The symptom

In the compiled application, docking could be accomplished by accessing the figure frame’s underlying Java level:

% get java frame for sophisticated modifications
jframe = get(handle(figure_handle), 'JavaFrame');
% allow docking
jframe.fHG1Client.setClientDockable(true)

Using this modification, the user is now allowed to dock and undock the figures manually. For initial docking of the figure,

javaFrame.fHG1Client.setClientWindowStyle(true,false)

could be used during figure creation. Unfortunately, there are menu entries in the Figures container which are either unwanted (since not usable) or even directly crash the standalone applications:

The unsuccessful solution

Unfortunately, the straight forward solution of getting the handle to the Figures containers’ menu bar and remove the unwanted items does not work. The reason for this is the (to me unexpected behavior) that the menu bar seems to be rebuilt whenever a figure is docked/undocked.
This is actually the same behavior that automatically rebuilds the Editor’s menu bar whenever an editor file is added/removed. The Editor container is basically the same docking container as the Figures container, as shown by Yair’s setFigDockGroup utility:

The working solution

For the working solution, many pieces presented by Yair should be put together. The first piece results from the question how to detect a dock/undock event. Since no such callback is defined, we need to use a property listener as Yair showed in his post about the continuous slider callback:

% listen to the WindowStyle property to detect docking / undocking events
hProp = findprop(handle(figure_handle),'WindowStyle');  % a schema.prop object
% if the event occurs, invoke the callback
hlistener = handle.listener(handle(figure_handle), hProp, 'PropertyPostSet',{@(source, event) Callback_DockingFcn});
% attach listener to the GUI since it needs to be known (as long as the figure exists)
setappdata(figure_handle, 'Handle_Listener', hlistener);

Now, whenever the figure’s WindowStyle property (which controls the docking state) is changed, our docking callback is invoked.
The next piece of the puzzle takes care of the menu rebuild whenever any document bar button is pressed. To overcome this behavior, the idea is to define the MousePressed callback of theses buttons to (again) invoke the docking callback. This is necessary for two reasons: First, pressing the button (i.e., changing the current figure) rebuilds the menu, overwriting our changed menu entries. Secondly, all other buttons are also somehow rebuilt and the callbacks are removed if a new figure is docked.
The handles to the document bar buttons could be found using Yair’s findjobj utility. We have already seen that the Editor container is analogous to the Figures docking container. So let’s use the method described by Yair for accessing the Editor container, to access the Figures container:

figures_container = javaObjectEDT(matlab_instance.getGroupContainer('Figures'));
figures_frame = javaObjectEDT(figures_container.getTopLevelAncestor);

Once we get the Java Frame for the Figures container, the buttons could be found by digging through its children. This finally allows to set the callback using

DTDocumentBar = javaObjectEDT(figures_frame.getRootPane.getLayeredPane.getComponent(1).getComponent(1).getComponent(0).getComponent(0).getComponent(1).getComponent(0));
ContentPanel = javaObjectEDT(DTDocumentBar.getComponent(0).getComponent(0).getViewport.getView);
if ~isempty(ContentPanel.getComponents) % less than two documents are open and no DTDocumentbar exists
    drawnow; pause(0.05)
    GroupPanel = javaObjectEDT(ContentPanel.getComponent(0));
    GroupPanel_Elements = javaObjectEDT(GroupPanel.getComponents);
    % change the MousePressed Callback for each of the buttons to invoke the function which disables the menu
    for n = 1 : GroupPanel.getComponentCount
        thisElement = GroupPanel_Elements(n);
        if isequal(char(thisElement.getClass.toString), 'class com.mathworks.widgets.desk.DTDocumentBar$DocumentButton')
            set(handle(thisElement, 'CallbackProperties'), 'MousePressedCallback', {@(source, event) Cbrake_Callback_Diagrams_DockingFcn})
        end
    end
    drawnow; pause(0.05)
end

where the loop runs through the current buttons in the document bar.
As the last step of our procedure, we finally remove (or disable) the menu entries which are unwanted. This is achieved by extracting the handle to the Figures menu by:

figures_menu = javaObjectEDT(figures_frame.getJMenuBar);

Running through the menu items, searching for the unwanted entries (as long as they have pre-defined menu-item names) at the end sets us into the position to take care of the menu items:

% run through top-level menu items
for n = 1 : figures_menu.getMenuCount
    % completely deactivate Debugging options
    if isequal(char(figures_menu.getMenu(n-1).getName), 'DesktopDebugMenu')
        DesktopDebugMenuPos = n - 1;
    end
    % Remove some items from the Desktop menu
    if isequal(char(figures_menu.getMenu(n-1).getName), 'DesktopMenu')
        desktop_menu = javaObjectEDT(figures_menu.getMenu(n-1));
        DeletePos = [];
        for m = 1: desktop_menu.getMenuComponentCount
            if ismember({char(desktop_menu.getMenuComponent(m-1).getName)}, ...
                        {'ToggleFigure PaletteCheckBoxMenuItem', 'TogglePlot BrowserCheckBoxMenuItem', 'ToggleProperty EditorCheckBoxMenuItem'})
                DeletePos(end+1) = m - 1;
            end
        end
        for m = length(DeletePos) : -1 : 1
            desktop_menu.remove(DeletePos(m))
        end
    end
end
% finally remove the "Debug" menu
if ~isempty(DesktopDebugMenuPos)
    figures_menu.remove(DesktopDebugMenuPos)
end

Since this callback is invoked whenever a figure is docked/undocked, or the currently shown figure is changed (by pressing the document bar button), all unwanted menu items within the Figures menu could be removed.
As a result, the new Figures container menu looks like:

Remarks

I must admit that above solution is still imperfect. For instance, sometimes there is a larger delay between the docking (or button press event) and the removing of the menu item. Nevertheless, this solution allows me to distribute my standalone with docked figures without having menu items directly leading to a fatal error.
Obviously, the solution has some positive side effects:

• As could be seen from the screen shot, the Matlab desktop becomes available also within your compiled applications. This might be wanted. If not, it could be removed the same way as the other menu items. One drawback of making the desktop available should be mentioned: In my tests, the standalone Matlab desktop shows the whole list of recent files I have in the Matlab editor at compile time. This is somehow ugly but not that problematic.
• Additional menu items could be added, giving more possibilities for modifications.

I have uploaded a first version of the docking and creation functions, together with a small test project, to the Matlab file Exchange. Readers are welcome to download the code and send me improvement suggestions. Or you could simply leave a comment below.

The post Disabling menu entries in deployed docked figures appeared first on Undocumented Matlab.