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1 /* 2 * jQuery UI Sortable 1.6 3 * 4 * Copyright (c) 2008 AUTHORS.txt (http://ui.jquery.com/about) 5 * Dual licensed under the MIT (MIT-LICENSE.txt) 6 * and GPL (GPL-LICENSE.txt) licenses. 7 * 8 * http://docs.jquery.com/UI/Sortables 9 * 10 * Depends: 11 * ui.core.js 12 */ 13 (function($) { 14 15 $.widget("ui.sortable", $.extend({}, $.ui.mouse, { 16 _init: function() { 17 18 var o = this.options; 19 this.containerCache = {}; 20 this.element.addClass("ui-sortable"); 21 22 //Get the items 23 this.refresh(); 24 25 //Let's determine if the items are floating 26 this.floating = this.items.length ? (/left|right/).test(this.items[0].item.css('float')) : false; 27 28 //Let's determine the parent's offset 29 this.offset = this.element.offset(); 30 31 //Initialize mouse events for interaction 32 this._mouseInit(); 33 34 }, 35 36 destroy: function() { 37 this.element 38 .removeClass("ui-sortable ui-sortable-disabled") 39 .removeData("sortable") 40 .unbind(".sortable"); 41 this._mouseDestroy(); 42 43 for ( var i = this.items.length - 1; i >= 0; i-- ) 44 this.items[i].item.removeData("sortable-item"); 45 }, 46 47 _mouseCapture: function(event, overrideHandle) { 48 49 if (this.reverting) { 50 return false; 51 } 52 53 if(this.options.disabled || this.options.type == 'static') return false; 54 55 //We have to refresh the items data once first 56 this._refreshItems(event); 57 58 //Find out if the clicked node (or one of its parents) is a actual item in this.items 59 var currentItem = null, self = this, nodes = $(event.target).parents().each(function() { 60 if($.data(this, 'sortable-item') == self) { 61 currentItem = $(this); 62 return false; 63 } 64 }); 65 if($.data(event.target, 'sortable-item') == self) currentItem = $(event.target); 66 67 if(!currentItem) return false; 68 if(this.options.handle && !overrideHandle) { 69 var validHandle = false; 70 71 $(this.options.handle, currentItem).find("*").andSelf().each(function() { if(this == event.target) validHandle = true; }); 72 if(!validHandle) return false; 73 } 74 75 this.currentItem = currentItem; 76 this._removeCurrentsFromItems(); 77 return true; 78 79 }, 80 81 _mouseStart: function(event, overrideHandle, noActivation) { 82 83 var o = this.options; 84 this.currentContainer = this; 85 86 //We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture 87 this.refreshPositions(); 88 89 //Create and append the visible helper 90 this.helper = this._createHelper(event); 91 92 //Cache the helper size 93 this._cacheHelperProportions(); 94 95 /* 96 * - Position generation - 97 * This block generates everything position related - it's the core of draggables. 98 */ 99 100 //Cache the margins of the original element 101 this._cacheMargins(); 102 103 //Get the next scrolling parent 104 this.scrollParent = this.helper.scrollParent(); 105 106 //The element's absolute position on the page minus margins 107 this.offset = this.currentItem.offset(); 108 109 this.offset = { 110 top: this.offset.top - this.margins.top, 111 left: this.offset.left - this.margins.left 112 }; 113 114 // Only after we got the offset, we can change the helper's position to absolute 115 // TODO: Still need to figure out a way to make relative sorting possible 116 this.helper.css("position", "absolute"); 117 this.cssPosition = this.helper.css("position"); 118 119 $.extend(this.offset, { 120 click: { //Where the click happened, relative to the element 121 left: event.pageX - this.offset.left, 122 top: event.pageY - this.offset.top 123 }, 124 parent: this._getParentOffset(), 125 relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper 126 }); 127 128 //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied 129 if(o.cursorAt) 130 this._adjustOffsetFromHelper(o.cursorAt); 131 132 //Generate the original position 133 this.originalPosition = this._generatePosition(event); 134 135 //Cache the former DOM position 136 this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] }; 137 138 //If the helper is not the original, hide the original so it's not playing any role during the drag, won't cause anything bad this way 139 if(this.helper[0] != this.currentItem[0]) { 140 this.currentItem.hide(); 141 } 142 143 //Create the placeholder 144 this._createPlaceholder(); 145 146 //Set a containment if given in the options 147 if(o.containment) 148 this._setContainment(); 149 150 //Call plugins and callbacks 151 this._propagate("start", event); 152 153 //Recache the helper size 154 if(!this._preserveHelperProportions) 155 this._cacheHelperProportions(); 156 157 158 //Post 'activate' events to possible containers 159 if(!noActivation) { 160 for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i]._propagate("activate", event, this); } 161 } 162 163 //Prepare possible droppables 164 if($.ui.ddmanager) 165 $.ui.ddmanager.current = this; 166 167 if ($.ui.ddmanager && !o.dropBehaviour) 168 $.ui.ddmanager.prepareOffsets(this, event); 169 170 this.dragging = true; 171 172 this.helper.addClass('ui-sortable-helper'); 173 this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position 174 return true; 175 176 }, 177 178 _mouseDrag: function(event) { 179 180 //Compute the helpers position 181 this.position = this._generatePosition(event); 182 this.positionAbs = this._convertPositionTo("absolute"); 183 184 if (!this.lastPositionAbs) { 185 this.lastPositionAbs = this.positionAbs; 186 } 187 188 //Call the internal plugins 189 $.ui.plugin.call(this, "sort", [event, this._ui()]); 190 191 //Regenerate the absolute position used for position checks 192 this.positionAbs = this._convertPositionTo("absolute"); 193 194 //Set the helper position 195 if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px'; 196 if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px'; 197 198 //Rearrange 199 for (var i = this.items.length - 1; i >= 0; i--) { 200 201 //Cache variables and intersection, continue if no intersection 202 var item = this.items[i], itemElement = item.item[0], intersection = this._intersectsWithPointer(item); 203 if (!intersection) continue; 204 205 if(itemElement != this.currentItem[0] //cannot intersect with itself 206 && this.placeholder[intersection == 1 ? "next" : "prev"]()[0] != itemElement //no useless actions that have been done before 207 && !$.ui.contains(this.placeholder[0], itemElement) //no action if the item moved is the parent of the item checked 208 && (this.options.type == 'semi-dynamic' ? !$.ui.contains(this.element[0], itemElement) : true) 209 ) { 210 211 this.direction = intersection == 1 ? "down" : "up"; 212 213 if (this.options.tolerance == "pointer" || this._intersectsWithSides(item)) { 214 this.options.sortIndicator.call(this, event, item); 215 } else { 216 break; 217 } 218 219 this._propagate("change", event); //Call plugins and callbacks 220 break; 221 } 222 } 223 224 //Post events to containers 225 this._contactContainers(event); 226 227 //Interconnect with droppables 228 if($.ui.ddmanager) $.ui.ddmanager.drag(this, event); 229 230 //Call callbacks 231 this._trigger('sort', event, this._ui()); 232 233 this.lastPositionAbs = this.positionAbs; 234 return false; 235 236 }, 237 238 _mouseStop: function(event, noPropagation) { 239 240 if(!event) return; 241 242 //If we are using droppables, inform the manager about the drop 243 if ($.ui.ddmanager && !this.options.dropBehaviour) 244 $.ui.ddmanager.drop(this, event); 245 246 if(this.options.revert) { 247 var self = this; 248 var cur = self.placeholder.offset(); 249 250 self.reverting = true; 251 252 $(this.helper).animate({ 253 left: cur.left - this.offset.parent.left - self.margins.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft), 254 top: cur.top - this.offset.parent.top - self.margins.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop) 255 }, parseInt(this.options.revert, 10) || 500, function() { 256 self._clear(event); 257 }); 258 } else { 259 this._clear(event, noPropagation); 260 } 261 262 return false; 263 264 }, 265 266 cancel: function() { 267 268 if(this.dragging) { 269 270 this._mouseUp(); 271 272 if(this.options.helper == "original") 273 this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper"); 274 else 275 this.currentItem.show(); 276 277 //Post deactivating events to containers 278 for (var i = this.containers.length - 1; i >= 0; i--){ 279 this.containers[i]._propagate("deactivate", null, this); 280 if(this.containers[i].containerCache.over) { 281 this.containers[i]._propagate("out", null, this); 282 this.containers[i].containerCache.over = 0; 283 } 284 } 285 286 } 287 288 //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node! 289 if(this.placeholder[0].parentNode) this.placeholder[0].parentNode.removeChild(this.placeholder[0]); 290 if(this.options.helper != "original" && this.helper && this.helper[0].parentNode) this.helper.remove(); 291 292 $.extend(this, { 293 helper: null, 294 dragging: false, 295 reverting: false, 296 _noFinalSort: null 297 }); 298 299 if(this.domPosition.prev) { 300 $(this.domPosition.prev).after(this.currentItem); 301 } else { 302 $(this.domPosition.parent).prepend(this.currentItem); 303 } 304 305 return true; 306 307 }, 308 309 serialize: function(o) { 310 311 var items = this._getItemsAsjQuery(o && o.connected); 312 var str = []; o = o || {}; 313 314 $(items).each(function() { 315 var res = ($(o.item || this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/)); 316 if(res) str.push((o.key || res[1]+'[]')+'='+(o.key && o.expression ? res[1] : res[2])); 317 }); 318 319 return str.join('&'); 320 321 }, 322 323 toArray: function(o) { 324 325 var items = this._getItemsAsjQuery(o && o.connected); 326 var ret = []; o = o || {}; 327 328 items.each(function() { ret.push($(o.item || this).attr(o.attribute || 'id') || ''); }); 329 return ret; 330 331 }, 332 333 /* Be careful with the following core functions */ 334 _intersectsWith: function(item) { 335 336 var x1 = this.positionAbs.left, 337 x2 = x1 + this.helperProportions.width, 338 y1 = this.positionAbs.top, 339 y2 = y1 + this.helperProportions.height; 340 341 var l = item.left, 342 r = l + item.width, 343 t = item.top, 344 b = t + item.height; 345 346 var dyClick = this.offset.click.top, 347 dxClick = this.offset.click.left; 348 349 var isOverElement = (y1 + dyClick) > t && (y1 + dyClick) < b && (x1 + dxClick) > l && (x1 + dxClick) < r; 350 351 if( this.options.tolerance == "pointer" 352 || this.options.forcePointerForContainers 353 || (this.options.tolerance != "pointer" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height']) 354 ) { 355 return isOverElement; 356 } else { 357 358 return (l < x1 + (this.helperProportions.width / 2) // Right Half 359 && x2 - (this.helperProportions.width / 2) < r // Left Half 360 && t < y1 + (this.helperProportions.height / 2) // Bottom Half 361 && y2 - (this.helperProportions.height / 2) < b ); // Top Half 362 363 } 364 }, 365 366 _intersectsWithPointer: function(item) { 367 368 var isOverElementHeight = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height), 369 isOverElementWidth = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width), 370 isOverElement = isOverElementHeight && isOverElementWidth, 371 verticalDirection = this._getDragVerticalDirection(), 372 horizontalDirection = this._getDragHorizontalDirection(); 373 374 if (!isOverElement) 375 return false; 376 377 return this.floating ? 378 ( ((horizontalDirection && horizontalDirection == "right") || verticalDirection == "down") ? 2 : 1 ) 379 : ( verticalDirection && (verticalDirection == "down" ? 2 : 1) ); 380 381 }, 382 383 _intersectsWithSides: function(item) { 384 385 var isOverBottomHalf = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height), 386 isOverRightHalf = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width), 387 verticalDirection = this._getDragVerticalDirection(), 388 horizontalDirection = this._getDragHorizontalDirection(); 389 390 if (this.floating && horizontalDirection) { 391 return ((horizontalDirection == "right" && isOverRightHalf) || (horizontalDirection == "left" && !isOverRightHalf)); 392 } else { 393 return verticalDirection && ((verticalDirection == "down" && isOverBottomHalf) || (verticalDirection == "up" && !isOverBottomHalf)); 394 } 395 396 }, 397 398 _getDragVerticalDirection: function() { 399 var delta = this.positionAbs.top - this.lastPositionAbs.top; 400 return delta != 0 && (delta > 0 ? "down" : "up"); 401 }, 402 403 _getDragHorizontalDirection: function() { 404 var delta = this.positionAbs.left - this.lastPositionAbs.left; 405 return delta != 0 && (delta > 0 ? "right" : "left"); 406 }, 407 408 refresh: function(event) { 409 this._refreshItems(event); 410 this.refreshPositions(); 411 }, 412 413 _getItemsAsjQuery: function(connected) { 414 415 var self = this; 416 var items = []; 417 var queries = []; 418 419 if(this.options.connectWith && connected) { 420 for (var i = this.options.connectWith.length - 1; i >= 0; i--){ 421 var cur = $(this.options.connectWith[i]); 422 for (var j = cur.length - 1; j >= 0; j--){ 423 var inst = $.data(cur[j], 'sortable'); 424 if(inst && inst != this && !inst.options.disabled) { 425 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper"), inst]); 426 } 427 }; 428 }; 429 } 430 431 queries.push([$.isFunction(this.options.items) ? this.options.items.call(this.element, null, { options: this.options, item: this.currentItem }) : $(this.options.items, this.element).not(".ui-sortable-helper"), this]); 432 433 for (var i = queries.length - 1; i >= 0; i--){ 434 queries[i][0].each(function() { 435 items.push(this); 436 }); 437 }; 438 439 return $(items); 440 441 }, 442 443 _removeCurrentsFromItems: function() { 444 445 var list = this.currentItem.find(":data(sortable-item)"); 446 447 for (var i=0; i < this.items.length; i++) { 448 449 for (var j=0; j < list.length; j++) { 450 if(list[j] == this.items[i].item[0]) 451 this.items.splice(i,1); 452 }; 453 454 }; 455 456 }, 457 458 _refreshItems: function(event) { 459 460 this.items = []; 461 this.containers = [this]; 462 var items = this.items; 463 var self = this; 464 var queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]]; 465 466 if(this.options.connectWith) { 467 for (var i = this.options.connectWith.length - 1; i >= 0; i--){ 468 var cur = $(this.options.connectWith[i]); 469 for (var j = cur.length - 1; j >= 0; j--){ 470 var inst = $.data(cur[j], 'sortable'); 471 if(inst && inst != this && !inst.options.disabled) { 472 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]); 473 this.containers.push(inst); 474 } 475 }; 476 }; 477 } 478 479 for (var i = queries.length - 1; i >= 0; i--) { 480 var targetData = queries[i][1]; 481 var _queries = queries[i][0]; 482 483 for (var j=0, queriesLength = _queries.length; j < queriesLength; j++) { 484 var item = $(_queries[j]); 485 486 item.data('sortable-item', targetData); // Data for target checking (mouse manager) 487 488 items.push({ 489 item: item, 490 instance: targetData, 491 width: 0, height: 0, 492 left: 0, top: 0 493 }); 494 }; 495 }; 496 497 }, 498 499 refreshPositions: function(fast) { 500 501 //This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change 502 if(this.offsetParent && this.helper) { 503 this.offset.parent = this._getParentOffset(); 504 } 505 506 for (var i = this.items.length - 1; i >= 0; i--){ 507 var item = this.items[i]; 508 509 //We ignore calculating positions of all connected containers when we're not over them 510 if(item.instance != this.currentContainer && this.currentContainer && item.item[0] != this.currentItem[0]) 511 continue; 512 513 var t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item; 514 515 if (!fast) { 516 if (this.options.accurateIntersection) { 517 item.width = t.outerWidth(); 518 item.height = t.outerHeight(); 519 } 520 else { 521 item.width = t[0].offsetWidth; 522 item.height = t[0].offsetHeight; 523 } 524 } 525 526 var p = t.offset(); 527 item.left = p.left; 528 item.top = p.top; 529 }; 530 531 if(this.options.custom && this.options.custom.refreshContainers) { 532 this.options.custom.refreshContainers.call(this); 533 } else { 534 for (var i = this.containers.length - 1; i >= 0; i--){ 535 var p = this.containers[i].element.offset(); 536 this.containers[i].containerCache.left = p.left; 537 this.containers[i].containerCache.top = p.top; 538 this.containers[i].containerCache.width = this.containers[i].element.outerWidth(); 539 this.containers[i].containerCache.height = this.containers[i].element.outerHeight(); 540 }; 541 } 542 543 }, 544 545 _createPlaceholder: function(that) { 546 547 var self = that || this, o = self.options; 548 549 if(!o.placeholder || o.placeholder.constructor == String) { 550 var className = o.placeholder; 551 o.placeholder = { 552 element: function() { 553 554 var el = $(document.createElement(self.currentItem[0].nodeName)) 555 .addClass(className || self.currentItem[0].className+" ui-sortable-placeholder") 556 .removeClass('ui-sortable-helper')[0]; 557 558 if(!className) { 559 el.style.visibility = "hidden"; 560 document.body.appendChild(el); 561 // Name attributes are removed, otherwice causes elements to be unchecked 562 // Expando attributes also have to be removed because of stupid IE (no condition, doesn't hurt in other browsers) 563 el.innerHTML = self.currentItem[0].innerHTML.replace(/name\=\"[^\"\']+\"/g, '').replace(/jQuery[0-9]+\=\"[^\"\']+\"/g, ''); 564 document.body.removeChild(el); 565 }; 566 567 return el; 568 }, 569 update: function(container, p) { 570 if(className && !o.forcePlaceholderSize) return; 571 if(!p.height()) { p.height(self.currentItem.innerHeight() - parseInt(self.currentItem.css('paddingTop')||0, 10) - parseInt(self.currentItem.css('paddingBottom')||0, 10)); }; 572 if(!p.width()) { p.width(self.currentItem.innerWidth() - parseInt(self.currentItem.css('paddingLeft')||0, 10) - parseInt(self.currentItem.css('paddingRight')||0, 10)); }; 573 } 574 }; 575 } 576 577 //Create the placeholder 578 self.placeholder = $(o.placeholder.element.call(self.element, self.currentItem)); 579 580 //Append it after the actual current item 581 self.currentItem.after(self.placeholder); 582 583 //Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317) 584 o.placeholder.update(self, self.placeholder); 585 586 }, 587 588 _contactContainers: function(event) { 589 for (var i = this.containers.length - 1; i >= 0; i--){ 590 591 if(this._intersectsWith(this.containers[i].containerCache)) { 592 if(!this.containers[i].containerCache.over) { 593 594 if(this.currentContainer != this.containers[i]) { 595 596 //When entering a new container, we will find the item with the least distance and append our item near it 597 var dist = 10000; var itemWithLeastDistance = null; var base = this.positionAbs[this.containers[i].floating ? 'left' : 'top']; 598 for (var j = this.items.length - 1; j >= 0; j--) { 599 if(!$.ui.contains(this.containers[i].element[0], this.items[j].item[0])) continue; 600 var cur = this.items[j][this.containers[i].floating ? 'left' : 'top']; 601 if(Math.abs(cur - base) < dist) { 602 dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j]; 603 } 604 } 605 606 if(!itemWithLeastDistance && !this.options.dropOnEmpty) //Check if dropOnEmpty is enabled 607 continue; 608 609 this.currentContainer = this.containers[i]; 610 itemWithLeastDistance ? this.options.sortIndicator.call(this, event, itemWithLeastDistance, null, true) : this.options.sortIndicator.call(this, event, null, this.containers[i].element, true); 611 this._propagate("change", event); //Call plugins and callbacks 612 this.containers[i]._propagate("change", event, this); //Call plugins and callbacks 613 614 //Update the placeholder 615 this.options.placeholder.update(this.currentContainer, this.placeholder); 616 617 } 618 619 this.containers[i]._propagate("over", event, this); 620 this.containers[i].containerCache.over = 1; 621 } 622 } else { 623 if(this.containers[i].containerCache.over) { 624 this.containers[i]._propagate("out", event, this); 625 this.containers[i].containerCache.over = 0; 626 } 627 } 628 629 }; 630 }, 631 632 _createHelper: function(event) { 633 634 var o = this.options; 635 var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper == 'clone' ? this.currentItem.clone() : this.currentItem); 636 637 if(!helper.parents('body').length) //Add the helper to the DOM if that didn't happen already 638 $(o.appendTo != 'parent' ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]); 639 640 if(helper[0] == this.currentItem[0]) 641 this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") }; 642 643 if(helper[0].style.width == '' || o.forceHelperSize) helper.width(this.currentItem.width()); 644 if(helper[0].style.height == '' || o.forceHelperSize) helper.height(this.currentItem.height()); 645 646 return helper; 647 648 }, 649 650 _adjustOffsetFromHelper: function(obj) { 651 if(obj.left != undefined) this.offset.click.left = obj.left + this.margins.left; 652 if(obj.right != undefined) this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left; 653 if(obj.top != undefined) this.offset.click.top = obj.top + this.margins.top; 654 if(obj.bottom != undefined) this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top; 655 }, 656 657 _getParentOffset: function() { 658 659 //Get the offsetParent and cache its position 660 this.offsetParent = this.helper.offsetParent(); var po = this.offsetParent.offset(); 661 662 if((this.offsetParent[0] == document.body && $.browser.mozilla) //Ugly FF3 fix 663 || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix 664 po = { top: 0, left: 0 }; 665 666 return { 667 top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0), 668 left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0) 669 }; 670 671 }, 672 673 _getRelativeOffset: function() { 674 675 if(this.cssPosition == "relative") { 676 var p = this.currentItem.position(); 677 return { 678 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(), 679 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft() 680 }; 681 } else { 682 return { top: 0, left: 0 }; 683 } 684 685 }, 686 687 _cacheMargins: function() { 688 this.margins = { 689 left: (parseInt(this.currentItem.css("marginLeft"),10) || 0), 690 top: (parseInt(this.currentItem.css("marginTop"),10) || 0) 691 }; 692 }, 693 694 _cacheHelperProportions: function() { 695 this.helperProportions = { 696 width: this.helper.outerWidth(), 697 height: this.helper.outerHeight() 698 }; 699 }, 700 701 _setContainment: function() { 702 703 var o = this.options; 704 if(o.containment == 'parent') o.containment = this.helper[0].parentNode; 705 if(o.containment == 'document' || o.containment == 'window') this.containment = [ 706 0 - this.offset.relative.left - this.offset.parent.left, 707 0 - this.offset.relative.top - this.offset.parent.top, 708 $(o.containment == 'document' ? document : window).width() - this.offset.relative.left - this.offset.parent.left - this.margins.left - (parseInt(this.currentItem.css("marginRight"),10) || 0), 709 ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.offset.relative.top - this.offset.parent.top - this.margins.top - (parseInt(this.currentItem.css("marginBottom"),10) || 0) 710 ]; 711 712 if(!(/^(document|window|parent)$/).test(o.containment)) { 713 var ce = $(o.containment)[0]; 714 var co = $(o.containment).offset(); 715 var over = ($(ce).css("overflow") != 'hidden'); 716 717 this.containment = [ 718 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.margins.left, 719 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.margins.top, 720 co.left + (over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.margins.left, 721 co.top + (over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.margins.top 722 ]; 723 } 724 725 }, 726 727 _convertPositionTo: function(d, pos) { 728 729 if(!pos) pos = this.position; 730 var mod = d == "absolute" ? 1 : -1; 731 var scroll = this[(this.cssPosition == 'absolute' ? 'offset' : 'scroll')+'Parent'], scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); 732 733 return { 734 top: ( 735 pos.top // the calculated relative position 736 + this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent 737 + this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border) 738 + ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod 739 + this.margins.top * mod //Add the margin (you don't want the margin counting in intersection methods) 740 ), 741 left: ( 742 pos.left // the calculated relative position 743 + this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent 744 + this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border) 745 + ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : ( scrollIsRootNode ? 0 : scroll.scrollLeft() ) ) * mod 746 + this.margins.left * mod //Add the margin (you don't want the margin counting in intersection methods) 747 ) 748 }; 749 }, 750 751 _generatePosition: function(event) { 752 753 var o = this.options, scroll = this[(this.cssPosition == 'absolute' ? 'offset' : 'scroll')+'Parent'], scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); 754 755 var position = { 756 top: ( 757 event.pageY // The absolute mouse position 758 - this.offset.click.top // Click offset (relative to the element) 759 - this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent 760 - this.offset.parent.top // The offsetParent's offset without borders (offset + border) 761 + ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) 762 ), 763 left: ( 764 event.pageX // The absolute mouse position 765 - this.offset.click.left // Click offset (relative to the element) 766 - this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent 767 - this.offset.parent.left // The offsetParent's offset without borders (offset + border) 768 + ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : ( scrollIsRootNode ? 0 : scroll.scrollLeft() ) ) 769 ) 770 }; 771 772 if(!this.originalPosition) return position; //If we are not dragging yet, we won't check for options 773 774 /* 775 * - Position constraining - 776 * Constrain the position to a mix of grid, containment. 777 */ 778 if(this.containment) { 779 if(position.left < this.containment[0]) position.left = this.containment[0]; 780 if(position.top < this.containment[1]) position.top = this.containment[1]; 781 if(position.left + this.helperProportions.width > this.containment[2]) position.left = this.containment[2] - this.helperProportions.width; 782 if(position.top + this.helperProportions.height > this.containment[3]) position.top = this.containment[3] - this.helperProportions.height; 783 } 784 785 if(o.grid) { 786 var top = this.originalPosition.top + Math.round((position.top - this.originalPosition.top) / o.grid[1]) * o.grid[1]; 787 position.top = this.containment ? (!(top < this.containment[1] || top > this.containment[3]) ? top : (!(top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top; 788 789 var left = this.originalPosition.left + Math.round((position.left - this.originalPosition.left) / o.grid[0]) * o.grid[0]; 790 position.left = this.containment ? (!(left < this.containment[0] || left > this.containment[2]) ? left : (!(left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left; 791 } 792 793 return position; 794 }, 795 796 _rearrange: function(event, i, a, hardRefresh) { 797 798 a ? a[0].appendChild(this.placeholder[0]) : i.item[0].parentNode.insertBefore(this.placeholder[0], (this.direction == 'down' ? i.item[0] : i.item[0].nextSibling)); 799 800 //Various things done here to improve the performance: 801 // 1. we create a setTimeout, that calls refreshPositions 802 // 2. on the instance, we have a counter variable, that get's higher after every append 803 // 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same 804 // 4. this lets only the last addition to the timeout stack through 805 this.counter = this.counter ? ++this.counter : 1; 806 var self = this, counter = this.counter; 807 808 window.setTimeout(function() { 809 if(counter == self.counter) self.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove 810 },0); 811 812 }, 813 814 _clear: function(event, noPropagation) { 815 816 this.reverting = false; 817 818 //We first have to update the dom position of the actual currentItem 819 if(!this._noFinalSort) this.placeholder.before(this.currentItem); 820 this._noFinalSort = null; 821 822 if(this.helper[0] == this.currentItem[0]) { 823 for(var i in this._storedCSS) { 824 if(this._storedCSS[i] == 'auto' || this._storedCSS[i] == 'static') this._storedCSS[i] = ''; 825 } 826 this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper"); 827 } else { 828 this.currentItem.show(); 829 } 830 831 if(this.domPosition.prev != this.currentItem.prev().not(".ui-sortable-helper")[0] || this.domPosition.parent != this.currentItem.parent()[0]) this._propagate("update", event, null, noPropagation); //Trigger update callback if the DOM position has changed 832 if(!$.ui.contains(this.element[0], this.currentItem[0])) { //Node was moved out of the current element 833 this._propagate("remove", event, null, noPropagation); 834 for (var i = this.containers.length - 1; i >= 0; i--){ 835 if($.ui.contains(this.containers[i].element[0], this.currentItem[0])) { 836 this.containers[i]._propagate("update", event, this, noPropagation); 837 this.containers[i]._propagate("receive", event, this, noPropagation); 838 } 839 }; 840 }; 841 842 //Post events to containers 843 for (var i = this.containers.length - 1; i >= 0; i--){ 844 this.containers[i]._propagate("deactivate", event, this, noPropagation); 845 if(this.containers[i].containerCache.over) { 846 this.containers[i]._propagate("out", event, this); 847 this.containers[i].containerCache.over = 0; 848 } 849 } 850 851 this.dragging = false; 852 if(this.cancelHelperRemoval) { 853 this._propagate("beforeStop", event, null, noPropagation); 854 this._propagate("stop", event, null, noPropagation); 855 return false; 856 } 857 858 this._propagate("beforeStop", event, null, noPropagation); 859 860 //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node! 861 this.placeholder[0].parentNode.removeChild(this.placeholder[0]); 862 863 if(this.options.helper != "original") this.helper.remove(); this.helper = null; 864 this._propagate("stop", event, null, noPropagation); 865 866 return true; 867 868 }, 869 870 _propagate: function(n, event, inst, noPropagation) { 871 $.ui.plugin.call(this, n, [event, this._ui(inst)]); 872 var dontCancel = !noPropagation ? this.element.triggerHandler(n == "sort" ? n : "sort"+n, [event, this._ui(inst)], this.options[n]) : true; 873 if(dontCancel === false) this.cancel(); 874 }, 875 876 plugins: {}, 877 878 _ui: function(inst) { 879 var self = inst || this; 880 return { 881 helper: self.helper, 882 placeholder: self.placeholder || $([]), 883 position: self.position, 884 absolutePosition: self.positionAbs, 885 item: self.currentItem, 886 sender: inst ? inst.element : null 887 }; 888 } 889 890 })); 891 892 $.extend($.ui.sortable, { 893 getter: "serialize toArray", 894 version: "1.6", 895 defaults: { 896 accurateIntersection: true, 897 appendTo: "parent", 898 cancel: ":input", 899 delay: 0, 900 distance: 1, 901 dropOnEmpty: true, 902 forcePlaceholderSize: false, 903 forceHelperSize: false, 904 helper: "original", 905 items: '> *', 906 scope: "default", 907 scroll: true, 908 scrollSensitivity: 20, 909 scrollSpeed: 20, 910 sortIndicator: $.ui.sortable.prototype._rearrange, 911 tolerance: "default", 912 zIndex: 1000 913 } 914 }); 915 916 /* 917 * Sortable Extensions 918 */ 919 920 $.ui.plugin.add("sortable", "cursor", { 921 start: function(event, ui) { 922 var t = $('body'), i = $(this).data('sortable'); 923 if (t.css("cursor")) i.options._cursor = t.css("cursor"); 924 t.css("cursor", i.options.cursor); 925 }, 926 beforeStop: function(event, ui) { 927 var i = $(this).data('sortable'); 928 if (i.options._cursor) $('body').css("cursor", i.options._cursor); 929 } 930 }); 931 932 $.ui.plugin.add("sortable", "opacity", { 933 start: function(event, ui) { 934 var t = ui.helper, i = $(this).data('sortable'); 935 if(t.css("opacity")) i.options._opacity = t.css("opacity"); 936 t.css('opacity', i.options.opacity); 937 }, 938 beforeStop: function(event, ui) { 939 var i = $(this).data('sortable'); 940 if(i.options._opacity) $(ui.helper).css('opacity', i.options._opacity); 941 } 942 }); 943 944 $.ui.plugin.add("sortable", "scroll", { 945 start: function(event, ui) { 946 var i = $(this).data("sortable"), o = i.options; 947 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') i.overflowOffset = i.scrollParent.offset(); 948 }, 949 sort: function(event, ui) { 950 951 var i = $(this).data("sortable"), o = i.options, scrolled = false; 952 953 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') { 954 955 if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) 956 i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed; 957 else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity) 958 i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed; 959 960 if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) 961 i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed; 962 else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity) 963 i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed; 964 965 } else { 966 967 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) 968 scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed); 969 else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) 970 scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed); 971 972 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) 973 scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed); 974 else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) 975 scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed); 976 977 } 978 979 if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) 980 $.ui.ddmanager.prepareOffsets(i, event); 981 982 983 984 //This is a special case where we need to modify a offset calculated on start, since the following happened: 985 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent 986 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that 987 // the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag 988 if(scrolled !== false && i.cssPosition == 'absolute' && i.scrollParent[0] != document && $.ui.contains(i.scrollParent[0], i.offsetParent[0])) { 989 i.offset.parent = i._getParentOffset(); 990 } 991 992 // This is another very weird special case that only happens for relative elements: 993 // 1. If the css position is relative 994 // 2. and the scroll parent is the document or similar to the offset parent 995 // we have to refresh the relative offset during the scroll so there are no jumps 996 if(scrolled !== false && i.cssPosition == 'relative' && !(i.scrollParent[0] != document && i.scrollParent[0] != i.offsetParent[0])) { 997 i.offset.relative = i._getRelativeOffset(); 998 } 999 1000 } 1001 }); 1002 1003 $.ui.plugin.add("sortable", "zIndex", { 1004 start: function(event, ui) { 1005 var t = ui.helper, i = $(this).data('sortable'); 1006 if(t.css("zIndex")) i.options._zIndex = t.css("zIndex"); 1007 t.css('zIndex', i.options.zIndex); 1008 }, 1009 beforeStop: function(event, ui) { 1010 var i = $(this).data('sortable'); 1011 if(i.options._zIndex) $(ui.helper).css('zIndex', i.options._zIndex == 'auto' ? '' : i.options._zIndex); 1012 } 1013 }); 1014 1015 })(jQuery);
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| Generated: Thu Mar 24 11:18:33 2011 | Cross-referenced by PHPXref 0.7 |