| =encoding utf8
=head1 Class Tree Documentation
=head2 Description
Class Tree - XML Generator for DHTMLX
=head3 construct
B<$tree = new Tree( set encoding, default utf-8 )>
    $tree = new Tree;
    
or
    $tree = new Tree('iso-8859-1');
=head3 attributes
B<id>
    $tree->id = 0; // default 0
    
B<radio>
    $tree->radio = 0;
    
B<order> 
    $tree->order = "asc";
=head3 item
B<$tree-E<gt>item( array( 'key attribute' =E<gt> 'value attribute' ) )>
    $tree->item(
        array(
            "id" => "p1",
            "text" => "parent item 1",
            "select" => "1",
            "call" => "1"
            "userdata" => array(
                "name" => "some1",
                "value" => "Value 1"
            ),
            "item" => array(
                array(
                     "id" => "c1-0", 
                     "text" => "child item 1"
                ),
                array(
                     "id" => "c1-1", 
                     "text" => "child item 2"
                )
            )
        )
    );
    
=head3 start and end
B<$tree-E<gt>start( array( 'key attribute' =E<gt> 'value attribute' ) )> and B<$form-E<gt>end()>
    $tree->start(
        array(
            "id" => "p1",
            "text" => "parent item 1",
            "select" => "1",
            "call" => "1"
        )
    );
    
    $tree->item(
        array(
             "id" => "c1-0", 
             "text" => "child item 1"
        ),
        array(
             "id" => "c1-1", 
             "text" => "child item 2"
        )
    );
    
    $tree->end();
            
=head3 itemtext
B<$tree-E<gt>itemtext( ' value ' )>
    $tree->itemtext("Value");
    
=head3 userdata
B<$tree-E<gt>userdata( array( 'key attribute' =E<gt> 'value attribute' ) )>
    $tree->userdata(
        array(
            "name" => "some1",
            "value" => "Value1"
        ),
        array(
            "name" => "some2",
            "value" => "Value2"
        )
    );
=head3 header
B<$tree-E<gt>header()>
    $tree->header();
    
return
    header("Content-type: application/xml; charset=utf-8");
=head3 result
B<$tree-E<gt>result()>
    echo $tree->result();
    
Print XML
=head2 Examples
=head3 Example 1
B<Mode 1>
    <?php
    include_once 'DHX.php';
    
    $tree = new Tree;
    
    $tree->item(
        array(
            "id" => "p1",
            "text" => "parent item 1",
            "select" => "1",
            "call" => "1",
            "itemtext" => "Value Item Text",
            "userdata" => array(
                "name" => "some1",
                "value" => "Value 1"
            ),
            "item" => array(
                array(
                     "id" => "c1-0", 
                     "text" => "child item 1"
                ),
                array(
                     "id" => "c1-1", 
                     "text" => "child item 2"
                )
            )
        )
    );
    
    $tree->header();
    echo $tree->result();
    ?>
    
B<Result>
    <?xml version="1.0" encoding="utf-8"?>
    <tree id="0">
        <item id="p1" text="parent item 1" select="1" call="1">
            <itemtext>
                <![CDATA[ Value Item Text ]]>
            </itemtext>
            <userdata name="some1">Value 1</userdata>
            <item id="c1-0" text="child item 1"/>
            <item id="c1-1" text="child item 2"/>
        </item>
    </tree>
    
B<Mode 2>
    <?php
    include_once 'DHX.php';
    
    $tree = new Tree("iso-8859-1");
    
    // start p1
    $tree->start(
        array(
            "id" => "p1",
            "text" => "parent item 1",
            "select" => "1",
            "call" => "1",
        )
    );
    
    $tree->itemtext("Value Item Text");
    
    $tree->userdata(
        array(
            "name" => "some1",
            "value" => "Value 1"
        )
    );
    
    $tree->item(
        array(
             "id" => "c1-0", 
             "text" => "child item 1"
        ),
        array(
             "id" => "c1-1", 
             "text" => "child item 2"
        )
    );
    
    $tree->end(); // end p1
    
    $tree->header();
    echo $tree->result();
    ?>
    
B<Result>
    <?xml version="1.0" encoding="iso-8859-1"?>
    <tree id="0">
        <item id="p1" text="parent item 1" select="1" call="1">
            <itemtext>
                <![CDATA[ Value Item Text ]]>
            </itemtext>
            <userdata name="some1">Value 1</userdata>
            <item id="c1-0" text="child item 1"/>
            <item id="c1-1" text="child item 2"/>
        </item>
    </tree>
    
=head2 Author
B<Lucas Tiago de Moraes>
=head2 Support
L<Group DHTMLX Facebook|https://www.facebook.com/groups/195216390589070/>
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