Bundle: fix memory leak at init/reset

[nikiroo-utils.git] / src / be / nikiroo / utils / ui / ListenerPanel.java

diff --git a/src/be/nikiroo/utils/ui/ListenerPanel.java b/src/be/nikiroo/utils/ui/ListenerPanel.java
deleted file mode 100644 (file)
index 144cdd2..0000000
--- a/src/be/nikiroo/utils/ui/ListenerPanel.java
+++ /dev/null
@@ -1,101 +0,0 @@
-package be.nikiroo.utils.ui;
-
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.util.LinkedList;
-import java.util.Queue;
-
-import javax.swing.JPanel;
-
-/**
- * A {@link JPanel} with the default {@link ActionListener} add/remove/fire
- * methods.
- * <p>
- * Note that it will queue all events until at least one listener comes (or
- * comes back!); this first (or at least currently unique) listener will drain
- * the queue.
- * 
- * @author niki
- */
-public class ListenerPanel extends JPanel {
-       private static final long serialVersionUID = 1L;
-
-       /** Waiting queue until at least one listener is here to get the events. */
-       private final Queue<ActionEvent> waitingQueue;
-
-       /**
-        * Create a new {@link ListenerPanel}.
-        */
-       public ListenerPanel() {
-               waitingQueue = new LinkedList<ActionEvent>();
-       }
-
-       /**
-        * Check that this {@link ListenerPanel} currently has
-        * {@link ActionListener}s that listen on it.
-        * 
-        * @return TRUE if it has
-        */
-       public synchronized boolean hasListeners() {
-               return listenerList.getListenerList().length > 1;
-       }
-
-       /**
-        * Check how many events are currently waiting for an
-        * {@link ActionListener}.
-        * 
-        * @return the number of waiting events (can be 0)
-        */
-       public synchronized int getWaitingEventCount() {
-               return waitingQueue.size();
-       }
-
-       /**
-        * Adds the specified action listener to receive action events from this
-        * {@link ListenerPanel}.
-        *
-        * @param listener
-        *            the action listener to be added
-        */
-       public synchronized void addActionListener(ActionListener listener) {
-               if (!hasListeners()) {
-                       while (!waitingQueue.isEmpty()) {
-                               listener.actionPerformed(waitingQueue.remove());
-                       }
-               }
-
-               listenerList.add(ActionListener.class, listener);
-       }
-
-       /**
-        * Removes the specified action listener so that it no longer receives
-        * action events from this {@link ListenerPanel}.
-        *
-        * @param listener
-        *            the action listener to be removed
-        */
-       public synchronized void removeActionListener(ActionListener listener) {
-               listenerList.remove(ActionListener.class, listener);
-       }
-
-       /**
-        * Notify the listeners of an action.
-        * 
-        * @param listenerCommand
-        *            A string that may specify a command (possibly one of several)
-        *            associated with the event
-        */
-       protected synchronized void fireActionPerformed(String listenerCommand) {
-               ActionEvent e = new ActionEvent(this, ActionEvent.ACTION_PERFORMED,
-                               listenerCommand);
-
-               ActionListener[] listeners = getListeners(ActionListener.class);
-               if (listeners.length > 0) {
-                       for (ActionListener action : listeners) {
-                               action.actionPerformed(e);
-                       }
-               } else {
-                       waitingQueue.add(e);
-               }
-       }
-}