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if(!dojo._hasResource["dijit._tree.dndContainer"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dijit._tree.dndContainer"] = true;
dojo.provide("dijit._tree.dndContainer");
dojo.require("dojo.dnd.common");
dojo.require("dojo.dnd.Container");
dojo.declare("dijit._tree.dndContainer",
null,
{
constructor: function(tree, params){
// summary: a constructor of the Container
// tree: Node: node or node's id to build the container on
// params: Object: a dict of parameters, which gets mixed into the object
this.tree = tree;
this.node = tree.domNode; // TODO: rename; it's not a TreeNode but the whole Tree
dojo.mixin(this, params);
// class-specific variables
this.map = {};
this.current = null; // current TreeNode
// 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", dojo, "stopEvent"),
dojo.connect(this.node, "onselectstart", dojo, "stopEvent")
];
},
// abstract access to the map
getItem: function(/*String*/ key){
// summary: returns a data item by its key (id)
//console.log("Container getItem()", arguments,this.map, this.map[key], this.selection[key]);
return this.selection[key];
//return this.map[key]; // Object
},
// mouse events
onMouseOver: function(e){
// summary: event processor for onmouseover
// e: Event: mouse event
// handle when mouse has just moved over the Tree itself (not a TreeNode, but the Tree)
var rt = e.relatedTarget; // the previous location
while(rt){
if(rt == this.node){ break; }
try{
rt = rt.parentNode;
}catch(x){
rt = null;
}
}
if(!rt){
this._changeState("Container", "Over");
this.onOverEvent();
}
// code below is for handling depending on which TreeNode we are over
var n = this._getChildByEvent(e); // the TreeNode
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();
},
_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;
},
_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(dojo.hasClass(node, "dijitTreeContent")){ return node; }
}
}
return null;
},
markupFactory: function(tree, params){
params._skipStartup = true;
return new dijit._tree.dndContainer(tree, params);
},
_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);
},
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
}
});
}
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