"
Team:TU Delft/files/jquery.ui.draggable.js
From 2010.igem.org
/*
* jQuery UI Draggable 1.8.4 * * Copyright 2010, AUTHORS.txt (http://jqueryui.com/about) * Dual licensed under the MIT or GPL Version 2 licenses. * http://jquery.org/license * * http://docs.jquery.com/UI/Draggables * * Depends: * jquery.ui.core.js * jquery.ui.mouse.js * jquery.ui.widget.js */
(function( $, undefined ) {
$.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: "1.8.4" });
$.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() {
$('').css({ width: this.offsetWidth+"px", height: this.offsetHeight+"px", position: "absolute", opacity: "0.001", zIndex: 1000 }) .css($(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);
