Index

Package: Tree_Row_Reference

Description

package Gtk.Tree_Row_Reference is
A GtkTreeRowReference tracks model changes so that it always refers to the same row (a Gtk.Tree_Model.Gtk_Tree_Path refers to a position, not a fixed row). Create a new GtkTreeRowReference with gtk_tree_row_reference_new.

Classes

Gtk_Tree_Row_Reference 

type Gtk_Tree_Row_Reference is new Glib.C_Boxed with null record;

Ancestors:

Primitive operations:

From_Object_Free
Gtk_New_Proxy
Gtk_Tree_Row_Reference_New
Gtk_Tree_Row_Reference_New_Proxy

Constants & Global variables

Null_Gtk_Tree_Row_Reference (Gtk_Tree_Row_Reference) 

Null_Gtk_Tree_Row_Reference : constant Gtk_Tree_Row_Reference;

Subprograms & Entries

From_Object 

function From_Object 
(Object: System.Address) return Gtk_Tree_Row_Reference;

From_Object_Free 

function From_Object_Free 
(B: access Gtk_Tree_Row_Reference'Class) return Gtk_Tree_Row_Reference;

Gtk_New 

procedure Gtk_New 
(Reference: out Gtk_Tree_Row_Reference;
Model: Gtk.Tree_Model.Gtk_Tree_Model;
Path: Gtk.Tree_Model.Gtk_Tree_Path);
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 null is returned. "model": a Gtk.Tree_Model.Gtk_Tree_Model "path": a valid Gtk.Tree_Model.Gtk_Tree_Path to monitor

Gtk_Tree_Row_Reference_New 

function Gtk_Tree_Row_Reference_New 
(Model: Gtk.Tree_Model.Gtk_Tree_Model;
Path: Gtk.Tree_Model.Gtk_Tree_Path) return Gtk_Tree_Row_Reference;
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 null is returned. "model": a Gtk.Tree_Model.Gtk_Tree_Model "path": a valid Gtk.Tree_Model.Gtk_Tree_Path to monitor

Gtk_New_Proxy 

procedure Gtk_New_Proxy 
(Reference: out Gtk_Tree_Row_Reference;
Proxy: not null access Glib.Object.GObject_Record'Class;
Model: Gtk.Tree_Model.Gtk_Tree_Model;
Path: Gtk.Tree_Model.Gtk_Tree_Path);
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 null is returned. However, unlike references created with gtk_tree_row_reference_new, it does not listen to the model for changes. The creator of the row reference must do this explicitly using Gtk.Tree_Row_Reference.Inserted, Gtk.Tree_Row_Reference.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.Tree_View.Gtk_Tree_View 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. "proxy": a proxy Glib.Object.GObject "model": a Gtk.Tree_Model.Gtk_Tree_Model "path": a valid Gtk.Tree_Model.Gtk_Tree_Path to monitor

Gtk_Tree_Row_Reference_New_Proxy 

function Gtk_Tree_Row_Reference_New_Proxy 
(Proxy: not null access Glib.Object.GObject_Record'Class;
Model: Gtk.Tree_Model.Gtk_Tree_Model;
Path: Gtk.Tree_Model.Gtk_Tree_Path) return Gtk_Tree_Row_Reference;
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 null is returned. However, unlike references created with gtk_tree_row_reference_new, it does not listen to the model for changes. The creator of the row reference must do this explicitly using Gtk.Tree_Row_Reference.Inserted, Gtk.Tree_Row_Reference.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.Tree_View.Gtk_Tree_View 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. "proxy": a proxy Glib.Object.GObject "model": a Gtk.Tree_Model.Gtk_Tree_Model "path": a valid Gtk.Tree_Model.Gtk_Tree_Path to monitor

Get_Type 

function Get_Type return Glib.GType;

Copy 

function Copy 
(Reference: Gtk_Tree_Row_Reference) return Gtk_Tree_Row_Reference;
Copies a Gtk.Tree_Row_Reference.Gtk_Tree_Row_Reference. Since: gtk+ 2.2

Free 

procedure Free 
(Reference: Gtk_Tree_Row_Reference);
Free's Reference. Reference may be null

Get_Model 

function Get_Model 
(Reference: Gtk_Tree_Row_Reference) return Gtk.Tree_Model.Gtk_Tree_Model;
Returns the model that the row reference is monitoring. Since: gtk+ 2.8

Get_Path 

function Get_Path 
(Reference: Gtk_Tree_Row_Reference) return Gtk.Tree_Model.Gtk_Tree_Path;
Returns a path that the row reference currently points to, or null if the path pointed to is no longer valid.

Valid 

function Valid 
(Reference: Gtk_Tree_Row_Reference) return Boolean;
Returns True if the Reference is non-null and refers to a current valid path.

Deleted 

procedure Deleted 
(Proxy: not null access Glib.Object.GObject_Record'Class;
Path: Gtk.Tree_Model.Gtk_Tree_Path);
Lets a set of row reference created by gtk_tree_row_reference_new_proxy know that the model emitted the Gtk.Tree_Model.Gtk_Tree_Model::row-deleted signal. "proxy": a Glib.Object.GObject "path": the path position that was deleted

Inserted 

procedure Inserted 
(Proxy: not null access Glib.Object.GObject_Record'Class;
Path: Gtk.Tree_Model.Gtk_Tree_Path);
Lets a set of row reference created by gtk_tree_row_reference_new_proxy know that the model emitted the Gtk.Tree_Model.Gtk_Tree_Model::row-inserted signal. "proxy": a Glib.Object.GObject "path": the row position that was inserted

Reordered 

procedure Reordered 
(Proxy: not null access Glib.Object.GObject_Record'Class;
Path: Gtk.Tree_Model.Gtk_Tree_Path;
Iter: Gtk.Tree_Model.Gtk_Tree_Iter;
New_Order: in out Gint);
Lets a set of row reference created by gtk_tree_row_reference_new_proxy know that the model emitted the Gtk.Tree_Model.Gtk_Tree_Model::rows-reordered signal. "proxy": a Glib.Object.GObject "path": the parent path of the reordered signal "iter": the iter pointing to the parent of the reordered "new_order": the new order of rows