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<h1 id="BiTreeDataModel">BiTreeDataModel</h1>
<p>This data model takes a a tree consisting of <code><a href="BiTreeNode2.html">BiTreeNode2</a></code> nodes and exposes
the interface needed by the <code><a href="BiTreeView.html">BiTreeView.</a></code> The internal tree does not have to
be a <code><a href="BiTreeNode2.html">BiTreeNode2</a></code> as long as getNodeChildren, getNodeHashCode, getCellText and
getSortFunction (if sorting is needed) are overridden.
The default implementation assumes that the data in the <code><a href="BiTreeNode2.html">BiTreeNode2</a></code> objects
are arrays containing the cell data.</p>
<p>This class extends
<code><a href="BiTreeViewDataModel.html">BiTreeViewDataModel</a></code>
and therefore all methods and fields available for
<code><a href="BiTreeViewDataModel.html">BiTreeViewDataModel</a></code>
are also available for <code>BiTreeDataModel</code>.</p>
<ul class="partial-class-tree">
<li><code><a href="BiObject.html">BiObject</a></code><ul>
<li><code><a href="BiEventTarget.html">BiEventTarget</a></code><ul><li><code><a href="BiTreeViewDataModel.html">BiTreeViewDataModel</a></code><ul><li><code>BiTreeDataModel</code><ul id="api-derived-classes"><li><code><a href="BiTree2DataModel.html">BiTree2DataModel</a></code></li></ul></li></ul></li></ul></li></ul>
</li>
</ul>
<h2>Constructor</h2>
<p><code>
new BiTreeDataModel([<span class="methodArgument">oRootNode</span>])</code></p>
<h3>Parameters</h3>
<table>
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td class="optional-header">Optional</td>
<td>Default</td>
<td>Descripton</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>oRootNode</code></td>
<td><code class="type">
<code><a href="BiTreeNode2.html">BiTreeNode2</a></code>
</code></td>
<td class="optional-column"><img src="check.png" alt="checked"></td>
<td></td>
<td>The optional node to act as the root for the data</td>
</tr>
</tbody>
</table>
<h2>Properties</h2>
<table>
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td class="get-header">get</td>
<td class="set-header">set</td>
<td>Descripton</td>
</tr>
</thead>
<tbody>
<tr>
<td><a name="rootNode"></a><code>rootNode</code></td>
<td><code class="type">
<code><a href="BiTreeNode2.html">BiTreeNode2</a></code>
</code></td>
<td class="get-column"><img src="check.png" alt="checked"></td>
<td class="set-column"><img src="check.png" alt="checked"></td>
<td>The tree node that is the root of the data</td>
</tr>
</tbody>
</table>
<h2>Methods</h2>
<table>
<thead>
<tr>
<td>Name</td>
<td>Description</td>
</tr>
</thead>
<tbody>
<tr>
<td><code><a href="#getNodeAt">getNodeAt</a></code></td>
<td>This returns the node at the given row</td>
</tr>
<tr>
<td><code><a href="#getNodeChildren">getNodeChildren</a></code></td>
<td>This returns the children of the tree node that is the root of the data. This should be overridden if your nodes are not instances of <code><a href="BiTreeNode2.html">BiTreeNode2</a></code>
</td>
</tr>
<tr>
<td><code><a href="#getNodeHashCode">getNodeHashCode</a></code></td>
<td>Returns a hash code for the node. It is useful to override this if you are building your own custom tree model that does not use <code><a href="BiTreeNode2.html">BiTreeNode2</a></code> as your tree nodes</td>
</tr>
<tr>
<td><code><a href="#insertRowAt">insertRowAt</a></code></td>
<td>inserts a new object into the tree rows</td>
</tr>
<tr>
<td><code><a href="#removeRowAt">removeRowAt</a></code></td>
<td>Removes the row at teh given row. This also removes any possible subtree of
the node</td>
</tr>
</tbody>
</table>
<h2>Events</h2>
<table>
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td class="bubbles-header">Bubbles</td>
<td>Descripton</td>
</tr>
</thead>
<tbody>
<tr>
<td><a name="beforecollapse"></a><code>beforecollapse</code></td>
<td><code class="type">
<code><a href="BiTreeViewDataModelEvent.html">BiTreeViewDataModelEvent</a></code>
</code></td>
<td class="bubbles-column"></td>
<td>This event is fired before a row is collapsed</td>
</tr>
<tr>
<td><a name="beforeexpand"></a><code>beforeexpand</code></td>
<td><code class="type">
<code><a href="BiTreeViewDataModelEvent.html">BiTreeViewDataModelEvent</a></code>
</code></td>
<td class="bubbles-column"></td>
<td>This event is fired before a row is expanded</td>
</tr>
<tr>
<td><a name="collapse"></a><code>collapse</code></td>
<td><code class="type">
<code><a href="BiTreeViewDataModelEvent.html">BiTreeViewDataModelEvent</a></code>
</code></td>
<td class="bubbles-column"></td>
<td>This event is fired when a row has collapsed</td>
</tr>
<tr>
<td><a name="datachanged"></a><code>datachanged</code></td>
<td><code class="type">
<code><a href="BiTreeViewDataModelEvent.html">BiTreeViewDataModelEvent</a></code>
</code></td>
<td class="bubbles-column"></td>
<td>This event is fired when the
data changes.</td>
</tr>
<tr>
<td><a name="expand"></a><code>expand</code></td>
<td><code class="type">
<code><a href="BiTreeViewDataModelEvent.html">BiTreeViewDataModelEvent</a></code>
</code></td>
<td class="bubbles-column"></td>
<td>This event is fired when a row has expanded</td>
</tr>
<tr>
<td><a name="rowcountchanged"></a><code>rowcountchanged</code></td>
<td><code class="type">
<code><a href="BiTreeViewDataModelEvent.html">BiTreeViewDataModelEvent</a></code>
</code></td>
<td class="bubbles-column"></td>
<td>This event is fired when the row count changes.
The rowIndex and the rowCount properties on the
event object are available for this event</td>
</tr>
</tbody>
</table>
<h2>Static Methods</h2>
<p>None.</p>
<h2>Static Fields</h2>
<p>None.</p>
<h2>Remarks</h2>
<p>None.</p>
<h2>Method Details</h2>
<h3><a name="getNodeAt"></a>getNodeAt</h3>
<p>This returns the node at the given row</p>
<h4>Syntax</h4>
<pre class="method-syntax">object.getNodeAt(<span class="methodArgument">y</span>)</pre>
<h4>Parameters</h4>
<table>
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td class="optional-header">Optional</td>
<td>Default</td>
<td>Descripton</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>y</code></td>
<td><code class="type">Number</code></td>
<td class="optional-column"></td>
<td></td>
<td>The index of the row</td>
</tr>
</tbody>
</table>
<h4>Return Type</h4>
<p><code class="type">
<code><a href="BiTreeNode2.html">BiTreeNode2</a></code>
</code></p>
<h3><a name="getNodeChildren"></a>getNodeChildren</h3>
<p>This returns the children of the tree node that is the root of the data. This should be overridden if your nodes are not instances of <code><a href="BiTreeNode2.html">BiTreeNode2</a></code>
</p>
<h4>Syntax</h4>
<pre class="method-syntax">object.getNodeChildren(<span class="methodArgument">oNode</span>)</pre>
<h4>Parameters</h4>
<table>
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td class="optional-header">Optional</td>
<td>Default</td>
<td>Descripton</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>oNode</code></td>
<td><code class="type">
<code><a href="BiTreeNode2.html">BiTreeNode2</a></code>
</code></td>
<td class="optional-column"></td>
<td></td>
<td>The object that acts as the root node</td>
</tr>
</tbody>
</table>
<h4>Return Type</h4>
<p><code class="type">
<code><a href="BiTreeNode2.html">BiTreeNode2[]</a></code>
</code></p>
<h3><a name="getNodeHashCode"></a>getNodeHashCode</h3>
<p>Returns a hash code for the node. It is useful to override this if you are building your own custom tree model that does not use <code><a href="BiTreeNode2.html">BiTreeNode2</a></code> as your tree nodes</p>
<h4>Syntax</h4>
<pre class="method-syntax">object.getNodeHashCode(<span class="methodArgument">oNode</span>)</pre>
<h4>Parameters</h4>
<table>
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td class="optional-header">Optional</td>
<td>Default</td>
<td>Descripton</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>oNode</code></td>
<td><code class="type">
<code><a href="BiTreeNode2.html">BiTreeNode2</a></code>
</code></td>
<td class="optional-column"></td>
<td></td>
<td>The node to get the hash code for</td>
</tr>
</tbody>
</table>
<h4>Return Type</h4>
<p><code class="type">String</code></p>
<h3><a name="insertRowAt"></a>insertRowAt</h3>
<p>inserts a new object into the tree rows</p>
<h4>Syntax</h4>
<pre class="method-syntax">object.insertRowAt(<span class="methodArgument">obj</span>, <span class="methodArgument">nParentRowIndex</span>, <span class="methodArgument">nChildIndex</span>)</pre>
<h4>Parameters</h4>
<table>
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td class="optional-header">Optional</td>
<td>Default</td>
<td>Descripton</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>obj</code></td>
<td><code class="type">
<code><a href="BiTreeNode2.html">BiTreeNode2</a></code>
</code></td>
<td class="optional-column"></td>
<td></td>
<td>The object describing the data</td>
</tr>
<tr>
<td><code>nParentRowIndex</code></td>
<td><code class="type">Number</code></td>
<td class="optional-column"></td>
<td></td>
<td>The index of the parent row</td>
</tr>
<tr>
<td><code>nChildIndex</code></td>
<td><code class="type">Number</code></td>
<td class="optional-column"></td>
<td></td>
<td>The position of the new child</td>
</tr>
</tbody>
</table>
<h4>Return Type</h4>
<p><code class="type">void</code></p>
<h3><a name="removeRowAt"></a>removeRowAt</h3>
<p>Removes the row at teh given row. This also removes any possible subtree of
the node</p>
<h4>Syntax</h4>
<pre class="method-syntax">object.removeRowAt(<span class="methodArgument">y</span>)</pre>
<h4>Parameters</h4>
<table>
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td class="optional-header">Optional</td>
<td>Default</td>
<td>Descripton</td>
</tr>
</thead>
<tbody>
<tr>
<td><code>y</code></td>
<td><code class="type">Number</code></td>
<td class="optional-column"></td>
<td></td>
<td>the row to remove</td>
</tr>
</tbody>
</table>
<h4>Return Type</h4>
<p><code class="type">void</code></p>
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