A default layout manager. More...

#include <Wt/WDefaultLayout>

Inheritance diagram for Wt::WDefaultLayout:

Public Member Functions
	WDefaultLayout (WWidget *parent=0)
	Creates a new WDefaultLayout.
	~WDefaultLayout ()
	Destructor.
virtual void	addItem (WLayoutItem *item)
	Adds a layout item.
virtual void	removeItem (WLayoutItem *item)
	Removes a layout item (widget or nested layout).
virtual WLayoutItem *	itemAt (int index) const
	Returns the layout item at a specific index.
virtual int	indexOf (WLayoutItem *item) const
	Returns the index of a given item.
virtual int	count () const
	Returns the number of items in this layout.
virtual void	clear ()
	Removes and deletes all child widgets and nested layouts.
Public Member Functions inherited from Wt::WLayout
virtual	~WLayout ()
	Destructor.
void	addWidget (WWidget *widget)
	Adds the given widget to the layout.
bool	removeWidget (WWidget *widget)
	Removes the given widget from the layout.
virtual WWidgetItem *	findWidgetItem (WWidget *widget)
	Finds the widget item associated with the given widget.
void	setLayoutHint (const std::string &name, const std::string &value)
	Provides a hint to the layout implementation.
virtual WWidget *	widget ()
	Returns the widget that is held by this WLayoutItem.
virtual WLayout *	layout ()
	Returns the layout that implements this WLayoutItem.
virtual WLayout *	parentLayout () const
	Returns the layout in which this item is contained.
WLayoutItemImpl *	impl () const
	Returns the implementation for this layout item.
void	setContentsMargins (int left, int top, int right, int bottom)
	Set contents margins (in pixels).
void	getContentsMargins (int left, int top, int right, int bottom) const
	Returns the contents margins.
Public Member Functions inherited from Wt::WLayoutItem
virtual	~WLayoutItem ()
	Destructor.
Public Member Functions inherited from Wt::WObject
	WObject (WObject *parent=0)
	Create a WObject with a given parent object.
virtual	~WObject ()
	Destructor.
virtual const std::string	id () const
	Returns the (unique) identifier for this object.
void	setObjectName (const std::string &name)
	Sets an object name.
virtual std::string	objectName () const
	Returns the object name.
void	resetLearnedSlots ()
	Resets learned stateless slot implementations.
template<class T >
void	resetLearnedSlot (void(T::*method)())
	Resets a learned stateless slot implementation.
template<class T >
WStatelessSlot *	implementStateless (void(T::*method)())
	Declares a slot to be stateless and learn client-side behaviour on first invocation.
template<class T >
WStatelessSlot *	implementStateless (void(T::method)(), void(T::undoMethod)())
	Declares a slot to be stateless and learn client-side behaviour in advance.
template<class T >
WStatelessSlot *	implementJavaScript (void(T::*method)(), const std::string &jsCode)
	Provides a JavaScript implementation for a method.
void	addChild (WObject *child)
	Adds a child object.
virtual void	removeChild (WObject *child)
	Removes a child object.
const std::vector< WObject * > &	children () const
	Returns the children.
WObject *	parent () const
	Returns the parent object.

Additional Inherited Members
Protected Member Functions inherited from Wt::WLayout
	WLayout ()
	Create a layout.
void	update (WLayoutItem *item=0)
	Update the layout.
void	updateAddItem (WLayoutItem *item)
	Update the layout, adding the given layout item.
void	updateRemoveItem (WLayoutItem *item)
	Update the layout, remove the given layout item.
void	setLayoutInParent (WWidget *parent)
	Set the layout in the parent.
Protected Member Functions inherited from Wt::WObject
virtual WStatelessSlot *	getStateless (Method method)
	On-demand stateless slot implementation.

Detailed Description

A default layout manager.

The default layout does not attempt to resize any of the widgets, and puts all widgets vertically above each other.

Note:: This layout manager is applicable only to Ext::Container container widgets. However, its behaviour is equivalent to not using a layout manager on a WContainerWidget and adding contents directly using WContainerWidget::addWidget().

Member Function Documentation

void Wt::WDefaultLayout::addItem ( WLayoutItem * item )

virtual

Adds a layout item.

The item may be a widget or nested layout, and is added below the last added item.

See also:: removeItem(WLayoutItem *), addWidget(WWidget *)

Implements Wt::WLayout.

void Wt::WDefaultLayout::clear ( )

virtual

Removes and deletes all child widgets and nested layouts.

This is similar to WContainerWidget::clear(), with the exception that the layout itself is not deleted.

Implements Wt::WLayout.

int Wt::WDefaultLayout::count ( ) const

virtual

Returns the number of items in this layout.

This may be a theoretical number, which is greater than the actual number of items. It can be used to iterate over the items in the layout, in conjunction with itemAt().

Implements Wt::WLayout.

int Wt::WDefaultLayout::indexOf ( WLayoutItem * item ) const

virtual

Returns the index of a given item.

The default implementation loops over all items, and returns the index for which itemAt(index) equals item.