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POModel View Presenter and Composite Views
 

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    <p>I'm trying to follow the MVP (specifically Passive-View) pattern in a java swing ui application.</p> <p>The basic design of the application reminds a wizard control. The screen is divided to two main parts:</p> <ul> <li>an active view.</li> <li>a static navigation bar, with navigation buttons. </li> </ul> <p>The user can use buttons to change the active view, but the bar is always displayed. </p> <p>Modeling this scenario, I have a bunch of diffirent screers, each with it's own presenter, view interface and view implementation (using JPanel). Then I have a Shell presenter, view intefrace and view implementation, using a JFrame. The idea is that the shell will load first and always by displayed, showing the bottom navigation bar and leaving a space for the active view. The shell presenter will allow setting the current active screen, somewhat like this:</p> <pre><code>interface View { } class Presenter { View view; public Presenter(View view) { this.view = view; } public View getView() { return view; } } interface ShellView extends View { void setActiveView(View activeView); } class ShellPresenter extends Presenter { private ShellView shellView; public void setActivePresenter(Presenter activePresenter) { shellView.setActiveView(activePresenter.getView()); } } class ShellFrame implements ShellView { private JFrame frame; private JPanel activePanel; private JPanel navigationBar; public ShellFrame() { Container c = frame.getContentPane(); c.add(activePanel); c.add(navigationBar); } public setActiveView(View activeView) { ??? } } </code></pre> <p>The problem is in the setActiveView method: I'm not sure how to set the activeView to the activePanel, when the View interface is general and as such doens't know anything about JPanels. Obviously I wouldn't want my presenters to know about JPanels as well.</p>
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    1. CODid you ever figure out how to do this? None of these answers are particularly good. I just posted this thread: http://stackoverflow.com/questions/17836421/how-dumb-can-mvp-views-really-be
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