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440 | ------------------------------------------------------------------------------
-- --
-- Copyright (C) 1998-2000 E. Briot, J. Brobecker and A. Charlet --
-- Copyright (C) 2000-2022, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, 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 MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
------------------------------------------------------------------------------
pragma Style_Checks (Off);
pragma Warnings (Off, "*is already use-visible*");
with Ada.Unchecked_Conversion;
with Glib.Values; use Glib.Values;
with Gtk.Arguments; use Gtk.Arguments;
with Gtkada.Bindings; use Gtkada.Bindings;
package body Gtk.Tree_Sortable is
procedure C_Gtk_Tree_Sortable_Set_Default_Sort_Func
(Sortable : Gtk_Tree_Sortable;
Sort_Func : System.Address;
User_Data : System.Address;
Destroy : System.Address);
pragma Import (C, C_Gtk_Tree_Sortable_Set_Default_Sort_Func, "gtk_tree_sortable_set_default_sort_func");
-- Sets the default comparison function used when sorting to be Sort_Func.
-- If the current sort column id of Sortable is
-- GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID, then the model will sort using
-- this function.
-- If Sort_Func is null, then there will be no default comparison
-- function. This means that once the model has been sorted, it can't go
-- back to the default state. In this case, when the current sort column id
-- of Sortable is GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID, the model will
-- be unsorted.
-- "sort_func": The comparison function
-- "user_data": User data to pass to Sort_Func, or null
-- "destroy": Destroy notifier of User_Data, or null
procedure C_Gtk_Tree_Sortable_Set_Sort_Func
(Sortable : Gtk_Tree_Sortable;
Sort_Column_Id : Glib.Gint;
Sort_Func : System.Address;
User_Data : System.Address;
Destroy : System.Address);
pragma Import (C, C_Gtk_Tree_Sortable_Set_Sort_Func, "gtk_tree_sortable_set_sort_func");
-- Sets the comparison function used when sorting to be Sort_Func. If the
-- current sort column id of Sortable is the same as Sort_Column_Id, then
-- the model will sort using this function.
-- "sort_column_id": the sort column id to set the function for
-- "sort_func": The comparison function
-- "user_data": User data to pass to Sort_Func, or null
-- "destroy": Destroy notifier of User_Data, or null
function To_Gtk_Tree_Iter_Compare_Func is new Ada.Unchecked_Conversion
(System.Address, Gtk_Tree_Iter_Compare_Func);
function To_Address is new Ada.Unchecked_Conversion
(Gtk_Tree_Iter_Compare_Func, System.Address);
function Internal_Gtk_Tree_Iter_Compare_Func
(Model : Gtk.Tree_Model.Gtk_Tree_Model;
A : access Gtk.Tree_Model.Gtk_Tree_Iter;
B : access Gtk.Tree_Model.Gtk_Tree_Iter;
User_Data : System.Address) return Glib.Gint;
pragma Convention (C, Internal_Gtk_Tree_Iter_Compare_Func);
-- "model": The Gtk.Tree_Model.Gtk_Tree_Model the comparison is within
-- "a": A Gtk.Tree_Model.Gtk_Tree_Iter in Model
-- "b": Another Gtk.Tree_Model.Gtk_Tree_Iter in Model
-- "user_data": Data passed when the compare func is assigned e.g. by
-- Gtk.Tree_Sortable.Set_Sort_Func
-----------------------------------------
-- Internal_Gtk_Tree_Iter_Compare_Func --
-----------------------------------------
function Internal_Gtk_Tree_Iter_Compare_Func
(Model : Gtk.Tree_Model.Gtk_Tree_Model;
A : access Gtk.Tree_Model.Gtk_Tree_Iter;
B : access Gtk.Tree_Model.Gtk_Tree_Iter;
User_Data : System.Address) return Glib.Gint
is
Func : constant Gtk_Tree_Iter_Compare_Func := To_Gtk_Tree_Iter_Compare_Func (User_Data);
begin
return Func (Model, A.all, B.all);
end Internal_Gtk_Tree_Iter_Compare_Func;
---------------------------
-- Has_Default_Sort_Func --
---------------------------
function Has_Default_Sort_Func
(Sortable : Gtk_Tree_Sortable) return Boolean
is
function Internal (Sortable : Gtk_Tree_Sortable) return Glib.Gboolean;
pragma Import (C, Internal, "gtk_tree_sortable_has_default_sort_func");
begin
return Internal (Sortable) /= 0;
end Has_Default_Sort_Func;
---------------------------
-- Set_Default_Sort_Func --
---------------------------
procedure Set_Default_Sort_Func
(Sortable : Gtk_Tree_Sortable;
Sort_Func : Gtk_Tree_Iter_Compare_Func)
is
begin
if Sort_Func = null then
C_Gtk_Tree_Sortable_Set_Default_Sort_Func (Sortable, System.Null_Address, System.Null_Address, System.Null_Address);
else
C_Gtk_Tree_Sortable_Set_Default_Sort_Func (Sortable, Internal_Gtk_Tree_Iter_Compare_Func'Address, To_Address (Sort_Func), System.Null_Address);
end if;
end Set_Default_Sort_Func;
package body Set_Default_Sort_Func_User_Data is
package Users is new Glib.Object.User_Data_Closure
(User_Data_Type, Destroy);
function To_Gtk_Tree_Iter_Compare_Func is new Ada.Unchecked_Conversion
(System.Address, Gtk_Tree_Iter_Compare_Func);
function To_Address is new Ada.Unchecked_Conversion
(Gtk_Tree_Iter_Compare_Func, System.Address);
function Internal_Cb
(Model : Gtk.Tree_Model.Gtk_Tree_Model;
A : access Gtk.Tree_Model.Gtk_Tree_Iter;
B : access Gtk.Tree_Model.Gtk_Tree_Iter;
User_Data : System.Address) return Glib.Gint;
pragma Convention (C, Internal_Cb);
-- A GtkTreeIterCompareFunc should return a negative integer, zero, or
-- a positive integer if A sorts before B, A sorts with B, or A sorts
-- after B respectively. If two iters compare as equal, their order in
-- the sorted model is undefined. In order to ensure that the
-- Gtk.Tree_Sortable.Gtk_Tree_Sortable behaves as expected, the
-- GtkTreeIterCompareFunc must define a partial order on the model, i.e.
-- it must be reflexive, antisymmetric and transitive.
-- For example, if Model is a product catalogue, then a compare
-- function for the "price" column could be one which returns
-- `price_of(A) - price_of(B)`.
-- "model": The Gtk.Tree_Model.Gtk_Tree_Model the comparison is within
-- "a": A Gtk.Tree_Model.Gtk_Tree_Iter in Model
-- "b": Another Gtk.Tree_Model.Gtk_Tree_Iter in Model
-- "user_data": Data passed when the compare func is assigned e.g. by
-- Gtk.Tree_Sortable.Set_Sort_Func
-----------------
-- Internal_Cb --
-----------------
function Internal_Cb
(Model : Gtk.Tree_Model.Gtk_Tree_Model;
A : access Gtk.Tree_Model.Gtk_Tree_Iter;
B : access Gtk.Tree_Model.Gtk_Tree_Iter;
User_Data : System.Address) return Glib.Gint
is
D : constant Users.Internal_Data_Access := Users.Convert (User_Data);
begin
return To_Gtk_Tree_Iter_Compare_Func (D.Func) (Model, A.all, B.all, D.Data.all);
end Internal_Cb;
---------------------------
-- Set_Default_Sort_Func --
---------------------------
procedure Set_Default_Sort_Func
(Sortable : Gtk.Tree_Sortable.Gtk_Tree_Sortable;
Sort_Func : Gtk_Tree_Iter_Compare_Func;
User_Data : User_Data_Type)
is
D : System.Address;
begin
if Sort_Func = null then
C_Gtk_Tree_Sortable_Set_Default_Sort_Func (Sortable, System.Null_Address, System.Null_Address, Users.Free_Data'Address);
else
D := Users.Build (To_Address (Sort_Func), User_Data);
C_Gtk_Tree_Sortable_Set_Default_Sort_Func (Sortable, Internal_Cb'Address, D, Users.Free_Data'Address);
end if;
end Set_Default_Sort_Func;
end Set_Default_Sort_Func_User_Data;
-------------------
-- Set_Sort_Func --
-------------------
procedure Set_Sort_Func
(Sortable : Gtk_Tree_Sortable;
Sort_Column_Id : Glib.Gint;
Sort_Func : Gtk_Tree_Iter_Compare_Func)
is
begin
if Sort_Func = null then
C_Gtk_Tree_Sortable_Set_Sort_Func (Sortable, Sort_Column_Id, System.Null_Address, System.Null_Address, System.Null_Address);
else
C_Gtk_Tree_Sortable_Set_Sort_Func (Sortable, Sort_Column_Id, Internal_Gtk_Tree_Iter_Compare_Func'Address, To_Address (Sort_Func), System.Null_Address);
end if;
end Set_Sort_Func;
package body Set_Sort_Func_User_Data is
package Users is new Glib.Object.User_Data_Closure
(User_Data_Type, Destroy);
function To_Gtk_Tree_Iter_Compare_Func is new Ada.Unchecked_Conversion
(System.Address, Gtk_Tree_Iter_Compare_Func);
function To_Address is new Ada.Unchecked_Conversion
(Gtk_Tree_Iter_Compare_Func, System.Address);
function Internal_Cb
(Model : Gtk.Tree_Model.Gtk_Tree_Model;
A : access Gtk.Tree_Model.Gtk_Tree_Iter;
B : access Gtk.Tree_Model.Gtk_Tree_Iter;
User_Data : System.Address) return Glib.Gint;
pragma Convention (C, Internal_Cb);
-- A GtkTreeIterCompareFunc should return a negative integer, zero, or
-- a positive integer if A sorts before B, A sorts with B, or A sorts
-- after B respectively. If two iters compare as equal, their order in
-- the sorted model is undefined. In order to ensure that the
-- Gtk.Tree_Sortable.Gtk_Tree_Sortable behaves as expected, the
-- GtkTreeIterCompareFunc must define a partial order on the model, i.e.
-- it must be reflexive, antisymmetric and transitive.
-- For example, if Model is a product catalogue, then a compare
-- function for the "price" column could be one which returns
-- `price_of(A) - price_of(B)`.
-- "model": The Gtk.Tree_Model.Gtk_Tree_Model the comparison is within
-- "a": A Gtk.Tree_Model.Gtk_Tree_Iter in Model
-- "b": Another Gtk.Tree_Model.Gtk_Tree_Iter in Model
-- "user_data": Data passed when the compare func is assigned e.g. by
-- Gtk.Tree_Sortable.Set_Sort_Func
-----------------
-- Internal_Cb --
-----------------
function Internal_Cb
(Model : Gtk.Tree_Model.Gtk_Tree_Model;
A : access Gtk.Tree_Model.Gtk_Tree_Iter;
B : access Gtk.Tree_Model.Gtk_Tree_Iter;
User_Data : System.Address) return Glib.Gint
is
D : constant Users.Internal_Data_Access := Users.Convert (User_Data);
begin
return To_Gtk_Tree_Iter_Compare_Func (D.Func) (Model, A.all, B.all, D.Data.all);
end Internal_Cb;
-------------------
-- Set_Sort_Func --
-------------------
procedure Set_Sort_Func
(Sortable : Gtk.Tree_Sortable.Gtk_Tree_Sortable;
Sort_Column_Id : Glib.Gint;
Sort_Func : Gtk_Tree_Iter_Compare_Func;
User_Data : User_Data_Type)
is
D : System.Address;
begin
if Sort_Func = null then
C_Gtk_Tree_Sortable_Set_Sort_Func (Sortable, Sort_Column_Id, System.Null_Address, System.Null_Address, Users.Free_Data'Address);
else
D := Users.Build (To_Address (Sort_Func), User_Data);
C_Gtk_Tree_Sortable_Set_Sort_Func (Sortable, Sort_Column_Id, Internal_Cb'Address, D, Users.Free_Data'Address);
end if;
end Set_Sort_Func;
end Set_Sort_Func_User_Data;
use type System.Address;
function Cb_To_Address is new Ada.Unchecked_Conversion
(Cb_Gtk_Tree_Sortable_Void, System.Address);
function Address_To_Cb is new Ada.Unchecked_Conversion
(System.Address, Cb_Gtk_Tree_Sortable_Void);
function Cb_To_Address is new Ada.Unchecked_Conversion
(Cb_GObject_Void, System.Address);
function Address_To_Cb is new Ada.Unchecked_Conversion
(System.Address, Cb_GObject_Void);
procedure Connect
(Object : Gtk_Tree_Sortable;
C_Name : Glib.Signal_Name;
Handler : Cb_Gtk_Tree_Sortable_Void;
After : Boolean);
procedure Connect_Slot
(Object : Gtk_Tree_Sortable;
C_Name : Glib.Signal_Name;
Handler : Cb_GObject_Void;
After : Boolean;
Slot : access Glib.Object.GObject_Record'Class := null);
procedure Marsh_GObject_Void
(Closure : GClosure;
Return_Value : Glib.Values.GValue;
N_Params : Glib.Guint;
Params : Glib.Values.C_GValues;
Invocation_Hint : System.Address;
User_Data : System.Address);
pragma Convention (C, Marsh_GObject_Void);
procedure Marsh_Gtk_Tree_Sortable_Void
(Closure : GClosure;
Return_Value : Glib.Values.GValue;
N_Params : Glib.Guint;
Params : Glib.Values.C_GValues;
Invocation_Hint : System.Address;
User_Data : System.Address);
pragma Convention (C, Marsh_Gtk_Tree_Sortable_Void);
-------------
-- Connect --
-------------
procedure Connect
(Object : Gtk_Tree_Sortable;
C_Name : Glib.Signal_Name;
Handler : Cb_Gtk_Tree_Sortable_Void;
After : Boolean)
is
begin
Unchecked_Do_Signal_Connect
(Object => Glib.Types.GType_Interface (Object),
C_Name => C_Name,
Marshaller => Marsh_Gtk_Tree_Sortable_Void'Access,
Handler => Cb_To_Address (Handler),-- Set in the closure
After => After);
end Connect;
------------------
-- Connect_Slot --
------------------
procedure Connect_Slot
(Object : Gtk_Tree_Sortable;
C_Name : Glib.Signal_Name;
Handler : Cb_GObject_Void;
After : Boolean;
Slot : access Glib.Object.GObject_Record'Class := null)
is
begin
Unchecked_Do_Signal_Connect
(Object => Glib.Types.GType_Interface (Object),
C_Name => C_Name,
Marshaller => Marsh_GObject_Void'Access,
Handler => Cb_To_Address (Handler),-- Set in the closure
Slot_Object => Slot,
After => After);
end Connect_Slot;
------------------------
-- Marsh_GObject_Void --
------------------------
procedure Marsh_GObject_Void
(Closure : GClosure;
Return_Value : Glib.Values.GValue;
N_Params : Glib.Guint;
Params : Glib.Values.C_GValues;
Invocation_Hint : System.Address;
User_Data : System.Address)
is
pragma Unreferenced (Return_Value, N_Params, Params, Invocation_Hint, User_Data);
H : constant Cb_GObject_Void := Address_To_Cb (Get_Callback (Closure));
Obj : constant Glib.Object.GObject := Glib.Object.Convert (Get_Data (Closure));
begin
H (Obj);
exception when E : others => Process_Exception (E);
end Marsh_GObject_Void;
----------------------------------
-- Marsh_Gtk_Tree_Sortable_Void --
----------------------------------
procedure Marsh_Gtk_Tree_Sortable_Void
(Closure : GClosure;
Return_Value : Glib.Values.GValue;
N_Params : Glib.Guint;
Params : Glib.Values.C_GValues;
Invocation_Hint : System.Address;
User_Data : System.Address)
is
pragma Unreferenced (Return_Value, N_Params, Invocation_Hint, User_Data);
H : constant Cb_Gtk_Tree_Sortable_Void := Address_To_Cb (Get_Callback (Closure));
Obj : constant Gtk_Tree_Sortable := Gtk_Tree_Sortable (Unchecked_To_Interface (Params, 0));
begin
H (Obj);
exception when E : others => Process_Exception (E);
end Marsh_Gtk_Tree_Sortable_Void;
----------------------------
-- On_Sort_Column_Changed --
----------------------------
procedure On_Sort_Column_Changed
(Self : Gtk_Tree_Sortable;
Call : Cb_Gtk_Tree_Sortable_Void;
After : Boolean := False)
is
begin
Connect (Self, "sort-column-changed" & ASCII.NUL, Call, After);
end On_Sort_Column_Changed;
----------------------------
-- On_Sort_Column_Changed --
----------------------------
procedure On_Sort_Column_Changed
(Self : Gtk_Tree_Sortable;
Call : Cb_GObject_Void;
Slot : not null access Glib.Object.GObject_Record'Class;
After : Boolean := False)
is
begin
Connect_Slot (Self, "sort-column-changed" & ASCII.NUL, Call, After, Slot);
end On_Sort_Column_Changed;
function "+" (W : Gtk_Tree_Sortable) return Gtk_Tree_Sortable is
begin
return W;
end "+";
end Gtk.Tree_Sortable;
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