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POJava: JPanel doesn't pick up keyboard bindings
 

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    <h1>Problem</h1> <p>I've been fiddling to make keybindings work properly in an application I've written. </p> <p>Previously, I've been using a variant of the following; <code>panel.registerKeyboardAction(this, "createNewFood", KeyStroke.getKeyStroke(KeyEvent.VK_I, KeyEvent.CTRL_DOWN_MASK), JComponent.WHEN_IN_FOCUSED_WINDOW);</code></p> <p>But since I read in the documentation that registerKeyboardAction was marked as deprecated, I tried switching to the preferred method, which goes something like this; <code>panel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke("control I"), new NewFoodAction());</code></p> <p>Unfortunately this doesn't seem to be working. </p> <h1>What I've Tried</h1> <p>I've searched the web and I've tried a bunch of different approaches unsuccessfully; </p> <ul> <li>Instead of binding the key to the panel I tried attaching it to the result of <code>getRootPane()</code>. Didn't work. </li> <li>I've tried all of the different "conditions"; <code>WHEN_IN_FOCUSED_WINDOW</code>, <code>WHEN_ANCESTOR_OF_FOCUSED_COMPONENT</code>, <code>WHEN_FOCUSED</code>, didn't work.</li> <li>I tried setting <code>panel.setFocusable(true)</code>; didn't work.</li> <li>I tried using <code>panel.requestFocusInWindow()</code> just to see if it could work conditionally; didn't work.</li> </ul> <p>If I attach the keybinding to another component, for instance a JTextField, then it works as it's supposed to. </p> <p><strong>Some other information that <em>might</em> be relevant</strong> (but I don't really think it is); </p> <ul> <li>I'm using MigLayout for the panel. Don't think this affects anything but who knows. </li> <li>I have other keybindings present (that is, other keystrokes bound to other components)</li> </ul> <p>Here's some sample code: </p> <pre><code>public FoodFrame() { super("MealTrack"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setPreferredSize(new Dimension(1400, 600)); setLocation(300, 100); setVisible(true); panel = new JPanel(new MigLayout("fill", "[grow][]", "[][][][grow][][]")); add(panel); panel.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(KeyStroke.getKeyStroke("control I"), new NewFoodAction()); pack(); filter.requestFocusInWindow(); } private class NewFoodAction extends AbstractAction { @Override public void actionPerformed(ActionEvent e) { System.out.println("called"); } } </code></pre> <p>}</p> <p>Does anyone know what the problem seems to be?</p>
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    1. CO*"I'm using MigLayout for the panel. Don't think this affects anything but who knows."* You will if you swap it out for `FlowLayout` and the problem persists. For better help sooner, post an [SSCCE](http://sscce.org/).
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      1. USAndrew Thompson
 

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