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{
*****************************************************************************
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
Author: Sven Barth
Abstract:
This unit contains selection editors for various LCL components.
}
unit SelEdits;
{$mode objfpc}{$H+}
interface
uses
// RTL / FCL
SysUtils, TypInfo,
// LCL
Controls, ExtCtrls,
// IdeIntf
PropEdits;
type
{ TFlowPanelControlIndexEditor }
TFlowPanelControlIndexEditor = class(TSelectionEditor)
public
function GetAttributes: TSelectionEditorAttributes; override;
procedure FilterProperties(ASelection: TPersistentSelectionList;
AProperties: TPropertyEditorList); override;
end;
implementation
type
{ TFlowPanelControlIndexProperty }
TFlowPanelControlIndexProperty = class(TPropertyEditor)
private
FPanel: TCustomFlowPanel;
FControl: TControl;
FPropInfo: TPropInfo;
FPropType: PTypeInfo;
public
constructor Create(APanel: TCustomFlowPanel; AControl: TControl; AHook: TPropertyEditorHook); reintroduce;
function GetAttributes: TPropertyAttributes; override;
function GetValue: ansistring; override;
procedure SetValue(const NewValue: ansistring); override;
end;
{ TFlowPanelControlIndexProperty }
constructor TFlowPanelControlIndexProperty.Create(APanel: TCustomFlowPanel;
AControl: TControl; AHook: TPropertyEditorHook);
begin
inherited Create(AHook, 1);
FPanel := APanel;
FControl := AControl;
FPropType := TypeInfo(Integer);
{$if FPC_FULLVERSION<30101}
FPropInfo.PropType := FPropType;
{$else}
FPropInfo.PropTypeRef := @FPropType;
{$endif}
FPropInfo.Name := 'ControlIndex';
SetPropEntry(0, Nil, @FPropInfo);
end;
function TFlowPanelControlIndexProperty.GetAttributes: TPropertyAttributes;
begin
Result := [];
end;
function TFlowPanelControlIndexProperty.GetValue: ansistring;
begin
Result := IntToStr(FPanel.GetControlIndex(FControl));
end;
procedure TFlowPanelControlIndexProperty.SetValue(const NewValue: ansistring);
var
idx: Integer;
begin
if not TryStrToInt(NewValue, idx) then
Exit;
FPanel.SetControlIndex(FControl, idx);
end;
{ TFlowPanelControlIndexEditor }
function TFlowPanelControlIndexEditor.GetAttributes: TSelectionEditorAttributes;
begin
Result := [seaFilterProperties];
end;
procedure TFlowPanelControlIndexEditor.FilterProperties(
ASelection: TPersistentSelectionList; AProperties: TPropertyEditorList);
var
ctrl: TControl;
i: LongInt;
todelete: array[0..1] of LongInt;
propname: ShortString;
begin
if not Assigned(ASelection) or not Assigned(AProperties) then
Exit;
if ASelection.Count <> 1 then
Exit;
todelete[0] := -1;
todelete[1] := -1;
for i := 0 to AProperties.Count - 1 do begin
if AProperties[i] is TFlowPanelControlIndexProperty then
Exit;
propname := AProperties[i].GetName;
if CompareText(propname, 'CONTROLINDEX') = 0 then
Exit
else if CompareText(propname, 'LEFT') = 0 then
todelete[0] := i
else if CompareText(propname, 'TOP') = 0 then
todelete[1] := i;
end;
if not (ASelection[0] is TControl) then
Exit;
ctrl := TControl(ASelection[0]);
if not (ctrl.Parent is TCustomFlowPanel) then
Exit;
if todelete[0] < todelete[1] then begin
i := todelete[0];
todelete[0] := todelete[1];
todelete[1] := i;
end;
for i := Low(todelete) to High(todelete) do
if todelete[i] >= 0 then
AProperties.Delete(todelete[i]);
AProperties.Add(TFlowPanelControlIndexProperty.Create(TCustomFlowPanel(ctrl.Parent), ctrl, Hook));
end;
initialization
{ we need to register this for TControl as this is applied to each control
that is placed on a TFlowPanel }
RegisterSelectionEditor(TControl, TFlowPanelControlIndexEditor);
end.
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