rqt custom imageView. Showing images from different cameras

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Hi to all,

On several occasions I have created rqt plugins for monitoring different devices, and for interacting with robots graphically. In this occasion, i have a robot with eight video cameras and i want to visualize all of them in rqt. My idea is to create a menu in "Plugins", with a group named Cameras and within it, all the cameras of the robot. I mean:

Plugins
   |_ Cameras
          |_ Top_camera
          |_ Right_camera
          |_ Left_camera
          |_ ...

I already know that exists the image_view plugin for this type of things. But i need that an end user can choose between all of the cameras easily. When the user select, for example, Top_camera, it should appear an image_view screen with the current images of that camera. (In other words, i need an image_view with the image topic already selected. Totally transparent for the user).

Is possible to do this, reusing the already implemented image_view plugin?

I am modifying the plugin.xml file to launch multiple instances, unsuccessfully:

 <class name="rqt_image_view/ImageView" type="rqt_image_view::ImageView" base_class_type="rqt_gui_cpp::Plugin">
    <description>
       Cameras
    </description>
    <qtgui>

      <group>
        <label>Cameras</label>
        <icon type="theme">folder-new</icon>
      </group>

      <label>PTZ top</label>
      <icon type="theme">camera-photo</icon>
      <statustip>Great user interface.</statustip>
    </qtgui>
  </class>

I should need eight different image_view with the corresponding topic preselected. How can i do it?

Thank you very much in advance ;)