+
−/*
+
− * jQuery UI Sortable
+
− *
+
− * Copyright (c) 2008 Paul Bakaus
+
− * Dual licensed under the MIT (MIT-LICENSE.txt)
+
− * and GPL (GPL-LICENSE.txt) licenses.
+
− *
+
− * http://docs.jquery.com/UI/Sortables
+
− *
+
− * Depends:
+
− *   ui.base.js
+
− *
+
− * Revision: $Id: ui.sortable.js 5262 2008-04-17 13:13:51Z paul.bakaus $
+
− */
+
−;(function($) {
+
−
+
−	if (window.Node && Node.prototype && !Node.prototype.contains) {
+
−		Node.prototype.contains = function (arg) {
+
−			return !!(this.compareDocumentPosition(arg) & 16);
+
−		};
+
−	}
+
−
+
−
+
−	$.widget("ui.sortableTree", $.extend($.ui.mouse, {
+
−		init: function() {
+
−
+
−			//Initialize needed constants
+
−			var self = this, o = this.options;
+
−			this.containerCache = {};
+
−			this.element.addClass("ui-sortableTree");
+
−
+
−			//Get the items
+
−			this.refresh();
+
−
+
−			//Let's determine the parent's offset
+
−			if(!(/(relative|absolute|fixed)/).test(this.element.css('position'))) this.element.css('position', 'relative');
+
−			this.offset = this.element.offset();
+
−
+
−			//Initialize mouse events for interaction
+
−			this.mouseInit();
+
−
+
−			//Prepare cursorAt
+
−			if(o.cursorAt && o.cursorAt.constructor == Array)
+
−				o.cursorAt = { left: o.cursorAt[0], top: o.cursorAt[1] };
+
−
+
−		},
+
−		plugins: {},
+
−		ui: function(inst) {
+
−			return {
+
−				helper: (inst || this)["helper"],
+
−				position: (inst || this)["position"].current,
+
−				absolutePosition: (inst || this)["position"].absolute,
+
−				instance: this,
+
−				options: this.options,
+
−				element: this.element,
+
−				item: (inst || this)["currentItem"],
+
−				sender: inst ? inst.element : null
+
−			};
+
−		},
+
−		propagate: function(n,e,inst) {
+
−			$.ui.plugin.call(this, n, [e, this.ui(inst)]);
+
−			this.element.triggerHandler(n == "sort" ? n : "sort"+n, [e, this.ui(inst)], this.options[n]);
+
−		},
+
−		serialize: function(o) {
+
−
+
−			var items = $(this.options.items, this.element).not('.ui-sortableTree-helper'); //Only the items of the sortable itself
+
−			var str = []; o = o || {};
+
−
+
−			items.each(function() {
+
−				var res = ($(this).attr(o.attribute || 'id') || '').match(o.expression || (/(.+)[-=_](.+)/));
+
−				if(res) str.push((o.key || res[1])+'[]='+(o.key ? res[1] : res[2]));
+
−			});
+
−
+
−			return str.join('&');
+
−
+
−		},
+
−		toArray: function(attr) {
+
−			var items = $(this.options.items, this.element).not('.ui-sortableTree-helper'); //Only the items of the sortable itself
+
−			var ret = [];
+
−
+
−			items.each(function() { ret.push($(this).attr(attr || 'id')); });
+
−			return ret;
+
−		},
+
−		enable: function() {
+
−			this.element.removeClass("ui-sortableTree-disabled");
+
−			this.options.disabled = false;
+
−		},
+
−		disable: function() {
+
−			this.element.addClass("ui-sortableTree-disabled");
+
−			this.options.disabled = true;
+
−		},
+
−		/* Be careful with the following core functions */
+
−		intersectsWith: function(item) {
+
−
+
−			var x1 = this.position.absolute.left - 10, x2 = x1 + 10,
+
−			    y1 = this.position.absolute.top - 10, y2 = y1 + 10;
+
−			var l = item.left, r = l + item.width,
+
−			    t = item.top,  b = t + item.height;
+
−
+
−			return (   l < x1 + (this.helperProportions.width  / 2)    // Right Half
+
−				&&     x2 - (this.helperProportions.width  / 2) < r    // Left Half
+
−				&& t < y1 + (this.helperProportions.height / 2)        // Bottom Half
+
−				&&     y2 - (this.helperProportions.height / 2) < b ); // Top Half
+
−
+
−		},
+
−		intersectsWithEdge: function(item) {
+
−			var y1 = this.position.absolute.top - 10, y2 = y1 + 10;
+
−			var t = item.top,  b = t + item.height;
+
−
+
−			if(!this.intersectsWith(item.item.parents(".ui-sortableTree").data("sortableTree").containerCache)) return false;
+
−
+
−			if (!( t < y1 + (this.helperProportions.height / 2)        // Bottom Half
+
−				&&     y2 - (this.helperProportions.height / 2) < b )) return false; // Top Half
+
−
+
−			if(y2 > t && y1 < t) return 1; //Crosses top edge
+
−			if(y1 < b && y2 > b) return 2; //Crosses bottom edge
+
−
+
−			return false;
+
−
+
−		},
+
−		refresh: function() {
+
−			this.refreshItems();
+
−			this.refreshPositions();
+
−		},
+
−		refreshItems: function() {
+
−
+
−			this.items = [];
+
−			this.containers = [this];
+
−			var items = this.items;
+
−			var queries = [$(this.options.items, this.element)];
+
−
+
−			if(this.options.connectWith) {
+
−				for (var i = this.options.connectWith.length - 1; i >= 0; i--){
+
−					var cur = $(this.options.connectWith[i]);
+
−					for (var j = cur.length - 1; j >= 0; j--){
+
−						var inst = $.data(cur[j], 'sortableTree');
+
−						if(inst && !inst.options.disabled) {
+
−							queries.push($(inst.options.items, inst.element));
+
−							this.containers.push(inst);
+
−						}
+
−					};
+
−				};
+
−			}
+
−
+
−			for (var i = queries.length - 1; i >= 0; i--){
+
−				queries[i].each(function() {
+
−					$.data(this, 'sortableTree-item', true); // Data for target checking (mouse manager)
+
−					items.push({
+
−						item: $(this),
+
−						width: 0, height: 0,
+
−						left: 0, top: 0
+
−					});
+
−				});
+
−			};
+
−
+
−		},
+
−		refreshPositions: function(fast) {
+
−			for (var i = this.items.length - 1; i >= 0; i--){
+
−				if(!fast) this.items[i].height 			= this.items[i].item.outerHeight();
+
−				this.items[i].top 						= this.items[i].item.offset().top;
+
−			};
+
−			for (var i = this.containers.length - 1; i >= 0; i--){
+
−				var p =this.containers[i].element.offset();
+
−				this.containers[i].containerCache.left 	= p.left;
+
−				this.containers[i].containerCache.top 	= p.top;
+
−				this.containers[i].containerCache.width	= this.containers[i].element.outerWidth();
+
−				this.containers[i].containerCache.height= this.containers[i].element.outerHeight();
+
−			};
+
−		},
+
−		destroy: function() {
+
−
+
−			this.element
+
−				.removeClass("ui-sortableTree ui-sortableTree-disabled")
+
−				.removeData("sortableTree")
+
−				.unbind(".sortableTree");
+
−			this.mouseDestroy();
+
−
+
−			for ( var i = this.items.length - 1; i >= 0; i-- )
+
−				this.items[i].item.removeData("sortableTree-item");
+
−
+
−		},
+
−		contactContainers: function(e) {
+
−			for (var i = this.containers.length - 1; i >= 0; i--){
+
−
+
−				if(this.intersectsWith(this.containers[i].containerCache)) {
+
−					if(!this.containers[i].containerCache.over) {
+
−
+
−						if(this.currentContainer != this.containers[i]) {
+
−
+
−							//When entering a new container, we will find the item with the least distance and append our item near it
+
−							var dist = 10000; var itemWithLeastDistance = null; var base = this.position.absolute.top;
+
−							for (var j = this.items.length - 1; j >= 0; j--) {
+
−								if(!this.containers[i].element[0].contains(this.items[j].item[0])) continue;
+
−								var cur = this.items[j].top;
+
−								if(Math.abs(cur - base) < dist) {
+
−									dist = Math.abs(cur - base); itemWithLeastDistance = this.items[j];
+
−								}
+
−							}
+
−
+
−							itemWithLeastDistance ? this.rearrange(e, itemWithLeastDistance) : this.rearrange(e, null, this.containers[i].element);
+
−							this.propagate("change", e); //Call plugins and callbacks
+
−							this.containers[i].propagate("change", e, this); //Call plugins and callbacks
+
−							this.currentContainer = this.containers[i];
+
−
+
−						}
+
−
+
−						this.containers[i].propagate("over", e, this);
+
−						this.containers[i].containerCache.over = 1;
+
−					}
+
−				} else {
+
−					if(this.containers[i].containerCache.over) {
+
−						this.containers[i].propagate("out", e, this);
+
−						this.containers[i].containerCache.over = 0;
+
−					}
+
−				}
+
−
+
−			};
+
−		},
+
−		mouseStart: function(e,el) {
+
−
+
−			if(this.options.disabled || this.options.type == 'static') return false;
+
−
+
−			//Find out if the clicked node (or one of its parents) is a actual item in this.items
+
−			var currentItem = null, nodes = $(e.target).parents().each(function() {
+
−				if($.data(this, 'sortableTree-item')) {
+
−					currentItem = $(this);
+
−					return false;
+
−				}
+
−			});
+
−			if($.data(e.target, 'sortableTree-item')) currentItem = $(e.target);
+
−
+
−			if(!currentItem) return false;
+
−			if(this.options.handle) {
+
−				var validHandle = false;
+
−				$(this.options.handle, currentItem).each(function() { if(this == e.target) validHandle = true; });
+
−				if(!validHandle) return false;
+
−			}
+
−
+
−			this.currentItem = currentItem;
+
−
+
−			var o = this.options;
+
−			this.currentContainer = this;
+
−			this.refresh();
+
−
+
−			//Create and append the visible helper
+
−			this.helper = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e, this.currentItem])) : this.currentItem.clone();
+
−			if(!this.helper.parents('body').length) this.helper.appendTo("body"); //Add the helper to the DOM if that didn't happen already
+
−			this.helper.css({ position: 'absolute', clear: 'both' }).addClass('ui-sortableTree-helper'); //Position it absolutely and add a helper class
+
−
+
−			//Prepare variables for position generation
+
−			$.extend(this, {
+
−				offsetParent: this.helper.offsetParent(),
+
−				offsets: { absolute: this.currentItem.offset() }
+
−			});
+
−
+
−			//Save the first time position
+
−			$.extend(this, {
+
−				position: {
+
−					current: { left: e.pageX, top: e.pageY },
+
−					absolute: { left: e.pageX, top: e.pageY },
+
−					dom: this.currentItem.prev()[0]
+
−				},
+
−				clickOffset: { left: -5, top: -5 }
+
−			});
+
−
+
−			this.propagate("start", e); //Call plugins and callbacks
+
−			this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() }; //Save and store the helper proportions
+
−
+
−			for (var i = this.containers.length - 1; i >= 0; i--) {
+
−				this.containers[i].propagate("activate", e, this);
+
−			} //Post 'activate' events to possible containers
+
−
+
−			//Prepare possible droppables
+
−			if($.ui.ddmanager) $.ui.ddmanager.current = this;
+
−			if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e);
+
−
+
−			this.dragging = true;
+
−			return true;
+
−
+
−		},
+
−		mouseStop: function(e) {
+
−
+
−			if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt); //remove sort indicator
+
−			this.propagate("stop", e); //Call plugins and trigger callbacks
+
−
+
−			//If we are using droppables, inform the manager about the drop
+
−			var dropped = ($.ui.ddmanager && !this.options.dropBehaviour) ? $.ui.ddmanager.drop(this, e) : false;
+
−			if(!dropped && this.newPositionAt) this.newPositionAt[this.direction == 'down' ? 'before' : 'after'](this.currentItem); //Append to element to its new position
+
−
+
−			if(this.position.dom != this.currentItem.prev()[0]) this.propagate("update", e); //Trigger update callback if the DOM position has changed
+
−			if(!this.element[0].contains(this.currentItem[0])) { //Node was moved out of the current element
+
−				this.propagate("remove", e);
+
−				for (var i = this.containers.length - 1; i >= 0; i--){
+
−					if(this.containers[i].element[0].contains(this.currentItem[0])) {
+
−						this.containers[i].propagate("update", e, this);
+
−						this.containers[i].propagate("receive", e, this);
+
−					}
+
−				};
+
−			};
+
−
+
−			//Post events to containers
+
−			for (var i = this.containers.length - 1; i >= 0; i--){
+
−				this.containers[i].propagate("deactivate", e, this);
+
−				if(this.containers[i].containerCache.over) {
+
−					this.containers[i].propagate("out", e, this);
+
−					this.containers[i].containerCache.over = 0;
+
−				}
+
−			}
+
−
+
−			this.dragging = false;
+
−			if(this.cancelHelperRemoval) return false;
+
−			this.helper.remove();
+
−
+
−			return false;
+
−
+
−		},
+
−		mouseDrag: function(e) {
+
−
+
−			//Compute the helpers position
+
−			this.position.current = { top: e.pageY + 5, left: e.pageX + 5 };
+
−			this.position.absolute = { left: e.pageX + 5, top: e.pageY + 5 };
+
−
+
−			//Interconnect with droppables
+
−			if($.ui.ddmanager) $.ui.ddmanager.drag(this, e);
+
−			var intersectsWithDroppable = false;
+
−			$.each($.ui.ddmanager.droppables, function() {
+
−				if(this.isover) intersectsWithDroppable = true;
+
−			});
+
−
+
−			//Rearrange
+
−			if(intersectsWithDroppable) {
+
−				if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt);
+
−			} else {
+
−				for (var i = this.items.length - 1; i >= 0; i--) {
+
−
+
−					if(this.currentItem[0].contains(this.items[i].item[0])) continue;
+
−
+
−					var intersection = this.intersectsWithEdge(this.items[i]);
+
−					if(!intersection) continue;
+
−
+
−					this.direction = intersection == 1 ? "down" : "up";
+
−					this.rearrange(e, this.items[i]);
+
−					this.propagate("change", e); //Call plugins and callbacks
+
−					break;
+
−				}
+
−			}
+
−
+
−			//Post events to containers
+
−			this.contactContainers(e);
+
−
+
−			this.propagate("sort", e); //Call plugins and callbacks
+
−			this.helper.css({ left: this.position.current.left+'px', top: this.position.current.top+'px' }); // Stick the helper to the cursor
+
−			return false;
+
−
+
−		},
+
−		rearrange: function(e, i, a) {
+
−			if(i) {
+
−				if(this.newPositionAt) this.options.sortIndication.remove.call(this.currentItem, this.newPositionAt);
+
−				this.newPositionAt = i.item;
+
−				this.options.sortIndication[this.direction].call(this.currentItem, this.newPositionAt);
+
−			} else {
+
−				//Append
+
−			}
+
−		}
+
−	}));
+
−
+
−	$.extend($.ui.sortableTree, {
+
−		defaults: {
+
−			items: '> *',
+
−			zIndex: 1000,
+
−			distance: 1
+
−		},
+
−		getter: "serialize toArray"
+
−	});
+
−
+
−
+
−
+
−})(jQuery);