From 0b1a9a5957f521d8d4605100652275aa6b865041 Mon Sep 17 00:00:00 2001
From: Darin Wright
Date: Wed, 23 Nov 2005 03:50:32 +0000
Subject: Use new utility listener list

---
 .../core/internal/variables/ListenerList.java      | 137 ---------------------
 .../internal/variables/StringVariableManager.java  |   3 +-
 2 files changed, 2 insertions(+), 138 deletions(-)
 delete mode 100644 org.eclipse.core.variables/src/org/eclipse/core/internal/variables/ListenerList.java

(limited to 'org.eclipse.core.variables/src')

diff --git a/org.eclipse.core.variables/src/org/eclipse/core/internal/variables/ListenerList.java b/org.eclipse.core.variables/src/org/eclipse/core/internal/variables/ListenerList.java
deleted file mode 100644
index 316970737..000000000
--- a/org.eclipse.core.variables/src/org/eclipse/core/internal/variables/ListenerList.java
+++ /dev/null
@@ -1,137 +0,0 @@
-/*******************************************************************************
- * 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 org.eclipse.core.internal.variables;
-
-
-/**
- * Local version of org.eclipse.jface.util.ListenerList (modified)s
- */
-public class ListenerList {
-	/**
-	 * The current number of listeners.
-	 * Maintains invariant: 0 <= fSize <= listeners.length.
-	 */
-	private int fSize;
-
-	/**
-	 * The list 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 Object[] fListeners= null;
-
-	/**
-	 * The empty array singleton instance, returned by getListeners()
-	 * when size == 0.
-	 */
-	private static final Object[] EmptyArray= new Object[0];
-
-	/**
-	 * Creates a listener list 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 ListenerList(int capacity) {
-		if (capacity < 1) {
-			throw new IllegalArgumentException();
-		}
-		fListeners= new Object[capacity];
-		fSize= 0;
-	}
-
-	/**
-	 * Adds a listener to the list.
-	 * Has no effect if an identical listener is already registered.
-	 *
-	 * @param listener a listener
-	 */
-	public synchronized void add(Object listener) {
-		if (listener == null) {
-			throw new IllegalArgumentException();
-		}
-		// check for duplicates using identity
-		for (int i= 0; i < fSize; ++i) {
-			if (fListeners[i] == listener) {
-				return;
-			}
-		}
-		// grow array if necessary
-		if (fSize == fListeners.length) {
-			Object[] temp= new Object[(fSize * 2) + 1];
-			System.arraycopy(fListeners, 0, temp, 0, fSize);
-			fListeners= temp;
-		}
-		fListeners[fSize++]= listener;
-	}
-
-	/**
-	 * Returns an array containing all the registered listeners.
-	 * The resulting array is unaffected by subsequent adds or removes.
-	 * If there are no listeners registered, the result is an empty array
-	 * singleton instance (no garbage is created).
-	 * 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[] getListeners() {
-		if (fSize == 0) {
-			return EmptyArray;
-		}
-		Object[] result= new Object[fSize];
-		System.arraycopy(fListeners, 0, result, 0, fSize);
-		return result;
-	}
-
-	/**
-	 * 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) {
-		if (listener == null) {
-			throw new IllegalArgumentException();
-		}
-
-		for (int i= 0; i < fSize; ++i) {
-			if (fListeners[i] == listener) {
-				if (--fSize == 0) {
-					fListeners= new Object[1];
-				} else {
-					if (i < fSize) {
-						fListeners[i]= fListeners[fSize];
-					}
-					fListeners[fSize]= null;
-				}
-				return;
-			}
-		}
-	}
-
-	/**
-	 * Removes all the listeners from the list.
-	 */
-	public void removeAll() {
-		fListeners= new Object[0];
-		fSize= 0;
-	}
-
-	/**
-	 * Returns the number of registered listeners
-	 *
-	 * @return the number of registered listeners
-	 */
-	public int size() {
-		return fSize;
-	}
-}
-
diff --git a/org.eclipse.core.variables/src/org/eclipse/core/internal/variables/StringVariableManager.java b/org.eclipse.core.variables/src/org/eclipse/core/internal/variables/StringVariableManager.java
index 323e84fa9..b2b6ed921 100644
--- a/org.eclipse.core.variables/src/org/eclipse/core/internal/variables/StringVariableManager.java
+++ b/org.eclipse.core.variables/src/org/eclipse/core/internal/variables/StringVariableManager.java
@@ -36,6 +36,7 @@ import org.eclipse.core.runtime.IConfigurationElement;
 import org.eclipse.core.runtime.IExtensionPoint;
 import org.eclipse.core.runtime.ISafeRunnable;
 import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.ListenerList;
 import org.eclipse.core.runtime.MultiStatus;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.Preferences;
@@ -187,7 +188,7 @@ public class StringVariableManager implements IStringVariableManager, IPropertyC
 	 * Constructs a new string variable manager. 
 	 */
 	private StringVariableManager() {
-		fListeners = new ListenerList(5);
+		fListeners = new ListenerList();
 	}	
 
 	/**
-- 
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