add new components TRxRadioGroup and TRxDBRadioGroup - allow disable any of RadioButton from group

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@1993 8e941d3f-bd1b-0410-a28a-d453659cc2b4

components/rx/docs/WhatsNew.rus.txt

@@ -66,11 +66,12 @@
     добавлено новое свойство KeyStrokes
   + Добавлен новый компонент RxCurredit
   + Добавлен новый компонент- TRxViewsPanel 
-  
   + у компоненты TRxMemoryData убрана зависимость от модуля Forms
   + Улучшено отображение редактора полей типа TDateTime/TDate в RxDBGrid
   + У TRxCollumn компоненты TRxDBGrid для стиля cbsPickList добавлено свойство DirectInput. 
     Если оно установлено в false - значения поля можно выбрать только из выпадающего списка
+  + Добавлены 2 комопненты - TRxRadioGroup и TRxDBRadioGroup. В отличии от стнадартных позваляют выборочно запрещать некоторые RadioButton-ы на 
+    компоненте через свойство ItemEnabled.
 22.05.2008 - версия 2.0.0.136 (svn revision 100)
   + У объекта TRxCustomDBLookupCombo введён контроль на CircularDataLink
   + У объекта TRxCustomDBLookupCombo ускорена отрисовка данных

components/rx/registerrx.pas

@@ -42,8 +42,8 @@ procedure Register;
 
 implementation
 uses
-  PropEdits, dbdateedit, dbcurredit, rxlookup, folderlister, duallist,
+  PropEdits, folderlister, duallist,
-  curredit, rxswitch, rxdice, rxdbcomb, rxtoolbar, rxxpman, PageMngr, RxAppIcon,
+  curredit, rxswitch, rxdice, rxtoolbar, rxxpman, PageMngr, RxAppIcon,
   Dialogs, ComponentEditors, DBPropEdits, DB, rxctrls,
   RxCustomChartPanel, AutoPanel, pickdate, rxconst, tooledit, rxclock,
   rxceEditLookupFields, rxpopupunit, rxspin, RxTimeEdit,
@@ -92,20 +92,6 @@ begin
   RegisterComponents('RX',[TPageManager]);
 end;
 
-procedure RegisterUnitDBDateEdit;
-begin
-  RegisterComponents('RX DBAware',[TDBDateEdit, TRxDBCalcEdit, TRxDBCurrEdit]);
-end;
-
-procedure RegisterRXLookup;
-begin
-  RegisterComponents('RX DBAware',[TRXLookupEdit, TRxDBLookupCombo]);
-end;
-
-procedure RegisterRxDBComb;
-begin
-  RegisterComponents('RX DBAware',[TRxDBComboBox]);
-end;
 
 procedure RegisterDualList;
 begin
@@ -139,7 +125,7 @@ end;
 
 procedure RegisterRxCtrls;
 begin
-  RegisterComponents('RX',[TRxLabel, TSecretPanel, TRxSpeedButton]);
+  RegisterComponents('RX',[TRxLabel, TSecretPanel, TRxSpeedButton, TRxRadioGroup]);
 end;
 
 
@@ -215,13 +201,7 @@ begin
   RegisterUnit('RxAboutDialog', @RegisterRxAboutDialog);
   RegisterUnit('RxViewsPanel', @RegisterRxViewsPanel);
 
-  //RX DBAware
+//
-  RegisterUnit('dbdateedit', @RegisterUnitDBDateEdit);
-  RegisterUnit('rxlookup', @RegisterRXLookup);
-  RegisterUnit('rxdbcomb', @RegisterRxDBComb);
-
-  //
-
   RegisterPropertyEditor(TypeInfo(string), TPopUpColumn, 'FieldName', TPopUpColumnFieldProperty);
   RegisterCEEditLookupFields;
 end;

components/rx/registerrxdb.pas

@@ -41,7 +41,8 @@ uses
 procedure Register;
 implementation
 uses DB, DBPropEdits, rxdbgrid, RxDBSpinEdit, RxDBTimeEdit, RxDBCtrls, rxmemds,
-  ComponentEditors, seldsfrm, PropEdits, RxDBColorBox;
+  ComponentEditors, seldsfrm, PropEdits, RxDBColorBox, dbdateedit, rxdbcomb,
+  rxlookup, dbcurredit;
 
 type
 
@@ -104,7 +105,7 @@ end;
 
 procedure RegisterRxDBCtrls;
 begin
-  RegisterComponents('RX DBAware',[TRxDBProgressBar, TRxDBTrackBar]);
+  RegisterComponents('RX DBAware',[TRxDBProgressBar, TRxDBTrackBar, TRxDBRadioGroup]);
 end;
 
 procedure RegisterRxDbGrid;
@@ -122,8 +123,28 @@ begin
   RegisterComponents('RX DBAware',[TRxDBColorBox]);
 end;
 
+procedure RegisterUnitDBDateEdit;
+begin
+  RegisterComponents('RX DBAware',[TDBDateEdit, TRxDBCalcEdit, TRxDBCurrEdit]);
+end;
+
+procedure RegisterRXLookup;
+begin
+  RegisterComponents('RX DBAware',[TRXLookupEdit, TRxDBLookupCombo]);
+end;
+
+procedure RegisterRxDBComb;
+begin
+  RegisterComponents('RX DBAware',[TRxDBComboBox]);
+end;
+
 procedure Register;
 begin
+  //RX DBAware
+  RegisterUnit('dbdateedit', @RegisterUnitDBDateEdit);
+  RegisterUnit('rxlookup', @RegisterRXLookup);
+  RegisterUnit('rxdbcomb', @RegisterRxDBComb);
+
   RegisterUnit('RxDBTimeEdit', @RegisterRxDBTimeEdit);
   RegisterUnit('RxDBSpinEdit', @RegisterRxDBSpinEdit);
   RegisterUnit('RxDBCtrls', @RegisterRxDBCtrls);

components/rx/rxctrls.pas

@@ -797,14 +797,26 @@ function DrawShadowText(DC: HDC; Str: PChar; Count: Integer; var Rect: TRect;
 
 function CheckBitmap: TBitmap;
 *)
+
+type
+
+  { TRxDBRadioGroup }
+
+  { TRxRadioGroup }
+
+  TRxRadioGroup = class(TRadioGroup)
+   private
+    function GetItemEnabled(Index: integer): boolean;
+    procedure SetItemEnabled(Index: integer; AValue: boolean);
+  public
+    property ItemEnabled[Index: integer]: boolean read GetItemEnabled write SetItemEnabled;
+  end;
+
 implementation
 
 
-uses SysUtils, Dialogs, {CommCtrl,} VCLUtils, Math, RxAppUtils, ImgList,
+uses SysUtils, Dialogs, VCLUtils, Math, RxAppUtils, ImgList,
- ActnList, InterfaceBase
+ ActnList, InterfaceBase;
-(*  Consts, {$IFDEF RX_D6}, RTLConsts{$ENDIF}
-*)
-  ;
 const
   Alignments: array [TAlignment] of Word = (DT_LEFT, DT_RIGHT, DT_CENTER);
   WordWraps: array[Boolean] of Word = (0, DT_WORDBREAK);
@@ -2541,6 +2553,32 @@ begin
   UnionRect(Rect, RText, RShadow);
 end;
 
+{ TRxRadioGroup }
+
+function TRxRadioGroup.GetItemEnabled(Index: integer): boolean;
+var
+  R:TRadioButton;
+begin
+  if (Index < -1) or (Index >= Items.Count) then
+    RaiseIndexOutOfBounds(Self, Items, Index);
+  R:=FindComponent('RadioButton'+IntToStr(Index)) as TRadioButton;
+  if Assigned(R) then
+    Result:=R.Enabled
+  else
+    Result:=False;
+end;
+
+procedure TRxRadioGroup.SetItemEnabled(Index: integer; AValue: boolean);
+var
+  R:TRadioButton;
+begin
+  if (Index < -1) or (Index >= Items.Count) then
+    RaiseIndexOutOfBounds(Self, Items, Index);
+  R:=FindComponent('RadioButton'+IntToStr(Index)) as TRadioButton;
+  if Assigned(R) then
+    R.Enabled:=AValue;
+end;
+
 constructor TRxCustomLabel.Create(AOwner: TComponent);
 begin
   inherited Create(AOwner);

components/rx/rxdbctrls.pas

@@ -194,8 +194,46 @@ type
     property Visible;
   end;
 
+type
+
+  { TRxDBRadioGroup }
+
+  TRxDBRadioGroup = class(TDBRadioGroup)
+  private
+    function GetItemEnabled(Index: integer): boolean;
+    procedure SetItemEnabled(Index: integer; AValue: boolean);
+  public
+    property ItemEnabled[Index: integer]: boolean read GetItemEnabled write SetItemEnabled;
+  end;
+
 implementation
-uses dbutils, LCLVersion;
+uses dbutils, LCLVersion, vclutils, StdCtrls;
+
+{ TRxDBRadioGroup }
+
+function TRxDBRadioGroup.GetItemEnabled(Index: integer): boolean;
+var
+  R:TRadioButton;
+begin
+  if (Index < -1) or (Index >= Items.Count) then
+    RaiseIndexOutOfBounds(Self, Items, Index);
+  R:=FindComponent('RadioButton'+IntToStr(Index)) as TRadioButton;
+  if Assigned(R) then
+    Result:=R.Enabled
+  else
+    Result:=False;
+end;
+
+procedure TRxDBRadioGroup.SetItemEnabled(Index: integer; AValue: boolean);
+var
+  R:TRadioButton;
+begin
+  if (Index < -1) or (Index >= Items.Count) then
+    RaiseIndexOutOfBounds(Self, Items, Index);
+  R:=FindComponent('RadioButton'+IntToStr(Index)) as TRadioButton;
+  if Assigned(R) then
+    R.Enabled:=AValue;
+end;
 
 { TCustomRxDBProgressBar }
 

components/rx/vclutils.pas

@@ -74,6 +74,8 @@ function ReallocMemo(fpBlock: Pointer; Size: Longint): Pointer;
 procedure FreeMemo(var fpBlock: Pointer);
 }
 
+procedure RaiseIndexOutOfBounds(Control: TControl; Items:TStrings; Index: integer);
+
 {$IFDEF WIN32}
 type
   PCursorOrIcon = ^TCursorOrIcon;
@@ -100,7 +102,7 @@ procedure OutOfResources;
 {$ENDIF}
 
 implementation
-uses LCLProc, LCLIntf, LCLType;
+uses LCLProc, LCLIntf, LCLType, LCLStrConsts;
 
 function WidthOf(R: TRect): Integer;
 begin
@@ -650,6 +652,12 @@ begin
   Canvas.Free;
 end;
 
+procedure RaiseIndexOutOfBounds(Control: TControl; Items:TStrings; Index: integer);
+begin
+  raise Exception.CreateFmt(rsIndexOutOfBounds,
+                            [Control.Name, Index, Items.Count - 1]);
+end;
+
 initialization
   LazarusResources.Add('rxbtn_downarrow','XPM',[
   '/* XPM */'#13#10'static char * btn_downarrow_xpm[] = {'#13#10'"5 3 2 1",'#13