--- /dev/null
+if(!dojo._hasResource["dojo.dnd.Container"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojo.dnd.Container"] = true;
+dojo.provide("dojo.dnd.Container");
+
+dojo.require("dojo.dnd.common");
+dojo.require("dojo.parser");
+
+/*
+ Container states:
+ "" - normal state
+ "Over" - mouse over a container
+ Container item states:
+ "" - normal state
+ "Over" - mouse over a container item
+*/
+
+dojo.declare("dojo.dnd.Container", null, {
+ // summary: a Container object, which knows when mouse hovers over it,
+ // and know over which element it hovers
+
+ // object attributes (for markup)
+ skipForm: false,
+
+ constructor: function(node, params){
+ // summary: a constructor of the Container
+ // node: Node: node or node's id to build the container on
+ // params: Object: a dict of parameters, recognized parameters are:
+ // creator: Function: a creator function, which takes a data item, and returns an object like that:
+ // {node: newNode, data: usedData, type: arrayOfStrings}
+ // skipForm: Boolean: don't start the drag operation, if clicked on form elements
+ // _skipStartup: Boolean: skip startup(), which collects children, for deferred initialization
+ // (this is used in the markup mode)
+ this.node = dojo.byId(node);
+ if(!params){ params = {}; }
+ this.creator = params.creator || null;
+ this.skipForm = params.skipForm;
+ this.defaultCreator = dojo.dnd._defaultCreator(this.node);
+
+ // class-specific variables
+ this.map = {};
+ this.current = null;
+
+ // states
+ this.containerState = "";
+ dojo.addClass(this.node, "dojoDndContainer");
+
+ // mark up children
+ if(!(params && params._skipStartup)){
+ this.startup();
+ }
+
+ // set up events
+ this.events = [
+ dojo.connect(this.node, "onmouseover", this, "onMouseOver"),
+ dojo.connect(this.node, "onmouseout", this, "onMouseOut"),
+ // cancel text selection and text dragging
+ dojo.connect(this.node, "ondragstart", this, "onSelectStart"),
+ dojo.connect(this.node, "onselectstart", this, "onSelectStart")
+ ];
+ },
+
+ // object attributes (for markup)
+ creator: function(){}, // creator function, dummy at the moment
+
+ // abstract access to the map
+ getItem: function(/*String*/ key){
+ // summary: returns a data item by its key (id)
+ return this.map[key]; // Object
+ },
+ setItem: function(/*String*/ key, /*Object*/ data){
+ // summary: associates a data item with its key (id)
+ this.map[key] = data;
+ },
+ delItem: function(/*String*/ key){
+ // summary: removes a data item from the map by its key (id)
+ delete this.map[key];
+ },
+ forInItems: function(/*Function*/ f, /*Object?*/ o){
+ // summary: iterates over a data map skipping members, which
+ // are present in the empty object (IE and/or 3rd-party libraries).
+ o = o || dojo.global;
+ var m = this.map, e = dojo.dnd._empty;
+ for(var i in this.map){
+ if(i in e){ continue; }
+ f.call(o, m[i], i, m);
+ }
+ },
+ clearItems: function(){
+ // summary: removes all data items from the map
+ this.map = {};
+ },
+
+ // methods
+ getAllNodes: function(){
+ // summary: returns a list (an array) of all valid child nodes
+ return dojo.query("> .dojoDndItem", this.parent); // NodeList
+ },
+ insertNodes: function(data, before, anchor){
+ // summary: inserts an array of new nodes before/after an anchor node
+ // data: Array: a list of data items, which should be processed by the creator function
+ // before: Boolean: insert before the anchor, if true, and after the anchor otherwise
+ // anchor: Node: the anchor node to be used as a point of insertion
+ if(!this.parent.firstChild){
+ anchor = null;
+ }else if(before){
+ if(!anchor){
+ anchor = this.parent.firstChild;
+ }
+ }else{
+ if(anchor){
+ anchor = anchor.nextSibling;
+ }
+ }
+ if(anchor){
+ for(var i = 0; i < data.length; ++i){
+ var t = this._normalizedCreator(data[i]);
+ this.setItem(t.node.id, {data: t.data, type: t.type});
+ this.parent.insertBefore(t.node, anchor);
+ }
+ }else{
+ for(var i = 0; i < data.length; ++i){
+ var t = this._normalizedCreator(data[i]);
+ this.setItem(t.node.id, {data: t.data, type: t.type});
+ this.parent.appendChild(t.node);
+ }
+ }
+ return this; // self
+ },
+ destroy: function(){
+ // summary: prepares the object to be garbage-collected
+ dojo.forEach(this.events, dojo.disconnect);
+ this.clearItems();
+ this.node = this.parent = this.current;
+ },
+
+ // markup methods
+ markupFactory: function(params, node){
+ params._skipStartup = true;
+ return new dojo.dnd.Container(node, params);
+ },
+ startup: function(){
+ // summary: collects valid child items and populate the map
+
+ // set up the real parent node
+ this.parent = this.node;
+ if(this.parent.tagName.toLowerCase() == "table"){
+ var c = this.parent.getElementsByTagName("tbody");
+ if(c && c.length){ this.parent = c[0]; }
+ }
+
+ // process specially marked children
+ this.getAllNodes().forEach(function(node){
+ if(!node.id){ node.id = dojo.dnd.getUniqueId(); }
+ var type = node.getAttribute("dndType"),
+ data = node.getAttribute("dndData");
+ this.setItem(node.id, {
+ data: data ? data : node.innerHTML,
+ type: type ? type.split(/\s*,\s*/) : ["text"]
+ });
+ }, this);
+ },
+
+ // mouse events
+ onMouseOver: function(e){
+ // summary: event processor for onmouseover
+ // e: Event: mouse event
+ var n = e.relatedTarget;
+ while(n){
+ if(n == this.node){ break; }
+ try{
+ n = n.parentNode;
+ }catch(x){
+ n = null;
+ }
+ }
+ if(!n){
+ this._changeState("Container", "Over");
+ this.onOverEvent();
+ }
+ n = this._getChildByEvent(e);
+ if(this.current == n){ return; }
+ if(this.current){ this._removeItemClass(this.current, "Over"); }
+ if(n){ this._addItemClass(n, "Over"); }
+ this.current = n;
+ },
+ onMouseOut: function(e){
+ // summary: event processor for onmouseout
+ // e: Event: mouse event
+ for(var n = e.relatedTarget; n;){
+ if(n == this.node){ return; }
+ try{
+ n = n.parentNode;
+ }catch(x){
+ n = null;
+ }
+ }
+ if(this.current){
+ this._removeItemClass(this.current, "Over");
+ this.current = null;
+ }
+ this._changeState("Container", "");
+ this.onOutEvent();
+ },
+ onSelectStart: function(e){
+ // summary: event processor for onselectevent and ondragevent
+ // e: Event: mouse event
+ if(!this.skipForm || !dojo.dnd.isFormElement(e)){
+ dojo.stopEvent(e);
+ }
+ },
+
+ // utilities
+ onOverEvent: function(){
+ // summary: this function is called once, when mouse is over our container
+ },
+ onOutEvent: function(){
+ // summary: this function is called once, when mouse is out of our container
+ },
+ _changeState: function(type, newState){
+ // summary: changes a named state to new state value
+ // type: String: a name of the state to change
+ // newState: String: new state
+ var prefix = "dojoDnd" + type;
+ var state = type.toLowerCase() + "State";
+ //dojo.replaceClass(this.node, prefix + newState, prefix + this[state]);
+ dojo.removeClass(this.node, prefix + this[state]);
+ dojo.addClass(this.node, prefix + newState);
+ this[state] = newState;
+ },
+ _addItemClass: function(node, type){
+ // summary: adds a class with prefix "dojoDndItem"
+ // node: Node: a node
+ // type: String: a variable suffix for a class name
+ dojo.addClass(node, "dojoDndItem" + type);
+ },
+ _removeItemClass: function(node, type){
+ // summary: removes a class with prefix "dojoDndItem"
+ // node: Node: a node
+ // type: String: a variable suffix for a class name
+ dojo.removeClass(node, "dojoDndItem" + type);
+ },
+ _getChildByEvent: function(e){
+ // summary: gets a child, which is under the mouse at the moment, or null
+ // e: Event: a mouse event
+ var node = e.target;
+ if(node){
+ for(var parent = node.parentNode; parent; node = parent, parent = node.parentNode){
+ if(parent == this.parent && dojo.hasClass(node, "dojoDndItem")){ return node; }
+ }
+ }
+ return null;
+ },
+ _normalizedCreator: function(item, hint){
+ // summary: adds all necessary data to the output of the user-supplied creator function
+ var t = (this.creator ? this.creator : this.defaultCreator)(item, hint);
+ if(!dojo.isArray(t.type)){ t.type = ["text"]; }
+ if(!t.node.id){ t.node.id = dojo.dnd.getUniqueId(); }
+ dojo.addClass(t.node, "dojoDndItem");
+ return t;
+ }
+});
+
+dojo.dnd._createNode = function(tag){
+ // summary: returns a function, which creates an element of given tag
+ // (SPAN by default) and sets its innerHTML to given text
+ // tag: String: a tag name or empty for SPAN
+ if(!tag){ return dojo.dnd._createSpan; }
+ return function(text){ // Function
+ var n = dojo.doc.createElement(tag);
+ n.innerHTML = text;
+ return n;
+ };
+};
+
+dojo.dnd._createTrTd = function(text){
+ // summary: creates a TR/TD structure with given text as an innerHTML of TD
+ // text: String: a text for TD
+ var tr = dojo.doc.createElement("tr");
+ var td = dojo.doc.createElement("td");
+ td.innerHTML = text;
+ tr.appendChild(td);
+ return tr; // Node
+};
+
+dojo.dnd._createSpan = function(text){
+ // summary: creates a SPAN element with given text as its innerHTML
+ // text: String: a text for SPAN
+ var n = dojo.doc.createElement("span");
+ n.innerHTML = text;
+ return n; // Node
+};
+
+// dojo.dnd._defaultCreatorNodes: Object: a dicitionary, which maps container tag names to child tag names
+dojo.dnd._defaultCreatorNodes = {ul: "li", ol: "li", div: "div", p: "div"};
+
+dojo.dnd._defaultCreator = function(node){
+ // summary: takes a container node, and returns an appropriate creator function
+ // node: Node: a container node
+ var tag = node.tagName.toLowerCase();
+ var c = tag == "table" ? dojo.dnd._createTrTd : dojo.dnd._createNode(dojo.dnd._defaultCreatorNodes[tag]);
+ return function(item, hint){ // Function
+ var isObj = dojo.isObject(item) && item;
+ var data = (isObj && item.data) ? item.data : item;
+ var type = (isObj && item.type) ? item.type : ["text"];
+ var t = String(data), n = (hint == "avatar" ? dojo.dnd._createSpan : c)(t);
+ n.id = dojo.dnd.getUniqueId();
+ return {node: n, data: data, type: type};
+ };
+};
+
+}
projects / eow / blobdiff