X-Git-Url: http://git.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse.xdebug.core/src/net/sourceforge/phpeclipse/xdebug/core/ListenerMap.java b/net.sourceforge.phpeclipse.xdebug.core/src/net/sourceforge/phpeclipse/xdebug/core/ListenerMap.java
new file mode 100644
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--- /dev/null
+++ b/net.sourceforge.phpeclipse.xdebug.core/src/net/sourceforge/phpeclipse/xdebug/core/ListenerMap.java
@@ -0,0 +1,125 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpeclipse.xdebug.core;
+
+import java.util.HashMap;
+
+
+/**
+ * Local version of org.eclipse.jface.util.ListenerList (modified)s
+ */
+public class ListenerMap {
+	/**
+	 * The current number of listeners.
+	 * Maintains invariant: 0 <= fSize <= listeners.length.
+	 */
+	private int fSize;
+
+	/**
+	 * The map of listeners.  Initially <code>null</code> but initialized
+	 * to an array of size capacity the first time a listener is added.
+	 * Maintains invariant: listeners != null if and only if fSize != 0
+	 */
+	private HashMap fListeners = null;
+//	private HashMap<String,Object> fListeners = null;
+
+	/**
+	 * Creates a listener map with the given initial capacity.
+	 *
+	 * @param capacity the number of listeners which this list can initially accept 
+	 *    without growing its internal representation; must be at least 1
+	 */
+	public ListenerMap(int capacity) {
+		if (capacity < 1) {
+			throw new IllegalArgumentException();
+		}
+		fListeners = new HashMap(capacity);
+		fSize = 0;
+	}
+
+	/**
+	 * Adds a listener to the Map.
+	 * Overwrites an existing listener with the same IDE_Key.
+	 *
+	 * @param listener a listener
+	 * @param ideKey IDE-key of the listener
+	 */
+	public synchronized void add(Object listener,String ideKey) {
+		if (listener == null) {
+			throw new IllegalArgumentException();
+		}
+		// check for duplicates using identity
+		if (fListeners.get(ideKey) != null)
+			fSize++;
+		fListeners.put(ideKey,listener);
+	}
+
+	/**
+	 * Returns a map containing all the registered listeners.
+	 * The resulting map is unaffected by subsequent adds or removes.
+	 * If there are no listeners registered, the result is an empty map.
+	 * Use this method when notifying listeners, so that any modifications
+	 * to the listener list during the notification will have no effect on the
+	 * notification itself.
+	 */
+	public synchronized HashMap getListeners() {
+		if (fSize == 0) {
+			return null;
+		}
+		HashMap result = new HashMap(fListeners);
+		return result;
+	}
+	
+	/**
+	 * Returns the listener associated with the ideKey.
+	 * If there is no listener registered, the result is null.
+	 * Use this method when notifying listeners, so that any modifications
+	 * to the listener list during the notification will have no effect on the
+	 * notification itself.
+	 */
+	public synchronized Object getListener(String ideKey) {
+		return fListeners.get(ideKey);
+	}
+
+	/**
+	 * Removes a listener from the list.
+	 * Has no effect if an identical listener was not already registered.
+	 *
+	 * @param listener a listener
+	 */
+	public synchronized void remove(Object listener,String ideKey) {
+		if (listener == null) {
+			throw new IllegalArgumentException();
+		}
+		
+		if (fListeners.get(ideKey) == listener) {
+			fListeners.remove(ideKey);
+			fSize--;
+		}
+	}
+
+	/**
+	 * Removes all the listeners from the list.
+	 */
+	public synchronized void removeAll() {
+		fListeners.clear();
+		fSize = 0;
+	}
+
+	/**
+	 * Returns the number of registered listeners
+	 *
+	 * @return the number of registered listeners
+	 */
+	public int size() {
+		return fSize;
+	}
+}
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