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<?xml version="1.0" encoding="UTF-8"?>
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<document id="tree-views">
<properties>
<title>Tree Views</title>
<explore>TreeView</explore>
</properties>
<body>
<p>
Tree views are used to present nested lists of data that form a hierarchy. A tree
view's data is specified just like that of a <a href="lists.html">list view</a>,
but any item in the tree data that is itself an instance of
<tt>org.apache.pivot.collections.List</tt> will be treated as a branch in the tree,
and the user will be able to expand the branch to see its children.
</p>
<p>
The following example shows a basic tree view. This example specifies the tree data as
the contents of <tt>tree_data.bxml</tt>. For the purpose of this example, this data is
static. A real application could load dynamic data and use a custom renderer to present
the raw data straight to the user.
</p>
<application class="org.apache.pivot.wtk.ScriptApplication" width="300" height="300">
<libraries>
<library>core</library>
<library>wtk</library>
<library>wtk-terra</library>
<library>tutorials</library>
</libraries>
<startup-properties>
<src>/org/apache/pivot/tutorials/treeviews/tree_views.bxml</src>
</startup-properties>
</application>
<p>The BXML for this example is shown below:</p>
<source type="xml" location="org/apache/pivot/tutorials/treeviews/tree_views.bxml">
<![CDATA[
<Window title="Tree Views" maximized="true"
xmlns:bxml="http://pivot.apache.org/bxml"
xmlns="org.apache.pivot.wtk">
<Border>
<ScrollPane horizontalScrollBarPolicy="fill_to_capacity">
<TreeView>
<treeData>
<bxml:include src="tree_data.bxml"/>
</treeData>
</TreeView>
</ScrollPane>
</Border>
</Window>
]]>
</source>
<p>
The BXML that defines the tree data is shown below.
</p>
<source type="xml" location="org/apache/pivot/tutorials/treeviews/tree_data.bxml">
<![CDATA[
<TreeBranch xmlns="org.apache.pivot.wtk.content">
<TreeBranch text="Activity" icon="/org/apache/pivot/tutorials/folder.png">
<TreeBranch text="Games" icon="/org/apache/pivot/tutorials/folder.png">
<TreeNode text="Foosball" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Ping Pong" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Air Hockey" icon="/org/apache/pivot/tutorials/page_white.png"/>
</TreeBranch>
<TreeBranch text="Sports" icon="/org/apache/pivot/tutorials/folder.png">
<TreeNode text="Baseball" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Basketball" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Football" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Ice Hockey" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Soccer" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Softball" icon="/org/apache/pivot/tutorials/page_white.png"/>
</TreeBranch>
<TreeNode text="Camping" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Skiing" icon="/org/apache/pivot/tutorials/page_white.png"/>
</TreeBranch>
<TreeBranch text="Occasion" icon="/org/apache/pivot/tutorials/folder.png">
<TreeBranch text="Holidays" icon="/org/apache/pivot/tutorials/folder.png">
<TreeNode text="Christmas" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Independence Day" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Labor Day" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="New Year's Day" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="President's Day" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Thanksgiving" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Valentine's Day" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Veteran's Day" icon="/org/apache/pivot/tutorials/page_white.png"/>
</TreeBranch>
<TreeNode text="Anniversary" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Birthday" icon="/org/apache/pivot/tutorials/page_white.png"/>
<TreeNode text="Wedding" icon="/org/apache/pivot/tutorials/page_white.png"/>
</TreeBranch>
<TreeBranch text="Location" icon="/org/apache/pivot/tutorials/folder.png">
<TreeNode text="Africa" icon="/org/apache/pivot/tutorials/folder.png"/>
<TreeNode text="Antarctica" icon="/org/apache/pivot/tutorials/folder.png"/>
<TreeNode text="Asia" icon="/org/apache/pivot/tutorials/folder.png"/>
<TreeNode text="Australia" icon="/org/apache/pivot/tutorials/folder.png"/>
<TreeNode text="Europe" icon="/org/apache/pivot/tutorials/folder.png"/>
<TreeNode text="North America" icon="/org/apache/pivot/tutorials/folder.png"/>
<TreeBranch text="South America" icon="/org/apache/pivot/tutorials/folder.png">
<TreeNode text="Peru" icon="/org/apache/pivot/tutorials/page_white.png"/>
</TreeBranch>
</TreeBranch>
</TreeBranch>
]]>
</source>
<p>
Since this example is written entirely in BXML, there is no associated Java source.
</p>
</body>
</document>