.deactivate(this.last_active); |
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| 95 | this.drops.each( function(drop) { |
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| 96 | if(Droppables.isAffected(point, element, drop)) |
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| 97 | affected.push(drop); |
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| 98 | }); |
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| 99 | |
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| 100 | if(affected.length>0) { |
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| 101 | drop = Droppables.findDeepestChild(affected); |
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| 102 | Position.within(drop.element, point[0], point[1]); |
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| 103 | if(drop.onHover) |
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| 104 | drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); |
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| 105 | |
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| 106 | Droppables.activate(drop); |
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| 107 | } |
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| 108 | }, |
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| 109 | |
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| 110 | fire: function(event, element) { |
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| 111 | if(!this.last_active) return; |
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| 112 | Position.prepare(); |
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| 113 | |
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| 114 | if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active)) |
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| 115 | if (this.last_active.onDrop) |
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| 116 | this.last_active.onDrop(element, this.last_active.element, event); |
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| 117 | }, |
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| 118 | |
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| 119 | reset: function() { |
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| 120 | if(this.last_active) |
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| 121 | this.deactivate(this.last_active); |
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| 122 | } |
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| 123 | }; |
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| 124 | |
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| 125 | var Draggables = { |
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| 126 | drags: [], |
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| 127 | observers: [], |
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| 128 | |
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| 129 | register: function(draggable) { |
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| 130 | if(this.drags.length == 0) { |
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| 131 | this.eventMouseUp = this.endDrag.bindAsEventListener(this); |
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| 132 | this.eventMouseMove = this.updateDrag.bindAsEventListener(this); |
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| 133 | this.eventKeypress = this.keyPress.bindAsEventListener(this); |
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| 134 | |
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| 135 | Event.observe(document, "mouseup", this.eventMouseUp); |
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| 136 | Event.observe(document, "mousemove", this.eventMouseMove); |
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| 137 | Event.observe(document, "keypress", this.eventKeypress); |
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| 138 | } |
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| 139 | this.drags.push(draggable); |
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| 140 | }, |
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| 141 | |
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| 142 | unregister: function(draggable) { |
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| 143 | this.drags = this.drags.reject(function(d) { return d==draggable }); |
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| 144 | if(this.drags.length == 0) { |
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| 145 | Event.stopObserving(document, "mouseup", this.eventMouseUp); |
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| 146 | Event.stopObserving(document, "mousemove", this.eventMouseMove); |
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| 147 | Event.stopObserving(document, "keypress", this.eventKeypress); |
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| 148 | } |
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| 149 | }, |
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| 150 | |
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| 151 | activate: function(draggable) { |
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| 152 | if(draggable.options.delay) { |
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| 153 | this._timeout = setTimeout(function() { |
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| 154 | Draggables._timeout = null; |
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| 155 | window.focus(); |
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| 156 | Draggables.activeDraggable = draggable; |
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| 157 | }.bind(this), draggable.options.delay); |
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| 158 | } else { |
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| 159 | window.focus(); // allows keypress events if window isn't currently focused, fails for Safari |
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| 160 | this.activeDraggable = draggable; |
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| 161 | } |
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| 162 | }, |
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| 163 | |
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| 164 | deactivate: function() { |
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| 165 | this.activeDraggable = null; |
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| 166 | }, |
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| 167 | |
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| 168 | updateDrag: function(event) { |
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| 169 | if(!this.activeDraggable) return; |
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| 170 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
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| 171 | // Mozilla-based browsers fire successive mousemove events with |
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| 172 | // the same coordinates, prevent needless redrawing (moz bug?) |
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| 173 | if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return; |
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| 174 | this._lastPointer = pointer; |
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| 175 | |
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| 176 | this.activeDraggable.updateDrag(event, pointer); |
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| 177 | }, |
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| 178 | |
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| 179 | endDrag: function(event) { |
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| 180 | if(this._timeout) { |
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| 181 | clearTimeout(this._timeout); |
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| 182 | this._timeout = null; |
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| 183 | } |
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| 184 | if(!this.activeDraggable) return; |
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| 185 | this._lastPointer = null; |
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| 186 | this.activeDraggable.endDrag(event); |
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| 187 | this.activeDraggable = null; |
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| 188 | }, |
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| 189 | |
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| 190 | keyPress: function(event) { |
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| 191 | if(this.activeDraggable) |
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| 192 | this.activeDraggable.keyPress(event); |
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| 193 | }, |
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| 194 | |
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| 195 | addObserver: function(observer) { |
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| 196 | this.observers.push(observer); |
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| 197 | this._cacheObserverCallbacks(); |
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| 198 | }, |
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| 199 | |
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| 200 | removeObserver: function(element) { // element instead of observer fixes mem leaks |
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| 201 | this.observers = this.observers.reject( function(o) { return o.element==element }); |
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| 202 | this._cacheObserverCallbacks(); |
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| 203 | }, |
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| 204 | |
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| 205 | notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag' |
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| 206 | if(this[eventName+'Count'] > 0) |
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| 207 | this.observers.each( function(o) { |
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| 208 | if(o[eventName]) o[eventName](eventName, draggable, event); |
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| 209 | }); |
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| 210 | if(draggable.options[eventName]) draggable.options[eventName](draggable, event); |
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| 211 | }, |
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| 212 | |
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| 213 | _cacheObserverCallbacks: function() { |
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| 214 | ['onStart','onEnd','onDrag'].each( function(eventName) { |
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| 215 | Draggables[eventName+'Count'] = Draggables.observers.select( |
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| 216 | function(o) { return o[eventName]; } |
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| 217 | ).length; |
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| 218 | }); |
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| 219 | } |
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| 220 | }; |
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| 221 | |
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| 222 | /*--------------------------------------------------------------------------*/ |
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| 223 | |
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| 224 | var Draggable = Class.create(); |
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| 225 | Draggable._dragging = {}; |
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| 226 | |
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| 227 | Draggable.prototype = { |
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| 228 | initialize: function(element) { |
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| 229 | var defaults = { |
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| 230 | handle: false, |
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| 231 | reverteffect: function(element, top_offset, left_offset) { |
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| 232 | var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02; |
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| 233 | new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur, |
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| 234 | queue: {scope:'_draggable', position:'end'} |
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| 235 | }); |
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| 236 | }, |
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| 237 | endeffect: function(element) { |
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| 238 | var toOpacity = typeof element._opacity == 'number' ? element._opacity : 1.0; |
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| 239 | new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, |
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| 240 | queue: {scope:'_draggable', position:'end'}, |
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| 241 | afterFinish: function(){ |
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| 242 | Draggable._dragging[element] = false |
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| 243 | } |
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| 244 | }); |
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| 245 | }, |
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| 246 | zindex: 1000, |
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| 247 | revert: false, |
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| 248 | scroll: false, |
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| 249 | scrollSensitivity: 20, |
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| 250 | scrollSpeed: 15, |
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| 251 | snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] } |
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| 252 | delay: 0 |
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| 253 | }; |
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| 254 | |
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| 255 | if(!arguments[1] || typeof arguments[1].endeffect == 'undefined') |
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| 256 | Object.extend(defaults, { |
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| 257 | starteffect: function(element) { |
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| 258 | element._opacity = Element.getOpacity(element); |
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| 259 | Draggable._dragging[element] = true; |
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| 260 | new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); |
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| 261 | } |
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| 262 | }); |
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| 263 | |
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| 264 | var options = Object.extend(defaults, arguments[1] || {}); |
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| 265 | |
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| 266 | this.element = $(element); |
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| 267 | |
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| 268 | if(options.handle && (typeof options.handle == 'string')) |
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| 269 | this.handle = this.element.down('.'+options.handle, 0); |
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| 270 | |
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| 271 | if(!this.handle) this.handle = $(options.handle); |
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| 272 | if(!this.handle) this.handle = this.element; |
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| 273 | |
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| 274 | if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) { |
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| 275 | options.scroll = $(options.scroll); |
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| 276 | this._isScrollChild = Element.childOf(this.element, options.scroll); |
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| 277 | } |
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| 278 | |
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| 279 | Element.makePositioned(this.element); // fix IE |
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| 280 | |
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| 281 | this.delta = this.currentDelta(); |
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| 282 | this.options = options; |
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| 283 | this.dragging = false; |
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| 284 | |
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| 285 | this.eventMouseDown = this.initDrag.bindAsEventListener(this); |
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| 286 | Event.observe(this.handle, "mousedown", this.eventMouseDown); |
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| 287 | |
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| 288 | Draggables.register(this); |
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| 289 | }, |
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| 290 | |
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| 291 | destroy: function() { |
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| 292 | Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); |
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| 293 | Draggables.unregister(this); |
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| 294 | }, |
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| 295 | |
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| 296 | currentDelta: function() { |
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| 297 | return([ |
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| 298 | parseInt(Element.getStyle(this.element,'left') || '0'), |
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| 299 | parseInt(Element.getStyle(this.element,'top') || '0')]); |
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| 300 | }, |
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| 301 | |
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| 302 | initDrag: function(event) { |
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| 303 | if(typeof Draggable._dragging[this.element] != 'undefined' && |
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| 304 | Draggable._dragging[this.element]) return; |
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| 305 | if(Event.isLeftClick(event)) { |
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| 306 | // abort on form elements, fixes a Firefox issue |
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| 307 | var src = Event.element(event); |
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| 308 | if(src.tagName && ( |
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| 309 | src.tagName=='INPUT' || |
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| 310 | src.tagName=='SELECT' || |
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| 311 | src.tagName=='OPTION' || |
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| 312 | src.tagName=='BUTTON' || |
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| 313 | src.tagName=='TEXTAREA')) return; |
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| 314 | |
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| 315 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
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| 316 | var pos = Position.cumulativeOffset(this.element); |
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| 317 | this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) }); |
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| 318 | |
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| 319 | Draggables.activate(this); |
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| 320 | Event.stop(event); |
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| 321 | } |
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| 322 | }, |
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| 323 | |
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| 324 | startDrag: function(event) { |
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| 325 | this.dragging = true; |
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| 326 | |
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| 327 | if(this.options.zindex) { |
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| 328 | this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); |
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| 329 | this.element.style.zIndex = this.options.zindex; |
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| 330 | } |
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| 331 | |
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| 332 | if(this.options.ghosting) { |
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| 333 | this._clone = this.element.cloneNode(true); |
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| 334 | Position.absolutize(this.element); |
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| 335 | this.element.parentNode.insertBefore(this._clone, this.element); |
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| 336 | } |
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| 337 | |
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| 338 | if(this.options.scroll) { |
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| 339 | if (this.options.scroll == window) { |
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| 340 | var where = this._getWindowScroll(this.options.scroll); |
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| 341 | this.originalScrollLeft = where.left; |
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| 342 | this.originalScrollTop = where.top; |
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| 343 | } else { |
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| 344 | this.originalScrollLeft = this.options.scroll.scrollLeft; |
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| 345 | this.originalScrollTop = this.options.scroll.scrollTop; |
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| 346 | } |
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| 347 | } |
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| 348 | |
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| 349 | Draggables.notify('onStart', this, event); |
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| 350 | |
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| 351 | if(this.options.starteffect) this.options.starteffect(this.element); |
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| 352 | }, |
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| 353 | |
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| 354 | updateDrag: function(event, pointer) { |
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| 355 | if(!this.dragging) this.startDrag(event); |
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| 356 | Position.prepare(); |
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| 357 | Droppables.show(pointer, this.element); |
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| 358 | Draggables.notify('onDrag', this, event); |
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| 359 | |
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| 360 | this.draw(pointer); |
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| 361 | if(this.options.change) this.options.change(this); |
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| 362 | |
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| 363 | if(this.options.scroll) { |
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| 364 | this.stopScrolling(); |
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| 365 | |
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| 366 | var p; |
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| 367 | if (this.options.scroll == window) { |
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| 368 | with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; } |
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| 369 | } else { |
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| 370 | p = Position.page(this.options.scroll); |
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| 371 | p[0] += this.options.scroll.scrollLeft + Position.deltaX; |
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| 372 | p[1] += this.options.scroll.scrollTop + Position.deltaY; |
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| 373 | p.push(p[0]+this.options.scroll.offsetWidth); |
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| 374 | p.push(p[1]+this.options.scroll.offsetHeight); |
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| 375 | } |
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| 376 | var speed = [0,0]; |
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| 377 | if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity); |
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| 378 | if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity); |
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| 379 | if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity); |
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| 380 | if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity); |
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| 381 | this.startScrolling(speed); |
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| 382 | } |
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| 383 | |
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| 384 | // fix AppleWebKit rendering |
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| 385 | if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0); |
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| 386 | |
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| 387 | Event.stop(event); |
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| 388 | }, |
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| 389 | |
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| 390 | finishDrag: function(event, success) { |
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| 391 | this.dragging = false; |
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| 392 | |
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| 393 | if(this.options.ghosting) { |
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| 394 | Position.relativize(this.element); |
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| 395 | Element.remove(this._clone); |
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| 396 | this._clone = null; |
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| 397 | } |
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| 398 | |
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| 399 | if(success) Droppables.fire(event, this.element); |
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| 400 | Draggables.notify('onEnd', this, event); |
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| 401 | |
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| 402 | var revert = this.options.revert; |
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| 403 | if(revert && typeof revert == 'function') revert = revert(this.element); |
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| 404 | |
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| 405 | var d = this.currentDelta(); |
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| 406 | if(revert && this.options.reverteffect) { |
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| 407 | this.options.reverteffect(this.element, |
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| 408 | d[1]-this.delta[1], d[0]-this.delta[0]); |
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| 409 | } else { |
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| 410 | this.delta = d; |
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| 411 | } |
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| 412 | |
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| 413 | if(this.options.zindex) |
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| 414 | this.element.style.zIndex = this.originalZ; |
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| 415 | |
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| 416 | if(this.options.endeffect) |
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| 417 | this.options.endeffect(this.element); |
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| 418 | |
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| 419 | Draggables.deactivate(this); |
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| 420 | Droppables.reset(); |
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| 421 | }, |
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| 422 | |
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| 423 | keyPress: function(event) { |
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| 424 | if(event.keyCode!=Event.KEY_ESC) return; |
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| 425 | this.finishDrag(event, false); |
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| 426 | Event.stop(event); |
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| 427 | }, |
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| 428 | |
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| 429 | endDrag: function(event) { |
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| 430 | if(!this.dragging) return; |
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| 431 | this.stopScrolling(); |
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| 432 | this.finishDrag(event, true); |
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| 433 | Event.stop(event); |
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| 434 | }, |
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| 435 | |
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| 436 | draw: function(point) { |
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| 437 | var pos = Position.cumulativeOffset(this.element); |
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| 438 | if(this.options.ghosting) { |
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| 439 | var r = Position.realOffset(this.element); |
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| 440 | pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; |
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| 441 | } |
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| 442 | |
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| 443 | var d = this.currentDelta(); |
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| 444 | pos[0] -= d[0]; pos[1] -= d[1]; |
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| 445 | |
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| 446 | if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) { |
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| 447 | pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft; |
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| 448 | pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop; |
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| 449 | } |
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| 450 | |
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| 451 | var p = [0,1].map(function(i){ |
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| 452 | return (point[i]-pos[i]-this.offset[i]) |
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| 453 | }.bind(this)); |
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| 454 | |
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| 455 | if(this.options.snap) { |
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| 456 | if(typeof this.options.snap == 'function') { |
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| 457 | p = this.options.snap(p[0],p[1],this); |
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| 458 | } else { |
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| 459 | if(this.options.snap instanceof Array) { |
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| 460 | p = p.map( function(v, i) { |
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| 461 | return Math.round(v/this.options.snap[i])*this.options.snap[i] }.bind(this)) |
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| 462 | } else { |
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| 463 | p = p.map( function(v) { |
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| 464 | return Math.round(v/this.options.snap)*this.options.snap }.bind(this)) |
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| 465 | } |
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| 466 | }} |
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| 467 | |
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| 468 | var style = this.element.style; |
---|
| 469 | if((!this.options.constraint) || (this.options.constraint=='horizontal')) |
---|
| 470 | style.left = p[0] + "px"; |
---|
| 471 | if((!this.options.constraint) || (this.options.constraint=='vertical')) |
---|
| 472 | style.top = p[1] + "px"; |
---|
| 473 | |
---|
| 474 | if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering |
---|
| 475 | }, |
---|
| 476 | |
---|
| 477 | stopScrolling: function() { |
---|
| 478 | if(this.scrollInterval) { |
---|
| 479 | clearInterval(this.scrollInterval); |
---|
| 480 | this.scrollInterval = null; |
---|
| 481 | Draggables._lastScrollPointer = null; |
---|
| 482 | } |
---|
| 483 | }, |
---|
| 484 | |
---|
| 485 | startScrolling: function(speed) { |
---|
| 486 | if(!(speed[0] || speed[1])) return; |
---|
| 487 | this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed]; |
---|
| 488 | this.lastScrolled = new Date(); |
---|
| 489 | this.scrollInterval = setInterval(this.scroll.bind(this), 10); |
---|
| 490 | }, |
---|
| 491 | |
---|
| 492 | scroll: function() { |
---|
| 493 | var current = new Date(); |
---|
| 494 | var delta = current - this.lastScrolled; |
---|
| 495 | this.lastScrolled = current; |
---|
| 496 | if(this.options.scroll == window) { |
---|
| 497 | with (this._getWindowScroll(this.options.scroll)) { |
---|
| 498 | if (this.scrollSpeed[0] || this.scrollSpeed[1]) { |
---|
| 499 | var d = delta / 1000; |
---|
| 500 | this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] ); |
---|
| 501 | } |
---|
| 502 | } |
---|
| 503 | } else { |
---|
| 504 | this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000; |
---|
| 505 | this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000; |
---|
| 506 | } |
---|
| 507 | |
---|
| 508 | Position.prepare(); |
---|
| 509 | Droppables.show(Draggables._lastPointer, this.element); |
---|
| 510 | Draggables.notify('onDrag', this); |
---|
| 511 | if (this._isScrollChild) { |
---|
| 512 | Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer); |
---|
| 513 | Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000; |
---|
| 514 | Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000; |
---|
| 515 | if (Draggables._lastScrollPointer[0] < 0) |
---|
| 516 | Draggables._lastScrollPointer[0] = 0; |
---|
| 517 | if (Draggables._lastScrollPointer[1] < 0) |
---|
| 518 | Draggables._lastScrollPointer[1] = 0; |
---|
| 519 | this.draw(Draggables._lastScrollPointer); |
---|
| 520 | } |
---|
| 521 | |
---|
| 522 | if(this.options.change) this.options.change(this); |
---|
| 523 | }, |
---|
| 524 | |
---|
| 525 | _getWindowScroll: function(w) { |
---|
| 526 | var T, L, W, H; |
---|
| 527 | with (w.document) { |
---|
| 528 | if (w.document.documentElement && documentElement.scrollTop) { |
---|
| 529 | T = documentElement.scrollTop; |
---|
| 530 | L = documentElement.scrollLeft; |
---|
| 531 | } else if (w.document.body) { |
---|
| 532 | T = body.scrollTop; |
---|
| 533 | L = body.scrollLeft; |
---|
| 534 | } |
---|
| 535 | if (w.innerWidth) { |
---|
| 536 | W = w.innerWidth; |
---|
| 537 | H = w.innerHeight; |
---|
| 538 | } else if (w.document.documentElement && documentElement.clientWidth) { |
---|
| 539 | W = documentElement.clientWidth; |
---|
| 540 | H = documentElement.clientHeight; |
---|
| 541 | } else { |
---|
| 542 | W = body.offsetWidth; |
---|
| 543 | H = body.offsetHeight |
---|
| 544 | } |
---|
| 545 | } |
---|
| 546 | return { top: T, left: L, width: W, height: H }; |
---|
| 547 | } |
---|
| 548 | }; |
---|
| 549 | |
---|
| 550 | /*--------------------------------------------------------------------------*/ |
---|
| 551 | |
---|
| 552 | var SortableObserver = Class.create(); |
---|
| 553 | SortableObserver.prototype = { |
---|
| 554 | initialize: function(element, observer) { |
---|
| 555 | this.element = $(element); |
---|
| 556 | this.observer = observer; |
---|
| 557 | this.lastValue = Sortable.serialize(this.element); |
---|
| 558 | }, |
---|
| 559 | |
---|
| 560 | onStart: function() { |
---|
| 561 | this.lastValue = Sortable.serialize(this.element); |
---|
| 562 | }, |
---|
| 563 | |
---|
| 564 | onEnd: function() { |
---|
| 565 | Sortable.unmark(); |
---|
| 566 | if(this.lastValue != Sortable.serialize(this.element)) |
---|
| 567 | this.observer(this.element) |
---|
| 568 | } |
---|
| 569 | }; |
---|
| 570 | |
---|
| 571 | var Sortable = { |
---|
| 572 | SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, |
---|
| 573 | |
---|
| 574 | sortables: {}, |
---|
| 575 | |
---|
| 576 | _findRootElement: function(element) { |
---|
| 577 | while (element.tagName != "BODY") { |
---|
| 578 | if(element.id && Sortable.sortables[element.id]) return element; |
---|
| 579 | element = element.parentNode; |
---|
| 580 | } |
---|
| 581 | }, |
---|
| 582 | |
---|
| 583 | options: function(element) { |
---|
| 584 | element = Sortable._findRootElement($(element)); |
---|
| 585 | if(!element) return; |
---|
| 586 | return Sortable.sortables[element.id]; |
---|
| 587 | }, |
---|
| 588 | |
---|
| 589 | destroy: function(element){ |
---|
| 590 | var s = Sortable.options(element); |
---|
| 591 | |
---|
| 592 | if(s) { |
---|
| 593 | Draggables.removeObserver(s.element); |
---|
| 594 | s.droppables.each(function(d){ Droppables.remove(d) }); |
---|
| 595 | s.draggables.invoke('destroy'); |
---|
| 596 | |
---|
| 597 | delete Sortable.sortables[s.element.id]; |
---|
| 598 | } |
---|
| 599 | }, |
---|
| 600 | |
---|
| 601 | create: function(element) { |
---|
| 602 | element = $(element); |
---|
| 603 | var options = Object.extend({ |
---|
| 604 | element: element, |
---|
| 605 | tag: 'li', // assumes li children, override with tag: 'tagname' |
---|
| 606 | dropOnEmpty: false, |
---|
| 607 | tree: false, |
---|
| 608 | treeTag: 'ul', |
---|
| 609 | overlap: 'vertical', // one of 'vertical', 'horizontal' |
---|
| 610 | constraint: 'vertical', // one of 'vertical', 'horizontal', false |
---|
| 611 | containment: element, // also takes array of elements (or id's); or false |
---|
| 612 | handle: false, // or a CSS class |
---|
| 613 | only: false, |
---|
| 614 | delay: 0, |
---|
| 615 | hoverclass: null, |
---|
| 616 | ghosting: false, |
---|
| 617 | scroll: false, |
---|
| 618 | scrollSensitivity: 20, |
---|
| 619 | scrollSpeed: 15, |
---|
| 620 | format: this.SERIALIZE_RULE, |
---|
| 621 | onChange: Prototype.emptyFunction, |
---|
| 622 | onUpdate: Prototype.emptyFunction |
---|
| 623 | }, arguments[1] || {}); |
---|
| 624 | |
---|
| 625 | // clear any old sortable with same element |
---|
| 626 | this.destroy(element); |
---|
| 627 | |
---|
| 628 | // build options for the draggables |
---|
| 629 | var options_for_draggable = { |
---|
| 630 | revert: true, |
---|
| 631 | scroll: options.scroll, |
---|
| 632 | scrollSpeed: options.scrollSpeed, |
---|
| 633 | scrollSensitivity: options.scrollSensitivity, |
---|
| 634 | delay: options.delay, |
---|
| 635 | ghosting: options.ghosting, |
---|
| 636 | constraint: options.constraint, |
---|
| 637 | handle: options.handle }; |
---|
| 638 | |
---|
| 639 | if(options.starteffect) |
---|
| 640 | options_for_draggable.starteffect = options.starteffect; |
---|
| 641 | |
---|
| 642 | if(options.reverteffect) |
---|
| 643 | options_for_draggable.reverteffect = options.reverteffect; |
---|
| 644 | else |
---|
| 645 | if(options.ghosting) options_for_draggable.reverteffect = function(element) { |
---|
| 646 | element.style.top = 0; |
---|
| 647 | element.style.left = 0; |
---|
| 648 | }; |
---|
| 649 | |
---|
| 650 | if(options.endeffect) |
---|
| 651 | options_for_draggable.endeffect = options.endeffect; |
---|
| 652 | |
---|
| 653 | if(options.zindex) |
---|
| 654 | options_for_draggable.zindex = options.zindex; |
---|
| 655 | |
---|
| 656 | // build options for the droppables |
---|
| 657 | var options_for_droppable = { |
---|
| 658 | overlap: options.overlap, |
---|
| 659 | containment: options.containment, |
---|
| 660 | tree: options.tree, |
---|
| 661 | hoverclass: options.hoverclass, |
---|
| 662 | onHover: Sortable.onHover |
---|
| 663 | }; |
---|
| 664 | |
---|
| 665 | var options_for_tree = { |
---|
| 666 | onHover: Sortable.onEmptyHover, |
---|
| 667 | overlap: options.overlap, |
---|
| 668 | containment: options.containment, |
---|
| 669 | hoverclass: options.hoverclass |
---|
| 670 | }; |
---|
| 671 | |
---|
| 672 | // fix for gecko engine |
---|
| 673 | Element.cleanWhitespace(element); |
---|
| 674 | |
---|
| 675 | options.draggables = []; |
---|
| 676 | options.droppables = []; |
---|
| 677 | |
---|
| 678 | // drop on empty handling |
---|
| 679 | if(options.dropOnEmpty || options.tree) { |
---|
| 680 | Droppables.add(element, options_for_tree); |
---|
| 681 | options.droppables.push(element); |
---|
| 682 | } |
---|
| 683 | |
---|
| 684 | (this.findElements(element, options) || []).each( function(e) { |
---|
| 685 | // handles are per-draggable |
---|
| 686 | var handle = options.handle ? |
---|
| 687 | $(e).down('.'+options.handle,0) : e; |
---|
| 688 | options.draggables.push( |
---|
| 689 | new Draggable(e, Object.extend(options_for_draggable, { handle: handle }))); |
---|
| 690 | Droppables.add(e, options_for_droppable); |
---|
| 691 | if(options.tree) e.treeNode = element; |
---|
| 692 | options.droppables.push(e); |
---|
| 693 | }); |
---|
| 694 | |
---|
| 695 | if(options.tree) { |
---|
| 696 | (Sortable.findTreeElements(element, options) || []).each( function(e) { |
---|
| 697 | Droppables.add(e, options_for_tree); |
---|
| 698 | e.treeNode = element; |
---|
| 699 | options.droppables.push(e); |
---|
| 700 | }); |
---|
| 701 | } |
---|
| 702 | |
---|
| 703 | // keep reference |
---|
| 704 | this.sortables[element.id] = options; |
---|
| 705 | |
---|
| 706 | // for onupdate |
---|
| 707 | Draggables.addObserver(new SortableObserver(element, options.onUpdate)); |
---|
| 708 | |
---|
| 709 | }, |
---|
| 710 | |
---|
| 711 | // return all suitable-for-sortable elements in a guaranteed order |
---|
| 712 | findElements: function(element, options) { |
---|
| 713 | return Element.findChildren( |
---|
| 714 | element, options.only, options.tree ? true : false, options.tag); |
---|
| 715 | }, |
---|
| 716 | |
---|
| 717 | findTreeElements: function(element, options) { |
---|
| 718 | return Element.findChildren( |
---|
| 719 | element, options.only, options.tree ? true : false, options.treeTag); |
---|
| 720 | }, |
---|
| 721 | |
---|
| 722 | onHover: function(element, dropon, overlap) { |
---|
| 723 | if(Element.isParent(dropon, element)) return; |
---|
| 724 | |
---|
| 725 | if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) { |
---|
| 726 | return; |
---|
| 727 | } else if(overlap>0.5) { |
---|
| 728 | Sortable.mark(dropon, 'before'); |
---|
| 729 | if(dropon.previousSibling != element) { |
---|
| 730 | var oldParentNode = element.parentNode; |
---|
| 731 | element.style.visibility = "hidden"; // fix gecko rendering |
---|
| 732 | dropon.parentNode.insertBefore(element, dropon); |
---|
| 733 | if(dropon.parentNode!=oldParentNode) |
---|
| 734 | Sortable.options(oldParentNode).onChange(element); |
---|
| 735 | Sortable.options(dropon.parentNode).onChange(element); |
---|
| 736 | } |
---|
| 737 | } else { |
---|
| 738 | Sortable.mark(dropon, 'after'); |
---|
| 739 | var nextElement = dropon.nextSibling || null; |
---|
| 740 | if(nextElement != element) { |
---|
| 741 | var oldParentNode = element.parentNode; |
---|
| 742 | element.style.visibility = "hidden"; // fix gecko rendering |
---|
| 743 | dropon.parentNode.insertBefore(element, nextElement); |
---|
| 744 | if(dropon.parentNode!=oldParentNode) |
---|
| 745 | Sortable.options(oldParentNode).onChange(element); |
---|
| 746 | Sortable.options(dropon.parentNode).onChange(element); |
---|
| 747 | } |
---|
| 748 | } |
---|
| 749 | }, |
---|
| 750 | |
---|
| 751 | onEmptyHover: function(element, dropon, overlap) { |
---|
| 752 | var oldParentNode = element.parentNode; |
---|
| 753 | var droponOptions = Sortable.options(dropon); |
---|
| 754 | |
---|
| 755 | if(!Element.isParent(dropon, element)) { |
---|
| 756 | var index; |
---|
| 757 | |
---|
| 758 | var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); |
---|
| 759 | var child = null; |
---|
| 760 | |
---|
| 761 | if(children) { |
---|
| 762 | var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); |
---|
| 763 | |
---|
| 764 | for (index = 0; index < children.length; index += 1) { |
---|
| 765 | if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) { |
---|
| 766 | offset -= Element.offsetSize (children[index], droponOptions.overlap); |
---|
| 767 | } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) { |
---|
| 768 | child = index + 1 < children.length ? children[index + 1] : null; |
---|
| 769 | break; |
---|
| 770 | } else { |
---|
| 771 | child = children[index]; |
---|
| 772 | break; |
---|
| 773 | } |
---|
| 774 | } |
---|
| 775 | } |
---|
| 776 | |
---|
| 777 | dropon.insertBefore(element, child); |
---|
| 778 | |
---|
| 779 | Sortable.options(oldParentNode).onChange(element); |
---|
| 780 | droponOptions.onChange(element); |
---|
| 781 | } |
---|
| 782 | }, |
---|
| 783 | |
---|
| 784 | unmark: function() { |
---|
| 785 | if(Sortable._marker) Sortable._marker.hide(); |
---|
| 786 | }, |
---|
| 787 | |
---|
| 788 | mark: function(dropon, position) { |
---|
| 789 | // mark on ghosting only |
---|
| 790 | var sortable = Sortable.options(dropon.parentNode); |
---|
| 791 | if(sortable && !sortable.ghosting) return; |
---|
| 792 | |
---|
| 793 | if(!Sortable._marker) { |
---|
| 794 | Sortable._marker = |
---|
| 795 | ($('dropmarker') || Element.extend(document.createElement('DIV'))). |
---|
| 796 | hide().addClassName('dropmarker').setStyle({position:'absolute'}); |
---|
| 797 | document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); |
---|
| 798 | } |
---|
| 799 | var offsets = Position.cumulativeOffset(dropon); |
---|
| 800 | Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); |
---|
| 801 | |
---|
| 802 | if(position=='after') |
---|
| 803 | if(sortable.overlap == 'horizontal') |
---|
| 804 | Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); |
---|
| 805 | else |
---|
| 806 | Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); |
---|
| 807 | |
---|
| 808 | Sortable._marker.show(); |
---|
| 809 | }, |
---|
| 810 | |
---|
| 811 | _tree: function(element, options, parent) { |
---|
| 812 | var children = Sortable.findElements(element, options) || []; |
---|
| 813 | |
---|
| 814 | for (var i = 0; i < children.length; ++i) { |
---|
| 815 | var match = children[i].id.match(options.format); |
---|
| 816 | |
---|
| 817 | if (!match) continue; |
---|
| 818 | |
---|
| 819 | var child = { |
---|
| 820 | id: encodeURIComponent(match ? match[1] : null), |
---|
| 821 | element: element, |
---|
| 822 | parent: parent, |
---|
| 823 | children: [], |
---|
| 824 | position: parent.children.length, |
---|
| 825 | container: $(children[i]).down(options.treeTag) |
---|
| 826 | }; |
---|
| 827 | |
---|
| 828 | /* Get the element containing the children and recurse over it */ |
---|
| 829 | if (child.container) |
---|
| 830 | this._tree(child.container, options, child); |
---|
| 831 | |
---|
| 832 | parent.children.push (child); |
---|
| 833 | } |
---|
| 834 | |
---|
| 835 | return parent; |
---|
| 836 | }, |
---|
| 837 | |
---|
| 838 | tree: function(element) { |
---|
| 839 | element = $(element); |
---|
| 840 | var sortableOptions = this.options(element); |
---|
| 841 | var options = Object.extend({ |
---|
| 842 | tag: sortableOptions.tag, |
---|
| 843 | treeTag: sortableOptions.treeTag, |
---|
| 844 | only: sortableOptions.only, |
---|
| 845 | name: element.id, |
---|
| 846 | format: sortableOptions.format |
---|
| 847 | }, arguments[1] || {}); |
---|
| 848 | |
---|
| 849 | var root = { |
---|
| 850 | id: null, |
---|
| 851 | parent: null, |
---|
| 852 | children: [], |
---|
| 853 | container: element, |
---|
| 854 | position: 0 |
---|
| 855 | }; |
---|
| 856 | |
---|
| 857 | return Sortable._tree(element, options, root); |
---|
| 858 | }, |
---|
| 859 | |
---|
| 860 | /* Construct a [i] index for a particular node */ |
---|
| 861 | _constructIndex: function(node) { |
---|
| 862 | var index = ''; |
---|
| 863 | do { |
---|
| 864 | if (node.id) index = '[' + node.position + ']' + index; |
---|
| 865 | } while ((node = node.parent) != null); |
---|
| 866 | return index; |
---|
| 867 | }, |
---|
| 868 | |
---|
| 869 | sequence: function(element) { |
---|
| 870 | element = $(element); |
---|
| 871 | var options = Object.extend(this.options(element), arguments[1] || {}); |
---|
| 872 | |
---|
| 873 | return $(this.findElements(element, options) || []).map( function(item) { |
---|
| 874 | return item.id.match(options.format) ? item.id.match(options.format)[1] : ''; |
---|
| 875 | }); |
---|
| 876 | }, |
---|
| 877 | |
---|
| 878 | setSequence: function(element, new_sequence) { |
---|
| 879 | element = $(element); |
---|
| 880 | var options = Object.extend(this.options(element), arguments[2] || {}); |
---|
| 881 | |
---|
| 882 | var nodeMap = {}; |
---|
| 883 | this.findElements(element, options).each( function(n) { |
---|
| 884 | if (n.id.match(options.format)) |
---|
| 885 | nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode]; |
---|
| 886 | n.parentNode.removeChild(n); |
---|
| 887 | }); |
---|
| 888 | |
---|
| 889 | new_sequence.each(function(ident) { |
---|
| 890 | var n = nodeMap[ident]; |
---|
| 891 | if (n) { |
---|
| 892 | n[1].appendChild(n[0]); |
---|
| 893 | delete nodeMap[ident]; |
---|
| 894 | } |
---|
| 895 | }); |
---|
| 896 | }, |
---|
| 897 | |
---|
| 898 | serialize: function(element) { |
---|
| 899 | element = $(element); |
---|
| 900 | var options = Object.extend(Sortable.options(element), arguments[1] || {}); |
---|
| 901 | var name = encodeURIComponent( |
---|
| 902 | (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); |
---|
| 903 | |
---|
| 904 | if (options.tree) { |
---|
| 905 | return Sortable.tree(element, arguments[1]).children.map( function (item) { |
---|
| 906 | return [name + Sortable._constructIndex(item) + "[id]=" + |
---|
| 907 | encodeURIComponent(item.id)].concat(item.children.map(arguments.callee)); |
---|
| 908 | }).flatten().join('&'); |
---|
| 909 | } else { |
---|
| 910 | return Sortable.sequence(element, arguments[1]).map( function(item) { |
---|
| 911 | return name + "[]=" + encodeURIComponent(item); |
---|
| 912 | }).join('&'); |
---|
| 913 | } |
---|
| 914 | } |
---|
| 915 | }; |
---|
| 916 | |
---|
| 917 | // Returns true if child is contained within element |
---|
| 918 | Element.isParent = function(child, element) { |
---|
| 919 | if (!child.parentNode || child == element) return false; |
---|
| 920 | if (child.parentNode == element) return true; |
---|
| 921 | return Element.isParent(child.parentNode, element); |
---|
| 922 | }; |
---|
| 923 | |
---|
| 924 | Element.findChildren = function(element, only, recursive, tagName) { |
---|
| 925 | if(!element.hasChildNodes()) return null; |
---|
| 926 | tagName = tagName.toUpperCase(); |
---|
| 927 | if(only) only = [only].flatten(); |
---|
| 928 | var elements = []; |
---|
| 929 | $A(element.childNodes).each( function(e) { |
---|
| 930 | if(e.tagName && e.tagName.toUpperCase()==tagName && |
---|
| 931 | (!only || (Element.classNames(e).detect(function(v) { return only.include(v) })))) |
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| 932 | elements.push(e); |
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| 933 | if(recursive) { |
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| 934 | var grandchildren = Element.findChildren(e, only, recursive, tagName); |
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| 935 | if(grandchildren) elements.push(grandchildren); |
---|
| 936 | } |
---|
| 937 | }); |
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| 938 | |
---|
| 939 | return (elements.length>0 ? elements.flatten() : []); |
---|
| 940 | }; |
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| 941 | |
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| 942 | Element.offsetSize = function (element, type) { |
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| 943 | return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; |
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| 944 | }; |
---|