DesignerMediator in any unit

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x2nie:
I am developing a new WYSIWYG editor for components that are not inherited from TWinControl nor TControl.
It is fine (can resize, move, change property via Object Inspector and also drop a new component from Components Palette),
until I found that is not all Lazarus's feature worked properly for non-LCL componets.
For example: the Paste command always places copied component at root ( its should placed inside the current selected component)
, and drag-drop within Component Tree also disallowed.

AFAIK, the problem is because my component-editor rely only at TDesignerMediator, but TDesignerMediator was not involved on every Lazarus activities.

What I want is let TDesignerMediator decide what should going right when Lazarus is editing a non-LCL components.
For example, there is no chance to involve TDesignerMediator in \lazarus_trunk\components\identf\componenttreeview.pas line:403 :

--- Code: Pascal [+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i < x.length; i++) { x[i].style.maxHeight='none'; x[i].style.height = Math.min(x[i].clientHeight+15,306)+'px'; x[i].style.resize = "vertical";}};} ---procedure TComponentTreeView.DragOver(Source: TObject; X, Y: Integer; State: TDragState; var Accept: Boolean);var...begin AcceptContainer := False; AcceptControl := True;.. if Assigned(ParentNode) and Assigned(ParentNode.Data) then begin AnObject := TObject(ParentNode.Data); if (AnObject is TWinControl) then begin if ControlAcceptsStreamableChildComponent(TWinControl(AControl), TComponentClass(AnObject.ClassType),aLookupRoot) then begin AContainer := TPersistent(AnObject); //DebugLn(['TComponentTreeView.DragOver AContainer=',DbgSName(AContainer)]); AcceptContainer := True; end; end else if (AnObject is TCollection) then begin // it is allowed to move container items inside the container AContainer := TPersistent(AnObject); AcceptContainer := True; end; end; if AcceptContainer then begin Node := GetFirstMultiSelected; while Assigned(Node) and AcceptControl do begin AnObject := TObject(Node.Data); // don't allow to move ancestor components if (AnObject is TComponent) and (csAncestor in TComponent(AnObject).ComponentState) then break; if (AnObject is TControl) then begin if AnObject = AContainer then break; if not (AContainer is TWinControl) then break; // check if new parent allows this control class if not TWinControl(AContainer).CheckChildClassAllowed(AnObject.ClassType, False) then break; // check if one of the parent of the container is the control itself if AControl.IsParentOf(TWinControl(AContainer)) then break; // do not move children of a restricted parent to another parent // e.g. TPage of TPageControl if (AControl.Parent <> nil) and (AControl.Parent <> AContainer) and (not (csAcceptsControls in AControl.Parent.ControlStyle)) then break; end else if (AnObject is TCollectionItem) then begin if AnObject = AContainer then break; if not (AContainer is TCollection) then break; if TCollectionItem(AnObject).Collection <> TCollection(AContainer) then break; end; Node := Node.GetNextMultiSelected; end; AcceptControl := (Node = nil); end; Accept := AcceptContainer and AcceptControl; inherited DragOver(Source, X, Y, State, Accept); Accept := AcceptContainer and AcceptControl and ((OnDragOver=nil) or Accept);end;

See? there is no chance for non-TControl to decide what should go right.
There are many other sample that is similar situation in several different folder (\ide, \components\identf, \designer, )

So, my question is : How to involve/call/access the DesignerMediator "at any unit" (I mean there are different folders)? .

I guess it will start with current selected component, but really have no idea. Thanks You

ozznixon:
How is your editor component coming?

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