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{
*****************************************************************************
* QtWSCheckLst.pp *
* --------------- *
* *
* *
*****************************************************************************
*****************************************************************************
This file is part of the Lazarus Component Library (LCL)
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
}
unit QtWSCheckLst;
{$mode objfpc}{$H+}
interface
{$I qtdefines.inc}
uses
// Bindings
qt5,
qtprivate, qtwidgets,
// LCL
SysUtils, Classes, StdCtrls, Controls, Graphics, CheckLst, LCLType,
// Widgetset
WSCheckLst, WSLCLClasses;
type
{ TQtWSCheckListBox }
{ TQtWSCustomCheckListBox }
TQtWSCustomCheckListBox = class(TWSCustomCheckListBox)
published
class function CreateHandle(const AWinControl: TWinControl;
const AParams: TCreateParams): TLCLHandle; override;
class function GetItemEnabled(const ACheckListBox: TCustomCheckListBox;
const AIndex: integer): Boolean; override;
class function GetState(const ACheckListBox: TCustomCheckListBox;
const AIndex: integer): TCheckBoxState; override;
class procedure SetItemEnabled(const ACheckListBox: TCustomCheckListBox;
const AIndex: integer; const AEnabled: Boolean); override;
class procedure SetState(const ACheckListBox: TCustomCheckListBox;
const AIndex: integer; const AState: TCheckBoxState); override;
end;
implementation
uses WSProc;
const
LCLCheckStateToQtCheckStateMap: array[TCheckBoxState] of QtCheckState =
(
{cbUnchecked} QtUnchecked,
{cbChecked } QtChecked,
{cbGrayed } QtPartiallyChecked
);
QtCheckStateToLCLCheckStateMap: array[QtCheckState] of TCheckBoxState =
(
{QtUnchecked } cbUnchecked,
{QtPartiallyChecked} cbGrayed,
{QtChecked } cbChecked
);
class function TQtWSCustomCheckListBox.CreateHandle(
const AWinControl: TWinControl; const AParams: TCreateParams
): TLCLHandle;
var
QtListWidget: TQtCheckListBox;
SelMode: QAbstractItemViewSelectionMode;
begin
QtListWidget := TQtCheckListBox.Create(AWinControl, AParams);
QtListWidget.Checkable := True;
if TCheckListBox(AWinControl).MultiSelect then
if TCheckListBox(AWinControl).ExtendedSelect then
SelMode := QAbstractItemViewExtendedSelection
else
SelMode := QAbstractItemViewMultiSelection
else
SelMode := QAbstractItemViewSingleSelection;
QtListWidget.setSelectionMode(SelMode);
QtListWidget.AllowGrayed := TCustomCheckListBox(AWinControl).AllowGrayed;
QtListWidget.AttachEvents;
// create our FList helper
QtListWidget.FList := TQtListStrings.Create(AWinControl, QtListWidget);
QtListWidget.OwnerDrawn := TCheckListBox(AWinControl).Style in [lbOwnerDrawFixed, lbOwnerDrawVariable];
Result := TLCLHandle(QtListWidget);
end;
class function TQtWSCustomCheckListBox.GetItemEnabled(
const ACheckListBox: TCustomCheckListBox; const AIndex: integer): Boolean;
var
QtListWidget: TQtCheckListBox;
begin
if not WSCheckHandleAllocated(ACheckListBox, 'GetItemEnabled') then
Exit(False);
QtListWidget := TQtCheckListBox(ACheckListBox.Handle);
Result := QtListWidget.Enabled[AIndex];
end;
class function TQtWSCustomCheckListBox.GetState(
const ACheckListBox: TCustomCheckListBox; const AIndex: integer): TCheckBoxState;
var
QtListWidget: TQtCheckListBox;
begin
if not WSCheckHandleAllocated(ACheckListBox, 'GetState') then
Exit(cbUnchecked);
QtListWidget := TQtCheckListBox(ACheckListBox.Handle);
QtListWidget.AllowGrayed := ACheckListBox.AllowGrayed;
Result := QtCheckStateToLCLCheckStateMap[QtListWidget.ItemCheckState[AIndex]];
end;
class procedure TQtWSCustomCheckListBox.SetItemEnabled(
const ACheckListBox: TCustomCheckListBox; const AIndex: integer;
const AEnabled: Boolean);
var
QtListWidget: TQtCheckListBox;
begin
if not WSCheckHandleAllocated(ACheckListBox, 'SetItemEnabled') then
Exit;
QtListWidget := TQtCheckListBox(ACheckListBox.Handle);
QtListWidget.BeginUpdate;
QtListWidget.Enabled[AIndex] := AEnabled;
QtListWidget.EndUpdate;
end;
class procedure TQtWSCustomCheckListBox.SetState(
const ACheckListBox: TCustomCheckListBox; const AIndex: integer;
const AState: TCheckBoxState);
var
QtListWidget: TQtCheckListBox;
begin
if not WSCheckHandleAllocated(ACheckListBox, 'SetState') then
Exit;
QtListWidget := TQtCheckListBox(ACheckListBox.Handle);
QtListWidget.AllowGrayed := ACheckListBox.AllowGrayed;
QtListWidget.BeginUpdate;
QtListWidget.ItemCheckState[AIndex] := LCLCheckStateToQtCheckStateMap[AState];
QtListWidget.EndUpdate;
end;
end.
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