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|
unit gui_listview;
{$mode objfpc}{$H+}
interface
uses
Classes,
SysUtils,
gfxbase,
fpgfx,
gfx_widget,
gui_scrollbar;
type
TfpgListView = class;
TfpgLVItem = class;
TfpgLVColumns = class;
{ TfpgLVColumn }
TfpgLVColumn = class(TComponent)
private
FAutoSize: Boolean;
FCaption: String;
FColumnIndex: Integer;
FHeight: Integer;
FVisible: Boolean;
FWidth: Integer;
procedure SetAutoSize(const AValue: Boolean);
procedure SetCaption(const AValue: String);
procedure SetColumnIndex(const AValue: Integer);
procedure SetHeight(const AValue: Integer);
procedure SetVisible(const AValue: Boolean);
procedure SetWidth(const AValue: Integer);
public
constructor Create(AColumns: TfpgLVColumns);
destructor Destroy; override;
property Caption: String read FCaption write SetCaption;
property AutoSize: Boolean read FAutoSize write SetAutoSize;
property Width: Integer read FWidth write SetWidth;
property Height: Integer read FHeight write SetHeight;
property Visible: Boolean read FVisible write SetVisible;
property ColumnIndex: Integer read FColumnIndex write SetColumnIndex;
end;
{ TfpgLVColumns }
TfpgLVColumns = class(TPersistent)
private
FListView: TfpgListView;
FColumns: TList;
function GetColumn(AIndex: Integer): TfpgLVColumn;
procedure SetColumn(AIndex: Integer; const AValue: TfpgLVColumn);
public
constructor Create(AListView: TfpgListView);
destructor Destroy; override;
function Add(AColumn: TfpgLVColumn): Integer;
procedure Delete(AIndex: Integer);
procedure Insert(AColumn: TfpgLVColumn; AIndex: Integer);
function Count: Integer;
property Column[AIndex: Integer]: TfpgLVColumn read GetColumn write SetColumn;
end;
TfpgLVItemState = set of (lisFocused, lisSelected, lisHotTrack);
TfpgLVItemPaintPart = set of (lvppBackground, lvppIcon, lvppText, lvppFocused);
TfpgLVPaintItemEvent = procedure(ListView: TfpgListView; Canvas: TfpgCanvas; Item: TfpgLVItem;
ItemIndex: Integer; Area:TRect; var PaintPart: TfpgLVItemPaintPart) of object;
IfpgLVItemViewer = interface
procedure ItemDeleted(AIndex: Integer);
procedure ItemAdded(AIndex: Integer);
procedure ItemChanged(AIndex: Integer);
end;
{ TfpgLVItems }
TfpgLVItems = class(TObject)
private
FUpdateCount: Integer;
FColumns: TfpgLVColumns;
FViewers: TList;
FItems: TList;
function GetCapacity: Integer;
function GetItem(AIndex: Integer): TfpgLVItem;
procedure SetCapacity(const AValue: Integer);
procedure SetItem(AIndex: Integer; const AValue: TfpgLVItem);
procedure AddViewer(AValue: IfpgLVItemViewer);
procedure DeleteViewer(AValue: IfpgLVItemViewer);
procedure DoChange(AItem: TfpgLVItem);
procedure DoAdd(AItem: TfpgLVItem);
procedure DoDelete(AItem: TfpgLVItem);
protected
public
constructor Create(AViewer: IfpgLVItemViewer);
destructor Destroy; override;
function Add(AItem: TfpgLVItem): Integer;
function Count: Integer;
procedure Delete(AIndex: Integer);
function IndexOf(AItem: TfpgLVItem): Integer;
procedure InsertItem(AItem: TfpgLVItem; AIndex: Integer);
procedure BeginUpdate;
procedure EndUpdate;
property Capacity: Integer read GetCapacity write SetCapacity;
property Columns: TfpgLVColumns read FColumns;
property Item[AIndex: Integer]: TfpgLVItem read GetItem write SetItem;
end;
TfpgLVItem = class(TObject)
private
FCaption: String;
FItems: TfpgLVItems;
FSubItems: TStrings;
function GetSelected(ListView: TfpgListView): Boolean;
procedure SetCaption(const AValue: String);
procedure SetSelected(ListView: TfpgListView; const AValue: Boolean);
procedure SubItemsChanged(Sender: TObject);
public
constructor Create(Items: TfpgLVItems); virtual;
destructor Destroy; override;
property Caption: String read FCaption write SetCaption;
property SubItems: TStrings read FSubItems;
property Selected[ListView: TfpgListView]: Boolean read GetSelected write SetSelected;
end;
{ TfpgListView }
TfpgListView = class(TfpgWidget, IfpgLVItemViewer)
private
FItemIndex: Integer;
FMultiSelect: Boolean;
FSelected: TList;
FUpdateCount: Integer;
FVScrollBar,
FHScrollBar: TfpgScrollBar;
FColumns: TfpgLVColumns;
FItems: TfpgLVItems;
FOnPaintItem: TfpgLVPaintItemEvent;
FShowHeaders: Boolean;
function GetItemHeight: Integer;
procedure
SetItemIndex(const AValue: Integer);
procedure SetItems(const AValue: TfpgLVItems);
procedure SetMultiSelect(const AValue: Boolean);
procedure SetShowHeaders(const AValue: Boolean);
procedure VScrollChange(Sender: TObject; Position: Integer);
procedure HScrollChange(Sender: TObject; Position: Integer);
// interface methods
procedure ItemDeleted(AIndex: Integer);
procedure ItemAdded(AIndex: Integer);
procedure ItemChanged(AIndex: Integer);
function ItemGetSelected(const AItem: TfpgLVItem): Boolean;
procedure ItemSetSelected(const AItem: TfpgLVItem; const AValue: Boolean);
function ItemGetFromPoint(const X, Y: Integer): TfpgLVItem;
function ItemGetRect(AIndex: Integer): TRect;
function ItemIndexFromY(Y: Integer): Integer;
function HeaderHeight: Integer;
procedure DoRepaint;
protected
procedure HandleMouseScroll(x, y: integer; shiftstate: TShiftState; delta: smallint); override;
procedure HandleLMouseDown(x, y: integer; shiftstate: TShiftState); override;
procedure HandlePaint; override;
procedure HandleResize(awidth, aheight: TfpgCoord); override;
procedure PaintHeaders; virtual;
procedure PaintItems; virtual;
procedure UpdateScrollBarPositions; virtual;
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
procedure BeginUpdate;
procedure EndUpdate;
function ItemAdd: TfpgLVItem;
property Columns: TfpgLVColumns read FColumns;
property Items: TfpgLVItems read FItems write SetItems;
property OnPaintItem: TfpgLVPaintItemEvent read FOnPaintItem write FOnPaintItem;
property ShowHeaders: Boolean read FShowHeaders write SetShowHeaders;
property MultiSelect: Boolean read FMultiSelect write SetMultiSelect;
property VScrollBar: TfpgScrollBar read FVScrollBar;
property HScrollBar: TfpgScrollBar read FHScrollBar;
property ItemHeight: Integer read GetItemHeight;
property ItemIndex: Integer read FItemIndex write SetItemIndex;
end;
implementation
{ TfpgLVItems }
function TfpgLVItems.GetItem(AIndex: Integer): TfpgLVItem;
begin
Result := TfpgLVItem(FItems.Items[AIndex]);
end;
function TfpgLVItems.GetCapacity: Integer;
begin
Result := FItems.Capacity;
end;
procedure TfpgLVItems.SetCapacity(const AValue: Integer);
begin
FItems.Capacity := AValue;
end;
procedure TfpgLVItems.SetItem(AIndex: Integer; const AValue: TfpgLVItem);
begin
FItems.Items[AIndex] := AValue;
end;
procedure TfpgLVItems.AddViewer(AValue: IfpgLVItemViewer);
begin
if AValue <> nil then
FViewers.Add(AValue);
end;
procedure TfpgLVItems.DeleteViewer(AValue: IfpgLVItemViewer);
var
AIndex: Integer;
begin
AIndex := FViewers.IndexOf(AValue);
if AIndex > -1 then begin
FViewers.Delete(AIndex);
end;
if FViewers.Count = 0 then Free;
end;
procedure TfpgLVItems.DoChange(AItem: TfpgLVItem);
var
I: Integer;
AIndex: Integer;
begin
if FUpdateCount > 0 then Exit;
AIndex := IndexOf(AItem);
for I := 0 to FViewers.Count -1 do begin
IfpgLVItemViewer(FViewers.Items[I]).ItemChanged(AIndex);
end;
end;
procedure TfpgLVItems.DoAdd(AItem: TfpgLVItem);
var
I: Integer;
AIndex: Integer;
begin
if FUpdateCount > 0 then Exit;
AIndex := IndexOf(AItem);
for I := 0 to FViewers.Count -1 do begin
IfpgLVItemViewer(FViewers.Items[I]).ItemAdded(AIndex);
end;
end;
procedure TfpgLVItems.DoDelete(AItem: TfpgLVItem);
var
I: Integer;
AIndex: Integer;
begin
if FUpdateCount > 0 then Exit;
AIndex := IndexOf(AItem);
for I := 0 to FViewers.Count -1 do begin
IfpgLVItemViewer(FViewers.Items[I]).ItemDeleted(AIndex);
end;
end;
constructor TfpgLVItems.Create(AViewer: IfpgLVItemViewer);
begin
FItems := TList.Create;
FViewers := TList.Create;
AddViewer(AViewer);
end;
destructor TfpgLVItems.Destroy;
begin
FItems.Free;
FViewers.Free;
inherited Destroy;
end;
function TfpgLVItems.Add(AItem: TfpgLVItem): Integer;
begin
Result := Count;
InsertItem(AItem, Count);
DoAdd(AItem);
end;
function TfpgLVItems.Count: Integer;
begin
Result := FItems.Count;
end;
procedure TfpgLVItems.Delete(AIndex: Integer);
begin
DoDelete(GetItem(AIndex));
FItems.Delete(AIndex);
end;
function TfpgLVItems.IndexOf(AItem: TfpgLVItem): Integer;
begin
Result := FItems.IndexOf(AItem);
end;
procedure TfpgLVItems.InsertItem(AItem: TfpgLVItem; AIndex: Integer);
begin
if AItem.InheritsFrom(TfpgLVItem) then
FItems.Insert(AIndex, AItem)
else
raise Exception.Create('Item is not of TfpgLVItem type!');
end;
procedure TfpgLVItems.BeginUpdate;
begin
Inc(FUpdateCount);
end;
procedure TfpgLVItems.EndUpdate;
begin
Dec(FUpdateCount);
if FUpdateCount < 0 then FUpdateCount := 0;
end;
{ TfpgLVItem }
procedure TfpgLVItem.SetCaption(const AValue: String);
begin
if FCaption=AValue then exit;
FCaption:=AValue;
if Assigned(FItems) then FItems.DoChange(Self);
end;
function TfpgLVItem.GetSelected(ListView: TfpgListView): Boolean;
begin
Result := ListView.ItemGetSelected(Self);
end;
procedure TfpgLVItem.SetSelected(ListView: TfpgListView; const AValue: Boolean);
begin
ListView.ItemSetSelected(Self, AValue);
end;
procedure TfpgLVItem.SubItemsChanged(Sender: TObject);
begin
if Assigned(FItems) then
FItems.DoChange(Self);
end;
constructor TfpgLVItem.Create(Items: TfpgLVItems);
begin
FItems := Items;
FSubItems := TStringList.Create;
TStringList(FSubItems).OnChange := @SubItemsChanged;
end;
destructor TfpgLVItem.Destroy;
begin
FSubItems.Free;
inherited Destroy;
end;
{ TfpgListView }
procedure TfpgListView.SetShowHeaders(const AValue: Boolean);
begin
if FShowHeaders=AValue then exit;
FShowHeaders:=AValue;
DoRePaint;
end;
procedure TfpgListView.VScrollChange(Sender: TObject; Position: Integer);
begin
DoRepaint;
end;
procedure TfpgListView.HScrollChange(Sender: TObject; Position: Integer);
begin
DoRepaint;
end;
procedure TfpgListView.SetItems(const AValue: TfpgLVItems);
begin
if AValue = FItems then Exit;
AValue.AddViewer(Self);
FItems.DeleteViewer(Self);
Fitems := AValue;
end;
procedure TfpgListView.SetMultiSelect(const AValue: Boolean);
begin
if FMultiSelect=AValue then exit;
FMultiSelect:=AValue;
end;
function TfpgListView.GetItemHeight: Integer;
begin
Result := Canvas.Font.Height + 4;
end;
procedure TfpgListView.SetItemIndex(const AValue: Integer);
begin
if FItemIndex=AValue then exit;
FItemIndex:=AValue;
end;
procedure TfpgListView.ItemDeleted(AIndex: Integer);
begin
if FUpdateCount = 0 then DoRePaint;
end;
procedure TfpgListView.ItemAdded(AIndex: Integer);
begin
if FUpdateCount = 0 then DoRePaint;
end;
procedure TfpgListView.ItemChanged(AIndex: Integer);
begin
if FUpdateCount = 0 then DoRePaint;
// TODO
end;
function TfpgListView.ItemGetSelected(const AItem: TfpgLVItem): Boolean;
begin
Result := FSelected.IndexOf(AItem) > -1;
end;
procedure TfpgListView.ItemSetSelected(const AItem: TfpgLVItem; const AValue: Boolean);
var
Index: Integer;
begin
Index := FSelected.IndexOf(AItem);
if AValue and (Index = -1) then
FSelected.Add(AItem);
if (AValue = False) and (Index <> -1) then
FSelected.Delete(Index);
end;
function TfpgListView.ItemGetFromPoint(const X, Y: Integer): TfpgLVItem;
var
Index: Integer;
ItemTop: Integer;
begin
Result := nil;
ItemTop := (FVScrollBar.Position + Y) -2;
if ShowHeaders then Dec(ItemTop, HeaderHeight);
Index := ItemTop div ItemHeight;
if Index < 0 then Exit;
if Index >= FItems.Count then Exit;
Result := FItems.Item[Index];
end;
function TfpgListView.ItemGetRect(AIndex: Integer): TRect;
begin
Result.Top := 2 + (AIndex * ItemHeight) - FVScrollBar.Position;
if ShowHeaders then Inc(Result.Top, HeaderHeight);
Result.Bottom := Result.Top + ItemHeight-1;
Result.Left := 2 - FHScrollBar.Position;
Result.Right := Width - 4;
if FVScrollBar.Visible then Dec(Result.Right, FVScrollBar.Width);
end;
function TfpgListView.ItemIndexFromY(Y: Integer): Integer;
var
TopPos: Integer;
begin
if ShowHeaders and (Y < HeaderHeight) then Exit(-1);
TopPos := (FVScrollBar.Position + Y) - 2;
if ShowHeaders then Dec(TopPos, HeaderHeight);
Result := TopPos div ItemHeight;
if Result > Fitems.Count-1 then Result := -1;
end;
function TfpgListView.HeaderHeight: Integer;
begin
Result := Canvas.Font.Height + 10;
end;
procedure TfpgListView.DoRepaint;
begin
if FUpdateCount = 0 then RePaint;
end;
procedure TfpgListView.HandleMouseScroll(x, y: integer;
shiftstate: TShiftState; delta: smallint);
begin
// Yes this is a dirty dirty hack
TfpgListView(FVScrollBar).HandleMouseScroll(x, y, shiftstate, delta);
end;
procedure TfpgListView.HandleLMouseDown(x, y: integer; shiftstate: TShiftState
);
var
Item: TfpgLVItem;
MinY, MinX, MaxY, MaxX: Integer;
begin
inherited HandleLMouseDown(x, y, shiftstate);
MinY := 2; MinX := 2; MaxY := Height -2; MaxX := Width -2;
if FVScrollBar.Visible then Dec(MaxX, FVScrollBar.Width);
if FHScrollBar.Visible then Dec(MaxY, FHScrollBar.Height);
if FShowHeaders then begin
// TODO HeaderClick
Inc(MinY, HeaderHeight);
end;
if (X > MaxX) or (X < MinX) or (Y > MaxY) or (Y < MinY) then Exit;
Item := ItemGetFromPoint(X, Y);
if not FMultiSelect then FSelected.Clear;
if Item <> nil then begin
FItemIndex := ItemIndexFromY(Y);
if FMultiSelect then begin
if not ((ssCtrl in shiftstate) or (ssShift in shiftstate)) then begin
FSelected.Clear;
ItemSetSelected(Item, True);
end
else begin
if ssCtrl in shiftstate then
ItemSetSelected(Item, not ItemGetSelected(Item));
if ssShift in shiftstate then ;
end
end
else ItemSetSelected(Item, True);
end;
DoRepaint;
end;
procedure TfpgListView.HandlePaint;
begin
if FUpdateCount > 0 then Exit;
Canvas.BeginDraw;
UpdateScrollBarPositions;
Canvas.Clear(clListBox);
PaintItems;
if ShowHeaders then
PaintHeaders;
fpgStyle.DrawControlFrame(Canvas, 0,0,Width,Height);
Canvas.EndDraw;
end;
procedure TfpgListView.HandleResize(awidth, aheight: TfpgCoord);
begin
inherited HandleResize(awidth, aheight);
UpdateScrollBarPositions;
end;
procedure TfpgListView.PaintHeaders;
var
I: Integer;
cLeft,
cTop: Integer;
Column: TfpgLVColumn;
begin
cLeft := 2;
if FHScrollBar.Visible then Dec(cLeft, FHScrollBar.Position);
cTop := 2;
for I := 0 to Columns.Count-1 do begin
Column := Columns.Column[I];
if Column.Visible then begin
fpgStyle.DrawButtonFace(Canvas,cLeft, cTop, cLeft+Column.Width, Canvas.Font.Height+10, [btnIsEmbedded]);
fpgStyle.DrawString(Canvas, cLeft+5, cTop+5, Column.Caption, Enabled);
Inc(cLeft, Column.Width);
end;
end;
if cLeft < FWidth-2 then begin
fpgStyle.DrawButtonFace(Canvas,cLeft, cTop, cLeft+(Width-2-cLeft), Canvas.Font.Height+10, [btnIsEmbedded, btnIsPressed]);
end;
end;
procedure TfpgListView.PaintItems;
var
VisibleItem: TfpgLVItem;
FirstIndex,
LastIndex: Integer;
I, J : Integer;
PaintPart: TfpgLVItemPaintPart;
ItemRect: TRect;
ItemState: TfpgLVItemState;
Item: TfpgLVItem;
TheText: String;
TextColor: TfpgColor;
ColumnIndex: Integer;
begin
FirstIndex := (FVScrollBar.Position) div ItemHeight;
LastIndex := (FVScrollBar.Position+(Height-4)) div ItemHeight;
if LastIndex > Fitems.Count-1 then LastIndex := FItems.Count-1;
//WriteLn('FirstIndex = ', FirstIndex, ' LastIndex = ', LastIndex);
for I := FirstIndex to LastIndex do begin
ItemState := [];
PaintPart := [lvppBackground, lvppIcon, lvppText];
ItemRect := ItemGetRect(I);
Item := FItems.Item[I];
if Item.Selected[Self] then Include(ItemState, lisSelected);
if FItemIndex = I then begin
Include(ItemState, lisFocused);
Include(PaintPart, lvppFocused);
end;
if lisSelected in (ItemState) then begin
Canvas.Color := clBlue;
end
else Canvas.Color := clListBox;
Canvas.FillRectangle(ItemRect);
Exclude(PaintPart, lvppBackground);
TextColor := Canvas.TextColor;
if Assigned(FOnPaintItem) then FOnPaintItem(Self, Canvas, Item, I, ItemRect, PaintPart);
if lvppIcon in PaintPart then begin
// TODO paint icon
end;
if lvppFocused in PaintPart then begin
Canvas.Color := clBlack;
canvas.DrawRectangle(ItemRect);
end;
if lvppText in PaintPart then begin
if lisSelected in ItemState then Canvas.TextColor := clwhite;//Canvas.Color xor Canvas.Color;
for J := 0 to FColumns.Count -1 do begin;
if FColumns.Column[J].Visible then begin
if FColumns.Column[J].ColumnIndex <> -1 then
ColumnIndex := FColumns.Column[J].ColumnIndex
else ColumnIndex := J;
if ColumnIndex = 0 then
TheText := Item.Caption
else if item.SubItems.Count > ColumnIndex then
TheText := Item.SubItems.Strings[ColumnIndex-1]
else
TheText := '';
fpgStyle.DrawString(Canvas, ItemRect.Left+5, ItemRect.Top+2, TheText, Enabled);
Inc(ItemRect.Left, FColumns.Column[J].Width);
//WriteLn(ItemRect.Left,' ', ItemRect.Top, ' ', ItemRect.Right, ' ', ItemRect.Bottom);
end;
end;
end;
Canvas.TextColor := TextColor;
end;
end;
procedure TfpgListView.UpdateScrollBarPositions;
var
BevelSize: Integer;
I: Integer;
MaxH,
MaxV: Integer;
begin
MaxH := 0;
MaxV := 0;
BevelSize := 2;
for I := 0 to Columns.Count -1 do begin
if Columns.Column[I].Visible then
Inc(MaxH, Columns.Column[I].Width);
end;
MaxV := (FItems.Count+2) * ItemHeight - (Height);
if ShowHeaders then Inc(MaxV, HeaderHeight);
if FHScrollBar.Visible then begin
FHScrollBar.Top := Height - FHScrollBar.Height - (BevelSize );
FHScrollBar.Left := BevelSize;
FHScrollBar.Width := Width - (BevelSize * 2);
end;
if FVScrollBar.Visible then begin
FVScrollBar.Top := BevelSize;
if ShowHeaders then FVScrollBar.Top := FVScrollBar.Top + HeaderHeight;
FVScrollBar.Left := Width - FVScrollBar.Width - (BevelSize );
FVScrollBar.Height := Height - FVScrollBar.Top - BevelSize;
end;
if FVScrollBar.Visible and FHScrollBar.Visible then begin
FHScrollBar.Width := FHScrollBar.Width - FVScrollBar.Width;
FVScrollBar.Height := FVScrollBar.Height - FHScrollBar.Height;
end;
FHScrollBar.Max := MaxH-(Width-(BevelSize * 2));
FVScrollBar.Max := MaxV;
if FVScrollBar.Max = 0 then
FVScrollBar.SliderSize := 1
else
FVScrollBar.SliderSize := FVScrollBar.Height / (FVScrollBar.Max + FVScrollBar.Height);
FVScrollBar.RepaintSlider;
if FHScrollBar.Max = 0 then
FHScrollBar.SliderSize := 1
else
FHScrollBar.SliderSize := FHScrollBar.Width / (FHScrollBar.Max + FHScrollBar.Width);
FHScrollBar.RepaintSlider;
FHScrollBar.UpdateWindowPosition;
FVScrollBar.UpdateWindowPosition;
end;
constructor TfpgListView.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
ShowHeaders := True;
FVScrollBar := TfpgScrollBar.Create(Self);
FVScrollBar.Orientation := orVertical;
FVScrollBar.OnScroll := @VScrollChange;
FVScrollBar.ScrollStep := 5;
FVScrollBar.Position := 0;
FHScrollBar := TfpgScrollBar.Create(Self);
FHScrollBar.Orientation := orHorizontal;
FHScrollBar.OnScroll := @HScrollChange;
FHScrollBar.ScrollStep := 5;
FHScrollBar.Position := 0;
FColumns := TfpgLVColumns.Create(Self);
FItems := TfpgLVItems.Create(Self);
FSelected := TList.Create;
end;
destructor TfpgListView.Destroy;
begin
FItems.DeleteViewer(Self);
FSelected.Free;
inherited Destroy;
end;
procedure TfpgListView.BeginUpdate;
begin
Inc(FUpdateCount);
FItems.BeginUpdate;
end;
procedure TfpgListView.EndUpdate;
begin
FItems.EndUpdate;
Dec(FUpdateCount);
if FUpdateCount < 0 then FUpdateCount := 0;
if FUpdateCount = 0 then DoRePaint;
end;
function TfpgListView.ItemAdd: TfpgLVItem;
begin
Result := TfpgLVItem.Create(FItems);
FItems.Add(Result);
end;
{ TfpgLVColumns }
function TfpgLVColumns.GetColumn(AIndex: Integer): TfpgLVColumn;
begin
Result := TfpgLVColumn(FColumns.Items[AIndex]);
end;
procedure TfpgLVColumns.SetColumn(AIndex: Integer; const AValue: TfpgLVColumn);
begin
FColumns.Items[AIndex] := AValue;
end;
constructor TfpgLVColumns.Create(AListView: TfpgListView);
begin
FListView := AListView;
FColumns := TList.Create;
end;
destructor TfpgLVColumns.Destroy;
begin
FColumns.Free;
inherited Destroy;
end;
function TfpgLVColumns.Add(AColumn: TfpgLVColumn): Integer;
begin
Result := Count;
Insert(AColumn, Count);
end;
procedure TfpgLVColumns.Delete(AIndex: Integer);
begin
FColumns.Delete(AIndex);
end;
procedure TfpgLVColumns.Insert(AColumn: TfpgLVColumn; AIndex: Integer);
begin
FColumns.Insert(AIndex, AColumn);
end;
function TfpgLVColumns.Count: Integer;
begin
Result := FColumns.Count;
end;
{ TfpgLVColumn }
procedure TfpgLVColumn.SetCaption(const AValue: String);
begin
if FCaption=AValue then exit;
FCaption:=AValue;
end;
procedure TfpgLVColumn.SetColumnIndex(const AValue: Integer);
begin
if FColumnIndex=AValue then exit;
FColumnIndex:=AValue;
end;
procedure TfpgLVColumn.SetHeight(const AValue: Integer);
begin
if FHeight=AValue then exit;
FHeight:=AValue;
end;
procedure TfpgLVColumn.SetVisible(const AValue: Boolean);
begin
if FVisible=AValue then exit;
FVisible:=AValue;
end;
procedure TfpgLVColumn.SetAutoSize(const AValue: Boolean);
begin
if FAutoSize=AValue then exit;
FAutoSize:=AValue;
end;
procedure TfpgLVColumn.SetWidth(const AValue: Integer);
begin
if FWidth=AValue then exit;
FWidth:=AValue;
end;
constructor TfpgLVColumn.Create(AColumns: TfpgLVColumns);
begin
FVisible := True;
FColumnIndex := -1;
end;
destructor TfpgLVColumn.Destroy;
begin
inherited Destroy;
end;
end.
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