gtkmm: Gtk::TreeSelection Class Reference

Typedefed as Gtk::TreeView::Selection. More...

Inheritance diagram for Gtk::TreeSelection:

Public Types
typedef sigc::slot< bool, const Glib::RefPtr< TreeModel > &, const TreeModel::Path &, bool >	SlotSelect
	For instance, bool on_select_function(const Glib::RefPtr<TreeModel>& model, const TreeModel::Path& path, bool path_currently_selected) The select function should return true if the state of the node may be toggled, and false if the state of the node should be left unchanged.
typedef sigc::slot< void, const TreeModel::iterator& >	SlotForeachIter
	For example, void on_foreach(const Gtk::TreeModel::iterator& iter);.
typedef sigc::slot< void, const TreeModel::Path& >	SlotForeachPath
	For example, void on_foreach(const Gtk::TreeModel::Path& path);.
typedef sigc::slot< void, const TreeModel::Path&, const TreeModel::iterator& >	SlotForeachPathAndIter
	For example, void on_foreach(const Gtk::TreeModel::Path& path, const Gtk::TreeModel::iterator& iter);.
Public Member Functions
virtual	~TreeSelection ()
GtkTreeSelection*	gobj ()
	Provides access to the underlying C GObject.
const GtkTreeSelection*	gobj () const
	Provides access to the underlying C GObject.
GtkTreeSelection*	gobj_copy ()
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
void	set_mode (SelectionMode type)
	Sets the selection mode of the selection.
SelectionMode	get_mode () const
	Gets the selection mode for selection.
void	set_select_function (const SlotSelect& slot)
	Sets the selection callback slot.
TreeView*	get_tree_view ()
	Returns the tree view associated with selection.
const TreeView*	get_tree_view () const
	Returns the tree view associated with selection.
Glib::RefPtr< TreeModel >	get_model ()
	Shortcut for get_tree_view()->get_model().
Glib::RefPtr< const TreeModel >	get_model () const
TreeModel::iterator	get_selected ()
	Get the currently selected row.
TreeModel::iterator	get_selected (Glib::RefPtr< TreeModel >& model)
	Get the currently selected row.
std::vector< TreeModel::Path >	get_selected_rows () const
	Creates a list of paths of all selected rows.
std::vector< TreeModel::Path >	get_selected_rows (Glib::RefPtr< TreeModel >& model)
	Creates a list of paths of all selected rows.
int	count_selected_rows () const
	Returns the number of rows that have been selected in tree.
void	selected_foreach_iter (const SlotForeachIter& slot) const
	Calls a callback slot for each selected node.
void	selected_foreach_path (const SlotForeachPath& slot) const
	Calls a callback slot for each selected node.
void	selected_foreach (const SlotForeachPathAndIter& slot) const
	Calls a callback slot for each selected node.
void	select (const TreeModel::Path& path)
	Select the row at path.
void	select (const TreeModel::iterator& iter)
	Selects the specified iterator.
void	select (const TreeModel::Row& row)
	Selects the specified iterator.
void	select (const TreeModel::Path& start_path, const TreeModel::Path& end_path)
	Selects a range of nodes, determined by start_path and end_path inclusive.
void	unselect (const TreeModel::Path& path)
	Unselects the row at path.
void	unselect (const TreeModel::Path& start_path, const TreeModel::Path& end_path)
	Unselects a range of nodes, determined by start_path and end_path inclusive.
void	unselect (const TreeModel::iterator& iter)
	Unselects the specified iterator.
bool	is_selected (const TreeModel::Path& path) const
	Returns `true` if the row pointed to by path is currently selected.
bool	is_selected (const TreeModel::iterator& iter) const
	Returns `true` if the row at iter is currently selected.
void	select_all ()
	Selects all the nodes.
void	unselect_all ()
	Unselects all the nodes.
Glib::PropertyProxy < SelectionMode >	property_mode ()
	Selection mode.
Glib::PropertyProxy_ReadOnly < SelectionMode >	property_mode () const
	Selection mode.
Glib::SignalProxy0< void >	signal_changed ()
Protected Member Functions
virtual void	on_changed ()
Related Functions
(Note that these are not member functions.)
Glib::RefPtr< Gtk::TreeSelection >	wrap (GtkTreeSelection* object, bool take_copy=false)
	A Glib::wrap() method for this object.

Detailed Description

Typedefed as Gtk::TreeView::Selection.

This is a helper object to manage the selection for a Gtk::TreeView widget.

It is automatically created when a new Gtk::TreeView widget is created, and cannot exist independently of this widget. The primary reason this class exists is for cleanliness of code and API. That is, there is no conceptual reason all these methods could not be methods on the Gtk::TreeView widget instead of a separate class.

The Gtk::TreeSelection object can be obtained from a Gtk::TreeView by calling Gtk::TreeView::get_selection(). It can be manipulated to check the selection status of the tree, as well as to select and deselect individual rows. Selection is done completely view-side. As a result, multiple views of the same model can have completely different selections. Additionally, you cannot change the selection of a row on the model that is not currently displayed by the view without expanding its parents first.

When monitoring the selection of a view, it's important to remember that the "changed" signal is mostly a hint. That is, it may only emit one signal when a range of rows is selected. Additionally, it may on occasion emit a "changed" signal when nothing has happened.

Member Typedef Documentation

typedef sigc::slot<void, const TreeModel::iterator&> Gtk::TreeSelection::SlotForeachIter

For example, void on_foreach(const Gtk::TreeModel::iterator& iter);.

Note that you cannot modify the tree or selection from within the callback function. As a result, get_selected_rows() might be more useful.

typedef sigc::slot<void, const TreeModel::Path&> Gtk::TreeSelection::SlotForeachPath

For example, void on_foreach(const Gtk::TreeModel::Path& path);.

Note that you cannot modify the tree or selection from within the callback function. As a result, get_selected_rows() might be more useful.

typedef sigc::slot<void, const TreeModel::Path&, const TreeModel::iterator&> Gtk::TreeSelection::SlotForeachPathAndIter

For example, void on_foreach(const Gtk::TreeModel::Path& path, const Gtk::TreeModel::iterator& iter);.

Note that you cannot modify the tree or selection from within the callback function. As a result, get_selected_rows() might be more useful.

typedef sigc::slot<bool, const Glib::RefPtr<TreeModel>&, const TreeModel::Path&, bool> Gtk::TreeSelection::SlotSelect

For instance, bool on_select_function(const Glib::RefPtr<TreeModel>& model, const TreeModel::Path& path, bool path_currently_selected) The select function should return true if the state of the node may be toggled, and false if the state of the node should be left unchanged.

Constructor & Destructor Documentation

virtual Gtk::TreeSelection::~TreeSelection ( ) [virtual]

Member Function Documentation

int Gtk::TreeSelection::count_selected_rows ( ) const

Returns the number of rows that have been selected in tree.

Since gtkmm 2.2:

Returns:: The number of rows selected.

SelectionMode Gtk::TreeSelection::get_mode ( ) const

Gets the selection mode for selection.

See set_mode().

Returns:: The current selection mode.

Glib::RefPtr<TreeModel> Gtk::TreeSelection::get_model ( )

Shortcut for get_tree_view()->get_model().

Returns:: The TreeModel associated with this TreeSelection.

Glib::RefPtr<const TreeModel> Gtk::TreeSelection::get_model ( ) const

TreeModel::iterator Gtk::TreeSelection::get_selected ( )

Get the currently selected row.

Returns:: The currently selected row.

Note:: This method won't work if the selection mode is Gtk::SELECTION_MULTIPLE. Use get_selected_rows() for multiple selections.

TreeModel::iterator Gtk::TreeSelection::get_selected ( Glib::RefPtr< TreeModel >& model )

Get the currently selected row.

Returns:: The currently selected row. Or end() if no rows were selected.

Return values:

model The current TreeModel.

Note:: This method won't work if the selection mode is Gtk::SELECTION_MULTIPLE. Use get_selected_rows() for multiple selections.

std::vector<TreeModel::Path> Gtk::TreeSelection::get_selected_rows ( ) const

Creates a list of paths of all selected rows.

Additionally, if you are planning on modifying the model after calling this function, you may want to convert the returned list into a list of GtkTreeRowReferences.

Returns:: a standard container containing a Gtk::Model::Path for each selected row.

std::vector<TreeModel::Path> Gtk::TreeSelection::get_selected_rows ( Glib::RefPtr< TreeModel >& model )

Creates a list of paths of all selected rows.

Additionally, if you are planning on modifying the model after calling this function, you may want to convert the returned list into a list of GtkTreeRowReferences.

Return values:

model The current TreeModel.

Returns:: a standard container containing a Gtk::Model::Path for each selected row.

const TreeView* Gtk::TreeSelection::get_tree_view ( ) const

Returns the tree view associated with selection.

Returns:: A Gtk::TreeView.

TreeView* Gtk::TreeSelection::get_tree_view ( )

Returns the tree view associated with selection.

Returns:: A Gtk::TreeView.

GtkTreeSelection* Gtk::TreeSelection::gobj ( ) [inline]

Provides access to the underlying C GObject.

Reimplemented from Glib::ObjectBase.

const GtkTreeSelection* Gtk::TreeSelection::gobj ( ) const [inline]

Provides access to the underlying C GObject.

Reimplemented from Glib::ObjectBase.

GtkTreeSelection* Gtk::TreeSelection::gobj_copy ( )

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

bool Gtk::TreeSelection::is_selected ( const TreeModel::iterator& iter ) const

Returns true if the row at iter is currently selected.

Parameters:

iter	A valid Gtk::TreeIter.

Returns:: true, if iter is selected.

bool Gtk::TreeSelection::is_selected ( const TreeModel::Path& path ) const

Returns true if the row pointed to by path is currently selected.

If path does not point to a valid location, false is returned

Parameters:

path	A Gtk::TreePath to check selection on.

Returns:: true if path is selected.

virtual void Gtk::TreeSelection::on_changed ( ) [protected, virtual]

Glib::PropertyProxy_ReadOnly<SelectionMode> Gtk::TreeSelection::property_mode ( ) const

Selection mode.

You rarely need to use properties because there are get_ and set_ methods for almost all of them.

Returns:: A PropertyProxy that allows you to get or set the property of the value, or receive notification when the value of the property changes.

Glib::PropertyProxy<SelectionMode> Gtk::TreeSelection::property_mode ( )

Selection mode.

You rarely need to use properties because there are get_ and set_ methods for almost all of them.

Returns:: A PropertyProxy that allows you to get or set the property of the value, or receive notification when the value of the property changes.

void Gtk::TreeSelection::select ( const TreeModel::Path& path )

Select the row at path.

Parameters:

path	The Gtk::TreePath to be selected.

void Gtk::TreeSelection::select ( const TreeModel::iterator& iter )

Selects the specified iterator.

Parameters:

iter	The Gtk::TreeIter to be selected.

void Gtk::TreeSelection::select	(	const TreeModel::Path&	start_path,
		const TreeModel::Path&	end_path
	)

Selects a range of nodes, determined by start_path and end_path inclusive.

selection must be set to Gtk::SELECTION_MULTIPLE mode.

Parameters:

start_path	The initial node of the range.
end_path	The final node of the range.

void Gtk::TreeSelection::select ( const TreeModel::Row& row )

Selects the specified iterator.

Parameters:

iter	The Gtk::TreeIter to be selected.

void Gtk::TreeSelection::select_all ( )

Selects all the nodes.

selection must be set to Gtk::SELECTION_MULTIPLE mode.

void Gtk::TreeSelection::selected_foreach ( const SlotForeachPathAndIter & slot ) const

Calls a callback slot for each selected node.

Note that you cannot modify the tree or selection from within the callback function. As a result, get_selected_rows() might be more useful.

Parameters:

slot	The function to call for each selected node.

void Gtk::TreeSelection::selected_foreach_iter ( const SlotForeachIter & slot ) const

Calls a callback slot for each selected node.

Note that you cannot modify the tree or selection from within the callback function. As a result, get_selected_rows() might be more useful.

Parameters:

slot	The function to call for each selected node.

void Gtk::TreeSelection::selected_foreach_path ( const SlotForeachPath & slot ) const

Calls a callback slot for each selected node.

Note that you cannot modify the tree or selection from within the callback function. As a result, get_selected_rows() might be more useful.

Parameters:

slot	The function to call for each selected node.

void Gtk::TreeSelection::set_mode ( SelectionMode type )

Sets the selection mode of the selection.

If the previous type was Gtk::SELECTION_MULTIPLE, then the anchor is kept selected, if it was previously selected.

Parameters:

type	The selection mode.

void Gtk::TreeSelection::set_select_function ( const SlotSelect & slot )

Sets the selection callback slot.

If set, this function is called before any node is selected or unselected, giving some control over which nodes are selected.

The select function should return true if the state of the node may be toggled, and FALSE if the state of the node should be left unchanged.

Parameters:

slot	The selection function.

Glib::SignalProxy0< void > Gtk::TreeSelection::signal_changed ( )

Prototype:: void on_my_changed()

void Gtk::TreeSelection::unselect ( const TreeModel::iterator& iter )

Unselects the specified iterator.

Parameters:

iter	The Gtk::TreeIter to be unselected.

void Gtk::TreeSelection::unselect	(	const TreeModel::Path&	start_path,
		const TreeModel::Path&	end_path
	)

Unselects a range of nodes, determined by start_path and end_path inclusive.

Since gtkmm 2.2:

Parameters:

start_path	The initial node of the range.
end_path	The initial node of the range.

void Gtk::TreeSelection::unselect ( const TreeModel::Path& path )

Unselects the row at path.

Parameters:

path	The Gtk::TreePath to be unselected.

void Gtk::TreeSelection::unselect_all ( )

Unselects all the nodes.

Friends And Related Function Documentation

Glib::RefPtr< Gtk::TreeSelection > wrap	(	GtkTreeSelection *	object,
		bool	take_copy = `false`
	)		`[related]`

A Glib::wrap() method for this object.

Parameters:

object	The C instance.
take_copy	False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns:: A C++ instance that wraps this C instance.

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

gtkmm/treeselection.h

gtkmm: Gtk::TreeSelection Class Reference

Public Types

Public Member Functions

Protected Member Functions

Related Functions

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation