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 <span id="projectnumber">3.2.1</span>
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<li class="navelem"><a class="el" href="namespaceWt.html">Wt</a> </li>
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<a href="#pub-types">Public Types</a> |
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<div class="title">Wt::WTreeNode Class Reference</div> </div>
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<!-- doxytag: class="Wt::WTreeNode" --><!-- doxytag: inherits="Wt::WCompositeWidget" -->
<p>A single node in a tree.
<a href="classWt_1_1WTreeNode.html#details">More...</a></p>
<p><code>#include <Wt/WTreeNode></code></p>
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Inheritance diagram for Wt::WTreeNode:</div>
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<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="15,304,159,331"/><area shape="rect" href="classWt_1_1WCompositeWidget.html" title="A widget that hides the implementation of composite widgets." alt="" coords="5,155,168,181"/><area shape="rect" href="classWt_1_1WWidget.html" title="The abstract base class for a user-interface component." alt="" coords="37,80,136,107"/><area shape="rect" href="classWt_1_1WObject.html" title="A base class for objects that participate in the signal/slot system." alt="" coords="39,5,135,32"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="classWt_1_1WTreeNode-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a51c02b42c069e61a269fde598b9a1bff">LoadPolicy</a> { <a class="el" href="classWt_1_1WTreeNode.html#a51c02b42c069e61a269fde598b9a1bffa4a962a514c531fb52c5958f61950ff3e">LazyLoading</a>,
<a class="el" href="classWt_1_1WTreeNode.html#a51c02b42c069e61a269fde598b9a1bffaf771c90906d73ed5eb1e6728366241e1">PreLoading</a>,
<a class="el" href="classWt_1_1WTreeNode.html#a51c02b42c069e61a269fde598b9a1bffa387323cbdc8efd12ef6bf8553876c011">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#a51c02b42c069e61a269fde598b9a1bff">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a0deb92963922074b6262f71e9fccd24a">ChildCountPolicy</a> { <a class="el" href="classWt_1_1WTreeNode.html#a0deb92963922074b6262f71e9fccd24aa3b31c2b770a9acffa43daedf402df6cd">Disabled</a>,
<a class="el" href="classWt_1_1WTreeNode.html#a0deb92963922074b6262f71e9fccd24aaebbfd35e39c920c5f2dbe74380e3abce">Enabled</a>,
<a class="el" href="classWt_1_1WTreeNode.html#a0deb92963922074b6262f71e9fccd24aa256625b6187b3107b1eb201c1758a793">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#a0deb92963922074b6262f71e9fccd24a">More...</a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a169f429e0f0e1fe6d0874f9db72d041a">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="#a169f429e0f0e1fe6d0874f9db72d041a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a1ec9b14cd8388631acbb3e82649d0d67"></a><!-- doxytag: member="Wt::WTreeNode::~WTreeNode" ref="a1ec9b14cd8388631acbb3e82649d0d67" args="()" -->
 </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a1ec9b14cd8388631acbb3e82649d0d67">~WTreeNode</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classWt_1_1WTree.html">WTree</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#adefe7d8365d9e64bde8e12cf0a1fe1c3">tree</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the tree. <a href="#adefe7d8365d9e64bde8e12cf0a1fe1c3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a32c24104359b595cbaf914e35accb3b4"></a><!-- doxytag: member="Wt::WTreeNode::label" ref="a32c24104359b595cbaf914e35accb3b4" 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#a32c24104359b595cbaf914e35accb3b4">label</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the label. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a2095a273249da81688699ff9750ea2a4"></a><!-- doxytag: member="Wt::WTreeNode::labelIcon" ref="a2095a273249da81688699ff9750ea2a4" 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#a2095a273249da81688699ff9750ea2a4">labelIcon</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the label icon. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a906d6afe249fbebd9735dc9c9ca11166"></a><!-- doxytag: member="Wt::WTreeNode::setLabelIcon" ref="a906d6afe249fbebd9735dc9c9ca11166" args="(WIconPair *labelIcon)" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a906d6afe249fbebd9735dc9c9ca11166">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" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a460f47f625133c99c622c71309bdc373">insertChildNode</a> (int index, <a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> *node)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Inserts a child node. <a href="#a460f47f625133c99c622c71309bdc373"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#adeb2bd7c946ef9c7bb5b72b3f88453a6">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. <a href="#adeb2bd7c946ef9c7bb5b72b3f88453a6"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a6513443612d2456a69610e744bc629f4">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. <a href="#a6513443612d2456a69610e744bc629f4"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa0f780835958f27b08fed66c1e4461e7"></a><!-- doxytag: member="Wt::WTreeNode::childNodes" ref="aa0f780835958f27b08fed66c1e4461e7" 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#aa0f780835958f27b08fed66c1e4461e7">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" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a1a2bec02861430af0a8b80dd9e84324e">displayedChildCount</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the number of children that should be displayed. <a href="#a1a2bec02861430af0a8b80dd9e84324e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a5a625b5a94386386dabd36277d5f7c1b">setChildCountPolicy</a> (<a class="el" href="classWt_1_1WTreeNode.html#a0deb92963922074b6262f71e9fccd24a">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="#a5a625b5a94386386dabd36277d5f7c1b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classWt_1_1WTreeNode.html#a0deb92963922074b6262f71e9fccd24a">ChildCountPolicy</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a970b7d1e5df403888e7c44750bf4b149">childCountPolicy</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the child count policy. <a href="#a970b7d1e5df403888e7c44750bf4b149"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#aff37a6152a8195dd9b2a80e593d94298">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="#aff37a6152a8195dd9b2a80e593d94298"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#aaf3d613cc461f4d9d39a71cd45bd155e">setLoadPolicy</a> (<a class="el" href="classWt_1_1WTreeNode.html#a51c02b42c069e61a269fde598b9a1bff">LoadPolicy</a> loadPolicy)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the load policy for this tree. <a href="#aaf3d613cc461f4d9d39a71cd45bd155e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a948dd8443c0228268c1d75b825e66327"></a><!-- doxytag: member="Wt::WTreeNode::isExpanded" ref="a948dd8443c0228268c1d75b825e66327" args="() const " -->
bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a948dd8443c0228268c1d75b825e66327">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" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a60428cfc48b2a39550efc308b38406b2">setSelectable</a> (bool selectable)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Allows this node to be selected. <a href="#a60428cfc48b2a39550efc308b38406b2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a413239e83c39e46fbb7d9525ac615241">isSelectable</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns if this node may be selected. <a href="#a413239e83c39e46fbb7d9525ac615241"></a><br/></td></tr>
<tr><td class="memItemLeft" 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#abebb8dd92b2470901a3c9fb36e315c62">parentNode</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the parent node. <a href="#abebb8dd92b2470901a3c9fb36e315c62"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a63d37fa9bb5a3ba8ea178b5f3737626d">setNodeVisible</a> (bool visible)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets the visibility of the node itself. <a href="#a63d37fa9bb5a3ba8ea178b5f3737626d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a5594488be1f49052915b4ecc840f44ce">setChildrenDecorated</a> (bool decorated)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets whether this node's children are decorated. <a href="#a5594488be1f49052915b4ecc840f44ce"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a85e7232623373ad75a5b5bbdbbf734ca">setInteractive</a> (bool interactive)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets whether this node is interactive. <a href="#a85e7232623373ad75a5b5bbdbbf734ca"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a10e99f9db96ec2fc500927a5d50caafe">expand</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Expands this node. <a href="#a10e99f9db96ec2fc500927a5d50caafe"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a43ed4fd057fac436d93bda4a6d1de7dd">collapse</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Collapses this node. <a href="#a43ed4fd057fac436d93bda4a6d1de7dd"></a><br/></td></tr>
<tr><td class="memItemLeft" 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#adecb58d1334ac18d7e78e6e4d8e2e0e4">expanded</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signal emitted when the node is expanded by the user. <a href="#adecb58d1334ac18d7e78e6e4d8e2e0e4"></a><br/></td></tr>
<tr><td class="memItemLeft" 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#a27b27bfa04d5414e058427ecfdc82309">collapsed</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Signal emitted when the node is collapsed by the user. <a href="#a27b27bfa04d5414e058427ecfdc82309"></a><br/></td></tr>
<tr><td class="memItemLeft" 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#a23a35eefeeda38afbca4cf59404c4806">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="#a23a35eefeeda38afbca4cf59404c4806"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a3e414fb2edce78eab5431db82aefed15">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#ae87e7590a98a4ccdbec6aeb49fd14025" title="Accesses the container widget that holds the label area.">labelArea()</a>. <a href="#a3e414fb2edce78eab5431db82aefed15"></a><br/></td></tr>
<tr><td class="memItemLeft" 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#ae87e7590a98a4ccdbec6aeb49fd14025">labelArea</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Accesses the container widget that holds the label area. <a href="#ae87e7590a98a4ccdbec6aeb49fd14025"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a9ab70c6020dbd9ea3204c625029a7a1b">populate</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Populates the node dynamically on loading. <a href="#a9ab70c6020dbd9ea3204c625029a7a1b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#aee388605958559d124616ce9dbfc7df5">populated</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns whether this node has already been populated. <a href="#aee388605958559d124616ce9dbfc7df5"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a4f19826594b5b080b0a436c474c31f61">expandable</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns whether this node can be expanded. <a href="#a4f19826594b5b080b0a436c474c31f61"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#ae4bb84bf91002f80941d2e890cab12cd">renderSelected</a> (bool selected)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Renders the node to be selected. <a href="#ae4bb84bf91002f80941d2e890cab12cd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">std::string </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#ab79f1baedef8134c2d25b22a988f5c80">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="#ab79f1baedef8134c2d25b22a988f5c80"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#aea7b6b2ba3d170fa57dfb7451f878a5d">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="#aea7b6b2ba3d170fa57dfb7451f878a5d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#abfa02369517d2cc7cd3ee1d3839740e3">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="#abfa02369517d2cc7cd3ee1d3839740e3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a7cf5f24e57d19df0b8e01638c75c4bf7">doExpand</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The actual expand. <a href="#a7cf5f24e57d19df0b8e01638c75c4bf7"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a98cc68ceed98e3e98145fe5a8129c066">doCollapse</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The actual collapse. <a href="#a98cc68ceed98e3e98145fe5a8129c066"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#ac0d0cbdfb0c8c0d493e70a6b40b40fc2">undoDoExpand</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Undo method for <a class="el" href="classWt_1_1WTreeNode.html#a98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> stateless implementation. <a href="#ac0d0cbdfb0c8c0d493e70a6b40b40fc2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a67cd4a5c8169919e1e1feadc1cab7ae3">undoDoCollapse</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Undo method for <a class="el" href="classWt_1_1WTreeNode.html#a98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> stateless implementation. <a href="#a67cd4a5c8169919e1e1feadc1cab7ae3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a973cac84f4187d31b2df0f73c7bc4c9c"></a><!-- doxytag: member="Wt::WTreeNode::expandIcon" ref="a973cac84f4187d31b2df0f73c7bc4c9c" args="()" -->
<a class="el" href="classWt_1_1WIconPair.html">WIconPair</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classWt_1_1WTreeNode.html#a973cac84f4187d31b2df0f73c7bc4c9c">expandIcon</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Accesses the icon pair that allows expansion of the tree node. <br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>A single node in a tree. </p>
<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#adeb2bd7c946ef9c7bb5b72b3f88453a6" title="Adds a child node.">addChildNode()</a>, to add a child to its parent.</p>
<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#a5a625b5a94386386dabd36277d5f7c1b" title="Configures how and when the child count should be displayed.">setChildCountPolicy()</a>.</p>
<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>
<p>The treenode provides several policies to communicate the current contents of the tree to the client (if possible): </p>
<ul>
<li>
<a class="el" href="classWt_1_1WTreeNode.html#a51c02b42c069e61a269fde598b9a1bffaf771c90906d73ed5eb1e6728366241e1" 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#a51c02b42c069e61a269fde598b9a1bffa4a962a514c531fb52c5958f61950ff3e" 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#a51c02b42c069e61a269fde598b9a1bffa387323cbdc8efd12ef6bf8553876c011" 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#a51c02b42c069e61a269fde598b9a1bffa4a962a514c531fb52c5958f61950ff3e" 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#aaf3d613cc461f4d9d39a71cd45bd155e" 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>
<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#a9ab70c6020dbd9ea3204c625029a7a1b" 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>
<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#ae87e7590a98a4ccdbec6aeb49fd14025" 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#a7cf5f24e57d19df0b8e01638c75c4bf7" title="The actual expand.">doExpand()</a> and <a class="el" href="classWt_1_1WTreeNode.html#a98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a>).</p>
<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
.Wt-tree .Wt-node : the node's table row
</pre></div><p> * 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"><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>
</div><hr/><h2>Member Enumeration Documentation</h2>
<a class="anchor" id="a0deb92963922074b6262f71e9fccd24a"></a><!-- doxytag: member="Wt::WTreeNode::ChildCountPolicy" ref="a0deb92963922074b6262f71e9fccd24a" args="" -->
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<td class="memname">enum <a class="el" href="classWt_1_1WTreeNode.html#a0deb92963922074b6262f71e9fccd24a">Wt::WTreeNode::ChildCountPolicy</a></td>
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<div class="memdoc">
<p>An enumeration for the policy to display the child count. </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="a0deb92963922074b6262f71e9fccd24aa3b31c2b770a9acffa43daedf402df6cd"></a><!-- doxytag: member="Disabled" ref="a0deb92963922074b6262f71e9fccd24aa3b31c2b770a9acffa43daedf402df6cd" args="" -->Disabled</em> </td><td>
<p>Do not display a child count. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a0deb92963922074b6262f71e9fccd24aaebbfd35e39c920c5f2dbe74380e3abce"></a><!-- doxytag: member="Enabled" ref="a0deb92963922074b6262f71e9fccd24aaebbfd35e39c920c5f2dbe74380e3abce" args="" -->Enabled</em> </td><td>
<p>Always display a child count. </p>
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<tr><td valign="top"><em><a class="anchor" id="a0deb92963922074b6262f71e9fccd24aa256625b6187b3107b1eb201c1758a793"></a><!-- doxytag: member="Lazy" ref="a0deb92963922074b6262f71e9fccd24aa256625b6187b3107b1eb201c1758a793" args="" -->Lazy</em> </td><td>
<p>Only display a child count when the node is populated. </p>
</td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="a51c02b42c069e61a269fde598b9a1bff"></a><!-- doxytag: member="Wt::WTreeNode::LoadPolicy" ref="a51c02b42c069e61a269fde598b9a1bff" args="" -->
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<td class="memname">enum <a class="el" href="classWt_1_1WTreeNode.html#a51c02b42c069e61a269fde598b9a1bff">Wt::WTreeNode::LoadPolicy</a></td>
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<p>An enumeration for the policy to load children. </p>
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="a51c02b42c069e61a269fde598b9a1bffa4a962a514c531fb52c5958f61950ff3e"></a><!-- doxytag: member="LazyLoading" ref="a51c02b42c069e61a269fde598b9a1bffa4a962a514c531fb52c5958f61950ff3e" args="" -->LazyLoading</em> </td><td>
<p>Load-on-demand of child nodes. </p>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a51c02b42c069e61a269fde598b9a1bffaf771c90906d73ed5eb1e6728366241e1"></a><!-- doxytag: member="PreLoading" ref="a51c02b42c069e61a269fde598b9a1bffaf771c90906d73ed5eb1e6728366241e1" args="" -->PreLoading</em> </td><td>
<p>Pre-load all child nodes. </p>
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<tr><td valign="top"><em><a class="anchor" id="a51c02b42c069e61a269fde598b9a1bffa387323cbdc8efd12ef6bf8553876c011"></a><!-- doxytag: member="NextLevelLoading" ref="a51c02b42c069e61a269fde598b9a1bffa387323cbdc8efd12ef6bf8553876c011" args="" -->NextLevelLoading</em> </td><td>
<p>Pre-load one level of child nodes. </p>
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</dd>
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<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a169f429e0f0e1fe6d0874f9db72d041a"></a><!-- doxytag: member="Wt::WTreeNode::WTreeNode" ref="a169f429e0f0e1fe6d0874f9db72d041a" args="(const WString &labelText, WIconPair *labelIcon=0, WTreeNode *parentNode=0)" -->
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<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>
<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>
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<p>Creates a tree node with the given label. </p>
<p>The labelIcon, if specified, will appear just before the label and its state reflect the expand/collapse state of the node.</p>
<p>The node is initialized to be collapsed. </p>
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<a class="anchor" id="a3e414fb2edce78eab5431db82aefed15"></a><!-- doxytag: member="Wt::WTreeNode::WTreeNode" ref="a3e414fb2edce78eab5431db82aefed15" 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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<p>Creates a tree node with empty <a class="el" href="classWt_1_1WTreeNode.html#ae87e7590a98a4ccdbec6aeb49fd14025" title="Accesses the container widget that holds the label area.">labelArea()</a>. </p>
<p>This tree node has no label or labelicon, and is therefore ideally suited to provide a custom look. </p>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="adeb2bd7c946ef9c7bb5b72b3f88453a6"></a><!-- doxytag: member="Wt::WTreeNode::addChildNode" ref="adeb2bd7c946ef9c7bb5b72b3f88453a6" args="(WTreeNode *node)" -->
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<td class="memname">void Wt::WTreeNode::addChildNode </td>
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<td class="paramtype"><a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> * </td>
<td class="paramname"><em>node</em></td><td>)</td>
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<p>Adds a child node. </p>
<p>Equivalent to: </p>
<div class="fragment"><pre class="fragment"> <a class="code" href="classWt_1_1WTreeNode.html#a460f47f625133c99c622c71309bdc373" title="Inserts a child node.">insertChildNode</a>(<a class="code" href="classWt_1_1WTreeNode.html#aa0f780835958f27b08fed66c1e4461e7" title="Returns the list of children.">childNodes</a>().size(), node);
</pre></div><dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a460f47f625133c99c622c71309bdc373" title="Inserts a child node.">insertChildNode()</a> </dd></dl>
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<a class="anchor" id="a970b7d1e5df403888e7c44750bf4b149"></a><!-- doxytag: member="Wt::WTreeNode::childCountPolicy" ref="a970b7d1e5df403888e7c44750bf4b149" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WTreeNode.html#a0deb92963922074b6262f71e9fccd24a">ChildCountPolicy</a> Wt::WTreeNode::childCountPolicy </td>
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<p>Returns the child count policy. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a5a625b5a94386386dabd36277d5f7c1b" title="Configures how and when the child count should be displayed.">setChildCountPolicy(ChildCountPolicy policy)</a> </dd></dl>
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<a class="anchor" id="a43ed4fd057fac436d93bda4a6d1de7dd"></a><!-- doxytag: member="Wt::WTreeNode::collapse" ref="a43ed4fd057fac436d93bda4a6d1de7dd" args="()" -->
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<td class="memname">void Wt::WTreeNode::collapse </td>
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<p>Collapses this node. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a10e99f9db96ec2fc500927a5d50caafe" title="Expands this node.">expand()</a> </dd>
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<a class="el" href="classWt_1_1WTreeNode.html#a98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> </dd></dl>
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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>
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<p>Signal emitted when the node is collapsed by the user. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#adecb58d1334ac18d7e78e6e4d8e2e0e4" title="Signal emitted when the node is expanded by the user.">expanded()</a> </dd></dl>
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<a class="anchor" id="abfa02369517d2cc7cd3ee1d3839740e3"></a><!-- doxytag: member="Wt::WTreeNode::descendantAdded" ref="abfa02369517d2cc7cd3ee1d3839740e3" 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>
<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. </p>
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<a class="anchor" id="aea7b6b2ba3d170fa57dfb7451f878a5d"></a><!-- doxytag: member="Wt::WTreeNode::descendantRemoved" ref="aea7b6b2ba3d170fa57dfb7451f878a5d" args="(WTreeNode *node)" -->
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<td class="memname">void Wt::WTreeNode::descendantRemoved </td>
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<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>
<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. </p>
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<a class="anchor" id="a1a2bec02861430af0a8b80dd9e84324e"></a><!-- doxytag: member="Wt::WTreeNode::displayedChildCount" ref="a1a2bec02861430af0a8b80dd9e84324e" 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>
<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#aa0f780835958f27b08fed66c1e4461e7" title="Returns the list of children.">childNodes()</a>.size(). </p>
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<a class="anchor" id="a98cc68ceed98e3e98145fe5a8129c066"></a><!-- doxytag: member="Wt::WTreeNode::doCollapse" ref="a98cc68ceed98e3e98145fe5a8129c066" args="()" -->
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<td class="memname">void Wt::WTreeNode::doCollapse </td>
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<td><code> [protected, virtual]</code></td>
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<p>The actual collapse. </p>
<p>This method, which is implemented as a stateless slot, performs the actual collapse of the node.</p>
<p>You may want to reimplement this function (and <a class="el" href="classWt_1_1WTreeNode.html#a67cd4a5c8169919e1e1feadc1cab7ae3" title="Undo method for doCollapse() stateless implementation.">undoDoCollapse()</a>) if you wish to do additional things on node expansion.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a7cf5f24e57d19df0b8e01638c75c4bf7" title="The actual expand.">doExpand()</a> </dd>
<dd>
<a class="el" href="classWt_1_1WTreeNode.html#a43ed4fd057fac436d93bda4a6d1de7dd" title="Collapses this node.">collapse()</a> </dd></dl>
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<a class="anchor" id="a7cf5f24e57d19df0b8e01638c75c4bf7"></a><!-- doxytag: member="Wt::WTreeNode::doExpand" ref="a7cf5f24e57d19df0b8e01638c75c4bf7" args="()" -->
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<td class="memname">void Wt::WTreeNode::doExpand </td>
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<td><code> [protected, virtual]</code></td>
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<p>The actual expand. </p>
<p>This method, which is implemented as a stateless slot, performs the actual expansion of the node.</p>
<p>You may want to reimplement this function (and <a class="el" href="classWt_1_1WTreeNode.html#ac0d0cbdfb0c8c0d493e70a6b40b40fc2" title="Undo method for doCollapse() stateless implementation.">undoDoExpand()</a>) if you wish to do additional things on node expansion.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> </dd>
<dd>
<a class="el" href="classWt_1_1WTreeNode.html#a10e99f9db96ec2fc500927a5d50caafe" title="Expands this node.">expand()</a> </dd></dl>
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<a class="anchor" id="a10e99f9db96ec2fc500927a5d50caafe"></a><!-- doxytag: member="Wt::WTreeNode::expand" ref="a10e99f9db96ec2fc500927a5d50caafe" args="()" -->
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<p>Expands this node. </p>
<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"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a43ed4fd057fac436d93bda4a6d1de7dd" title="Collapses this node.">collapse()</a> </dd>
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<a class="el" href="classWt_1_1WTreeNode.html#a7cf5f24e57d19df0b8e01638c75c4bf7" title="The actual expand.">doExpand()</a> </dd></dl>
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<a class="anchor" id="a4f19826594b5b080b0a436c474c31f61"></a><!-- doxytag: member="Wt::WTreeNode::expandable" ref="a4f19826594b5b080b0a436c474c31f61" args="()" -->
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<td class="memname">bool Wt::WTreeNode::expandable </td>
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<p>Returns whether this node can be expanded. </p>
<p>The default implementation populates the node if necessary, and then checks if there are any child nodes.</p>
<p>You may wish to reimplement this method if you reimplement <a class="el" href="classWt_1_1WTreeNode.html#a9ab70c6020dbd9ea3204c625029a7a1b" 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"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a9ab70c6020dbd9ea3204c625029a7a1b" title="Populates the node dynamically on loading.">populate()</a> </dd></dl>
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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>
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<p>Signal emitted when the node is expanded by the user. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a27b27bfa04d5414e058427ecfdc82309" title="Signal emitted when the node is collapsed by the user.">collapsed()</a> </dd></dl>
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<a class="anchor" id="ab79f1baedef8134c2d25b22a988f5c80"></a><!-- doxytag: member="Wt::WTreeNode::imagePack" ref="ab79f1baedef8134c2d25b22a988f5c80" args="() const " -->
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<td class="memname">std::string Wt::WTreeNode::imagePack </td>
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<p>The image pack that is used for this tree node (<b>deprecated</b>). </p>
<dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000054">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" id="a460f47f625133c99c622c71309bdc373"></a><!-- doxytag: member="Wt::WTreeNode::insertChildNode" ref="a460f47f625133c99c622c71309bdc373" args="(int index, WTreeNode *node)" -->
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<td class="paramname"><em>node</em> </td>
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<p>Inserts a child node. </p>
<p>Inserts the node <code>node</code> at index <code>index</code>. </p>
<p>Reimplemented in <a class="el" href="classWt_1_1WTreeTableNode.html#a7766f176f956e4fede258d86e208c6cd">Wt::WTreeTableNode</a>.</p>
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<p>Returns if this node may be selected. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a60428cfc48b2a39550efc308b38406b2" title="Allows this node to be selected.">setSelectable(bool)</a> </dd></dl>
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<a class="anchor" id="ae87e7590a98a4ccdbec6aeb49fd14025"></a><!-- doxytag: member="Wt::WTreeNode::labelArea" ref="ae87e7590a98a4ccdbec6aeb49fd14025" args="()" -->
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<td class="memname"><a class="el" href="classWt_1_1WTableCell.html">WTableCell</a> * Wt::WTreeNode::labelArea </td>
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<p>Accesses the container widget that holds the label area. </p>
<p>Use this to customize how the label should look like. </p>
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<a class="anchor" id="abebb8dd92b2470901a3c9fb36e315c62"></a><!-- doxytag: member="Wt::WTreeNode::parentNode" ref="abebb8dd92b2470901a3c9fb36e315c62" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a>* Wt::WTreeNode::parentNode </td>
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<p>Returns the parent node. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#aa0f780835958f27b08fed66c1e4461e7" title="Returns the list of children.">childNodes()</a> </dd></dl>
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<p>Populates the node dynamically on loading. </p>
<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. </p>
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<a class="anchor" id="aee388605958559d124616ce9dbfc7df5"></a><!-- doxytag: member="Wt::WTreeNode::populated" ref="aee388605958559d124616ce9dbfc7df5" args="() const " -->
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<td class="memname">bool Wt::WTreeNode::populated </td>
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<td> const<code> [protected]</code></td>
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<p>Returns whether this node has already been populated. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a9ab70c6020dbd9ea3204c625029a7a1b" title="Populates the node dynamically on loading.">populate()</a> </dd></dl>
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<a class="anchor" id="a6513443612d2456a69610e744bc629f4"></a><!-- doxytag: member="Wt::WTreeNode::removeChildNode" ref="a6513443612d2456a69610e744bc629f4" args="(WTreeNode *node)" -->
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<td class="memname">void Wt::WTreeNode::removeChildNode </td>
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<td class="paramtype"><a class="el" href="classWt_1_1WTreeNode.html">WTreeNode</a> * </td>
<td class="paramname"><em>node</em></td><td>)</td>
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<p>Removes a child node. </p>
<p>The child node itself is not deleted </p>
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<a class="anchor" id="ae4bb84bf91002f80941d2e890cab12cd"></a><!-- doxytag: member="Wt::WTreeNode::renderSelected" ref="ae4bb84bf91002f80941d2e890cab12cd" args="(bool selected)" -->
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<td class="memname">void Wt::WTreeNode::renderSelected </td>
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<td><code> [protected, virtual]</code></td>
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<p>Renders the node to be selected. </p>
<p>The default implementation changes the style class of the <a class="el" href="classWt_1_1WTreeNode.html#ae87e7590a98a4ccdbec6aeb49fd14025" title="Accesses the container widget that holds the label area.">labelArea()</a> to "selected". </p>
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<a class="anchor" id="a23a35eefeeda38afbca4cf59404c4806"></a><!-- doxytag: member="Wt::WTreeNode::selected" ref="a23a35eefeeda38afbca4cf59404c4806" args="()" -->
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<td class="memname"><a class="el" href="classWt_1_1Signal.html">Signal</a><bool>& Wt::WTreeNode::selected </td>
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<p>Signal that is emitted when the node is added or removed from the selection </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTree.html#a103603f639e07f83d1a75e293b70966d" title="Signal that is emitted when the selection changes.">WTree::itemSelectionChanged</a> </dd></dl>
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<a class="anchor" id="a5a625b5a94386386dabd36277d5f7c1b"></a><!-- doxytag: member="Wt::WTreeNode::setChildCountPolicy" ref="a5a625b5a94386386dabd36277d5f7c1b" args="(ChildCountPolicy policy)" -->
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<td class="memname">void Wt::WTreeNode::setChildCountPolicy </td>
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<td class="paramtype"><a class="el" href="classWt_1_1WTreeNode.html#a0deb92963922074b6262f71e9fccd24a">ChildCountPolicy</a> </td>
<td class="paramname"><em>policy</em></td><td>)</td>
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<p>Configures how and when the child count should be displayed. </p>
<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>
<p>The child count policy is inherited by all children in the tree. </p>
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<a class="anchor" id="a5594488be1f49052915b4ecc840f44ce"></a><!-- doxytag: member="Wt::WTreeNode::setChildrenDecorated" ref="a5594488be1f49052915b4ecc840f44ce" args="(bool decorated)" -->
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<td class="memname">void Wt::WTreeNode::setChildrenDecorated </td>
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<p>Sets whether this node's children are decorated. </p>
<p>By default, node's children have expand/collapse and other lines to display their linkage and offspring.</p>
<p>By setting <code>decorated</code> to <code>false</code>, you can hide the decorations for the node's children. </p>
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<a class="anchor" id="aff37a6152a8195dd9b2a80e593d94298"></a><!-- doxytag: member="Wt::WTreeNode::setImagePack" ref="aff37a6152a8195dd9b2a80e593d94298" args="(const std::string &url)" -->
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<td class="memname">void Wt::WTreeNode::setImagePack </td>
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<td class="paramname"><em>url</em></td><td>)</td>
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<p>Sets the image pack for this (sub)tree (<b>deprecated</b>). </p>
<dl class="deprecated"><dt><b><a class="el" href="deprecated.html#_deprecated000053">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" id="a85e7232623373ad75a5b5bbdbbf734ca"></a><!-- doxytag: member="Wt::WTreeNode::setInteractive" ref="a85e7232623373ad75a5b5bbdbbf734ca" args="(bool interactive)" -->
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<td class="memname">void Wt::WTreeNode::setInteractive </td>
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<td class="paramname"><em>interactive</em></td><td>)</td>
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<p>Sets whether this node is interactive. </p>
<p>Interactive nodes can be clicked upon and will populate a list of children when clicked. By disabling the interactivity, a node will not react to a click event. </p>
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<a class="anchor" id="aaf3d613cc461f4d9d39a71cd45bd155e"></a><!-- doxytag: member="Wt::WTreeNode::setLoadPolicy" ref="aaf3d613cc461f4d9d39a71cd45bd155e" args="(LoadPolicy loadPolicy)" -->
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<td class="memname">void Wt::WTreeNode::setLoadPolicy </td>
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<td class="paramname"><em>loadPolicy</em></td><td>)</td>
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<p>Sets the load policy for this tree. </p>
<p>This may only be set on the root of a tree, and before adding any children. </p>
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<a class="anchor" id="a63d37fa9bb5a3ba8ea178b5f3737626d"></a><!-- doxytag: member="Wt::WTreeNode::setNodeVisible" ref="a63d37fa9bb5a3ba8ea178b5f3737626d" args="(bool visible)" -->
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<td class="memname">void Wt::WTreeNode::setNodeVisible </td>
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<p>Sets the visibility of the node itself. </p>
<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. </p>
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<a class="anchor" id="a60428cfc48b2a39550efc308b38406b2"></a><!-- doxytag: member="Wt::WTreeNode::setSelectable" ref="a60428cfc48b2a39550efc308b38406b2" args="(bool selectable)" -->
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<td class="memname">void Wt::WTreeNode::setSelectable </td>
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<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>
<p>By default, all nodes may be selected.</p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a413239e83c39e46fbb7d9525ac615241" title="Returns if this node may be selected.">isSelectable()</a>, <a class="el" href="classWt_1_1WTree.html#a52c770a65ac3f4c2493f714271a5133a" 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#a1cf4a59e433df7c28e7917a5e03fdac1">Wt::WCompositeWidget</a>.</p>
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<a class="anchor" id="adefe7d8365d9e64bde8e12cf0a1fe1c3"></a><!-- doxytag: member="Wt::WTreeNode::tree" ref="adefe7d8365d9e64bde8e12cf0a1fe1c3" args="() const " -->
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<td class="memname"><a class="el" href="classWt_1_1WTree.html">WTree</a> * Wt::WTreeNode::tree </td>
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<p>Returns the tree. </p>
<p>By default if this node has no parent the result will be 0. </p>
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<a class="anchor" id="a67cd4a5c8169919e1e1feadc1cab7ae3"></a><!-- doxytag: member="Wt::WTreeNode::undoDoCollapse" ref="a67cd4a5c8169919e1e1feadc1cab7ae3" args="()" -->
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<td class="memname">void Wt::WTreeNode::undoDoCollapse </td>
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<td><code> [protected, virtual]</code></td>
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<p>Undo method for <a class="el" href="classWt_1_1WTreeNode.html#a98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> stateless implementation. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a7cf5f24e57d19df0b8e01638c75c4bf7" title="The actual expand.">doExpand()</a> </dd></dl>
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<a class="anchor" id="ac0d0cbdfb0c8c0d493e70a6b40b40fc2"></a><!-- doxytag: member="Wt::WTreeNode::undoDoExpand" ref="ac0d0cbdfb0c8c0d493e70a6b40b40fc2" args="()" -->
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<td class="memname">void Wt::WTreeNode::undoDoExpand </td>
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<td class="paramname"></td><td>)</td>
<td><code> [protected, virtual]</code></td>
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<p>Undo method for <a class="el" href="classWt_1_1WTreeNode.html#a98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> stateless implementation. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classWt_1_1WTreeNode.html#a98cc68ceed98e3e98145fe5a8129c066" title="The actual collapse.">doCollapse()</a> </dd></dl>
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