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{
This file is part of the Free Component Library.
Copyright (c) 2017 Michael Van Canneyt, member of the Free Pascal development team
Base classes to manage a collection of report data loops.
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
unit fpreportdesignreportdata;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, db, forms, fpjson, fpreport, fpreportData;
Type
EDesignReportData = Class(EReportDataError);
{ TDesignReportDataHandler }
{ TReportDataConfigFrame }
TReportDataConfigFrame = Class(TFrame)
Public
Procedure GetConfig(aConfig : TJSONObject); virtual; abstract;
Procedure SetConfig(aConfig : TJSONObject); virtual; abstract;
Function SaveNotOKMessage : String; virtual;
end;
{ TDesignReportDataManager }
TDesignReportDataManager = class(TFPCustomReportDataManager)
private
Public
class function HasDesignTypeHandler(aTypeName: String) : Boolean;
class function CreateConfigFrame(aTypeName: String; AOwner: TComponent): TReportDataConfigFrame;
Property DataDefinitions;
end;
implementation
Resourcestring
SErrNotDesignData = 'The handler for data type %s is registered, but cannot handle visual configuration';
{ TReportDataConfigFrame }
function TReportDataConfigFrame.SaveNotOKMessage: String;
begin
Result:='';
end;
{ TDesignReportDataCollection }
class function TDesignReportDataManager.HasDesignTypeHandler(aTypeName: String): Boolean;
Var
C: TComponentClass;
begin
C:=GetConfigFrameClass(aTypeName);
Result:=C.InheritsFrom(TReportDataConfigFrame);
end;
Class function TDesignReportDataManager.CreateConfigFrame(aTypeName : String; AOwner: TComponent): TReportDataConfigFrame;
Var
C: TComponentClass;
begin
C:=GetConfigFrameClass(aTypeName);
if not C.InheritsFrom(TReportDataConfigFrame) then
Raise EDesignReportData.CreateFmt(SErrNotDesignData,[aTypeName]);
Result:=TReportDataConfigFrame(C.Create(aOwner));
end;
end.
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