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63 lines
2.1 KiB
63 lines
2.1 KiB
9 years ago
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/**
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* This class is used as a base class from which to derive Models used in Trees.
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*/
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Ext.define('Ext.data.TreeModel', {
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extend: 'Ext.data.Model',
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requires: [
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'Ext.data.NodeInterface'
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],
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mixins: [
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'Ext.mixin.Queryable'
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],
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/**
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* @cfg {String} [childType]
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* The class name of child nodes to create when reading child nodes from
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* raw data. By default the type configured into the TreeStore is used.
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*
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* This is one way of creating heterogeneous nodes in a tree.
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*
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* To do this through data types passed from the server, use the {@link Ext.data.reader.Reader#typeProperty}.
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*
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* for example in the case of a hidden root node, you'd use the default type at level zero. See {@link Ext.tree.Panel TreePanel}'s
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* documentation for an example.
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*
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* *Important*
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* If you are using this declaration on your tree models, and have a {@link Ext.tree.Panel#rootVisible hidden root node}, you
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* MUST create a special root model definition which declares the type of its children.
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*
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* If you allow the TreeStore to create a root node of the same type as the first level of *visible* nodes
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* then the reader will atempt to read the wrong type of child node for the root.
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*
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* Example:
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*
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* Ext.define('myApp.World', {
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* childType: 'Territory'
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* });
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*
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* ...
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*
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* store: {
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* id: 'myTreeStore',
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* model: 'myApp.World' // The hidden root will know to create 'Territory' type children.
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* }
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*
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* If the root is hidden, and the first level of visible nodes are going to be the `myApp.Territory` class,
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* then the hidden root must not be of the `myApp.Territory` class. Otherwise, it would try to read in the
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* territory data as its childType - most likely 'Country'.
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*
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*/
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getRefItems: function() {
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return this.childNodes;
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},
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getRefOwner: function() {
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return this.parentNode;
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}
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},
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function () {
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Ext.data.NodeInterface.decorate(this);
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});
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