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restore grid's custom columns after rowcount:=0, bug #6956

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git-svn-id: trunk@9340 -
This commit is contained in:
jesus 2006-05-23 05:25:39 +00:00
parent 713f7851a3
commit 3fc416a384
1 changed files with 34 additions and 2 deletions
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36
lcl/grids.pas
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@ -437,6 +437,12 @@ type
property Visible: Boolean read GetVisible write SetVisible stored IsVisibleStored default true;
end;
TGridPropertyBackup=record
ValidData: boolean;
FixedRowCount: Integer;
FixedColCount: Integer;
end;
{ TGridColumns }
TGridColumns = class(TCollection)
@ -560,6 +566,7 @@ type
FPrevValue: Integer;
FGridBorderStyle: TBorderStyle;
FGridFlags: TGridFlags;
FGridPropBackup: TGridPropertyBackup;
procedure AdjustCount(IsColumn:Boolean; OldValue, NewValue:Integer);
procedure CacheVisibleGrid;
procedure CheckFixedCount(aCol,aRow,aFCol,aFRow: Integer);
@ -1819,8 +1826,11 @@ begin
if (OldValue=0)and(NewValue>=0) then begin
FTopLeft.X:=FFixedCols;
if RowCount=0 then begin
FFixedRows:=0;
FTopLeft.Y:=0;
if Columns.Enabled then
FFixedRows := 1
else
FFixedRows := 0;
FTopLeft.Y:=FFixedRows;
//DebugLn('TCustomGrid.AdjustCount A ',DbgSName(Self),' FTopLeft=',dbgs(FTopLeft));
AddDel(FRows, 1);
FGCache.AccumHeight.Count:=1;
@ -1863,6 +1873,22 @@ begin
if AValue<1 then
clear
else begin
if (OldR=0) and Columns.Enabled then begin
// there are custom columns, setup first enough columns
if FGridPropBackup.ValidData then begin
// Take in count previus fixed columns too.
// This value will be used in ColumnsChanged get
// the right number of columns to setup
//
FFixedCols := FGridPropBackup.FixedColCount;
FGridPropBackup.ValidData:=False;
end;
// setup custom columns
Self.ColumnsChanged(nil);
// still need to adjust rowcount?
if AValue=FRows.Count then
exit;
end;
CheckFixedCount(ColCount, AValue, FFixedCols, FFixedRows);
CheckCount(ColCount, AValue);
AdjustCount(False, OldR, AValue);
@ -5901,6 +5927,12 @@ procedure TCustomGrid.Clear;
var
OldR,OldC: Integer;
begin
// save some properties
FGridPropBackup.ValidData := True;
FGridPropBackup.FixedRowCount := FFixedRows;
FGridPropBackup.FixedColCount := FFixedCols;
// clear structure
OldR:=RowCount;
OldC:=ColCount;
FFixedCols:=0;