Oops, forgot to add this file.

java/webclient/classes/org/mozilla/webclient/motif/MozillaEventThread.java

@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * 
+ * The contents of this file are subject to the Mozilla Public License
+ * Version 1.0 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ */
+
+package org.mozilla.webclient.motif;
+
+
+/**
+ * This is MozillaEventThread. It's job is to process any pending mozilla events
+ * which have been queued up.
+ * 
+ * It also contains a private static hashtable mapping of GTK window to 
+ * WebShellInitContexts (see BrowserControllMozillaShim.cpp). It needs this
+ * because in order to process any GTK / Mozilla events, it needs a pointer
+ * to the native event queue, the native web shell, as well as native pointers
+ * to other things which it can't readily access.
+ * So what we do is when the WebShellInitContext for a GTK Window first gets 
+ * created, it gets stored in the webShellContextMapping hashtable below. Then 
+ * we can now easily lookup the appropriate WebShellInitContext when it is needed.
+ * 
+ * <B>Lifetime And Scope</B> <P>
+ * There will be one of these per BrowserControlCanvas (but hasn't been tested yet)
+ *
+ * @version $Id: MozillaEventThread.java,v 1.1 1999-08-13 23:21:19 mark.lin%eng.sun.com Exp $
+ * @see	org.mozilla.webclient.motif.MozillaEventThread
+ * 
+ */
+
+import java.util.*;
+
+public class MozillaEventThread extends Thread {
+
+    static private int eventQueueCount = 0;
+    // A mapping of gtkWindowID <-> WebShellInitContext structs
+    static private Hashtable webShellContextMapping = null;
+
+
+    protected MotifBrowserControlCanvas browserCanvas;
+
+    // Calling this will process any GTK / Mozilla events which have been pending
+    public native void processNativeEventQueue(int nativeWebShellContext);
+    
+    public static void storeContext(int gtkWinID, int nativeWebShellContext) {
+        if (webShellContextMapping == null) {
+            webShellContextMapping = new Hashtable();
+        }
+
+        webShellContextMapping.put(new Integer(gtkWinID), new Integer(nativeWebShellContext));
+    }
+
+    public static int getContext(int gtkWinID) {
+        Integer result = (Integer) webShellContextMapping.get(new Integer(gtkWinID));
+
+        if (result != null) {
+            return result.intValue();
+        }
+ 
+        System.out.println("Requested invalid NativeWebShellInitContext!\n");
+        return 0;
+    }
+
+    public MozillaEventThread(MotifBrowserControlCanvas canvas) {
+        super("Mozilla-Event-Thread-" + eventQueueCount);
+
+        this.browserCanvas = canvas;
+        eventQueueCount++;
+        this.setPriority(Thread.MAX_PRIORITY);
+    }
+
+    public void run() {
+        // Infinite loop to eternity.
+	    while (true) {
+            // PENDING(mark): Do we need to yield?
+            Thread.currentThread().yield();
+
+            this.processNativeEventQueue(getContext(this.browserCanvas.getGTKWinPtr()));
+        }
+    }
+
+}