cxgridheaderpopupmenuitems.pas

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{********************************************************************}
{                                                                    }
{       Developer Express Visual Component Library                   }
{       ExpressQuantumGrid Utils                                     }
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unit cxGridHeaderPopupMenuItems;

{$I cxVer.inc}

interface

uses
  Classes, cxGridMenuOperations;

type
  TcxGridHeaderPopupMenuOperation = class(TcxGridTableColumnMenuOperation);

  TcxGridSortingMenuOperation = class(TcxGridHeaderPopupMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetVisible: Boolean; override;
    function IsSorted: Boolean;
  end;

  TcxGridSortColumn = class(TcxGridSortingMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetDown: Boolean; override;
    function GetEnabled: Boolean; override;
  end;

  TcxGridSortColumnAsc = class(TcxGridSortColumn)
  protected
    function GetImageResourceName: string; override;
  public
    constructor Create; override;
  end;

  TcxGridSortColumnDesc = class(TcxGridSortColumn)
  protected
    function GetImageResourceName: string; override;
  public
    constructor Create; override;
  end;

  TcxGridClearSorting = class(TcxGridSortingMenuOperation)
  protected
    function GetEnabled: Boolean; override;
  public
    constructor Create; override;
  end;

  TcxGridGroupByThisField = class(TcxGridHeaderPopupMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetCaption: string; override;
    function GetEnabled: Boolean; override;
    function GetImageResourceName: string; override;
    function GetVisible: Boolean; override;
  public
    constructor Create; override;
  end;

  TcxGridGroupByBox = class(TcxGridHeaderPopupMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetDown: Boolean; override;
    function GetImageResourceName: string; override;
    function GetVisible: Boolean; override;
  public
    constructor Create; override;
  end;

  TcxGridAlignmentSubMenu = class(TcxGridHeaderPopupMenuOperation)
  protected
    function GetVisible: Boolean; override;
  public
    constructor Create; override;
  end;

  TcxGridAlign = class(TcxGridHeaderPopupMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetDown: Boolean; Override;
    function GetEnabled: Boolean; override;
  public
    class function GetParentOperationClass: TcxGridPopupMenuOperationClass; override;
  end;

  TcxGridAlignLeft = class(TcxGridAlign)
  protected
    function GetImageResourceName: string; override;
  public
    constructor Create; override;
  end;

  TcxGridAlignRight = class(TcxGridAlign)
  protected
    function GetImageResourceName: string; override;
  public
    constructor Create; override;
  end;

  TcxGridAlignCenter = class(TcxGridAlign)
  protected
    function GetImageResourceName: string; override;
  public
    constructor Create; override;
  end;

  TcxGridBestFit = class(TcxGridHeaderPopupMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetEnabled: Boolean; override;
    function GetImageResourceName: string; override;
    function GetVisible: Boolean; override;
  public
    constructor Create; override;
  end;

  TcxGridBestFitAllColumns = class(TcxGridHeaderPopupMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetVisible: Boolean; override;
  public
    constructor Create; override;
  end;

  TcxGridRemoveColumn = class(TcxGridHeaderPopupMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetVisible: Boolean; override;
  public
    constructor Create; override;
  end;

  TcxGridFieldChooser = class(TcxGridHeaderPopupMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetDown: Boolean; override;
    function GetImageResourceName: string; override;
  public
    constructor Create; override;
  end;

  TcxGridShowFooter = class(TcxGridHeaderPopupMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetDown: Boolean; Override;
    function GetImageResourceName: string; override;
  public
    constructor Create; override;
  end;

  TcxGridShowGroupFooter = class(TcxGridHeaderPopupMenuOperation)
  protected
    procedure Execute(Sender: TObject); override;
    function GetDown: Boolean; override;
    function GetEnabled: Boolean; override;
    function GetImageResourceName: string; override;
    function GetVisible: Boolean; override;
  public
    constructor Create; override;
  end;

  TcxGridHeaderPopupMenuOperations = class(TcxGridPopupMenuOperations)
  protected
    procedure AddItems; override;
  end;

implementation

uses
  cxCustomData, cxEdit, cxGridCustomTableView, cxGridTableView, cxGridPopupMenuConsts;

const
  AImageName = 'HdrImg';

{ TcxGridSortingMenuOperation }

procedure TcxGridSortingMenuOperation.Execute(Sender: TObject);
begin
  if IsSorted then
    HitGridView.DataController.ClearSorting(True);
end;

function TcxGridSortingMenuOperation.GetVisible: Boolean;
begin
  Result := HitGridView.OptionsCustomize.ColumnSorting;
end;

function TcxGridSortingMenuOperation.IsSorted: Boolean;
var
  I: Integer;
begin
  Result := False;
  with HitGridView do
    if SortedItemCount > 0 then
      for I := 0 to SortedItemCount - 1 do
        if TcxCustomGridTableItemAccess.GetGroupIndex(SortedItems[I]) = -1 then
        begin
          Result := True;
          Break;
        end;
end;

{ TcxGridSortColumn }

procedure TcxGridSortColumn.Execute(Sender: TObject);
var
  ASortOrder: TcxDataSortOrder;
begin
  HitGridView.BeginUpdate;
  try
    inherited;
    case Tag of
      0: ASortOrder := soAscending;
      1: ASortOrder := soDescending;
    else
      ASortOrder := soNone;
    end;
    HitColumn.SortOrder := ASortOrder;
  finally
    HitGridView.EndUpdate;
  end;
end;

function TcxGridSortColumn.GetDown: Boolean;
begin
  if Tag = 0 then
    Result := HitColumn.SortOrder = soAscending
  else
    Result := HitColumn.SortOrder = soDescending;
end;

function TcxGridSortColumn.GetEnabled: Boolean;
begin
  Result := TcxCustomGridTableItemAccess.CanSort(HitColumn);
end;

{ TcxGridSortColumnAsc }

constructor TcxGridSortColumnAsc.Create;
begin
  inherited;
  ResCaption := @cxSGridSortColumnAsc;
  Tag := 0;
end;

function TcxGridSortColumnAsc.GetImageResourceName: string;
begin
  Result := AImageName + '1';
end;

{ TcxGridSortColumnDesc }

constructor TcxGridSortColumnDesc.Create;
begin
  inherited;
  ResCaption := @cxSGridSortColumnDesc;
  Tag := 1;
end;

function TcxGridSortColumnDesc.GetImageResourceName: string;
begin
  Result := AImageName + '2';
end;

{ TcxGridClearSorting }

constructor TcxGridClearSorting.Create;
begin
  inherited;
  ResCaption := @cxSGridClearSorting;
end;

function TcxGridClearSorting.GetEnabled: Boolean;
begin
  Result := IsSorted;
end;

{ TcxGridGroupBy }

constructor TcxGridGroupByThisField.Create;
begin
  inherited;
  ResCaption := @cxSGridGroupByThisField;
end;

procedure TcxGridGroupByThisField.Execute(Sender: TObject);
var
  AGroupIndex: Integer;
begin
  HitGridView.BeginUpdate;
  try
    HitGridView.OptionsView.GroupByBox := True;
    if HitColumn.GroupIndex <> -1 then