1 | // script.aculo.us dragdrop.js v1.8.2, Tue Nov 18 18:30:58 +0100 2008 |
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2 | |
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3 | // Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) |
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4 | // (c) 2005-2008 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(Object.isUndefined(Effect)) |
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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 = $(element); |
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21 | var options = Object.extend({ |
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22 | greedy: true, |
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23 | hoverclass: null, |
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24 | tree: false |
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25 | }, arguments[1] || { }); |
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26 | |
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27 | // cache containers |
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28 | if(options.containment) { |
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29 | options._containers = []; |
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30 | var containment = options.containment; |
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31 | if(Object.isArray(containment)) { |
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32 | containment.each( function(c) { options._containers.push($(c)) }); |
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33 | } else { |
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34 | options._containers.push($(containment)); |
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35 | } |
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36 | } |
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37 | |
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38 | if(options.accept) options.accept = [options.accept].flatten(); |
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39 | |
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40 | Element.makePositioned(element); // fix IE |
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41 | options.element = element; |
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42 | |
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43 | this.drops.push(options); |
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44 | }, |
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45 | |
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46 | findDeepestChild: function(drops) { |
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47 | deepest = drops[0]; |
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48 | |
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49 | for (i = 1; i < drops.length; ++i) |
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50 | if (Element.isParent(drops[i].element, deepest.element)) |
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51 | deepest = drops[i]; |
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52 | |
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53 | return deepest; |
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54 | }, |
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55 | |
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56 | isContained: function(element, drop) { |
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57 | var containmentNode; |
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58 | if(drop.tree) { |
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59 | containmentNode = element.treeNode; |
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60 | } else { |
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61 | containmentNode = element.parentNode; |
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62 | } |
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63 | return drop._containers.detect(function(c) { return containmentNode == c }); |
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64 | }, |
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65 | |
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66 | isAffected: function(point, element, drop) { |
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67 | return ( |
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68 | (drop.element!=element) && |
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69 | ((!drop._containers) || |
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70 | this.isContained(element, drop)) && |
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71 | ((!drop.accept) || |
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72 | (Element.classNames(element).detect( |
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73 | function(v) { return drop.accept.include(v) } ) )) && |
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74 | Position.within(drop.element, point[0], point[1]) ); |
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75 | }, |
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76 | |
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77 | deactivate: function(drop) { |
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78 | if(drop.hoverclass) |
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79 | Element.removeClassName(drop.element, drop.hoverclass); |
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80 | this.last_active = null; |
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81 | }, |
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82 | |
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83 | activate: function(drop) { |
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84 | if(drop.hoverclass) |
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85 | Element.addClassName(drop.element, drop.hoverclass); |
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86 | this.last_active = drop; |
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87 | }, |
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88 | |
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89 | show: function(point, element) { |
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90 | if(!this.drops.length) return; |
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91 | var drop, affected = []; |
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92 | |
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93 | this.drops.each( function(drop) { |
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94 | if(Droppables.isAffected(point, element, drop)) |
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95 | affected.push(drop); |
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96 | }); |
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97 | |
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98 | if(affected.length>0) |
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99 | drop = Droppables.findDeepestChild(affected); |
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100 | |
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101 | if(this.last_active && this.last_active != drop) this.deactivate(this.last_active); |
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102 | if (drop) { |
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103 | Position.within(drop.element, point[0], point[1]); |
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104 | if(drop.onHover) |
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105 | drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); |
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106 | |
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107 | if (drop != this.last_active) Droppables.activate(drop); |
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108 | } |
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109 | }, |
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110 | |
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111 | fire: function(event, element) { |
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112 | if(!this.last_active) return; |
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113 | Position.prepare(); |
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114 | |
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115 | if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active)) |
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116 | if (this.last_active.onDrop) { |
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117 | this.last_active.onDrop(element, this.last_active.element, event); |
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118 | return true; |
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119 | } |
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120 | }, |
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121 | |
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122 | reset: function() { |
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123 | if(this.last_active) |
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124 | this.deactivate(this.last_active); |
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125 | } |
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126 | }; |
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127 | |
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128 | var Draggables = { |
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129 | drags: [], |
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130 | observers: [], |
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131 | |
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132 | register: function(draggable) { |
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133 | if(this.drags.length == 0) { |
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134 | this.eventMouseUp = this.endDrag.bindAsEventListener(this); |
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135 | this.eventMouseMove = this.updateDrag.bindAsEventListener(this); |
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136 | this.eventKeypress = this.keyPress.bindAsEventListener(this); |
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137 | |
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138 | Event.observe(document, "mouseup", this.eventMouseUp); |
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139 | Event.observe(document, "mousemove", this.eventMouseMove); |
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140 | Event.observe(document, "keypress", this.eventKeypress); |
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141 | } |
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142 | this.drags.push(draggable); |
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143 | }, |
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144 | |
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145 | unregister: function(draggable) { |
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146 | this.drags = this.drags.reject(function(d) { return d==draggable }); |
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147 | if(this.drags.length == 0) { |
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148 | Event.stopObserving(document, "mouseup", this.eventMouseUp); |
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149 | Event.stopObserving(document, "mousemove", this.eventMouseMove); |
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150 | Event.stopObserving(document, "keypress", this.eventKeypress); |
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151 | } |
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152 | }, |
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153 | |
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154 | activate: function(draggable) { |
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155 | if(draggable.options.delay) { |
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156 | this._timeout = setTimeout(function() { |
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157 | Draggables._timeout = null; |
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158 | window.focus(); |
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159 | Draggables.activeDraggable = draggable; |
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160 | }.bind(this), draggable.options.delay); |
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161 | } else { |
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162 | window.focus(); // allows keypress events if window isn't currently focused, fails for Safari |
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163 | this.activeDraggable = draggable; |
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164 | } |
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165 | }, |
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166 | |
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167 | deactivate: function() { |
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168 | this.activeDraggable = null; |
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169 | }, |
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170 | |
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171 | updateDrag: function(event) { |
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172 | if(!this.activeDraggable) return; |
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173 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
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174 | // Mozilla-based browsers fire successive mousemove events with |
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175 | // the same coordinates, prevent needless redrawing (moz bug?) |
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176 | if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return; |
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177 | this._lastPointer = pointer; |
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178 | |
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179 | this.activeDraggable.updateDrag(event, pointer); |
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180 | }, |
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181 | |
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182 | endDrag: function(event) { |
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183 | if(this._timeout) { |
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184 | clearTimeout(this._timeout); |
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185 | this._timeout = null; |
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186 | } |
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187 | if(!this.activeDraggable) return; |
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188 | this._lastPointer = null; |
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189 | this.activeDraggable.endDrag(event); |
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190 | this.activeDraggable = null; |
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191 | }, |
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192 | |
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193 | keyPress: function(event) { |
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194 | if(this.activeDraggable) |
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195 | this.activeDraggable.keyPress(event); |
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196 | }, |
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197 | |
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198 | addObserver: function(observer) { |
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199 | this.observers.push(observer); |
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200 | this._cacheObserverCallbacks(); |
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201 | }, |
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202 | |
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203 | removeObserver: function(element) { // element instead of observer fixes mem leaks |
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204 | this.observers = this.observers.reject( function(o) { return o.element==element }); |
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205 | this._cacheObserverCallbacks(); |
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206 | }, |
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207 | |
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208 | notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag' |
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209 | if(this[eventName+'Count'] > 0) |
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210 | this.observers.each( function(o) { |
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211 | if(o[eventName]) o[eventName](eventName, draggable, event); |
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212 | }); |
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213 | if(draggable.options[eventName]) draggable.options[eventName](draggable, event); |
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214 | }, |
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215 | |
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216 | _cacheObserverCallbacks: function() { |
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217 | ['onStart','onEnd','onDrag'].each( function(eventName) { |
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218 | Draggables[eventName+'Count'] = Draggables.observers.select( |
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219 | function(o) { return o[eventName]; } |
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220 | ).length; |
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221 | }); |
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222 | } |
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223 | }; |
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224 | |
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225 | /*--------------------------------------------------------------------------*/ |
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226 | |
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227 | var Draggable = Class.create({ |
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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 = Object.isNumber(element._opacity) ? 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 | quiet: false, |
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249 | scroll: false, |
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250 | scrollSensitivity: 20, |
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251 | scrollSpeed: 15, |
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252 | snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] } |
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253 | delay: 0 |
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254 | }; |
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255 | |
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256 | if(!arguments[1] || Object.isUndefined(arguments[1].endeffect)) |
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257 | Object.extend(defaults, { |
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258 | starteffect: function(element) { |
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259 | element._opacity = Element.getOpacity(element); |
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260 | Draggable._dragging[element] = true; |
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261 | new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); |
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262 | } |
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263 | }); |
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264 | |
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265 | var options = Object.extend(defaults, arguments[1] || { }); |
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266 | |
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267 | this.element = $(element); |
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268 | |
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269 | if(options.handle && Object.isString(options.handle)) |
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270 | this.handle = this.element.down('.'+options.handle, 0); |
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271 | |
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272 | if(!this.handle) this.handle = $(options.handle); |
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273 | if(!this.handle) this.handle = this.element; |
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274 | |
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275 | if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) { |
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276 | options.scroll = $(options.scroll); |
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277 | this._isScrollChild = Element.childOf(this.element, options.scroll); |
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278 | } |
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279 | |
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280 | Element.makePositioned(this.element); // fix IE |
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281 | |
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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(!Object.isUndefined(Draggable._dragging[this.element]) && |
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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((tag_name = src.tagName.toUpperCase()) && ( |
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309 | tag_name=='INPUT' || |
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310 | tag_name=='SELECT' || |
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311 | tag_name=='OPTION' || |
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312 | tag_name=='BUTTON' || |
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313 | tag_name=='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 | if(!this.delta) |
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327 | this.delta = this.currentDelta(); |
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328 | |
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329 | if(this.options.zindex) { |
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330 | this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); |
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331 | this.element.style.zIndex = this.options.zindex; |
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332 | } |
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333 | |
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334 | if(this.options.ghosting) { |
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335 | this._clone = this.element.cloneNode(true); |
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336 | this._originallyAbsolute = (this.element.getStyle('position') == 'absolute'); |
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337 | if (!this._originallyAbsolute) |
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338 | Position.absolutize(this.element); |
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339 | this.element.parentNode.insertBefore(this._clone, this.element); |
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340 | } |
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341 | |
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342 | if(this.options.scroll) { |
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343 | if (this.options.scroll == window) { |
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344 | var where = this._getWindowScroll(this.options.scroll); |
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345 | this.originalScrollLeft = where.left; |
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346 | this.originalScrollTop = where.top; |
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347 | } else { |
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348 | this.originalScrollLeft = this.options.scroll.scrollLeft; |
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349 | this.originalScrollTop = this.options.scroll.scrollTop; |
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350 | } |
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351 | } |
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352 | |
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353 | Draggables.notify('onStart', this, event); |
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354 | |
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355 | if(this.options.starteffect) this.options.starteffect(this.element); |
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356 | }, |
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357 | |
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358 | updateDrag: function(event, pointer) { |
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359 | if(!this.dragging) this.startDrag(event); |
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360 | |
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361 | if(!this.options.quiet){ |
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362 | Position.prepare(); |
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363 | Droppables.show(pointer, this.element); |
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364 | } |
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365 | |
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366 | Draggables.notify('onDrag', this, event); |
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367 | |
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368 | this.draw(pointer); |
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369 | if(this.options.change) this.options.change(this); |
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370 | |
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371 | if(this.options.scroll) { |
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372 | this.stopScrolling(); |
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373 | |
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374 | var p; |
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375 | if (this.options.scroll == window) { |
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376 | with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; } |
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377 | } else { |
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378 | p = Position.page(this.options.scroll); |
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379 | p[0] += this.options.scroll.scrollLeft + Position.deltaX; |
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380 | p[1] += this.options.scroll.scrollTop + Position.deltaY; |
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381 | p.push(p[0]+this.options.scroll.offsetWidth); |
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382 | p.push(p[1]+this.options.scroll.offsetHeight); |
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383 | } |
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384 | var speed = [0,0]; |
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385 | if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity); |
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386 | if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity); |
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387 | if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity); |
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388 | if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity); |
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389 | this.startScrolling(speed); |
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390 | } |
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391 | |
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392 | // fix AppleWebKit rendering |
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393 | if(Prototype.Browser.WebKit) window.scrollBy(0,0); |
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394 | |
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395 | Event.stop(event); |
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396 | }, |
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397 | |
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398 | finishDrag: function(event, success) { |
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399 | this.dragging = false; |
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400 | |
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401 | if(this.options.quiet){ |
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402 | Position.prepare(); |
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403 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
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404 | Droppables.show(pointer, this.element); |
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405 | } |
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406 | |
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407 | if(this.options.ghosting) { |
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408 | if (!this._originallyAbsolute) |
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409 | Position.relativize(this.element); |
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410 | delete this._originallyAbsolute; |
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411 | Element.remove(this._clone); |
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412 | this._clone = null; |
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413 | } |
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414 | |
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415 | var dropped = false; |
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416 | if(success) { |
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417 | dropped = Droppables.fire(event, this.element); |
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418 | if (!dropped) dropped = false; |
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419 | } |
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420 | if(dropped && this.options.onDropped) this.options.onDropped(this.element); |
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421 | Draggables.notify('onEnd', this, event); |
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422 | |
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423 | var revert = this.options.revert; |
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424 | if(revert && Object.isFunction(revert)) revert = revert(this.element); |
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425 | |
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426 | var d = this.currentDelta(); |
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427 | if(revert && this.options.reverteffect) { |
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428 | if (dropped == 0 || revert != 'failure') |
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429 | this.options.reverteffect(this.element, |
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430 | d[1]-this.delta[1], d[0]-this.delta[0]); |
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431 | } else { |
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432 | this.delta = d; |
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433 | } |
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434 | |
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435 | if(this.options.zindex) |
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436 | this.element.style.zIndex = this.originalZ; |
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437 | |
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438 | if(this.options.endeffect) |
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439 | this.options.endeffect(this.element); |
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440 | |
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441 | Draggables.deactivate(this); |
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442 | Droppables.reset(); |
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443 | }, |
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444 | |
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445 | keyPress: function(event) { |
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446 | if(event.keyCode!=Event.KEY_ESC) return; |
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447 | this.finishDrag(event, false); |
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448 | Event.stop(event); |
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449 | }, |
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450 | |
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451 | endDrag: function(event) { |
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452 | if(!this.dragging) return; |
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453 | this.stopScrolling(); |
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454 | this.finishDrag(event, true); |
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455 | Event.stop(event); |
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456 | }, |
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457 | |
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458 | draw: function(point) { |
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459 | var pos = Position.cumulativeOffset(this.element); |
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460 | if(this.options.ghosting) { |
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461 | var r = Position.realOffset(this.element); |
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462 | pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; |
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463 | } |
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464 | |
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465 | var d = this.currentDelta(); |
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466 | pos[0] -= d[0]; pos[1] -= d[1]; |
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467 | |
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468 | if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) { |
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469 | pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft; |
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470 | pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop; |
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471 | } |
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472 | |
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473 | var p = [0,1].map(function(i){ |
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474 | return (point[i]-pos[i]-this.offset[i]) |
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475 | }.bind(this)); |
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476 | |
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477 | if(this.options.snap) { |
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478 | if(Object.isFunction(this.options.snap)) { |
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479 | p = this.options.snap(p[0],p[1],this); |
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480 | } else { |
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481 | if(Object.isArray(this.options.snap)) { |
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482 | p = p.map( function(v, i) { |
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483 | return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this)); |
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484 | } else { |
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485 | p = p.map( function(v) { |
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486 | return (v/this.options.snap).round()*this.options.snap }.bind(this)); |
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487 | } |
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488 | }} |
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489 | |
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490 | var style = this.element.style; |
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491 | if((!this.options.constraint) || (this.options.constraint=='horizontal')) |
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492 | style.left = p[0] + "px"; |
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493 | if((!this.options.constraint) || (this.options.constraint=='vertical')) |
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494 | style.top = p[1] + "px"; |
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495 | |
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496 | if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering |
---|
497 | }, |
---|
498 | |
---|
499 | stopScrolling: function() { |
---|
500 | if(this.scrollInterval) { |
---|
501 | clearInterval(this.scrollInterval); |
---|
502 | this.scrollInterval = null; |
---|
503 | Draggables._lastScrollPointer = null; |
---|
504 | } |
---|
505 | }, |
---|
506 | |
---|
507 | startScrolling: function(speed) { |
---|
508 | if(!(speed[0] || speed[1])) return; |
---|
509 | this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed]; |
---|
510 | this.lastScrolled = new Date(); |
---|
511 | this.scrollInterval = setInterval(this.scroll.bind(this), 10); |
---|
512 | }, |
---|
513 | |
---|
514 | scroll: function() { |
---|
515 | var current = new Date(); |
---|
516 | var delta = current - this.lastScrolled; |
---|
517 | this.lastScrolled = current; |
---|
518 | if(this.options.scroll == window) { |
---|
519 | with (this._getWindowScroll(this.options.scroll)) { |
---|
520 | if (this.scrollSpeed[0] || this.scrollSpeed[1]) { |
---|
521 | var d = delta / 1000; |
---|
522 | this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] ); |
---|
523 | } |
---|
524 | } |
---|
525 | } else { |
---|
526 | this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000; |
---|
527 | this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000; |
---|
528 | } |
---|
529 | |
---|
530 | Position.prepare(); |
---|
531 | Droppables.show(Draggables._lastPointer, this.element); |
---|
532 | Draggables.notify('onDrag', this); |
---|
533 | if (this._isScrollChild) { |
---|
534 | Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer); |
---|
535 | Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000; |
---|
536 | Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000; |
---|
537 | if (Draggables._lastScrollPointer[0] < 0) |
---|
538 | Draggables._lastScrollPointer[0] = 0; |
---|
539 | if (Draggables._lastScrollPointer[1] < 0) |
---|
540 | Draggables._lastScrollPointer[1] = 0; |
---|
541 | this.draw(Draggables._lastScrollPointer); |
---|
542 | } |
---|
543 | |
---|
544 | if(this.options.change) this.options.change(this); |
---|
545 | }, |
---|
546 | |
---|
547 | _getWindowScroll: function(w) { |
---|
548 | var T, L, W, H; |
---|
549 | with (w.document) { |
---|
550 | if (w.document.documentElement && documentElement.scrollTop) { |
---|
551 | T = documentElement.scrollTop; |
---|
552 | L = documentElement.scrollLeft; |
---|
553 | } else if (w.document.body) { |
---|
554 | T = body.scrollTop; |
---|
555 | L = body.scrollLeft; |
---|
556 | } |
---|
557 | if (w.innerWidth) { |
---|
558 | W = w.innerWidth; |
---|
559 | H = w.innerHeight; |
---|
560 | } else if (w.document.documentElement && documentElement.clientWidth) { |
---|
561 | W = documentElement.clientWidth; |
---|
562 | H = documentElement.clientHeight; |
---|
563 | } else { |
---|
564 | W = body.offsetWidth; |
---|
565 | H = body.offsetHeight; |
---|
566 | } |
---|
567 | } |
---|
568 | return { top: T, left: L, width: W, height: H }; |
---|
569 | } |
---|
570 | }); |
---|
571 | |
---|
572 | Draggable._dragging = { }; |
---|
573 | |
---|
574 | /*--------------------------------------------------------------------------*/ |
---|
575 | |
---|
576 | var SortableObserver = Class.create({ |
---|
577 | initialize: function(element, observer) { |
---|
578 | this.element = $(element); |
---|
579 | this.observer = observer; |
---|
580 | this.lastValue = Sortable.serialize(this.element); |
---|
581 | }, |
---|
582 | |
---|
583 | onStart: function() { |
---|
584 | this.lastValue = Sortable.serialize(this.element); |
---|
585 | }, |
---|
586 | |
---|
587 | onEnd: function() { |
---|
588 | Sortable.unmark(); |
---|
589 | if(this.lastValue != Sortable.serialize(this.element)) |
---|
590 | this.observer(this.element) |
---|
591 | } |
---|
592 | }); |
---|
593 | |
---|
594 | var Sortable = { |
---|
595 | SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, |
---|
596 | |
---|
597 | sortables: { }, |
---|
598 | |
---|
599 | _findRootElement: function(element) { |
---|
600 | while (element.tagName.toUpperCase() != "BODY") { |
---|
601 | if(element.id && Sortable.sortables[element.id]) return element; |
---|
602 | element = element.parentNode; |
---|
603 | } |
---|
604 | }, |
---|
605 | |
---|
606 | options: function(element) { |
---|
607 | element = Sortable._findRootElement($(element)); |
---|
608 | if(!element) return; |
---|
609 | return Sortable.sortables[element.id]; |
---|
610 | }, |
---|
611 | |
---|
612 | destroy: function(element){ |
---|
613 | element = $(element); |
---|
614 | var s = Sortable.sortables[element.id]; |
---|
615 | |
---|
616 | if(s) { |
---|
617 | Draggables.removeObserver(s.element); |
---|
618 | s.droppables.each(function(d){ Droppables.remove(d) }); |
---|
619 | s.draggables.invoke('destroy'); |
---|
620 | |
---|
621 | delete Sortable.sortables[s.element.id]; |
---|
622 | } |
---|
623 | }, |
---|
624 | |
---|
625 | create: function(element) { |
---|
626 | element = $(element); |
---|
627 | var options = Object.extend({ |
---|
628 | element: element, |
---|
629 | tag: 'li', // assumes li children, override with tag: 'tagname' |
---|
630 | dropOnEmpty: false, |
---|
631 | tree: false, |
---|
632 | treeTag: 'ul', |
---|
633 | overlap: 'vertical', // one of 'vertical', 'horizontal' |
---|
634 | constraint: 'vertical', // one of 'vertical', 'horizontal', false |
---|
635 | containment: element, // also takes array of elements (or id's); or false |
---|
636 | handle: false, // or a CSS class |
---|
637 | only: false, |
---|
638 | delay: 0, |
---|
639 | hoverclass: null, |
---|
640 | ghosting: false, |
---|
641 | quiet: false, |
---|
642 | scroll: false, |
---|
643 | scrollSensitivity: 20, |
---|
644 | scrollSpeed: 15, |
---|
645 | format: this.SERIALIZE_RULE, |
---|
646 | |
---|
647 | // these take arrays of elements or ids and can be |
---|
648 | // used for better initialization performance |
---|
649 | elements: false, |
---|
650 | handles: false, |
---|
651 | |
---|
652 | onChange: Prototype.emptyFunction, |
---|
653 | onUpdate: Prototype.emptyFunction |
---|
654 | }, arguments[1] || { }); |
---|
655 | |
---|
656 | // clear any old sortable with same element |
---|
657 | this.destroy(element); |
---|
658 | |
---|
659 | // build options for the draggables |
---|
660 | var options_for_draggable = { |
---|
661 | revert: true, |
---|
662 | quiet: options.quiet, |
---|
663 | scroll: options.scroll, |
---|
664 | scrollSpeed: options.scrollSpeed, |
---|
665 | scrollSensitivity: options.scrollSensitivity, |
---|
666 | delay: options.delay, |
---|
667 | ghosting: options.ghosting, |
---|
668 | constraint: options.constraint, |
---|
669 | handle: options.handle }; |
---|
670 | |
---|
671 | if(options.starteffect) |
---|
672 | options_for_draggable.starteffect = options.starteffect; |
---|
673 | |
---|
674 | if(options.reverteffect) |
---|
675 | options_for_draggable.reverteffect = options.reverteffect; |
---|
676 | else |
---|
677 | if(options.ghosting) options_for_draggable.reverteffect = function(element) { |
---|
678 | element.style.top = 0; |
---|
679 | element.style.left = 0; |
---|
680 | }; |
---|
681 | |
---|
682 | if(options.endeffect) |
---|
683 | options_for_draggable.endeffect = options.endeffect; |
---|
684 | |
---|
685 | if(options.zindex) |
---|
686 | options_for_draggable.zindex = options.zindex; |
---|
687 | |
---|
688 | // build options for the droppables |
---|
689 | var options_for_droppable = { |
---|
690 | overlap: options.overlap, |
---|
691 | containment: options.containment, |
---|
692 | tree: options.tree, |
---|
693 | hoverclass: options.hoverclass, |
---|
694 | onHover: Sortable.onHover |
---|
695 | }; |
---|
696 | |
---|
697 | var options_for_tree = { |
---|
698 | onHover: Sortable.onEmptyHover, |
---|
699 | overlap: options.overlap, |
---|
700 | containment: options.containment, |
---|
701 | hoverclass: options.hoverclass |
---|
702 | }; |
---|
703 | |
---|
704 | // fix for gecko engine |
---|
705 | Element.cleanWhitespace(element); |
---|
706 | |
---|
707 | options.draggables = []; |
---|
708 | options.droppables = []; |
---|
709 | |
---|
710 | // drop on empty handling |
---|
711 | if(options.dropOnEmpty || options.tree) { |
---|
712 | Droppables.add(element, options_for_tree); |
---|
713 | options.droppables.push(element); |
---|
714 | } |
---|
715 | |
---|
716 | (options.elements || this.findElements(element, options) || []).each( function(e,i) { |
---|
717 | var handle = options.handles ? $(options.handles[i]) : |
---|
718 | (options.handle ? $(e).select('.' + options.handle)[0] : e); |
---|
719 | options.draggables.push( |
---|
720 | new Draggable(e, Object.extend(options_for_draggable, { handle: handle }))); |
---|
721 | Droppables.add(e, options_for_droppable); |
---|
722 | if(options.tree) e.treeNode = element; |
---|
723 | options.droppables.push(e); |
---|
724 | }); |
---|
725 | |
---|
726 | if(options.tree) { |
---|
727 | (Sortable.findTreeElements(element, options) || []).each( function(e) { |
---|
728 | Droppables.add(e, options_for_tree); |
---|
729 | e.treeNode = element; |
---|
730 | options.droppables.push(e); |
---|
731 | }); |
---|
732 | } |
---|
733 | |
---|
734 | // keep reference |
---|
735 | this.sortables[element.id] = options; |
---|
736 | |
---|
737 | // for onupdate |
---|
738 | Draggables.addObserver(new SortableObserver(element, options.onUpdate)); |
---|
739 | |
---|
740 | }, |
---|
741 | |
---|
742 | // return all suitable-for-sortable elements in a guaranteed order |
---|
743 | findElements: function(element, options) { |
---|
744 | return Element.findChildren( |
---|
745 | element, options.only, options.tree ? true : false, options.tag); |
---|
746 | }, |
---|
747 | |
---|
748 | findTreeElements: function(element, options) { |
---|
749 | return Element.findChildren( |
---|
750 | element, options.only, options.tree ? true : false, options.treeTag); |
---|
751 | }, |
---|
752 | |
---|
753 | onHover: function(element, dropon, overlap) { |
---|
754 | if(Element.isParent(dropon, element)) return; |
---|
755 | |
---|
756 | if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) { |
---|
757 | return; |
---|
758 | } else if(overlap>0.5) { |
---|
759 | Sortable.mark(dropon, 'before'); |
---|
760 | if(dropon.previousSibling != element) { |
---|
761 | var oldParentNode = element.parentNode; |
---|
762 | element.style.visibility = "hidden"; // fix gecko rendering |
---|
763 | dropon.parentNode.insertBefore(element, dropon); |
---|
764 | if(dropon.parentNode!=oldParentNode) |
---|
765 | Sortable.options(oldParentNode).onChange(element); |
---|
766 | Sortable.options(dropon.parentNode).onChange(element); |
---|
767 | } |
---|
768 | } else { |
---|
769 | Sortable.mark(dropon, 'after'); |
---|
770 | var nextElement = dropon.nextSibling || null; |
---|
771 | if(nextElement != element) { |
---|
772 | var oldParentNode = element.parentNode; |
---|
773 | element.style.visibility = "hidden"; // fix gecko rendering |
---|
774 | dropon.parentNode.insertBefore(element, nextElement); |
---|
775 | if(dropon.parentNode!=oldParentNode) |
---|
776 | Sortable.options(oldParentNode).onChange(element); |
---|
777 | Sortable.options(dropon.parentNode).onChange(element); |
---|
778 | } |
---|
779 | } |
---|
780 | }, |
---|
781 | |
---|
782 | onEmptyHover: function(element, dropon, overlap) { |
---|
783 | var oldParentNode = element.parentNode; |
---|
784 | var droponOptions = Sortable.options(dropon); |
---|
785 | |
---|
786 | if(!Element.isParent(dropon, element)) { |
---|
787 | var index; |
---|
788 | |
---|
789 | var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); |
---|
790 | var child = null; |
---|
791 | |
---|
792 | if(children) { |
---|
793 | var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); |
---|
794 | |
---|
795 | for (index = 0; index < children.length; index += 1) { |
---|
796 | if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) { |
---|
797 | offset -= Element.offsetSize (children[index], droponOptions.overlap); |
---|
798 | } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) { |
---|
799 | child = index + 1 < children.length ? children[index + 1] : null; |
---|
800 | break; |
---|
801 | } else { |
---|
802 | child = children[index]; |
---|
803 | break; |
---|
804 | } |
---|
805 | } |
---|
806 | } |
---|
807 | |
---|
808 | dropon.insertBefore(element, child); |
---|
809 | |
---|
810 | Sortable.options(oldParentNode).onChange(element); |
---|
811 | droponOptions.onChange(element); |
---|
812 | } |
---|
813 | }, |
---|
814 | |
---|
815 | unmark: function() { |
---|
816 | if(Sortable._marker) Sortable._marker.hide(); |
---|
817 | }, |
---|
818 | |
---|
819 | mark: function(dropon, position) { |
---|
820 | // mark on ghosting only |
---|
821 | var sortable = Sortable.options(dropon.parentNode); |
---|
822 | if(sortable && !sortable.ghosting) return; |
---|
823 | |
---|
824 | if(!Sortable._marker) { |
---|
825 | Sortable._marker = |
---|
826 | ($('dropmarker') || Element.extend(document.createElement('DIV'))). |
---|
827 | hide().addClassName('dropmarker').setStyle({position:'absolute'}); |
---|
828 | document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); |
---|
829 | } |
---|
830 | var offsets = Position.cumulativeOffset(dropon); |
---|
831 | Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); |
---|
832 | |
---|
833 | if(position=='after') |
---|
834 | if(sortable.overlap == 'horizontal') |
---|
835 | Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); |
---|
836 | else |
---|
837 | Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); |
---|
838 | |
---|
839 | Sortable._marker.show(); |
---|
840 | }, |
---|
841 | |
---|
842 | _tree: function(element, options, parent) { |
---|
843 | var children = Sortable.findElements(element, options) || []; |
---|
844 | |
---|
845 | for (var i = 0; i < children.length; ++i) { |
---|
846 | var match = children[i].id.match(options.format); |
---|
847 | |
---|
848 | if (!match) continue; |
---|
849 | |
---|
850 | var child = { |
---|
851 | id: encodeURIComponent(match ? match[1] : null), |
---|
852 | element: element, |
---|
853 | parent: parent, |
---|
854 | children: [], |
---|
855 | position: parent.children.length, |
---|
856 | container: $(children[i]).down(options.treeTag) |
---|
857 | }; |
---|
858 | |
---|
859 | /* Get the element containing the children and recurse over it */ |
---|
860 | if (child.container) |
---|
861 | this._tree(child.container, options, child); |
---|
862 | |
---|
863 | parent.children.push (child); |
---|
864 | } |
---|
865 | |
---|
866 | return parent; |
---|
867 | }, |
---|
868 | |
---|
869 | tree: function(element) { |
---|
870 | element = $(element); |
---|
871 | var sortableOptions = this.options(element); |
---|
872 | var options = Object.extend({ |
---|
873 | tag: sortableOptions.tag, |
---|
874 | treeTag: sortableOptions.treeTag, |
---|
875 | only: sortableOptions.only, |
---|
876 | name: element.id, |
---|
877 | format: sortableOptions.format |
---|
878 | }, arguments[1] || { }); |
---|
879 | |
---|
880 | var root = { |
---|
881 | id: null, |
---|
882 | parent: null, |
---|
883 | children: [], |
---|
884 | container: element, |
---|
885 | position: 0 |
---|
886 | }; |
---|
887 | |
---|
888 | return Sortable._tree(element, options, root); |
---|
889 | }, |
---|
890 | |
---|
891 | /* Construct a [i] index for a particular node */ |
---|
892 | _constructIndex: function(node) { |
---|
893 | var index = ''; |
---|
894 | do { |
---|
895 | if (node.id) index = '[' + node.position + ']' + index; |
---|
896 | } while ((node = node.parent) != null); |
---|
897 | return index; |
---|
898 | }, |
---|
899 | |
---|
900 | sequence: function(element) { |
---|
901 | element = $(element); |
---|
902 | var options = Object.extend(this.options(element), arguments[1] || { }); |
---|
903 | |
---|
904 | return $(this.findElements(element, options) || []).map( function(item) { |
---|
905 | return item.id.match(options.format) ? item.id.match(options.format)[1] : ''; |
---|
906 | }); |
---|
907 | }, |
---|
908 | |
---|
909 | setSequence: function(element, new_sequence) { |
---|
910 | element = $(element); |
---|
911 | var options = Object.extend(this.options(element), arguments[2] || { }); |
---|
912 | |
---|
913 | var nodeMap = { }; |
---|
914 | this.findElements(element, options).each( function(n) { |
---|
915 | if (n.id.match(options.format)) |
---|
916 | nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode]; |
---|
917 | n.parentNode.removeChild(n); |
---|
918 | }); |
---|
919 | |
---|
920 | new_sequence.each(function(ident) { |
---|
921 | var n = nodeMap[ident]; |
---|
922 | if (n) { |
---|
923 | n[1].appendChild(n[0]); |
---|
924 | delete nodeMap[ident]; |
---|
925 | } |
---|
926 | }); |
---|
927 | }, |
---|
928 | |
---|
929 | serialize: function(element) { |
---|
930 | element = $(element); |
---|
931 | var options = Object.extend(Sortable.options(element), arguments[1] || { }); |
---|
932 | var name = encodeURIComponent( |
---|
933 | (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); |
---|
934 | |
---|
935 | if (options.tree) { |
---|
936 | return Sortable.tree(element, arguments[1]).children.map( function (item) { |
---|
937 | return [name + Sortable._constructIndex(item) + "[id]=" + |
---|
938 | encodeURIComponent(item.id)].concat(item.children.map(arguments.callee)); |
---|
939 | }).flatten().join('&'); |
---|
940 | } else { |
---|
941 | return Sortable.sequence(element, arguments[1]).map( function(item) { |
---|
942 | return name + "[]=" + encodeURIComponent(item); |
---|
943 | }).join('&'); |
---|
944 | } |
---|
945 | } |
---|
946 | }; |
---|
947 | |
---|
948 | // Returns true if child is contained within element |
---|
949 | Element.isParent = function(child, element) { |
---|
950 | if (!child.parentNode || child == element) return false; |
---|
951 | if (child.parentNode == element) return true; |
---|
952 | return Element.isParent(child.parentNode, element); |
---|
953 | }; |
---|
954 | |
---|
955 | Element.findChildren = function(element, only, recursive, tagName) { |
---|
956 | if(!element.hasChildNodes()) return null; |
---|
957 | tagName = tagName.toUpperCase(); |
---|
958 | if(only) only = [only].flatten(); |
---|
959 | var elements = []; |
---|
960 | $A(element.childNodes).each( function(e) { |
---|
961 | if(e.tagName && e.tagName.toUpperCase()==tagName && |
---|
962 | (!only || (Element.classNames(e).detect(function(v) { return only.include(v) })))) |
---|
963 | elements.push(e); |
---|
964 | if(recursive) { |
---|
965 | var grandchildren = Element.findChildren(e, only, recursive, tagName); |
---|
966 | if(grandchildren) elements.push(grandchildren); |
---|
967 | } |
---|
968 | }); |
---|
969 | |
---|
970 | return (elements.length>0 ? elements.flatten() : []); |
---|
971 | }; |
---|
972 | |
---|
973 | Element.offsetSize = function (element, type) { |
---|
974 | return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; |
---|
975 | }; |
---|