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1 | 2 | alexbesir | // script.aculo.us dragdrop.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009
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2 | |||
3 | // Copyright (c) 2005-2009 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
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4 | //
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5 | // script.aculo.us is freely distributable under the terms of an MIT-style license.
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6 | // For details, see the script.aculo.us web site: http://script.aculo.us/
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7 | |||
8 | if(Object.isUndefined(Effect))
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9 | throw("dragdrop.js requires including script.aculo.us' effects.js library"); |
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10 | |||
11 | var Droppables = {
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12 | drops: [],
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13 | |||
14 | remove: function(element) { |
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15 | this.drops = this.drops.reject(function(d) { return d.element==$(element) }); |
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16 | }, |
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17 | |||
18 | add: function(element) { |
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19 | element = $(element);
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20 | var options = Object.extend({
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21 | greedy: true, |
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22 | hoverclass: null, |
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23 | tree: false |
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24 | }, arguments[1] || { }); |
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25 | |||
26 | // cache containers
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27 | if(options.containment) {
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28 | options._containers = []; |
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29 | var containment = options.containment;
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30 | if(Object.isArray(containment)) {
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31 | containment.each( function(c) { options._containers.push($(c)) }); |
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32 | } else {
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33 | options._containers.push($(containment));
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34 | } |
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35 | } |
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36 | |||
37 | if(options.accept) options.accept = [options.accept].flatten();
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38 | |||
39 | Element.makePositioned(element); // fix IE
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40 | options.element = element; |
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41 | |||
42 | this.drops.push(options);
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43 | }, |
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44 | |||
45 | findDeepestChild: function(drops) { |
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46 | deepest = drops[0];
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47 | |||
48 | for (i = 1; i < drops.length; ++i) |
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49 | if (Element.isParent(drops[i].element, deepest.element))
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50 | deepest = drops[i]; |
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51 | |||
52 | return deepest;
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53 | }, |
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54 | |||
55 | isContained: function(element, drop) { |
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56 | var containmentNode;
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57 | if(drop.tree) {
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58 | containmentNode = element.treeNode; |
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59 | } else {
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60 | containmentNode = element.parentNode; |
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61 | } |
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62 | return drop._containers.detect(function(c) { return containmentNode == c }); |
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63 | }, |
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64 | |||
65 | isAffected: function(point, element, drop) { |
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66 | return (
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67 | (drop.element!=element) && |
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68 | ((!drop._containers) || |
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69 | this.isContained(element, drop)) &&
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70 | ((!drop.accept) || |
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71 | (Element.classNames(element).detect( |
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72 | function(v) { return drop.accept.include(v) } ) )) && |
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73 | Position.within(drop.element, point[0], point[1]) ); |
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74 | }, |
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75 | |||
76 | deactivate: function(drop) { |
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77 | if(drop.hoverclass)
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78 | Element.removeClassName(drop.element, drop.hoverclass); |
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79 | this.last_active = null; |
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80 | }, |
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81 | |||
82 | activate: function(drop) { |
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83 | if(drop.hoverclass)
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84 | Element.addClassName(drop.element, drop.hoverclass); |
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85 | this.last_active = drop;
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86 | }, |
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87 | |||
88 | show: function(point, element) { |
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89 | if(!this.drops.length) return; |
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90 | var drop, affected = [];
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91 | |||
92 | this.drops.each( function(drop) { |
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93 | if(Droppables.isAffected(point, element, drop))
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94 | affected.push(drop); |
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95 | }); |
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96 | |||
97 | if(affected.length>0) |
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98 | drop = Droppables.findDeepestChild(affected); |
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99 | |||
100 | if(this.last_active && this.last_active != drop) this.deactivate(this.last_active); |
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101 | if (drop) {
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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 | |||
106 | if (drop != this.last_active) Droppables.activate(drop); |
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107 | } |
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108 | }, |
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109 | |||
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 | |||
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 | return true; |
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118 | } |
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119 | }, |
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120 | |||
121 | reset: function() { |
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122 | if(this.last_active) |
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123 | this.deactivate(this.last_active); |
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124 | } |
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125 | }; |
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126 | |||
127 | var Draggables = {
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128 | drags: [],
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129 | observers: [],
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130 | |||
131 | register: function(draggable) { |
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132 | if(this.drags.length == 0) { |
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133 | this.eventMouseUp = this.endDrag.bindAsEventListener(this); |
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134 | this.eventMouseMove = this.updateDrag.bindAsEventListener(this); |
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135 | this.eventKeypress = this.keyPress.bindAsEventListener(this); |
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136 | |||
137 | Event.observe(document, "mouseup", this.eventMouseUp); |
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138 | Event.observe(document, "mousemove", this.eventMouseMove); |
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139 | Event.observe(document, "keypress", this.eventKeypress); |
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140 | } |
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141 | this.drags.push(draggable);
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142 | }, |
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143 | |||
144 | unregister: function(draggable) { |
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145 | this.drags = this.drags.reject(function(d) { return d==draggable }); |
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146 | if(this.drags.length == 0) { |
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147 | Event.stopObserving(document, "mouseup", this.eventMouseUp); |
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148 | Event.stopObserving(document, "mousemove", this.eventMouseMove); |
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149 | Event.stopObserving(document, "keypress", this.eventKeypress); |
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150 | } |
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151 | }, |
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152 | |||
153 | activate: function(draggable) { |
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154 | if(draggable.options.delay) {
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155 | this._timeout = setTimeout(function() { |
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156 | Draggables._timeout = null;
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157 | window.focus(); |
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158 | Draggables.activeDraggable = draggable; |
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159 | }.bind(this), draggable.options.delay);
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160 | } else {
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161 | window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
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162 | this.activeDraggable = draggable;
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163 | } |
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164 | }, |
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165 | |||
166 | deactivate: function() { |
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167 | this.activeDraggable = null; |
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168 | }, |
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169 | |||
170 | updateDrag: function(event) { |
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171 | if(!this.activeDraggable) return; |
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172 | var pointer = [Event.pointerX(event), Event.pointerY(event)];
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173 | // Mozilla-based browsers fire successive mousemove events with
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174 | // the same coordinates, prevent needless redrawing (moz bug?)
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175 | if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return; |
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176 | this._lastPointer = pointer;
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177 | |||
178 | this.activeDraggable.updateDrag(event, pointer);
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179 | }, |
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180 | |||
181 | endDrag: function(event) { |
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182 | if(this._timeout) { |
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183 | clearTimeout(this._timeout);
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184 | this._timeout = null; |
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185 | } |
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186 | if(!this.activeDraggable) return; |
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187 | this._lastPointer = null; |
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188 | this.activeDraggable.endDrag(event);
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189 | this.activeDraggable = null; |
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190 | }, |
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191 | |||
192 | keyPress: function(event) { |
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193 | if(this.activeDraggable) |
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194 | this.activeDraggable.keyPress(event);
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195 | }, |
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196 | |||
197 | addObserver: function(observer) { |
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198 | this.observers.push(observer);
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199 | this._cacheObserverCallbacks();
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200 | }, |
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201 | |||
202 | removeObserver: function(element) { // element instead of observer fixes mem leaks |
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203 | this.observers = this.observers.reject( function(o) { return o.element==element }); |
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204 | this._cacheObserverCallbacks();
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205 | }, |
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206 | |||
207 | notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag' |
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208 | if(this[eventName+'Count'] > 0) |
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209 | this.observers.each( function(o) { |
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210 | if(o[eventName]) o[eventName](eventName, draggable, event);
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211 | }); |
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212 | if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
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213 | }, |
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214 | |||
215 | _cacheObserverCallbacks: function() { |
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216 | ['onStart','onEnd','onDrag'].each( function(eventName) { |
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217 | Draggables[eventName+'Count'] = Draggables.observers.select(
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218 | function(o) { return o[eventName]; } |
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219 | ).length; |
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220 | }); |
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221 | } |
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222 | }; |
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223 | |||
224 | /*--------------------------------------------------------------------------*/
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225 | |||
226 | var Draggable = Class.create({
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227 | initialize: function(element) { |
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228 | var defaults = {
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229 | handle: false, |
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230 | reverteffect: function(element, top_offset, left_offset) { |
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231 | var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02; |
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232 | new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur, |
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233 | queue: {scope:'_draggable', position:'end'} |
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234 | }); |
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235 | }, |
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236 | endeffect: function(element) { |
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237 | var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0; |
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238 | new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, |
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239 | queue: {scope:'_draggable', position:'end'}, |
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240 | afterFinish: function(){ |
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241 | Draggable._dragging[element] = false
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242 | } |
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243 | }); |
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244 | }, |
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245 | zindex: 1000, |
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246 | revert: false, |
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247 | quiet: 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 | |||
255 | if(!arguments[1] || Object.isUndefined(arguments[1].endeffect)) |
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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 | |||
264 | var options = Object.extend(defaults, arguments[1] || { }); |
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265 | |||
266 | this.element = $(element); |
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267 | |||
268 | if(options.handle && Object.isString(options.handle))
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269 | this.handle = this.element.down('.'+options.handle, 0); |
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270 | |||
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 | |||
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 | |||
279 | Element.makePositioned(this.element); // fix IE |
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280 | |||
281 | this.options = options;
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282 | this.dragging = false; |
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283 | |||
284 | this.eventMouseDown = this.initDrag.bindAsEventListener(this); |
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285 | Event.observe(this.handle, "mousedown", this.eventMouseDown); |
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286 | |||
287 | Draggables.register(this);
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288 | }, |
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289 | |||
290 | destroy: function() { |
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291 | Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); |
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292 | Draggables.unregister(this);
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293 | }, |
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294 | |||
295 | currentDelta: function() { |
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296 | return([
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297 | parseInt(Element.getStyle(this.element,'left') || '0'), |
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298 | parseInt(Element.getStyle(this.element,'top') || '0')]); |
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299 | }, |
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300 | |||
301 | initDrag: function(event) { |
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302 | if(!Object.isUndefined(Draggable._dragging[this.element]) && |
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303 | Draggable._dragging[this.element]) return; |
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304 | if(Event.isLeftClick(event)) {
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305 | // abort on form elements, fixes a Firefox issue
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306 | var src = Event.element(event);
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307 | if((tag_name = src.tagName.toUpperCase()) && (
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308 | tag_name=='INPUT' ||
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309 | tag_name=='SELECT' ||
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310 | tag_name=='OPTION' ||
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311 | tag_name=='BUTTON' ||
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312 | tag_name=='TEXTAREA')) return; |
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313 | |||
314 | var pointer = [Event.pointerX(event), Event.pointerY(event)];
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315 | var pos = this.element.cumulativeOffset(); |
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316 | this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) }); |
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317 | |||
318 | Draggables.activate(this);
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319 | Event.stop(event); |
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320 | } |
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321 | }, |
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322 | |||
323 | startDrag: function(event) { |
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324 | this.dragging = true; |
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325 | if(!this.delta) |
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326 | this.delta = this.currentDelta(); |
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327 | |||
328 | if(this.options.zindex) { |
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329 | this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); |
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330 | this.element.style.zIndex = this.options.zindex; |
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331 | } |
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332 | |||
333 | if(this.options.ghosting) { |
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334 | this._clone = this.element.cloneNode(true); |
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335 | this._originallyAbsolute = (this.element.getStyle('position') == 'absolute'); |
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336 | if (!this._originallyAbsolute) |
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337 | Position.absolutize(this.element);
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338 | this.element.parentNode.insertBefore(this._clone, this.element); |
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339 | } |
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340 | |||
341 | if(this.options.scroll) { |
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342 | if (this.options.scroll == window) { |
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343 | var where = this._getWindowScroll(this.options.scroll); |
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344 | this.originalScrollLeft = where.left;
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345 | this.originalScrollTop = where.top;
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346 | } else {
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347 | this.originalScrollLeft = this.options.scroll.scrollLeft; |
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348 | this.originalScrollTop = this.options.scroll.scrollTop; |
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349 | } |
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350 | } |
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351 | |||
352 | Draggables.notify('onStart', this, event); |
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353 | |||
354 | if(this.options.starteffect) this.options.starteffect(this.element); |
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355 | }, |
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356 | |||
357 | updateDrag: function(event, pointer) { |
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358 | if(!this.dragging) this.startDrag(event); |
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359 | |||
360 | if(!this.options.quiet){ |
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361 | Position.prepare(); |
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362 | Droppables.show(pointer, this.element);
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363 | } |
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364 | |||
365 | Draggables.notify('onDrag', this, event); |
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366 | |||
367 | this.draw(pointer);
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368 | if(this.options.change) this.options.change(this); |
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369 | |||
370 | if(this.options.scroll) { |
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371 | this.stopScrolling();
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372 | |||
373 | var p;
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374 | if (this.options.scroll == window) { |
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375 | with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; } |
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376 | } else {
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377 | p = Position.page(this.options.scroll);
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378 | p[0] += this.options.scroll.scrollLeft + Position.deltaX; |
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379 | p[1] += this.options.scroll.scrollTop + Position.deltaY; |
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380 | p.push(p[0]+this.options.scroll.offsetWidth); |
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381 | p.push(p[1]+this.options.scroll.offsetHeight); |
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382 | } |
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383 | var speed = [0,0]; |
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384 | if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity); |
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385 | if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity); |
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386 | if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity); |
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387 | if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity); |
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388 | this.startScrolling(speed);
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389 | } |
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390 | |||
391 | // fix AppleWebKit rendering
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392 | if(Prototype.Browser.WebKit) window.scrollBy(0,0); |
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393 | |||
394 | Event.stop(event); |
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395 | }, |
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396 | |||
397 | finishDrag: function(event, success) { |
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398 | this.dragging = false; |
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399 | |||
400 | if(this.options.quiet){ |
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401 | Position.prepare(); |
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402 | var pointer = [Event.pointerX(event), Event.pointerY(event)];
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403 | Droppables.show(pointer, this.element);
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404 | } |
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405 | |||
406 | if(this.options.ghosting) { |
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407 | if (!this._originallyAbsolute) |
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408 | Position.relativize(this.element);
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409 | delete this._originallyAbsolute; |
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410 | Element.remove(this._clone);
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411 | this._clone = null; |
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412 | } |
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413 | |||
414 | var dropped = false; |
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415 | if(success) {
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416 | dropped = Droppables.fire(event, this.element);
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417 | if (!dropped) dropped = false; |
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418 | } |
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419 | if(dropped && this.options.onDropped) this.options.onDropped(this.element); |
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420 | Draggables.notify('onEnd', this, event); |
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421 | |||
422 | var revert = this.options.revert; |
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423 | if(revert && Object.isFunction(revert)) revert = revert(this.element); |
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424 | |||
425 | var d = this.currentDelta(); |
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426 | if(revert && this.options.reverteffect) { |
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427 | if (dropped == 0 || revert != 'failure') |
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428 | this.options.reverteffect(this.element, |
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429 | d[1]-this.delta[1], d[0]-this.delta[0]); |
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430 | } else {
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431 | this.delta = d;
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432 | } |
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433 | |||
434 | if(this.options.zindex) |
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435 | this.element.style.zIndex = this.originalZ; |
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436 | |||
437 | if(this.options.endeffect) |
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438 | this.options.endeffect(this.element); |
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439 | |||
440 | Draggables.deactivate(this);
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441 | Droppables.reset(); |
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442 | }, |
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443 | |||
444 | keyPress: function(event) { |
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445 | if(event.keyCode!=Event.KEY_ESC) return; |
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446 | this.finishDrag(event, false); |
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447 | Event.stop(event); |
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448 | }, |
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449 | |||
450 | endDrag: function(event) { |
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451 | if(!this.dragging) return; |
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452 | this.stopScrolling();
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453 | this.finishDrag(event, true); |
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454 | Event.stop(event); |
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455 | }, |
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456 | |||
457 | draw: function(point) { |
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458 | var pos = this.element.cumulativeOffset(); |
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459 | if(this.options.ghosting) { |
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460 | var r = Position.realOffset(this.element); |
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461 | pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; |
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462 | } |
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463 | |||
464 | var d = this.currentDelta(); |
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465 | pos[0] -= d[0]; pos[1] -= d[1]; |
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466 | |||
467 | if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) { |
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468 | pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft; |
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469 | pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop; |
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470 | } |
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471 | |||
472 | var p = [0,1].map(function(i){ |
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473 | return (point[i]-pos[i]-this.offset[i]) |
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474 | }.bind(this));
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475 | |||
476 | if(this.options.snap) { |
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477 | if(Object.isFunction(this.options.snap)) { |
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478 | p = this.options.snap(p[0],p[1],this); |
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479 | } else {
|
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480 | if(Object.isArray(this.options.snap)) { |
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481 | p = p.map( function(v, i) {
|
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482 | return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this)); |
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483 | } else {
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484 | p = p.map( function(v) {
|
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485 | return (v/this.options.snap).round()*this.options.snap }.bind(this)); |
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486 | } |
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487 | }} |
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488 | |||
489 | var style = this.element.style; |
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490 | if((!this.options.constraint) || (this.options.constraint=='horizontal')) |
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491 | style.left = p[0] + "px"; |
||
492 | if((!this.options.constraint) || (this.options.constraint=='vertical')) |
||
493 | style.top = p[1] + "px"; |
||
494 | |||
495 | if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering |
||
496 | }, |
||
497 | |||
498 | stopScrolling: function() { |
||
499 | if(this.scrollInterval) { |
||
500 | clearInterval(this.scrollInterval);
|
||
501 | this.scrollInterval = null; |
||
502 | Draggables._lastScrollPointer = null;
|
||
503 | } |
||
504 | }, |
||
505 | |||
506 | startScrolling: function(speed) { |
||
507 | if(!(speed[0] || speed[1])) return; |
||
508 | this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed]; |
||
509 | this.lastScrolled = new Date(); |
||
510 | this.scrollInterval = setInterval(this.scroll.bind(this), 10); |
||
511 | }, |
||
512 | |||
513 | scroll: function() { |
||
514 | var current = new Date(); |
||
515 | var delta = current - this.lastScrolled; |
||
516 | this.lastScrolled = current;
|
||
517 | if(this.options.scroll == window) { |
||
518 | with (this._getWindowScroll(this.options.scroll)) { |
||
519 | if (this.scrollSpeed[0] || this.scrollSpeed[1]) { |
||
520 | var d = delta / 1000; |
||
521 | this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] ); |
||
522 | } |
||
523 | } |
||
524 | } else {
|
||
525 | this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000; |
||
526 | this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000; |
||
527 | } |
||
528 | |||
529 | Position.prepare(); |
||
530 | Droppables.show(Draggables._lastPointer, this.element);
|
||
531 | Draggables.notify('onDrag', this); |
||
532 | if (this._isScrollChild) { |
||
533 | Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
|
||
534 | Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000; |
||
535 | Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000; |
||
536 | if (Draggables._lastScrollPointer[0] < 0) |
||
537 | Draggables._lastScrollPointer[0] = 0; |
||
538 | if (Draggables._lastScrollPointer[1] < 0) |
||
539 | Draggables._lastScrollPointer[1] = 0; |
||
540 | this.draw(Draggables._lastScrollPointer);
|
||
541 | } |
||
542 | |||
543 | if(this.options.change) this.options.change(this); |
||
544 | }, |
||
545 | |||
546 | _getWindowScroll: function(w) { |
||
547 | var T, L, W, H;
|
||
548 | with (w.document) {
|
||
549 | if (w.document.documentElement && documentElement.scrollTop) {
|
||
550 | T = documentElement.scrollTop; |
||
551 | L = documentElement.scrollLeft; |
||
552 | } else if (w.document.body) { |
||
553 | T = body.scrollTop; |
||
554 | L = body.scrollLeft; |
||
555 | } |
||
556 | if (w.innerWidth) {
|
||
557 | W = w.innerWidth; |
||
558 | H = w.innerHeight; |
||
559 | } else if (w.document.documentElement && documentElement.clientWidth) { |
||
560 | W = documentElement.clientWidth; |
||
561 | H = documentElement.clientHeight; |
||
562 | } else {
|
||
563 | W = body.offsetWidth; |
||
564 | H = body.offsetHeight; |
||
565 | } |
||
566 | } |
||
567 | return { top: T, left: L, width: W, height: H }; |
||
568 | } |
||
569 | }); |
||
570 | |||
571 | Draggable._dragging = { }; |
||
572 | |||
573 | /*--------------------------------------------------------------------------*/
|
||
574 | |||
575 | var SortableObserver = Class.create({
|
||
576 | initialize: function(element, observer) { |
||
577 | this.element = $(element); |
||
578 | this.observer = observer;
|
||
579 | this.lastValue = Sortable.serialize(this.element); |
||
580 | }, |
||
581 | |||
582 | onStart: function() { |
||
583 | this.lastValue = Sortable.serialize(this.element); |
||
584 | }, |
||
585 | |||
586 | onEnd: function() { |
||
587 | Sortable.unmark(); |
||
588 | if(this.lastValue != Sortable.serialize(this.element)) |
||
589 | this.observer(this.element) |
||
590 | } |
||
591 | }); |
||
592 | |||
593 | var Sortable = {
|
||
594 | SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, |
||
595 | |||
596 | sortables: { },
|
||
597 | |||
598 | _findRootElement: function(element) { |
||
599 | while (element.tagName.toUpperCase() != "BODY") { |
||
600 | if(element.id && Sortable.sortables[element.id]) return element; |
||
601 | element = element.parentNode; |
||
602 | } |
||
603 | }, |
||
604 | |||
605 | options: function(element) { |
||
606 | element = Sortable._findRootElement($(element));
|
||
607 | if(!element) return; |
||
608 | return Sortable.sortables[element.id];
|
||
609 | }, |
||
610 | |||
611 | destroy: function(element){ |
||
612 | element = $(element);
|
||
613 | var s = Sortable.sortables[element.id];
|
||
614 | |||
615 | if(s) {
|
||
616 | Draggables.removeObserver(s.element); |
||
617 | s.droppables.each(function(d){ Droppables.remove(d) });
|
||
618 | s.draggables.invoke('destroy');
|
||
619 | |||
620 | delete Sortable.sortables[s.element.id];
|
||
621 | } |
||
622 | }, |
||
623 | |||
624 | create: function(element) { |
||
625 | element = $(element);
|
||
626 | var options = Object.extend({
|
||
627 | element: element,
|
||
628 | tag: 'li', // assumes li children, override with tag: 'tagname' |
||
629 | dropOnEmpty: false, |
||
630 | tree: false, |
||
631 | treeTag: 'ul', |
||
632 | overlap: 'vertical', // one of 'vertical', 'horizontal' |
||
633 | constraint: 'vertical', // one of 'vertical', 'horizontal', false |
||
634 | containment: element, // also takes array of elements (or id's); or false |
||
635 | handle: false, // or a CSS class |
||
636 | only: false, |
||
637 | delay: 0, |
||
638 | hoverclass: null, |
||
639 | ghosting: false, |
||
640 | quiet: false, |
||
641 | scroll: false, |
||
642 | scrollSensitivity: 20, |
||
643 | scrollSpeed: 15, |
||
644 | format: this.SERIALIZE_RULE, |
||
645 | |||
646 | // these take arrays of elements or ids and can be
|
||
647 | // used for better initialization performance
|
||
648 | elements: false, |
||
649 | handles: false, |
||
650 | |||
651 | onChange: Prototype.emptyFunction,
|
||
652 | onUpdate: Prototype.emptyFunction
|
||
653 | }, arguments[1] || { }); |
||
654 | |||
655 | // clear any old sortable with same element
|
||
656 | this.destroy(element);
|
||
657 | |||
658 | // build options for the draggables
|
||
659 | var options_for_draggable = {
|
||
660 | revert: true, |
||
661 | quiet: options.quiet,
|
||
662 | scroll: options.scroll,
|
||
663 | scrollSpeed: options.scrollSpeed,
|
||
664 | scrollSensitivity: options.scrollSensitivity,
|
||
665 | delay: options.delay,
|
||
666 | ghosting: options.ghosting,
|
||
667 | constraint: options.constraint,
|
||
668 | handle: options.handle };
|
||
669 | |||
670 | if(options.starteffect)
|
||
671 | options_for_draggable.starteffect = options.starteffect; |
||
672 | |||
673 | if(options.reverteffect)
|
||
674 | options_for_draggable.reverteffect = options.reverteffect; |
||
675 | else
|
||
676 | if(options.ghosting) options_for_draggable.reverteffect = function(element) { |
||
677 | element.style.top = 0;
|
||
678 | element.style.left = 0;
|
||
679 | }; |
||
680 | |||
681 | if(options.endeffect)
|
||
682 | options_for_draggable.endeffect = options.endeffect; |
||
683 | |||
684 | if(options.zindex)
|
||
685 | options_for_draggable.zindex = options.zindex; |
||
686 | |||
687 | // build options for the droppables
|
||
688 | var options_for_droppable = {
|
||
689 | overlap: options.overlap,
|
||
690 | containment: options.containment,
|
||
691 | tree: options.tree,
|
||
692 | hoverclass: options.hoverclass,
|
||
693 | onHover: Sortable.onHover
|
||
694 | }; |
||
695 | |||
696 | var options_for_tree = {
|
||
697 | onHover: Sortable.onEmptyHover,
|
||
698 | overlap: options.overlap,
|
||
699 | containment: options.containment,
|
||
700 | hoverclass: options.hoverclass
|
||
701 | }; |
||
702 | |||
703 | // fix for gecko engine
|
||
704 | Element.cleanWhitespace(element); |
||
705 | |||
706 | options.draggables = []; |
||
707 | options.droppables = []; |
||
708 | |||
709 | // drop on empty handling
|
||
710 | if(options.dropOnEmpty || options.tree) {
|
||
711 | Droppables.add(element, options_for_tree); |
||
712 | options.droppables.push(element); |
||
713 | } |
||
714 | |||
715 | (options.elements || this.findElements(element, options) || []).each( function(e,i) { |
||
716 | var handle = options.handles ? $(options.handles[i]) : |
||
717 | (options.handle ? $(e).select('.' + options.handle)[0] : e); |
||
718 | options.draggables.push( |
||
719 | new Draggable(e, Object.extend(options_for_draggable, { handle: handle }))); |
||
720 | Droppables.add(e, options_for_droppable); |
||
721 | if(options.tree) e.treeNode = element;
|
||
722 | options.droppables.push(e); |
||
723 | }); |
||
724 | |||
725 | if(options.tree) {
|
||
726 | (Sortable.findTreeElements(element, options) || []).each( function(e) {
|
||
727 | Droppables.add(e, options_for_tree); |
||
728 | e.treeNode = element; |
||
729 | options.droppables.push(e); |
||
730 | }); |
||
731 | } |
||
732 | |||
733 | // keep reference
|
||
734 | this.sortables[element.identify()] = options;
|
||
735 | |||
736 | // for onupdate
|
||
737 | Draggables.addObserver(new SortableObserver(element, options.onUpdate));
|
||
738 | |||
739 | }, |
||
740 | |||
741 | // return all suitable-for-sortable elements in a guaranteed order
|
||
742 | findElements: function(element, options) { |
||
743 | return Element.findChildren(
|
||
744 | element, options.only, options.tree ? true : false, options.tag); |
||
745 | }, |
||
746 | |||
747 | findTreeElements: function(element, options) { |
||
748 | return Element.findChildren(
|
||
749 | element, options.only, options.tree ? true : false, options.treeTag); |
||
750 | }, |
||
751 | |||
752 | onHover: function(element, dropon, overlap) { |
||
753 | if(Element.isParent(dropon, element)) return; |
||
754 | |||
755 | if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) { |
||
756 | return;
|
||
757 | } else if(overlap>0.5) { |
||
758 | Sortable.mark(dropon, 'before');
|
||
759 | if(dropon.previousSibling != element) {
|
||
760 | var oldParentNode = element.parentNode;
|
||
761 | element.style.visibility = "hidden"; // fix gecko rendering |
||
762 | dropon.parentNode.insertBefore(element, dropon); |
||
763 | if(dropon.parentNode!=oldParentNode)
|
||
764 | Sortable.options(oldParentNode).onChange(element); |
||
765 | Sortable.options(dropon.parentNode).onChange(element); |
||
766 | } |
||
767 | } else {
|
||
768 | Sortable.mark(dropon, 'after');
|
||
769 | var nextElement = dropon.nextSibling || null; |
||
770 | if(nextElement != element) {
|
||
771 | var oldParentNode = element.parentNode;
|
||
772 | element.style.visibility = "hidden"; // fix gecko rendering |
||
773 | dropon.parentNode.insertBefore(element, nextElement); |
||
774 | if(dropon.parentNode!=oldParentNode)
|
||
775 | Sortable.options(oldParentNode).onChange(element); |
||
776 | Sortable.options(dropon.parentNode).onChange(element); |
||
777 | } |
||
778 | } |
||
779 | }, |
||
780 | |||
781 | onEmptyHover: function(element, dropon, overlap) { |
||
782 | var oldParentNode = element.parentNode;
|
||
783 | var droponOptions = Sortable.options(dropon);
|
||
784 | |||
785 | if(!Element.isParent(dropon, element)) {
|
||
786 | var index;
|
||
787 | |||
788 | var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); |
||
789 | var child = null; |
||
790 | |||
791 | if(children) {
|
||
792 | var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); |
||
793 | |||
794 | for (index = 0; index < children.length; index += 1) { |
||
795 | if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) { |
||
796 | offset -= Element.offsetSize (children[index], droponOptions.overlap); |
||
797 | } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) { |
||
798 | child = index + 1 < children.length ? children[index + 1] : null; |
||
799 | break;
|
||
800 | } else {
|
||
801 | child = children[index]; |
||
802 | break;
|
||
803 | } |
||
804 | } |
||
805 | } |
||
806 | |||
807 | dropon.insertBefore(element, child); |
||
808 | |||
809 | Sortable.options(oldParentNode).onChange(element); |
||
810 | droponOptions.onChange(element); |
||
811 | } |
||
812 | }, |
||
813 | |||
814 | unmark: function() { |
||
815 | if(Sortable._marker) Sortable._marker.hide();
|
||
816 | }, |
||
817 | |||
818 | mark: function(dropon, position) { |
||
819 | // mark on ghosting only
|
||
820 | var sortable = Sortable.options(dropon.parentNode);
|
||
821 | if(sortable && !sortable.ghosting) return; |
||
822 | |||
823 | if(!Sortable._marker) {
|
||
824 | Sortable._marker = |
||
825 | ($('dropmarker') || Element.extend(document.createElement('DIV'))). |
||
826 | hide().addClassName('dropmarker').setStyle({position:'absolute'}); |
||
827 | document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); |
||
828 | } |
||
829 | var offsets = dropon.cumulativeOffset();
|
||
830 | Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); |
||
831 | |||
832 | if(position=='after') |
||
833 | if(sortable.overlap == 'horizontal') |
||
834 | Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); |
||
835 | else
|
||
836 | Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); |
||
837 | |||
838 | Sortable._marker.show(); |
||
839 | }, |
||
840 | |||
841 | _tree: function(element, options, parent) { |
||
842 | var children = Sortable.findElements(element, options) || [];
|
||
843 | |||
844 | for (var i = 0; i < children.length; ++i) { |
||
845 | var match = children[i].id.match(options.format);
|
||
846 | |||
847 | if (!match) continue; |
||
848 | |||
849 | var child = {
|
||
850 | id: encodeURIComponent(match ? match[1] : null), |
||
851 | element: element,
|
||
852 | parent: parent,
|
||
853 | children: [],
|
||
854 | position: parent.children.length,
|
||
855 | container: $(children[i]).down(options.treeTag) |
||
856 | }; |
||
857 | |||
858 | /* Get the element containing the children and recurse over it */
|
||
859 | if (child.container)
|
||
860 | this._tree(child.container, options, child);
|
||
861 | |||
862 | parent.children.push (child); |
||
863 | } |
||
864 | |||
865 | return parent;
|
||
866 | }, |
||
867 | |||
868 | tree: function(element) { |
||
869 | element = $(element);
|
||
870 | var sortableOptions = this.options(element); |
||
871 | var options = Object.extend({
|
||
872 | tag: sortableOptions.tag,
|
||
873 | treeTag: sortableOptions.treeTag,
|
||
874 | only: sortableOptions.only,
|
||
875 | name: element.id,
|
||
876 | format: sortableOptions.format
|
||
877 | }, arguments[1] || { }); |
||
878 | |||
879 | var root = {
|
||
880 | id: null, |
||
881 | parent: null, |
||
882 | children: [],
|
||
883 | container: element,
|
||
884 | position: 0 |
||
885 | }; |
||
886 | |||
887 | return Sortable._tree(element, options, root);
|
||
888 | }, |
||
889 | |||
890 | /* Construct a [i] index for a particular node */
|
||
891 | _constructIndex: function(node) { |
||
892 | var index = ''; |
||
893 | do {
|
||
894 | if (node.id) index = '[' + node.position + ']' + index; |
||
895 | } while ((node = node.parent) != null); |
||
896 | return index;
|
||
897 | }, |
||
898 | |||
899 | sequence: function(element) { |
||
900 | element = $(element);
|
||
901 | var options = Object.extend(this.options(element), arguments[1] || { }); |
||
902 | |||
903 | return $(this.findElements(element, options) || []).map( function(item) { |
||
904 | return item.id.match(options.format) ? item.id.match(options.format)[1] : ''; |
||
905 | }); |
||
906 | }, |
||
907 | |||
908 | setSequence: function(element, new_sequence) { |
||
909 | element = $(element);
|
||
910 | var options = Object.extend(this.options(element), arguments[2] || { }); |
||
911 | |||
912 | var nodeMap = { };
|
||
913 | this.findElements(element, options).each( function(n) { |
||
914 | if (n.id.match(options.format))
|
||
915 | nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
|
||
916 | n.parentNode.removeChild(n); |
||
917 | }); |
||
918 | |||
919 | new_sequence.each(function(ident) {
|
||
920 | var n = nodeMap[ident];
|
||
921 | if (n) {
|
||
922 | n[1].appendChild(n[0]); |
||
923 | delete nodeMap[ident];
|
||
924 | } |
||
925 | }); |
||
926 | }, |
||
927 | |||
928 | serialize: function(element) { |
||
929 | element = $(element);
|
||
930 | var options = Object.extend(Sortable.options(element), arguments[1] || { }); |
||
931 | var name = encodeURIComponent(
|
||
932 | (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); |
||
933 | |||
934 | if (options.tree) {
|
||
935 | return Sortable.tree(element, arguments[1]).children.map( function (item) { |
||
936 | return [name + Sortable._constructIndex(item) + "[id]=" + |
||
937 | encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
|
||
938 | }).flatten().join('&');
|
||
939 | } else {
|
||
940 | return Sortable.sequence(element, arguments[1]).map( function(item) { |
||
941 | return name + "[]=" + encodeURIComponent(item); |
||
942 | }).join('&');
|
||
943 | } |
||
944 | } |
||
945 | }; |
||
946 | |||
947 | // Returns true if child is contained within element
|
||
948 | Element.isParent = function(child, element) { |
||
949 | if (!child.parentNode || child == element) return false; |
||
950 | if (child.parentNode == element) return true; |
||
951 | return Element.isParent(child.parentNode, element);
|
||
952 | }; |
||
953 | |||
954 | Element.findChildren = function(element, only, recursive, tagName) { |
||
955 | if(!element.hasChildNodes()) return null; |
||
956 | tagName = tagName.toUpperCase(); |
||
957 | if(only) only = [only].flatten();
|
||
958 | var elements = [];
|
||
959 | $A(element.childNodes).each( function(e) { |
||
960 | if(e.tagName && e.tagName.toUpperCase()==tagName &&
|
||
961 | (!only || (Element.classNames(e).detect(function(v) { return only.include(v) })))) |
||
962 | elements.push(e); |
||
963 | if(recursive) {
|
||
964 | var grandchildren = Element.findChildren(e, only, recursive, tagName);
|
||
965 | if(grandchildren) elements.push(grandchildren);
|
||
966 | } |
||
967 | }); |
||
968 | |||
969 | return (elements.length>0 ? elements.flatten() : []); |
||
970 | }; |
||
971 | |||
972 | Element.offsetSize = function (element, type) { |
||
973 | return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; |
||
974 | }; |