Simplified text_buffer callbacks

2 files changed, 19 insertions, 29 deletions

diff --git a/fltk-text_buffers.adb b/fltk-text_buffers.adb
index 736e32e..7529c1c 100644
--- a/fltk-text_buffers.adb
+++ b/fltk-text_buffers.adb
@@ -2,7 +2,7 @@
 
 with Interfaces.C;
 with Interfaces.C.Strings;
-with Ada.Strings.Unbounded;
+with Ada.Strings.Unbounded; use Ada.Strings.Unbounded;
 with Ada.Containers;
 with System;
 use type System.Address;
@@ -112,12 +112,10 @@ package body FLTK.Text_Buffers is
             Text                        : in Interfaces.C.Strings.chars_ptr;
             UD                          : in System.Address)
     is
-        package UStr renames Ada.Strings.Unbounded;
-
         Action : Modification;
         Place : Position := Position (Pos);
         Length : Natural;
-        Deleted_Text : UStr.Unbounded_String := UStr.To_Unbounded_String ("");
+        Deleted_Text : Unbounded_String := To_Unbounded_String ("");
 
         Ada_Text_Buffer : access Text_Buffer :=
             Text_Buffer_Convert.To_Pointer (UD);
@@ -129,7 +127,7 @@ package body FLTK.Text_Buffers is
             Length := Natural (Deleted);
             Action := Delete;
             if Text /= Interfaces.C.Strings.Null_Ptr then
-                Deleted_Text := UStr.To_Unbounded_String (Interfaces.C.Strings.Value (Text));
+                Deleted_Text := To_Unbounded_String (Interfaces.C.Strings.Value (Text));
             end if;
         elsif Restyled > 0 then
             Length := Natural (Restyled);
@@ -140,7 +138,7 @@ package body FLTK.Text_Buffers is
         end if;
 
         for CB of Ada_Text_Buffer.Modify_CBs loop
-            CB.Call (Action, Place, Length, UStr.To_String (Deleted_Text));
+            CB.all (Action, Place, Length, To_String (Deleted_Text));
         end loop;
     end Modify_Callback_Hook;
 
@@ -163,7 +161,7 @@ package body FLTK.Text_Buffers is
             Text_Buffer_Convert.To_Pointer (UD);
     begin
         for CB of Ada_Text_Buffer.Predelete_CBs loop
-            CB.Call (Place, Length);
+            CB.all (Place, Length);
         end loop;
     end Predelete_Callback_Hook;
 
@@ -190,7 +188,7 @@ package body FLTK.Text_Buffers is
 
     procedure Add_Modify_Callback
            (This : in out Text_Buffer;
-            Func : not null access Modify_Callback'Class) is
+            Func : in     Modify_Callback) is
     begin
         if This.Modify_CBs.Length = 0 then
             fl_text_buffer_add_modify_callback
@@ -206,7 +204,7 @@ package body FLTK.Text_Buffers is
 
     procedure Add_Predelete_Callback
            (This : in out Text_Buffer;
-            Func : not null access Predelete_Callback'Class) is
+            Func : in     Predelete_Callback) is
     begin
         if This.Predelete_CBs.Length = 0 then
             fl_text_buffer_add_predelete_callback
diff --git a/fltk-text_buffers.ads b/fltk-text_buffers.ads
index a560076..a021dbf 100644
--- a/fltk-text_buffers.ads
+++ b/fltk-text_buffers.ads
@@ -13,23 +13,19 @@ package FLTK.Text_Buffers is
 
 
     type Position is new Natural;
+    type Modification is (Insert, Restyle, Delete, None);
 
 
-    type Modification is (Insert, Restyle, Delete, None);
-    type Modify_Callback is interface;
-    procedure Call
-           (This         : in Modify_Callback;
-            Action       : in Modification;
+    type Modify_Callback is access procedure
+           (Action       : in Modification;
             Place        : in Position;
             Length       : in Natural;
-            Deleted_Text : in String) is abstract;
+            Deleted_Text : in String);
 
 
-    type Predelete_Callback is interface;
-    procedure Call
-           (This   : in Predelete_Callback;
-            Place  : in Position;
-            Length : in Natural) is abstract;
+    type Predelete_Callback is access procedure
+           (Place  : in Position;
+            Length : in Natural);
 
 
     function Create
@@ -40,12 +36,12 @@ package FLTK.Text_Buffers is
 
     procedure Add_Modify_Callback
            (This : in out Text_Buffer;
-            Func : not null access Modify_Callback'Class);
+            Func : in     Modify_Callback);
 
 
     procedure Add_Predelete_Callback
            (This : in out Text_Buffer;
-            Func : not null access Predelete_Callback'Class);
+            Func : in     Predelete_Callback);
 
 
     procedure Call_Modify_Callbacks
@@ -98,21 +94,17 @@ package FLTK.Text_Buffers is
 private
 
 
-    type Modify_Access is access all Modify_Callback'Class;
-    type Predelete_Access is access all Predelete_Callback'Class;
-
-
     package Modify_Vectors is new Ada.Containers.Vectors
            (Index_Type => Positive,
-            Element_Type => Modify_Access);
+            Element_Type => Modify_Callback);
     package Predelete_Vectors is new Ada.Containers.Vectors
            (Index_Type => Positive,
-            Element_Type => Predelete_Access);
+            Element_Type => Predelete_Callback);
 
 
     type Text_Buffer is new Wrapper with
         record
-            Modify_CBs : Modify_Vectors.Vector;
+            Modify_CBs    : Modify_Vectors.Vector;
             Predelete_CBs : Predelete_Vectors.Vector;
         end record;