Gtk.TreeRowReference

Fields

None

Methods

class deleted (proxy, path)
class inserted (proxy, path)
class new (model, path)
class new_proxy (proxy, model, path)
  copy ()
  free ()
  get_model ()
  get_path ()
  valid ()

Details

class Gtk.TreeRowReference

A Gtk.TreeRowReference tracks model changes so that it always refers to the same row (a Gtk.TreePath refers to a position, not a fixed row). Create a new Gtk.TreeRowReference with Gtk.TreeRowReference.new().

classmethod deleted(proxy, path)[source]
Parameters:

Lets a set of row reference created by Gtk.TreeRowReference.new_proxy() know that the model emitted the Gtk.TreeModel ::row-deleted signal.

classmethod inserted(proxy, path)[source]
Parameters:

Lets a set of row reference created by Gtk.TreeRowReference.new_proxy() know that the model emitted the Gtk.TreeModel ::row-inserted signal.

classmethod new(model, path)[source]
Parameters:
Returns:

a newly allocated Gtk.TreeRowReference, or None

Return type:

Gtk.TreeRowReference

Creates a row reference based on path.

This reference will keep pointing to the node pointed to by path, so long as it exists. Any changes that occur on model are propagated, and the path is updated appropriately. If path isn’t a valid path in model, then None is returned.

classmethod new_proxy(proxy, model, path)[source]
Parameters:
Returns:

a newly allocated Gtk.TreeRowReference, or None

Return type:

Gtk.TreeRowReference

You do not need to use this function.

Creates a row reference based on path.

This reference will keep pointing to the node pointed to by path, so long as it exists. If path isn’t a valid path in model, then None is returned. However, unlike references created with Gtk.TreeRowReference.new(), it does not listen to the model for changes. The creator of the row reference must do this explicitly using Gtk.TreeRowReference.inserted(), Gtk.TreeRowReference.deleted(), gtk_tree_row_reference_reordered().

These functions must be called exactly once per proxy when the corresponding signal on the model is emitted. This single call updates all row references for that proxy. Since built-in GTK+ objects like Gtk.TreeView already use this mechanism internally, using them as the proxy object will produce unpredictable results. Further more, passing the same object as model and proxy doesn’t work for reasons of internal implementation.

This type of row reference is primarily meant by structures that need to carefully monitor exactly when a row reference updates itself, and is not generally needed by most applications.

copy()[source]
Returns:a copy of self
Return type:Gtk.TreeRowReference

Copies a Gtk.TreeRowReference.

New in version 2.2.

free()[source]

Free’s self. self may be None

get_model()[source]
Returns:the model
Return type:Gtk.TreeModel

Returns the model that the row reference is monitoring.

New in version 2.8.

get_path()[source]
Returns:a current path, or None
Return type:Gtk.TreePath or None

Returns a path that the row reference currently points to, or None if the path pointed to is no longer valid.

valid()[source]
Returns:True if self points to a valid path
Return type:bool

Returns True if the self is non-None and refers to a current valid path.