Has anyone found a way to enable/disable tabs in App Designer?

Question

Matt Calton 2016-8-22

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https://ww2.mathworks.cn/matlabcentral/answers/300469-has-anyone-found-a-way-to-enable-disable-tabs-in-app-designer

编辑： Jason Kulpe 2020-8-13

I am building a fairly simple GUI in I have tried implementations using findjobj, such as:

jtabgroup=findjobj(tabgrp);
jtabgroup.setEnabledAt(1,0);

but I am unsure if the app class can be read the same way (I'm very new to Java implementations). Any help would be much appreciated!

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Paolo Fiore 2020-4-18

编辑：Paolo Fiore 2020-4-18

在 MATLAB Online 中打开

I found a possible way:

app.tabNameYouWantToDisable.Parent=[];

this will make the specific tab disappear from the GUI.

When you are done with the code execution you can reassign its parent:

app.tabNameYouWantToDisable.Parent=app.TabGroup;

I found this while using Matlab R2020a.

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Answer 1

David Barry 2016-8-25

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I don't believe that you can yet enable/disable tabs in MATLAB and this is something I have requested from them. Using findjobj with App Designer components is probably not going to be much use to you anyway as they are no longer Java Swing components like their uicontrol predecessors.

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Matt Calton 2016-8-26

Thank you very much!

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Answer 2

Adam Danz 2020-7-7

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As of r2020a, there isn't an option to set the visibility or 'enable' property of a tab. However, you can control which tabs can be selected via the use of a SelectionChangedFcn.

Here's a demo that uses check boxes to determine whether a tab can be selected:

https://www.mathworks.com/matlabcentral/answers/550827-matlab-gui-tabgroup-visibility-checkbox#comment_904678

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Answer 3

Jason Kulpe 2020-8-13

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https://ww2.mathworks.cn/matlabcentral/answers/300469-has-anyone-found-a-way-to-enable-disable-tabs-in-app-designer#answer_479379

编辑：Jason Kulpe 2020-8-13

在 MATLAB Online 中打开

In my App I need to disable a tab's features (not the tab itself) while a process is occuring. My solution is to recursively find the children components of a given tab and set component.Enable = true or false. For graphics purposes I dont disable uilabels, etc (doesn't look great), so I exlude these. Edit: using MATLAB R2019a

function setEnableWithChildren(app, component, value)
    % Recursively set enable status for all items
    
    if isa(component, 'matlab.ui.control.Label') || isa(component, 'matlab.ui.control.Lamp')
        return % Don't enable labels, etc.
    end
    
    if isprop(component, 'Enable')
        if isa(component, 'matlab.ui.control.Table')
            if value
                component.Enable = 'on'; % Table uses on/off
            else
                component.Enable = 'off';
            end
        else
            component.Enable = value;
        end
    end
    
    if isprop(component, 'Children')
        children = allchild(component);
    else
        children = [];
    end
    for child = reshape(children, 1, [])
        app.setEnableWithChildren(child, value);
    end
end