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{
This file is part of the Free Component Library (FCL)
Copyright (c) 1999-2000 by the Free Pascal development team
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.
**********************************************************************}
{ Class registration routines }
procedure RegisterClass(AClass: TPersistentClass);
var
aClassname : String;
begin
//Classlist is created during initialization.
with Classlist.Locklist do
try
while Indexof(AClass) = -1 do
begin
aClassname := AClass.ClassName;
if GetClass(aClassName) <> nil then //class alread registered!
Begin
//raise an error
exit;
end;
Add(AClass);
if AClass = TPersistent then break;
AClass := TPersistentClass(AClass.ClassParent);
end;
finally
ClassList.UnlockList;
end;
end;
procedure RegisterClassAlias(AClass: TPersistentClass; const Alias: string);
var
I : integer;
begin
i := ClassAliasList.IndexOf(Alias);
if I = -1 then
ClassAliasList.AddObject( Alias, TObject(AClass) );
end;
procedure RegisterClasses(AClasses: array of TPersistentClass);
var
I : Integer;
begin
for I := low(aClasses) to high(aClasses) do
RegisterClass(aClasses[I]);
end;
procedure UnRegisterClass(AClass: TPersistentClass);
begin
end;
procedure UnRegisterClasses(AClasses: array of TPersistentClass);
begin
end;
procedure UnRegisterModuleClasses(Module: HMODULE);
begin
end;
function FindClass(const AClassName: string): TPersistentClass;
begin
Result := GetClass(AClassName);
if not Assigned(Result) then
raise EClassNotFound.CreateFmt(SClassNotFound, [AClassName]);
end;
function GetClass(const AClassName: string): TPersistentClass;
var
I : Integer;
begin
with ClassList.LockList do
try
for I := 0 to Count-1 do
begin
Result := TPersistentClass(Items[I]);
if Result.ClassNameIs(AClassName) then Exit;
end;
I := ClassAliasList.Indexof(AClassName);
if I >= 0 then //found
Begin
Result := TPersistentClass(ClassAliasList.Objects[i]);
exit;
end;
Result := nil;
finally
ClassList.Unlocklist;
end;
end;
procedure StartClassGroup(AClass: TPersistentClass);
begin
end;
procedure GroupDescendentsWith(AClass, AClassGroup: TPersistentClass);
begin
end;
function ActivateClassGroup(AClass: TPersistentClass): TPersistentClass;
begin
Result:=nil;
end;
function ClassGroupOf(AClass: TPersistentClass): TPersistentClass;
begin
Result:=nil;
end;
function ClassGroupOf(Instance: TPersistent): TPersistentClass;
begin
Result:=nil;
end;
{ Component registration routines }
type
TComponentPage = class(TCollectionItem)
public
Name: String;
Classes: TList;
destructor Destroy; override;
end;
{ TComponentPage }
destructor TComponentPage.Destroy;
begin
Classes.Free;
inherited Destroy;
end;
var
ComponentPages: TCollection;
procedure InitComponentPages;
begin
ComponentPages := TCollection.Create(TComponentPage);
{ Add a empty page which will be used for storing the NoIcon components }
ComponentPages.Add;
end;
procedure RegisterComponents(const Page: string;
ComponentClasses: array of TComponentClass);
var
i: Integer;
pg: TComponentPage;
begin
if Page = '' then exit; { prevent caller from doing nonsense }
pg := nil;
if not Assigned(ComponentPages) then
InitComponentPages
else
for i := 0 to ComponentPages.Count - 1 do
if TComponentPage(ComponentPages.Items[i]).Name = Page then begin
pg := TComponentPage(ComponentPages.Items[i]);
break;
end;
if pg = nil then begin
pg := TComponentPage(ComponentPages.Add);
pg.Name := Page;
end;
if pg.Classes = nil then
pg.Classes := TList.Create;
for i := Low(ComponentClasses) to High(ComponentClasses) do
pg.Classes.Add(ComponentClasses[i]);
if Assigned(RegisterComponentsProc) then
RegisterComponentsProc(Page, ComponentClasses);
end;
procedure RegisterNoIcon(ComponentClasses: array of TComponentClass);
var
pg: TComponentPage;
i: Integer;
begin
if not Assigned(ComponentPages) then
InitComponentPages;
pg := TComponentPage(ComponentPages.Items[0]);
if pg.Classes = nil then
pg.Classes := TList.Create;
for i := Low(ComponentClasses) to High(ComponentClasses) do
pg.Classes.Add(ComponentClasses[i]);
if Assigned(RegisterNoIconProc) then
RegisterNoIconProc(ComponentClasses);
end;
procedure RegisterNonActiveX(ComponentClasses: array of TComponentClass;
AxRegType: TActiveXRegType);
begin
end;
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