pop up menu regarding

hello,

how can i select a file from the pop up menu?

eg:, I currently choose the .mat file via push bottom, which I think is a bit complicated.

I want to select a .mat file that is stored in a folder via a pop up menu (the .mat file is already in one folder), to make it easier to see

what code should i use?

Thank you

[Geoff Hayes]

@rain - how is a pop up menu easier? Does you push button callback call the uigetfile function to allow the user to choose the file?

Answer 1

[Voss]

function file_name = get_mat_file()

h = struct();

h.fig = figure( ...
    'Units','pixels', ...
    'NumberTitle','off', ...
    'IntegerHandle','off', ...
    'HandleVisibility','off', ...
    'DockControls','off', ...
    'Toolbar','none', ...
    'Menubar','none', ...
    'Name','Select File', ...
    'WindowStyle','modal');

h.text_dir = uicontrol( ...
    'Parent',h.fig, ...
    'Style','text', ...
    'Units','pixels', ...
    'String','Folder:', ...
    'HorizontalAlignment','right');
h.edit_dir = uicontrol( ...
    'Parent',h.fig, ...
    'Style','edit', ...
    'Units','pixels', ...
    'String','', ...
    'HorizontalAlignment','left', ...
    'Callback',@cb_dir);
h.pb_dir = uicontrol( ...
    'Parent',h.fig, ...
    'Style','pushbutton', ...
    'Units','pixels', ...
    'String','...', ...
    'Callback',@cb_dir);

h.text_file = uicontrol( ...
    'Parent',h.fig, ...
    'Style','text', ...
    'Units','pixels', ...
    'String','File:', ...
    'HorizontalAlignment','right');
h.popup_file = uicontrol( ...
    'Parent',h.fig, ...
    'Style','popupmenu', ...
    'Units','pixels', ...
    'String',{});

h.pb_ok = uicontrol( ...
    'Parent',h.fig, ...
    'Style','pushbutton', ...
    'Units','pixels', ...
    'String','OK', ...
    'Callback',@cb_ok);

set(h.fig,'SizeChangedFcn',@scf);

fpos = get(h.fig,'Position');
set(h.fig,'Position',[fpos([1 2]) 350 150]);

file_name = '';

is_older_than_isfolder = verLessThan('matlab','9.3');

update_ui();

uiwait(h.fig);



    function scf(~,~)
        pos = get(h.fig,'Position');
        set(h.text_dir,'Position',[10 pos(4)-29 60 18]);
        set(h.edit_dir,'Position',[72 pos(4)-30 max(0,pos(3)-104) 22]);
        set(h.pb_dir,'Position',[pos(3)-28 pos(4)-30 18 22]);
        set(h.text_file,'Position',[10 pos(4)-59 60 18]);
        set(h.popup_file,'Position',[72 pos(4)-60 max(0,pos(3)-82) 22]);
        set(h.pb_ok,'Position',[pos(3)-75 8 65 26]);
    end



    function cb_dir(src,~)
        if src == h.pb_dir
            pn = uigetdir( ...
                get(h.edit_dir,'String'), ...
                'Select Folder');
            if isequal(pn,0)
                return
            end
            set(h.edit_dir,'String',pn);
        end
        update_ui();
    end



    function update_ui()
        set(h.pb_ok,'Enable','off');
        pn = get(h.edit_dir,'String');
        if (is_older_than_isfolder && ~exist(pn,'dir')) ...
                || (~is_older_than_isfolder && ~isfolder(pn))
            set(h.popup_file,'String',{'< Folder Does not Exist >'},'Value',1);
            return
        end
        files = dir(fullfile(pn,'*.mat'));
        if isempty(files)
            set(h.popup_file,'String',{'< No mat Files >'},'Value',1);
            return
        end
        set(h.popup_file,'String',{files.name},'Value',1);
        set(h.pb_ok,'Enable','on');
    end



    function cb_ok(~,~)
        str = get(h.popup_file,'String');
        file_name = fullfile( ...
            get(h.edit_dir,'String'), ...
            str{get(h.popup_file,'Value')});
        delete(h.fig);
    end


end