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/*
Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
Available via Academic Free License >= 2.1 OR the modified BSD license.
see: http://dojotoolkit.org/license for details
*/
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.getObject("tree", true, dojo);
dijit.tree._compareNodes = function(n1, n2){
if(n1 === n2){
return 0;
}
if('sourceIndex' in document.documentElement){ //IE
//TODO: does not yet work if n1 and/or n2 is a text node
return n1.sourceIndex - n2.sourceIndex;
}else if('compareDocumentPosition' in document.documentElement){ //FF, Opera
return n1.compareDocumentPosition(n2) & 2 ? 1: -1;
}else if(document.createRange){ //Webkit
var r1 = doc.createRange();
r1.setStartBefore(n1);
var r2 = doc.createRange();
r2.setStartBefore(n2);
return r1.compareBoundaryPoints(r1.END_TO_END, r2);
}else{
throw Error("dijit.tree._compareNodes don't know how to compare two different nodes in this browser");
}
};
dojo.declare("dijit.tree._dndContainer",
null,
{
// summary:
// This is a base class for `dijit.tree._dndSelector`, and isn't meant to be used directly.
// It's modeled after `dojo.dnd.Container`.
// tags:
// protected
/*=====
// current: DomNode
// The currently hovered TreeNode.rowNode (which is the DOM node
// associated w/a given node in the tree, excluding it's descendants)
current: null,
=====*/
constructor: function(tree, params){
// summary:
// A constructor of the Container
// tree: Node
// Node or node's id to build the container on
// params: dijit.tree.__SourceArgs
// A dict of parameters, which gets mixed into the object
// tags:
// private
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's DOM node
// states
this.containerState = "";
dojo.addClass(this.node, "dojoDndContainer");
// set up events
this.events = [
// container level events
dojo.connect(this.node, "onmouseenter", this, "onOverEvent"),
dojo.connect(this.node, "onmouseleave", this, "onOutEvent"),
// switching between TreeNodes
dojo.connect(this.tree, "_onNodeMouseEnter", this, "onMouseOver"),
dojo.connect(this.tree, "_onNodeMouseLeave", this, "onMouseOut"),
// cancel text selection and text dragging
dojo.connect(this.node, "ondragstart", dojo, "stopEvent"),
dojo.connect(this.node, "onselectstart", dojo, "stopEvent")
];
},
getItem: function(/*String*/ key){
// summary:
// Returns the dojo.dnd.Item (representing a dragged node) by it's key (id).
// Called by dojo.dnd.Source.checkAcceptance().
// tags:
// protected
var widget = this.selection[key],
ret = {
data: widget,
type: ["treeNode"]
};
return ret; // dojo.dnd.Item
},
destroy: function(){
// summary:
// Prepares this object to be garbage-collected
dojo.forEach(this.events, dojo.disconnect);
// this.clearItems();
this.node = this.parent = null;
},
// mouse events
onMouseOver: function(/*TreeNode*/ widget, /*Event*/ evt){
// summary:
// Called when mouse is moved over a TreeNode
// tags:
// protected
this.current = widget;
},
onMouseOut: function(/*TreeNode*/ widget, /*Event*/ evt){
// summary:
// Called when mouse is moved away from a TreeNode
// tags:
// protected
this.current = null;
},
_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.replaceClass(this.node, prefix + newState, prefix + this[state]);
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);
},
onOverEvent: function(){
// summary:
// This function is called once, when mouse is over our container
// tags:
// protected
this._changeState("Container", "Over");
},
onOutEvent: function(){
// summary:
// This function is called once, when mouse is out of our container
// tags:
// protected
this._changeState("Container", "");
}
});
}
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