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

Comparing ibx/trunk/ibcontrols/IBLookupComboEditBox.pas (file contents):
Revision 225 by tony, Tue Apr 3 09:09:05 2018 UTC vs.
Revision 278 by tony, Mon Feb 4 13:47:40 2019 UTC

#	Line 30 | Line 30 | unit IBLookupComboEditBox;
30		interface
31
32		uses
33	<	Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, DbCtrls,
34	<	ExtCtrls, IBSQLParser, DB, StdCtrls, IBCustomDataSet;
33	>	Classes, SysUtils, LCLType, LResources, Forms, Controls, Graphics, Dialogs, DbCtrls,
34	>	ExtCtrls, IBSQLParser, DB, StdCtrls, IBCustomDataSet, LCLVersion;
35
36		type
37
#	Line 54 | Line 54 | type
54		FOwner: TIBLookupComboEditBox;
55		protected
56		procedure ActiveChanged; override;
57	+	{$if lcl_fullversion < 2000000}
58		procedure DataEvent(Event: TDataEvent; Info: Ptrint); override;
59	+	{$endif}
60		procedure RecordChanged(Field: TField); override;
61		procedure UpdateData; override;
62		public
#	Line 117 | Line 119 | type
119		procedure CheckAndInsert;
120		procedure DoEnter; override;
121		procedure DoExit; override;
122	+	{$if lcl_fullversion >= 2000002}
123	+	{Deferred update changes in Lazarus 2.0 stop the combo box working when
124	+	the datasource is nil. We thus have to reverse out the changes :(}
125	+	function DoEdit: boolean; override;
126	+	procedure Change; override;
127	+	procedure CloseUp; override;
128	+	procedure Select; override;
129	+	{$ifend}
130	+	{$if lcl_fullversion = 2000002}
131	+	procedure UTF8KeyPress(var UTF8Key: TUTF8Char); override;
132	+	{$ifend}
133		procedure KeyUp(var Key: Word; Shift: TShiftState); override;
134		procedure Loaded; override;
135		procedure Notification(AComponent: TComponent; Operation: TOperation); override;
136		procedure SetItemIndex(const Val: integer); override;
124	–	function SQLSafe(aText: string): string;
137		procedure UpdateShowing; override;
138		procedure UpdateData(Sender: TObject); override;
139		public
#	Line 147 | Line 159 | type
159
160		implementation
161
162	<	uses LCLType, Variants, LCLProc, LazUTF8;
162	>	uses Variants, LCLProc, LazUTF8, IBUtils;
163
164		{ TIBLookupControlLink }
165
#	Line 169 | Line 181 | begin
181		FOwner.ActiveChanged(self)
182		end;
183
184	+	{$if lcl_fullversion < 2000000}
185		procedure TIBLookupComboDataLink.DataEvent(Event: TDataEvent; Info: Ptrint);
186		begin
187		inherited DataEvent(Event, Info);
188		if Event = deLayoutChange then
189		FOwner.LookupCache := FOwner.LookupCache; {sneaky way of calling UpdateLookup}
190		end;
191	+	{$endif}
192
193		procedure TIBLookupComboDataLink.RecordChanged(Field: TField);
194		begin
#	Line 384 | Line 398 | begin
398		FilterText := Text;
399		if cbactSearchCaseSensitive in AutoCompleteText then
400		Parser.Add2WhereClause(GetRelationNameQualifier + '"' + ListField + '" Like ''' +
401	<	SQLSafe(FilterText) + '%''')
401	>	SQLSafeString(FilterText) + '%''')
402		else
403		Parser.Add2WhereClause('Upper(' + GetRelationNameQualifier + '"' +  ListField + '") Like Upper(''' +
404	<	SQLSafe(FilterText) + '%'')');
404	>	SQLSafeString(FilterText) + '%'')');
405
406		if cbactSearchAscending in AutoCompleteText then
407		begin
#	Line 501 | Line 515 | end;
515		procedure TIBLookupComboEditBox.KeyUp(var Key: Word; Shift: TShiftState);
516		begin
517		inherited KeyUp(Key, Shift);
504	–	if Key = VK_RETURN then
505	–	EditingDone
506	–	else
518		if Key = VK_ESCAPE then
519		begin
520		SelStart := UTF8Length(Text);      {Ensure end of line selection}
#	Line 555 | Line 566 | begin
566		FLastKeyValue := KeyValue;
567		end;
568
558	–	function TIBLookupComboEditBox.SQLSafe(aText: string): string;
559	–	var I: integer;
560	–	begin
561	–	Result := '';
562	–	for I := 1 to length(aText) do
563	–	if aText[I] = '''' then
564	–	Result := Result + ''''''
565	–	else
566	–	Result := Result + aText[I];
567	–	end;
568	–
569		procedure TIBLookupComboEditBox.UpdateShowing;
570		begin
571		inherited UpdateShowing;
#	Line 581 | Line 581 | begin
581		FModified := false;
582		end;
583
584	+
585	+	{Workarounds due to bugs in various Lazarus 2.0 release candidates}
586	+	{$if lcl_fullversion >= 2000002}
587	+	type
588	+
589	+	{ THackedCustomComboBox }
590	+
591	+	THackedCustomComboBox = class(TCustomComboBox)
592	+	private
593	+	procedure CallChange;
594	+	procedure CallUTF8KeyPress(var UTF8Key: TUTF8Char);
595	+	end;
596	+
597	+	{ THackedCustomComboBox }
598	+
599	+	procedure THackedCustomComboBox.CallChange;
600	+	begin
601	+	inherited Change;
602	+	end;
603	+
604	+	procedure THackedCustomComboBox.CallUTF8KeyPress(var UTF8Key: TUTF8Char);
605	+	begin
606	+	inherited UTF8KeyPress(UTF8Key);
607	+	end;
608	+
609	+	procedure TIBLookupComboEditBox.Change;
610	+	begin
611	+	if DataSource = nil then
612	+	THackedCustomComboBox(self).CallChange
613	+	else
614	+	inherited Change;
615	+	end;
616	+
617	+	procedure TIBLookupComboEditBox.CloseUp;
618	+	begin
619	+	inherited DoEdit;
620	+	inherited CloseUp;
621	+	EditingDone;
622	+	end;
623	+
624	+	procedure TIBLookupComboEditBox.Select;
625	+	begin
626	+	inherited Select;
627	+	if DataSource = nil then
628	+	inherited DoEdit;
629	+	end;
630	+
631	+	function TIBLookupComboEditBox.DoEdit: boolean;
632	+	begin
633	+	{DoEdit will swallow characters if no editable Field. Hence, to enabled
634	+	writing we must avoid calling the inherited method.}
635	+	if DataSource = nil then
636	+	Result := true
637	+	else
638	+	Result := inherited DoEdit;
639	+	end;
640	+	{$ifend}
641	+
642	+	{$if lcl_fullversion = 2000002}
643	+	procedure TIBLookupComboEditBox.UTF8KeyPress(var UTF8Key: TUTF8Char);
644	+	begin
645	+	if DataSource = nil then
646	+	THackedCustomComboBox(self).CallUTF8KeyPress(UTF8Key)
647	+	else
648	+	inherited;
649	+	end;
650	+	{$ifend}
651	+
652	+
653		constructor TIBLookupComboEditBox.Create(TheComponent: TComponent);
654		begin
655		inherited Create(TheComponent);

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