]>
Commit | Line | Data |
---|---|---|
4b9dfd5b | 1 | // script.aculo.us dragdrop.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008 |
71d32241 | 2 | |
4b9dfd5b AD |
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) | |
71d32241 AD |
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 | ||
4b9dfd5b | 9 | if(Object.isUndefined(Effect)) |
71d32241 AD |
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 = $(element); | |
21 | var options = Object.extend({ | |
22 | greedy: true, | |
23 | hoverclass: null, | |
24 | tree: false | |
4b9dfd5b | 25 | }, arguments[1] || { }); |
71d32241 AD |
26 | |
27 | // cache containers | |
28 | if(options.containment) { | |
29 | options._containers = []; | |
30 | var containment = options.containment; | |
4b9dfd5b | 31 | if(Object.isArray(containment)) { |
71d32241 AD |
32 | containment.each( function(c) { options._containers.push($(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; | |
4b9dfd5b | 91 | var drop, affected = []; |
71d32241 | 92 | |
71d32241 AD |
93 | this.drops.each( function(drop) { |
94 | if(Droppables.isAffected(point, element, drop)) | |
95 | affected.push(drop); | |
96 | }); | |
97 | ||
4b9dfd5b | 98 | if(affected.length>0) |
71d32241 | 99 | drop = Droppables.findDeepestChild(affected); |
4b9dfd5b AD |
100 | |
101 | if(this.last_active && this.last_active != drop) this.deactivate(this.last_active); | |
102 | if (drop) { | |
71d32241 AD |
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 | ||
4b9dfd5b | 107 | if (drop != this.last_active) Droppables.activate(drop); |
71d32241 AD |
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)) | |
4b9dfd5b AD |
116 | if (this.last_active.onDrop) { |
117 | this.last_active.onDrop(element, this.last_active.element, event); | |
118 | return true; | |
119 | } | |
71d32241 AD |
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 | ||
4b9dfd5b | 227 | var Draggable = Class.create({ |
71d32241 AD |
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) { | |
4b9dfd5b | 238 | var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0; |
71d32241 AD |
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, | |
4b9dfd5b | 248 | quiet: false, |
71d32241 AD |
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 | ||
4b9dfd5b | 256 | if(!arguments[1] || Object.isUndefined(arguments[1].endeffect)) |
71d32241 AD |
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 | ||
4b9dfd5b | 265 | var options = Object.extend(defaults, arguments[1] || { }); |
71d32241 AD |
266 | |
267 | this.element = $(element); | |
268 | ||
4b9dfd5b | 269 | if(options.handle && Object.isString(options.handle)) |
71d32241 AD |
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 | ||
71d32241 AD |
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) { | |
4b9dfd5b | 303 | if(!Object.isUndefined(Draggable._dragging[this.element]) && |
71d32241 AD |
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; | |
4b9dfd5b AD |
326 | if(!this.delta) |
327 | this.delta = this.currentDelta(); | |
71d32241 AD |
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); | |
4b9dfd5b AD |
336 | this.element._originallyAbsolute = (this.element.getStyle('position') == 'absolute'); |
337 | if (!this.element._originallyAbsolute) | |
338 | Position.absolutize(this.element); | |
71d32241 AD |
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); | |
4b9dfd5b AD |
360 | |
361 | if(!this.options.quiet){ | |
362 | Position.prepare(); | |
363 | Droppables.show(pointer, this.element); | |
364 | } | |
365 | ||
71d32241 AD |
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 | |
4b9dfd5b | 393 | if(Prototype.Browser.WebKit) window.scrollBy(0,0); |
71d32241 AD |
394 | |
395 | Event.stop(event); | |
396 | }, | |
397 | ||
398 | finishDrag: function(event, success) { | |
399 | this.dragging = false; | |
4b9dfd5b AD |
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 | } | |
71d32241 AD |
406 | |
407 | if(this.options.ghosting) { | |
4b9dfd5b AD |
408 | if (!this.element._originallyAbsolute) |
409 | Position.relativize(this.element); | |
410 | delete this.element._originallyAbsolute; | |
71d32241 AD |
411 | Element.remove(this._clone); |
412 | this._clone = null; | |
413 | } | |
414 | ||
4b9dfd5b AD |
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); | |
71d32241 AD |
421 | Draggables.notify('onEnd', this, event); |
422 | ||
423 | var revert = this.options.revert; | |
4b9dfd5b | 424 | if(revert && Object.isFunction(revert)) revert = revert(this.element); |
71d32241 AD |
425 | |
426 | var d = this.currentDelta(); | |
427 | if(revert && this.options.reverteffect) { | |
4b9dfd5b AD |
428 | if (dropped == 0 || revert != 'failure') |
429 | this.options.reverteffect(this.element, | |
430 | d[1]-this.delta[1], d[0]-this.delta[0]); | |
71d32241 AD |
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) { | |
4b9dfd5b | 478 | if(Object.isFunction(this.options.snap)) { |
71d32241 AD |
479 | p = this.options.snap(p[0],p[1],this); |
480 | } else { | |
4b9dfd5b | 481 | if(Object.isArray(this.options.snap)) { |
71d32241 | 482 | p = p.map( function(v, i) { |
4b9dfd5b | 483 | return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this)) |
71d32241 AD |
484 | } else { |
485 | p = p.map( function(v) { | |
4b9dfd5b | 486 | return (v/this.options.snap).round()*this.options.snap }.bind(this)) |
71d32241 AD |
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 | } | |
4b9dfd5b AD |
570 | }); |
571 | ||
572 | Draggable._dragging = { }; | |
71d32241 AD |
573 | |
574 | /*--------------------------------------------------------------------------*/ | |
575 | ||
4b9dfd5b | 576 | var SortableObserver = Class.create({ |
71d32241 AD |
577 | initialize: function(element, observer) { |
578 | this.element = $(element); | |
579 | this.observer = observer; | |
580 | this.lastValue = Sortable.serialize(this.element); | |
581 | }, | |
582 | ||
583 | onStart: function() { | |
584 | this.lastValue = Sortable.serialize(this.element); | |
585 | }, | |
586 | ||
587 | onEnd: function() { | |
588 | Sortable.unmark(); | |
589 | if(this.lastValue != Sortable.serialize(this.element)) | |
590 | this.observer(this.element) | |
591 | } | |
4b9dfd5b | 592 | }); |
71d32241 AD |
593 | |
594 | var Sortable = { | |
595 | SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, | |
596 | ||
4b9dfd5b | 597 | sortables: { }, |
71d32241 AD |
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, | |
4b9dfd5b | 640 | quiet: false, |
71d32241 AD |
641 | scroll: false, |
642 | scrollSensitivity: 20, | |
643 | scrollSpeed: 15, | |
644 | format: this.SERIALIZE_RULE, | |
4b9dfd5b AD |
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 | ||
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 | ||
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 | ||
4b9dfd5b AD |
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); | |
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; | |
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 | |
4b9dfd5b | 877 | }, arguments[1] || { }); |
71d32241 AD |
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); | |
4b9dfd5b | 901 | var options = Object.extend(this.options(element), arguments[1] || { }); |
71d32241 AD |
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); | |
4b9dfd5b | 910 | var options = Object.extend(this.options(element), arguments[2] || { }); |
71d32241 | 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 | }); | |
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); | |
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); | |
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 | ||
4b9dfd5b | 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() : []); | |
970 | } | |
971 | ||
972 | Element.offsetSize = function (element, type) { | |
973 | return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; | |
974 | } |