Make a test on UI CONTROL , style popupmenu

Hi everybody, i'm new on Mathswork and i have one question :

I'm making a GUI interface with lot of popupmenu (50)

i would like to make in a Button a test about these :

1 : Check the (each one) Popumenu with "ENABLE" "ON".

2: if they're ON , do a second test.

3: i would like to check if they got "blank string" i mean : a string like this < '' > just a blank without space.

4: if there is a blank : say "ERROR, select something in the popupmenu "

My popupmenu got similar name like this : Modele_1 to 10 , Type_1 to 10 etc... i got 5 name and 10 number per name. ( 5 * 10 = 50 )

I ask someone before, and they said to create a boucle FOR but i don't know how to create it. And i don't know how to make the test clearly.

i show the beginning of my code :

    function Continuer_Callback(~, ~, handles)
        i=1;
        for i=1:10
            ?????
            H = findobj('Style','popupmenu','Enable','on');
            if H = ??
                G = findobj('Style','popupmenu','String','');
                if (isempty(G))
                    disp('Problème: case blanche');
                    set(handles.Continuer,'Enable','off')
                end
            end
        end

Thank you ,and help me ....

(sorry for my English if i make some mistake)

Answer 1

[Jan]

It is not clear where the names "Modele_10", "Type_1" etc appear and what "I got 5 names and 10 numbers per name" mean. But let me guess:

function Continuer_Callback(~, ~, handles)
nameList = {'Modele', 'Type', 'Name', 'Flame', 'Shame'};
for iIndex = 1:10
  for iName = 1:5
    Field  = sprintf('%s_%d', nameList{iName});
    H      = handles.(Field);   % Handle of the popupmenu
    String = get(H, 'String');
    Value  = get(H, 'Value');
    EmptyStringSelected = cellfun('isempty', String(Value == 1));
    if any(EmptyStringSelected)
      fprintf(2, 'Problem: Empty string in: %s\n', Field);
      set(handles.Continuer, 'Enable', 'off');
    end
  end
end

I guessed, that you mean if a selected string in empty, and not if this is set to 'Enabled'='on'.

[Jan]

Moved from Answer to Comment: Hugo wrote:

"Modele" and "Type" are TAG for my popup, i mean : i got some series like it : Type_1 , Type_2 ... ect ... to Type_10

5 times like it, with some different name

Type_X

typeX

Modele_X

ModeleX

Essieu_X

Where X are the number : 1 to 10

I will Try your code , thank you !

[Hugo]

I got an error :

Reference to non-existent field 'Modele__'.

Error in Modele1>Continuer_Callback (line 129)
    H  = handles.(Field);   % Handle of the popupmenu

Error in gui_mainfcn (line 96)
        feval(varargin{:});

Error in Modele1 (line 43)
    gui_mainfcn(gui_State, varargin{:});

Error in @(hObject,eventdata)Modele1('Continuer_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

The TAG of my popups are :

Type_X

typeX

Modele_X

ModeleX

Essieu_X

Where X are the number : 1 to 10

I would like to check if the Popupmenu is ON , cause sometime i got some OFF, the test about STRING is making in the off too no ?

Thank you !

[Jan]

I do not understand this sentence:

 I would like to check if the Popupmenu is ON , cause sometime i got some OFF, the test about STRING is making in the off too no ?

I cannot guess the reason of the error message without seeing your code. My code snippet does not produce the string 'Modele__'.

[Joseph Cheng]

Taking what Jan Simon wrote and my understanding of the problem, here is a uicontrol method to do what you're trying. Very Simplified you'll have to modify it for your stuff especially if you're using GUIDE.

function main()
%my stuff to generate some popup boxes
    YPos_offset=-65; %offset in y
    fig_hand = figure; %figure handles
    %loop to generate popups.
    for i=1:5
        Type(i)=uicontrol('Style', 'popup',...
               'String', '|1|2|3|4|5',...
               'Position', [20 340+(i-1)*YPos_offset 100 50],'tag',['TYPE' num2str(i)]);   
    end
    %setting some to enable off;
    set(Type(1),'Enable','off');
    set(Type(3),'Enable','off');

      %disp(Type) %my debuging 

      %generate pushbutton.
      Pbutton=uicontrol('Style', 'pushbutton',...
         'String', 'check',...
         'Position', [220 340 100 20],...
         'Callback', {@check, fig_hand});   

end

function check(~,~,fig_hand)
TYPE=findobj(fig_hand,'Style','popup') %this is just to see if the popup numbers match what i have above for Type.
popup_tag = get(TYPE,'tag'); %get the tags
popup_enabled = get(TYPE,'Enable'); %get enabled
popup_stuff = get(TYPE,'String'); %get whats inside the pop up boxes
popup_select = get(TYPE,'Value'); %get which item was selected

for ind = 1:length(TYPE)
    if strcmp(popup_enabled{ind},'on'); %check which popups are enabled
        if strcmp(popup_stuff{ind}(popup_select{ind}),' ') %check if empty
           fprintf(2, 'Problem: Empty string in: %s\n', popup_tag{ind});

          else
              fprintf(1,'Good: Valid string in: %s is %s\n', popup_tag{ind}, popup_stuff{ind}(popup_select{ind})); 
          end
      else
          fprintf(1,'Enable Off for Popup: %s\n', popup_tag{ind});
      end
  end
  end

[Hugo]

I try to explain again :

i got lot of popup menu :

they're ALL in mode : ENABLE OFF.

When i begin my GUI, i can select to put some ON .

1) I would to FIND the popupmenu with mode : ENABLE ON , because the POPUPMENU OFF get the string : ' ' , (empty/blank).

2) After Find the Popup "ON", Check the BLANK/EMPTY in the CELL of THIS popupmenu (ENABLE ON).

3)

- If any BLANK/EMPTY is FIND => Activate a Pushbutton

- If a popupmenu is find with BLANK EMPTY => Say ERROR

.

The tags of my popup are :

Type_X

typeX

Modele_X

ModeleX

Essieu_X

Where X are the number : 1 to 10

.

Joseph Cheng : i don't know how to use your code for my GUI.

.

This code work , but i don't know how to add the code : to select ONLY The Popupmenu mode : ENABLE ON

function Test_Callback(hObject, eventdata, handles)

 nameList = {'Essieu_', 'Type_', 'modele_', 'type', 'modele'};  
  for iName = 1:5
   for iIndex = 1:10     
        Field  = sprintf('%s%d', nameList{iName},iIndex);
        H = handles.(Field);  
        String = get(H, 'String');
        Value  = get(H, 'Value');
        EmptyStringSelected = cellfun('size', String(Value == 1),1);
                   if  any(EmptyStringSelected) 
                       fprintf(2, 'Problem: Empty string in: %s\n', Field);
                   end  
            end      
   end      
  end

The help i need is :

How to select only the popupmenu with mode : ENABLE ON in my CODE.

Or , Is it better to change the code ?

Thank you :)

Answer 2

[Joakim Magnusson]

A pop-up menu with a empty string will not be rendered, it will not be visible.

But maybe you want something like this?

 % --- Executes on button press in Continuer.
 function Continuer_Callback(~, ~, handles)

 %I don´t understand why you want to find all popupmenus with "Enable on" but this %will do it and put them in a list 
 list_popupmenu = findobj(0,'Style', 'popupmenu', 'Enable', 'On');

 %Iterate through the whole list
 for i = 1:size(list_popupmenu)

    %It's not clear what condition you want to test here
    if get(list_popupmenu(i), 'String', '') 
        errordlg('ERROR, select something in the popupmenu','Empty pop-up menu');
    end

 end

[Jan]

"Error bla bal" is not helpful. Please post the complete message.

Answer 3

[Hugo]

Thanks you Jan simon you're code is near what i would :

function Test_Callback(~, ~, handles)               % test sur les popups 

nameList = {'Essieu_', 'Type_', 'modele_', 'type', 'modele'};  
for iName = 1:5
  for iIndex = 1:10     
      Field  = sprintf('%s%d', nameList{iName},iIndex);
         if findobj('Tag',Field,'Enable','on')
            H = handles.(Field);  
            String = get(H, 'String');
            Value  = get(H, 'Value');
            EmptyStringSelected = cellfun('size', String(Value == 1),1);
               if any(EmptyStringSelected)                   
                  fprintf(2, 'Case vide dans: %s\n', Field);
               end  
         end
  end
end
if any(EmptyStringSelected)                % vérification final du contenu
    set(handles.Continuer,'Enable','off')
else
    set(handles.Continuer,'Enable','on')
end