function TTdiag(varargin)

orig_gcbh = gcbh;


Action = varargin{1};



switch Action,
    case 'Open',
        Mode = varargin{2};

        if 1 ~= nargin
            DAStudio.warning('improper function use')
        end
        blockHandleTTTopMask = orig_gcbh;
        switch Mode,
            
            case 'Simulink'
                 LocalOpenBlockFcn(blockHandleTTTopMask,1);
            case 'Matlab'
                 LocalOpenBlockFcn([],0);
        end
        
    case 'Close',
        blockHandleTTTopMask = orig_gcbh;
        LocalCloseBlockFcn(blockHandleTTTopMask);

    case 'Copy',
        blockHandleTTTopMask = orig_gcbh;
        LocalCopyBlockFcn(blockHandleTTTopMask);
        DAStudio.ModelExplorer
        
    otherwise,
        DAStudio.error('Simulink:dialog:UnknownAction',Action);
    
end
    
end

function LocalCopyBlockFcn(blockHandleTTTopMask)
    data = get(blockHandleTTTopMask,'UserData');
    if(~isempty(data))
        data_new = data.clone(blockHandleTTTopMask);  
  
        set_param(blockHandleTTTopMask,'UserData',data_new)
    end
end

function LocalOpenBlockFcn(blockHandleTTTopMask,mode)
    data = [];
    if (mode == 1)
            modelHandle = bdroot(blockHandleTTTopMask);


        % check if the user is trying to open the block from the library
        if strcmp(get_param(modelHandle,'Lock'), 'on') || ...
         strcmp(get_param(blockHandleTTTopMask,'LinkStatus'),'implicit')

          errordlg(...
              DAStudio.message('can not open Model Locked, Add to new model to use'),...
              'Error', 'modal')
            return
        end



        data = get_param(blockHandleTTTopMask,'UserData');
    end
    
    if isempty(data)
        data = Data();
        data.init();

    else
        if ~data.valid
             errordlg(...
          DAStudio.message('Block Data has been corputed'),...
          'Error', 'modal')
            return
        end
        if data.open
            if ishghandle(data.fig)
             figure(data.fig)

            end
            return
        end
        
    end
    if mode == 1
        gui = GUI(blockHandleTTTopMask,1);   
    elseif mode == 0
        gui = GUI([],0);
    end

    gui.setData(data)
    gui.init();
        if(mode == 1)
            set_param(blockHandleTTTopMask,'UserData',data); 
            set_param(blockHandleTTTopMask, 'UserDataPersistent', 'on');
        end
    
end

function LocalCloseRequestBlockFcn(blockHandleTTTopMask)

    modelHandle = bdroot(blockHandleTTTopMask);

    data = get_param(blockHandleTTTopMask,'UserData');



if ~isempty(data)
    if data.open
        delete(data.fig)
    end
end
        %set_param(gui.fig,'Visible','off')

end