Changesets can be listed by changeset number.
The Git repository is here.
- Revision:
- 373
- Log:
Initial import of Radiant 0.9.1, which is now packaged as a gem. This is an
import of the tagged 0.9.1 source checked out from GitHub, which isn't quite
the same as the gem distribution - but it doesn't seem to be available in an
archived form and the installed gem already has modifications, so this is
the closest I can get.
- Author:
- rool
- Date:
- Mon Mar 21 13:40:05 +0000 2011
- Size:
- 31605 Bytes
1 | // script.aculo.us dragdrop.js v1.8.0, Tue Nov 06 15:01:40 +0300 2007 |
2 | |
3 | // Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) |
4 | // (c) 2005-2007 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz) |
5 | // |
6 | // script.aculo.us is freely distributable under the terms of an MIT-style license. |
7 | // For details, see the script.aculo.us web site: http://script.aculo.us/ |
8 | |
9 | if(Object.isUndefined(Effect)) |
10 | throw("dragdrop.js requires including script.aculo.us' effects.js library"); |
11 | |
12 | var Droppables = { |
13 | drops: [], |
14 | |
15 | remove: function(element) { |
16 | this.drops = this.drops.reject(function(d) { return d.element==$(element) }); |
17 | }, |
18 | |
19 | add: function(element) { |
20 | element = $(element); |
21 | var options = Object.extend({ |
22 | greedy: true, |
23 | hoverclass: null, |
24 | tree: false |
25 | }, arguments[1] || { }); |
26 | |
27 | // cache containers |
28 | if(options.containment) { |
29 | options._containers = []; |
30 | var containment = options.containment; |
31 | if(Object.isArray(containment)) { |
32 | containment.each( function(c) { options._containers.push($(c)) }); |
33 | } else { |
34 | options._containers.push($(containment)); |
35 | } |
36 | } |
37 | |
38 | if(options.accept) options.accept = [options.accept].flatten(); |
39 | |
40 | Element.makePositioned(element); // fix IE |
41 | options.element = element; |
42 | |
43 | this.drops.push(options); |
44 | }, |
45 | |
46 | findDeepestChild: function(drops) { |
47 | deepest = drops[0]; |
48 | |
49 | for (i = 1; i < drops.length; ++i) |
50 | if (Element.isParent(drops[i].element, deepest.element)) |
51 | deepest = drops[i]; |
52 | |
53 | return deepest; |
54 | }, |
55 | |
56 | isContained: function(element, drop) { |
57 | var containmentNode; |
58 | if(drop.tree) { |
59 | containmentNode = element.treeNode; |
60 | } else { |
61 | containmentNode = element.parentNode; |
62 | } |
63 | return drop._containers.detect(function(c) { return containmentNode == c }); |
64 | }, |
65 | |
66 | isAffected: function(point, element, drop) { |
67 | return ( |
68 | (drop.element!=element) && |
69 | ((!drop._containers) || |
70 | this.isContained(element, drop)) && |
71 | ((!drop.accept) || |
72 | (Element.classNames(element).detect( |
73 | function(v) { return drop.accept.include(v) } ) )) && |
74 | Position.within(drop.element, point[0], point[1]) ); |
75 | }, |
76 | |
77 | deactivate: function(drop) { |
78 | if(drop.hoverclass) |
79 | Element.removeClassName(drop.element, drop.hoverclass); |
80 | this.last_active = null; |
81 | }, |
82 | |
83 | activate: function(drop) { |
84 | if(drop.hoverclass) |
85 | Element.addClassName(drop.element, drop.hoverclass); |
86 | this.last_active = drop; |
87 | }, |
88 | |
89 | show: function(point, element) { |
90 | if(!this.drops.length) return; |
91 | var drop, affected = []; |
92 | |
93 | this.drops.each( function(drop) { |
94 | if(Droppables.isAffected(point, element, drop)) |
95 | affected.push(drop); |
96 | }); |
97 | |
98 | if(affected.length>0) |
99 | drop = Droppables.findDeepestChild(affected); |
100 | |
101 | if(this.last_active && this.last_active != drop) this.deactivate(this.last_active); |
102 | if (drop) { |
103 | Position.within(drop.element, point[0], point[1]); |
104 | if(drop.onHover) |
105 | drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); |
106 | |
107 | if (drop != this.last_active) Droppables.activate(drop); |
108 | } |
109 | }, |
110 | |
111 | fire: function(event, element) { |
112 | if(!this.last_active) return; |
113 | Position.prepare(); |
114 | |
115 | if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active)) |
116 | if (this.last_active.onDrop) { |
117 | this.last_active.onDrop(element, this.last_active.element, event); |
118 | return true; |
119 | } |
120 | }, |
121 | |
122 | reset: function() { |
123 | if(this.last_active) |
124 | this.deactivate(this.last_active); |
125 | } |
126 | } |
127 | |
128 | var Draggables = { |
129 | drags: [], |
130 | observers: [], |
131 | |
132 | register: function(draggable) { |
133 | if(this.drags.length == 0) { |
134 | this.eventMouseUp = this.endDrag.bindAsEventListener(this); |
135 | this.eventMouseMove = this.updateDrag.bindAsEventListener(this); |
136 | this.eventKeypress = this.keyPress.bindAsEventListener(this); |
137 | |
138 | Event.observe(document, "mouseup", this.eventMouseUp); |
139 | Event.observe(document, "mousemove", this.eventMouseMove); |
140 | Event.observe(document, "keypress", this.eventKeypress); |
141 | } |
142 | this.drags.push(draggable); |
143 | }, |
144 | |
145 | unregister: function(draggable) { |
146 | this.drags = this.drags.reject(function(d) { return d==draggable }); |
147 | if(this.drags.length == 0) { |
148 | Event.stopObserving(document, "mouseup", this.eventMouseUp); |
149 | Event.stopObserving(document, "mousemove", this.eventMouseMove); |
150 | Event.stopObserving(document, "keypress", this.eventKeypress); |
151 | } |
152 | }, |
153 | |
154 | activate: function(draggable) { |
155 | if(draggable.options.delay) { |
156 | this._timeout = setTimeout(function() { |
157 | Draggables._timeout = null; |
158 | window.focus(); |
159 | Draggables.activeDraggable = draggable; |
160 | }.bind(this), draggable.options.delay); |
161 | } else { |
162 | window.focus(); // allows keypress events if window isn't currently focused, fails for Safari |
163 | this.activeDraggable = draggable; |
164 | } |
165 | }, |
166 | |
167 | deactivate: function() { |
168 | this.activeDraggable = null; |
169 | }, |
170 | |
171 | updateDrag: function(event) { |
172 | if(!this.activeDraggable) return; |
173 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
174 | // Mozilla-based browsers fire successive mousemove events with |
175 | // the same coordinates, prevent needless redrawing (moz bug?) |
176 | if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return; |
177 | this._lastPointer = pointer; |
178 | |
179 | this.activeDraggable.updateDrag(event, pointer); |
180 | }, |
181 | |
182 | endDrag: function(event) { |
183 | if(this._timeout) { |
184 | clearTimeout(this._timeout); |
185 | this._timeout = null; |
186 | } |
187 | if(!this.activeDraggable) return; |
188 | this._lastPointer = null; |
189 | this.activeDraggable.endDrag(event); |
190 | this.activeDraggable = null; |
191 | }, |
192 | |
193 | keyPress: function(event) { |
194 | if(this.activeDraggable) |
195 | this.activeDraggable.keyPress(event); |
196 | }, |
197 | |
198 | addObserver: function(observer) { |
199 | this.observers.push(observer); |
200 | this._cacheObserverCallbacks(); |
201 | }, |
202 | |
203 | removeObserver: function(element) { // element instead of observer fixes mem leaks |
204 | this.observers = this.observers.reject( function(o) { return o.element==element }); |
205 | this._cacheObserverCallbacks(); |
206 | }, |
207 | |
208 | notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag' |
209 | if(this[eventName+'Count'] > 0) |
210 | this.observers.each( function(o) { |
211 | if(o[eventName]) o[eventName](eventName, draggable, event); |
212 | }); |
213 | if(draggable.options[eventName]) draggable.options[eventName](draggable, event); |
214 | }, |
215 | |
216 | _cacheObserverCallbacks: function() { |
217 | ['onStart','onEnd','onDrag'].each( function(eventName) { |
218 | Draggables[eventName+'Count'] = Draggables.observers.select( |
219 | function(o) { return o[eventName]; } |
220 | ).length; |
221 | }); |
222 | } |
223 | } |
224 | |
225 | /*--------------------------------------------------------------------------*/ |
226 | |
227 | var Draggable = Class.create({ |
228 | initialize: function(element) { |
229 | var defaults = { |
230 | handle: false, |
231 | reverteffect: function(element, top_offset, left_offset) { |
232 | var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02; |
233 | new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur, |
234 | queue: {scope:'_draggable', position:'end'} |
235 | }); |
236 | }, |
237 | endeffect: function(element) { |
238 | var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0; |
239 | new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, |
240 | queue: {scope:'_draggable', position:'end'}, |
241 | afterFinish: function(){ |
242 | Draggable._dragging[element] = false |
243 | } |
244 | }); |
245 | }, |
246 | zindex: 1000, |
247 | revert: false, |
248 | quiet: false, |
249 | scroll: false, |
250 | scrollSensitivity: 20, |
251 | scrollSpeed: 15, |
252 | snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] } |
253 | delay: 0 |
254 | }; |
255 | |
256 | if(!arguments[1] || Object.isUndefined(arguments[1].endeffect)) |
257 | Object.extend(defaults, { |
258 | starteffect: function(element) { |
259 | element._opacity = Element.getOpacity(element); |
260 | Draggable._dragging[element] = true; |
261 | new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); |
262 | } |
263 | }); |
264 | |
265 | var options = Object.extend(defaults, arguments[1] || { }); |
266 | |
267 | this.element = $(element); |
268 | |
269 | if(options.handle && Object.isString(options.handle)) |
270 | this.handle = this.element.down('.'+options.handle, 0); |
271 | |
272 | if(!this.handle) this.handle = $(options.handle); |
273 | if(!this.handle) this.handle = this.element; |
274 | |
275 | if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) { |
276 | options.scroll = $(options.scroll); |
277 | this._isScrollChild = Element.childOf(this.element, options.scroll); |
278 | } |
279 | |
280 | Element.makePositioned(this.element); // fix IE |
281 | |
282 | this.options = options; |
283 | this.dragging = false; |
284 | |
285 | this.eventMouseDown = this.initDrag.bindAsEventListener(this); |
286 | Event.observe(this.handle, "mousedown", this.eventMouseDown); |
287 | |
288 | Draggables.register(this); |
289 | }, |
290 | |
291 | destroy: function() { |
292 | Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); |
293 | Draggables.unregister(this); |
294 | }, |
295 | |
296 | currentDelta: function() { |
297 | return([ |
298 | parseInt(Element.getStyle(this.element,'left') || '0'), |
299 | parseInt(Element.getStyle(this.element,'top') || '0')]); |
300 | }, |
301 | |
302 | initDrag: function(event) { |
303 | if(!Object.isUndefined(Draggable._dragging[this.element]) && |
304 | Draggable._dragging[this.element]) return; |
305 | if(Event.isLeftClick(event)) { |
306 | // abort on form elements, fixes a Firefox issue |
307 | var src = Event.element(event); |
308 | if((tag_name = src.tagName.toUpperCase()) && ( |
309 | tag_name=='INPUT' || |
310 | tag_name=='SELECT' || |
311 | tag_name=='OPTION' || |
312 | tag_name=='BUTTON' || |
313 | tag_name=='TEXTAREA')) return; |
314 | |
315 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
316 | var pos = Position.cumulativeOffset(this.element); |
317 | this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) }); |
318 | |
319 | Draggables.activate(this); |
320 | Event.stop(event); |
321 | } |
322 | }, |
323 | |
324 | startDrag: function(event) { |
325 | this.dragging = true; |
326 | if(!this.delta) |
327 | this.delta = this.currentDelta(); |
328 | |
329 | if(this.options.zindex) { |
330 | this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); |
331 | this.element.style.zIndex = this.options.zindex; |
332 | } |
333 | |
334 | if(this.options.ghosting) { |
335 | this._clone = this.element.cloneNode(true); |
336 | this.element._originallyAbsolute = (this.element.getStyle('position') == 'absolute'); |
337 | if (!this.element._originallyAbsolute) |
338 | Position.absolutize(this.element); |
339 | this.element.parentNode.insertBefore(this._clone, this.element); |
340 | } |
341 | |
342 | if(this.options.scroll) { |
343 | if (this.options.scroll == window) { |
344 | var where = this._getWindowScroll(this.options.scroll); |
345 | this.originalScrollLeft = where.left; |
346 | this.originalScrollTop = where.top; |
347 | } else { |
348 | this.originalScrollLeft = this.options.scroll.scrollLeft; |
349 | this.originalScrollTop = this.options.scroll.scrollTop; |
350 | } |
351 | } |
352 | |
353 | Draggables.notify('onStart', this, event); |
354 | |
355 | if(this.options.starteffect) this.options.starteffect(this.element); |
356 | }, |
357 | |
358 | updateDrag: function(event, pointer) { |
359 | if(!this.dragging) this.startDrag(event); |
360 | |
361 | if(!this.options.quiet){ |
362 | Position.prepare(); |
363 | Droppables.show(pointer, this.element); |
364 | } |
365 | |
366 | Draggables.notify('onDrag', this, event); |
367 | |
368 | this.draw(pointer); |
369 | if(this.options.change) this.options.change(this); |
370 | |
371 | if(this.options.scroll) { |
372 | this.stopScrolling(); |
373 | |
374 | var p; |
375 | if (this.options.scroll == window) { |
376 | with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; } |
377 | } else { |
378 | p = Position.page(this.options.scroll); |
379 | p[0] += this.options.scroll.scrollLeft + Position.deltaX; |
380 | p[1] += this.options.scroll.scrollTop + Position.deltaY; |
381 | p.push(p[0]+this.options.scroll.offsetWidth); |
382 | p.push(p[1]+this.options.scroll.offsetHeight); |
383 | } |
384 | var speed = [0,0]; |
385 | if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity); |
386 | if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity); |
387 | if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity); |
388 | if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity); |
389 | this.startScrolling(speed); |
390 | } |
391 | |
392 | // fix AppleWebKit rendering |
393 | if(Prototype.Browser.WebKit) window.scrollBy(0,0); |
394 | |
395 | Event.stop(event); |
396 | }, |
397 | |
398 | finishDrag: function(event, success) { |
399 | this.dragging = false; |
400 | |
401 | if(this.options.quiet){ |
402 | Position.prepare(); |
403 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
404 | Droppables.show(pointer, this.element); |
405 | } |
406 | |
407 | if(this.options.ghosting) { |
408 | if (!this.element._originallyAbsolute) |
409 | Position.relativize(this.element); |
410 | delete this.element._originallyAbsolute; |
411 | Element.remove(this._clone); |
412 | this._clone = null; |
413 | } |
414 | |
415 | var dropped = false; |
416 | if(success) { |
417 | dropped = Droppables.fire(event, this.element); |
418 | if (!dropped) dropped = false; |
419 | } |
420 | if(dropped && this.options.onDropped) this.options.onDropped(this.element); |
421 | Draggables.notify('onEnd', this, event); |
422 | |
423 | var revert = this.options.revert; |
424 | if(revert && Object.isFunction(revert)) revert = revert(this.element); |
425 | |
426 | var d = this.currentDelta(); |
427 | if(revert && this.options.reverteffect) { |
428 | if (dropped == 0 || revert != 'failure') |
429 | this.options.reverteffect(this.element, |
430 | d[1]-this.delta[1], d[0]-this.delta[0]); |
431 | } else { |
432 | this.delta = d; |
433 | } |
434 | |
435 | if(this.options.zindex) |
436 | this.element.style.zIndex = this.originalZ; |
437 | |
438 | if(this.options.endeffect) |
439 | this.options.endeffect(this.element); |
440 | |
441 | Draggables.deactivate(this); |
442 | Droppables.reset(); |
443 | }, |
444 | |
445 | keyPress: function(event) { |
446 | if(event.keyCode!=Event.KEY_ESC) return; |
447 | this.finishDrag(event, false); |
448 | Event.stop(event); |
449 | }, |
450 | |
451 | endDrag: function(event) { |
452 | if(!this.dragging) return; |
453 | this.stopScrolling(); |
454 | this.finishDrag(event, true); |
455 | Event.stop(event); |
456 | }, |
457 | |
458 | draw: function(point) { |
459 | var pos = Position.cumulativeOffset(this.element); |
460 | if(this.options.ghosting) { |
461 | var r = Position.realOffset(this.element); |
462 | pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; |
463 | } |
464 | |
465 | var d = this.currentDelta(); |
466 | pos[0] -= d[0]; pos[1] -= d[1]; |
467 | |
468 | if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) { |
469 | pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft; |
470 | pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop; |
471 | } |
472 | |
473 | var p = [0,1].map(function(i){ |
474 | return (point[i]-pos[i]-this.offset[i]) |
475 | }.bind(this)); |
476 | |
477 | if(this.options.snap) { |
478 | if(Object.isFunction(this.options.snap)) { |
479 | p = this.options.snap(p[0],p[1],this); |
480 | } else { |
481 | if(Object.isArray(this.options.snap)) { |
482 | p = p.map( function(v, i) { |
483 | return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this)) |
484 | } else { |
485 | p = p.map( function(v) { |
486 | return (v/this.options.snap).round()*this.options.snap }.bind(this)) |
487 | } |
488 | }} |
489 | |
490 | var style = this.element.style; |
491 | if((!this.options.constraint) || (this.options.constraint=='horizontal')) |
492 | style.left = p[0] + "px"; |
493 | if((!this.options.constraint) || (this.options.constraint=='vertical')) |
494 | style.top = p[1] + "px"; |
495 | |
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 | var s = Sortable.options(element); |
614 | |
615 | if(s) { |
616 | Draggables.removeObserver(s.element); |
617 | s.droppables.each(function(d){ Droppables.remove(d) }); |
618 | s.draggables.invoke('destroy'); |
619 | |
620 | delete Sortable.sortables[s.element.id]; |
621 | } |
622 | }, |
623 | |
624 | create: function(element) { |
625 | element = $(element); |
626 | var options = Object.extend({ |
627 | element: element, |
628 | tag: 'li', // assumes li children, override with tag: 'tagname' |
629 | dropOnEmpty: false, |
630 | tree: false, |
631 | treeTag: 'ul', |
632 | overlap: 'vertical', // one of 'vertical', 'horizontal' |
633 | constraint: 'vertical', // one of 'vertical', 'horizontal', false |
634 | containment: element, // also takes array of elements (or id's); or false |
635 | handle: false, // or a CSS class |
636 | only: false, |
637 | delay: 0, |
638 | hoverclass: null, |
639 | ghosting: false, |
640 | quiet: false, |
641 | scroll: false, |
642 | scrollSensitivity: 20, |
643 | scrollSpeed: 15, |
644 | format: this.SERIALIZE_RULE, |
645 | |
646 | // these take arrays of elements or ids and can be |
647 | // used for better initialization performance |
648 | elements: false, |
649 | handles: false, |
650 | |
651 | onChange: Prototype.emptyFunction, |
652 | onUpdate: Prototype.emptyFunction |
653 | }, arguments[1] || { }); |
654 | |
655 | // clear any old sortable with same element |
656 | this.destroy(element); |
657 | |
658 | // build options for the draggables |
659 | var options_for_draggable = { |
660 | revert: true, |
661 | quiet: options.quiet, |
662 | scroll: options.scroll, |
663 | scrollSpeed: options.scrollSpeed, |
664 | scrollSensitivity: options.scrollSensitivity, |
665 | delay: options.delay, |
666 | ghosting: options.ghosting, |
667 | constraint: options.constraint, |
668 | handle: options.handle }; |
669 | |
670 | if(options.starteffect) |
671 | options_for_draggable.starteffect = options.starteffect; |
672 | |
673 | if(options.reverteffect) |
674 | options_for_draggable.reverteffect = options.reverteffect; |
675 | else |
676 | if(options.ghosting) options_for_draggable.reverteffect = function(element) { |
677 | element.style.top = 0; |
678 | element.style.left = 0; |
679 | }; |
680 | |
681 | if(options.endeffect) |
682 | options_for_draggable.endeffect = options.endeffect; |
683 | |
684 | if(options.zindex) |
685 | options_for_draggable.zindex = options.zindex; |
686 | |
687 | // build options for the droppables |
688 | var options_for_droppable = { |
689 | overlap: options.overlap, |
690 | containment: options.containment, |
691 | tree: options.tree, |
692 | hoverclass: options.hoverclass, |
693 | onHover: Sortable.onHover |
694 | } |
695 | |
696 | var options_for_tree = { |
697 | onHover: Sortable.onEmptyHover, |
698 | overlap: options.overlap, |
699 | containment: options.containment, |
700 | hoverclass: options.hoverclass |
701 | } |
702 | |
703 | // fix for gecko engine |
704 | Element.cleanWhitespace(element); |
705 | |
706 | options.draggables = []; |
707 | options.droppables = []; |
708 | |
709 | // drop on empty handling |
710 | if(options.dropOnEmpty || options.tree) { |
711 | Droppables.add(element, options_for_tree); |
712 | options.droppables.push(element); |
713 | } |
714 | |
715 | (options.elements || this.findElements(element, options) || []).each( function(e,i) { |
716 | var handle = options.handles ? $(options.handles[i]) : |
717 | (options.handle ? $(e).select('.' + options.handle)[0] : e); |
718 | options.draggables.push( |
719 | new Draggable(e, Object.extend(options_for_draggable, { handle: handle }))); |
720 | Droppables.add(e, options_for_droppable); |
721 | if(options.tree) e.treeNode = element; |
722 | options.droppables.push(e); |
723 | }); |
724 | |
725 | if(options.tree) { |
726 | (Sortable.findTreeElements(element, options) || []).each( function(e) { |
727 | Droppables.add(e, options_for_tree); |
728 | e.treeNode = element; |
729 | options.droppables.push(e); |
730 | }); |
731 | } |
732 | |
733 | // keep reference |
734 | this.sortables[element.id] = options; |
735 | |
736 | // for onupdate |
737 | Draggables.addObserver(new SortableObserver(element, options.onUpdate)); |
738 | |
739 | }, |
740 | |
741 | // return all suitable-for-sortable elements in a guaranteed order |
742 | findElements: function(element, options) { |
743 | return Element.findChildren( |
744 | element, options.only, options.tree ? true : false, options.tag); |
745 | }, |
746 | |
747 | findTreeElements: function(element, options) { |
748 | return Element.findChildren( |
749 | element, options.only, options.tree ? true : false, options.treeTag); |
750 | }, |
751 | |
752 | onHover: function(element, dropon, overlap) { |
753 | if(Element.isParent(dropon, element)) return; |
754 | |
755 | if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) { |
756 | return; |
757 | } else if(overlap>0.5) { |
758 | Sortable.mark(dropon, 'before'); |
759 | if(dropon.previousSibling != element) { |
760 | var oldParentNode = element.parentNode; |
761 | element.style.visibility = "hidden"; // fix gecko rendering |
762 | dropon.parentNode.insertBefore(element, dropon); |
763 | if(dropon.parentNode!=oldParentNode) |
764 | Sortable.options(oldParentNode).onChange(element); |
765 | Sortable.options(dropon.parentNode).onChange(element); |
766 | } |
767 | } else { |
768 | Sortable.mark(dropon, 'after'); |
769 | var nextElement = dropon.nextSibling || null; |
770 | if(nextElement != element) { |
771 | var oldParentNode = element.parentNode; |
772 | element.style.visibility = "hidden"; // fix gecko rendering |
773 | dropon.parentNode.insertBefore(element, nextElement); |
774 | if(dropon.parentNode!=oldParentNode) |
775 | Sortable.options(oldParentNode).onChange(element); |
776 | Sortable.options(dropon.parentNode).onChange(element); |
777 | } |
778 | } |
779 | }, |
780 | |
781 | onEmptyHover: function(element, dropon, overlap) { |
782 | var oldParentNode = element.parentNode; |
783 | var droponOptions = Sortable.options(dropon); |
784 | |
785 | if(!Element.isParent(dropon, element)) { |
786 | var index; |
787 | |
788 | var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); |
789 | var child = null; |
790 | |
791 | if(children) { |
792 | var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); |
793 | |
794 | for (index = 0; index < children.length; index += 1) { |
795 | if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) { |
796 | offset -= Element.offsetSize (children[index], droponOptions.overlap); |
797 | } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) { |
798 | child = index + 1 < children.length ? children[index + 1] : null; |
799 | break; |
800 | } else { |
801 | child = children[index]; |
802 | break; |
803 | } |
804 | } |
805 | } |
806 | |
807 | dropon.insertBefore(element, child); |
808 | |
809 | Sortable.options(oldParentNode).onChange(element); |
810 | droponOptions.onChange(element); |
811 | } |
812 | }, |
813 | |
814 | unmark: function() { |
815 | if(Sortable._marker) Sortable._marker.hide(); |
816 | }, |
817 | |
818 | mark: function(dropon, position) { |
819 | // mark on ghosting only |
820 | var sortable = Sortable.options(dropon.parentNode); |
821 | if(sortable && !sortable.ghosting) return; |
822 | |
823 | if(!Sortable._marker) { |
824 | Sortable._marker = |
825 | ($('dropmarker') || Element.extend(document.createElement('DIV'))). |
826 | hide().addClassName('dropmarker').setStyle({position:'absolute'}); |
827 | document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); |
828 | } |
829 | var offsets = Position.cumulativeOffset(dropon); |
830 | Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); |
831 | |
832 | if(position=='after') |
833 | if(sortable.overlap == 'horizontal') |
834 | Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); |
835 | else |
836 | Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); |
837 | |
838 | Sortable._marker.show(); |
839 | }, |
840 | |
841 | _tree: function(element, options, parent) { |
842 | var children = Sortable.findElements(element, options) || []; |
843 | |
844 | for (var i = 0; i < children.length; ++i) { |
845 | var match = children[i].id.match(options.format); |
846 | |
847 | if (!match) continue; |
848 | |
849 | var child = { |
850 | id: encodeURIComponent(match ? match[1] : null), |
851 | element: element, |
852 | parent: parent, |
853 | children: [], |
854 | position: parent.children.length, |
855 | container: $(children[i]).down(options.treeTag) |
856 | } |
857 | |
858 | /* Get the element containing the children and recurse over it */ |
859 | if (child.container) |
860 | this._tree(child.container, options, child) |
861 | |
862 | parent.children.push (child); |
863 | } |
864 | |
865 | return parent; |
866 | }, |
867 | |
868 | tree: function(element) { |
869 | element = $(element); |
870 | var sortableOptions = this.options(element); |
871 | var options = Object.extend({ |
872 | tag: sortableOptions.tag, |
873 | treeTag: sortableOptions.treeTag, |
874 | only: sortableOptions.only, |
875 | name: element.id, |
876 | format: sortableOptions.format |
877 | }, arguments[1] || { }); |
878 | |
879 | var root = { |
880 | id: null, |
881 | parent: null, |
882 | children: [], |
883 | container: element, |
884 | position: 0 |
885 | } |
886 | |
887 | return Sortable._tree(element, options, root); |
888 | }, |
889 | |
890 | /* Construct a [i] index for a particular node */ |
891 | _constructIndex: function(node) { |
892 | var index = ''; |
893 | do { |
894 | if (node.id) index = '[' + node.position + ']' + index; |
895 | } while ((node = node.parent) != null); |
896 | return index; |
897 | }, |
898 | |
899 | sequence: function(element) { |
900 | element = $(element); |
901 | var options = Object.extend(this.options(element), arguments[1] || { }); |
902 | |
903 | return $(this.findElements(element, options) || []).map( function(item) { |
904 | return item.id.match(options.format) ? item.id.match(options.format)[1] : ''; |
905 | }); |
906 | }, |
907 | |
908 | setSequence: function(element, new_sequence) { |
909 | element = $(element); |
910 | var options = Object.extend(this.options(element), arguments[2] || { }); |
911 | |
912 | var nodeMap = { }; |
913 | this.findElements(element, options).each( function(n) { |
914 | if (n.id.match(options.format)) |
915 | nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode]; |
916 | n.parentNode.removeChild(n); |
917 | }); |
918 | |
919 | new_sequence.each(function(ident) { |
920 | var n = nodeMap[ident]; |
921 | if (n) { |
922 | n[1].appendChild(n[0]); |
923 | delete nodeMap[ident]; |
924 | } |
925 | }); |
926 | }, |
927 | |
928 | serialize: function(element) { |
929 | element = $(element); |
930 | var options = Object.extend(Sortable.options(element), arguments[1] || { }); |
931 | var name = encodeURIComponent( |
932 | (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); |
933 | |
934 | if (options.tree) { |
935 | return Sortable.tree(element, arguments[1]).children.map( function (item) { |
936 | return [name + Sortable._constructIndex(item) + "[id]=" + |
937 | encodeURIComponent(item.id)].concat(item.children.map(arguments.callee)); |
938 | }).flatten().join('&'); |
939 | } else { |
940 | return Sortable.sequence(element, arguments[1]).map( function(item) { |
941 | return name + "[]=" + encodeURIComponent(item); |
942 | }).join('&'); |
943 | } |
944 | } |
945 | } |
946 | |
947 | // Returns true if child is contained within element |
948 | Element.isParent = function(child, element) { |
949 | if (!child.parentNode || child == element) return false; |
950 | if (child.parentNode == element) return true; |
951 | return Element.isParent(child.parentNode, element); |
952 | } |
953 | |
954 | Element.findChildren = function(element, only, recursive, tagName) { |
955 | if(!element.hasChildNodes()) return null; |
956 | tagName = tagName.toUpperCase(); |
957 | if(only) only = [only].flatten(); |
958 | var elements = []; |
959 | $A(element.childNodes).each( function(e) { |
960 | if(e.tagName && e.tagName.toUpperCase()==tagName && |
961 | (!only || (Element.classNames(e).detect(function(v) { return only.include(v) })))) |
962 | elements.push(e); |
963 | if(recursive) { |
964 | var grandchildren = Element.findChildren(e, only, recursive, tagName); |
965 | if(grandchildren) elements.push(grandchildren); |
966 | } |
967 | }); |
968 | |
969 | return (elements.length>0 ? elements.flatten() : []); |
970 | } |
971 | |
972 | Element.offsetSize = function (element, type) { |
973 | return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; |
974 | } |