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private with
Ada.Containers.Vectors,
System.Address_To_Access_Conversions,
Interfaces.C.Strings;
package FLTK.Text_Buffers is
type Text_Buffer is new Wrapper with private;
type Text_Buffer_Cursor (Data : access Text_Buffer'Class) is limited null record
with Implicit_Dereference => Data;
type Position is new Natural;
type Modification is (Insert, Restyle, Delete, None);
type Modify_Callback is access procedure
(Action : in Modification;
Place : in Position;
Length : in Natural;
Deleted_Text : in String);
type Predelete_Callback is access procedure
(Place : in Position;
Length : in Natural);
package Forge is
function Create
(Requested_Size : in Natural := 0;
Preferred_Gap_Size : in Natural := 1024)
return Text_Buffer;
end Forge;
procedure Add_Modify_Callback
(This : in out Text_Buffer;
Func : in Modify_Callback);
procedure Add_Predelete_Callback
(This : in out Text_Buffer;
Func : in Predelete_Callback);
procedure Call_Modify_Callbacks
(This : in out Text_Buffer);
procedure Call_Predelete_Callbacks
(This : in out Text_Buffer);
procedure Enable_Callbacks
(This : in out Text_Buffer);
procedure Disable_Callbacks
(This : in out Text_Buffer);
procedure Load_File
(This : in Text_Buffer;
Name : in String);
procedure Save_File
(This : in Text_Buffer;
Name : in String);
procedure Insert_Text
(This : in out Text_Buffer;
Pos : in Natural;
Item : in String);
procedure Remove_Text
(This : in out Text_Buffer;
Start, Finish : in Natural);
function Character_At
(This : in Text_Buffer;
Pos : in Natural)
return Character;
function Text_At
(This : in Text_Buffer;
Start, Finish : in Natural)
return String;
function Length
(This : in Text_Buffer)
return Natural;
function Get_Selection
(This : in Text_Buffer;
Start, Finish : out Natural)
return Boolean;
procedure Set_Selection
(This : in out Text_Buffer;
Start, Finish : in Natural);
function Has_Selection
(This : in Text_Buffer)
return Boolean;
procedure Remove_Selected_Text
(This : in out Text_Buffer);
function Search_Forward
(This : in Text_Buffer;
Start_At : in Natural;
Item : in String;
Found_At : out Natural;
Match_Case : in Boolean)
return Boolean;
function Search_Backward
(This : in Text_Buffer;
Start_At : in Natural;
Item : in String;
Found_At : out Natural;
Match_Case : in Boolean)
return Boolean;
-- only takes into account newline characters, not word wrap
function Skip_Lines
(This : in out Text_Buffer;
Start, Lines : in Natural)
return Natural;
-- only takes into account newline characters, not word wrap
function Rewind_Lines
(This : in out Text_Buffer;
Start, Lines : in Natural)
return Natural;
private
package Modify_Vectors is new Ada.Containers.Vectors
(Index_Type => Positive,
Element_Type => Modify_Callback);
package Predelete_Vectors is new Ada.Containers.Vectors
(Index_Type => Positive,
Element_Type => Predelete_Callback);
type Text_Buffer is new Wrapper with
record
CB_Active : Boolean;
Modify_CBs : Modify_Vectors.Vector;
Predelete_CBs : Predelete_Vectors.Vector;
end record;
overriding procedure Finalize
(This : in out Text_Buffer);
procedure Modify_Callback_Hook
(Pos, Inserted, Deleted, Restyled : in Interfaces.C.int;
Text : in Interfaces.C.Strings.chars_ptr;
UD : in System.Address);
pragma Convention (C, Modify_Callback_Hook);
procedure Predelete_Callback_Hook
(Pos, Deleted : in Interfaces.C.int;
UD : in System.Address);
pragma Convention (C, Predelete_Callback_Hook);
package Text_Buffer_Convert is new System.Address_To_Access_Conversions (Text_Buffer);
end FLTK.Text_Buffers;
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