Initial commit

[debian/openrocket] / src / net / sf / openrocket / util / GUIUtil.java

diff --git a/src/net/sf/openrocket/util/GUIUtil.java b/src/net/sf/openrocket/util/GUIUtil.java
new file mode 100644 (file)
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+++ b/src/net/sf/openrocket/util/GUIUtil.java
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+package net.sf.openrocket.util;
+
+import java.awt.Component;
+import java.awt.KeyboardFocusManager;
+import java.awt.Window;
+import java.awt.event.ActionEvent;
+import java.awt.event.KeyEvent;
+import java.awt.event.WindowEvent;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
+import javax.swing.AbstractAction;
+import javax.swing.Action;
+import javax.swing.JButton;
+import javax.swing.JComponent;
+import javax.swing.JDialog;
+import javax.swing.JRootPane;
+import javax.swing.KeyStroke;
+import javax.swing.RootPaneContainer;
+import javax.swing.SwingUtilities;
+
+public class GUIUtil {
+
+       private static final KeyStroke ESCAPE = KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0);
+       private static final String CLOSE_ACTION_KEY =  "escape:WINDOW_CLOSING"; 
+       
+       
+       /**
+        * Add the correct action to close a JDialog when the ESC key is pressed.
+        * The dialog is closed by sending is a WINDOW_CLOSING event.
+        * 
+        * @param dialog        the dialog for which to install the action.
+        */
+       public static void installEscapeCloseOperation(final JDialog dialog) { 
+           Action dispatchClosing = new AbstractAction() { 
+               public void actionPerformed(ActionEvent event) { 
+                   dialog.dispatchEvent(new WindowEvent(dialog, WindowEvent.WINDOW_CLOSING)); 
+               } 
+           }; 
+           JRootPane root = dialog.getRootPane(); 
+           root.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(ESCAPE, CLOSE_ACTION_KEY); 
+           root.getActionMap().put(CLOSE_ACTION_KEY, dispatchClosing); 
+       }
+       
+       
+       /**
+        * Set the given button as the default button of the frame/dialog it is in.  The button
+        * must be first attached to the window component hierarchy.
+        * 
+        * @param button        the button to set as the default button.
+        */
+       public static void setDefaultButton(JButton button) {
+               Window w = SwingUtilities.windowForComponent(button);
+               if (w == null) {
+                       throw new IllegalArgumentException("Attach button to a window first.");
+               }
+               if (!(w instanceof RootPaneContainer)) {
+                       throw new IllegalArgumentException("Button not attached to RootPaneContainer, w="+w);
+               }
+               ((RootPaneContainer)w).getRootPane().setDefaultButton(button);
+       }
+
+       
+       
+       /**
+        * Change the behavior of a component so that TAB and Shift-TAB cycles the focus of
+        * the components.  This is necessary for e.g. <code>JTextArea</code>.
+        * 
+        * @param c             the component to modify
+        */
+    public static void setTabToFocusing(Component c) {
+        Set<KeyStroke> strokes = new HashSet<KeyStroke>(Arrays.asList(KeyStroke.getKeyStroke("pressed TAB")));
+        c.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, strokes);
+        strokes = new HashSet<KeyStroke>(Arrays.asList(KeyStroke.getKeyStroke("shift pressed TAB")));
+        c.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, strokes);
+    }
+
+       
+}