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|
unit ButtonEditListView;
interface
uses ComCtrls, ExtCtrls, Classes, Controls, Graphics;
type
TLVSelectItemEvent = procedure(Sender: TObject; Item: TListItem;
Selected: Boolean) of object;
TButtonEditListView = class(TButtonedEdit)
private
IconRightButton : TIcon;
fOnListViewSelectItem : TNotifyEvent;
fOnOpenListView : TNotifyEvent;
function fReadColumns : TListColumns;
procedure fWriteColumns(Cols : TListColumns);
function fReadItems : TListItems;
procedure fWriteItems(Items : TListItems);
procedure ShowListView(Owner: TObject);
procedure HideListView(Sender: TObject; Item: TListItem;
Selected: Boolean);
function GetOnOpenListView : TNotifyEvent;
procedure SetOnOpenListView(const Value: TNotifyEvent);
protected
public
ListView : TListView;
fImageList : TImageList;
//property EnableListView
constructor Create(AOwner : TComponent); Override;
destructor Destroy; override;
published
// Property Columns : TlistColumns read fReadColumns write fWriteColumns;
// Property Items : TListItems read fReadItems write fWriteItems;
Property OnListViewSelectItem : TNotifyEvent read fOnListViewSelectItem write fOnListViewSelectItem;
property OnOpenListView : TNotifyEvent read fOnOpenListView write fOnOpenListView;
end;
procedure Register;
implementation
//{$R *.res}
procedure Register;
begin
RegisterComponents('GDB Caché', [TButtonEditListView]);
end;
constructor TButtonEditListView.Create(AOwner : TComponent);
begin
Inherited;
ListView := TListView.Create(Self);
ListView.Parent := Self.Parent;
ListView.Top := 2;
ListView.Left := 2;
ListView.Width := 100;
ListView.Height := 100;
// Create and give it position
{
ListView.Top := Self.Top + Self.Height;
ListView.Left := Self.Left;
ListView.Width := Self.Width;
ListView.Height := Self.Height;
}
ListView.RowSelect := True;
ListView.ViewStyle := vsReport;
ListView.ShowColumnHeaders := False;
//ListView.BevelOuter := bvnone;
ListView.Enabled := False;
ListView.Visible := False;
ListView.BringToFront;
Invalidate;
ListView.OnSelectItem := HideListView;
Self.OnRightButtonClick := ShowListView;
// Configure the icons in the right button
IconRightButton := TIcon.Create;
IconRightButton.LoadFromResourceName(HInstance,'DOWN2');
fImageList := TImageList.Create(nil);
fImageList.AddIcon(IconRightButton);
Self.Images := fImageList;
Self.RightButton.Enabled := True;
Self.RightButton.Visible := True;
Self.RightButton.DisabledImageIndex := 0;
Self.RightButton.HotImageIndex := 0;
Self.RightButton.ImageIndex := 0;
Self.RightButton.PressedImageIndex := 0;
Self.SetBounds(50,50,100,100);
end;
destructor TButtonEditListView.Destroy;
begin
ListView.Destroy;
IconRightButton.Destroy;
fImageList.Destroy;
Inherited;
end;
//******************************************************************************
function TButtonEditListView.fReadColumns : TListColumns;
begin
//Result := ListView.Columns;
end;
procedure TButtonEditListView.fWriteColumns(Cols : TListColumns);
begin
//ListView.Columns := Cols;
end;
//******************************************************************************
function TButtonEditListView.fReadItems : TListItems;
begin
//Result := ListView.Items;
end;
procedure TButtonEditListView.fWriteItems(Items : TListItems);
begin
//ListView.Items := Items;
end;
//******************************************************************************
procedure TButtonEditListView.ShowListView(Owner: TObject);
begin
if Assigned(OnOpenListView) then OnOpenListView(Self);
ListView.Top := 2;
ListView.Left := 5;
ListView.Width := 500;
ListView.Height := 500;
ListView.Enabled := True;
ListView.Visible := True;
ListView.BringToFront;
Invalidate;
end;
procedure TButtonEditListView.HideListView(Sender: TObject; Item: TListItem;
Selected: Boolean);
begin
if Assigned(OnListViewSelectItem) then OnListViewSelectItem(Self);
ListView.Enabled := False;
ListView.Visible := False;
end;
//******************************************************************************
function TButtonEditListView.GetOnOpenListView : TNotifyEvent;
begin
ShowListView(nil);
end;
//******************************************************************************
procedure TButtonEditListView.SetOnOpenListView(const Value: TNotifyEvent);
begin
inherited;
end;
end. |
