cxinplacecontainer.pas

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{********************************************************************}
{                                                                    }
{           Developer Express Visual Component Library               }
{           Express Cross Platform Common Editing Library            }
{                                                                    }
{           Copyright (c) 2000-2008 Developer Express Inc.           }
{           ALL RIGHTS RESERVED                                      }
{                                                                    }
{   The entire contents of this file is protected by U.S. and        }
{   International Copyright Laws. Unauthorized reproduction,         }
{   reverse-engineering, and distribution of all or any portion of   }
{   the code contained in this file is strictly prohibited and may   }
{   result in severe civil and criminal penalties and will be        }
{   prosecuted to the maximum extent possible under the law.         }
{                                                                    }
{   RESTRICTIONS                                                     }
{                                                                    }
{   THIS SOURCE CODE AND ALL RESULTING INTERMEDIATE FILES            }
{   (DCU, OBJ, DLL, ETC.) ARE CONFIDENTIAL AND PROPRIETARY TRADE     }
{   SECRETS OF DEVELOPER EXPRESS INC. THE REGISTERED DEVELOPER IS    }
{   LICENSED TO DISTRIBUTE THE COMMONEDITINGLIBRARY AND ALL          }
{   ACCOMPANYING VCL CONTROLS AS PART OF AN EXECUTABLE PROGRAM       }
{   ONLY.                                                            }
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{   THE SOURCE CODE CONTAINED WITHIN THIS FILE AND ALL RELATED       }
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{   CONSULT THE END USER LICENSE AGREEMENT FOR INFORMATION ON        }
{   ADDITIONAL RESTRICTIONS.                                         }
{                                                                    }
{********************************************************************}

unit cxInplaceContainer;

{$I cxVer.inc}

interface    

uses
  Classes, SysUtils,
  Windows, Messages,
{$IFDEF DELPHI6}
  Variants, Types,
{$ENDIF}
  Forms, Controls, StdCtrls, Graphics, cxVariants, cxClasses,
  cxControls, cxGraphics, cxStyles, cxContainer, cxEdit, cxTextEdit, cxData,
  cxCustomData, cxDataUtils, cxDataStorage, cxLookAndFeels, cxLookAndFeelPainters,
  cxEditDataRegisteredRepositoryItems, cxGeometry, cxLibraryConsts;

const
   ecs_Content    = 0;
   ecs_Background = 1;
   ecs_Inactive   = 2;
   ecs_Selection  = 3;

   ecs_EditContainerStylesMaxIndex = ecs_Content;
   ecs_EditingStylesMaxIndex = ecs_Selection;

// predefined hit codes
   echc_Empty        = 0;
   echc_IsMouseEvent = 1;

// viewinfo states
   cvis_IsDirty      = 1;
   cvis_StyleInvalid = 2;

   cxSizingMarkWidth = 1;
   cxScrollWidthDragInterval = 50;

type
  TcxDragSizingDirection = (dsdHorz, dsdVert);

  TcxGetEditPropertiesEvent = procedure(Sender: TObject; AData: Pointer;
    var AEditProperties: TcxCustomEditProperties) of object;
  TcxOnGetContentStyleEvent = procedure(Sender: TObject; AData: Pointer;
    out AStyle: TcxStyle) of object;

  TcxInplaceEditContainerClass = class of TcxCustomInplaceEditContainer;
  TcxCustomInplaceEditContainer = class;
  TcxItemDataBindingClass = class of TcxCustomItemDataBinding;

  TcxCustomControlDragAndDropObjectClass = class of TcxCustomControlDragAndDropObject;

  TcxEditingController = class;
  TcxEditingControllerClass = class of TcxEditingController;

  TcxCustomEditStyleClass = class of TcxCustomEditStyle;

  TcxCustomControlControllerClass = class of TcxCustomControlController;
  TcxCustomControlController = class;
  TcxControlDataController = class;
  TcxCustomControlPainter = class;
  TcxEditingControl = class;

  TcxHotTrackControllerClass = class of TcxHotTrackController;
  TcxCustomHitTestController = class;

  TcxEditItemShowEditButtons = (eisbDefault, eisbNever, eisbAlways);
  TcxEditingControlEditShowButtons = (ecsbAlways, ecsbFocused, ecsbNever);

  TcxCustomControlViewInfo = class;

  TcxCustomControlStyles = class;

  TcxEditCellViewInfo = class;
  TcxEditCellViewInfoClass = class of TcxEditCellViewInfo;

  TcxHitCode = type Int64;

  { TcxInterfacedCollectionItem }

  TcxInterfacedCollectionItem = class(TCollectionItem, IUnknown)
  private
    FOwnerInterface: IUnknown;
  protected
    // IUnknown
    function _AddRef: Integer; stdcall;
    function _Release: Integer; stdcall;
    function QueryInterface(const IID: TGUID; out Obj): HResult; virtual; stdcall;
  public
    procedure AfterConstruction; override;
  end;

  { TcxContainerItemDefaultValuesProvider }

  TcxContainerItemDefaultValuesProvider = class(TcxCustomEditDefaultValuesProvider)
    function IsDisplayFormatDefined(AIsCurrencyValueAccepted: Boolean): Boolean; override;
  end;

  { TcxCustomItemDataBinding }

  TcxCustomItemDataBinding = class(TcxOwnedPersistent)
  private
    FDefaultValuesProvider: TcxCustomEditDefaultValuesProvider;
    FData: Pointer;
    function GetDataController: TcxCustomDataController;
    function GetEditContainer: TcxCustomInplaceEditContainer;
  protected
    function DefaultRepositoryItem: TcxEditRepositoryItem; virtual;
    function GetDefaultCaption: string; virtual;
    function GetDefaultValuesProvider(AProperties: TcxCustomEditProperties): IcxEditDefaultValuesProvider; virtual;
    function GetDefaultValuesProviderClass: TcxCustomEditDefaultValuesProviderClass; virtual;
    function GetValueTypeClass: TcxValueTypeClass; virtual;
    procedure Init; virtual;
    function IsDisplayFormatDefined(AIsCurrencyValueAccepted: Boolean): Boolean;
    procedure ValueTypeClassChanged; virtual;
    property DataController: TcxCustomDataController read GetDataController;
    property DefaultValuesProvider: TcxCustomEditDefaultValuesProvider read FDefaultValuesProvider;
    property EditContainer: TcxCustomInplaceEditContainer read GetEditContainer;
  public
    constructor Create(AOwner: TPersistent); override;
    destructor Destroy; override;
    property Data: Pointer read FData write FData;
  end;

  { TcxItemDataBinding }

  TcxItemDataBinding = class(TcxCustomItemDataBinding)
  private
    FValueTypeClass: TcxValueTypeClass;
    function GetValueType: string;
    procedure SetValueType(const Value: string);
    procedure SetValueTypeClass(Value: TcxValueTypeClass);
  protected
    function GetValueTypeClass: TcxValueTypeClass; override;
    function IsValueTypeStored: Boolean; virtual;
  public
    procedure Assign(Source: TPersistent); override;
    property ValueTypeClass: TcxValueTypeClass read GetValueTypeClass write SetValueTypeClass;
  published
    property ValueType: string read GetValueType write SetValueType stored IsValueTypeStored;
  end;

  { TcxControlDataController }

  TcxControlDataController = class(TcxDataController)
  private
    function GetControl: TcxEditingControl;
  protected
    procedure UpdateControl(AInfo: TcxUpdateControlInfo); override;
  public
    function GetItem(Index: Integer): TObject; override;
    function GetItemID(AItem: TObject): Integer; override;
    function GetItemValueSource(AItemIndex: Integer): TcxDataEditValueSource; override;
    procedure UpdateData; override;
    procedure UpdateItemIndexes; override;
  end;

  { TcxCustomEditContainerItemOptions }

  TcxCustomEditContainerItemOptionsClass = class of TcxCustomEditContainerItemOptions;

  TcxCustomEditContainerItemOptions = class(TcxOwnedPersistent)
  private
    FCustomizing: Boolean;
    FEditing: Boolean;
    FFiltering: Boolean;
    FFocusing: Boolean;
    FIncSearch: Boolean;
    FMoving: Boolean;
    FShowEditButtons: TcxEditItemShowEditButtons;
    FSorting: Boolean;
    FTabStop: Boolean; 
    function GetEditContainer: TcxCustomInplaceEditContainer;
    procedure SetEditing(Value: Boolean);
    procedure SetFiltering(Value: Boolean);
    procedure SetFocusing(Value: Boolean);
    procedure SetIncSearch(Value: Boolean);
    procedure SetShowEditButtons(Value: TcxEditItemShowEditButtons);
  protected
    procedure Changed; virtual;
    property EditContainer: TcxCustomInplaceEditContainer read GetEditContainer;
    property Moving: Boolean read FMoving write FMoving default True;
    property Customizing: Boolean read FCustomizing write FCustomizing default True;
    property Sorting: Boolean read FSorting write FSorting default True;
    property Editing: Boolean read FEditing write SetEditing default True;
    property Filtering: Boolean read FFiltering write SetFiltering default True;
    property Focusing: Boolean read FFocusing write SetFocusing default True;
    property IncSearch: Boolean read FIncSearch write SetIncSearch default True;
    property ShowEditButtons: TcxEditItemShowEditButtons read FShowEditButtons
      write SetShowEditButtons default eisbDefault;
    property TabStop: Boolean read FTabStop write FTabStop default True;
  public
    constructor Create(AOwner: TPersistent); override;
    procedure Assign(AOwner: TPersistent); override;
  end;

  { TcxControlOptionsView }

  TcxControlOptionsViewClass = class of TcxControlOptionsView;

  TcxControlOptionsView = class(TcxOwnedPersistent)
  private
    FCellAutoHeight: Boolean;
    FCellEndEllipsis: Boolean;
    FCellTextMaxLineCount: Integer;
    FShowEditButtons: TcxEditingControlEditShowButtons;
    function GetEditingControl: TcxEditingControl;
    function GetScrollBars: TScrollStyle;
    procedure SetCellAutoHeight(const Value: Boolean);
    procedure SetCellEndEllipsis(const Value: Boolean);
    procedure SetCellTextMaxLineCount(const Value: Integer);
    procedure SetScrollBars(const Value: TScrollStyle);
    procedure SetShowEditButtons(const Value: TcxEditingControlEditShowButtons);
  protected
    procedure Changed; virtual;
    property EditingControl: TcxEditingControl read GetEditingControl;
  public
    constructor Create(AOwner: TPersistent); override;
    procedure Assign(Source: TPersistent); override;
  published
    property CellAutoHeight: Boolean read FCellAutoHeight write SetCellAutoHeight default False;
    property CellEndEllipsis: Boolean read FCellEndEllipsis write SetCellEndEllipsis default False;
    property CellTextMaxLineCount: Integer read FCellTextMaxLineCount write SetCellTextMaxLineCount default 0;
    property ScrollBars: TScrollStyle read GetScrollBars write SetScrollBars default ssBoth;
    property ShowEditButtons: TcxEditingControlEditShowButtons read FShowEditButtons write SetShowEditButtons default ecsbNever;
  end;

  { TcxControlOptionsData }

  TcxControlOptionsDataClass = class of TcxControlOptionsData;

  TcxControlOptionsData = class(TcxOwnedPersistent)
  private
    FCancelOnExit: Boolean;
    FEditing: Boolean;
    function GetEditingControl: TcxEditingControl;
    procedure SetEditing(Value: Boolean);
  protected
    procedure Changed; virtual;
  public
    constructor Create(AOwner: TPersistent); override;
    procedure Assign(Source: TPersistent); override;
    property EditingControl: TcxEditingControl read GetEditingControl;
  published
    property CancelOnExit: Boolean read FCancelOnExit write FCancelOnExit default True;
    property Editing: Boolean read FEditing write SetEditing default True;
  end;

  { TcxControlOptionsBehavior }