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{-------------------------------------------------------------------------------
The contents of this file are subject to the Mozilla Public License
Version 1.1 (the "License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL/
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
the specific language governing rights and limitations under the License.
The Original Code is: SynEditPythonBehaviour.pas, released 2000-06-23.
The Original Code is based on odPythonBehaviour.pas by Olivier Deckmyn, part
of the mwEdit component suite.
Contributors to the SynEdit and mwEdit projects are listed in the
Contributors.txt file.
Alternatively, the contents of this file may be used under the terms of the
GNU General Public License Version 2 or later (the "GPL"), in which case
the provisions of the GPL are applicable instead of those above.
If you wish to allow use of your version of this file only under the terms
of the GPL and not to allow others to use your version of this file
under the MPL, indicate your decision by deleting the provisions above and
replace them with the notice and other provisions required by the GPL.
If you do not delete the provisions above, a recipient may use your version
of this file under either the MPL or the GPL.
$Id: SynEditPythonBehaviour.pas,v 1.5 2003/04/30 12:59:50 etrusco Exp $
You may retrieve the latest version of this file at the SynEdit home page,
located at http://SynEdit.SourceForge.net
Known Issues:
-------------------------------------------------------------------------------}
{
@abstract(Provides a component which implements editing rules to apply to a Python source file)
@author(Olivier Deckmyn, converted to SynEdit by David Muir <dhm@dmsoftware.co.uk>)
@created(1999-10-17)
@lastmod(May 19, 2000)
The SynEditPythonBehaviour unit provides a simple component implements editing rules to apply
to a python source file. Python has a unusual way to mark blocks (like begin/end in pascal) : it
uses indentation. So the rule is after a ":" and a line break, we have to indent once.
}
{$IFNDEF QSYNEDITPYTHONBEHAVIOUR}
unit SynEditPythonBehaviour;
{$ENDIF}
{$I SynEdit.inc}
interface
uses
{$IFDEF SYN_CLX}
Qt, QGraphics, QControls, QForms, QDialogs,
QSynEdit,
QSynEditKeyCmds,
{$ELSE}
Windows, Messages, Graphics, Controls, Forms, Dialogs,
SynEdit,
SynEditKeyCmds,
{$ENDIF}
SysUtils,
Classes;
type
TSynEditPythonBehaviour = class(TComponent)
private
FEditor: TSynEdit;
fIndent: integer;
protected
procedure SetEditor(Value: TSynEdit); virtual;
procedure doProcessUserCommand(Sender: TObject; AfterProcessing: boolean;
var Handled: boolean; var Command: TSynEditorCommand;
var AChar: Char; Data: Pointer; HandlerData: pointer); virtual;
public
constructor Create(aOwner: TComponent); override;
published
property Editor: TSynEdit read FEditor write SetEditor;
property Indent: integer read fIndent write fIndent default 4;
end;
implementation
uses
{$IFDEF SYN_CLX}
QSynEditStrConst;
{$ELSE}
SynEditStrConst;
{$ENDIF}
procedure TSynEditPythonBehaviour.SetEditor(Value: TSynEdit);
begin
if FEditor <> Value then begin
if (Editor <> nil) and not (csDesigning in ComponentState) then
Editor.UnregisterCommandHandler( doProcessUserCommand );
// Set the new editor
FEditor := Value;
if (Editor <> nil) and not (csDesigning in ComponentState) then
Editor.RegisterCommandHandler( doProcessUserCommand, nil );
end;
end;
procedure TSynEditPythonBehaviour.doProcessUserCommand(Sender: TObject;
AfterProcessing: boolean; var Handled: boolean;
var Command: TSynEditorCommand; var AChar: Char; Data: Pointer;
HandlerData: pointer);
var
iEditor: TCustomSynEdit;
iPrevLine: string;
cSpace: integer;
begin
if (Command = ecLineBreak) and AfterProcessing then
begin
iEditor := Sender as TCustomSynEdit;
{ CaretY should never be lesser than 2 right after ecLineBreak, so there's
no need for a check }
iPrevLine := TrimRight( iEditor.Lines[ iEditor.CaretY -2 ] );
if (iPrevLine <> '') and (iPrevLine[ Length(iPrevLine) ] = ':') then
begin
iEditor.UndoList.BeginBlock;
try
for cSpace := 1 to Indent do
iEditor.ExecuteCommand( ecChar, #32, nil );
finally
iEditor.UndoList.EndBlock;
end;
end;
end;
end;
constructor TSynEditPythonBehaviour.Create(aOwner: TComponent);
begin
inherited Create(AOwner);
fIndent := 4;
end;
end.