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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<div class="navpath"><a class="el" href="namespaceWt.html">Wt</a>::<a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a>
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<h1>Wt::WTreeNode Class Reference</h1><!-- doxytag: class="Wt::WTreeNode" --><!-- doxytag: inherits="Wt::WCompositeWidget" -->A single node in a tree.
<a href="#_details">More...</a>
<p>
<code>#include <Wt/WTreeNode></code>
<p>
<div class="dynheader">
Inheritance diagram for Wt::WTreeNode:</div>
<div class="dynsection">
<p><center><img src="classWt_1_1WTreeNode__inherit__graph.png" border="0" usemap="#Wt_1_1WTreeNode__inherit__map" alt="Inheritance graph"></center>
<map name="Wt_1_1WTreeNode__inherit__map">
<area shape="rect" href="classWt_1_1WTreeTableNode.html" title="A specialized tree node which allows additional data to be associated with each node..." alt="" coords="13,304,157,331"><area shape="rect" href="classWt_1_1WCompositeWidget.html" title="A widget that hides the implementation of composite widgets." alt="" coords="5,155,165,181"><area shape="rect" href="classWt_1_1WWidget.html" title="The abstract base class for a user-interface component." alt="" coords="37,80,133,107"><area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="37,5,133,32"></map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
<p>
<a href="classWt_1_1WTreeNode-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Types</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">enum </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bff">LoadPolicy</a> { <a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bff4a962a514c531fb52c5958f61950ff3e">LazyLoading</a>,
<a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bfff771c90906d73ed5eb1e6728366241e1">PreLoading</a>,
<a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bff387323cbdc8efd12ef6bf8553876c011">NextLevelLoading</a>
}</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">An enumeration for the policy to load children. <a href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bff">More...</a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">enum </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#0deb92963922074b6262f71e9fccd24a">ChildCountPolicy</a> { <a class="el" href="classWt_1_1WTreeNode.html#0deb92963922074b6262f71e9fccd24a3b31c2b770a9acffa43daedf402df6cd">Disabled</a>,
<a class="el" href="classWt_1_1WTreeNode.html#0deb92963922074b6262f71e9fccd24aebbfd35e39c920c5f2dbe74380e3abce">Enabled</a>,
<a class="el" href="classWt_1_1WTreeNode.html#0deb92963922074b6262f71e9fccd24a256625b6187b3107b1eb201c1758a793">Lazy</a>
}</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">An enumeration for the policy to display the child count. <a href="classWt_1_1WTreeNode.html#0deb92963922074b6262f71e9fccd24a">More...</a><br></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#169f429e0f0e1fe6d0874f9db72d041a">WTreeNode</a> (const <a class="el" href="classWt_1_1WString.html">WString</a> &labelText, <a class="el" href="classWt_1_1WIconPair.html">WIconPair</a> *labelIcon=0, <a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> *parentNode=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a tree node with the given label. <a href="#169f429e0f0e1fe6d0874f9db72d041a"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="1ec9b14cd8388631acbb3e82649d0d67"></a><!-- doxytag: member="Wt::WTreeNode::~WTreeNode" ref="1ec9b14cd8388631acbb3e82649d0d67" args="()" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#1ec9b14cd8388631acbb3e82649d0d67">~WTreeNode</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="32c24104359b595cbaf914e35accb3b4"></a><!-- doxytag: member="Wt::WTreeNode::label" ref="32c24104359b595cbaf914e35accb3b4" args="() const " -->
<a class="el" href="classWt_1_1WText.html">WText</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#32c24104359b595cbaf914e35accb3b4">label</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the label. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2095a273249da81688699ff9750ea2a4"></a><!-- doxytag: member="Wt::WTreeNode::labelIcon" ref="2095a273249da81688699ff9750ea2a4" args="() const " -->
<a class="el" href="classWt_1_1WIconPair.html">WIconPair</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#2095a273249da81688699ff9750ea2a4">labelIcon</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the label icon. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="906d6afe249fbebd9735dc9c9ca11166"></a><!-- doxytag: member="Wt::WTreeNode::setLabelIcon" ref="906d6afe249fbebd9735dc9c9ca11166" args="(WIconPair *labelIcon)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#906d6afe249fbebd9735dc9c9ca11166">setLabelIcon</a> (<a class="el" href="classWt_1_1WIconPair.html">WIconPair</a> *labelIcon)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the label icon. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="deb2bd7c946ef9c7bb5b72b3f88453a6"></a><!-- doxytag: member="Wt::WTreeNode::addChildNode" ref="deb2bd7c946ef9c7bb5b72b3f88453a6" args="(WTreeNode *node)" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#deb2bd7c946ef9c7bb5b72b3f88453a6">addChildNode</a> (<a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> *node)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Adds a child node. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="6513443612d2456a69610e744bc629f4"></a><!-- doxytag: member="Wt::WTreeNode::removeChildNode" ref="6513443612d2456a69610e744bc629f4" args="(WTreeNode *node)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#6513443612d2456a69610e744bc629f4">removeChildNode</a> (<a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> *node)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Removes a child node. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a0f780835958f27b08fed66c1e4461e7"></a><!-- doxytag: member="Wt::WTreeNode::childNodes" ref="a0f780835958f27b08fed66c1e4461e7" args="() const " -->
const std::vector< <a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> * > & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a0f780835958f27b08fed66c1e4461e7">childNodes</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the list of children. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#1a2bec02861430af0a8b80dd9e84324e">displayedChildCount</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the number of children that should be displayed. <a href="#1a2bec02861430af0a8b80dd9e84324e"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#5a625b5a94386386dabd36277d5f7c1b">setChildCountPolicy</a> (<a class="el" href="classWt_1_1WTreeNode.html#0deb92963922074b6262f71e9fccd24a">ChildCountPolicy</a> policy)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Configures how and when the child count should be displayed. <a href="#5a625b5a94386386dabd36277d5f7c1b"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1WTreeNode.html#0deb92963922074b6262f71e9fccd24a">ChildCountPolicy</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#970b7d1e5df403888e7c44750bf4b149">childCountPolicy</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the child count policy. <a href="#970b7d1e5df403888e7c44750bf4b149"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#ff37a6152a8195dd9b2a80e593d94298">setImagePack</a> (const std::string &url)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the image pack for this (sub)tree (<b>deprecated</b>). <a href="#ff37a6152a8195dd9b2a80e593d94298"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#af3d613cc461f4d9d39a71cd45bd155e">setLoadPolicy</a> (<a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bff">LoadPolicy</a> loadPolicy)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the load policy for this tree. <a href="#af3d613cc461f4d9d39a71cd45bd155e"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="948dd8443c0228268c1d75b825e66327"></a><!-- doxytag: member="Wt::WTreeNode::isExpanded" ref="948dd8443c0228268c1d75b825e66327" args="() const " -->
bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#948dd8443c0228268c1d75b825e66327">isExpanded</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns whether this node is expanded. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#60428cfc48b2a39550efc308b38406b2">setSelectable</a> (bool selectable)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allows this node to be selected. <a href="#60428cfc48b2a39550efc308b38406b2"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#413239e83c39e46fbb7d9525ac615241">isSelectable</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns if this node may be selected. <a href="#413239e83c39e46fbb7d9525ac615241"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#2d318888f997a3602743b9ec7a337a84">parentNode</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the parent node. <a href="#2d318888f997a3602743b9ec7a337a84"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#63d37fa9bb5a3ba8ea178b5f3737626d">setNodeVisible</a> (bool visible)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the visibility of the node itself. <a href="#63d37fa9bb5a3ba8ea178b5f3737626d"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#10e99f9db96ec2fc500927a5d50caafe">expand</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Expands this node. <a href="#10e99f9db96ec2fc500927a5d50caafe"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#43ed4fd057fac436d93bda4a6d1de7dd">collapse</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Collapses this node. <a href="#43ed4fd057fac436d93bda4a6d1de7dd"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1EventSignal.html">EventSignal</a>< <a class="el" href="classWt_1_1WMouseEvent.html">WMouseEvent</a> > & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#decb58d1334ac18d7e78e6e4d8e2e0e4">expanded</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signal emitted when the node is expanded by the user. <a href="#decb58d1334ac18d7e78e6e4d8e2e0e4"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1EventSignal.html">EventSignal</a>< <a class="el" href="classWt_1_1WMouseEvent.html">WMouseEvent</a> > & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#27b27bfa04d5414e058427ecfdc82309">collapsed</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signal emitted when the node is collapsed by the user. <a href="#27b27bfa04d5414e058427ecfdc82309"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1Signal.html">Signal</a>< bool > & </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#23a35eefeeda38afbca4cf59404c4806">selected</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signal that is emitted when the node is added or removed from the selection <a href="#23a35eefeeda38afbca4cf59404c4806"></a><br></td></tr>
<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#3e414fb2edce78eab5431db82aefed15">WTreeNode</a> (<a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> *parentNode=0)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Creates a tree node with empty <a class="el" href="classWt_1_1WTreeNode.html#e87e7590a98a4ccdbec6aeb49fd14025" title="Accesses the container widget that holds the label area.">labelArea()</a>. <a href="#3e414fb2edce78eab5431db82aefed15"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classWt_1_1WTableCell.html">WTableCell</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#e87e7590a98a4ccdbec6aeb49fd14025">labelArea</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Accesses the container widget that holds the label area. <a href="#e87e7590a98a4ccdbec6aeb49fd14025"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#9ab70c6020dbd9ea3204c625029a7a1b">populate</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Populates the node dynamically on loading. <a href="#9ab70c6020dbd9ea3204c625029a7a1b"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#ee388605958559d124616ce9dbfc7df5">populated</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns whether this node has already been populated. <a href="#ee388605958559d124616ce9dbfc7df5"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#4f19826594b5b080b0a436c474c31f61">expandable</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns whether this node can be expanded. <a href="#4f19826594b5b080b0a436c474c31f61"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#e4bb84bf91002f80941d2e890cab12cd">renderSelected</a> (bool selected)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Renders the node to be selected. <a href="#e4bb84bf91002f80941d2e890cab12cd"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#b79f1baedef8134c2d25b22a988f5c80">imagePack</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The image pack that is used for this tree node (<b>deprecated</b>). <a href="#b79f1baedef8134c2d25b22a988f5c80"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#ea7b6b2ba3d170fa57dfb7451f878a5d">descendantRemoved</a> (<a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> *node)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Reacts to the removal of a descendant node. <a href="#ea7b6b2ba3d170fa57dfb7451f878a5d"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#bfa02369517d2cc7cd3ee1d3839740e3">descendantAdded</a> (<a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> *node)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Reacts to the addition of a descendant node. <a href="#bfa02369517d2cc7cd3ee1d3839740e3"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#7cf5f24e57d19df0b8e01638c75c4bf7">doExpand</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The actual expand. <a href="#7cf5f24e57d19df0b8e01638c75c4bf7"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#98cc68ceed98e3e98145fe5a8129c066">doCollapse</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The actual collapse. <a href="#98cc68ceed98e3e98145fe5a8129c066"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#c0d0cbdfb0c8c0d493e70a6b40b40fc2">undoDoExpand</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Undo method for <a class="el" href="classWt_1_1WTreeNode.html#98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> stateless implementation. <a href="#c0d0cbdfb0c8c0d493e70a6b40b40fc2"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#67cd4a5c8169919e1e1feadc1cab7ae3">undoDoCollapse</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Undo method for <a class="el" href="classWt_1_1WTreeNode.html#98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> stateless implementation. <a href="#67cd4a5c8169919e1e1feadc1cab7ae3"></a><br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A single node in a tree.
<p>
A tree list is constructed by combining several tree node objects in a tree hierarchy, by passing the parent tree node as the last argument in the child node constructor, or by using <a class="el" href="classWt_1_1WTreeNode.html#deb2bd7c946ef9c7bb5b72b3f88453a6" title="Adds a child node.">addChildNode()</a>, to add a child to its parent.<p>
Each tree node has a label, and optionally a label icon pair. The icon pair offers the capability to show a different icon depending on the state of the node (expanded or collapsed). When the node has any children, a child count may be displayed next to the label using <a class="el" href="classWt_1_1WTreeNode.html#5a625b5a94386386dabd36277d5f7c1b" title="Configures how and when the child count should be displayed.">setChildCountPolicy()</a>.<p>
Expanding a tree node it will collapse all its children, so that a user may collapse/expand a node as a short-cut to collapsing all children.<p>
The treenode provides several policies to communicate the current contents of the tree to the client (if possible): <ul>
<li>
<a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bfff771c90906d73ed5eb1e6728366241e1" title="Pre-load all child nodes.">WTreeNode::PreLoading</a>: the entire tree is transmitted to the client, and all tree navigation requires no further communication. </li>
<li>
<a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bff4a962a514c531fb52c5958f61950ff3e" title="Load-on-demand of child nodes.">WTreeNode::LazyLoading</a>: only the minimum is transmitted to the client. When expanding a node for the first time, only then it is transmitted to the client, and this may thus have some latency. </li>
<li>
<a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bff387323cbdc8efd12ef6bf8553876c011" title="Pre-load one level of child nodes.">WTreeNode::NextLevelLoading</a>: all leafs of visible children are transmitted, but not their children. This provides a good trade-off between bandwith use and interactivity, since expanding any tree node will happen instantly, and at the same time trigger some communication in the back-ground to load the next level of invisible nodes. </li>
</ul>
<p>
The default policy is <a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bff4a962a514c531fb52c5958f61950ff3e" title="Load-on-demand of child nodes.">WTreeNode::LazyLoading</a>. Another load policy may be specified using <a class="el" href="classWt_1_1WTreeNode.html#af3d613cc461f4d9d39a71cd45bd155e" title="Sets the load policy for this tree.">setLoadPolicy()</a> on the root node and before adding any children. The load policy is inherited by all children in the tree.<p>
There are a few scenarios where it makes sense to specialize the WTreeNode class. One scenario is create a tree that is populated dynamically while browsing. For this purpose you should reimplement the <a class="el" href="classWt_1_1WTreeNode.html#9ab70c6020dbd9ea3204c625029a7a1b" title="Populates the node dynamically on loading.">populate()</a> method, whose default implementation does nothing. This method is called when 'loading' the node. The exact moment for loading a treenode depends on the LoadPolicy.<p>
A second scenario that is if you want to customize the look of the tree label (see <a class="el" href="classWt_1_1WTreeNode.html#e87e7590a98a4ccdbec6aeb49fd14025" title="Accesses the container widget that holds the label area.">labelArea()</a>) or if you want to modify or augment the event collapse/expand event handling (see <a class="el" href="classWt_1_1WTreeNode.html#7cf5f24e57d19df0b8e01638c75c4bf7" title="The actual expand.">doExpand()</a> and <a class="el" href="classWt_1_1WTreeNode.html#98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a>).<p>
See <a class="el" href="classWt_1_1WTree.html" title="A widget that represents a navigatable tree.">WTree</a> for a usage example.<p>
<h3>CSS</h3>
<p>
The tree is styled by the current CSS theme. The look can be overridden using the <code>Wt-tree</code> CSS class and the following selectors:<p>
<div class="fragment"><pre class="fragment">
.Wt-tree .Wt-trunk : vertical line, trunk
.Wt-tree .Wt-end : vertical line, last item
.Wt-tree .Wt-collapse : collapse icon (img *)
.Wt-tree .Wt-expand : expand icon (img *)
.Wt-tree .Wt-noexpand : leaf icon
.Wt-tree .Wt-label : the node label
.Wt-tree .Wt-childcount : the node child count
</pre></div> * The collapse and expand icons are fetched themselves as images, <code>nav-plus.gif</code> and <code>nav-minus.gif</code>.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTree.html" title="A widget that represents a navigatable tree.">WTree</a>, <a class="el" href="classWt_1_1WTreeTableNode.html" title="A specialized tree node which allows additional data to be associated with each node...">WTreeTableNode</a> </dd></dl>
<hr><h2>Member Enumeration Documentation</h2>
<a class="anchor" name="51c02b42c069e61a269fde598b9a1bff"></a><!-- doxytag: member="Wt::WTreeNode::LoadPolicy" ref="51c02b42c069e61a269fde598b9a1bff" args="" -->
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<td class="memname">enum <a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bff">Wt::WTreeNode::LoadPolicy</a> </td>
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<p>
An enumeration for the policy to load children.
<p>
<dl compact><dt><b>Enumerator: </b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" name="51c02b42c069e61a269fde598b9a1bff4a962a514c531fb52c5958f61950ff3e"></a><!-- doxytag: member="LazyLoading" ref="51c02b42c069e61a269fde598b9a1bff4a962a514c531fb52c5958f61950ff3e" args="" -->LazyLoading</em> </td><td>
Load-on-demand of child nodes. </td></tr>
<tr><td valign="top"><em><a class="anchor" name="51c02b42c069e61a269fde598b9a1bfff771c90906d73ed5eb1e6728366241e1"></a><!-- doxytag: member="PreLoading" ref="51c02b42c069e61a269fde598b9a1bfff771c90906d73ed5eb1e6728366241e1" args="" -->PreLoading</em> </td><td>
Pre-load all child nodes. </td></tr>
<tr><td valign="top"><em><a class="anchor" name="51c02b42c069e61a269fde598b9a1bff387323cbdc8efd12ef6bf8553876c011"></a><!-- doxytag: member="NextLevelLoading" ref="51c02b42c069e61a269fde598b9a1bff387323cbdc8efd12ef6bf8553876c011" args="" -->NextLevelLoading</em> </td><td>
Pre-load one level of child nodes. </td></tr>
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<a class="anchor" name="0deb92963922074b6262f71e9fccd24a"></a><!-- doxytag: member="Wt::WTreeNode::ChildCountPolicy" ref="0deb92963922074b6262f71e9fccd24a" args="" -->
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<td class="memname">enum <a class="el" href="classWt_1_1WTreeNode.html#0deb92963922074b6262f71e9fccd24a">Wt::WTreeNode::ChildCountPolicy</a> </td>
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<p>
An enumeration for the policy to display the child count.
<p>
<dl compact><dt><b>Enumerator: </b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" name="0deb92963922074b6262f71e9fccd24a3b31c2b770a9acffa43daedf402df6cd"></a><!-- doxytag: member="Disabled" ref="0deb92963922074b6262f71e9fccd24a3b31c2b770a9acffa43daedf402df6cd" args="" -->Disabled</em> </td><td>
Do not display a child count. </td></tr>
<tr><td valign="top"><em><a class="anchor" name="0deb92963922074b6262f71e9fccd24aebbfd35e39c920c5f2dbe74380e3abce"></a><!-- doxytag: member="Enabled" ref="0deb92963922074b6262f71e9fccd24aebbfd35e39c920c5f2dbe74380e3abce" args="" -->Enabled</em> </td><td>
Always display a child count. </td></tr>
<tr><td valign="top"><em><a class="anchor" name="0deb92963922074b6262f71e9fccd24a256625b6187b3107b1eb201c1758a793"></a><!-- doxytag: member="Lazy" ref="0deb92963922074b6262f71e9fccd24a256625b6187b3107b1eb201c1758a793" args="" -->Lazy</em> </td><td>
Only display a child count when the node is populated. </td></tr>
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</dl>
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</div><p>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="169f429e0f0e1fe6d0874f9db72d041a"></a><!-- doxytag: member="Wt::WTreeNode::WTreeNode" ref="169f429e0f0e1fe6d0874f9db72d041a" args="(const WString &labelText, WIconPair *labelIcon=0, WTreeNode *parentNode=0)" -->
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<td class="memname">Wt::WTreeNode::WTreeNode </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classWt_1_1WString.html">WString</a> & </td>
<td class="paramname"> <em>labelText</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classWt_1_1WIconPair.html">WIconPair</a> * </td>
<td class="paramname"> <em>labelIcon</em> = <code>0</code>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"><a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> * </td>
<td class="paramname"> <em>parentNode</em> = <code>0</code></td><td> </td>
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Creates a tree node with the given label.
<p>
The labelIcon, if specified, will appear just before the label and its state reflect the expand/collapse state of the node.<p>
The node is initialized to be collapsed.
</div>
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<a class="anchor" name="3e414fb2edce78eab5431db82aefed15"></a><!-- doxytag: member="Wt::WTreeNode::WTreeNode" ref="3e414fb2edce78eab5431db82aefed15" args="(WTreeNode *parentNode=0)" -->
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<td class="memname">Wt::WTreeNode::WTreeNode </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> * </td>
<td class="paramname"> <em>parentNode</em> = <code>0</code> </td>
<td> ) </td>
<td><code> [protected]</code></td>
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Creates a tree node with empty <a class="el" href="classWt_1_1WTreeNode.html#e87e7590a98a4ccdbec6aeb49fd14025" title="Accesses the container widget that holds the label area.">labelArea()</a>.
<p>
This tree node has no label or labelicon, and is therefore ideally suited to provide a custom look.
</div>
</div><p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="1a2bec02861430af0a8b80dd9e84324e"></a><!-- doxytag: member="Wt::WTreeNode::displayedChildCount" ref="1a2bec02861430af0a8b80dd9e84324e" args="() const " -->
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<td class="memname">int Wt::WTreeNode::displayedChildCount </td>
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<p>
Returns the number of children that should be displayed.
<p>
This is used to display the count in the count label. The default implementation simply returns <a class="el" href="classWt_1_1WTreeNode.html#a0f780835958f27b08fed66c1e4461e7" title="Returns the list of children.">childNodes()</a>.size().
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</div><p>
<a class="anchor" name="5a625b5a94386386dabd36277d5f7c1b"></a><!-- doxytag: member="Wt::WTreeNode::setChildCountPolicy" ref="5a625b5a94386386dabd36277d5f7c1b" args="(ChildCountPolicy policy)" -->
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<td class="memname">void Wt::WTreeNode::setChildCountPolicy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WTreeNode.html#0deb92963922074b6262f71e9fccd24a">ChildCountPolicy</a> </td>
<td class="paramname"> <em>policy</em> </td>
<td> ) </td>
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Configures how and when the child count should be displayed.
<p>
By default, no child count indication is disabled (this is the behaviour since 2.1.1). Use this method to enable child count indications.<p>
The child count policy is inherited by all children in the tree.
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<a class="anchor" name="970b7d1e5df403888e7c44750bf4b149"></a><!-- doxytag: member="Wt::WTreeNode::childCountPolicy" ref="970b7d1e5df403888e7c44750bf4b149" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WTreeNode.html#0deb92963922074b6262f71e9fccd24a">ChildCountPolicy</a> Wt::WTreeNode::childCountPolicy </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [inline]</code></td>
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<p>
Returns the child count policy.
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#5a625b5a94386386dabd36277d5f7c1b" title="Configures how and when the child count should be displayed.">setChildCountPolicy(ChildCountPolicy policy)</a> </dd></dl>
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<a class="anchor" name="ff37a6152a8195dd9b2a80e593d94298"></a><!-- doxytag: member="Wt::WTreeNode::setImagePack" ref="ff37a6152a8195dd9b2a80e593d94298" args="(const std::string &url)" -->
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<td class="memname">void Wt::WTreeNode::setImagePack </td>
<td>(</td>
<td class="paramtype">const std::string & </td>
<td class="paramname"> <em>url</em> </td>
<td> ) </td>
<td></td>
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<p>
Sets the image pack for this (sub)tree (<b>deprecated</b>).
<p>
<dl compact><dt><b><a class="el" href="deprecated.html#_deprecated000021">Deprecated:</a></b></dt><dd>This method does not do anything since Wt 3.1.1, as the tree is now styled based on the current CSS theme. </dd></dl>
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<a class="anchor" name="af3d613cc461f4d9d39a71cd45bd155e"></a><!-- doxytag: member="Wt::WTreeNode::setLoadPolicy" ref="af3d613cc461f4d9d39a71cd45bd155e" args="(LoadPolicy loadPolicy)" -->
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<td class="memname">void Wt::WTreeNode::setLoadPolicy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WTreeNode.html#51c02b42c069e61a269fde598b9a1bff">LoadPolicy</a> </td>
<td class="paramname"> <em>loadPolicy</em> </td>
<td> ) </td>
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<p>
Sets the load policy for this tree.
<p>
This may only be set on the root of a tree, and before adding any children.
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<a class="anchor" name="60428cfc48b2a39550efc308b38406b2"></a><!-- doxytag: member="Wt::WTreeNode::setSelectable" ref="60428cfc48b2a39550efc308b38406b2" args="(bool selectable)" -->
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<td class="memname">void Wt::WTreeNode::setSelectable </td>
<td>(</td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>selectable</em> </td>
<td> ) </td>
<td><code> [virtual]</code></td>
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<p>
Allows this node to be selected.
<p>
By default, all nodes may be selected.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#413239e83c39e46fbb7d9525ac615241" title="Returns if this node may be selected.">isSelectable()</a>, <a class="el" href="classWt_1_1WTree.html#52c770a65ac3f4c2493f714271a5133a" title="Selects or unselect the given node.">WTree::select(WTreeNode *, bool)</a> </dd></dl>
<p>Reimplemented from <a class="el" href="classWt_1_1WCompositeWidget.html#1cf4a59e433df7c28e7917a5e03fdac1">Wt::WCompositeWidget</a>.</p>
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<a class="anchor" name="413239e83c39e46fbb7d9525ac615241"></a><!-- doxytag: member="Wt::WTreeNode::isSelectable" ref="413239e83c39e46fbb7d9525ac615241" args="() const " -->
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<td class="memname">virtual bool Wt::WTreeNode::isSelectable </td>
<td>(</td>
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<td> ) </td>
<td> const<code> [inline, virtual]</code></td>
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<p>
Returns if this node may be selected.
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#60428cfc48b2a39550efc308b38406b2" title="Allows this node to be selected.">setSelectable(bool)</a> </dd></dl>
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<a class="anchor" name="2d318888f997a3602743b9ec7a337a84"></a><!-- doxytag: member="Wt::WTreeNode::parentNode" ref="2d318888f997a3602743b9ec7a337a84" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> * Wt::WTreeNode::parentNode </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const</td>
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<p>
Returns the parent node.
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a0f780835958f27b08fed66c1e4461e7" title="Returns the list of children.">childNodes()</a> </dd></dl>
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<a class="anchor" name="63d37fa9bb5a3ba8ea178b5f3737626d"></a><!-- doxytag: member="Wt::WTreeNode::setNodeVisible" ref="63d37fa9bb5a3ba8ea178b5f3737626d" args="(bool visible)" -->
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<td class="memname">void Wt::WTreeNode::setNodeVisible </td>
<td>(</td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>visible</em> </td>
<td> ) </td>
<td></td>
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<p>
Sets the visibility of the node itself.
<p>
If <code>false</code>, then the node itself is not displayed, but only its children. This is typically used to hide the root node of a tree.
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<a class="anchor" name="10e99f9db96ec2fc500927a5d50caafe"></a><!-- doxytag: member="Wt::WTreeNode::expand" ref="10e99f9db96ec2fc500927a5d50caafe" args="()" -->
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<td class="memname">void Wt::WTreeNode::expand </td>
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<td class="paramname"> </td>
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<p>
Expands this node.
<p>
Besides the actual expansion of the node, this may also trigger the loading and population of the node children, or of the children's children.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#43ed4fd057fac436d93bda4a6d1de7dd" title="Collapses this node.">collapse()</a> <p>
<a class="el" href="classWt_1_1WTreeNode.html#7cf5f24e57d19df0b8e01638c75c4bf7" title="The actual expand.">doExpand()</a> </dd></dl>
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<a class="anchor" name="43ed4fd057fac436d93bda4a6d1de7dd"></a><!-- doxytag: member="Wt::WTreeNode::collapse" ref="43ed4fd057fac436d93bda4a6d1de7dd" args="()" -->
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<td class="memname">void Wt::WTreeNode::collapse </td>
<td>(</td>
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<p>
Collapses this node.
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#10e99f9db96ec2fc500927a5d50caafe" title="Expands this node.">expand()</a> <p>
<a class="el" href="classWt_1_1WTreeNode.html#98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> </dd></dl>
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<a class="anchor" name="decb58d1334ac18d7e78e6e4d8e2e0e4"></a><!-- doxytag: member="Wt::WTreeNode::expanded" ref="decb58d1334ac18d7e78e6e4d8e2e0e4" args="()" -->
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<td class="memname"><a class="el" href="classWt_1_1EventSignal.html">EventSignal</a>< <a class="el" href="classWt_1_1WMouseEvent.html">WMouseEvent</a> > & Wt::WTreeNode::expanded </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
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<p>
Signal emitted when the node is expanded by the user.
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#27b27bfa04d5414e058427ecfdc82309" title="Signal emitted when the node is collapsed by the user.">collapsed()</a> </dd></dl>
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<a class="anchor" name="27b27bfa04d5414e058427ecfdc82309"></a><!-- doxytag: member="Wt::WTreeNode::collapsed" ref="27b27bfa04d5414e058427ecfdc82309" args="()" -->
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<td class="memname"><a class="el" href="classWt_1_1EventSignal.html">EventSignal</a>< <a class="el" href="classWt_1_1WMouseEvent.html">WMouseEvent</a> > & Wt::WTreeNode::collapsed </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td></td>
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<p>
Signal emitted when the node is collapsed by the user.
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#decb58d1334ac18d7e78e6e4d8e2e0e4" title="Signal emitted when the node is expanded by the user.">expanded()</a> </dd></dl>
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<a class="anchor" name="23a35eefeeda38afbca4cf59404c4806"></a><!-- doxytag: member="Wt::WTreeNode::selected" ref="23a35eefeeda38afbca4cf59404c4806" args="()" -->
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<td class="memname"><a class="el" href="classWt_1_1Signal.html">Signal</a><bool>& Wt::WTreeNode::selected </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [inline]</code></td>
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<p>
Signal that is emitted when the node is added or removed from the selection
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTree.html#103603f639e07f83d1a75e293b70966d" title="Signal that is emitted when the selection changes.">WTree::itemSelectionChanged</a> </dd></dl>
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<a class="anchor" name="e87e7590a98a4ccdbec6aeb49fd14025"></a><!-- doxytag: member="Wt::WTreeNode::labelArea" ref="e87e7590a98a4ccdbec6aeb49fd14025" args="()" -->
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<td class="memname"><a class="el" href="classWt_1_1WTableCell.html">WTableCell</a> * Wt::WTreeNode::labelArea </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [protected]</code></td>
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</table>
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<p>
Accesses the container widget that holds the label area.
<p>
Use this to customize how the label should look like.
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<a class="anchor" name="9ab70c6020dbd9ea3204c625029a7a1b"></a><!-- doxytag: member="Wt::WTreeNode::populate" ref="9ab70c6020dbd9ea3204c625029a7a1b" args="()" -->
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<td class="memname">void Wt::WTreeNode::populate </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
</tr>
</table>
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<div class="memdoc">
<p>
Populates the node dynamically on loading.
<p>
Reimplement this method if you want to populate the widget dynamically, as the tree is being browsed and therefore loaded. This is only usefull with LazyLoading or NextLevelLoading strategies.
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</div><p>
<a class="anchor" name="ee388605958559d124616ce9dbfc7df5"></a><!-- doxytag: member="Wt::WTreeNode::populated" ref="ee388605958559d124616ce9dbfc7df5" args="() const " -->
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<td class="memname">bool Wt::WTreeNode::populated </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [inline, protected]</code></td>
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<p>
Returns whether this node has already been populated.
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#9ab70c6020dbd9ea3204c625029a7a1b" title="Populates the node dynamically on loading.">populate()</a> </dd></dl>
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<a class="anchor" name="4f19826594b5b080b0a436c474c31f61"></a><!-- doxytag: member="Wt::WTreeNode::expandable" ref="4f19826594b5b080b0a436c474c31f61" args="()" -->
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<td class="memname">bool Wt::WTreeNode::expandable </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
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<p>
Returns whether this node can be expanded.
<p>
The default implementation populates the node if necessary, and then checks if there are any child nodes.<p>
You may wish to reimplement this method if you reimplement <a class="el" href="classWt_1_1WTreeNode.html#9ab70c6020dbd9ea3204c625029a7a1b" title="Populates the node dynamically on loading.">populate()</a>, and you have a quick default for determining whether a node may be expanded (which does not require populating the node).<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#9ab70c6020dbd9ea3204c625029a7a1b" title="Populates the node dynamically on loading.">populate()</a> </dd></dl>
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</div><p>
<a class="anchor" name="e4bb84bf91002f80941d2e890cab12cd"></a><!-- doxytag: member="Wt::WTreeNode::renderSelected" ref="e4bb84bf91002f80941d2e890cab12cd" args="(bool selected)" -->
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<td class="memname">void Wt::WTreeNode::renderSelected </td>
<td>(</td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>selected</em> </td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
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<p>
Renders the node to be selected.
<p>
The default implementation changes the style class of the <a class="el" href="classWt_1_1WTreeNode.html#e87e7590a98a4ccdbec6aeb49fd14025" title="Accesses the container widget that holds the label area.">labelArea()</a> to "selected".
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<a class="anchor" name="b79f1baedef8134c2d25b22a988f5c80"></a><!-- doxytag: member="Wt::WTreeNode::imagePack" ref="b79f1baedef8134c2d25b22a988f5c80" args="() const " -->
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<td class="memname">std::string Wt::WTreeNode::imagePack </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td> const<code> [protected]</code></td>
</tr>
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<p>
The image pack that is used for this tree node (<b>deprecated</b>).
<p>
<dl compact><dt><b><a class="el" href="deprecated.html#_deprecated000022">Deprecated:</a></b></dt><dd>This method returns "" since Wt 3.1.1, as the image pack is no longer used in favour of the CSS themes. </dd></dl>
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<a class="anchor" name="ea7b6b2ba3d170fa57dfb7451f878a5d"></a><!-- doxytag: member="Wt::WTreeNode::descendantRemoved" ref="ea7b6b2ba3d170fa57dfb7451f878a5d" args="(WTreeNode *node)" -->
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<td class="memname">void Wt::WTreeNode::descendantRemoved </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> * </td>
<td class="paramname"> <em>node</em> </td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
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<p>
Reacts to the removal of a descendant node.
<p>
Reimplement this method if you wish to react on the removal of a descendant node. The default implementation simply propagates the event to the parent.
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<a class="anchor" name="bfa02369517d2cc7cd3ee1d3839740e3"></a><!-- doxytag: member="Wt::WTreeNode::descendantAdded" ref="bfa02369517d2cc7cd3ee1d3839740e3" args="(WTreeNode *node)" -->
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<td class="memname">void Wt::WTreeNode::descendantAdded </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> * </td>
<td class="paramname"> <em>node</em> </td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
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<p>
Reacts to the addition of a descendant node.
<p>
Reimplement this method if you wish to react on the addition of a descendant node. The default implementation simply propagates the event to the parent.
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<a class="anchor" name="7cf5f24e57d19df0b8e01638c75c4bf7"></a><!-- doxytag: member="Wt::WTreeNode::doExpand" ref="7cf5f24e57d19df0b8e01638c75c4bf7" args="()" -->
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<td class="memname">void Wt::WTreeNode::doExpand </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
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<p>
The actual expand.
<p>
This method, which is implemented as a stateless slot, performs the actual expansion of the node.<p>
You may want to reimplement this function (and <a class="el" href="classWt_1_1WTreeNode.html#c0d0cbdfb0c8c0d493e70a6b40b40fc2" title="Undo method for doCollapse() stateless implementation.">undoDoExpand()</a>) if you wish to do additional things on node expansion.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> <p>
<a class="el" href="classWt_1_1WTreeNode.html#10e99f9db96ec2fc500927a5d50caafe" title="Expands this node.">expand()</a> </dd></dl>
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<a class="anchor" name="98cc68ceed98e3e98145fe5a8129c066"></a><!-- doxytag: member="Wt::WTreeNode::doCollapse" ref="98cc68ceed98e3e98145fe5a8129c066" args="()" -->
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<td class="memname">void Wt::WTreeNode::doCollapse </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
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<p>
The actual collapse.
<p>
This method, which is implemented as a stateless slot, performs the actual collapse of the node.<p>
You may want to reimplement this function (and <a class="el" href="classWt_1_1WTreeNode.html#67cd4a5c8169919e1e1feadc1cab7ae3" title="Undo method for doCollapse() stateless implementation.">undoDoCollapse()</a>) if you wish to do additional things on node expansion.<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#7cf5f24e57d19df0b8e01638c75c4bf7" title="The actual expand.">doExpand()</a> <p>
<a class="el" href="classWt_1_1WTreeNode.html#43ed4fd057fac436d93bda4a6d1de7dd" title="Collapses this node.">collapse()</a> </dd></dl>
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<a class="anchor" name="c0d0cbdfb0c8c0d493e70a6b40b40fc2"></a><!-- doxytag: member="Wt::WTreeNode::undoDoExpand" ref="c0d0cbdfb0c8c0d493e70a6b40b40fc2" args="()" -->
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<td class="memname">void Wt::WTreeNode::undoDoExpand </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
</tr>
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<p>
Undo method for <a class="el" href="classWt_1_1WTreeNode.html#98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> stateless implementation.
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> </dd></dl>
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<a class="anchor" name="67cd4a5c8169919e1e1feadc1cab7ae3"></a><!-- doxytag: member="Wt::WTreeNode::undoDoCollapse" ref="67cd4a5c8169919e1e1feadc1cab7ae3" args="()" -->
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<td class="memname">void Wt::WTreeNode::undoDoCollapse </td>
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Undo method for <a class="el" href="classWt_1_1WTreeNode.html#98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> stateless implementation.
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<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#7cf5f24e57d19df0b8e01638c75c4bf7" title="The actual expand.">doExpand()</a> </dd></dl>
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Generated on Fri Mar 26 17:12:07 2010 for <a href="http://www.webtoolkit.eu/wt/">Wt</a> by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6</small></address>
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