TreeSelection

The gtk.TreeSelection object is a helper object to manage the selection for a gtk.TreeView widget. The gtk.TreeSelection object is automatically created when a new gtk.TreeView widget is created, and cannot exist independently of this widget. The primary reason the gtk.TreeSelection objects exists is for cleanliness of code and API. That is, there is no conceptual reason all these functions could not be methods on the gtk.TreeView widget instead of a separate function.

The gtk.TreeSelection object is gotten from a gtk.TreeView by calling TreeView.getSelection. It can be manipulated to check the selection status of the tree, as well as 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.

One of the important things to remember when monitoring the selection of a view is 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 (mostly as a result of programmers calling select_row on an already selected row).

class TreeSelection : ObjectG {

protected

GtkTreeSelection* gtkTreeSelection;

GtkTreeSelection* getTreeSelectionStruct(bool transferOwnership);

void* getStruct();

this(GtkTreeSelection* gtkTreeSelection, bool ownedRef);

TreeIter getSelected();

TreePath[] getSelectedRows(TreeModelIF model);

static GType getType();

int countSelectedRows();

GtkSelectionMode getMode();

GtkTreeSelectionFunc getSelectFunction();

bool getSelected(TreeModelIF model, TreeIter iter);

TreeView getTreeView();

void* getUserData();

bool iterIsSelected(TreeIter iter);

bool pathIsSelected(TreePath path);

void selectAll();

void selectIter(TreeIter iter);

void selectPath(TreePath path);

void selectRange(TreePath startPath, TreePath endPath);

void selectedForeach(GtkTreeSelectionForeachFunc func, void* data);

void setMode(GtkSelectionMode type);

void setSelectFunction(GtkTreeSelectionFunc func, void* data, GDestroyNotify destroy);

void unselectAll();

void unselectIter(TreeIter iter);

void unselectPath(TreePath path);

void unselectRange(TreePath startPath, TreePath endPath);

gulong addOnChanged(void delegate(TreeSelection) dlg, ConnectFlags connectFlags);

}

Constructors

this this(GtkTreeSelection* gtkTreeSelection, bool ownedRef): Sets our main struct and passes it to the parent class.

Members

Functions

addOnChanged gulong addOnChanged(void delegate(TreeSelection) dlg, ConnectFlags connectFlags): Emitted whenever the selection has (possibly) changed. Please note that this signal is mostly a hint. It may only be emitted once when a range of rows are selected, and it may occasionally be emitted when nothing has happened.
countSelectedRows int countSelectedRows(): Returns the number of rows that have been selected in tree.
getMode GtkSelectionMode getMode(): Gets the selection mode for selection. See TreeSelection.setMode.
getSelectFunction GtkTreeSelectionFunc getSelectFunction(): Returns the current selection function.
getSelected TreeIter getSelected(): Returns an TreeIter set to the currently selected node if selection is set to Selection.SINGLE or Selection.BROWSE. This function will not work if you use selection is Selection.MULTIPLE.
getSelected bool getSelected(TreeModelIF model, TreeIter iter): Sets iter to the currently selected node if selection is set to GTK_SELECTION_SINGLE or GTK_SELECTION_BROWSE iter may be NULL if you just want to test if selection has any selected nodes. model is filled with the current model as a convenience. This function will not work if you use selection is GTK_SELECTION_MULTIPLE
getSelectedRows TreePath[] getSelectedRows(TreeModelIF model): Creates a list of path 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 TreeRowReferences.
getStruct void* getStruct(): the main Gtk struct as a void*
getTreeSelectionStruct GtkTreeSelection* getTreeSelectionStruct(bool transferOwnership): Get the main Gtk struct
getTreeView TreeView getTreeView(): Returns the tree view associated with selection.
getUserData void* getUserData(): Returns the user data for the selection function.
iterIsSelected bool iterIsSelected(TreeIter iter): Returns TRUE if the row at iter is currently selected.
pathIsSelected bool pathIsSelected(TreePath path): Returns TRUE if the row pointed to by path is currently selected. If path does not point to a valid location, FALSE is returned
selectAll void selectAll(): Selects all the nodes. selection must be set to GTK_SELECTION_MULTIPLE mode.
selectIter void selectIter(TreeIter iter): Selects the specified iterator.
selectPath void selectPath(TreePath path): Select the row at path.
selectRange void selectRange(TreePath startPath, TreePath endPath): Selects a range of nodes, determined by start_path and end_path inclusive. selection must be set to GTK_SELECTION_MULTIPLE mode.
selectedForeach void selectedForeach(GtkTreeSelectionForeachFunc func, void* data): Calls a function for each selected node. Note that you cannot modify the tree or selection from within this function. As a result, TreeSelection.getSelectedRows might be more useful.
setMode void setMode(GtkSelectionMode 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.
setSelectFunction void setSelectFunction(GtkTreeSelectionFunc func, void* data, GDestroyNotify destroy): Sets the selection function.
unselectAll void unselectAll(): Unselects all the nodes.
unselectIter void unselectIter(TreeIter iter): Unselects the specified iterator.
unselectPath void unselectPath(TreePath path): Unselects the row at path.
unselectRange void unselectRange(TreePath startPath, TreePath endPath): Unselects a range of nodes, determined by start_path and end_path inclusive.

Static functions

getType GType getType()

Variables

gtkTreeSelection GtkTreeSelection* gtkTreeSelection;: the main Gtk struct

Inherited Members

From ObjectG

gObject GObject* gObject;: the main Gtk struct
getObjectGStruct GObject* getObjectGStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
opCast T opCast()
getDObject RT getDObject(U obj, bool ownedRef): Gets a D Object from the objects table of associations.
setProperty void setProperty(string propertyName, T value)
addOnNotify gulong addOnNotify(void delegate(ParamSpec, ObjectG) dlg, string property, ConnectFlags connectFlags): The notify signal is emitted on an object when one of its properties has been changed. Note that getting this signal doesn't guarantee that the value of the property has actually changed, it may also be emitted when the setter for the property is called to reinstate the previous value.
getType GType getType()
compatControl size_t compatControl(size_t what, void* data)
interfaceFindProperty ParamSpec interfaceFindProperty(TypeInterface gIface, string propertyName): Find the gobject.ParamSpec with the given name for an interface. Generally, the interface vtable passed in as g_iface will be the default vtable from g_type_default_interface_ref(), or, if you know the interface has already been loaded, g_type_default_interface_peek().
interfaceInstallProperty void interfaceInstallProperty(TypeInterface gIface, ParamSpec pspec): Add a property to an interface; this is only useful for interfaces that are added to GObject-derived types. Adding a property to an interface forces all objects classes with that interface to have a compatible property. The compatible property could be a newly created gobject.ParamSpec, but normally ObjectClass.overrideProperty will be used so that the object class only needs to provide an implementation and inherits the property description, default value, bounds, and so forth from the interface property.
interfaceListProperties ParamSpec[] interfaceListProperties(TypeInterface gIface): Lists the properties of an interface.Generally, the interface vtable passed in as g_iface will be the default vtable from g_type_default_interface_ref(), or, if you know the interface has already been loaded, g_type_default_interface_peek().
addToggleRef void addToggleRef(GToggleNotify notify, void* data): Increases the reference count of the object by one and sets a callback to be called when all other references to the object are dropped, or when this is already the last reference to the object and another reference is established.
addWeakPointer void addWeakPointer(void* weakPointerLocation): Adds a weak reference from weak_pointer to object to indicate that the pointer located at weak_pointer_location is only valid during the lifetime of object. When the object is finalized, weak_pointer will be set to NULL.
bindProperty Binding bindProperty(string sourceProperty, ObjectG target, string targetProperty, GBindingFlags flags): Creates a binding between source_property on source and target_property on target. Whenever the source_property is changed the target_property is updated using the same value. For instance:
bindPropertyFull Binding bindPropertyFull(string sourceProperty, ObjectG target, string targetProperty, GBindingFlags flags, GBindingTransformFunc transformTo, GBindingTransformFunc transformFrom, void* userData, GDestroyNotify notify): Complete version of g_object_bind_property().
bindPropertyWithClosures Binding bindPropertyWithClosures(string sourceProperty, ObjectG target, string targetProperty, GBindingFlags flags, Closure transformTo, Closure transformFrom): Creates a binding between source_property on source and target_property on target, allowing you to set the transformation functions to be used by the binding.
dupData void* dupData(string key, GDuplicateFunc dupFunc, void* userData): This is a variant of g_object_get_data() which returns a 'duplicate' of the value. dup_func defines the meaning of 'duplicate' in this context, it could e.g. take a reference on a ref-counted object.
dupQdata void* dupQdata(GQuark quark, GDuplicateFunc dupFunc, void* userData): This is a variant of g_object_get_qdata() which returns a 'duplicate' of the value. dup_func defines the meaning of 'duplicate' in this context, it could e.g. take a reference on a ref-counted object.
forceFloating void forceFloating(): This function is intended for GObject implementations to re-enforce a floating[floating-ref] object reference. Doing this is seldom required: all GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling g_object_ref_sink().
freezeNotify void freezeNotify(): Increases the freeze count on object. If the freeze count is non-zero, the emission of "notify" signals on object is stopped. The signals are queued until the freeze count is decreased to zero. Duplicate notifications are squashed so that at most one notify signal is emitted for each property modified while the object is frozen.
getData void* getData(string key): Gets a named field from the objects table of associations (see g_object_set_data()).
getProperty void getProperty(string propertyName, Value value): Gets a property of an object.
getQdata void* getQdata(GQuark quark): This function gets back user data pointers stored via g_object_set_qdata().
getValist void getValist(string firstPropertyName, void* varArgs): Gets properties of an object.
getv void getv(string[] names, Value[] values): Gets n_properties properties for an object. Obtained properties will be set to values. All properties must be valid. Warnings will be emitted and undefined behaviour may result if invalid properties are passed in.
isFloating bool isFloating(): Checks whether object has a floating[floating-ref] reference.
notify void notify(string propertyName): Emits a "notify" signal for the property property_name on object.
notifyByPspec void notifyByPspec(ParamSpec pspec): Emits a "notify" signal for the property specified by pspec on object.
ref_ ObjectG ref_(): Increases the reference count of object.
refSink ObjectG refSink(): Increase the reference count of object, and possibly remove the floating[floating-ref] reference, if object has a floating reference.
removeToggleRef void removeToggleRef(GToggleNotify notify, void* data): Removes a reference added with g_object_add_toggle_ref(). The reference count of the object is decreased by one.
removeWeakPointer void removeWeakPointer(void* weakPointerLocation): Removes a weak reference from object that was previously added using g_object_add_weak_pointer(). The weak_pointer_location has to match the one used with g_object_add_weak_pointer().
replaceData bool replaceData(string key, void* oldval, void* newval, GDestroyNotify destroy, GDestroyNotify oldDestroy): Compares the user data for the key key on object with oldval, and if they are the same, replaces oldval with newval.
replaceQdata bool replaceQdata(GQuark quark, void* oldval, void* newval, GDestroyNotify destroy, GDestroyNotify oldDestroy): Compares the user data for the key quark on object with oldval, and if they are the same, replaces oldval with newval.
runDispose void runDispose(): Releases all references to other objects. This can be used to break reference cycles.
setData void setData(string key, void* data): Each object carries around a table of associations from strings to pointers. This function lets you set an association.
setDataFull void setDataFull(string key, void* data, GDestroyNotify destroy): Like g_object_set_data() except it adds notification for when the association is destroyed, either by setting it to a different value or when the object is destroyed.
setProperty void setProperty(string propertyName, Value value): Sets a property on an object.
setQdata void setQdata(GQuark quark, void* data): This sets an opaque, named pointer on an object. The name is specified through a GQuark (retrived e.g. via g_quark_from_static_string()), and the pointer can be gotten back from the object with g_object_get_qdata() until the object is finalized. Setting a previously set user data pointer, overrides (frees) the old pointer set, using NULL as pointer essentially removes the data stored.
setQdataFull void setQdataFull(GQuark quark, void* data, GDestroyNotify destroy): This function works like g_object_set_qdata(), but in addition, a void (*destroy) (gpointer) function may be specified which is called with data as argument when the object is finalized, or the data is being overwritten by a call to g_object_set_qdata() with the same quark.
setValist void setValist(string firstPropertyName, void* varArgs): Sets properties on an object.
setv void setv(string[] names, Value[] values): Sets n_properties properties for an object. Properties to be set will be taken from values. All properties must be valid. Warnings will be emitted and undefined behaviour may result if invalid properties are passed in.
stealData void* stealData(string key): Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
stealQdata void* stealQdata(GQuark quark): This function gets back user data pointers stored via g_object_set_qdata() and removes the data from object without invoking its destroy() function (if any was set). Usually, calling this function is only required to update user data pointers with a destroy notifier, for example:
thawNotify void thawNotify(): Reverts the effect of a previous call to g_object_freeze_notify(). The freeze count is decreased on object and when it reaches zero, queued "notify" signals are emitted.
unref void unref(): Decreases the reference count of object. When its reference count drops to 0, the object is finalized (i.e. its memory is freed).
watchClosure void watchClosure(Closure closure): This function essentially limits the life time of the closure to the life time of the object. That is, when the object is finalized, the closure is invalidated by calling Closure.invalidate on it, in order to prevent invocations of the closure with a finalized (nonexisting) object. Also, g_object_ref() and g_object_unref() are added as marshal guards to the closure, to ensure that an extra reference count is held on object during invocation of the closure. Usually, this function will be called on closures that use this object as closure data.
weakRef void weakRef(GWeakNotify notify, void* data): Adds a weak reference callback to an object. Weak references are used for notification when an object is finalized. They are called "weak references" because they allow you to safely hold a pointer to an object without calling g_object_ref() (g_object_ref() adds a strong reference, that is, forces the object to stay alive).
weakUnref void weakUnref(GWeakNotify notify, void* data): Removes a weak reference callback to an object.
clearObject void clearObject(ObjectG objectPtr): Clears a reference to a GObject

gtk TreeSelection classes

TreeSelection