| [ Index ] |
PHP Cross Reference of MediaWiki-1.24.0 |
[Summary view] [Print] [Text view]
1 /*! 2 * jQuery UI Sortable 1.9.2 3 * http://jqueryui.com 4 * 5 * Copyright 2012 jQuery Foundation and other contributors 6 * Released under the MIT license. 7 * http://jquery.org/license 8 * 9 * http://api.jqueryui.com/sortable/ 10 * 11 * Depends: 12 * jquery.ui.core.js 13 * jquery.ui.mouse.js 14 * jquery.ui.widget.js 15 */ 16 (function( $, undefined ) { 17 18 $.widget("ui.sortable", $.ui.mouse, { 19 version: "1.9.2", 20 widgetEventPrefix: "sort", 21 ready: false, 22 options: { 23 appendTo: "parent", 24 axis: false, 25 connectWith: false, 26 containment: false, 27 cursor: 'auto', 28 cursorAt: false, 29 dropOnEmpty: true, 30 forcePlaceholderSize: false, 31 forceHelperSize: false, 32 grid: false, 33 handle: false, 34 helper: "original", 35 items: '> *', 36 opacity: false, 37 placeholder: false, 38 revert: false, 39 scroll: true, 40 scrollSensitivity: 20, 41 scrollSpeed: 20, 42 scope: "default", 43 tolerance: "intersect", 44 zIndex: 1000 45 }, 46 _create: function() { 47 48 var o = this.options; 49 this.containerCache = {}; 50 this.element.addClass("ui-sortable"); 51 52 //Get the items 53 this.refresh(); 54 55 //Let's determine if the items are being displayed horizontally 56 this.floating = this.items.length ? o.axis === 'x' || (/left|right/).test(this.items[0].item.css('float')) || (/inline|table-cell/).test(this.items[0].item.css('display')) : false; 57 58 //Let's determine the parent's offset 59 this.offset = this.element.offset(); 60 61 //Initialize mouse events for interaction 62 this._mouseInit(); 63 64 //We're ready to go 65 this.ready = true 66 67 }, 68 69 _destroy: function() { 70 this.element 71 .removeClass("ui-sortable ui-sortable-disabled"); 72 this._mouseDestroy(); 73 74 for ( var i = this.items.length - 1; i >= 0; i-- ) 75 this.items[i].item.removeData(this.widgetName + "-item"); 76 77 return this; 78 }, 79 80 _setOption: function(key, value){ 81 if ( key === "disabled" ) { 82 this.options[ key ] = value; 83 84 this.widget().toggleClass( "ui-sortable-disabled", !!value ); 85 } else { 86 // Don't call widget base _setOption for disable as it adds ui-state-disabled class 87 $.Widget.prototype._setOption.apply(this, arguments); 88 } 89 }, 90 91 _mouseCapture: function(event, overrideHandle) { 92 var that = this; 93 94 if (this.reverting) { 95 return false; 96 } 97 98 if(this.options.disabled || this.options.type == 'static') return false; 99 100 //We have to refresh the items data once first 101 this._refreshItems(event); 102 103 //Find out if the clicked node (or one of its parents) is a actual item in this.items 104 var currentItem = null, nodes = $(event.target).parents().each(function() { 105 if($.data(this, that.widgetName + '-item') == that) { 106 currentItem = $(this); 107 return false; 108 } 109 }); 110 if($.data(event.target, that.widgetName + '-item') == that) currentItem = $(event.target); 111 112 if(!currentItem) return false; 113 if(this.options.handle && !overrideHandle) { 114 var validHandle = false; 115 116 $(this.options.handle, currentItem).find("*").andSelf().each(function() { if(this == event.target) validHandle = true; }); 117 if(!validHandle) return false; 118 } 119 120 this.currentItem = currentItem; 121 this._removeCurrentsFromItems(); 122 return true; 123 124 }, 125 126 _mouseStart: function(event, overrideHandle, noActivation) { 127 128 var o = this.options; 129 this.currentContainer = this; 130 131 //We only need to call refreshPositions, because the refreshItems call has been moved to mouseCapture 132 this.refreshPositions(); 133 134 //Create and append the visible helper 135 this.helper = this._createHelper(event); 136 137 //Cache the helper size 138 this._cacheHelperProportions(); 139 140 /* 141 * - Position generation - 142 * This block generates everything position related - it's the core of draggables. 143 */ 144 145 //Cache the margins of the original element 146 this._cacheMargins(); 147 148 //Get the next scrolling parent 149 this.scrollParent = this.helper.scrollParent(); 150 151 //The element's absolute position on the page minus margins 152 this.offset = this.currentItem.offset(); 153 this.offset = { 154 top: this.offset.top - this.margins.top, 155 left: this.offset.left - this.margins.left 156 }; 157 158 $.extend(this.offset, { 159 click: { //Where the click happened, relative to the element 160 left: event.pageX - this.offset.left, 161 top: event.pageY - this.offset.top 162 }, 163 parent: this._getParentOffset(), 164 relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper 165 }); 166 167 // Only after we got the offset, we can change the helper's position to absolute 168 // TODO: Still need to figure out a way to make relative sorting possible 169 this.helper.css("position", "absolute"); 170 this.cssPosition = this.helper.css("position"); 171 172 //Generate the original position 173 this.originalPosition = this._generatePosition(event); 174 this.originalPageX = event.pageX; 175 this.originalPageY = event.pageY; 176 177 //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied 178 (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt)); 179 180 //Cache the former DOM position 181 this.domPosition = { prev: this.currentItem.prev()[0], parent: this.currentItem.parent()[0] }; 182 183 //If the helper is not the original, hide the original so it's not playing any role during the drag, won't cause anything bad this way 184 if(this.helper[0] != this.currentItem[0]) { 185 this.currentItem.hide(); 186 } 187 188 //Create the placeholder 189 this._createPlaceholder(); 190 191 //Set a containment if given in the options 192 if(o.containment) 193 this._setContainment(); 194 195 if(o.cursor) { // cursor option 196 if ($('body').css("cursor")) this._storedCursor = $('body').css("cursor"); 197 $('body').css("cursor", o.cursor); 198 } 199 200 if(o.opacity) { // opacity option 201 if (this.helper.css("opacity")) this._storedOpacity = this.helper.css("opacity"); 202 this.helper.css("opacity", o.opacity); 203 } 204 205 if(o.zIndex) { // zIndex option 206 if (this.helper.css("zIndex")) this._storedZIndex = this.helper.css("zIndex"); 207 this.helper.css("zIndex", o.zIndex); 208 } 209 210 //Prepare scrolling 211 if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML') 212 this.overflowOffset = this.scrollParent.offset(); 213 214 //Call callbacks 215 this._trigger("start", event, this._uiHash()); 216 217 //Recache the helper size 218 if(!this._preserveHelperProportions) 219 this._cacheHelperProportions(); 220 221 222 //Post 'activate' events to possible containers 223 if(!noActivation) { 224 for (var i = this.containers.length - 1; i >= 0; i--) { this.containers[i]._trigger("activate", event, this._uiHash(this)); } 225 } 226 227 //Prepare possible droppables 228 if($.ui.ddmanager) 229 $.ui.ddmanager.current = this; 230 231 if ($.ui.ddmanager && !o.dropBehaviour) 232 $.ui.ddmanager.prepareOffsets(this, event); 233 234 this.dragging = true; 235 236 this.helper.addClass("ui-sortable-helper"); 237 this._mouseDrag(event); //Execute the drag once - this causes the helper not to be visible before getting its correct position 238 return true; 239 240 }, 241 242 _mouseDrag: function(event) { 243 244 //Compute the helpers position 245 this.position = this._generatePosition(event); 246 this.positionAbs = this._convertPositionTo("absolute"); 247 248 if (!this.lastPositionAbs) { 249 this.lastPositionAbs = this.positionAbs; 250 } 251 252 //Do scrolling 253 if(this.options.scroll) { 254 var o = this.options, scrolled = false; 255 if(this.scrollParent[0] != document && this.scrollParent[0].tagName != 'HTML') { 256 257 if((this.overflowOffset.top + this.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) 258 this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop + o.scrollSpeed; 259 else if(event.pageY - this.overflowOffset.top < o.scrollSensitivity) 260 this.scrollParent[0].scrollTop = scrolled = this.scrollParent[0].scrollTop - o.scrollSpeed; 261 262 if((this.overflowOffset.left + this.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) 263 this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft + o.scrollSpeed; 264 else if(event.pageX - this.overflowOffset.left < o.scrollSensitivity) 265 this.scrollParent[0].scrollLeft = scrolled = this.scrollParent[0].scrollLeft - o.scrollSpeed; 266 267 } else { 268 269 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) 270 scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed); 271 else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) 272 scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed); 273 274 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) 275 scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed); 276 else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) 277 scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed); 278 279 } 280 281 if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) 282 $.ui.ddmanager.prepareOffsets(this, event); 283 } 284 285 //Regenerate the absolute position used for position checks 286 this.positionAbs = this._convertPositionTo("absolute"); 287 288 //Set the helper position 289 if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px'; 290 if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px'; 291 292 //Rearrange 293 for (var i = this.items.length - 1; i >= 0; i--) { 294 295 //Cache variables and intersection, continue if no intersection 296 var item = this.items[i], itemElement = item.item[0], intersection = this._intersectsWithPointer(item); 297 if (!intersection) continue; 298 299 // Only put the placeholder inside the current Container, skip all 300 // items form other containers. This works because when moving 301 // an item from one container to another the 302 // currentContainer is switched before the placeholder is moved. 303 // 304 // Without this moving items in "sub-sortables" can cause the placeholder to jitter 305 // beetween the outer and inner container. 306 if (item.instance !== this.currentContainer) continue; 307 308 if (itemElement != this.currentItem[0] //cannot intersect with itself 309 && this.placeholder[intersection == 1 ? "next" : "prev"]()[0] != itemElement //no useless actions that have been done before 310 && !$.contains(this.placeholder[0], itemElement) //no action if the item moved is the parent of the item checked 311 && (this.options.type == 'semi-dynamic' ? !$.contains(this.element[0], itemElement) : true) 312 //&& itemElement.parentNode == this.placeholder[0].parentNode // only rearrange items within the same container 313 ) { 314 315 this.direction = intersection == 1 ? "down" : "up"; 316 317 if (this.options.tolerance == "pointer" || this._intersectsWithSides(item)) { 318 this._rearrange(event, item); 319 } else { 320 break; 321 } 322 323 this._trigger("change", event, this._uiHash()); 324 break; 325 } 326 } 327 328 //Post events to containers 329 this._contactContainers(event); 330 331 //Interconnect with droppables 332 if($.ui.ddmanager) $.ui.ddmanager.drag(this, event); 333 334 //Call callbacks 335 this._trigger('sort', event, this._uiHash()); 336 337 this.lastPositionAbs = this.positionAbs; 338 return false; 339 340 }, 341 342 _mouseStop: function(event, noPropagation) { 343 344 if(!event) return; 345 346 //If we are using droppables, inform the manager about the drop 347 if ($.ui.ddmanager && !this.options.dropBehaviour) 348 $.ui.ddmanager.drop(this, event); 349 350 if(this.options.revert) { 351 var that = this; 352 var cur = this.placeholder.offset(); 353 354 this.reverting = true; 355 356 $(this.helper).animate({ 357 left: cur.left - this.offset.parent.left - this.margins.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft), 358 top: cur.top - this.offset.parent.top - this.margins.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop) 359 }, parseInt(this.options.revert, 10) || 500, function() { 360 that._clear(event); 361 }); 362 } else { 363 this._clear(event, noPropagation); 364 } 365 366 return false; 367 368 }, 369 370 cancel: function() { 371 372 if(this.dragging) { 373 374 this._mouseUp({ target: null }); 375 376 if(this.options.helper == "original") 377 this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper"); 378 else 379 this.currentItem.show(); 380 381 //Post deactivating events to containers 382 for (var i = this.containers.length - 1; i >= 0; i--){ 383 this.containers[i]._trigger("deactivate", null, this._uiHash(this)); 384 if(this.containers[i].containerCache.over) { 385 this.containers[i]._trigger("out", null, this._uiHash(this)); 386 this.containers[i].containerCache.over = 0; 387 } 388 } 389 390 } 391 392 if (this.placeholder) { 393 //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node! 394 if(this.placeholder[0].parentNode) this.placeholder[0].parentNode.removeChild(this.placeholder[0]); 395 if(this.options.helper != "original" && this.helper && this.helper[0].parentNode) this.helper.remove(); 396 397 $.extend(this, { 398 helper: null, 399 dragging: false, 400 reverting: false, 401 _noFinalSort: null 402 }); 403 404 if(this.domPosition.prev) { 405 $(this.domPosition.prev).after(this.currentItem); 406 } else { 407 $(this.domPosition.parent).prepend(this.currentItem); 408 } 409 } 410 411 return this; 412 413 }, 414 415 serialize: function(o) { 416 417 var items = this._getItemsAsjQuery(o && o.connected); 418 var str = []; o = o || {}; 419 420 $(items).each(function() { 421 var res = ($(o.item || this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/)); 422 if(res) str.push((o.key || res[1]+'[]')+'='+(o.key && o.expression ? res[1] : res[2])); 423 }); 424 425 if(!str.length && o.key) { 426 str.push(o.key + '='); 427 } 428 429 return str.join('&'); 430 431 }, 432 433 toArray: function(o) { 434 435 var items = this._getItemsAsjQuery(o && o.connected); 436 var ret = []; o = o || {}; 437 438 items.each(function() { ret.push($(o.item || this).attr(o.attribute || 'id') || ''); }); 439 return ret; 440 441 }, 442 443 /* Be careful with the following core functions */ 444 _intersectsWith: function(item) { 445 446 var x1 = this.positionAbs.left, 447 x2 = x1 + this.helperProportions.width, 448 y1 = this.positionAbs.top, 449 y2 = y1 + this.helperProportions.height; 450 451 var l = item.left, 452 r = l + item.width, 453 t = item.top, 454 b = t + item.height; 455 456 var dyClick = this.offset.click.top, 457 dxClick = this.offset.click.left; 458 459 var isOverElement = (y1 + dyClick) > t && (y1 + dyClick) < b && (x1 + dxClick) > l && (x1 + dxClick) < r; 460 461 if( this.options.tolerance == "pointer" 462 || this.options.forcePointerForContainers 463 || (this.options.tolerance != "pointer" && this.helperProportions[this.floating ? 'width' : 'height'] > item[this.floating ? 'width' : 'height']) 464 ) { 465 return isOverElement; 466 } else { 467 468 return (l < x1 + (this.helperProportions.width / 2) // Right Half 469 && x2 - (this.helperProportions.width / 2) < r // Left Half 470 && t < y1 + (this.helperProportions.height / 2) // Bottom Half 471 && y2 - (this.helperProportions.height / 2) < b ); // Top Half 472 473 } 474 }, 475 476 _intersectsWithPointer: function(item) { 477 478 var isOverElementHeight = (this.options.axis === 'x') || $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top, item.height), 479 isOverElementWidth = (this.options.axis === 'y') || $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left, item.width), 480 isOverElement = isOverElementHeight && isOverElementWidth, 481 verticalDirection = this._getDragVerticalDirection(), 482 horizontalDirection = this._getDragHorizontalDirection(); 483 484 if (!isOverElement) 485 return false; 486 487 return this.floating ? 488 ( ((horizontalDirection && horizontalDirection == "right") || verticalDirection == "down") ? 2 : 1 ) 489 : ( verticalDirection && (verticalDirection == "down" ? 2 : 1) ); 490 491 }, 492 493 _intersectsWithSides: function(item) { 494 495 var isOverBottomHalf = $.ui.isOverAxis(this.positionAbs.top + this.offset.click.top, item.top + (item.height/2), item.height), 496 isOverRightHalf = $.ui.isOverAxis(this.positionAbs.left + this.offset.click.left, item.left + (item.width/2), item.width), 497 verticalDirection = this._getDragVerticalDirection(), 498 horizontalDirection = this._getDragHorizontalDirection(); 499 500 if (this.floating && horizontalDirection) { 501 return ((horizontalDirection == "right" && isOverRightHalf) || (horizontalDirection == "left" && !isOverRightHalf)); 502 } else { 503 return verticalDirection && ((verticalDirection == "down" && isOverBottomHalf) || (verticalDirection == "up" && !isOverBottomHalf)); 504 } 505 506 }, 507 508 _getDragVerticalDirection: function() { 509 var delta = this.positionAbs.top - this.lastPositionAbs.top; 510 return delta != 0 && (delta > 0 ? "down" : "up"); 511 }, 512 513 _getDragHorizontalDirection: function() { 514 var delta = this.positionAbs.left - this.lastPositionAbs.left; 515 return delta != 0 && (delta > 0 ? "right" : "left"); 516 }, 517 518 refresh: function(event) { 519 this._refreshItems(event); 520 this.refreshPositions(); 521 return this; 522 }, 523 524 _connectWith: function() { 525 var options = this.options; 526 return options.connectWith.constructor == String 527 ? [options.connectWith] 528 : options.connectWith; 529 }, 530 531 _getItemsAsjQuery: function(connected) { 532 533 var items = []; 534 var queries = []; 535 var connectWith = this._connectWith(); 536 537 if(connectWith && connected) { 538 for (var i = connectWith.length - 1; i >= 0; i--){ 539 var cur = $(connectWith[i]); 540 for (var j = cur.length - 1; j >= 0; j--){ 541 var inst = $.data(cur[j], this.widgetName); 542 if(inst && inst != this && !inst.options.disabled) { 543 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element) : $(inst.options.items, inst.element).not(".ui-sortable-helper").not('.ui-sortable-placeholder'), inst]); 544 } 545 }; 546 }; 547 } 548 549 queries.push([$.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").not('.ui-sortable-placeholder'), this]); 550 551 for (var i = queries.length - 1; i >= 0; i--){ 552 queries[i][0].each(function() { 553 items.push(this); 554 }); 555 }; 556 557 return $(items); 558 559 }, 560 561 _removeCurrentsFromItems: function() { 562 563 var list = this.currentItem.find(":data(" + this.widgetName + "-item)"); 564 565 this.items = $.grep(this.items, function (item) { 566 for (var j=0; j < list.length; j++) { 567 if(list[j] == item.item[0]) 568 return false; 569 }; 570 return true; 571 }); 572 573 }, 574 575 _refreshItems: function(event) { 576 577 this.items = []; 578 this.containers = [this]; 579 var items = this.items; 580 var queries = [[$.isFunction(this.options.items) ? this.options.items.call(this.element[0], event, { item: this.currentItem }) : $(this.options.items, this.element), this]]; 581 var connectWith = this._connectWith(); 582 583 if(connectWith && this.ready) { //Shouldn't be run the first time through due to massive slow-down 584 for (var i = connectWith.length - 1; i >= 0; i--){ 585 var cur = $(connectWith[i]); 586 for (var j = cur.length - 1; j >= 0; j--){ 587 var inst = $.data(cur[j], this.widgetName); 588 if(inst && inst != this && !inst.options.disabled) { 589 queries.push([$.isFunction(inst.options.items) ? inst.options.items.call(inst.element[0], event, { item: this.currentItem }) : $(inst.options.items, inst.element), inst]); 590 this.containers.push(inst); 591 } 592 }; 593 }; 594 } 595 596 for (var i = queries.length - 1; i >= 0; i--) { 597 var targetData = queries[i][1]; 598 var _queries = queries[i][0]; 599 600 for (var j=0, queriesLength = _queries.length; j < queriesLength; j++) { 601 var item = $(_queries[j]); 602 603 item.data(this.widgetName + '-item', targetData); // Data for target checking (mouse manager) 604 605 items.push({ 606 item: item, 607 instance: targetData, 608 width: 0, height: 0, 609 left: 0, top: 0 610 }); 611 }; 612 }; 613 614 }, 615 616 refreshPositions: function(fast) { 617 618 //This has to be redone because due to the item being moved out/into the offsetParent, the offsetParent's position will change 619 if(this.offsetParent && this.helper) { 620 this.offset.parent = this._getParentOffset(); 621 } 622 623 for (var i = this.items.length - 1; i >= 0; i--){ 624 var item = this.items[i]; 625 626 //We ignore calculating positions of all connected containers when we're not over them 627 if(item.instance != this.currentContainer && this.currentContainer && item.item[0] != this.currentItem[0]) 628 continue; 629 630 var t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item; 631 632 if (!fast) { 633 item.width = t.outerWidth(); 634 item.height = t.outerHeight(); 635 } 636 637 var p = t.offset(); 638 item.left = p.left; 639 item.top = p.top; 640 }; 641 642 if(this.options.custom && this.options.custom.refreshContainers) { 643 this.options.custom.refreshContainers.call(this); 644 } else { 645 for (var i = this.containers.length - 1; i >= 0; i--){ 646 var p = this.containers[i].element.offset(); 647 this.containers[i].containerCache.left = p.left; 648 this.containers[i].containerCache.top = p.top; 649 this.containers[i].containerCache.width = this.containers[i].element.outerWidth(); 650 this.containers[i].containerCache.height = this.containers[i].element.outerHeight(); 651 }; 652 } 653 654 return this; 655 }, 656 657 _createPlaceholder: function(that) { 658 that = that || this; 659 var o = that.options; 660 661 if(!o.placeholder || o.placeholder.constructor == String) { 662 var className = o.placeholder; 663 o.placeholder = { 664 element: function() { 665 666 var el = $(document.createElement(that.currentItem[0].nodeName)) 667 .addClass(className || that.currentItem[0].className+" ui-sortable-placeholder") 668 .removeClass("ui-sortable-helper")[0]; 669 670 if(!className) 671 el.style.visibility = "hidden"; 672 673 return el; 674 }, 675 update: function(container, p) { 676 677 // 1. If a className is set as 'placeholder option, we don't force sizes - the class is responsible for that 678 // 2. The option 'forcePlaceholderSize can be enabled to force it even if a class name is specified 679 if(className && !o.forcePlaceholderSize) return; 680 681 //If the element doesn't have a actual height by itself (without styles coming from a stylesheet), it receives the inline height from the dragged item 682 if(!p.height()) { p.height(that.currentItem.innerHeight() - parseInt(that.currentItem.css('paddingTop')||0, 10) - parseInt(that.currentItem.css('paddingBottom')||0, 10)); }; 683 if(!p.width()) { p.width(that.currentItem.innerWidth() - parseInt(that.currentItem.css('paddingLeft')||0, 10) - parseInt(that.currentItem.css('paddingRight')||0, 10)); }; 684 } 685 }; 686 } 687 688 //Create the placeholder 689 that.placeholder = $(o.placeholder.element.call(that.element, that.currentItem)); 690 691 //Append it after the actual current item 692 that.currentItem.after(that.placeholder); 693 694 //Update the size of the placeholder (TODO: Logic to fuzzy, see line 316/317) 695 o.placeholder.update(that, that.placeholder); 696 697 }, 698 699 _contactContainers: function(event) { 700 701 // get innermost container that intersects with item 702 var innermostContainer = null, innermostIndex = null; 703 704 705 for (var i = this.containers.length - 1; i >= 0; i--){ 706 707 // never consider a container that's located within the item itself 708 if($.contains(this.currentItem[0], this.containers[i].element[0])) 709 continue; 710 711 if(this._intersectsWith(this.containers[i].containerCache)) { 712 713 // if we've already found a container and it's more "inner" than this, then continue 714 if(innermostContainer && $.contains(this.containers[i].element[0], innermostContainer.element[0])) 715 continue; 716 717 innermostContainer = this.containers[i]; 718 innermostIndex = i; 719 720 } else { 721 // container doesn't intersect. trigger "out" event if necessary 722 if(this.containers[i].containerCache.over) { 723 this.containers[i]._trigger("out", event, this._uiHash(this)); 724 this.containers[i].containerCache.over = 0; 725 } 726 } 727 728 } 729 730 // if no intersecting containers found, return 731 if(!innermostContainer) return; 732 733 // move the item into the container if it's not there already 734 if(this.containers.length === 1) { 735 this.containers[innermostIndex]._trigger("over", event, this._uiHash(this)); 736 this.containers[innermostIndex].containerCache.over = 1; 737 } else { 738 739 //When entering a new container, we will find the item with the least distance and append our item near it 740 var dist = 10000; var itemWithLeastDistance = null; 741 var posProperty = this.containers[innermostIndex].floating ? 'left' : 'top'; 742 var sizeProperty = this.containers[innermostIndex].floating ? 'width' : 'height'; 743 var base = this.positionAbs[posProperty] + this.offset.click[posProperty]; 744 for (var j = this.items.length - 1; j >= 0; j--) { 745 if(!$.contains(this.containers[innermostIndex].element[0], this.items[j].item[0])) continue; 746 if(this.items[j].item[0] == this.currentItem[0]) continue; 747 var cur = this.items[j].item.offset()[posProperty]; 748 var nearBottom = false; 749 if(Math.abs(cur - base) > Math.abs(cur + this.items[j][sizeProperty] - base)){ 750 nearBottom = true; 751 cur += this.items[j][sizeProperty]; 752 } 753 754 if(Math.abs(cur - base) < dist) { 755 dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j]; 756 this.direction = nearBottom ? "up": "down"; 757 } 758 } 759 760 if(!itemWithLeastDistance && !this.options.dropOnEmpty) //Check if dropOnEmpty is enabled 761 return; 762 763 this.currentContainer = this.containers[innermostIndex]; 764 itemWithLeastDistance ? this._rearrange(event, itemWithLeastDistance, null, true) : this._rearrange(event, null, this.containers[innermostIndex].element, true); 765 this._trigger("change", event, this._uiHash()); 766 this.containers[innermostIndex]._trigger("change", event, this._uiHash(this)); 767 768 //Update the placeholder 769 this.options.placeholder.update(this.currentContainer, this.placeholder); 770 771 this.containers[innermostIndex]._trigger("over", event, this._uiHash(this)); 772 this.containers[innermostIndex].containerCache.over = 1; 773 } 774 775 776 }, 777 778 _createHelper: function(event) { 779 780 var o = this.options; 781 var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event, this.currentItem])) : (o.helper == 'clone' ? this.currentItem.clone() : this.currentItem); 782 783 if(!helper.parents('body').length) //Add the helper to the DOM if that didn't happen already 784 $(o.appendTo != 'parent' ? o.appendTo : this.currentItem[0].parentNode)[0].appendChild(helper[0]); 785 786 if(helper[0] == this.currentItem[0]) 787 this._storedCSS = { width: this.currentItem[0].style.width, height: this.currentItem[0].style.height, position: this.currentItem.css("position"), top: this.currentItem.css("top"), left: this.currentItem.css("left") }; 788 789 if(helper[0].style.width == '' || o.forceHelperSize) helper.width(this.currentItem.width()); 790 if(helper[0].style.height == '' || o.forceHelperSize) helper.height(this.currentItem.height()); 791 792 return helper; 793 794 }, 795 796 _adjustOffsetFromHelper: function(obj) { 797 if (typeof obj == 'string') { 798 obj = obj.split(' '); 799 } 800 if ($.isArray(obj)) { 801 obj = {left: +obj[0], top: +obj[1] || 0}; 802 } 803 if ('left' in obj) { 804 this.offset.click.left = obj.left + this.margins.left; 805 } 806 if ('right' in obj) { 807 this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left; 808 } 809 if ('top' in obj) { 810 this.offset.click.top = obj.top + this.margins.top; 811 } 812 if ('bottom' in obj) { 813 this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top; 814 } 815 }, 816 817 _getParentOffset: function() { 818 819 820 //Get the offsetParent and cache its position 821 this.offsetParent = this.helper.offsetParent(); 822 var po = this.offsetParent.offset(); 823 824 // This is a special case where we need to modify a offset calculated on start, since the following happened: 825 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent 826 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that 827 // the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag 828 if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.contains(this.scrollParent[0], this.offsetParent[0])) { 829 po.left += this.scrollParent.scrollLeft(); 830 po.top += this.scrollParent.scrollTop(); 831 } 832 833 if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information 834 || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.ui.ie)) //Ugly IE fix 835 po = { top: 0, left: 0 }; 836 837 return { 838 top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0), 839 left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0) 840 }; 841 842 }, 843 844 _getRelativeOffset: function() { 845 846 if(this.cssPosition == "relative") { 847 var p = this.currentItem.position(); 848 return { 849 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(), 850 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft() 851 }; 852 } else { 853 return { top: 0, left: 0 }; 854 } 855 856 }, 857 858 _cacheMargins: function() { 859 this.margins = { 860 left: (parseInt(this.currentItem.css("marginLeft"),10) || 0), 861 top: (parseInt(this.currentItem.css("marginTop"),10) || 0) 862 }; 863 }, 864 865 _cacheHelperProportions: function() { 866 this.helperProportions = { 867 width: this.helper.outerWidth(), 868 height: this.helper.outerHeight() 869 }; 870 }, 871 872 _setContainment: function() { 873 874 var o = this.options; 875 if(o.containment == 'parent') o.containment = this.helper[0].parentNode; 876 if(o.containment == 'document' || o.containment == 'window') this.containment = [ 877 0 - this.offset.relative.left - this.offset.parent.left, 878 0 - this.offset.relative.top - this.offset.parent.top, 879 $(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left, 880 ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top 881 ]; 882 883 if(!(/^(document|window|parent)$/).test(o.containment)) { 884 var ce = $(o.containment)[0]; 885 var co = $(o.containment).offset(); 886 var over = ($(ce).css("overflow") != 'hidden'); 887 888 this.containment = [ 889 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left, 890 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top, 891 co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - (parseInt($(ce).css("paddingRight"),10) || 0) - this.helperProportions.width - this.margins.left, 892 co.top+(over ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - (parseInt($(ce).css("paddingBottom"),10) || 0) - this.helperProportions.height - this.margins.top 893 ]; 894 } 895 896 }, 897 898 _convertPositionTo: function(d, pos) { 899 900 if(!pos) pos = this.position; 901 var mod = d == "absolute" ? 1 : -1; 902 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); 903 904 return { 905 top: ( 906 pos.top // The absolute mouse position 907 + this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent 908 + this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border) 909 - ( ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod) 910 ), 911 left: ( 912 pos.left // The absolute mouse position 913 + this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent 914 + this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border) 915 - ( ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod) 916 ) 917 }; 918 919 }, 920 921 _generatePosition: function(event) { 922 923 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); 924 925 // This is another very weird special case that only happens for relative elements: 926 // 1. If the css position is relative 927 // 2. and the scroll parent is the document or similar to the offset parent 928 // we have to refresh the relative offset during the scroll so there are no jumps 929 if(this.cssPosition == 'relative' && !(this.scrollParent[0] != document && this.scrollParent[0] != this.offsetParent[0])) { 930 this.offset.relative = this._getRelativeOffset(); 931 } 932 933 var pageX = event.pageX; 934 var pageY = event.pageY; 935 936 /* 937 * - Position constraining - 938 * Constrain the position to a mix of grid, containment. 939 */ 940 941 if(this.originalPosition) { //If we are not dragging yet, we won't check for options 942 943 if(this.containment) { 944 if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left; 945 if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top; 946 if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left; 947 if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top; 948 } 949 950 if(o.grid) { 951 var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1]; 952 pageY = this.containment ? (!(top - this.offset.click.top < this.containment[1] || top - this.offset.click.top > this.containment[3]) ? top : (!(top - this.offset.click.top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top; 953 954 var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0]; 955 pageX = this.containment ? (!(left - this.offset.click.left < this.containment[0] || left - this.offset.click.left > this.containment[2]) ? left : (!(left - this.offset.click.left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left; 956 } 957 958 } 959 960 return { 961 top: ( 962 pageY // The absolute mouse position 963 - this.offset.click.top // Click offset (relative to the element) 964 - this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent 965 - this.offset.parent.top // The offsetParent's offset without borders (offset + border) 966 + ( ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) )) 967 ), 968 left: ( 969 pageX // The absolute mouse position 970 - this.offset.click.left // Click offset (relative to the element) 971 - this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent 972 - this.offset.parent.left // The offsetParent's offset without borders (offset + border) 973 + ( ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() )) 974 ) 975 }; 976 977 }, 978 979 _rearrange: function(event, i, a, hardRefresh) { 980 981 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)); 982 983 //Various things done here to improve the performance: 984 // 1. we create a setTimeout, that calls refreshPositions 985 // 2. on the instance, we have a counter variable, that get's higher after every append 986 // 3. on the local scope, we copy the counter variable, and check in the timeout, if it's still the same 987 // 4. this lets only the last addition to the timeout stack through 988 this.counter = this.counter ? ++this.counter : 1; 989 var counter = this.counter; 990 991 this._delay(function() { 992 if(counter == this.counter) this.refreshPositions(!hardRefresh); //Precompute after each DOM insertion, NOT on mousemove 993 }); 994 995 }, 996 997 _clear: function(event, noPropagation) { 998 999 this.reverting = false; 1000 // We delay all events that have to be triggered to after the point where the placeholder has been removed and 1001 // everything else normalized again 1002 var delayedTriggers = []; 1003 1004 // We first have to update the dom position of the actual currentItem 1005 // Note: don't do it if the current item is already removed (by a user), or it gets reappended (see #4088) 1006 if(!this._noFinalSort && this.currentItem.parent().length) this.placeholder.before(this.currentItem); 1007 this._noFinalSort = null; 1008 1009 if(this.helper[0] == this.currentItem[0]) { 1010 for(var i in this._storedCSS) { 1011 if(this._storedCSS[i] == 'auto' || this._storedCSS[i] == 'static') this._storedCSS[i] = ''; 1012 } 1013 this.currentItem.css(this._storedCSS).removeClass("ui-sortable-helper"); 1014 } else { 1015 this.currentItem.show(); 1016 } 1017 1018 if(this.fromOutside && !noPropagation) delayedTriggers.push(function(event) { this._trigger("receive", event, this._uiHash(this.fromOutside)); }); 1019 if((this.fromOutside || this.domPosition.prev != this.currentItem.prev().not(".ui-sortable-helper")[0] || this.domPosition.parent != this.currentItem.parent()[0]) && !noPropagation) delayedTriggers.push(function(event) { this._trigger("update", event, this._uiHash()); }); //Trigger update callback if the DOM position has changed 1020 1021 // Check if the items Container has Changed and trigger appropriate 1022 // events. 1023 if (this !== this.currentContainer) { 1024 if(!noPropagation) { 1025 delayedTriggers.push(function(event) { this._trigger("remove", event, this._uiHash()); }); 1026 delayedTriggers.push((function(c) { return function(event) { c._trigger("receive", event, this._uiHash(this)); }; }).call(this, this.currentContainer)); 1027 delayedTriggers.push((function(c) { return function(event) { c._trigger("update", event, this._uiHash(this)); }; }).call(this, this.currentContainer)); 1028 } 1029 } 1030 1031 1032 //Post events to containers 1033 for (var i = this.containers.length - 1; i >= 0; i--){ 1034 if(!noPropagation) delayedTriggers.push((function(c) { return function(event) { c._trigger("deactivate", event, this._uiHash(this)); }; }).call(this, this.containers[i])); 1035 if(this.containers[i].containerCache.over) { 1036 delayedTriggers.push((function(c) { return function(event) { c._trigger("out", event, this._uiHash(this)); }; }).call(this, this.containers[i])); 1037 this.containers[i].containerCache.over = 0; 1038 } 1039 } 1040 1041 //Do what was originally in plugins 1042 if(this._storedCursor) $('body').css("cursor", this._storedCursor); //Reset cursor 1043 if(this._storedOpacity) this.helper.css("opacity", this._storedOpacity); //Reset opacity 1044 if(this._storedZIndex) this.helper.css("zIndex", this._storedZIndex == 'auto' ? '' : this._storedZIndex); //Reset z-index 1045 1046 this.dragging = false; 1047 if(this.cancelHelperRemoval) { 1048 if(!noPropagation) { 1049 this._trigger("beforeStop", event, this._uiHash()); 1050 for (var i=0; i < delayedTriggers.length; i++) { delayedTriggers[i].call(this, event); }; //Trigger all delayed events 1051 this._trigger("stop", event, this._uiHash()); 1052 } 1053 1054 this.fromOutside = false; 1055 return false; 1056 } 1057 1058 if(!noPropagation) this._trigger("beforeStop", event, this._uiHash()); 1059 1060 //$(this.placeholder[0]).remove(); would have been the jQuery way - unfortunately, it unbinds ALL events from the original node! 1061 this.placeholder[0].parentNode.removeChild(this.placeholder[0]); 1062 1063 if(this.helper[0] != this.currentItem[0]) this.helper.remove(); this.helper = null; 1064 1065 if(!noPropagation) { 1066 for (var i=0; i < delayedTriggers.length; i++) { delayedTriggers[i].call(this, event); }; //Trigger all delayed events 1067 this._trigger("stop", event, this._uiHash()); 1068 } 1069 1070 this.fromOutside = false; 1071 return true; 1072 1073 }, 1074 1075 _trigger: function() { 1076 if ($.Widget.prototype._trigger.apply(this, arguments) === false) { 1077 this.cancel(); 1078 } 1079 }, 1080 1081 _uiHash: function(_inst) { 1082 var inst = _inst || this; 1083 return { 1084 helper: inst.helper, 1085 placeholder: inst.placeholder || $([]), 1086 position: inst.position, 1087 originalPosition: inst.originalPosition, 1088 offset: inst.positionAbs, 1089 item: inst.currentItem, 1090 sender: _inst ? _inst.element : null 1091 }; 1092 } 1093 1094 }); 1095 1096 })(jQuery);
title
Description
Body
title
Description
Body
title
Description
Body
title
Body
| Generated: Fri Nov 28 14:03:12 2014 | Cross-referenced by PHPXref 0.7.1 |