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-----------------------------------------------------------------------
-- GtkAda - Ada95 binding for Gtk+/Gnome --
-- --
-- Copyright (C) 2006 AdaCore --
-- --
-- This library is free software; you can redistribute it and/or --
-- modify it under the terms of the GNU General Public --
-- License as published by the Free Software Foundation; either --
-- version 2 of the License, or (at your option) any later version. --
-- --
-- This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public --
-- License along with this library; if not, write to the --
-- Free Software Foundation, Inc., 59 Temple Place - Suite 330, --
-- Boston, MA 02111-1307, USA. --
-- --
-----------------------------------------------------------------------
with Ada.Unchecked_Conversion;
with Ada.Unchecked_Deallocation;
with Gtk.Enums; use Gtk.Enums;
with Gtk.Tree_Model; use Gtk.Tree_Model;
with System; use System;
package body Gtk.Tree_Sortable is
type Gtk_Tree_Iter_Access is access all Gtk_Tree_Iter;
function To_Iter is new Ada.Unchecked_Conversion
(System.Address, Gtk_Tree_Iter_Access);
function Compare_Func_Wrapper
(Model, A, B : System.Address;
Data : Gtk_Tree_Iter_Compare_Func) return Gint;
pragma Convention (C, Compare_Func_Wrapper);
-- Internal wrapper for a Gtk_Tree_Iter_Compare_Func
------------------------
-- Get_Sort_Column_Id --
------------------------
procedure Get_Sort_Column_Id
(Sortable : Gtk_Tree_Sortable;
Sort_Column_Id : out Gint;
Order : out Gtk.Enums.Gtk_Sort_Type)
is
function Internal
(Sortable : Gtk_Tree_Sortable;
Sort_Column_Id : access Gint;
Order : access Gtk_Sort_Type)
return Gboolean;
pragma Import (C, Internal, "gtk_tree_sortable_get_sort_column_id");
Id : aliased Gint;
Ord : aliased Gtk_Sort_Type;
Tmp : constant Gboolean :=
Internal (Sortable, Id'Access, Ord'Access);
pragma Unreferenced (Tmp);
begin
Sort_Column_Id := Id;
Order := Ord;
end Get_Sort_Column_Id;
--------------------------
-- Compare_Func_Wrapper --
--------------------------
function Compare_Func_Wrapper
(Model, A, B : System.Address;
Data : Gtk_Tree_Iter_Compare_Func) return Gint
is
Stub : Gtk_Tree_Model_Record;
AI : constant Gtk_Tree_Iter_Access := To_Iter (A);
BI : constant Gtk_Tree_Iter_Access := To_Iter (B);
begin
return Data
(Gtk_Tree_Model (Get_User_Data (Model, Stub)),
AI.all, BI.all);
end Compare_Func_Wrapper;
---------------------------
-- Set_Default_Sort_Func --
---------------------------
procedure Set_Default_Sort_Func
(Sortable : Gtk_Tree_Sortable;
Sort_Func : Gtk_Tree_Iter_Compare_Func)
is
procedure Internal
(Sortable : Gtk_Tree_Sortable;
Sort_Func : System.Address;
User_Data : Gtk_Tree_Iter_Compare_Func;
Destroy : System.Address := System.Null_Address);
pragma Import (C, Internal, "gtk_tree_sortable_set_default_sort_func");
begin
Internal (Sortable, Compare_Func_Wrapper'Address, Sort_Func);
end Set_Default_Sort_Func;
---------------------------
-- Has_Default_Sort_Func --
---------------------------
function Has_Default_Sort_Func
(Sortable : Gtk_Tree_Sortable) return Boolean
is
function Internal (Sortable : Gtk_Tree_Sortable) return Gboolean;
pragma Import (C, Internal, "gtk_tree_sortable_has_default_sort_func");
begin
return Boolean'Val (Internal (Sortable));
end Has_Default_Sort_Func;
-------------------
-- Set_Sort_Func --
-------------------
procedure Set_Sort_Func
(Sortable : Gtk_Tree_Sortable;
Sort_Column_Id : Gint;
Sort_Func : Gtk_Tree_Iter_Compare_Func)
is
procedure Internal
(Sortable : Gtk_Tree_Sortable;
Sort_Column_Id : Gint;
Sort_Func : System.Address;
User_Data : Gtk_Tree_Iter_Compare_Func;
Destroy : System.Address := System.Null_Address);
pragma Import (C, Internal, "gtk_tree_sortable_set_sort_func");
begin
Internal (Sortable, Sort_Column_Id,
Compare_Func_Wrapper'Address, Sort_Func);
end Set_Sort_Func;
-------------------
-- Compare_Funcs --
-------------------
package body Compare_Funcs is
procedure Free is new Ada.Unchecked_Deallocation
(Data_Type, Data_Type_Access);
procedure Free is new Ada.Unchecked_Deallocation
(Data_Type_Record, Data_Type_Record_Access);
---------------------------
-- Set_Default_Sort_Func --
---------------------------
procedure Set_Default_Sort_Func
(Sortable : Gtk_Tree_Sortable;
Sort_Func : Gtk_Tree_Iter_Compare_Func;
User_Data : Data_Type;
Destroy : Destroy_Notify := null)
is
procedure Internal
(Sortable : Gtk_Tree_Sortable;
Sort_Func : System.Address;
User_Data : Data_Type_Record_Access;
Destroy : System.Address);
pragma Import
(C, Internal, "gtk_tree_sortable_set_default_sort_func");
begin
Internal
(Sortable, Internal_Compare_Func'Address,
new Data_Type_Record'
(Func => Sort_Func,
Destroy => Destroy,
Data => new Data_Type'(User_Data)),
Internal_Destroy_Notify'Address);
end Set_Default_Sort_Func;
-------------------
-- Set_Sort_Func --
-------------------
procedure Set_Sort_Func
(Sortable : Gtk_Tree_Sortable;
Sort_Column_Id : Gint;
Sort_Func : Gtk_Tree_Iter_Compare_Func;
User_Data : Data_Type;
Destroy : Destroy_Notify := null)
is
procedure Internal
(Sortable : Gtk_Tree_Sortable;
Sort_Column_Id : Gint;
Sort_Func : System.Address;
User_Data : Data_Type_Record_Access;
Destroy : System.Address);
pragma Import
(C, Internal, "gtk_tree_sortable_set_sort_func");
begin
Internal
(Sortable, Sort_Column_Id, Internal_Compare_Func'Address,
new Data_Type_Record'
(Func => Sort_Func,
Destroy => Destroy,
Data => new Data_Type'(User_Data)),
Internal_Destroy_Notify'Address);
end Set_Sort_Func;
-----------------------------
-- Internal_Destroy_Notify --
-----------------------------
procedure Internal_Destroy_Notify (Data : Data_Type_Record_Access) is
D : Data_Type_Record_Access := Data;
begin
if Data.Destroy /= null then
Data.Destroy (Data.Data.all);
end if;
Free (Data.Data);
Free (D);
end Internal_Destroy_Notify;
---------------------------
-- Internal_Compare_Func --
---------------------------
function Internal_Compare_Func
(Model : System.Address;
A, B : System.Address;
Data : Data_Type_Record_Access) return Gint
is
Stub : Gtk_Tree_Model_Record;
AI : constant Gtk_Tree_Iter_Access := To_Iter (A);
BI : constant Gtk_Tree_Iter_Access := To_Iter (B);
begin
return Data.Func
(Gtk_Tree_Model (Get_User_Data (Model, Stub)),
AI.all, BI.all, Data.Data.all);
end Internal_Compare_Func;
end Compare_Funcs;
end Gtk.Tree_Sortable;
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