makVrv::DtDeselectableTreeWidget Class Reference

A tree widget that allows for selecting no item. More...

Inheritance diagram for makVrv::DtDeselectableTreeWidget:

Public Member Functions
	DtDeselectableTreeWidget (QWidget *parent)
	CTOR.
virtual	~DtDeselectableTreeWidget ()
	DTOR.
virtual QTreeWidgetItem *	currentSelectedItem ()
	get the current selected tree item
virtual void	setCurrentSelectedItem (QTreeWidgetItem *item)
	set the current selected tree item
virtual bool	ifCurrentSelectedItemHasChild ()
	whether the current selected tree item has child

Protected Slots
virtual void	rowsInserted (const QModelIndex &parent, int start, int end)
	Handle when rows are inserted into the tree.
virtual void	rowsAboutToBeRemoved (const QModelIndex &parent, int start, int end)
	Handle when rows are removed from the tree.

Protected Member Functions
virtual void	mousePressEvent (QMouseEvent *event)
	Handle mouse press events on the widget.
virtual bool	eventFilter (QObject *obj, QEvent *event)
	Handle events on the widget.

Protected Attributes
QTreeWidgetItem *	myCurrentSelectedItem

Detailed Description

A tree widget that allows for selecting no item.

Mouse clicking on any item in the tree will switch the selection-focus normally. Clicking white space off the tree will remove selection-focus from the current items.

Constructor & Destructor Documentation

makVrv::DtDeselectableTreeWidget::DtDeselectableTreeWidget

(

QWidget *

parent

)

CTOR.

virtual makVrv::DtDeselectableTreeWidget::~DtDeselectableTreeWidget ( )

virtual

DTOR.

Member Function Documentation

virtual QTreeWidgetItem* makVrv::DtDeselectableTreeWidget::currentSelectedItem ( )

virtual

get the current selected tree item

virtual void makVrv::DtDeselectableTreeWidget::setCurrentSelectedItem ( QTreeWidgetItem *  item )

virtual

set the current selected tree item

virtual bool makVrv::DtDeselectableTreeWidget::ifCurrentSelectedItemHasChild ( )

virtual

whether the current selected tree item has child

virtual void makVrv::DtDeselectableTreeWidget::mousePressEvent ( QMouseEvent *  event )

protectedvirtual

Handle mouse press events on the widget.

This handler identifies where the mouse clicked on the tree. If the click was on an item, the event is handled normally. If the click was not on an item, any selected item becomes un-selected.

virtual bool makVrv::DtDeselectableTreeWidget::eventFilter ( QObject *  obj, QEvent *  event  )

protectedvirtual

Handle events on the widget.

This handler un-selects all items when the widget is hidden so no item is selected when the widget is re-shown. The handler reselects the current item when the widget is activated. The re-selection forces the item to visually display focus, giving feedback to the user.

virtual void makVrv::DtDeselectableTreeWidget::rowsInserted ( const QModelIndex &  parent, int  start, int  end  )

protectedvirtualslot

Handle when rows are inserted into the tree.

This handler clears the current selected item.

virtual void makVrv::DtDeselectableTreeWidget::rowsAboutToBeRemoved ( const QModelIndex &  parent, int  start, int  end  )

protectedvirtualslot

Handle when rows are removed from the tree.

This handler clears the current selected item.

Member Data Documentation

QTreeWidgetItem* makVrv::DtDeselectableTreeWidget::myCurrentSelectedItem

protected

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The documentation for this class was generated from the following file:

• /exports/nfedora7-1/nightly/docs/vrforcesDevelopment.vrf4-6-branch/include/vrvCoreQt/DtDeselectableTreeWidget.h