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root/public/ibx/trunk/ibcontrols/IBDynamicGrid.pas

Comparing ibx/trunk/ibcontrols/IBDynamicGrid.pas (file contents):
Revision 27 by tony, Tue Apr 14 13:10:23 2015 UTC vs.
Revision 217 by tony, Fri Mar 16 10:27:26 2018 UTC

#	Line 23 | Line 23
23		*  Contributor(s): ______________________________________.
24		*
25		*)
26	+
27		unit IBDynamicGrid;
28
29		{$mode objfpc}{$H+}
#	Line 91 | Line 92 | type
92		FListSource: TDataSource;
93		FOnAutoInsert: TAutoInsert;
94		FOnCanAutoInsert: TCanAutoInsert;
95	+	FOnCloseUp: TNotifyEvent;
96		FOnDrawItem: TDrawItemEvent;
97		FOwner: TIBDynamicGridColumn;
98		FRelationName: string;
#	Line 117 | Line 119 | type
119		property Style: TComboBoxStyle read FStyle write FStyle default csDropDown;
120		property OnAutoInsert: TAutoInsert read FOnAutoInsert write FOnAutoInsert;
121		property OnCanAutoInsert: TCanAutoInsert read FOnCanAutoInsert write FOnCanAutoInsert;
122	+	property OnCloseUp: TNotifyEvent read FOnCloseUp write FOnCloseUp;
123		property OnDrawItem: TDrawItemEvent read FOnDrawItem write FOnDrawItem;
124		end;
125
#	Line 147 | Line 150 | end;
150		FGrid: TCustomGrid;
151		FCol,FRow: Integer;
152		FEditText: string;
153	+	function EditingKeyField: boolean;
154		protected
155		procedure WndProc(var TheMessage : TLMessage); override;
156		procedure CloseUp; override;
#	Line 163 | Line 167 | end;
167		property OnEditingDone;
168		end;
169
170	+	TOnSelectPanelEditor = procedure(Sender: TObject; var aEditorPanel: TWinControl) of object;
171	+
172		TDBDynamicGrid = class(TDBGrid)
173		private
174		{ Private declarations }
#	Line 173 | Line 179 | end;
179		FOnEditorPanelHide: TNotifyEvent;
180		FOnEditorPanelShow: TNotifyEvent;
181		FOnKeyDownHander: TKeyDownHandler;
182	+	FOnSelectPanelEditor: TOnSelectPanelEditor;
183		FResizing: boolean;
184		FWeHaveFocus: boolean;
185	<	FHidingEditorPanel: boolean;
186	<	FAllowHide: boolean;
185	>	FMouseDown: boolean;
186	>	function ActiveControl: TControl;
187		procedure DoShowEditorPanel(Data: PtrInt);
188		procedure PositionTotals;
189		procedure KeyDownHandler(Sender: TObject; var Key: Word; Shift: TShiftState);
190	+	procedure PerformEditorHide(Data: PtrInt);
191		procedure SetEditorPanel(AValue: TWinControl);
192		protected
193		procedure ChangeBounds(ALeft, ATop, AWidth, AHeight: integer; KeepBase: boolean); override;
#	Line 217 | Line 225 | end;
225		property OnEditorPanelShow: TNotifyEvent read FOnEditorPanelShow write FOnEditorPanelShow;
226		property OnEditorPanelHide: TNotifyEvent read FOnEditorPanelHide write FOnEditorPanelHide;
227		property OnKeyDownHander: TKeyDownHandler read FOnKeyDownHander write FOnKeyDownHander;
228	+	property OnSelectPanelEditor: TOnSelectPanelEditor read FOnSelectPanelEditor
229	+	write FOnSelectPanelEditor;
230		end;
231
232		{TIBGridControlLink}
#	Line 253 | Line 263 | end;
263		FBookmark: TLocationArray;
264		FDBLookupCellEditor: TDBLookupCellEditor;
265		FActive: boolean;
266	+	FFieldPosition: integer;
267		procedure ColumnHeaderClick(Index: integer);
268		function GetDataSource: TDataSource;
269		function GetEditorBorderStyle: TBorderStyle;
#	Line 298 | Line 309 | end;
309
310		implementation
311
312	<	uses Math, IBQuery, LCLType;
312	>	uses LCLType, Variants, EditBtn;
313
314		{ TIBGridControlLink }
315
#	Line 358 | Line 369 | begin
369		FResizing := true;
370		try
371		ColSum := 0;
361	–	for I := 0 to  ColCount - 1 do
362	–	ColSum := ColSum + ColWidths[I];
372
373	<	if Colsum <> ClientWidth then
373	>	if (ColCount = 1) and TDBDynamicGridColumn(Columns[0]).AutoSizeColumn then
374	>	Columns[0].Width := ClientWidth
375	>	else
376		begin
377	<	ResizeColCount := 0;
378	<	for I := 0 to Columns.Count -1 do
379	<	if TDBDynamicGridColumn(Columns[I]).AutoSizeColumn then
380	<	begin
381	<	Inc(ResizeColCount);
382	<	Colsum := Colsum + TDBDynamicGridColumn(Columns[I]).DesignWidth - Columns[I].Width;
383	<	Columns[I].Width := TDBDynamicGridColumn(Columns[I]).DesignWidth;
384	<	end;
385	<
386	<	if (Colsum < ClientWidth) and (ResizeColCount > 0) then
387	<	begin
388	<	adjustment := (ClientWidth - ColSum) div ResizeColCount;
389	<	n := (ClientWidth - ColSum) mod ResizeColCount;
390	<
391	<	for I := 0 to Columns.Count -1 do
392	<	if TDBDynamicGridColumn(Columns[I]).AutoSizeColumn then
393	<	begin
394	<	if I = 0 then
395	<	Columns[I].Width := Columns[I].Width + adjustment + n
396	<	else
397	<	Columns[I].Width := Columns[I].Width + adjustment;
398	<	end;
399	<	end;
377	>	for I := 0 to  ColCount - 1 do
378	>	if (I < FixedCols) or Columns[I - FixedCols].Visible then
379	>	ColSum := ColSum + ColWidths[I];
380	>
381	>	if Colsum <> ClientWidth then
382	>	begin
383	>	ResizeColCount := 0;
384	>	for I := 0 to Columns.Count -1 do
385	>	if TDBDynamicGridColumn(Columns[I]).AutoSizeColumn and Columns[I].Visible then
386	>	begin
387	>	Inc(ResizeColCount);
388	>	Colsum := Colsum + TDBDynamicGridColumn(Columns[I]).DesignWidth - Columns[I].Width;
389	>	Columns[I].Width := TDBDynamicGridColumn(Columns[I]).DesignWidth;
390	>	end;
391	>
392	>	if (Colsum < ClientWidth) and (ResizeColCount > 0) then
393	>	begin
394	>	adjustment := (ClientWidth - ColSum) div ResizeColCount;
395	>	n := (ClientWidth - ColSum) mod ResizeColCount;
396	>
397	>	for I := 0 to Columns.Count -1 do
398	>	if TDBDynamicGridColumn(Columns[I]).AutoSizeColumn and Columns[I].Visible then
399	>	begin
400	>	if I = 0 then
401	>	Columns[I].Width := Columns[I].Width + adjustment + n
402	>	else
403	>	Columns[I].Width := Columns[I].Width + adjustment;
404	>	end;
405	>	end;
406	>	end;
407		end;
408		PositionTotals;
409		UpdateEditorPanelBounds;
#	Line 399 | Line 417 | begin
417		inherited DoEditorHide;
418		if Editor = FEditorPanel then
419		begin
420	<	if (FExpandedRow >= 0) and (FExpandedRow < RowCount) then
421	<	RowHeights[FExpandedRow] := DefaultRowHeight;
420	>	if FMouseDown then
421	>	Application.QueueAsyncCall(@PerformEditorHide,FExpandedRow)
422	>	else
423	>	PerformEditorHide(FExpandedRow);
424		FExpandedRow := -1;
405	–	if CanFocus then SetFocus;
406	–	if assigned(FOnEditorPanelHide) then
407	–	OnEditorPanelHide(self);
408	–	DoOnResize;
409	–	ResetSizes;
410	–	Invalidate;
425		end;
426		end;
427
428		procedure TDBDynamicGrid.DoEditorShow;
429		begin
430	+	if assigned(DataSource) and assigned(DataSource.DataSet) and
431	+	DataSource.DataSet.Active then
432	+	begin
433	+	if (DataSource.DataSet.RecordCount = 0) and (DataSource.DataSet.State <> dsInsert) then
434	+	DataSource.DataSet.Append
435	+	end;
436		if Editor = FEditorPanel then
437		begin
438		if ExpandEditorPanelBelowRow then
#	Line 425 | Line 445 | begin
445		FEditorPanel.PerformTab(true);  {Select First Control}
446		if assigned(FOnEditorPanelShow) then
447		OnEditorPanelShow(self);
448	+	if assigned(Editor) and Editor.Visible then
449	+	Editor.SetFocus;
450		end
451		else
452		inherited DoEditorShow;
#	Line 489 | Line 511 | begin
511		inherited KeyDown(Key, Shift);
512		end;
513
514	+	function TDBDynamicGrid.ActiveControl: TControl;
515	+	var AParent: TWinControl;
516	+	begin
517	+	Result := nil;
518	+	AParent := Parent;
519	+	while (AParent <> nil) and  not (AParent is TCustomForm) do
520	+	AParent := AParent.Parent;
521	+	if (AParent <> nil) and (AParent is TCustomForm)then
522	+	Result := TCustomForm(AParent).ActiveControl;
523	+	end;
524	+
525		procedure TDBDynamicGrid.DoShowEditorPanel(Data: PtrInt);
526		begin
527		if AppDestroying in Application.Flags then Exit;
#	Line 520 | Line 553 | end;
553		procedure TDBDynamicGrid.KeyDownHandler(Sender: TObject; var Key: Word;
554		Shift: TShiftState);
555		var Done: boolean;
556	+	AControl: TControl;
557		begin
558		if Visible and assigned(FEditorPanel) and FEditorPanel.Visible and FWeHaveFocus then
559		begin
560		Done := false;
561	+	AControl := ActiveControl;
562	+	if (AControl <> nil) and (AControl is TCustomComboBox)
563	+	and ((Key in [VK_UP,VK_DOWN]) or
564	+	(TCustomComboBox(AControl).DroppedDown and (Key = VK_RETURN)) or
565	+	((TCustomComboBox(AControl).Text <> '') and (Key =  VK_ESCAPE))) then
566	+	Exit; {ignore these keys if we are in a  combobox}
567	+
568	+	if (AControl <> nil) and (AControl is TCustomMemo)
569	+	and (Key in [VK_RETURN,VK_UP,VK_DOWN]) then Exit; {Ignore keys in a CustomMemo}
570	+
571	+	if (AControl <> nil) and (AControl is TCustomGrid)
572	+	and (Key in [VK_RETURN,VK_UP,VK_DOWN,VK_TAB]) then Exit; {Ignore keys in a Custom Grid}
573	+
574	+	if (AControl <> nil) and (AControl is TEBEdit) and (AControl.Owner is TDateEdit) then
575	+	begin
576	+	if (Key in [VK_LEFT,VK_RIGHT]) then Exit; {Ignore navigation keys}
577	+	if TDateEdit(AControl.Owner).DroppedDown and
578	+	(Key in [VK_RETURN,VK_UP,VK_DOWN,VK_ESCAPE]) then Exit; {Ignore TCalender navigation keys in a Data edit}
579	+	end;
580	+
581		if assigned(FOnKeyDownHander) then
582		OnKeyDownHander(Sender,Key,Shift,Done);
583		if Done then Exit;
#	Line 546 | Line 600 | begin
600		end
601		end;
602
603	+	procedure TDBDynamicGrid.PerformEditorHide(Data: PtrInt);
604	+	var ExpandedRow: integer;
605	+	begin
606	+	if AppDestroying in Application.Flags then Exit;
607	+	ExpandedRow := integer(Data);
608	+	if (ExpandedRow >= 0) and (ExpandedRow < RowCount) then
609	+	RowHeights[ExpandedRow] := DefaultRowHeight;
610	+	if CanFocus then SetFocus;
611	+	DoOnResize;
612	+	ResetSizes;
613	+	DoOnChangeBounds;
614	+	if assigned(FOnEditorPanelHide) then
615	+	OnEditorPanelHide(self);
616	+	end;
617	+
618		procedure TDBDynamicGrid.SetEditorPanel(AValue: TWinControl);
619		begin
620		if FEditorPanel = AValue then Exit;
621		if FEditorPanel <> nil then
622		RemoveFreeNotification(FEditorPanel);
623		FEditorPanel := AValue;
624	<	FreeNotification(FEditorPanel);
624	>	if FEditorPanel <> nil then
625	>	FreeNotification(FEditorPanel);
626		end;
627
628		procedure TDBDynamicGrid.ChangeBounds(ALeft, ATop, AWidth, AHeight: integer;
#	Line 580 | Line 650 | begin
650		inherited Loaded;
651		if assigned(FEditorPanel) and not (csDesigning in ComponentState)then
652		FEditorPanel.Visible := false;
653	<	DoGridResize
653	>	if Visible then
654	>	DoGridResize
655		end;
656
657		procedure TDBDynamicGrid.DoOnResize;
#	Line 604 | Line 675 | procedure TDBDynamicGrid.MouseDown(Butto
675		Y: Integer);
676		var Coord: TGridCoord;
677		begin
678	<	inherited MouseDown(Button, Shift, X, Y);
678	>	FMouseDown := true;
679	>	try
680	>	inherited MouseDown(Button, Shift, X, Y);
681	>	finally
682	>	FMouseDown := false;
683	>	end;
684
685		Coord := MouseCoord(X,Y);
686		if (Coord.X = 0) and (Coord.Y > 0) then
#	Line 613 | Line 689 | end;
689
690		procedure TDBDynamicGrid.Notification(AComponent: TComponent;
691		Operation: TOperation);
692	+	var i: integer;
693		begin
694		inherited Notification(AComponent, Operation);
695	<	if (Operation = opRemove) and
696	<	(AComponent = FEditorPanel) then FEditorPanel := nil;
695	>	if (Operation = opRemove) and not (csDestroying in ComponentState) then
696	>	begin
697	>	if AComponent = FEditorPanel then
698	>	FEditorPanel := nil
699	>	else
700	>	if AComponent is TControl then
701	>	begin
702	>	for i := 0 to Columns.Count - 1 do
703	>	if TDBDynamicGridColumn(Columns[I]).ColumnTotalsControl = AComponent then
704	>	TDBDynamicGridColumn(Columns[I]).ColumnTotalsControl := nil;
705	>	end;
706	>	end
707		end;
708
709		procedure TDBDynamicGrid.TopLeftChanged;
#	Line 629 | Line 716 | procedure TDBDynamicGrid.UpdateActive;
716		begin
717		inherited UpdateActive;
718
719	+	if not (csLoading in ComponentState) and assigned(DataLink)
720	+	and assigned(DataLink.DataSet) and DataLink.DataSet.Active then
721	+	DoGridResize;
722	+
723		if not (csLoading in ComponentState) and assigned(DataLink) and
724	+	assigned(FEditorPanel) and not FEditorPanel.Visible and
725		assigned(DataLink.DataSet) and (DataLink.DataSet.State = dsInsert) then
726		Application.QueueAsyncCall(@DoShowEditorPanel,0);
727		end;
#	Line 662 | Line 754 | end;
754		procedure TDBDynamicGrid.HideEditorPanel;
755		begin
756		if Editor = FEditorPanel then
757	<	EditorMode := false;
757	>	EditorMode := false;
758		end;
759
760		procedure TDBDynamicGrid.ShowEditorPanel;
761	+	var aEditor: TWinControl;
762		begin
763		if (csDesigning in ComponentState) or
764		(DataSource = nil) or (DataSource.DataSet = nil)
765		or ((DataSource.DataSet.RecordCount = 0) and (DataSource.DataSet.State <> dsInsert)) then
766		Exit;
767	<	Editor := FEditorPanel;
767	>	aEditor := FEditorPanel;
768	>	if assigned(FOnSelectPanelEditor) then
769	>	OnSelectPanelEditor(self,aEditor);
770	>	if FEditorPanel <> aEditor then
771	>	SetEditorPanel(aEditor);
772	>	Editor := aEditor;
773		EditorMode := true;
774		end;
775
#	Line 710 | Line 808 | begin
808		Result := inherited Width
809		end;
810
811	+	type
812	+	THackedGrid = class(TIBDynamicGrid)
813	+	public
814	+	property FixedCols;
815	+	end;
816	+
817		{ TDBLookupCellEditor }
818
819	+	function TDBLookupCellEditor.EditingKeyField: boolean;
820	+	begin
821	+	with TIBDynamicGridColumn(TDBGrid(FGrid).Columns[FCol - THackedGrid(FGrid).FixedCols]) do
822	+	Result := CompareText(FieldName, DBLookupProperties.DataFieldName) = 0;
823	+	end;
824	+
825		procedure TDBLookupCellEditor.WndProc(var TheMessage: TLMessage);
826		begin
827		if TheMessage.msg=LM_KILLFOCUS then begin
#	Line 730 | Line 840 | begin
840		UpdateData(nil); {Force Record Update}
841		if FGrid<>nil then
842		Begin
843	<	(FGrid as TIBDynamicGrid).EditorTextChanged(FCol, FRow, Trim(Text));
843	>	if EditingKeyField then
844	>	begin
845	>	if not VarIsNull(KeyValue) then
846	>	(FGrid as TIBDynamicGrid).EditorTextChanged(FCol, FRow, KeyValue)
847	>	end
848	>	else
849	>	(FGrid as TIBDynamicGrid).EditorTextChanged(FCol, FRow, Trim(Text));
850		(FGrid as TIBDynamicGrid).UpdateData;
851		end;
852		inherited CloseUp;
#	Line 755 | Line 871 | begin
871		CheckAndInsert;
872		Msg.Col := FCol;
873		Msg.Row := FRow;
874	<	Msg.Value:= Trim(Text);
874	>	if EditingKeyField then
875	>	begin
876	>	if not VarIsNull(KeyValue) then
877	>	Msg.Value:= KeyValue
878	>	else
879	>	Msg.Value:= ''
880	>	end
881	>	else
882	>	Msg.Value:= Trim(Text);
883		end;
884
885		procedure TDBLookupCellEditor.msg_SetGrid(var Msg: TGridMessage);
#	Line 770 | Line 894 | begin
894		FCol := Msg.Col;
895		FRow := Msg.Row;
896		FEditText := Msg.Value;
773	–	SelStart := Length(Text);
897		TIBDynamicGrid(FGrid).SetupEditor(self,FCol);
898		end;
899
#	Line 819 | Line 942 | begin
942		Editor.OnAutoInsert := OnAutoInsert;
943		Editor.OnCanAutoInsert := OnCanAutoInsert;
944		Editor.OnDrawItem := OnDrawItem;
945	+	Editor.OnCloseUp := OnCloseUp;
946
947		{Setup Data Links}
948		if KeyField <> '' then
#	Line 843 | Line 967 | begin
967		if DataFieldName <> '' then
968		Editor.DataSource := TDBGrid(Grid).DataSource;
969		end;
970	<	Editor.Text := Editor.FEditText;
970	>	if Editor.EditingKeyField then
971	>	begin
972	>	if not Field.IsNull then
973	>	Editor.KeyValue := Editor.FEditText
974	>	end
975	>	else
976	>	Editor.Text := Editor.FEditText;
977	>	Editor.SelStart := Length(Editor.Text);
978		end;
979
980		procedure TIBDynamicGridColumn.SetInitialSortColumn(AValue: boolean);
#	Line 867 | Line 998 | end;
998		destructor TIBDynamicGridColumn.Destroy;
999		begin
1000		if assigned(FDBLookupProperties) then FDBLookupProperties.Free;
1001	+	Application.RemoveAsyncCalls(self);
1002		inherited Destroy;
1003		end;
1004
#	Line 884 | Line 1016 | begin
1016		OnColumnHeaderClick(self,Index);
1017
1018		FLastColIndex := Index;
1019	<	if assigned(DataSource) and assigned(DataSource.DataSet) and DataSource.DataSet.Active then
1019	>	FFieldPosition := 0;
1020	>	if assigned(DataSource) and assigned(DataSource.DataSet) and DataSource.DataSet.Active
1021	>	and (DataSource.DataSet is TIBParserDataSet) then
1022		begin
1023	+	if FLastColIndex < Columns.Count then
1024	+	{try and cache field position while dataset still open}
1025	+	FFieldPosition := TIBParserDataSet(DataSource.DataSet).Parser.GetFieldPosition(Columns[FLastColIndex].FieldName);
1026		DataSource.DataSet.Active := false;
1027		Application.QueueAsyncCall(@DoReopen,0)
1028		end;
#	Line 933 | Line 1070 | begin
1070		for i := 0 to Columns.Count - 1 do
1071		begin
1072		if TIBDynamicGridColumn(columns[i]).InitialSortColumn then
1073	+	begin
1074	+	FFieldPosition := 0;
1075		FLastColIndex := i
1076	+	end
1077		end
1078		end;
1079
#	Line 950 | Line 1090 | end;
1090
1091		procedure TIBDynamicGrid.UpdateSQL(Sender: TObject; Parser: TSelectSQLParser);
1092		var OrderBy: string;
953	–	FieldPosition: integer;
1093		begin
1094		if assigned(DataSource) and assigned(DataSource.DataSet)
1095		and (DataSource.DataSet is TIBCustomDataSet) then
1096		begin
1097	<	if (FLastColIndex < 0) or (FLastColIndex >= Columns.Count) then Exit;
1098	<	FieldPosition := Parser.GetFieldPosition(Columns[FLastColIndex].FieldName);
1099	<	if FieldPosition = 0 then Exit;
1100	<
1101	<	if Descending then
1102	<	Parser.OrderByClause := IntToStr(FieldPosition) + ' desc'
1103	<	else
1104	<	Parser.OrderByClause := IntToStr(FieldPosition) + ' asc';
1097	>	if (FFieldPosition = 0) and (FLastColIndex >= 0) and (FLastColIndex < Columns.Count) then
1098	>	{Not cached - let's hope we can find it before the dataset is opened.
1099	>	Won't work if dynamic columns}
1100	>	FFieldPosition := Parser.GetFieldPosition(Columns[FLastColIndex].FieldName);
1101	>	if FFieldPosition > 0 then
1102	>	begin
1103	>	if Descending then
1104	>	Parser.OrderByClause := IntToStr(FFieldPosition) + ' desc'
1105	>	else
1106	>	Parser.OrderByClause := IntToStr(FFieldPosition) + ' asc';
1107	>	end;
1108
1109		if assigned(FOnUpdateSortOrder) then
1110		begin
#	Line 1049 | Line 1191 | end;
1191		procedure TIBDynamicGrid.Loaded;
1192		begin
1193		inherited Loaded;
1194	+	IBControlLinkChanged;
1195		ProcessColumns;
1196		end;
1197
#	Line 1104 | Line 1247 | end;
1247
1248		procedure TIBDynamicGrid.Notification(AComponent: TComponent;
1249		Operation: TOperation);
1250	+	var i: integer;
1251		begin
1252		inherited Notification(AComponent, Operation);
1253	<	if (Operation = opRemove) and
1254	<	(FIBControlLink <> nil) and (AComponent = DataSource) then FIBControlLink.IBDataSet := nil;
1253	>	if (Operation = opRemove) then
1254	>	begin
1255	>	if (FIBControlLink <> nil) and (AComponent = DataSource) then
1256	>	FIBControlLink.IBDataSet := nil
1257	>	else
1258	>	if AComponent is TDataSource then
1259	>	begin
1260	>	for i := 0 to Columns.Count - 1 do
1261	>	if TIBDynamicGridColumn(Columns[I]).DBLookupProperties.ListSource = AComponent then
1262	>	TIBDynamicGridColumn(Columns[I]).DBLookupProperties.ListSource := nil;
1263	>	end
1264	>	end
1265		end;
1266
1267		procedure TIBDynamicGrid.UpdateActive;
#	Line 1137 | Line 1291 | begin
1291		if assigned(FIBControlLink) then FIBControlLink.Free;
1292		if assigned(FIndexFieldsList) then FIndexFieldsList.Free;
1293		if assigned(FDBLookupCellEditor) then FDBLookupCellEditor.Free;
1294	+	Application.RemoveAsyncCalls(self);
1295		inherited Destroy;
1296		end;
1297

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