A single node in a tree. More...

#include <Wt/WTreeNode.h>

Inheritance diagram for Wt::WTreeNode:

Public Member Functions
	WTreeNode (const WString &labelText, std::unique_ptr< WIconPair > labelIcon=nullptr)
	Creates a tree node with the given label. More...

	~WTreeNode ()
	Destructor.

virtual WTree *	tree () const
	Returns the tree. More...

WText *	label () const
	Returns the label.

WIconPair *	labelIcon () const
	Returns the label icon.

void	setLabelIcon (std::unique_ptr< WIconPair > labelIcon)
	Sets the label icon.

virtual void	insertChildNode (int index, std::unique_ptr< WTreeNode > node)
	Inserts a child node. More...

WTreeNode *	addChildNode (std::unique_ptr< WTreeNode > node)
	Adds a child node. More...

std::unique_ptr< WTreeNode >	removeChildNode (WTreeNode *node)
	Removes a child node.

std::vector< WTreeNode * >	childNodes () const
	Returns the list of children.

virtual int	displayedChildCount () const
	Returns the number of children that should be displayed. More...

void	setChildCountPolicy (ChildCountPolicy policy)
	Configures how and when the child count should be displayed. More...

ChildCountPolicy	childCountPolicy () const
	Returns the child count policy. More...

void	setLoadPolicy (ContentLoading loadPolicy)
	Sets the load policy for this tree. More...

bool	isExpanded () const
	Returns whether this node is expanded.

virtual void	setSelectable (bool selectable) override
	Allows this node to be selected. More...

virtual bool	isSelectable () const
	Returns if this node may be selected. More...

WTreeNode *	parentNode () const
	Returns the parent node. More...

void	setNodeVisible (bool visible)
	Sets the visibility of the node itself. More...

void	setChildrenDecorated (bool decorated)
	Sets whether this node's children are decorated. More...

void	setInteractive (bool interactive)
	Sets whether this node is interactive. More...

void	expand ()
	Expands this node. More...

void	collapse ()
	Collapses this node. More...

EventSignal< WMouseEvent > &	expanded ()
	Signal emitted when the node is expanded by the user. More...

EventSignal< WMouseEvent > &	collapsed ()
	Signal emitted when the node is collapsed by the user. More...

Signal< bool > &	selected ()
	Signal that is emitted when the node is added or removed from the selection More...

Public Member Functions inherited from Wt::WCompositeWidget
	WCompositeWidget ()
	Creates a WCompositeWidget. More...

	WCompositeWidget (std::unique_ptr< WWidget > implementation)
	Creates a WCompositeWidget with given implementation. More...

virtual std::vector< WWidget * >	children () const override
	Returns child widgets. More...

virtual std::unique_ptr< WWidget >	removeWidget (WWidget *widget) override
	Removes a child widget.

virtual void	setObjectName (const std::string &name) override
	Sets an object name. More...

virtual std::string	objectName () const override
	Returns the object name. More...

virtual const std::string	id () const override
	Returns the (unique) identifier for this object. More...

virtual void	setPositionScheme (PositionScheme scheme) override
	Sets the CSS position scheme. More...

virtual PositionScheme	positionScheme () const override
	Returns the CSS position scheme. More...

virtual void	setOffsets (const WLength &offset, WFlags< Side > sides=AllSides) override
	Sets CSS offsets for a non-statically positioned widget. More...

virtual WLength	offset (Side s) const override
	Returns a CSS offset. More...

virtual void	resize (const WLength &width, const WLength &height) override
	Resizes the widget. More...

virtual WLength	width () const override
	Returns the width. More...

virtual WLength	height () const override
	Returns the height. More...

virtual void	setMinimumSize (const WLength &width, const WLength &height) override
	Sets a minimum size. More...

virtual WLength	minimumWidth () const override
	Returns the minimum width. More...

virtual WLength	minimumHeight () const override
	Returns the minimum height. More...

virtual void	setMaximumSize (const WLength &width, const WLength &height) override
	Sets a maximum size. More...

virtual WLength	maximumWidth () const override
	Returns the maximum width. More...

virtual WLength	maximumHeight () const override
	Returns the maximum height. More...

virtual void	setLineHeight (const WLength &height) override
	Sets the CSS line height for contained text.

virtual WLength	lineHeight () const override
	Returns the CSS line height for contained text. More...

virtual void	setFloatSide (Side s) override
	Specifies a CSS float side. More...

virtual Side	floatSide () const override
	Returns the CSS float side. More...

virtual void	setClearSides (WFlags< Side > sides) override
	Sets the sides that should be cleared of floats. More...

virtual WFlags< Side >	clearSides () const override
	Returns the sides that should remain empty. More...

virtual void	setMargin (const WLength &margin, WFlags< Side > sides=AllSides) override
	Sets CSS margins around the widget. More...

virtual WLength	margin (Side side) const override
	Returns a CSS margin set. More...

virtual void	setHiddenKeepsGeometry (bool enabled) override
	Sets whether the widget keeps its geometry when hidden. More...

virtual bool	hiddenKeepsGeometry () const override
	Returns whether the widget keeps its geometry when hidden. More...

virtual void	setHidden (bool hidden, const WAnimation &animation=WAnimation()) override
	Hides or shows the widget. More...

virtual bool	isHidden () const override
	Returns whether the widget is set hidden. More...

virtual bool	isVisible () const override
	Returns whether the widget is visible. More...

virtual void	setDisabled (bool disabled) override
	Sets whether the widget is disabled. More...

virtual bool	isDisabled () const override
	Returns whether the widget is set disabled. More...

virtual bool	isEnabled () const override
	Returns whether the widget is enabled. More...

virtual void	setPopup (bool popup) override
	Lets the widget overlay over other sibling widgets. More...

virtual bool	isPopup () const override
	Returns whether the widget is overlayed. More...

virtual void	setInline (bool isInline) override
	Sets whether the widget is displayed inline or as a block. More...

virtual bool	isInline () const override
	Returns whether the widget is displayed inline or as block. More...

virtual void	setDecorationStyle (const WCssDecorationStyle &style) override
	Sets a CSS decoration style. More...

virtual WCssDecorationStyle &	decorationStyle () override
	Returns the decoration style of this widget. More...

virtual void	setStyleClass (const WString &styleClass) override
	Sets (one or more) CSS style classes. More...

virtual WString	styleClass () const override
	Returns the CSS style class. More...

virtual void	addStyleClass (const WString &styleClass, bool force=false) override
	Adds a CSS style class. More...

virtual void	removeStyleClass (const WString &styleClass, bool force=false) override
	Removes a CSS style class. More...

virtual bool	hasStyleClass (const WString &styleClass) const override
	Returns whether the widget has a style class.

virtual void	setVerticalAlignment (AlignmentFlag alignment, const WLength &length=WLength::Auto) override
	Sets the vertical alignment. More...

virtual AlignmentFlag	verticalAlignment () const override
	Returns the vertical alignment. More...

virtual WLength	verticalAlignmentLength () const override
	Returns the fixed vertical alignment that was set. More...

virtual void	setToolTip (const WString &text, TextFormat textFormat=TextFormat::Plain) override
	Sets a tooltip. More...

virtual WString	toolTip () const override
	Returns the tooltip.

virtual void	setDeferredToolTip (bool enable, TextFormat textFormat=TextFormat::Plain) override
	Enable deferred tooltip. More...

virtual void	refresh () override
	Refresh the widget. More...

virtual void	setAttributeValue (const std::string &name, const WString &value) override
	Sets an attribute value. More...

virtual WString	attributeValue (const std::string &name) const override
	Returns an attribute value. More...

virtual void	setJavaScriptMember (const std::string &name, const std::string &value) override
	Sets a JavaScript member. More...

virtual std::string	javaScriptMember (const std::string &name) const override
	Returns the value of a JavaScript member. More...

virtual void	callJavaScriptMember (const std::string &name, const std::string &args) override
	Calls a JavaScript member. More...

virtual void	load () override
	Loads content just before the widget is used. More...

virtual bool	loaded () const override
	Returns whether this widget has been loaded. More...

virtual void	setCanReceiveFocus (bool enabled) override
	Sets whether the widget can receive focus. More...

virtual bool	canReceiveFocus () const override
	Returns whether the widget can receive focus. More...

virtual void	setFocus (bool focus) override
	Sets focus. More...

virtual bool	setFirstFocus () override
	Set focus on the widget's first descendant. More...

virtual bool	hasFocus () const override
	Returns whether the widget currently has the focus.

virtual void	setTabIndex (int index) override
	Sets the tab index. More...

virtual int	tabIndex () const override
	Returns the tab index. More...

virtual void	setId (const std::string &id) override
	Sets the CSS Id. More...

virtual WWidget *	find (const std::string &name) override
	Finds a descendent widget by name. More...

virtual WWidget *	findById (const std::string &name) override
	Finds a descendent widget by id.

virtual void	doJavaScript (const std::string &js) override
	Executes the given JavaScript statements when the widget is rendered or updated. More...

virtual void	propagateSetEnabled (bool enabled) override
	Propagates that a widget was enabled or disabled through children. More...

virtual bool	scrollVisibilityEnabled () const final override
	Returns whether scroll visibility detection is enabled for this widget. More...

virtual void	setScrollVisibilityEnabled (bool enabled) final override
	Sets whether scroll visibility detection is enabled for this widget. More...

virtual int	scrollVisibilityMargin () const final override
	Returns the margin around the viewport within which the widget is considered visible. More...

virtual void	setScrollVisibilityMargin (int margin) final override
	Sets the margin around the viewport within which the widget is considered visible. More...

virtual Signal< bool > &	scrollVisibilityChanged () final override
	Signal triggered when the scroll visibility of this widget changes. More...

virtual bool	isScrollVisible () const final override
	Returns whether this widget is currently considered scroll visible. More...

virtual void	setThemeStyleEnabled (bool enabled) final override
	Sets whether theme styling for a widget is enabled or disabled. More...

virtual bool	isThemeStyleEnabled () const final override
	Returns whether this widget is currently styled by the chosen theme. More...

virtual std::unique_ptr< WWidget >	removeWidget (WWidget *widget)
	Removes a child widget.

template<typename Widget >
std::unique_ptr< Widget >	removeWidget (Widget *widget)
	Removes a child widget. More...

void	setFocus ()
	Sets focus. More...

virtual void	setFocus (bool focus)=0
	Sets focus. More...

Public Member Functions inherited from Wt::WWidget
virtual	~WWidget ()
	Destructor. More...

WWidget *	parent () const
	Returns the parent widget.

template<typename Widget >
std::unique_ptr< Widget >	removeWidget (Widget *widget)
	Removes a child widget. More...

std::unique_ptr< WWidget >	removeFromParent ()
	Removes the widget from its parent. More...

void	setWidth (const WLength &width)
	Sets the width. More...

void	setHeight (const WLength &height)
	Sets the height. More...

virtual void	positionAt (const WWidget *widget, Orientation orientation=Orientation::Vertical)
	Positions a widget next to another widget. More...

virtual void	toggleStyleClass (const WString &styleClass, bool add, bool force=false)
	Toggles a CSS style class.

std::string	jsRef () const
	Returns a JavaScript expression to the corresponding DOM node. More...

void	setFocus ()
	Sets focus. More...

virtual void	acceptDrops (const std::string &mimeType, const WString &hoverStyleClass=WString())
	Sets a mime type to be accepted for dropping. More...

virtual void	stopAcceptDrops (const std::string &mimeType)
	Indicates that a mime type is no longer accepted for dropping. More...

virtual void	htmlText (std::ostream &out)
	Streams the (X)HTML representation. More...

bool	isRendered () const
	Returns whether the widget is rendered. More...

void	hide ()
	Hides the widget. More...

void	animateHide (const WAnimation &animation)
	Hides the widget using an animation. More...

void	show ()
	Shows the widget. More...

void	animateShow (const WAnimation &animation)
	Shows the widget using an animation. More...

void	enable ()
	Enables the widget. More...

void	disable ()
	Disable thes widget. More...

bool	layoutSizeAware () const
	Returns whether the widget is layout size aware. More...

Public Member Functions inherited from Wt::WObject
void	addChild (std::unique_ptr< WObject > child)
	Add a child WObject whose lifetime is determined by this WObject.

template<typename Child >
Child *	addChild (std::unique_ptr< Child > child)
	Add a child WObject, returning a raw pointer. More...

std::unique_ptr< WObject >	removeChild (WObject *child)
	Remove a child WObject, so its lifetime is no longer determined by this WObject.

template<typename Child >
std::unique_ptr< Child >	removeChild (Child *child)
	Remove a child WObject, so its lifetime is no longer determined by this WObject. More...

void	resetLearnedSlots ()
	Resets learned stateless slot implementations. More...

template<class T >
void	resetLearnedSlot (void(T::*method)())
	Resets a learned stateless slot implementation. More...

template<class T >
WStatelessSlot *	implementStateless (void(T::*method)())
	Declares a slot to be stateless and learn client-side behaviour on first invocation. More...

template<class T >
WStatelessSlot *	implementStateless (void(T::method)(), void(T::undoMethod)())
	Declares a slot to be stateless and learn client-side behaviour in advance. More...

void	isNotStateless ()
	Marks the current function as not stateless. More...

template<class T >
WStatelessSlot *	implementJavaScript (void(T::*method)(), const std::string &jsCode)
	Provides a JavaScript implementation for a method. More...

Public Member Functions inherited from Wt::Core::observable
	observable () noexcept
	Default constructor.

virtual	~observable ()
	Destructor. More...

template<typename... Args, typename C >
auto	bindSafe (void(C::*method)(Args...)) noexcept
	Protects a method call against object destruction. More...

template<typename... Args, typename C >
auto	bindSafe (void(C::*method)(Args...) const) const noexcept
	Protects a const method call against object destruction. More...

template<typename Function >
auto	bindSafe (const Function &function) noexcept
	Protects a function against object destruction. More...

Protected Member Functions
	WTreeNode ()
	Creates a tree node with empty labelArea(). More...

WContainerWidget *	labelArea () const
	Accesses the container widget that holds the label area. More...

virtual void	populate ()
	Populates the node dynamically on loading. More...

bool	populated () const
	Returns whether this node has already been populated. More...

virtual bool	expandable ()
	Returns whether this node can be expanded. More...

virtual void	renderSelected (bool selected)
	Renders the node to be selected. More...

virtual void	descendantRemoved (WTreeNode *node)
	Reacts to the removal of a descendant node. More...

virtual void	descendantAdded (WTreeNode *node)
	Reacts to the addition of a descendant node. More...

virtual void	doExpand ()
	The actual expand. More...

virtual void	doCollapse ()
	The actual collapse. More...

virtual void	undoDoExpand ()
	Undo method for doCollapse() stateless implementation. More...

virtual void	undoDoCollapse ()
	Undo method for doCollapse() stateless implementation. More...

WIconPair *	expandIcon () const
	Accesses the icon pair that allows expansion of the tree node.

Protected Member Functions inherited from Wt::WCompositeWidget
virtual void	enableAjax () override
	Progresses to an Ajax-enabled widget. More...

void	setImplementation (std::unique_ptr< WWidget > widget)
	Set the implementation widget. More...

template<typename Widget >
Widget *	setImplementation (std::unique_ptr< Widget > widget)
	Sets the implementation widget, returning a raw pointer. More...

template<typename W , typename... Args>
W *	setNewImplementation (Args &&... args)
	Creates the implementation widget and sets it, returning a raw pointer. More...

WWidget *	implementation ()
	Get the implementation widget. More...

virtual int	boxPadding (Orientation orientation) const override
	Returns the widget's built-in padding. More...

virtual int	boxBorder (Orientation orientation) const override
	Returns the widget's built-in border width. More...

virtual void	render (WFlags< RenderFlag > flags) override
	Renders the widget. More...

Protected Member Functions inherited from Wt::WWidget
void	setLayoutSizeAware (bool sizeAware)
	Sets the widget to be aware of its size set by a layout manager. More...

virtual void	layoutSizeChanged (int width, int height)
	Virtual method that indicates a size change. More...

	WWidget ()
	Creates a widget.

virtual void	dropEvent (WDropEvent dropEvent)
	Handles a drop event. More...

void	scheduleRender (WFlags< RepaintFlag > flags=None)
	Schedules rerendering of the widget. More...

virtual WStatelessSlot *	getStateless (Method method) override
	On-demand stateless slot implementation. More...

Additional Inherited Members
Public Types inherited from Wt::WObject
typedef void(WObject::*	Method) ()
	Typedef for a WObject method without arguments.

Static Public Member Functions inherited from Wt::WWidget
static WString	tr (const char *key)
	Short hand for WString::tr() More...

Detailed Description

A single node in a tree.

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 addChildNode(), to add a child to its parent.

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 setChildCountPolicy().

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.

The treenode provides several policies to communicate the current contents of the tree to the client (if possible):

ContentLoading::Eager: the entire tree is transmitted to the client, and all tree navigation requires no further communication.
ContentLoading::Lazy: 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.
ContentLoading::NextLevel: 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.

The default policy is ContentLoading::Lazy. Another load policy may be specified using setLoadPolicy() on the root node and before adding any children. The load policy is inherited by all children in the tree.

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 populate() 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.

A second scenario that is if you want to customize the look of the tree label (see labelArea()) or if you want to modify or augment the event collapse/expand event handling (see doExpand() and doCollapse()).

See WTree for a usage example.

See also: WTree, WTreeTableNode

Constructor & Destructor Documentation

◆ WTreeNode() [1/2]

Wt::WTreeNode::WTreeNode	(	const WString &	labelText,
		std::unique_ptr< WIconPair >	labelIcon = `nullptr`
	)

Creates a tree node with the given label.

The labelIcon, if specified, will appear just before the label and its state reflect the expand/collapse state of the node.

The node is initialized to be collapsed.

◆ WTreeNode() [2/2]

Wt::WTreeNode::WTreeNode ( )

protected

Creates a tree node with empty labelArea().

This tree node has no label or labelicon, and is therefore ideally suited to provide a custom look.

Member Function Documentation

◆ addChildNode()

WTreeNode * Wt::WTreeNode::addChildNode ( std::unique_ptr< WTreeNode > node )

Adds a child node.

Equivalent to:

insertChildNode(childNodes().size(), std::move(node));

Wt::WTreeNode::childNodes

std::vector< WTreeNode * > childNodes() const

Returns the list of children.

Definition: WTreeNode.C:143

Wt::WTreeNode::insertChildNode

virtual void insertChildNode(int index, std::unique_ptr< WTreeNode > node)

Inserts a child node.

Definition: WTreeNode.C:348

See also: insertChildNode()

◆ childCountPolicy()

ChildCountPolicy Wt::WTreeNode::childCountPolicy ( ) const

Returns the child count policy.

See also: setChildCountPolicy(ChildCountPolicy policy)

◆ collapse()

void Wt::WTreeNode::collapse ( )

Collapses this node.

See also: expand(); doCollapse()

◆ collapsed()

EventSignal< WMouseEvent > & Wt::WTreeNode::collapsed ( )

Signal emitted when the node is collapsed by the user.

See also: expanded()

◆ descendantAdded()

void Wt::WTreeNode::descendantAdded ( WTreeNode * node )

protectedvirtual

Reacts to the addition of a descendant node.

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.

◆ descendantRemoved()

void Wt::WTreeNode::descendantRemoved ( WTreeNode * node )

protectedvirtual

Reacts to the removal of a descendant node.

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.

◆ displayedChildCount()

int Wt::WTreeNode::displayedChildCount ( ) const

virtual

Returns the number of children that should be displayed.

This is used to display the count in the count label. The default implementation simply returns childNodes().size().

◆ doCollapse()

void Wt::WTreeNode::doCollapse ( )

protectedvirtual

The actual collapse.

This method, which is implemented as a stateless slot, performs the actual collapse of the node.

You may want to reimplement this function (and undoDoCollapse()) if you wish to do additional things on node expansion.

See also: doExpand(); collapse()

◆ doExpand()

void Wt::WTreeNode::doExpand ( )

protectedvirtual

The actual expand.

This method, which is implemented as a stateless slot, performs the actual expansion of the node.

You may want to reimplement this function (and undoDoExpand()) if you wish to do additional things on node expansion.

See also: doCollapse(); expand()

◆ expand()

void Wt::WTreeNode::expand ( )

Expands this node.

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.

See also: collapse(); doExpand()

◆ expandable()

bool Wt::WTreeNode::expandable ( )

protectedvirtual

Returns whether this node can be expanded.

The default implementation populates the node if necessary, and then checks if there are any child nodes.

You may wish to reimplement this method if you reimplement populate(), and you have a quick default for determining whether a node may be expanded (which does not require populating the node).

See also: populate()

◆ expanded()

EventSignal< WMouseEvent > & Wt::WTreeNode::expanded ( )

Signal emitted when the node is expanded by the user.

See also: collapsed()

◆ insertChildNode()

void Wt::WTreeNode::insertChildNode	(	int	index,
		std::unique_ptr< WTreeNode >	node
	)

virtual

Inserts a child node.

Inserts the node node at index index.

Reimplemented in Wt::WTreeTableNode.

◆ isSelectable()

virtual bool Wt::WTreeNode::isSelectable ( ) const

virtual

Returns if this node may be selected.

See also: setSelectable(bool)

◆ labelArea()

WContainerWidget * Wt::WTreeNode::labelArea ( ) const

protected

Accesses the container widget that holds the label area.

Use this to customize how the label should look like.

◆ parentNode()

WTreeNode* Wt::WTreeNode::parentNode ( ) const

Returns the parent node.

See also: childNodes()

◆ populate()

void Wt::WTreeNode::populate ( )

protectedvirtual

Populates the node dynamically on loading.

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.

◆ populated()

bool Wt::WTreeNode::populated ( ) const

protected

Returns whether this node has already been populated.

See also: populate()

◆ renderSelected()

void Wt::WTreeNode::renderSelected ( bool selected )

protectedvirtual

Renders the node to be selected.

The default implementation changes the style class of the labelArea() to "selected".

◆ selected()

Signal<bool>& Wt::WTreeNode::selected ( )

Signal that is emitted when the node is added or removed from the selection

See also: WTree::itemSelectionChanged

◆ setChildCountPolicy()

void Wt::WTreeNode::setChildCountPolicy ( ChildCountPolicy policy )

Configures how and when the child count should be displayed.

By default, no child count indication is disabled (this is the behaviour since 2.1.1). Use this method to enable child count indications.

The child count policy is inherited by all children in the tree.

◆ setChildrenDecorated()

void Wt::WTreeNode::setChildrenDecorated ( bool decorated )

Sets whether this node's children are decorated.

By default, node's children have expand/collapse and other lines to display their linkage and offspring.

By setting decorated to false, you can hide the decorations for the node's children.

◆ setInteractive()

void Wt::WTreeNode::setInteractive ( bool interactive )

Sets whether this node is interactive.

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.

◆ setLoadPolicy()

void Wt::WTreeNode::setLoadPolicy ( ContentLoading loadPolicy )

Sets the load policy for this tree.

This may only be set on the root of a tree, and before adding any children.

◆ setNodeVisible()

void Wt::WTreeNode::setNodeVisible ( bool visible )

Sets the visibility of the node itself.

If false, then the node itself is not displayed, but only its children. This is typically used to hide the root node of a tree.

◆ setSelectable()

void Wt::WTreeNode::setSelectable ( bool selectable )

overridevirtual

Allows this node to be selected.

By default, all nodes may be selected.

See also: isSelectable(), WTree::select(WTreeNode *, bool)

Reimplemented from Wt::WCompositeWidget.

◆ tree()

WTree * Wt::WTreeNode::tree ( ) const

virtual

Returns the tree.

By default if this node has no parent the result will be 0.

◆ undoDoCollapse()

void Wt::WTreeNode::undoDoCollapse ( )

protectedvirtual

Undo method for doCollapse() stateless implementation.

See also: doExpand()

◆ undoDoExpand()

void Wt::WTreeNode::undoDoExpand ( )

protectedvirtual

Undo method for doCollapse() stateless implementation.

See also: doCollapse()

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ WTreeNode() [1/2]

◆ WTreeNode() [2/2]

Member Function Documentation

◆ addChildNode()

◆ childCountPolicy()

◆ collapse()

◆ collapsed()

◆ descendantAdded()

◆ descendantRemoved()

◆ displayedChildCount()

◆ doCollapse()

◆ doExpand()

◆ expand()

◆ expandable()

◆ expanded()

◆ insertChildNode()

◆ isSelectable()

◆ labelArea()

◆ parentNode()

◆ populate()

◆ populated()

◆ renderSelected()

◆ selected()

◆ setChildCountPolicy()

◆ setChildrenDecorated()

◆ setInteractive()

◆ setLoadPolicy()

◆ setNodeVisible()

◆ setSelectable()

◆ tree()

◆ undoDoCollapse()

◆ undoDoExpand()