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19c6deae | 1 | // script.aculo.us dragdrop.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009 |
71d32241 | 2 | |
19c6deae AD |
3 | // Copyright (c) 2005-2009 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) |
4 | // | |
71d32241 AD |
5 | // script.aculo.us is freely distributable under the terms of an MIT-style license. |
6 | // For details, see the script.aculo.us web site: http://script.aculo.us/ | |
7 | ||
4b9dfd5b | 8 | if(Object.isUndefined(Effect)) |
71d32241 AD |
9 | throw("dragdrop.js requires including script.aculo.us' effects.js library"); |
10 | ||
11 | var Droppables = { | |
12 | drops: [], | |
13 | ||
14 | remove: function(element) { | |
15 | this.drops = this.drops.reject(function(d) { return d.element==$(element) }); | |
16 | }, | |
17 | ||
18 | add: function(element) { | |
19 | element = $(element); | |
20 | var options = Object.extend({ | |
21 | greedy: true, | |
22 | hoverclass: null, | |
23 | tree: false | |
4b9dfd5b | 24 | }, arguments[1] || { }); |
71d32241 AD |
25 | |
26 | // cache containers | |
27 | if(options.containment) { | |
28 | options._containers = []; | |
29 | var containment = options.containment; | |
4b9dfd5b | 30 | if(Object.isArray(containment)) { |
71d32241 AD |
31 | containment.each( function(c) { options._containers.push($(c)) }); |
32 | } else { | |
33 | options._containers.push($(containment)); | |
34 | } | |
35 | } | |
19c6deae | 36 | |
71d32241 AD |
37 | if(options.accept) options.accept = [options.accept].flatten(); |
38 | ||
39 | Element.makePositioned(element); // fix IE | |
40 | options.element = element; | |
41 | ||
42 | this.drops.push(options); | |
43 | }, | |
19c6deae | 44 | |
71d32241 AD |
45 | findDeepestChild: function(drops) { |
46 | deepest = drops[0]; | |
19c6deae | 47 | |
71d32241 AD |
48 | for (i = 1; i < drops.length; ++i) |
49 | if (Element.isParent(drops[i].element, deepest.element)) | |
50 | deepest = drops[i]; | |
19c6deae | 51 | |
71d32241 AD |
52 | return deepest; |
53 | }, | |
54 | ||
55 | isContained: function(element, drop) { | |
56 | var containmentNode; | |
57 | if(drop.tree) { | |
19c6deae | 58 | containmentNode = element.treeNode; |
71d32241 AD |
59 | } else { |
60 | containmentNode = element.parentNode; | |
61 | } | |
62 | return drop._containers.detect(function(c) { return containmentNode == c }); | |
63 | }, | |
19c6deae | 64 | |
71d32241 AD |
65 | isAffected: function(point, element, drop) { |
66 | return ( | |
67 | (drop.element!=element) && | |
68 | ((!drop._containers) || | |
69 | this.isContained(element, drop)) && | |
70 | ((!drop.accept) || | |
19c6deae | 71 | (Element.classNames(element).detect( |
71d32241 AD |
72 | function(v) { return drop.accept.include(v) } ) )) && |
73 | Position.within(drop.element, point[0], point[1]) ); | |
74 | }, | |
75 | ||
76 | deactivate: function(drop) { | |
77 | if(drop.hoverclass) | |
78 | Element.removeClassName(drop.element, drop.hoverclass); | |
79 | this.last_active = null; | |
80 | }, | |
81 | ||
82 | activate: function(drop) { | |
83 | if(drop.hoverclass) | |
84 | Element.addClassName(drop.element, drop.hoverclass); | |
85 | this.last_active = drop; | |
86 | }, | |
87 | ||
88 | show: function(point, element) { | |
89 | if(!this.drops.length) return; | |
4b9dfd5b | 90 | var drop, affected = []; |
19c6deae | 91 | |
71d32241 AD |
92 | this.drops.each( function(drop) { |
93 | if(Droppables.isAffected(point, element, drop)) | |
94 | affected.push(drop); | |
95 | }); | |
19c6deae | 96 | |
4b9dfd5b | 97 | if(affected.length>0) |
71d32241 | 98 | drop = Droppables.findDeepestChild(affected); |
4b9dfd5b AD |
99 | |
100 | if(this.last_active && this.last_active != drop) this.deactivate(this.last_active); | |
101 | if (drop) { | |
71d32241 AD |
102 | Position.within(drop.element, point[0], point[1]); |
103 | if(drop.onHover) | |
104 | drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); | |
19c6deae | 105 | |
4b9dfd5b | 106 | if (drop != this.last_active) Droppables.activate(drop); |
71d32241 AD |
107 | } |
108 | }, | |
109 | ||
110 | fire: function(event, element) { | |
111 | if(!this.last_active) return; | |
112 | Position.prepare(); | |
113 | ||
114 | if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active)) | |
4b9dfd5b | 115 | if (this.last_active.onDrop) { |
19c6deae AD |
116 | this.last_active.onDrop(element, this.last_active.element, event); |
117 | return true; | |
4b9dfd5b | 118 | } |
71d32241 AD |
119 | }, |
120 | ||
121 | reset: function() { | |
122 | if(this.last_active) | |
123 | this.deactivate(this.last_active); | |
124 | } | |
19c6deae | 125 | }; |
71d32241 AD |
126 | |
127 | var Draggables = { | |
128 | drags: [], | |
129 | observers: [], | |
19c6deae | 130 | |
71d32241 AD |
131 | register: function(draggable) { |
132 | if(this.drags.length == 0) { | |
133 | this.eventMouseUp = this.endDrag.bindAsEventListener(this); | |
134 | this.eventMouseMove = this.updateDrag.bindAsEventListener(this); | |
135 | this.eventKeypress = this.keyPress.bindAsEventListener(this); | |
19c6deae | 136 | |
71d32241 AD |
137 | Event.observe(document, "mouseup", this.eventMouseUp); |
138 | Event.observe(document, "mousemove", this.eventMouseMove); | |
139 | Event.observe(document, "keypress", this.eventKeypress); | |
140 | } | |
141 | this.drags.push(draggable); | |
142 | }, | |
19c6deae | 143 | |
71d32241 AD |
144 | unregister: function(draggable) { |
145 | this.drags = this.drags.reject(function(d) { return d==draggable }); | |
146 | if(this.drags.length == 0) { | |
147 | Event.stopObserving(document, "mouseup", this.eventMouseUp); | |
148 | Event.stopObserving(document, "mousemove", this.eventMouseMove); | |
149 | Event.stopObserving(document, "keypress", this.eventKeypress); | |
150 | } | |
151 | }, | |
19c6deae | 152 | |
71d32241 | 153 | activate: function(draggable) { |
19c6deae AD |
154 | if(draggable.options.delay) { |
155 | this._timeout = setTimeout(function() { | |
156 | Draggables._timeout = null; | |
157 | window.focus(); | |
158 | Draggables.activeDraggable = draggable; | |
159 | }.bind(this), draggable.options.delay); | |
71d32241 AD |
160 | } else { |
161 | window.focus(); // allows keypress events if window isn't currently focused, fails for Safari | |
162 | this.activeDraggable = draggable; | |
163 | } | |
164 | }, | |
19c6deae | 165 | |
71d32241 AD |
166 | deactivate: function() { |
167 | this.activeDraggable = null; | |
168 | }, | |
19c6deae | 169 | |
71d32241 AD |
170 | updateDrag: function(event) { |
171 | if(!this.activeDraggable) return; | |
172 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; | |
173 | // Mozilla-based browsers fire successive mousemove events with | |
174 | // the same coordinates, prevent needless redrawing (moz bug?) | |
175 | if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return; | |
176 | this._lastPointer = pointer; | |
19c6deae | 177 | |
71d32241 AD |
178 | this.activeDraggable.updateDrag(event, pointer); |
179 | }, | |
19c6deae | 180 | |
71d32241 | 181 | endDrag: function(event) { |
19c6deae AD |
182 | if(this._timeout) { |
183 | clearTimeout(this._timeout); | |
184 | this._timeout = null; | |
71d32241 AD |
185 | } |
186 | if(!this.activeDraggable) return; | |
187 | this._lastPointer = null; | |
188 | this.activeDraggable.endDrag(event); | |
189 | this.activeDraggable = null; | |
190 | }, | |
19c6deae | 191 | |
71d32241 AD |
192 | keyPress: function(event) { |
193 | if(this.activeDraggable) | |
194 | this.activeDraggable.keyPress(event); | |
195 | }, | |
19c6deae | 196 | |
71d32241 AD |
197 | addObserver: function(observer) { |
198 | this.observers.push(observer); | |
199 | this._cacheObserverCallbacks(); | |
200 | }, | |
19c6deae | 201 | |
71d32241 AD |
202 | removeObserver: function(element) { // element instead of observer fixes mem leaks |
203 | this.observers = this.observers.reject( function(o) { return o.element==element }); | |
204 | this._cacheObserverCallbacks(); | |
205 | }, | |
19c6deae | 206 | |
71d32241 AD |
207 | notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag' |
208 | if(this[eventName+'Count'] > 0) | |
209 | this.observers.each( function(o) { | |
210 | if(o[eventName]) o[eventName](eventName, draggable, event); | |
211 | }); | |
212 | if(draggable.options[eventName]) draggable.options[eventName](draggable, event); | |
213 | }, | |
19c6deae | 214 | |
71d32241 AD |
215 | _cacheObserverCallbacks: function() { |
216 | ['onStart','onEnd','onDrag'].each( function(eventName) { | |
217 | Draggables[eventName+'Count'] = Draggables.observers.select( | |
218 | function(o) { return o[eventName]; } | |
219 | ).length; | |
220 | }); | |
221 | } | |
19c6deae | 222 | }; |
71d32241 AD |
223 | |
224 | /*--------------------------------------------------------------------------*/ | |
225 | ||
4b9dfd5b | 226 | var Draggable = Class.create({ |
71d32241 AD |
227 | initialize: function(element) { |
228 | var defaults = { | |
229 | handle: false, | |
230 | reverteffect: function(element, top_offset, left_offset) { | |
231 | var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02; | |
232 | new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur, | |
233 | queue: {scope:'_draggable', position:'end'} | |
234 | }); | |
235 | }, | |
236 | endeffect: function(element) { | |
4b9dfd5b | 237 | var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0; |
19c6deae | 238 | new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, |
71d32241 | 239 | queue: {scope:'_draggable', position:'end'}, |
19c6deae AD |
240 | afterFinish: function(){ |
241 | Draggable._dragging[element] = false | |
71d32241 | 242 | } |
19c6deae | 243 | }); |
71d32241 AD |
244 | }, |
245 | zindex: 1000, | |
246 | revert: false, | |
4b9dfd5b | 247 | quiet: false, |
71d32241 AD |
248 | scroll: false, |
249 | scrollSensitivity: 20, | |
250 | scrollSpeed: 15, | |
251 | snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] } | |
252 | delay: 0 | |
253 | }; | |
19c6deae | 254 | |
4b9dfd5b | 255 | if(!arguments[1] || Object.isUndefined(arguments[1].endeffect)) |
71d32241 AD |
256 | Object.extend(defaults, { |
257 | starteffect: function(element) { | |
258 | element._opacity = Element.getOpacity(element); | |
259 | Draggable._dragging[element] = true; | |
19c6deae | 260 | new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); |
71d32241 AD |
261 | } |
262 | }); | |
19c6deae | 263 | |
4b9dfd5b | 264 | var options = Object.extend(defaults, arguments[1] || { }); |
71d32241 AD |
265 | |
266 | this.element = $(element); | |
19c6deae | 267 | |
4b9dfd5b | 268 | if(options.handle && Object.isString(options.handle)) |
71d32241 | 269 | this.handle = this.element.down('.'+options.handle, 0); |
19c6deae | 270 | |
71d32241 AD |
271 | if(!this.handle) this.handle = $(options.handle); |
272 | if(!this.handle) this.handle = this.element; | |
19c6deae | 273 | |
71d32241 AD |
274 | if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) { |
275 | options.scroll = $(options.scroll); | |
276 | this._isScrollChild = Element.childOf(this.element, options.scroll); | |
277 | } | |
278 | ||
19c6deae | 279 | Element.makePositioned(this.element); // fix IE |
71d32241 | 280 | |
71d32241 | 281 | this.options = options; |
19c6deae | 282 | this.dragging = false; |
71d32241 AD |
283 | |
284 | this.eventMouseDown = this.initDrag.bindAsEventListener(this); | |
285 | Event.observe(this.handle, "mousedown", this.eventMouseDown); | |
19c6deae | 286 | |
71d32241 AD |
287 | Draggables.register(this); |
288 | }, | |
19c6deae | 289 | |
71d32241 AD |
290 | destroy: function() { |
291 | Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); | |
292 | Draggables.unregister(this); | |
293 | }, | |
19c6deae | 294 | |
71d32241 AD |
295 | currentDelta: function() { |
296 | return([ | |
297 | parseInt(Element.getStyle(this.element,'left') || '0'), | |
298 | parseInt(Element.getStyle(this.element,'top') || '0')]); | |
299 | }, | |
19c6deae | 300 | |
71d32241 | 301 | initDrag: function(event) { |
4b9dfd5b | 302 | if(!Object.isUndefined(Draggable._dragging[this.element]) && |
71d32241 | 303 | Draggable._dragging[this.element]) return; |
19c6deae | 304 | if(Event.isLeftClick(event)) { |
71d32241 AD |
305 | // abort on form elements, fixes a Firefox issue |
306 | var src = Event.element(event); | |
307 | if((tag_name = src.tagName.toUpperCase()) && ( | |
308 | tag_name=='INPUT' || | |
309 | tag_name=='SELECT' || | |
310 | tag_name=='OPTION' || | |
311 | tag_name=='BUTTON' || | |
312 | tag_name=='TEXTAREA')) return; | |
19c6deae | 313 | |
71d32241 | 314 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
19c6deae | 315 | var pos = this.element.cumulativeOffset(); |
71d32241 | 316 | this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) }); |
19c6deae | 317 | |
71d32241 AD |
318 | Draggables.activate(this); |
319 | Event.stop(event); | |
320 | } | |
321 | }, | |
19c6deae | 322 | |
71d32241 AD |
323 | startDrag: function(event) { |
324 | this.dragging = true; | |
4b9dfd5b AD |
325 | if(!this.delta) |
326 | this.delta = this.currentDelta(); | |
19c6deae | 327 | |
71d32241 AD |
328 | if(this.options.zindex) { |
329 | this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); | |
330 | this.element.style.zIndex = this.options.zindex; | |
331 | } | |
19c6deae | 332 | |
71d32241 AD |
333 | if(this.options.ghosting) { |
334 | this._clone = this.element.cloneNode(true); | |
19c6deae AD |
335 | this._originallyAbsolute = (this.element.getStyle('position') == 'absolute'); |
336 | if (!this._originallyAbsolute) | |
4b9dfd5b | 337 | Position.absolutize(this.element); |
71d32241 AD |
338 | this.element.parentNode.insertBefore(this._clone, this.element); |
339 | } | |
19c6deae | 340 | |
71d32241 AD |
341 | if(this.options.scroll) { |
342 | if (this.options.scroll == window) { | |
343 | var where = this._getWindowScroll(this.options.scroll); | |
344 | this.originalScrollLeft = where.left; | |
345 | this.originalScrollTop = where.top; | |
346 | } else { | |
347 | this.originalScrollLeft = this.options.scroll.scrollLeft; | |
348 | this.originalScrollTop = this.options.scroll.scrollTop; | |
349 | } | |
350 | } | |
19c6deae | 351 | |
71d32241 | 352 | Draggables.notify('onStart', this, event); |
19c6deae | 353 | |
71d32241 AD |
354 | if(this.options.starteffect) this.options.starteffect(this.element); |
355 | }, | |
19c6deae | 356 | |
71d32241 AD |
357 | updateDrag: function(event, pointer) { |
358 | if(!this.dragging) this.startDrag(event); | |
19c6deae | 359 | |
4b9dfd5b AD |
360 | if(!this.options.quiet){ |
361 | Position.prepare(); | |
362 | Droppables.show(pointer, this.element); | |
363 | } | |
19c6deae | 364 | |
71d32241 | 365 | Draggables.notify('onDrag', this, event); |
19c6deae | 366 | |
71d32241 AD |
367 | this.draw(pointer); |
368 | if(this.options.change) this.options.change(this); | |
19c6deae | 369 | |
71d32241 AD |
370 | if(this.options.scroll) { |
371 | this.stopScrolling(); | |
19c6deae | 372 | |
71d32241 AD |
373 | var p; |
374 | if (this.options.scroll == window) { | |
375 | with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; } | |
376 | } else { | |
377 | p = Position.page(this.options.scroll); | |
378 | p[0] += this.options.scroll.scrollLeft + Position.deltaX; | |
379 | p[1] += this.options.scroll.scrollTop + Position.deltaY; | |
380 | p.push(p[0]+this.options.scroll.offsetWidth); | |
381 | p.push(p[1]+this.options.scroll.offsetHeight); | |
382 | } | |
383 | var speed = [0,0]; | |
384 | if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity); | |
385 | if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity); | |
386 | if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity); | |
387 | if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity); | |
388 | this.startScrolling(speed); | |
389 | } | |
19c6deae | 390 | |
71d32241 | 391 | // fix AppleWebKit rendering |
4b9dfd5b | 392 | if(Prototype.Browser.WebKit) window.scrollBy(0,0); |
19c6deae | 393 | |
71d32241 AD |
394 | Event.stop(event); |
395 | }, | |
19c6deae | 396 | |
71d32241 AD |
397 | finishDrag: function(event, success) { |
398 | this.dragging = false; | |
19c6deae | 399 | |
4b9dfd5b AD |
400 | if(this.options.quiet){ |
401 | Position.prepare(); | |
402 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; | |
403 | Droppables.show(pointer, this.element); | |
404 | } | |
71d32241 AD |
405 | |
406 | if(this.options.ghosting) { | |
19c6deae | 407 | if (!this._originallyAbsolute) |
4b9dfd5b | 408 | Position.relativize(this.element); |
19c6deae | 409 | delete this._originallyAbsolute; |
71d32241 AD |
410 | Element.remove(this._clone); |
411 | this._clone = null; | |
412 | } | |
413 | ||
19c6deae AD |
414 | var dropped = false; |
415 | if(success) { | |
416 | dropped = Droppables.fire(event, this.element); | |
417 | if (!dropped) dropped = false; | |
4b9dfd5b AD |
418 | } |
419 | if(dropped && this.options.onDropped) this.options.onDropped(this.element); | |
71d32241 AD |
420 | Draggables.notify('onEnd', this, event); |
421 | ||
422 | var revert = this.options.revert; | |
4b9dfd5b | 423 | if(revert && Object.isFunction(revert)) revert = revert(this.element); |
19c6deae | 424 | |
71d32241 AD |
425 | var d = this.currentDelta(); |
426 | if(revert && this.options.reverteffect) { | |
4b9dfd5b AD |
427 | if (dropped == 0 || revert != 'failure') |
428 | this.options.reverteffect(this.element, | |
429 | d[1]-this.delta[1], d[0]-this.delta[0]); | |
71d32241 AD |
430 | } else { |
431 | this.delta = d; | |
432 | } | |
433 | ||
434 | if(this.options.zindex) | |
435 | this.element.style.zIndex = this.originalZ; | |
436 | ||
19c6deae | 437 | if(this.options.endeffect) |
71d32241 | 438 | this.options.endeffect(this.element); |
19c6deae | 439 | |
71d32241 AD |
440 | Draggables.deactivate(this); |
441 | Droppables.reset(); | |
442 | }, | |
19c6deae | 443 | |
71d32241 AD |
444 | keyPress: function(event) { |
445 | if(event.keyCode!=Event.KEY_ESC) return; | |
446 | this.finishDrag(event, false); | |
447 | Event.stop(event); | |
448 | }, | |
19c6deae | 449 | |
71d32241 AD |
450 | endDrag: function(event) { |
451 | if(!this.dragging) return; | |
452 | this.stopScrolling(); | |
453 | this.finishDrag(event, true); | |
454 | Event.stop(event); | |
455 | }, | |
19c6deae | 456 | |
71d32241 | 457 | draw: function(point) { |
19c6deae | 458 | var pos = this.element.cumulativeOffset(); |
71d32241 AD |
459 | if(this.options.ghosting) { |
460 | var r = Position.realOffset(this.element); | |
461 | pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; | |
462 | } | |
19c6deae | 463 | |
71d32241 AD |
464 | var d = this.currentDelta(); |
465 | pos[0] -= d[0]; pos[1] -= d[1]; | |
19c6deae | 466 | |
71d32241 AD |
467 | if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) { |
468 | pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft; | |
469 | pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop; | |
470 | } | |
19c6deae AD |
471 | |
472 | var p = [0,1].map(function(i){ | |
473 | return (point[i]-pos[i]-this.offset[i]) | |
71d32241 | 474 | }.bind(this)); |
19c6deae | 475 | |
71d32241 | 476 | if(this.options.snap) { |
4b9dfd5b | 477 | if(Object.isFunction(this.options.snap)) { |
71d32241 AD |
478 | p = this.options.snap(p[0],p[1],this); |
479 | } else { | |
4b9dfd5b | 480 | if(Object.isArray(this.options.snap)) { |
71d32241 | 481 | p = p.map( function(v, i) { |
19c6deae | 482 | return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this)); |
71d32241 AD |
483 | } else { |
484 | p = p.map( function(v) { | |
19c6deae | 485 | return (v/this.options.snap).round()*this.options.snap }.bind(this)); |
71d32241 AD |
486 | } |
487 | }} | |
19c6deae | 488 | |
71d32241 AD |
489 | var style = this.element.style; |
490 | if((!this.options.constraint) || (this.options.constraint=='horizontal')) | |
491 | style.left = p[0] + "px"; | |
492 | if((!this.options.constraint) || (this.options.constraint=='vertical')) | |
493 | style.top = p[1] + "px"; | |
19c6deae | 494 | |
71d32241 AD |
495 | if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering |
496 | }, | |
19c6deae | 497 | |
71d32241 AD |
498 | stopScrolling: function() { |
499 | if(this.scrollInterval) { | |
500 | clearInterval(this.scrollInterval); | |
501 | this.scrollInterval = null; | |
502 | Draggables._lastScrollPointer = null; | |
503 | } | |
504 | }, | |
19c6deae | 505 | |
71d32241 AD |
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 | }, | |
19c6deae | 512 | |
71d32241 AD |
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 | } | |
19c6deae | 528 | |
71d32241 AD |
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 | } | |
19c6deae | 542 | |
71d32241 AD |
543 | if(this.options.change) this.options.change(this); |
544 | }, | |
19c6deae | 545 | |
71d32241 AD |
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; | |
19c6deae | 564 | H = body.offsetHeight; |
71d32241 AD |
565 | } |
566 | } | |
567 | return { top: T, left: L, width: W, height: H }; | |
568 | } | |
4b9dfd5b AD |
569 | }); |
570 | ||
571 | Draggable._dragging = { }; | |
71d32241 AD |
572 | |
573 | /*--------------------------------------------------------------------------*/ | |
574 | ||
4b9dfd5b | 575 | var SortableObserver = Class.create({ |
71d32241 AD |
576 | initialize: function(element, observer) { |
577 | this.element = $(element); | |
578 | this.observer = observer; | |
579 | this.lastValue = Sortable.serialize(this.element); | |
580 | }, | |
19c6deae | 581 | |
71d32241 AD |
582 | onStart: function() { |
583 | this.lastValue = Sortable.serialize(this.element); | |
584 | }, | |
19c6deae | 585 | |
71d32241 AD |
586 | onEnd: function() { |
587 | Sortable.unmark(); | |
588 | if(this.lastValue != Sortable.serialize(this.element)) | |
589 | this.observer(this.element) | |
590 | } | |
4b9dfd5b | 591 | }); |
71d32241 AD |
592 | |
593 | var Sortable = { | |
594 | SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, | |
19c6deae | 595 | |
4b9dfd5b | 596 | sortables: { }, |
19c6deae | 597 | |
71d32241 | 598 | _findRootElement: function(element) { |
19c6deae | 599 | while (element.tagName.toUpperCase() != "BODY") { |
71d32241 AD |
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 | }, | |
19c6deae | 610 | |
71d32241 | 611 | destroy: function(element){ |
19c6deae AD |
612 | element = $(element); |
613 | var s = Sortable.sortables[element.id]; | |
614 | ||
71d32241 AD |
615 | if(s) { |
616 | Draggables.removeObserver(s.element); | |
617 | s.droppables.each(function(d){ Droppables.remove(d) }); | |
618 | s.draggables.invoke('destroy'); | |
19c6deae | 619 | |
71d32241 AD |
620 | delete Sortable.sortables[s.element.id]; |
621 | } | |
622 | }, | |
623 | ||
624 | create: function(element) { | |
625 | element = $(element); | |
19c6deae | 626 | var options = Object.extend({ |
71d32241 AD |
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, | |
19c6deae | 640 | quiet: false, |
71d32241 AD |
641 | scroll: false, |
642 | scrollSensitivity: 20, | |
643 | scrollSpeed: 15, | |
644 | format: this.SERIALIZE_RULE, | |
19c6deae AD |
645 | |
646 | // these take arrays of elements or ids and can be | |
4b9dfd5b AD |
647 | // used for better initialization performance |
648 | elements: false, | |
649 | handles: false, | |
19c6deae | 650 | |
71d32241 AD |
651 | onChange: Prototype.emptyFunction, |
652 | onUpdate: Prototype.emptyFunction | |
4b9dfd5b | 653 | }, arguments[1] || { }); |
71d32241 AD |
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, | |
4b9dfd5b | 661 | quiet: options.quiet, |
71d32241 AD |
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 | ||
19c6deae | 687 | // build options for the droppables |
71d32241 AD |
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 | |
19c6deae AD |
694 | }; |
695 | ||
71d32241 AD |
696 | var options_for_tree = { |
697 | onHover: Sortable.onEmptyHover, | |
698 | overlap: options.overlap, | |
699 | containment: options.containment, | |
700 | hoverclass: options.hoverclass | |
19c6deae | 701 | }; |
71d32241 AD |
702 | |
703 | // fix for gecko engine | |
19c6deae | 704 | Element.cleanWhitespace(element); |
71d32241 AD |
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 | ||
4b9dfd5b AD |
715 | (options.elements || this.findElements(element, options) || []).each( function(e,i) { |
716 | var handle = options.handles ? $(options.handles[i]) : | |
19c6deae | 717 | (options.handle ? $(e).select('.' + options.handle)[0] : e); |
71d32241 AD |
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; | |
19c6deae | 722 | options.droppables.push(e); |
71d32241 | 723 | }); |
19c6deae | 724 | |
71d32241 AD |
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 | |
19c6deae | 734 | this.sortables[element.identify()] = options; |
71d32241 AD |
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 | }, | |
19c6deae | 746 | |
71d32241 AD |
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); | |
19c6deae | 763 | if(dropon.parentNode!=oldParentNode) |
71d32241 AD |
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); | |
19c6deae | 774 | if(dropon.parentNode!=oldParentNode) |
71d32241 AD |
775 | Sortable.options(oldParentNode).onChange(element); |
776 | Sortable.options(dropon.parentNode).onChange(element); | |
777 | } | |
778 | } | |
779 | }, | |
19c6deae | 780 | |
71d32241 AD |
781 | onEmptyHover: function(element, dropon, overlap) { |
782 | var oldParentNode = element.parentNode; | |
783 | var droponOptions = Sortable.options(dropon); | |
19c6deae | 784 | |
71d32241 AD |
785 | if(!Element.isParent(dropon, element)) { |
786 | var index; | |
19c6deae | 787 | |
71d32241 AD |
788 | var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); |
789 | var child = null; | |
19c6deae | 790 | |
71d32241 AD |
791 | if(children) { |
792 | var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); | |
19c6deae | 793 | |
71d32241 AD |
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 | } | |
19c6deae | 806 | |
71d32241 | 807 | dropon.insertBefore(element, child); |
19c6deae | 808 | |
71d32241 AD |
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); | |
19c6deae | 821 | if(sortable && !sortable.ghosting) return; |
71d32241 AD |
822 | |
823 | if(!Sortable._marker) { | |
19c6deae | 824 | Sortable._marker = |
71d32241 AD |
825 | ($('dropmarker') || Element.extend(document.createElement('DIV'))). |
826 | hide().addClassName('dropmarker').setStyle({position:'absolute'}); | |
827 | document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); | |
19c6deae AD |
828 | } |
829 | var offsets = dropon.cumulativeOffset(); | |
71d32241 | 830 | Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); |
19c6deae | 831 | |
71d32241 | 832 | if(position=='after') |
19c6deae | 833 | if(sortable.overlap == 'horizontal') |
71d32241 AD |
834 | Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); |
835 | else | |
836 | Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); | |
19c6deae | 837 | |
71d32241 AD |
838 | Sortable._marker.show(); |
839 | }, | |
19c6deae | 840 | |
71d32241 AD |
841 | _tree: function(element, options, parent) { |
842 | var children = Sortable.findElements(element, options) || []; | |
19c6deae | 843 | |
71d32241 AD |
844 | for (var i = 0; i < children.length; ++i) { |
845 | var match = children[i].id.match(options.format); | |
846 | ||
847 | if (!match) continue; | |
19c6deae | 848 | |
71d32241 AD |
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) | |
19c6deae AD |
856 | }; |
857 | ||
71d32241 AD |
858 | /* Get the element containing the children and recurse over it */ |
859 | if (child.container) | |
19c6deae AD |
860 | this._tree(child.container, options, child); |
861 | ||
71d32241 AD |
862 | parent.children.push (child); |
863 | } | |
864 | ||
19c6deae | 865 | return parent; |
71d32241 AD |
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 | |
4b9dfd5b | 877 | }, arguments[1] || { }); |
19c6deae | 878 | |
71d32241 AD |
879 | var root = { |
880 | id: null, | |
881 | parent: null, | |
882 | children: [], | |
883 | container: element, | |
884 | position: 0 | |
19c6deae AD |
885 | }; |
886 | ||
71d32241 AD |
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); | |
4b9dfd5b | 901 | var options = Object.extend(this.options(element), arguments[1] || { }); |
19c6deae | 902 | |
71d32241 AD |
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); | |
4b9dfd5b | 910 | var options = Object.extend(this.options(element), arguments[2] || { }); |
19c6deae | 911 | |
4b9dfd5b | 912 | var nodeMap = { }; |
71d32241 AD |
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 | }); | |
19c6deae | 918 | |
71d32241 AD |
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 | }, | |
19c6deae | 927 | |
71d32241 AD |
928 | serialize: function(element) { |
929 | element = $(element); | |
4b9dfd5b | 930 | var options = Object.extend(Sortable.options(element), arguments[1] || { }); |
71d32241 AD |
931 | var name = encodeURIComponent( |
932 | (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); | |
19c6deae | 933 | |
71d32241 AD |
934 | if (options.tree) { |
935 | return Sortable.tree(element, arguments[1]).children.map( function (item) { | |
19c6deae | 936 | return [name + Sortable._constructIndex(item) + "[id]=" + |
71d32241 AD |
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 | } | |
19c6deae | 945 | }; |
71d32241 AD |
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); | |
19c6deae | 952 | }; |
71d32241 | 953 | |
19c6deae | 954 | Element.findChildren = function(element, only, recursive, tagName) { |
71d32241 AD |
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() : []); | |
19c6deae | 970 | }; |
71d32241 AD |
971 | |
972 | Element.offsetSize = function (element, type) { | |
973 | return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; | |
19c6deae | 974 | }; |