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root/public/ibx/trunk/ibcontrols/IBDynamicGrid.pas
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Comparing ibx/trunk/ibcontrols/IBDynamicGrid.pas (file contents):
Revision 26 by tony, Fri Mar 13 10:26:52 2015 UTC vs.
Revision 27 by tony, Tue Apr 14 13:10:23 2015 UTC

# Line 31 | Line 31 | interface
31  
32   uses
33    Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, DBGrids, DB,
34 <  IBSqlParser, Grids, IBLookupComboEditBox, LMessages, StdCtrls, ExtCtrls;
34 >  IBSQLParser, Grids, IBLookupComboEditBox, LMessages, StdCtrls, ExtCtrls,
35 >  IBCustomDataSet;
36  
37   type
38    {
# Line 55 | Line 56 | type
56    TOnUpdateSortOrder = procedure (Sender: TObject; ColIndex: integer; var OrderBy: string) of Object;
57    TKeyDownHandler = procedure (Sender: TObject; var Key: Word;  Shift: TShiftState; var Done: boolean) of object;
58  
58 –  { TDynamicGridDataLink }
59 –
60 –  TDynamicGridDataLink = class(TDataLink)
61 –  private
62 –    FOwner: TIBDynamicGrid;
63 –  protected
64 –    procedure DataEvent(Event: TDataEvent; Info: Ptrint); override;
65 –    procedure DataSetScrolled(Distance: Integer); override;
66 –  public
67 –    constructor Create(AOwner: TIBDynamicGrid);
68 –  end;
69 –
59    { TDBDynamicGridColumn }
60  
61    TDBDynamicGridColumn = class(TColumn)
# Line 162 | Line 151 | end;
151      procedure WndProc(var TheMessage : TLMessage); override;
152      procedure CloseUp; override;
153      procedure KeyDown(var Key : Word; Shift : TShiftState); override;
154 +    procedure Loaded; override;
155      procedure msg_GetValue(var Msg: TGridMessage); message GM_GETVALUE;
156      procedure msg_SetGrid(var Msg: TGridMessage); message GM_SETGRID;
157      procedure msg_SetValue(var Msg: TGridMessage); message GM_SETVALUE;
# Line 219 | Line 209 | end;
209      constructor Create(TheComponent: TComponent); override;
210      destructor Destroy ;override;
211      procedure ResizeColumns;
212 +    property VisibleRowCount;
213    published
214      property EditorPanel: TWinControl read FEditorPanel write SetEditorPanel;
215      property ExpandEditorPanelBelowRow: boolean read FExpandEditorPanelBelowRow write FExpandEditorPanelBelowRow;
# Line 228 | Line 219 | end;
219      property OnKeyDownHander: TKeyDownHandler read FOnKeyDownHander write FOnKeyDownHander;
220   end;
221  
222 +  {TIBGridControlLink}
223 +
224 +  TIBGridControlLink = class(TIBControlLink)
225 +  private
226 +    FOwner: TIBDynamicGrid;
227 +  protected
228 +    procedure UpdateSQL(Sender: TObject); override;
229 +  public
230 +    constructor Create(AOwner: TIBDynamicGrid);
231 +  end;
232 +
233 +  TLocationArray = array of variant;
234 +  PLocationArray = ^TLocationArray;
235 +  TOnRestorePosition = procedure(Sender: TObject; Location: PLocationArray) of object;
236 +
237    { TIBDynamicGrid }
238  
239    TIBDynamicGrid = class(TDBDynamicGrid)
240    private
241      { Private declarations }
242      FAllowColumnSort: boolean;
243 <    FDataLink: TDynamicGridDataLink;
243 >    FIBControlLink: TIBGridControlLink;
244      FOnColumnHeaderClick: TOnColumnHeaderClick;
245 +    FOnRestorePosition: TOnRestorePosition;
246      FOnUpdateSortOrder: TOnUpdateSortOrder;
247      FDefaultPositionAtEnd: boolean;
248      FDescending: boolean;
# Line 243 | Line 250 | end;
250      FLastColIndex: integer;
251      FIndexFieldNames: string;
252      FIndexFieldsList: TStringList;
253 <    FBookmark: array of variant;
253 >    FBookmark: TLocationArray;
254      FDBLookupCellEditor: TDBLookupCellEditor;
255      FActive: boolean;
256      procedure ColumnHeaderClick(Index: integer);
257      function GetDataSource: TDataSource;
258      function GetEditorBorderStyle: TBorderStyle;
259 +    procedure IBControlLinkChanged;
260      procedure SetDataSource(AValue: TDataSource);
261      procedure SetEditorBorderStyle(AValue: TBorderStyle);
262      procedure ProcessColumns;
263      procedure SetIndexFieldNames(AValue: string);
264      procedure UpdateSQL(Sender: TObject; Parser: TSelectSQLParser);
265      procedure UpdateSortColumn(Sender: TObject);
266 <    procedure DataSetScrolled(Sender: TObject);
267 <    procedure RestorePosition(Data: PtrInt);
266 >    procedure RestorePosition;
267 >    procedure SavePosition;
268      procedure DoReOpen(Data: PtrInt);
269      procedure SetupEditor(aEditor: TDBLookupCellEditor; aCol: integer);
270    protected
# Line 266 | Line 274 | end;
274      function  CreateColumns: TGridColumns; override;
275      procedure MouseDown(Button: TMouseButton; Shift:TShiftState; X,Y:Integer); override;
276      procedure LinkActive(Value: Boolean); override;
277 +    procedure MoveSelection; override;
278      procedure Notification(AComponent: TComponent; Operation: TOperation); override;
279      procedure UpdateActive; override;
280    public
# Line 283 | Line 292 | end;
292      property DefaultPositionAtEnd: boolean read  FDefaultPositionAtEnd write FDefaultPositionAtEnd;
293      property IndexFieldNames: string read FIndexFieldNames write SetIndexFieldNames;
294      property OnColumnHeaderClick: TOnColumnHeaderClick read FOnColumnHeaderClick write FOnColumnHeaderClick;
295 +    property OnRestorePosition: TOnRestorePosition read FOnRestorePosition write FOnRestorePosition;
296      property OnUpdateSortOrder: TOnUpdateSortOrder read FOnUpdateSortOrder write FOnUpdateSortOrder;
297   end;
298  
299   implementation
300  
301 < uses Math, IBQuery, IBCustomDataSet, LCLType;
301 > uses Math, IBQuery, LCLType;
302 >
303 > { TIBGridControlLink }
304 >
305 > constructor TIBGridControlLink.Create(AOwner: TIBDynamicGrid);
306 > begin
307 >  inherited Create;
308 >  FOwner := AOwner;
309 > end;
310 >
311 > procedure TIBGridControlLink.UpdateSQL(Sender: TObject);
312 > begin
313 >  FOwner.UpdateSQL(self,TIBParserDataSet(Sender).Parser)
314 > end;
315  
316   { TDBLookupProperties }
317  
# Line 374 | Line 397 | end;
397   procedure TDBDynamicGrid.DoEditorHide;
398   begin
399    inherited DoEditorHide;
400 <  if (FExpandedRow >= 0) and (FExpandedRow < RowCount) then
401 <    RowHeights[FExpandedRow] := DefaultRowHeight;
402 <  FExpandedRow := -1;
403 <  if CanFocus then SetFocus;
404 <  if assigned(FOnEditorPanelHide) then
405 <     OnEditorPanelHide(self);
406 <  DoOnResize;
400 >  if Editor = FEditorPanel then
401 >  begin
402 >    if (FExpandedRow >= 0) and (FExpandedRow < RowCount) then
403 >      RowHeights[FExpandedRow] := DefaultRowHeight;
404 >    FExpandedRow := -1;
405 >    if CanFocus then SetFocus;
406 >    if assigned(FOnEditorPanelHide) then
407 >       OnEditorPanelHide(self);
408 >    DoOnResize;
409 >    ResetSizes;
410 >    Invalidate;
411 >  end;
412   end;
413  
414   procedure TDBDynamicGrid.DoEditorShow;
# Line 639 | Line 667 | end;
667  
668   procedure TDBDynamicGrid.ShowEditorPanel;
669   begin
670 <  if csDesigning in ComponentState then Exit;
670 >  if (csDesigning in ComponentState) or
671 >   (DataSource = nil) or (DataSource.DataSet = nil)
672 >     or ((DataSource.DataSet.RecordCount = 0) and (DataSource.DataSet.State <> dsInsert)) then
673 >     Exit;
674    Editor := FEditorPanel;
675    EditorMode := true;
676   end;
# Line 698 | Line 729 | procedure TDBLookupCellEditor.CloseUp;
729   begin
730    UpdateData(nil); {Force Record Update}
731    if FGrid<>nil then
732 <    (FGrid as TIBDynamicGrid).EditorTextChanged(FCol, FRow, Text);
732 >  Begin
733 >    (FGrid as TIBDynamicGrid).EditorTextChanged(FCol, FRow, Trim(Text));
734 >    (FGrid as TIBDynamicGrid).UpdateData;
735 >  end;
736    inherited CloseUp;
737   end;
738  
# Line 710 | Line 744 | begin
744      inherited KeyDown(Key, Shift);
745   end;
746  
747 + procedure TDBLookupCellEditor.Loaded;
748 + begin
749 +  inherited Loaded;
750 +  Text := '';
751 + end;
752 +
753   procedure TDBLookupCellEditor.msg_GetValue(var Msg: TGridMessage);
754   begin
755    CheckAndInsert;
# Line 830 | Line 870 | begin
870    inherited Destroy;
871   end;
872  
833 – { TDynamicGridDataLink }
834 –
835 – procedure TDynamicGridDataLink.DataEvent(Event: TDataEvent; Info: Ptrint);
836 – begin
837 –  if (Event = deCheckBrowseMode) and (Info = 1) and not DataSet.Active then
838 –  begin
839 –    if (DataSet is TIBDataSet) then
840 –      FOwner.UpdateSQL(self,TIBDataSet(DataSet).Parser)
841 –    else
842 –    if (DataSet is TIBQuery) then
843 –      FOwner.UpdateSQL(self,TIBQuery(DataSet).Parser)
844 –  end
845 –  else
846 –  inherited DataEvent(Event, Info);
847 – end;
848 –
849 – procedure TDynamicGridDataLink.DataSetScrolled(Distance: Integer);
850 – begin
851 –  inherited DataSetScrolled(Distance);
852 –  FOwner.DataSetScrolled(self)
853 – end;
854 –
855 – constructor TDynamicGridDataLink.Create(AOwner: TIBDynamicGrid);
856 – begin
857 –  inherited Create;
858 –  FOwner := AOwner
859 – end;
860 –
873  
874   { TIBDynamicGrid }
875  
# Line 901 | Line 913 | end;
913   procedure TIBDynamicGrid.SetDataSource(AValue: TDataSource);
914   begin
915    inherited DataSource := AValue;
916 <  FDataLink.DataSource := AValue;
916 >  IBControlLinkChanged;
917   end;
918  
919   procedure TIBDynamicGrid.SetEditorBorderStyle(AValue: TBorderStyle);
# Line 940 | Line 952 | procedure TIBDynamicGrid.UpdateSQL(Sende
952   var OrderBy: string;
953      FieldPosition: integer;
954   begin
955 <    if (Sender = TObject(FDataLink)) and assigned(DataSource) and assigned(DataSource.DataSet)
955 >    if assigned(DataSource) and assigned(DataSource.DataSet)
956        and (DataSource.DataSet is TIBCustomDataSet) then
957      begin
958 +      if (FLastColIndex < 0) or (FLastColIndex >= Columns.Count) then Exit;
959        FieldPosition := Parser.GetFieldPosition(Columns[FLastColIndex].FieldName);
960        if FieldPosition = 0 then Exit;
961  
# Line 972 | Line 985 | begin
985  
986   end;
987  
988 < procedure TIBDynamicGrid.DataSetScrolled(Sender: TObject);
976 < var i: integer;
977 <    F: TField;
978 < begin
979 <    SetLength(FBookmark,FIndexFieldsList.Count);
980 <    for i := 0 to FIndexFieldsList.Count - 1 do
981 <    begin
982 <      F := DataSource.DataSet.FindField(FIndexFieldsList[i]);
983 <      if assigned(F) then
984 <         FBookmark[i] := F.AsVariant;
985 <    end;
986 < end;
987 <
988 < procedure TIBDynamicGrid.RestorePosition(Data: PtrInt);
988 > procedure TIBDynamicGrid.RestorePosition;
989   begin
990 –  if AppDestroying in Application.Flags then Exit;
991 –
990    if assigned(DataSource) and assigned(DataSource.DataSet) and DataSource.DataSet.Active then
991    begin
992 +    if assigned(FOnRestorePosition) then
993 +      OnRestorePosition(self,@FBookmark);
994      if (Length(FBookmark) > 0) and
995        DataSource.DataSet.Locate(FIndexFieldNames,FBookmark,[]) then Exit;
996  
# Line 999 | Line 999 | begin
999    end;
1000   end;
1001  
1002 + procedure TIBDynamicGrid.SavePosition;
1003 + var i: integer;
1004 +    F: TField;
1005 + begin
1006 +  if FIndexFieldsList = nil then Exit;
1007 +
1008 +  SetLength(FBookmark,FIndexFieldsList.Count);
1009 +  for i := 0 to FIndexFieldsList.Count - 1 do
1010 +  begin
1011 +    F := DataSource.DataSet.FindField(FIndexFieldsList[i]);
1012 +    if assigned(F) then
1013 +       FBookmark[i] := F.AsVariant;
1014 +  end;
1015 + end;
1016 +
1017   procedure TIBDynamicGrid.DoReOpen(Data: PtrInt);
1018   begin
1019    DataSource.DataSet.Active := true;
1020   end;
1021  
1022 + procedure TIBDynamicGrid.IBControlLinkChanged;
1023 + begin
1024 +  if (DataSource <> nil) and (DataSource.DataSet <> nil) and (DataSource.DataSet is TIBParserDataSet) then
1025 +    FIBControlLink.IBDataSet := TIBCustomDataSet(DataSource.DataSet)
1026 +  else
1027 +    FIBControlLink.IBDataSet := nil;
1028 + end;
1029 +
1030   procedure TIBDynamicGrid.SetupEditor(aEditor: TDBLookupCellEditor; aCol: integer
1031    );
1032   var C: TIBDynamicGridColumn;
1033   begin
1034    C := ColumnFromGridColumn(aCol) as TIBDynamicGridColumn;
1035 <  C.SetupEditor(aEditor);
1035 >  if (c <> nil) then
1036 >    C.SetupEditor(aEditor);
1037   end;
1038  
1039   procedure TIBDynamicGrid.DoEditorHide;
# Line 1054 | Line 1078 | begin
1078    AllowOutboundEvents := false;
1079    try
1080      Coord := MouseCoord(X,Y);
1081 <  if AllowColumnSort and  (Coord.X <> -1) and
1081 >  if AllowColumnSort and  (Coord.X <> -1) and (FixedRows > 0) and
1082     (Coord.Y = 0) and (MouseCoord(X+5,Y).X = Coord.X) {not on boundary}
1083                     and (MouseCoord(X-5,Y).X = Coord.X) then
1084      ColumnHeaderClick(Coord.X-1);
# Line 1063 | Line 1087 | begin
1087    end;
1088   end;
1089  
1090 + procedure TIBDynamicGrid.MoveSelection;
1091 + begin
1092 +  inherited MoveSelection;
1093 +  SavePosition;
1094 + end;
1095 +
1096   procedure TIBDynamicGrid.LinkActive(Value: Boolean);
1097   begin
1098 +  IBControlLinkChanged;
1099    inherited LinkActive(Value);
1100    if (FActive <> Value) and Value then
1101 <    Application.QueueAsyncCall(@RestorePosition,0);
1101 >    RestorePosition;
1102    FActive := Value
1103   end;
1104  
# Line 1076 | Line 1107 | procedure TIBDynamicGrid.Notification(AC
1107   begin
1108    inherited Notification(AComponent, Operation);
1109    if (Operation = opRemove) and
1110 <     (FDataLink <> nil) and (AComponent = DataSource) then DataSource := nil;
1110 >     (FIBControlLink <> nil) and (AComponent = DataSource) then FIBControlLink.IBDataSet := nil;
1111   end;
1112  
1113   procedure TIBDynamicGrid.UpdateActive;
1114   begin
1115    inherited UpdateActive;
1116 <  if assigned(FDataLink) and assigned(FDataLink.DataSet) and
1117 <     FDataLink.DataSet.Active and (FDataLink.DataSet.State = dsInsert) then
1118 <    DataSetScrolled(nil);
1116 >  if assigned(DataLink) and assigned(DataLink.DataSet) and
1117 >     DataLink.DataSet.Active and (DataLink.DataSet.State = dsInsert) then
1118 >   SavePosition;
1119   end;
1120  
1121   constructor TIBDynamicGrid.Create(TheComponent: TComponent);
1122   begin
1123    inherited Create(TheComponent);
1124    FAllowColumnSort := true;
1125 <  FDataLink := TDynamicGridDataLink.Create(self);
1125 >  FIBControlLink := TIBGridControlLink.Create(self);
1126    FIndexFieldsList := TStringList.Create;
1127    FIndexFieldsList.Delimiter := ';';
1128    FIndexFieldsList.StrictDelimiter := true;
# Line 1103 | Line 1134 | end;
1134  
1135   destructor TIBDynamicGrid.Destroy;
1136   begin
1137 <  if assigned(FDataLink) then FDataLink.Free;
1137 >  if assigned(FIBControlLink) then FIBControlLink.Free;
1138    if assigned(FIndexFieldsList) then FIndexFieldsList.Free;
1139    if assigned(FDBLookupCellEditor) then FDBLookupCellEditor.Free;
1140    inherited Destroy;

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