david
78ab77cd4c
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.jvcl@19 7f62d464-2af8-f54e-996c-e91b33f51cbe
148 lines
4.5 KiB
ObjectPascal
148 lines
4.5 KiB
ObjectPascal
{-----------------------------------------------------------------------------
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The contents of this file are subject to the Mozilla Public License
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Version 1.1 (the "License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http:{www.mozilla.org/MPL/MPL-1.1.html
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
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the specific language governing rights and limitations under the License.
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The Original Code is: JvControlComponent.pas, released on 2004-09-21
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The Initial Developer of the Original Code is André Snepvangers [ASnepvangers att users.sourceforge.net]
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Portions created by André Snepvangers are Copyright (C) 2004 André Snepvangers.
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All Rights Reserved.
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Contributor(s):
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You may retrieve the latest version of this file at the Project JEDI's JVCL home page,
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located at http:{jvcl.sourceforge.net
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Known Issues:
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It is still possible to move the component in IDE outside the parent.
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It could also be called as a feature. Object Treeview shows the
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correct parent.
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-----------------------------------------------------------------------------}
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// $Id: JvControlComponent.pas 12337 2009-06-11 10:42:10Z ahuser $
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unit JvControlComponent;
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{$I jvcl.inc}
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interface
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uses
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{$IFDEF UNITVERSIONING}
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JclUnitVersioning,
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{$ENDIF UNITVERSIONING}
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SysUtils, Classes, Windows, Messages, Controls, Forms,
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JvComponentBase;
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type
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TJvCustomControlComponent = class(TJvComponent)
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private
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FActive: Boolean;
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FParent: TWinControl;
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function GetDesignInfo: Longint;
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procedure SetDesignInfo(Value: Longint);
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protected
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procedure SetParent(const Value: TWinControl); virtual;
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function GetParent: TWinControl; virtual;
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procedure Loaded; override;
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procedure SetParentComponent(Value: TComponent); override;
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property Active: Boolean read FActive write FActive;
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public
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function GetParentComponent: TComponent; override;
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property DesignInfo: Longint read GetDesignInfo write SetDesignInfo;
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property Parent: TWinControl read GetParent write SetParent;
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end;
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{$IFDEF UNITVERSIONING}
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const
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UnitVersioning: TUnitVersionInfo = (
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RCSfile: '$URL: https://jvcl.svn.sourceforge.net/svnroot/jvcl/tags/JVCL3_39/run/JvControlComponent.pas $';
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Revision: '$Revision: 12337 $';
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Date: '$Date: 2009-06-11 12:42:10 +0200 (jeu., 11 juin 2009) $';
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LogPath: 'JVCL\run'
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);
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{$ENDIF UNITVERSIONING}
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implementation
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procedure TJvCustomControlComponent.SetParentComponent(Value: TComponent);
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begin
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SetParent(TWinControl(Value));
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end;
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procedure TJvCustomControlComponent.SetParent(const Value: TWinControl);
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begin
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if Value <> Parent then
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FParent := Value;
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end;
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function TJvCustomControlComponent.GetParentComponent: TComponent;
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begin
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Result := GetParent;
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end;
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function TJvCustomControlComponent.GetParent: TWinControl;
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begin
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Result := FParent;
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end;
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procedure TJvCustomControlComponent.Loaded;
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begin
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inherited Loaded;
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if not (csDesigning in ComponentState) and Assigned(Parent) and (Parent <> Owner) then
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begin
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{ Changing the owner to the parent, has the advantage that
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it gets destroyed by the Parent. At the right time thus.
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To access a component with the Object Inspector
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Owner property should remain unchanged.
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}
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if Assigned(Owner) then
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Owner.RemoveComponent(Self);
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Parent.InsertComponent(Self); { owner := parent }
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end;
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end;
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function TJvCustomControlComponent.GetDesignInfo: Longint;
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begin
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Result := inherited DesignInfo;
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end;
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procedure TJvCustomControlComponent.SetDesignInfo(Value: Longint);
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var
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Pos: TPoint;
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FControl: TControl;
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begin
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if (csDesigning in ComponentState) and (Owner is TWinControl) then
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begin
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Pos.X := TSmallPoint(Value).X; { left }
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Pos.Y := TSmallPoint(Value).Y; { top }
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if not Assigned(Parent) or (Parent = Owner) then { find the TWinControl where it is dropped }
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begin
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FControl := TWinControl(Owner).ControlAtPos(Pos, True, True);
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if not Assigned(FControl) then
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Parent := TWinControl(Owner)
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else
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if FControl is TControl then
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Parent := FControl.Parent
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else
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Parent := TWinControl(Parent);
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end;
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end;
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inherited DesignInfo := Value;
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end;
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{$IFDEF UNITVERSIONING}
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initialization
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RegisterUnitVersion(HInstance, UnitVersioning);
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finalization
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UnregisterUnitVersion(HInstance);
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{$ENDIF UNITVERSIONING}
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end.
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