1 files changed, 75 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OleEventTable.java b/bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OleEventTable.java
new file mode 100755
index 0000000000..1676b2f66d
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT OLE Win32/win32/org/eclipse/swt/ole/win32/OleEventTable.java
@@ -0,0 +1,75 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 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.swt.ole.win32;
+
+
+/**
+* The OleEventTable class implements a simple
+* look up mechanism that maps an event type
+* to a listener.  Multiple listeners for the
+* same event type are supported.
+*
+*/
+
+class OleEventTable {
+	int [] types;
+	OleListener [] handlers;
+void hook (int eventType, OleListener handler) {
+	if (types == null) types = new int [4];
+	if (handlers == null) handlers = new OleListener [4];
+	for (int i=0; i<types.length; i++) {
+		if (types [i] == 0) {
+			types [i] = eventType;
+			handlers [i] = handler;
+			return;
+		}
+	}
+	int size = types.length;
+	int [] newTypes = new int [size + 4];
+	OleListener [] newHandlers = new OleListener [size + 4];
+	System.arraycopy (types, 0, newTypes, 0, size);
+	System.arraycopy (handlers, 0, newHandlers, 0, size);
+	types = newTypes;  handlers = newHandlers;
+	types [size] = eventType;  handlers [size] = handler;
+}
+boolean hooks (int eventType) {
+	if (handlers == null) return false;
+	for (int i=0; i<types.length; i++) {
+		if (types [i] == eventType) return true;
+	}
+	return false;
+}
+void sendEvent (OleEvent event) {
+	if (handlers == null) return;
+	for (int i=0; i<types.length; i++) {
+		if (types [i] == event.type) {
+			OleListener listener = handlers [i];
+			if (listener != null) listener.handleEvent (event);
+		}
+	}
+}
+void unhook (int eventType, OleListener handler) {
+	if (handlers == null) return;
+	for (int i=0; i<types.length; i++) {
+		if ((types [i] == eventType) && (handlers [i] == handler)) {
+			types [i] = 0;
+			handlers [i] = null;
+			return;
+		}
+	}
+}
+boolean hasEntries() {
+	for (int i=0; i<types.length; i++) {
+		if (types[i] != 0) return true;
+	}
+	return false;
+}
+}