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define("dijit/_Container", [
"dojo/_base/array", // array.forEach array.indexOf
"dojo/_base/declare", // declare
"dojo/dom-construct", // domConstruct.place
"./registry" // registry.byNode()
], function(array, declare, domConstruct, registry){
// module:
// dijit/_Container
// summary:
// Mixin for widgets that contain a set of widget children.
return declare("dijit._Container", null, {
// summary:
// Mixin for widgets that contain a set of widget children.
// description:
// Use this mixin for widgets that needs to know about and
// keep track of their widget children. Suitable for widgets like BorderContainer
// and TabContainer which contain (only) a set of child widgets.
//
// It's not suitable for widgets like ContentPane
// which contains mixed HTML (plain DOM nodes in addition to widgets),
// and where contained widgets are not necessarily directly below
// this.containerNode. In that case calls like addChild(node, position)
// wouldn't make sense.
buildRendering: function(){
this.inherited(arguments);
if(!this.containerNode){
// all widgets with descendants must set containerNode
this.containerNode = this.domNode;
}
},
addChild: function(/*dijit._Widget*/ widget, /*int?*/ insertIndex){
// summary:
// Makes the given widget a child of this widget.
// description:
// Inserts specified child widget's dom node as a child of this widget's
// container node, and possibly does other processing (such as layout).
var refNode = this.containerNode;
if(insertIndex && typeof insertIndex == "number"){
var children = this.getChildren();
if(children && children.length >= insertIndex){
refNode = children[insertIndex-1].domNode;
insertIndex = "after";
}
}
domConstruct.place(widget.domNode, refNode, insertIndex);
// If I've been started but the child widget hasn't been started,
// start it now. Make sure to do this after widget has been
// inserted into the DOM tree, so it can see that it's being controlled by me,
// so it doesn't try to size itself.
if(this._started && !widget._started){
widget.startup();
}
},
removeChild: function(/*Widget|int*/ widget){
// summary:
// Removes the passed widget instance from this widget but does
// not destroy it. You can also pass in an integer indicating
// the index within the container to remove
if(typeof widget == "number"){
widget = this.getChildren()[widget];
}
if(widget){
var node = widget.domNode;
if(node && node.parentNode){
node.parentNode.removeChild(node); // detach but don't destroy
}
}
},
hasChildren: function(){
// summary:
// Returns true if widget has children, i.e. if this.containerNode contains something.
return this.getChildren().length > 0; // Boolean
},
_getSiblingOfChild: function(/*dijit._Widget*/ child, /*int*/ dir){
// summary:
// Get the next or previous widget sibling of child
// dir:
// if 1, get the next sibling
// if -1, get the previous sibling
// tags:
// private
var node = child.domNode,
which = (dir>0 ? "nextSibling" : "previousSibling");
do{
node = node[which];
}while(node && (node.nodeType != 1 || !registry.byNode(node)));
return node && registry.byNode(node); // dijit._Widget
},
getIndexOfChild: function(/*dijit._Widget*/ child){
// summary:
// Gets the index of the child in this container or -1 if not found
return array.indexOf(this.getChildren(), child); // int
}
});
});
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