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dijit/tree/Model

This is an abstract interface that describes the methods and properties provided by a tree model.

The dijit/tree/ObjectStoreModel is an example of a pre-built instance of this interface.

An implementation of this interface must provide:

• destroy

• getChildren – Obtain a list of children of the passed in item.

• getIdentity – Return the identity of the passed in item.

• getLabel – Return the label that should be used for the item in the tree.

• getRoot(onItem) – Calls a function with the root items as a parameter. Note: This is

rather subtle. We would have expected this to return the root item but take care to note that

it is a function that needs to be called which is passed as a parameter.

• isItem

• mayHaveChildren – Determine if the passed in item may have children.

• newItem

• pasteItem

and publish the following events:

• onClick(item, node, event) – Called when an item in the tree is clicked.

• onChange

• onChildrenChange

A template for this object might be:

var model = {

destroy: function() {

getChildren: function(parentItem, onComplete) {

getIdentity: function(item) {

getLabel: function(item) {

getRoot: function(onItem) {

onItem(root); // Note

isItem: function(item) {

mayHaveChildren: function(item) {

newItem: function(item) {

pasteItem: function(childItem, oldParentItem, newParentItem, bCopy, insertIndex, before) {

onChange: function(item) {

onChildrenChange: function(parent, newChildrenList) {

}

};

dijit/tree/ObjectStoreModel

The dijit/tree/ObjectStoreModel is a provided implementation of the

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