Changesets can be listed by changeset number.
The Git repository is here.
- Revision:
- 319
- Log:
Collaboa was updated to a newer Prototype library ages ago, but the
check-in got overlooked. Added standard blank template "application.js"
since a clean SVN checkout would otherwise lead to 404 errors from the
template inclusion of JavaScript ":defaults".
- Author:
- rool
- Date:
- Fri Mar 18 14:36:23 +0000 2011
- Size:
- 31103 Bytes
| 1 | // Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us) |
| 2 | // (c) 2005-2008 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz) |
| 3 | // |
| 4 | // script.aculo.us is freely distributable under the terms of an MIT-style license. |
| 5 | // For details, see the script.aculo.us web site: http://script.aculo.us/ |
| 6 | |
| 7 | if(Object.isUndefined(Effect)) |
| 8 | throw("dragdrop.js requires including script.aculo.us' effects.js library"); |
| 9 | |
| 10 | var Droppables = { |
| 11 | drops: [], |
| 12 | |
| 13 | remove: function(element) { |
| 14 | this.drops = this.drops.reject(function(d) { return d.element==$(element) }); |
| 15 | }, |
| 16 | |
| 17 | add: function(element) { |
| 18 | element = $(element); |
| 19 | var options = Object.extend({ |
| 20 | greedy: true, |
| 21 | hoverclass: null, |
| 22 | tree: false |
| 23 | }, arguments[1] || { }); |
| 24 | |
| 25 | // cache containers |
| 26 | if(options.containment) { |
| 27 | options._containers = []; |
| 28 | var containment = options.containment; |
| 29 | if(Object.isArray(containment)) { |
| 30 | containment.each( function(c) { options._containers.push($(c)) }); |
| 31 | } else { |
| 32 | options._containers.push($(containment)); |
| 33 | } |
| 34 | } |
| 35 | |
| 36 | if(options.accept) options.accept = [options.accept].flatten(); |
| 37 | |
| 38 | Element.makePositioned(element); // fix IE |
| 39 | options.element = element; |
| 40 | |
| 41 | this.drops.push(options); |
| 42 | }, |
| 43 | |
| 44 | findDeepestChild: function(drops) { |
| 45 | deepest = drops[0]; |
| 46 | |
| 47 | for (i = 1; i < drops.length; ++i) |
| 48 | if (Element.isParent(drops[i].element, deepest.element)) |
| 49 | deepest = drops[i]; |
| 50 | |
| 51 | return deepest; |
| 52 | }, |
| 53 | |
| 54 | isContained: function(element, drop) { |
| 55 | var containmentNode; |
| 56 | if(drop.tree) { |
| 57 | containmentNode = element.treeNode; |
| 58 | } else { |
| 59 | containmentNode = element.parentNode; |
| 60 | } |
| 61 | return drop._containers.detect(function(c) { return containmentNode == c }); |
| 62 | }, |
| 63 | |
| 64 | isAffected: function(point, element, drop) { |
| 65 | return ( |
| 66 | (drop.element!=element) && |
| 67 | ((!drop._containers) || |
| 68 | this.isContained(element, drop)) && |
| 69 | ((!drop.accept) || |
| 70 | (Element.classNames(element).detect( |
| 71 | function(v) { return drop.accept.include(v) } ) )) && |
| 72 | Position.within(drop.element, point[0], point[1]) ); |
| 73 | }, |
| 74 | |
| 75 | deactivate: function(drop) { |
| 76 | if(drop.hoverclass) |
| 77 | Element.removeClassName(drop.element, drop.hoverclass); |
| 78 | this.last_active = null; |
| 79 | }, |
| 80 | |
| 81 | activate: function(drop) { |
| 82 | if(drop.hoverclass) |
| 83 | Element.addClassName(drop.element, drop.hoverclass); |
| 84 | this.last_active = drop; |
| 85 | }, |
| 86 | |
| 87 | show: function(point, element) { |
| 88 | if(!this.drops.length) return; |
| 89 | var drop, affected = []; |
| 90 | |
| 91 | this.drops.each( function(drop) { |
| 92 | if(Droppables.isAffected(point, element, drop)) |
| 93 | affected.push(drop); |
| 94 | }); |
| 95 | |
| 96 | if(affected.length>0) |
| 97 | drop = Droppables.findDeepestChild(affected); |
| 98 | |
| 99 | if(this.last_active && this.last_active != drop) this.deactivate(this.last_active); |
| 100 | if (drop) { |
| 101 | Position.within(drop.element, point[0], point[1]); |
| 102 | if(drop.onHover) |
| 103 | drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element)); |
| 104 | |
| 105 | if (drop != this.last_active) Droppables.activate(drop); |
| 106 | } |
| 107 | }, |
| 108 | |
| 109 | fire: function(event, element) { |
| 110 | if(!this.last_active) return; |
| 111 | Position.prepare(); |
| 112 | |
| 113 | if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active)) |
| 114 | if (this.last_active.onDrop) { |
| 115 | this.last_active.onDrop(element, this.last_active.element, event); |
| 116 | return true; |
| 117 | } |
| 118 | }, |
| 119 | |
| 120 | reset: function() { |
| 121 | if(this.last_active) |
| 122 | this.deactivate(this.last_active); |
| 123 | } |
| 124 | }; |
| 125 | |
| 126 | var Draggables = { |
| 127 | drags: [], |
| 128 | observers: [], |
| 129 | |
| 130 | register: function(draggable) { |
| 131 | if(this.drags.length == 0) { |
| 132 | this.eventMouseUp = this.endDrag.bindAsEventListener(this); |
| 133 | this.eventMouseMove = this.updateDrag.bindAsEventListener(this); |
| 134 | this.eventKeypress = this.keyPress.bindAsEventListener(this); |
| 135 | |
| 136 | Event.observe(document, "mouseup", this.eventMouseUp); |
| 137 | Event.observe(document, "mousemove", this.eventMouseMove); |
| 138 | Event.observe(document, "keypress", this.eventKeypress); |
| 139 | } |
| 140 | this.drags.push(draggable); |
| 141 | }, |
| 142 | |
| 143 | unregister: function(draggable) { |
| 144 | this.drags = this.drags.reject(function(d) { return d==draggable }); |
| 145 | if(this.drags.length == 0) { |
| 146 | Event.stopObserving(document, "mouseup", this.eventMouseUp); |
| 147 | Event.stopObserving(document, "mousemove", this.eventMouseMove); |
| 148 | Event.stopObserving(document, "keypress", this.eventKeypress); |
| 149 | } |
| 150 | }, |
| 151 | |
| 152 | activate: function(draggable) { |
| 153 | if(draggable.options.delay) { |
| 154 | this._timeout = setTimeout(function() { |
| 155 | Draggables._timeout = null; |
| 156 | window.focus(); |
| 157 | Draggables.activeDraggable = draggable; |
| 158 | }.bind(this), draggable.options.delay); |
| 159 | } else { |
| 160 | window.focus(); // allows keypress events if window isn't currently focused, fails for Safari |
| 161 | this.activeDraggable = draggable; |
| 162 | } |
| 163 | }, |
| 164 | |
| 165 | deactivate: function() { |
| 166 | this.activeDraggable = null; |
| 167 | }, |
| 168 | |
| 169 | updateDrag: function(event) { |
| 170 | if(!this.activeDraggable) return; |
| 171 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
| 172 | // Mozilla-based browsers fire successive mousemove events with |
| 173 | // the same coordinates, prevent needless redrawing (moz bug?) |
| 174 | if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return; |
| 175 | this._lastPointer = pointer; |
| 176 | |
| 177 | this.activeDraggable.updateDrag(event, pointer); |
| 178 | }, |
| 179 | |
| 180 | endDrag: function(event) { |
| 181 | if(this._timeout) { |
| 182 | clearTimeout(this._timeout); |
| 183 | this._timeout = null; |
| 184 | } |
| 185 | if(!this.activeDraggable) return; |
| 186 | this._lastPointer = null; |
| 187 | this.activeDraggable.endDrag(event); |
| 188 | this.activeDraggable = null; |
| 189 | }, |
| 190 | |
| 191 | keyPress: function(event) { |
| 192 | if(this.activeDraggable) |
| 193 | this.activeDraggable.keyPress(event); |
| 194 | }, |
| 195 | |
| 196 | addObserver: function(observer) { |
| 197 | this.observers.push(observer); |
| 198 | this._cacheObserverCallbacks(); |
| 199 | }, |
| 200 | |
| 201 | removeObserver: function(element) { // element instead of observer fixes mem leaks |
| 202 | this.observers = this.observers.reject( function(o) { return o.element==element }); |
| 203 | this._cacheObserverCallbacks(); |
| 204 | }, |
| 205 | |
| 206 | notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag' |
| 207 | if(this[eventName+'Count'] > 0) |
| 208 | this.observers.each( function(o) { |
| 209 | if(o[eventName]) o[eventName](eventName, draggable, event); |
| 210 | }); |
| 211 | if(draggable.options[eventName]) draggable.options[eventName](draggable, event); |
| 212 | }, |
| 213 | |
| 214 | _cacheObserverCallbacks: function() { |
| 215 | ['onStart','onEnd','onDrag'].each( function(eventName) { |
| 216 | Draggables[eventName+'Count'] = Draggables.observers.select( |
| 217 | function(o) { return o[eventName]; } |
| 218 | ).length; |
| 219 | }); |
| 220 | } |
| 221 | }; |
| 222 | |
| 223 | /*--------------------------------------------------------------------------*/ |
| 224 | |
| 225 | var Draggable = Class.create({ |
| 226 | initialize: function(element) { |
| 227 | var defaults = { |
| 228 | handle: false, |
| 229 | reverteffect: function(element, top_offset, left_offset) { |
| 230 | var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02; |
| 231 | new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur, |
| 232 | queue: {scope:'_draggable', position:'end'} |
| 233 | }); |
| 234 | }, |
| 235 | endeffect: function(element) { |
| 236 | var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0; |
| 237 | new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity, |
| 238 | queue: {scope:'_draggable', position:'end'}, |
| 239 | afterFinish: function(){ |
| 240 | Draggable._dragging[element] = false |
| 241 | } |
| 242 | }); |
| 243 | }, |
| 244 | zindex: 1000, |
| 245 | revert: false, |
| 246 | quiet: false, |
| 247 | scroll: false, |
| 248 | scrollSensitivity: 20, |
| 249 | scrollSpeed: 15, |
| 250 | snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] } |
| 251 | delay: 0 |
| 252 | }; |
| 253 | |
| 254 | if(!arguments[1] || Object.isUndefined(arguments[1].endeffect)) |
| 255 | Object.extend(defaults, { |
| 256 | starteffect: function(element) { |
| 257 | element._opacity = Element.getOpacity(element); |
| 258 | Draggable._dragging[element] = true; |
| 259 | new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7}); |
| 260 | } |
| 261 | }); |
| 262 | |
| 263 | var options = Object.extend(defaults, arguments[1] || { }); |
| 264 | |
| 265 | this.element = $(element); |
| 266 | |
| 267 | if(options.handle && Object.isString(options.handle)) |
| 268 | this.handle = this.element.down('.'+options.handle, 0); |
| 269 | |
| 270 | if(!this.handle) this.handle = $(options.handle); |
| 271 | if(!this.handle) this.handle = this.element; |
| 272 | |
| 273 | if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) { |
| 274 | options.scroll = $(options.scroll); |
| 275 | this._isScrollChild = Element.childOf(this.element, options.scroll); |
| 276 | } |
| 277 | |
| 278 | Element.makePositioned(this.element); // fix IE |
| 279 | |
| 280 | this.options = options; |
| 281 | this.dragging = false; |
| 282 | |
| 283 | this.eventMouseDown = this.initDrag.bindAsEventListener(this); |
| 284 | Event.observe(this.handle, "mousedown", this.eventMouseDown); |
| 285 | |
| 286 | Draggables.register(this); |
| 287 | }, |
| 288 | |
| 289 | destroy: function() { |
| 290 | Event.stopObserving(this.handle, "mousedown", this.eventMouseDown); |
| 291 | Draggables.unregister(this); |
| 292 | }, |
| 293 | |
| 294 | currentDelta: function() { |
| 295 | return([ |
| 296 | parseInt(Element.getStyle(this.element,'left') || '0'), |
| 297 | parseInt(Element.getStyle(this.element,'top') || '0')]); |
| 298 | }, |
| 299 | |
| 300 | initDrag: function(event) { |
| 301 | if(!Object.isUndefined(Draggable._dragging[this.element]) && |
| 302 | Draggable._dragging[this.element]) return; |
| 303 | if(Event.isLeftClick(event)) { |
| 304 | // abort on form elements, fixes a Firefox issue |
| 305 | var src = Event.element(event); |
| 306 | if((tag_name = src.tagName.toUpperCase()) && ( |
| 307 | tag_name=='INPUT' || |
| 308 | tag_name=='SELECT' || |
| 309 | tag_name=='OPTION' || |
| 310 | tag_name=='BUTTON' || |
| 311 | tag_name=='TEXTAREA')) return; |
| 312 | |
| 313 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
| 314 | var pos = Position.cumulativeOffset(this.element); |
| 315 | this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) }); |
| 316 | |
| 317 | Draggables.activate(this); |
| 318 | Event.stop(event); |
| 319 | } |
| 320 | }, |
| 321 | |
| 322 | startDrag: function(event) { |
| 323 | this.dragging = true; |
| 324 | if(!this.delta) |
| 325 | this.delta = this.currentDelta(); |
| 326 | |
| 327 | if(this.options.zindex) { |
| 328 | this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0); |
| 329 | this.element.style.zIndex = this.options.zindex; |
| 330 | } |
| 331 | |
| 332 | if(this.options.ghosting) { |
| 333 | this._clone = this.element.cloneNode(true); |
| 334 | this._originallyAbsolute = (this.element.getStyle('position') == 'absolute'); |
| 335 | if (!this._originallyAbsolute) |
| 336 | Position.absolutize(this.element); |
| 337 | this.element.parentNode.insertBefore(this._clone, this.element); |
| 338 | } |
| 339 | |
| 340 | if(this.options.scroll) { |
| 341 | if (this.options.scroll == window) { |
| 342 | var where = this._getWindowScroll(this.options.scroll); |
| 343 | this.originalScrollLeft = where.left; |
| 344 | this.originalScrollTop = where.top; |
| 345 | } else { |
| 346 | this.originalScrollLeft = this.options.scroll.scrollLeft; |
| 347 | this.originalScrollTop = this.options.scroll.scrollTop; |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | Draggables.notify('onStart', this, event); |
| 352 | |
| 353 | if(this.options.starteffect) this.options.starteffect(this.element); |
| 354 | }, |
| 355 | |
| 356 | updateDrag: function(event, pointer) { |
| 357 | if(!this.dragging) this.startDrag(event); |
| 358 | |
| 359 | if(!this.options.quiet){ |
| 360 | Position.prepare(); |
| 361 | Droppables.show(pointer, this.element); |
| 362 | } |
| 363 | |
| 364 | Draggables.notify('onDrag', this, event); |
| 365 | |
| 366 | this.draw(pointer); |
| 367 | if(this.options.change) this.options.change(this); |
| 368 | |
| 369 | if(this.options.scroll) { |
| 370 | this.stopScrolling(); |
| 371 | |
| 372 | var p; |
| 373 | if (this.options.scroll == window) { |
| 374 | with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; } |
| 375 | } else { |
| 376 | p = Position.page(this.options.scroll); |
| 377 | p[0] += this.options.scroll.scrollLeft + Position.deltaX; |
| 378 | p[1] += this.options.scroll.scrollTop + Position.deltaY; |
| 379 | p.push(p[0]+this.options.scroll.offsetWidth); |
| 380 | p.push(p[1]+this.options.scroll.offsetHeight); |
| 381 | } |
| 382 | var speed = [0,0]; |
| 383 | if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity); |
| 384 | if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity); |
| 385 | if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity); |
| 386 | if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity); |
| 387 | this.startScrolling(speed); |
| 388 | } |
| 389 | |
| 390 | // fix AppleWebKit rendering |
| 391 | if(Prototype.Browser.WebKit) window.scrollBy(0,0); |
| 392 | |
| 393 | Event.stop(event); |
| 394 | }, |
| 395 | |
| 396 | finishDrag: function(event, success) { |
| 397 | this.dragging = false; |
| 398 | |
| 399 | if(this.options.quiet){ |
| 400 | Position.prepare(); |
| 401 | var pointer = [Event.pointerX(event), Event.pointerY(event)]; |
| 402 | Droppables.show(pointer, this.element); |
| 403 | } |
| 404 | |
| 405 | if(this.options.ghosting) { |
| 406 | if (!this._originallyAbsolute) |
| 407 | Position.relativize(this.element); |
| 408 | delete this._originallyAbsolute; |
| 409 | Element.remove(this._clone); |
| 410 | this._clone = null; |
| 411 | } |
| 412 | |
| 413 | var dropped = false; |
| 414 | if(success) { |
| 415 | dropped = Droppables.fire(event, this.element); |
| 416 | if (!dropped) dropped = false; |
| 417 | } |
| 418 | if(dropped && this.options.onDropped) this.options.onDropped(this.element); |
| 419 | Draggables.notify('onEnd', this, event); |
| 420 | |
| 421 | var revert = this.options.revert; |
| 422 | if(revert && Object.isFunction(revert)) revert = revert(this.element); |
| 423 | |
| 424 | var d = this.currentDelta(); |
| 425 | if(revert && this.options.reverteffect) { |
| 426 | if (dropped == 0 || revert != 'failure') |
| 427 | this.options.reverteffect(this.element, |
| 428 | d[1]-this.delta[1], d[0]-this.delta[0]); |
| 429 | } else { |
| 430 | this.delta = d; |
| 431 | } |
| 432 | |
| 433 | if(this.options.zindex) |
| 434 | this.element.style.zIndex = this.originalZ; |
| 435 | |
| 436 | if(this.options.endeffect) |
| 437 | this.options.endeffect(this.element); |
| 438 | |
| 439 | Draggables.deactivate(this); |
| 440 | Droppables.reset(); |
| 441 | }, |
| 442 | |
| 443 | keyPress: function(event) { |
| 444 | if(event.keyCode!=Event.KEY_ESC) return; |
| 445 | this.finishDrag(event, false); |
| 446 | Event.stop(event); |
| 447 | }, |
| 448 | |
| 449 | endDrag: function(event) { |
| 450 | if(!this.dragging) return; |
| 451 | this.stopScrolling(); |
| 452 | this.finishDrag(event, true); |
| 453 | Event.stop(event); |
| 454 | }, |
| 455 | |
| 456 | draw: function(point) { |
| 457 | var pos = Position.cumulativeOffset(this.element); |
| 458 | if(this.options.ghosting) { |
| 459 | var r = Position.realOffset(this.element); |
| 460 | pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY; |
| 461 | } |
| 462 | |
| 463 | var d = this.currentDelta(); |
| 464 | pos[0] -= d[0]; pos[1] -= d[1]; |
| 465 | |
| 466 | if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) { |
| 467 | pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft; |
| 468 | pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop; |
| 469 | } |
| 470 | |
| 471 | var p = [0,1].map(function(i){ |
| 472 | return (point[i]-pos[i]-this.offset[i]) |
| 473 | }.bind(this)); |
| 474 | |
| 475 | if(this.options.snap) { |
| 476 | if(Object.isFunction(this.options.snap)) { |
| 477 | p = this.options.snap(p[0],p[1],this); |
| 478 | } else { |
| 479 | if(Object.isArray(this.options.snap)) { |
| 480 | p = p.map( function(v, i) { |
| 481 | return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this)); |
| 482 | } else { |
| 483 | p = p.map( function(v) { |
| 484 | return (v/this.options.snap).round()*this.options.snap }.bind(this)); |
| 485 | } |
| 486 | }} |
| 487 | |
| 488 | var style = this.element.style; |
| 489 | if((!this.options.constraint) || (this.options.constraint=='horizontal')) |
| 490 | style.left = p[0] + "px"; |
| 491 | if((!this.options.constraint) || (this.options.constraint=='vertical')) |
| 492 | style.top = p[1] + "px"; |
| 493 | |
| 494 | if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering |
| 495 | }, |
| 496 | |
| 497 | stopScrolling: function() { |
| 498 | if(this.scrollInterval) { |
| 499 | clearInterval(this.scrollInterval); |
| 500 | this.scrollInterval = null; |
| 501 | Draggables._lastScrollPointer = null; |
| 502 | } |
| 503 | }, |
| 504 | |
| 505 | startScrolling: function(speed) { |
| 506 | if(!(speed[0] || speed[1])) return; |
| 507 | this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed]; |
| 508 | this.lastScrolled = new Date(); |
| 509 | this.scrollInterval = setInterval(this.scroll.bind(this), 10); |
| 510 | }, |
| 511 | |
| 512 | scroll: function() { |
| 513 | var current = new Date(); |
| 514 | var delta = current - this.lastScrolled; |
| 515 | this.lastScrolled = current; |
| 516 | if(this.options.scroll == window) { |
| 517 | with (this._getWindowScroll(this.options.scroll)) { |
| 518 | if (this.scrollSpeed[0] || this.scrollSpeed[1]) { |
| 519 | var d = delta / 1000; |
| 520 | this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] ); |
| 521 | } |
| 522 | } |
| 523 | } else { |
| 524 | this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000; |
| 525 | this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000; |
| 526 | } |
| 527 | |
| 528 | Position.prepare(); |
| 529 | Droppables.show(Draggables._lastPointer, this.element); |
| 530 | Draggables.notify('onDrag', this); |
| 531 | if (this._isScrollChild) { |
| 532 | Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer); |
| 533 | Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000; |
| 534 | Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000; |
| 535 | if (Draggables._lastScrollPointer[0] < 0) |
| 536 | Draggables._lastScrollPointer[0] = 0; |
| 537 | if (Draggables._lastScrollPointer[1] < 0) |
| 538 | Draggables._lastScrollPointer[1] = 0; |
| 539 | this.draw(Draggables._lastScrollPointer); |
| 540 | } |
| 541 | |
| 542 | if(this.options.change) this.options.change(this); |
| 543 | }, |
| 544 | |
| 545 | _getWindowScroll: function(w) { |
| 546 | var T, L, W, H; |
| 547 | with (w.document) { |
| 548 | if (w.document.documentElement && documentElement.scrollTop) { |
| 549 | T = documentElement.scrollTop; |
| 550 | L = documentElement.scrollLeft; |
| 551 | } else if (w.document.body) { |
| 552 | T = body.scrollTop; |
| 553 | L = body.scrollLeft; |
| 554 | } |
| 555 | if (w.innerWidth) { |
| 556 | W = w.innerWidth; |
| 557 | H = w.innerHeight; |
| 558 | } else if (w.document.documentElement && documentElement.clientWidth) { |
| 559 | W = documentElement.clientWidth; |
| 560 | H = documentElement.clientHeight; |
| 561 | } else { |
| 562 | W = body.offsetWidth; |
| 563 | H = body.offsetHeight; |
| 564 | } |
| 565 | } |
| 566 | return { top: T, left: L, width: W, height: H }; |
| 567 | } |
| 568 | }); |
| 569 | |
| 570 | Draggable._dragging = { }; |
| 571 | |
| 572 | /*--------------------------------------------------------------------------*/ |
| 573 | |
| 574 | var SortableObserver = Class.create({ |
| 575 | initialize: function(element, observer) { |
| 576 | this.element = $(element); |
| 577 | this.observer = observer; |
| 578 | this.lastValue = Sortable.serialize(this.element); |
| 579 | }, |
| 580 | |
| 581 | onStart: function() { |
| 582 | this.lastValue = Sortable.serialize(this.element); |
| 583 | }, |
| 584 | |
| 585 | onEnd: function() { |
| 586 | Sortable.unmark(); |
| 587 | if(this.lastValue != Sortable.serialize(this.element)) |
| 588 | this.observer(this.element) |
| 589 | } |
| 590 | }); |
| 591 | |
| 592 | var Sortable = { |
| 593 | SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/, |
| 594 | |
| 595 | sortables: { }, |
| 596 | |
| 597 | _findRootElement: function(element) { |
| 598 | while (element.tagName.toUpperCase() != "BODY") { |
| 599 | if(element.id && Sortable.sortables[element.id]) return element; |
| 600 | element = element.parentNode; |
| 601 | } |
| 602 | }, |
| 603 | |
| 604 | options: function(element) { |
| 605 | element = Sortable._findRootElement($(element)); |
| 606 | if(!element) return; |
| 607 | return Sortable.sortables[element.id]; |
| 608 | }, |
| 609 | |
| 610 | destroy: function(element){ |
| 611 | element = $(element); |
| 612 | var s = Sortable.sortables[element.id]; |
| 613 | |
| 614 | if(s) { |
| 615 | Draggables.removeObserver(s.element); |
| 616 | s.droppables.each(function(d){ Droppables.remove(d) }); |
| 617 | s.draggables.invoke('destroy'); |
| 618 | |
| 619 | delete Sortable.sortables[s.element.id]; |
| 620 | } |
| 621 | }, |
| 622 | |
| 623 | create: function(element) { |
| 624 | element = $(element); |
| 625 | var options = Object.extend({ |
| 626 | element: element, |
| 627 | tag: 'li', // assumes li children, override with tag: 'tagname' |
| 628 | dropOnEmpty: false, |
| 629 | tree: false, |
| 630 | treeTag: 'ul', |
| 631 | overlap: 'vertical', // one of 'vertical', 'horizontal' |
| 632 | constraint: 'vertical', // one of 'vertical', 'horizontal', false |
| 633 | containment: element, // also takes array of elements (or id's); or false |
| 634 | handle: false, // or a CSS class |
| 635 | only: false, |
| 636 | delay: 0, |
| 637 | hoverclass: null, |
| 638 | ghosting: false, |
| 639 | quiet: false, |
| 640 | scroll: false, |
| 641 | scrollSensitivity: 20, |
| 642 | scrollSpeed: 15, |
| 643 | format: this.SERIALIZE_RULE, |
| 644 | |
| 645 | // these take arrays of elements or ids and can be |
| 646 | // used for better initialization performance |
| 647 | elements: false, |
| 648 | handles: false, |
| 649 | |
| 650 | onChange: Prototype.emptyFunction, |
| 651 | onUpdate: Prototype.emptyFunction |
| 652 | }, arguments[1] || { }); |
| 653 | |
| 654 | // clear any old sortable with same element |
| 655 | this.destroy(element); |
| 656 | |
| 657 | // build options for the draggables |
| 658 | var options_for_draggable = { |
| 659 | revert: true, |
| 660 | quiet: options.quiet, |
| 661 | scroll: options.scroll, |
| 662 | scrollSpeed: options.scrollSpeed, |
| 663 | scrollSensitivity: options.scrollSensitivity, |
| 664 | delay: options.delay, |
| 665 | ghosting: options.ghosting, |
| 666 | constraint: options.constraint, |
| 667 | handle: options.handle }; |
| 668 | |
| 669 | if(options.starteffect) |
| 670 | options_for_draggable.starteffect = options.starteffect; |
| 671 | |
| 672 | if(options.reverteffect) |
| 673 | options_for_draggable.reverteffect = options.reverteffect; |
| 674 | else |
| 675 | if(options.ghosting) options_for_draggable.reverteffect = function(element) { |
| 676 | element.style.top = 0; |
| 677 | element.style.left = 0; |
| 678 | }; |
| 679 | |
| 680 | if(options.endeffect) |
| 681 | options_for_draggable.endeffect = options.endeffect; |
| 682 | |
| 683 | if(options.zindex) |
| 684 | options_for_draggable.zindex = options.zindex; |
| 685 | |
| 686 | // build options for the droppables |
| 687 | var options_for_droppable = { |
| 688 | overlap: options.overlap, |
| 689 | containment: options.containment, |
| 690 | tree: options.tree, |
| 691 | hoverclass: options.hoverclass, |
| 692 | onHover: Sortable.onHover |
| 693 | }; |
| 694 | |
| 695 | var options_for_tree = { |
| 696 | onHover: Sortable.onEmptyHover, |
| 697 | overlap: options.overlap, |
| 698 | containment: options.containment, |
| 699 | hoverclass: options.hoverclass |
| 700 | }; |
| 701 | |
| 702 | // fix for gecko engine |
| 703 | Element.cleanWhitespace(element); |
| 704 | |
| 705 | options.draggables = []; |
| 706 | options.droppables = []; |
| 707 | |
| 708 | // drop on empty handling |
| 709 | if(options.dropOnEmpty || options.tree) { |
| 710 | Droppables.add(element, options_for_tree); |
| 711 | options.droppables.push(element); |
| 712 | } |
| 713 | |
| 714 | (options.elements || this.findElements(element, options) || []).each( function(e,i) { |
| 715 | var handle = options.handles ? $(options.handles[i]) : |
| 716 | (options.handle ? $(e).select('.' + options.handle)[0] : e); |
| 717 | options.draggables.push( |
| 718 | new Draggable(e, Object.extend(options_for_draggable, { handle: handle }))); |
| 719 | Droppables.add(e, options_for_droppable); |
| 720 | if(options.tree) e.treeNode = element; |
| 721 | options.droppables.push(e); |
| 722 | }); |
| 723 | |
| 724 | if(options.tree) { |
| 725 | (Sortable.findTreeElements(element, options) || []).each( function(e) { |
| 726 | Droppables.add(e, options_for_tree); |
| 727 | e.treeNode = element; |
| 728 | options.droppables.push(e); |
| 729 | }); |
| 730 | } |
| 731 | |
| 732 | // keep reference |
| 733 | this.sortables[element.id] = options; |
| 734 | |
| 735 | // for onupdate |
| 736 | Draggables.addObserver(new SortableObserver(element, options.onUpdate)); |
| 737 | |
| 738 | }, |
| 739 | |
| 740 | // return all suitable-for-sortable elements in a guaranteed order |
| 741 | findElements: function(element, options) { |
| 742 | return Element.findChildren( |
| 743 | element, options.only, options.tree ? true : false, options.tag); |
| 744 | }, |
| 745 | |
| 746 | findTreeElements: function(element, options) { |
| 747 | return Element.findChildren( |
| 748 | element, options.only, options.tree ? true : false, options.treeTag); |
| 749 | }, |
| 750 | |
| 751 | onHover: function(element, dropon, overlap) { |
| 752 | if(Element.isParent(dropon, element)) return; |
| 753 | |
| 754 | if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) { |
| 755 | return; |
| 756 | } else if(overlap>0.5) { |
| 757 | Sortable.mark(dropon, 'before'); |
| 758 | if(dropon.previousSibling != element) { |
| 759 | var oldParentNode = element.parentNode; |
| 760 | element.style.visibility = "hidden"; // fix gecko rendering |
| 761 | dropon.parentNode.insertBefore(element, dropon); |
| 762 | if(dropon.parentNode!=oldParentNode) |
| 763 | Sortable.options(oldParentNode).onChange(element); |
| 764 | Sortable.options(dropon.parentNode).onChange(element); |
| 765 | } |
| 766 | } else { |
| 767 | Sortable.mark(dropon, 'after'); |
| 768 | var nextElement = dropon.nextSibling || null; |
| 769 | if(nextElement != element) { |
| 770 | var oldParentNode = element.parentNode; |
| 771 | element.style.visibility = "hidden"; // fix gecko rendering |
| 772 | dropon.parentNode.insertBefore(element, nextElement); |
| 773 | if(dropon.parentNode!=oldParentNode) |
| 774 | Sortable.options(oldParentNode).onChange(element); |
| 775 | Sortable.options(dropon.parentNode).onChange(element); |
| 776 | } |
| 777 | } |
| 778 | }, |
| 779 | |
| 780 | onEmptyHover: function(element, dropon, overlap) { |
| 781 | var oldParentNode = element.parentNode; |
| 782 | var droponOptions = Sortable.options(dropon); |
| 783 | |
| 784 | if(!Element.isParent(dropon, element)) { |
| 785 | var index; |
| 786 | |
| 787 | var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only}); |
| 788 | var child = null; |
| 789 | |
| 790 | if(children) { |
| 791 | var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap); |
| 792 | |
| 793 | for (index = 0; index < children.length; index += 1) { |
| 794 | if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) { |
| 795 | offset -= Element.offsetSize (children[index], droponOptions.overlap); |
| 796 | } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) { |
| 797 | child = index + 1 < children.length ? children[index + 1] : null; |
| 798 | break; |
| 799 | } else { |
| 800 | child = children[index]; |
| 801 | break; |
| 802 | } |
| 803 | } |
| 804 | } |
| 805 | |
| 806 | dropon.insertBefore(element, child); |
| 807 | |
| 808 | Sortable.options(oldParentNode).onChange(element); |
| 809 | droponOptions.onChange(element); |
| 810 | } |
| 811 | }, |
| 812 | |
| 813 | unmark: function() { |
| 814 | if(Sortable._marker) Sortable._marker.hide(); |
| 815 | }, |
| 816 | |
| 817 | mark: function(dropon, position) { |
| 818 | // mark on ghosting only |
| 819 | var sortable = Sortable.options(dropon.parentNode); |
| 820 | if(sortable && !sortable.ghosting) return; |
| 821 | |
| 822 | if(!Sortable._marker) { |
| 823 | Sortable._marker = |
| 824 | ($('dropmarker') || Element.extend(document.createElement('DIV'))). |
| 825 | hide().addClassName('dropmarker').setStyle({position:'absolute'}); |
| 826 | document.getElementsByTagName("body").item(0).appendChild(Sortable._marker); |
| 827 | } |
| 828 | var offsets = Position.cumulativeOffset(dropon); |
| 829 | Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'}); |
| 830 | |
| 831 | if(position=='after') |
| 832 | if(sortable.overlap == 'horizontal') |
| 833 | Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'}); |
| 834 | else |
| 835 | Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'}); |
| 836 | |
| 837 | Sortable._marker.show(); |
| 838 | }, |
| 839 | |
| 840 | _tree: function(element, options, parent) { |
| 841 | var children = Sortable.findElements(element, options) || []; |
| 842 | |
| 843 | for (var i = 0; i < children.length; ++i) { |
| 844 | var match = children[i].id.match(options.format); |
| 845 | |
| 846 | if (!match) continue; |
| 847 | |
| 848 | var child = { |
| 849 | id: encodeURIComponent(match ? match[1] : null), |
| 850 | element: element, |
| 851 | parent: parent, |
| 852 | children: [], |
| 853 | position: parent.children.length, |
| 854 | container: $(children[i]).down(options.treeTag) |
| 855 | }; |
| 856 | |
| 857 | /* Get the element containing the children and recurse over it */ |
| 858 | if (child.container) |
| 859 | this._tree(child.container, options, child); |
| 860 | |
| 861 | parent.children.push (child); |
| 862 | } |
| 863 | |
| 864 | return parent; |
| 865 | }, |
| 866 | |
| 867 | tree: function(element) { |
| 868 | element = $(element); |
| 869 | var sortableOptions = this.options(element); |
| 870 | var options = Object.extend({ |
| 871 | tag: sortableOptions.tag, |
| 872 | treeTag: sortableOptions.treeTag, |
| 873 | only: sortableOptions.only, |
| 874 | name: element.id, |
| 875 | format: sortableOptions.format |
| 876 | }, arguments[1] || { }); |
| 877 | |
| 878 | var root = { |
| 879 | id: null, |
| 880 | parent: null, |
| 881 | children: [], |
| 882 | container: element, |
| 883 | position: 0 |
| 884 | }; |
| 885 | |
| 886 | return Sortable._tree(element, options, root); |
| 887 | }, |
| 888 | |
| 889 | /* Construct a [i] index for a particular node */ |
| 890 | _constructIndex: function(node) { |
| 891 | var index = ''; |
| 892 | do { |
| 893 | if (node.id) index = '[' + node.position + ']' + index; |
| 894 | } while ((node = node.parent) != null); |
| 895 | return index; |
| 896 | }, |
| 897 | |
| 898 | sequence: function(element) { |
| 899 | element = $(element); |
| 900 | var options = Object.extend(this.options(element), arguments[1] || { }); |
| 901 | |
| 902 | return $(this.findElements(element, options) || []).map( function(item) { |
| 903 | return item.id.match(options.format) ? item.id.match(options.format)[1] : ''; |
| 904 | }); |
| 905 | }, |
| 906 | |
| 907 | setSequence: function(element, new_sequence) { |
| 908 | element = $(element); |
| 909 | var options = Object.extend(this.options(element), arguments[2] || { }); |
| 910 | |
| 911 | var nodeMap = { }; |
| 912 | this.findElements(element, options).each( function(n) { |
| 913 | if (n.id.match(options.format)) |
| 914 | nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode]; |
| 915 | n.parentNode.removeChild(n); |
| 916 | }); |
| 917 | |
| 918 | new_sequence.each(function(ident) { |
| 919 | var n = nodeMap[ident]; |
| 920 | if (n) { |
| 921 | n[1].appendChild(n[0]); |
| 922 | delete nodeMap[ident]; |
| 923 | } |
| 924 | }); |
| 925 | }, |
| 926 | |
| 927 | serialize: function(element) { |
| 928 | element = $(element); |
| 929 | var options = Object.extend(Sortable.options(element), arguments[1] || { }); |
| 930 | var name = encodeURIComponent( |
| 931 | (arguments[1] && arguments[1].name) ? arguments[1].name : element.id); |
| 932 | |
| 933 | if (options.tree) { |
| 934 | return Sortable.tree(element, arguments[1]).children.map( function (item) { |
| 935 | return [name + Sortable._constructIndex(item) + "[id]=" + |
| 936 | encodeURIComponent(item.id)].concat(item.children.map(arguments.callee)); |
| 937 | }).flatten().join('&'); |
| 938 | } else { |
| 939 | return Sortable.sequence(element, arguments[1]).map( function(item) { |
| 940 | return name + "[]=" + encodeURIComponent(item); |
| 941 | }).join('&'); |
| 942 | } |
| 943 | } |
| 944 | }; |
| 945 | |
| 946 | // Returns true if child is contained within element |
| 947 | Element.isParent = function(child, element) { |
| 948 | if (!child.parentNode || child == element) return false; |
| 949 | if (child.parentNode == element) return true; |
| 950 | return Element.isParent(child.parentNode, element); |
| 951 | }; |
| 952 | |
| 953 | Element.findChildren = function(element, only, recursive, tagName) { |
| 954 | if(!element.hasChildNodes()) return null; |
| 955 | tagName = tagName.toUpperCase(); |
| 956 | if(only) only = [only].flatten(); |
| 957 | var elements = []; |
| 958 | $A(element.childNodes).each( function(e) { |
| 959 | if(e.tagName && e.tagName.toUpperCase()==tagName && |
| 960 | (!only || (Element.classNames(e).detect(function(v) { return only.include(v) })))) |
| 961 | elements.push(e); |
| 962 | if(recursive) { |
| 963 | var grandchildren = Element.findChildren(e, only, recursive, tagName); |
| 964 | if(grandchildren) elements.push(grandchildren); |
| 965 | } |
| 966 | }); |
| 967 | |
| 968 | return (elements.length>0 ? elements.flatten() : []); |
| 969 | }; |
| 970 | |
| 971 | Element.offsetSize = function (element, type) { |
| 972 | return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')]; |
| 973 | }; |
