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Diffstat (limited to 'resources/jquery.ui/jquery.ui.draggable.js')
| -rw-r--r-- | resources/jquery.ui/jquery.ui.draggable.js | 797 |
1 files changed, 797 insertions, 0 deletions
diff --git a/resources/jquery.ui/jquery.ui.draggable.js b/resources/jquery.ui/jquery.ui.draggable.js new file mode 100644 index 00000000..b4c1070d --- /dev/null +++ b/resources/jquery.ui/jquery.ui.draggable.js @@ -0,0 +1,797 @@ +/* + * jQuery UI Draggable 1.8.2 + * + * Copyright (c) 2010 AUTHORS.txt (http://jqueryui.com/about) + * Dual licensed under the MIT (MIT-LICENSE.txt) + * and GPL (GPL-LICENSE.txt) licenses. + * + * http://docs.jquery.com/UI/Draggables + * + * Depends: + * jquery.ui.core.js + * jquery.ui.mouse.js + * jquery.ui.widget.js + */ +(function($) { + +$.widget("ui.draggable", $.ui.mouse, { + widgetEventPrefix: "drag", + options: { + addClasses: true, + appendTo: "parent", + axis: false, + connectToSortable: false, + containment: false, + cursor: "auto", + cursorAt: false, + grid: false, + handle: false, + helper: "original", + iframeFix: false, + opacity: false, + refreshPositions: false, + revert: false, + revertDuration: 500, + scope: "default", + scroll: true, + scrollSensitivity: 20, + scrollSpeed: 20, + snap: false, + snapMode: "both", + snapTolerance: 20, + stack: false, + zIndex: false + }, + _create: function() { + + if (this.options.helper == 'original' && !(/^(?:r|a|f)/).test(this.element.css("position"))) + this.element[0].style.position = 'relative'; + + (this.options.addClasses && this.element.addClass("ui-draggable")); + (this.options.disabled && this.element.addClass("ui-draggable-disabled")); + + this._mouseInit(); + + }, + + destroy: function() { + if(!this.element.data('draggable')) return; + this.element + .removeData("draggable") + .unbind(".draggable") + .removeClass("ui-draggable" + + " ui-draggable-dragging" + + " ui-draggable-disabled"); + this._mouseDestroy(); + + return this; + }, + + _mouseCapture: function(event) { + + var o = this.options; + + // among others, prevent a drag on a resizable-handle + if (this.helper || o.disabled || $(event.target).is('.ui-resizable-handle')) + return false; + + //Quit if we're not on a valid handle + this.handle = this._getHandle(event); + if (!this.handle) + return false; + + return true; + + }, + + _mouseStart: function(event) { + + var o = this.options; + + //Create and append the visible helper + this.helper = this._createHelper(event); + + //Cache the helper size + this._cacheHelperProportions(); + + //If ddmanager is used for droppables, set the global draggable + if($.ui.ddmanager) + $.ui.ddmanager.current = this; + + /* + * - Position generation - + * This block generates everything position related - it's the core of draggables. + */ + + //Cache the margins of the original element + this._cacheMargins(); + + //Store the helper's css position + this.cssPosition = this.helper.css("position"); + this.scrollParent = this.helper.scrollParent(); + + //The element's absolute position on the page minus margins + this.offset = this.positionAbs = this.element.offset(); + this.offset = { + top: this.offset.top - this.margins.top, + left: this.offset.left - this.margins.left + }; + + $.extend(this.offset, { + click: { //Where the click happened, relative to the element + left: event.pageX - this.offset.left, + top: event.pageY - this.offset.top + }, + parent: this._getParentOffset(), + relative: this._getRelativeOffset() //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helper + }); + + //Generate the original position + this.originalPosition = this.position = this._generatePosition(event); + this.originalPageX = event.pageX; + this.originalPageY = event.pageY; + + //Adjust the mouse offset relative to the helper if 'cursorAt' is supplied + (o.cursorAt && this._adjustOffsetFromHelper(o.cursorAt)); + + //Set a containment if given in the options + if(o.containment) + this._setContainment(); + + //Trigger event + callbacks + if(this._trigger("start", event) === false) { + this._clear(); + return false; + } + + //Recache the helper size + this._cacheHelperProportions(); + + //Prepare the droppable offsets + if ($.ui.ddmanager && !o.dropBehaviour) + $.ui.ddmanager.prepareOffsets(this, event); + + this.helper.addClass("ui-draggable-dragging"); + this._mouseDrag(event, true); //Execute the drag once - this causes the helper not to be visible before getting its correct position + return true; + }, + + _mouseDrag: function(event, noPropagation) { + + //Compute the helpers position + this.position = this._generatePosition(event); + this.positionAbs = this._convertPositionTo("absolute"); + + //Call plugins and callbacks and use the resulting position if something is returned + if (!noPropagation) { + var ui = this._uiHash(); + if(this._trigger('drag', event, ui) === false) { + this._mouseUp({}); + return false; + } + this.position = ui.position; + } + + if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px'; + if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px'; + if($.ui.ddmanager) $.ui.ddmanager.drag(this, event); + + return false; + }, + + _mouseStop: function(event) { + + //If we are using droppables, inform the manager about the drop + var dropped = false; + if ($.ui.ddmanager && !this.options.dropBehaviour) + dropped = $.ui.ddmanager.drop(this, event); + + //if a drop comes from outside (a sortable) + if(this.dropped) { + dropped = this.dropped; + this.dropped = false; + } + + //if the original element is removed, don't bother to continue + if(!this.element[0] || !this.element[0].parentNode) + return false; + + if((this.options.revert == "invalid" && !dropped) || (this.options.revert == "valid" && dropped) || this.options.revert === true || ($.isFunction(this.options.revert) && this.options.revert.call(this.element, dropped))) { + var self = this; + $(this.helper).animate(this.originalPosition, parseInt(this.options.revertDuration, 10), function() { + if(self._trigger("stop", event) !== false) { + self._clear(); + } + }); + } else { + if(this._trigger("stop", event) !== false) { + this._clear(); + } + } + + return false; + }, + + cancel: function() { + + if(this.helper.is(".ui-draggable-dragging")) { + this._mouseUp({}); + } else { + this._clear(); + } + + return this; + + }, + + _getHandle: function(event) { + + var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false; + $(this.options.handle, this.element) + .find("*") + .andSelf() + .each(function() { + if(this == event.target) handle = true; + }); + + return handle; + + }, + + _createHelper: function(event) { + + var o = this.options; + var helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [event])) : (o.helper == 'clone' ? this.element.clone() : this.element); + + if(!helper.parents('body').length) + helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo)); + + if(helper[0] != this.element[0] && !(/(fixed|absolute)/).test(helper.css("position"))) + helper.css("position", "absolute"); + + return helper; + + }, + + _adjustOffsetFromHelper: function(obj) { + if (typeof obj == 'string') { + obj = obj.split(' '); + } + if ($.isArray(obj)) { + obj = {left: +obj[0], top: +obj[1] || 0}; + } + if ('left' in obj) { + this.offset.click.left = obj.left + this.margins.left; + } + if ('right' in obj) { + this.offset.click.left = this.helperProportions.width - obj.right + this.margins.left; + } + if ('top' in obj) { + this.offset.click.top = obj.top + this.margins.top; + } + if ('bottom' in obj) { + this.offset.click.top = this.helperProportions.height - obj.bottom + this.margins.top; + } + }, + + _getParentOffset: function() { + + //Get the offsetParent and cache its position + this.offsetParent = this.helper.offsetParent(); + var po = this.offsetParent.offset(); + + // This is a special case where we need to modify a offset calculated on start, since the following happened: + // 1. The position of the helper is absolute, so it's position is calculated based on the next positioned parent + // 2. The actual offset parent is a child of the scroll parent, and the scroll parent isn't the document, which means that + // the scroll is included in the initial calculation of the offset of the parent, and never recalculated upon drag + if(this.cssPosition == 'absolute' && this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) { + po.left += this.scrollParent.scrollLeft(); + po.top += this.scrollParent.scrollTop(); + } + + if((this.offsetParent[0] == document.body) //This needs to be actually done for all browsers, since pageX/pageY includes this information + || (this.offsetParent[0].tagName && this.offsetParent[0].tagName.toLowerCase() == 'html' && $.browser.msie)) //Ugly IE fix + po = { top: 0, left: 0 }; + + return { + top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0), + left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0) + }; + + }, + + _getRelativeOffset: function() { + + if(this.cssPosition == "relative") { + var p = this.element.position(); + return { + top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.scrollParent.scrollTop(), + left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.scrollParent.scrollLeft() + }; + } else { + return { top: 0, left: 0 }; + } + + }, + + _cacheMargins: function() { + this.margins = { + left: (parseInt(this.element.css("marginLeft"),10) || 0), + top: (parseInt(this.element.css("marginTop"),10) || 0) + }; + }, + + _cacheHelperProportions: function() { + this.helperProportions = { + width: this.helper.outerWidth(), + height: this.helper.outerHeight() + }; + }, + + _setContainment: function() { + + var o = this.options; + if(o.containment == 'parent') o.containment = this.helper[0].parentNode; + if(o.containment == 'document' || o.containment == 'window') this.containment = [ + 0 - this.offset.relative.left - this.offset.parent.left, + 0 - this.offset.relative.top - this.offset.parent.top, + $(o.containment == 'document' ? document : window).width() - this.helperProportions.width - this.margins.left, + ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.helperProportions.height - this.margins.top + ]; + + if(!(/^(document|window|parent)$/).test(o.containment) && o.containment.constructor != Array) { + var ce = $(o.containment)[0]; if(!ce) return; + var co = $(o.containment).offset(); + var over = ($(ce).css("overflow") != 'hidden'); + + this.containment = [ + co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) + (parseInt($(ce).css("paddingLeft"),10) || 0) - this.margins.left, + co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) + (parseInt($(ce).css("paddingTop"),10) || 0) - this.margins.top, + 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, + 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 + ]; + } else if(o.containment.constructor == Array) { + this.containment = o.containment; + } + + }, + + _convertPositionTo: function(d, pos) { + + if(!pos) pos = this.position; + var mod = d == "absolute" ? 1 : -1; + var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); + + return { + top: ( + pos.top // The absolute mouse position + + this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent + + this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border) + - ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) ) * mod) + ), + left: ( + pos.left // The absolute mouse position + + this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent + + this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border) + - ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() ) * mod) + ) + }; + + }, + + _generatePosition: function(event) { + + var o = this.options, scroll = this.cssPosition == 'absolute' && !(this.scrollParent[0] != document && $.ui.contains(this.scrollParent[0], this.offsetParent[0])) ? this.offsetParent : this.scrollParent, scrollIsRootNode = (/(html|body)/i).test(scroll[0].tagName); + var pageX = event.pageX; + var pageY = event.pageY; + + /* + * - Position constraining - + * Constrain the position to a mix of grid, containment. + */ + + if(this.originalPosition) { //If we are not dragging yet, we won't check for options + + if(this.containment) { + if(event.pageX - this.offset.click.left < this.containment[0]) pageX = this.containment[0] + this.offset.click.left; + if(event.pageY - this.offset.click.top < this.containment[1]) pageY = this.containment[1] + this.offset.click.top; + if(event.pageX - this.offset.click.left > this.containment[2]) pageX = this.containment[2] + this.offset.click.left; + if(event.pageY - this.offset.click.top > this.containment[3]) pageY = this.containment[3] + this.offset.click.top; + } + + if(o.grid) { + var top = this.originalPageY + Math.round((pageY - this.originalPageY) / o.grid[1]) * o.grid[1]; + pageY = this.containment ? (!(top - this.offset.click.top < this.containment[1] || top - this.offset.click.top > this.containment[3]) ? top : (!(top - this.offset.click.top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top; + + var left = this.originalPageX + Math.round((pageX - this.originalPageX) / o.grid[0]) * o.grid[0]; + pageX = this.containment ? (!(left - this.offset.click.left < this.containment[0] || left - this.offset.click.left > this.containment[2]) ? left : (!(left - this.offset.click.left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left; + } + + } + + return { + top: ( + pageY // The absolute mouse position + - this.offset.click.top // Click offset (relative to the element) + - this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent + - this.offset.parent.top // The offsetParent's offset without borders (offset + border) + + ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollTop() : ( scrollIsRootNode ? 0 : scroll.scrollTop() ) )) + ), + left: ( + pageX // The absolute mouse position + - this.offset.click.left // Click offset (relative to the element) + - this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent + - this.offset.parent.left // The offsetParent's offset without borders (offset + border) + + ($.browser.safari && $.browser.version < 526 && this.cssPosition == 'fixed' ? 0 : ( this.cssPosition == 'fixed' ? -this.scrollParent.scrollLeft() : scrollIsRootNode ? 0 : scroll.scrollLeft() )) + ) + }; + + }, + + _clear: function() { + this.helper.removeClass("ui-draggable-dragging"); + if(this.helper[0] != this.element[0] && !this.cancelHelperRemoval) this.helper.remove(); + //if($.ui.ddmanager) $.ui.ddmanager.current = null; + this.helper = null; + this.cancelHelperRemoval = false; + }, + + // From now on bulk stuff - mainly helpers + + _trigger: function(type, event, ui) { + ui = ui || this._uiHash(); + $.ui.plugin.call(this, type, [event, ui]); + if(type == "drag") this.positionAbs = this._convertPositionTo("absolute"); //The absolute position has to be recalculated after plugins + return $.Widget.prototype._trigger.call(this, type, event, ui); + }, + + plugins: {}, + + _uiHash: function(event) { + return { + helper: this.helper, + position: this.position, + originalPosition: this.originalPosition, + offset: this.positionAbs + }; + } + +}); + +$.extend($.ui.draggable, { + version: "1.8.2" +}); + +$.ui.plugin.add("draggable", "connectToSortable", { + start: function(event, ui) { + + var inst = $(this).data("draggable"), o = inst.options, + uiSortable = $.extend({}, ui, { item: inst.element }); + inst.sortables = []; + $(o.connectToSortable).each(function() { + var sortable = $.data(this, 'sortable'); + if (sortable && !sortable.options.disabled) { + inst.sortables.push({ + instance: sortable, + shouldRevert: sortable.options.revert + }); + sortable._refreshItems(); //Do a one-time refresh at start to refresh the containerCache + sortable._trigger("activate", event, uiSortable); + } + }); + + }, + stop: function(event, ui) { + + //If we are still over the sortable, we fake the stop event of the sortable, but also remove helper + var inst = $(this).data("draggable"), + uiSortable = $.extend({}, ui, { item: inst.element }); + + $.each(inst.sortables, function() { + if(this.instance.isOver) { + + this.instance.isOver = 0; + + inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance + this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work) + + //The sortable revert is supported, and we have to set a temporary dropped variable on the draggable to support revert: 'valid/invalid' + if(this.shouldRevert) this.instance.options.revert = true; + + //Trigger the stop of the sortable + this.instance._mouseStop(event); + + this.instance.options.helper = this.instance.options._helper; + + //If the helper has been the original item, restore properties in the sortable + if(inst.options.helper == 'original') + this.instance.currentItem.css({ top: 'auto', left: 'auto' }); + + } else { + this.instance.cancelHelperRemoval = false; //Remove the helper in the sortable instance + this.instance._trigger("deactivate", event, uiSortable); + } + + }); + + }, + drag: function(event, ui) { + + var inst = $(this).data("draggable"), self = this; + + var checkPos = function(o) { + var dyClick = this.offset.click.top, dxClick = this.offset.click.left; + var helperTop = this.positionAbs.top, helperLeft = this.positionAbs.left; + var itemHeight = o.height, itemWidth = o.width; + var itemTop = o.top, itemLeft = o.left; + + return $.ui.isOver(helperTop + dyClick, helperLeft + dxClick, itemTop, itemLeft, itemHeight, itemWidth); + }; + + $.each(inst.sortables, function(i) { + + //Copy over some variables to allow calling the sortable's native _intersectsWith + this.instance.positionAbs = inst.positionAbs; + this.instance.helperProportions = inst.helperProportions; + this.instance.offset.click = inst.offset.click; + + if(this.instance._intersectsWith(this.instance.containerCache)) { + + //If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once + if(!this.instance.isOver) { + + this.instance.isOver = 1; + //Now we fake the start of dragging for the sortable instance, + //by cloning the list group item, appending it to the sortable and using it as inst.currentItem + //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) + this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true); + this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it + this.instance.options.helper = function() { return ui.helper[0]; }; + + event.target = this.instance.currentItem[0]; + this.instance._mouseCapture(event, true); + this.instance._mouseStart(event, true, true); + + //Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes + this.instance.offset.click.top = inst.offset.click.top; + this.instance.offset.click.left = inst.offset.click.left; + this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left; + this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top; + + inst._trigger("toSortable", event); + inst.dropped = this.instance.element; //draggable revert needs that + //hack so receive/update callbacks work (mostly) + inst.currentItem = inst.element; + this.instance.fromOutside = inst; + + } + + //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 + if(this.instance.currentItem) this.instance._mouseDrag(event); + + } else { + + //If it doesn't intersect with the sortable, and it intersected before, + //we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval + if(this.instance.isOver) { + + this.instance.isOver = 0; + this.instance.cancelHelperRemoval = true; + + //Prevent reverting on this forced stop + this.instance.options.revert = false; + + // The out event needs to be triggered independently + this.instance._trigger('out', event, this.instance._uiHash(this.instance)); + + this.instance._mouseStop(event, true); + this.instance.options.helper = this.instance.options._helper; + + //Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size + this.instance.currentItem.remove(); + if(this.instance.placeholder) this.instance.placeholder.remove(); + + inst._trigger("fromSortable", event); + inst.dropped = false; //draggable revert needs that + } + + }; + + }); + + } +}); + +$.ui.plugin.add("draggable", "cursor", { + start: function(event, ui) { + var t = $('body'), o = $(this).data('draggable').options; + if (t.css("cursor")) o._cursor = t.css("cursor"); + t.css("cursor", o.cursor); + }, + stop: function(event, ui) { + var o = $(this).data('draggable').options; + if (o._cursor) $('body').css("cursor", o._cursor); + } +}); + +$.ui.plugin.add("draggable", "iframeFix", { + start: function(event, ui) { + var o = $(this).data('draggable').options; + $(o.iframeFix === true ? "iframe" : o.iframeFix).each(function() { + $('<div class="ui-draggable-iframeFix" style="background: #fff;"></div>') + .css({ + width: this.offsetWidth+"px", height: this.offsetHeight+"px", + position: "absolute", opacity: "0.001", zIndex: 1000 + }) + .css($(this).offset()) + .appendTo("body"); + }); + }, + stop: function(event, ui) { + $("div.ui-draggable-iframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers + } +}); + +$.ui.plugin.add("draggable", "opacity", { + start: function(event, ui) { + var t = $(ui.helper), o = $(this).data('draggable').options; + if(t.css("opacity")) o._opacity = t.css("opacity"); + t.css('opacity', o.opacity); + }, + stop: function(event, ui) { + var o = $(this).data('draggable').options; + if(o._opacity) $(ui.helper).css('opacity', o._opacity); + } +}); + +$.ui.plugin.add("draggable", "scroll", { + start: function(event, ui) { + var i = $(this).data("draggable"); + if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') i.overflowOffset = i.scrollParent.offset(); + }, + drag: function(event, ui) { + + var i = $(this).data("draggable"), o = i.options, scrolled = false; + + if(i.scrollParent[0] != document && i.scrollParent[0].tagName != 'HTML') { + + if(!o.axis || o.axis != 'x') { + if((i.overflowOffset.top + i.scrollParent[0].offsetHeight) - event.pageY < o.scrollSensitivity) + i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop + o.scrollSpeed; + else if(event.pageY - i.overflowOffset.top < o.scrollSensitivity) + i.scrollParent[0].scrollTop = scrolled = i.scrollParent[0].scrollTop - o.scrollSpeed; + } + + if(!o.axis || o.axis != 'y') { + if((i.overflowOffset.left + i.scrollParent[0].offsetWidth) - event.pageX < o.scrollSensitivity) + i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft + o.scrollSpeed; + else if(event.pageX - i.overflowOffset.left < o.scrollSensitivity) + i.scrollParent[0].scrollLeft = scrolled = i.scrollParent[0].scrollLeft - o.scrollSpeed; + } + + } else { + + if(!o.axis || o.axis != 'x') { + if(event.pageY - $(document).scrollTop() < o.scrollSensitivity) + scrolled = $(document).scrollTop($(document).scrollTop() - o.scrollSpeed); + else if($(window).height() - (event.pageY - $(document).scrollTop()) < o.scrollSensitivity) + scrolled = $(document).scrollTop($(document).scrollTop() + o.scrollSpeed); + } + + if(!o.axis || o.axis != 'y') { + if(event.pageX - $(document).scrollLeft() < o.scrollSensitivity) + scrolled = $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed); + else if($(window).width() - (event.pageX - $(document).scrollLeft()) < o.scrollSensitivity) + scrolled = $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed); + } + + } + + if(scrolled !== false && $.ui.ddmanager && !o.dropBehaviour) + $.ui.ddmanager.prepareOffsets(i, event); + + } +}); + +$.ui.plugin.add("draggable", "snap", { + start: function(event, ui) { + + var i = $(this).data("draggable"), o = i.options; + i.snapElements = []; + + $(o.snap.constructor != String ? ( o.snap.items || ':data(draggable)' ) : o.snap).each(function() { + var $t = $(this); var $o = $t.offset(); + if(this != i.element[0]) i.snapElements.push({ + item: this, + width: $t.outerWidth(), height: $t.outerHeight(), + top: $o.top, left: $o.left + }); + }); + + }, + drag: function(event, ui) { + + var inst = $(this).data("draggable"), o = inst.options; + var d = o.snapTolerance; + + var x1 = ui.offset.left, x2 = x1 + inst.helperProportions.width, + y1 = ui.offset.top, y2 = y1 + inst.helperProportions.height; + + for (var i = inst.snapElements.length - 1; i >= 0; i--){ + + var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width, + t = inst.snapElements[i].top, b = t + inst.snapElements[i].height; + + //Yes, I know, this is insane ;) + 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))) { + 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 }))); + inst.snapElements[i].snapping = false; + continue; + } + + if(o.snapMode != 'inner') { + var ts = Math.abs(t - y2) <= d; + var bs = Math.abs(b - y1) <= d; + var ls = Math.abs(l - x2) <= d; + var rs = Math.abs(r - x1) <= d; + if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top - inst.margins.top; + if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b, left: 0 }).top - inst.margins.top; + if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left - inst.margins.left; + if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r }).left - inst.margins.left; + } + + var first = (ts || bs || ls || rs); + + if(o.snapMode != 'outer') { + var ts = Math.abs(t - y1) <= d; + var bs = Math.abs(b - y2) <= d; + var ls = Math.abs(l - x1) <= d; + var rs = Math.abs(r - x2) <= d; + if(ts) ui.position.top = inst._convertPositionTo("relative", { top: t, left: 0 }).top - inst.margins.top; + if(bs) ui.position.top = inst._convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top - inst.margins.top; + if(ls) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: l }).left - inst.margins.left; + if(rs) ui.position.left = inst._convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left - inst.margins.left; + } + + if(!inst.snapElements[i].snapping && (ts || bs || ls || rs || first)) + (inst.options.snap.snap && inst.options.snap.snap.call(inst.element, event, $.extend(inst._uiHash(), { snapItem: inst.snapElements[i].item }))); + inst.snapElements[i].snapping = (ts || bs || ls || rs || first); + + }; + + } +}); + +$.ui.plugin.add("draggable", "stack", { + start: function(event, ui) { + + var o = $(this).data("draggable").options; + + var group = $.makeArray($(o.stack)).sort(function(a,b) { + return (parseInt($(a).css("zIndex"),10) || 0) - (parseInt($(b).css("zIndex"),10) || 0); + }); + if (!group.length) { return; } + + var min = parseInt(group[0].style.zIndex) || 0; + $(group).each(function(i) { + this.style.zIndex = min + i; + }); + + this[0].style.zIndex = min + group.length; + + } +}); + +$.ui.plugin.add("draggable", "zIndex", { + start: function(event, ui) { + var t = $(ui.helper), o = $(this).data("draggable").options; + if(t.css("zIndex")) o._zIndex = t.css("zIndex"); + t.css('zIndex', o.zIndex); + }, + stop: function(event, ui) { + var o = $(this).data("draggable").options; + if(o._zIndex) $(ui.helper).css('zIndex', o._zIndex); + } +}); + +})(jQuery); |