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<TITLE>Listing the Key Bindings in a Component (Java Developers Almanac Example)
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<h3>e860. Listing the Key Bindings in a Component</h3>
This example demonstrates how to list all the key bindings
in a component. Text components have an additional set of key
bindings called a keymap. See <a href="../javax.swing.text/ListTextKeys.html" class="eglink"><b>e1005</b> Listing the Key Bindings in a JTextComponent Keymap</a>
for an example on how to list those key bindings.
<pre> // List keystrokes in the WHEN_FOCUSED input map of the component
InputMap map = component.getInputMap(JComponent.WHEN_FOCUSED);
list(map, map.keys());
// List keystrokes in the component and in all parent input maps
list(map, map.allKeys());
// List keystrokes in the WHEN_ANCESTOR_OF_FOCUSED_COMPONENT input map of the component
map = component.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
list(map, map.keys());
// List keystrokes in all related input maps
list(map, map.allKeys());
// List keystrokes in the WHEN_IN_FOCUSED_WINDOW input map of the component
map = component.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
list(map, map.keys());
// List keystrokes in all related input maps
list(map, map.allKeys());
public static void list(InputMap map, KeyStroke[] keys) {
if (keys == null) {
return;
}
for (int i=0; i<keys.length; i++) {
// This method is defined in <a href="../javax.swing/Key2Str.html" class="eglink"><b>e859</b> Converting a KeyStroke to a String</a>
String keystrokeStr = <font color="#0066ff"><i> </i></font>keyStroke2String(keys[i]);
// Get the action name bound to this keystroke
while (map.get(keys[i]) == null) {
map = map.getParent();
}
if (map.get(keys[i]) instanceof String) {
String actionName = (String)map.get(keys[i]);
} else {
Action action = (Action)map.get(keys[i]);
}
}
}
</pre>
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<b>Related Examples</b></font></td>
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e858. <a class="eglink" href="KeyStrokes.html?l=rel">
Creating a KeyStroke and Binding It to an Action
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e859. <a class="eglink" href="Key2Str.html?l=rel">
Converting a KeyStroke to a String
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e861. <a class="eglink" href="ShareActions.html?l=rel">
Sharing an InputMap or an ActionMap Between Two Components
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e862. <a class="eglink" href="FindKeyBind.html?l=rel">
Finding a Key Binding in a Component
</a>
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e863. <a class="eglink" href="ChangeInputMap.html?l=rel">
Adding an InputMap to a Component
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