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1 /* 2 * jQuery UI Draggable 1.7.2 3 * 4 * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.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/Draggables 9 * 10 * Depends: 11 * ui.core.js 12 */ 13 (function($) { 14 15 $.widget("ui.draggable", $.extend({}, $.ui.mouse, { 16 17 _init: function() { 18 19 if (this.options.helper == 'original' && !(/^(?:r|a|f)/).test(this.element.css("position"))) 20 this.element[0].style.position = 'relative'; 21 22 (this.options.addClasses && this.element.addClass("ui-draggable")); 23 (this.options.disabled && this.element.addClass("ui-draggable-disabled")); 24 25 this._mouseInit(); 26 27 }, 28 29 destroy: function() { 30 if(!this.element.data('draggable')) return; 31 this.element 32 .removeData("draggable") 33 .unbind(".draggable") 34 .removeClass("ui-draggable" 35 + " ui-draggable-dragging" 36 + " ui-draggable-disabled"); 37 this._mouseDestroy(); 38 }, 39 40 _mouseCapture: function(event) { 41 42 var o = this.options; 43 44 if (this.helper || o.disabled || $(event.target).is('.ui-resizable-handle')) 45 return false; 46 47 //Quit if we're not on a valid handle 48 this.handle = this._getHandle(event); 49 if (!this.handle) 50 return false; 51 52 return true; 53 54 }, 55 56 _mouseStart: function(event) { 57 58 var o = this.options; 59 60 //Create and append the visible helper 61 this.helper = this._createHelper(event); 62 63 //Cache the helper size 64 this._cacheHelperProportions(); 65 66 //If ddmanager is used for droppables, set the global draggable 67 if($.ui.ddmanager) 68 $.ui.ddmanager.current = this; 69 70 /* 71 * - Position generation - 72 * This block generates everything position related - it's the core of draggables. 73 */ 74 75 //Cache the margins of the original element 76 this._cacheMargins(); 77 78 //Store the helper's css position 79 this.cssPosition = this.helper.css("position"); 80 this.scrollParent = this.helper.scrollParent(); 81 82 //The element's absolute position on the page minus margins 83 this.offset = this.element.offset(); 84 this.offset = { 85 top: this.offset.top - this.margins.top, 86 left: this.offset.left - this.margins.left 87 }; 88 89 $.extend(this.offset, { 90 click: { //Where the click happened, relative to the element 91 left: event.pageX - this.offset.left, 92 top: event.pageY - this.offset.top 93 }, 94 parent: this._getParentOffset(), 95 relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper 96 }); 97 98 //Generate the original position 99 this.originalPosition = this._generatePosition(event); 100 this.originalPageX = event.pageX; 101 this.originalPageY = event.pageY; 102 103 //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied 104 if(o.cursorAt) 105 this._adjustOffsetFromHelper(o.cursorAt); 106 107 //Set a containment if given in the options 108 if(o.containment) 109 this._setContainment(); 110 111 //Call plugins and callbacks 112 this._trigger("start", event); 113 114 //Recache the helper size 115 this._cacheHelperProportions(); 116 117 //Prepare the droppable offsets 118 if ($.ui.ddmanager && !o.dropBehaviour) 119 $.ui.ddmanager.prepareOffsets(this, event); 120 121 this.helper.addClass("ui-draggable-dragging"); 122 this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position 123 return true; 124 }, 125 126 _mouseDrag: function(event, noPropagation) { 127 128 //Compute the helpers position 129 this.position = this._generatePosition(event); 130 this.positionAbs = this._convertPositionTo("absolute"); 131 132 //Call plugins and callbacks and use the resulting position if something is returned 133 if (!noPropagation) { 134 var ui = this._uiHash(); 135 this._trigger('drag', event, ui); 136 this.position = ui.position; 137 } 138 139 if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px'; 140 if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px'; 141 if($.ui.ddmanager) $.ui.ddmanager.drag(this, event); 142 143 return false; 144 }, 145 146 _mouseStop: function(event) { 147 148 //If we are using droppables, inform the manager about the drop 149 var dropped = false; 150 if ($.ui.ddmanager && !this.options.dropBehaviour) 151 dropped = $.ui.ddmanager.drop(this, event); 152 153 //if a drop comes from outside (a sortable) 154 if(this.dropped) { 155 dropped = this.dropped; 156 this.dropped = false; 157 } 158 159 if((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) { 160 var self = this; 161 $(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() { 162 self._trigger("stop", event); 163 self._clear(); 164 }); 165 } else { 166 this._trigger("stop", event); 167 this._clear(); 168 } 169 170 return false; 171 }, 172 173 _getHandle: function(event) { 174 175 var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false; 176 $(this.options.handle, this.element) 177 .find("*") 178 .andSelf() 179 .each(function() { 180 if(this == event.target) handle = true; 181 }); 182 183 return handle; 184 185 }, 186 187 _createHelper: function(event) { 188 189 var o = this.options; 190 var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper == 'clone' ? this.element.clone() : this.element); 191 192 if(!helper.parents('body').length) 193 helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo)); 194 195 if(helper[0] != this.element[0] && !(/(fixed|absolute)/).test(helper.css("position"))) 196 helper.css("position", "absolute"); 197 198 return helper; 199 200 }, 201 202 _adjustOffsetFromHelper: function(obj) { 203 if(obj.left != undefined) this.offset.click.left = obj.left + this.margins.left; 204 if(obj.right != undefined) this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left; 205 if(obj.top != undefined) this.offset.click.top = obj.top + this.margins.top; 206 if(obj.bottom != undefined) this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top; 207 }, 208 209 _getParentOffset: function() { 210 211 //Get the offsetParent and cache its position 212 this.offsetParent = this.helper.offsetParent(); 213 var po = this.offsetParent.offset(); 214 215 // This is a special case where we need to modify a offset calculated on start, since the following happened: 216 // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent 217 // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that 218 // the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag 219 if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) { 220 po.left += this.scrollParent.scrollLeft(); 221 po.top += this.scrollParent.scrollTop(); 222 } 223 224 if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information 225 || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix 226 po = { top: 0, left: 0 }; 227 228 return { 229 top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0), 230 left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0) 231 }; 232 233 }, 234 235 _getRelativeOffset: function() { 236 237 if(this.cssPosition == "relative") { 238 var p = this.element.position(); 239 return { 240 top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(), 241 left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft() 242 }; 243 } else { 244 return { top: 0, left: 0 }; 245 } 246 247 }, 248 249 _cacheMargins: function() { 250 this.margins = { 251 left: (parseInt(this.element.css("marginLeft"),10) || 0), 252 top: (parseInt(this.element.css("marginTop"),10) || 0) 253 }; 254 }, 255 256 _cacheHelperProportions: function() { 257 this.helperProportions = { 258 width: this.helper.outerWidth(), 259 height: this.helper.outerHeight() 260 }; 261 }, 262 263 _setContainment: function() { 264 265 var o = this.options; 266 if(o.containment == 'parent') o.containment = this.helper[0].parentNode; 267 if(o.containment == 'document' || o.containment == 'window') this.containment = [ 268 0 - this.offset.relative.left - this.offset.parent.left, 269 0 - this.offset.relative.top - this.offset.parent.top, 270 $(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left, 271 ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top 272 ]; 273 274 if(!(/^(document|window|parent)$/).test(o.containment) && o.containment.constructor != Array) { 275 var ce = $(o.containment)[0]; if(!ce) return; 276 var co = $(o.containment).offset(); 277 var over = ($(ce).css("overflow") != 'hidden'); 278 279 this.containment = [ 280 co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left, 281 co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top, 282 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, 283 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 284 ]; 285 } else if(o.containment.constructor == Array) { 286 this.containment = o.containment; 287 } 288 289 }, 290 291 _convertPositionTo: function(d, pos) { 292 293 if(!pos) pos = this.position; 294 var mod = d == "absolute" ? 1 : -1; 295 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); 296 297 return { 298 top: ( 299 pos.top // The absolute mouse position 300 + this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent 301 + this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border) 302 - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod) 303 ), 304 left: ( 305 pos.left // The absolute mouse position 306 + this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent 307 + this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border) 308 - ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod) 309 ) 310 }; 311 312 }, 313 314 _generatePosition: function(event) { 315 316 var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); 317 318 // This is another very weird special case that only happens for relative elements: 319 // 1. If the css position is relative 320 // 2. and the scroll parent is the document or similar to the offset parent 321 // we have to refresh the relative offset during the scroll so there are no jumps 322 if(this.cssPosition == 'relative' && !(this.scrollParent[0] != document && this.scrollParent[0] != this.offsetParent[0])) { 323 this.offset.relative = this._getRelativeOffset(); 324 } 325 326 var pageX = event.pageX; 327 var pageY = event.pageY; 328 329 /* 330 * - Position constraining - 331 * Constrain the position to a mix of grid, containment. 332 */ 333 334 if(this.originalPosition) { //If we are not dragging yet, we won't check for options 335 336 if(this.containment) { 337 if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left; 338 if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top; 339 if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left; 340 if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top; 341 } 342 343 if(o.grid) { 344 var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1]; 345 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; 346 347 var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0]; 348 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; 349 } 350 351 } 352 353 return { 354 top: ( 355 pageY // The absolute mouse position 356 - this.offset.click.top // Click offset (relative to the element) 357 - this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent 358 - this.offset.parent.top // The offsetParent's offset without borders (offset + border) 359 + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) )) 360 ), 361 left: ( 362 pageX // The absolute mouse position 363 - this.offset.click.left // Click offset (relative to the element) 364 - this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent 365 - this.offset.parent.left // The offsetParent's offset without borders (offset + border) 366 + ($.browser.safari && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() )) 367 ) 368 }; 369 370 }, 371 372 _clear: function() { 373 this.helper.removeClass("ui-draggable-dragging"); 374 if(this.helper[0] != this.element[0] && !this.cancelHelperRemoval) this.helper.remove(); 375 //if($.ui.ddmanager) $.ui.ddmanager.current = null; 376 this.helper = null; 377 this.cancelHelperRemoval = false; 378 }, 379 380 // From now on bulk stuff - mainly helpers 381 382 _trigger: function(type, event, ui) { 383 ui = ui || this._uiHash(); 384 $.ui.plugin.call(this, type, [event, ui]); 385 if(type == "drag") this.positionAbs = this._convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins 386 return $.widget.prototype._trigger.call(this, type, event, ui); 387 }, 388 389 plugins: {}, 390 391 _uiHash: function(event) { 392 return { 393 helper: this.helper, 394 position: this.position, 395 absolutePosition: this.positionAbs, //deprecated 396 offset: this.positionAbs 397 }; 398 } 399 400 })); 401 402 $.extend($.ui.draggable, { 403 version: "1.7.2", 404 eventPrefix: "drag", 405 defaults: { 406 addClasses: true, 407 appendTo: "parent", 408 axis: false, 409 cancel: ":input,option", 410 connectToSortable: false, 411 containment: false, 412 cursor: "auto", 413 cursorAt: false, 414 delay: 0, 415 distance: 1, 416 grid: false, 417 handle: false, 418 helper: "original", 419 iframeFix: false, 420 opacity: false, 421 refreshPositions: false, 422 revert: false, 423 revertDuration: 500, 424 scope: "default", 425 scroll: true, 426 scrollSensitivity: 20, 427 scrollSpeed: 20, 428 snap: false, 429 snapMode: "both", 430 snapTolerance: 20, 431 stack: false, 432 zIndex: false 433 } 434 }); 435 436 $.ui.plugin.add("draggable", "connectToSortable", { 437 start: function(event, ui) { 438 439 var inst = $(this).data("draggable"), o = inst.options, 440 uiSortable = $.extend({}, ui, { item: inst.element }); 441 inst.sortables = []; 442 $(o.connectToSortable).each(function() { 443 var sortable = $.data(this, 'sortable'); 444 if (sortable && !sortable.options.disabled) { 445 inst.sortables.push({ 446 instance: sortable, 447 shouldRevert: sortable.options.revert 448 }); 449 sortable._refreshItems(); //Do a one-time refresh at start to refresh the containerCache 450 sortable._trigger("activate", event, uiSortable); 451 } 452 }); 453 454 }, 455 stop: function(event, ui) { 456 457 //If we are still over the sortable, we fake the stop event of the sortable, but also remove helper 458 var inst = $(this).data("draggable"), 459 uiSortable = $.extend({}, ui, { item: inst.element }); 460 461 $.each(inst.sortables, function() { 462 if(this.instance.isOver) { 463 464 this.instance.isOver = 0; 465 466 inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance 467 this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work) 468 469 //The sortable revert is supported, and we have to set a temporary dropped variable on the draggable to support revert: 'valid/invalid' 470 if(this.shouldRevert) this.instance.options.revert = true; 471 472 //Trigger the stop of the sortable 473 this.instance._mouseStop(event); 474 475 this.instance.options.helper = this.instance.options._helper; 476 477 //If the helper has been the original item, restore properties in the sortable 478 if(inst.options.helper == 'original') 479 this.instance.currentItem.css({ top: 'auto', left: 'auto' }); 480 481 } else { 482 this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance 483 this.instance._trigger("deactivate", event, uiSortable); 484 } 485 486 }); 487 488 }, 489 drag: function(event, ui) { 490 491 var inst = $(this).data("draggable"), self = this; 492 493 var checkPos = function(o) { 494 var dyClick = this.offset.click.top, dxClick = this.offset.click.left; 495 var helperTop = this.positionAbs.top, helperLeft = this.positionAbs.left; 496 var itemHeight = o.height, itemWidth = o.width; 497 var itemTop = o.top, itemLeft = o.left; 498 499 return $.ui.isOver(helperTop + dyClick, helperLeft + dxClick, itemTop, itemLeft, itemHeight, itemWidth); 500 }; 501 502 $.each(inst.sortables, function(i) { 503 504 //Copy over some variables to allow calling the sortable's native _intersectsWith 505 this.instance.positionAbs = inst.positionAbs; 506 this.instance.helperProportions = inst.helperProportions; 507 this.instance.offset.click = inst.offset.click; 508 509 if(this.instance._intersectsWith(this.instance.containerCache)) { 510 511 //If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once 512 if(!this.instance.isOver) { 513 514 this.instance.isOver = 1; 515 //Now we fake the start of dragging for the sortable instance, 516 //by cloning the list group item, appending it to the sortable and using it as inst.currentItem 517 //We can then fire the start event of the sortable with our passed browser event, and our own helper (so it doesn't create a new one) 518 this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true); 519 this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it 520 this.instance.options.helper = function() { return ui.helper[0]; }; 521 522 event.target = this.instance.currentItem[0]; 523 this.instance._mouseCapture(event, true); 524 this.instance._mouseStart(event, true, true); 525 526 //Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes 527 this.instance.offset.click.top = inst.offset.click.top; 528 this.instance.offset.click.left = inst.offset.click.left; 529 this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left; 530 this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top; 531 532 inst._trigger("toSortable", event); 533 inst.dropped = this.instance.element; //draggable revert needs that 534 //hack so receive/update callbacks work (mostly) 535 inst.currentItem = inst.element; 536 this.instance.fromOutside = inst; 537 538 } 539 540 //Provided we did all the previous steps, we can fire the drag event of the sortable on every draggable drag, when it intersects with the sortable 541 if(this.instance.currentItem) this.instance._mouseDrag(event); 542 543 } else { 544 545 //If it doesn't intersect with the sortable, and it intersected before, 546 //we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval 547 if(this.instance.isOver) { 548 549 this.instance.isOver = 0; 550 this.instance.cancelHelperRemoval = true; 551 552 //Prevent reverting on this forced stop 553 this.instance.options.revert = false; 554 555 // The out event needs to be triggered independently 556 this.instance._trigger('out', event, this.instance._uiHash(this.instance)); 557 558 this.instance._mouseStop(event, true); 559 this.instance.options.helper = this.instance.options._helper; 560 561 //Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size 562 this.instance.currentItem.remove(); 563 if(this.instance.placeholder) this.instance.placeholder.remove(); 564 565 inst._trigger("fromSortable", event); 566 inst.dropped = false; //draggable revert needs that 567 } 568 569 }; 570 571 }); 572 573 } 574 }); 575 576 $.ui.plugin.add("draggable", "cursor", { 577 start: function(event, ui) { 578 var t = $('body'), o = $(this).data('draggable').options; 579 if (t.css("cursor")) o._cursor = t.css("cursor"); 580 t.css("cursor", o.cursor); 581 }, 582 stop: function(event, ui) { 583 var o = $(this).data('draggable').options; 584 if (o._cursor) $('body').css("cursor", o._cursor); 585 } 586 }); 587 588 $.ui.plugin.add("draggable", "iframeFix", { 589 start: function(event, ui) { 590 var o = $(this).data('draggable').options; 591 $(o.iframeFix === true ? "iframe" : o.iframeFix).each(function() { 592 $('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>') 593 .css({ 594 width: this.offsetWidth+"px", height: this.offsetHeight+"px", 595 position: "absolute", opacity: "0.001", zIndex: 1000 596 }) 597 .css($(this).offset()) 598 .appendTo("body"); 599 }); 600 }, 601 stop: function(event, ui) { 602 $("div.ui-draggable-iframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers 603 } 604 }); 605 606 $.ui.plugin.add("draggable", "opacity", { 607 start: function(event, ui) { 608 var t = $(ui.helper), o = $(this).data('draggable').options; 609 if(t.css("opacity")) o._opacity = t.css("opacity"); 610 t.css('opacity', o.opacity); 611 }, 612 stop: function(event, ui) { 613 var o = $(this).data('draggable').options; 614 if(o._opacity) $(ui.helper).css('opacity', o._opacity); 615 } 616 }); 617 618 $.ui.plugin.add("draggable", "scroll", { 619 start: function(event, ui) { 620 var i = $(this).data("draggable"); 621 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') i.overflowOffset = i.scrollParent.offset(); 622 }, 623 drag: function(event, ui) { 624 625 var i = $(this).data("draggable"), o = i.options, scrolled = false; 626 627 if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') { 628 629 if(!o.axis || o.axis != 'x') { 630 if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) 631 i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed; 632 else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity) 633 i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed; 634 } 635 636 if(!o.axis || o.axis != 'y') { 637 if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) 638 i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed; 639 else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity) 640 i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed; 641 } 642 643 } else { 644 645 if(!o.axis || o.axis != 'x') { 646 if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) 647 scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed); 648 else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) 649 scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed); 650 } 651 652 if(!o.axis || o.axis != 'y') { 653 if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) 654 scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed); 655 else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) 656 scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed); 657 } 658 659 } 660 661 if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) 662 $.ui.ddmanager.prepareOffsets(i, event); 663 664 } 665 }); 666 667 $.ui.plugin.add("draggable", "snap", { 668 start: function(event, ui) { 669 670 var i = $(this).data("draggable"), o = i.options; 671 i.snapElements = []; 672 673 $(o.snap.constructor != String ? ( o.snap.items || ':data(draggable)' ) : o.snap).each(function() { 674 var $t = $(this); var $o = $t.offset(); 675 if(this != i.element[0]) i.snapElements.push({ 676 item: this, 677 width: $t.outerWidth(), height: $t.outerHeight(), 678 top: $o.top, left: $o.left 679 }); 680 }); 681 682 }, 683 drag: function(event, ui) { 684 685 var inst = $(this).data("draggable"), o = inst.options; 686 var d = o.snapTolerance; 687 688 var x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width, 689 y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height; 690 691 for (var i = inst.snapElements.length - 1; i >= 0; i--){ 692 693 var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width, 694 t = inst.snapElements[i].top, b = t + inst.snapElements[i].height; 695 696 //Yes, I know, this is insane ;) 697 if(!((l-d < x1 && x1 < r+d && t-d < y1 && y1 < b+d) || (l-d < x1 && x1 < r+d && t-d < y2 && y2 < b+d) || (l-d < x2 && x2 < r+d && t-d < y1 && y1 < b+d) || (l-d < x2 && x2 < r+d && t-d < y2 && y2 < b+d))) { 698 if(inst.snapElements[i].snapping) (inst.options.snap.release && inst.options.snap.release.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item }))); 699 inst.snapElements[i].snapping = false; 700 continue; 701 } 702 703 if(o.snapMode != 'inner') { 704 var ts = Math.abs(t - y2) <= d; 705 var bs = Math.abs(b - y1) <= d; 706 var ls = Math.abs(l - x2) <= d; 707 var rs = Math.abs(r - x1) <= d; 708 if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top - inst.margins.top; 709 if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top - inst.margins.top; 710 if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left - inst.margins.left; 711 if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left - inst.margins.left; 712 } 713 714 var first = (ts || bs || ls || rs); 715 716 if(o.snapMode != 'outer') { 717 var ts = Math.abs(t - y1) <= d; 718 var bs = Math.abs(b - y2) <= d; 719 var ls = Math.abs(l - x1) <= d; 720 var rs = Math.abs(r - x2) <= d; 721 if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top - inst.margins.top; 722 if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top - inst.margins.top; 723 if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left - inst.margins.left; 724 if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left - inst.margins.left; 725 } 726 727 if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first)) 728 (inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item }))); 729 inst.snapElements[i].snapping = (ts || bs || ls || rs || first); 730 731 }; 732 733 } 734 }); 735 736 $.ui.plugin.add("draggable", "stack", { 737 start: function(event, ui) { 738 739 var o = $(this).data("draggable").options; 740 741 var group = $.makeArray($(o.stack.group)).sort(function(a,b) { 742 return (parseInt($(a).css("zIndex"),10) || o.stack.min) - (parseInt($(b).css("zIndex"),10) || o.stack.min); 743 }); 744 745 $(group).each(function(i) { 746 this.style.zIndex = o.stack.min + i; 747 }); 748 749 this[0].style.zIndex = o.stack.min + group.length; 750 751 } 752 }); 753 754 $.ui.plugin.add("draggable", "zIndex", { 755 start: function(event, ui) { 756 var t = $(ui.helper), o = $(this).data("draggable").options; 757 if(t.css("zIndex")) o._zIndex = t.css("zIndex"); 758 t.css('zIndex', o.zIndex); 759 }, 760 stop: function(event, ui) { 761 var o = $(this).data("draggable").options; 762 if(o._zIndex) $(ui.helper).css('zIndex', o._zIndex); 763 } 764 }); 765 766 })(jQuery);
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| Generated: Thu Mar 24 11:18:33 2011 | Cross-referenced by PHPXref 0.7 |