--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.chromium.sdk/src/org/chromium/sdk/internal/BrowserTabImpl.java	Wed Dec 23 17:13:18 2009 -0800
@@ -0,0 +1,151 @@
+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.sdk.internal;
+
+import java.io.IOException;
+
+import org.chromium.sdk.Browser;
+import org.chromium.sdk.BrowserTab;
+import org.chromium.sdk.DebugEventListener;
+import org.chromium.sdk.TabDebugEventListener;
+import org.chromium.sdk.internal.tools.ToolHandler;
+import org.chromium.sdk.internal.tools.ToolName;
+import org.chromium.sdk.internal.tools.ToolOutput;
+import org.chromium.sdk.internal.tools.v8.ChromeDevToolSessionManager;
+import org.chromium.sdk.internal.tools.v8.ChromeDevToolSessionManager.AttachmentFailureException;
+import org.chromium.sdk.internal.transport.Connection;
+import org.chromium.sdk.internal.transport.Message;
+
+/**
+ * A default, thread-safe implementation of the BrowserTab interface.
+ */
+public class BrowserTabImpl extends JavascriptVmImpl implements BrowserTab {
+
+  /** Tab ID as reported by the DevTools server. */
+  private final int tabId;
+
+  /** The primary tab URL. */
+  private final String url;
+
+  private final SessionManager.Ticket<BrowserImpl.Session> connectionTicket;
+
+  private final ChromeDevToolSessionManager devToolSessionManager;
+
+  /** The listener to report debug events to. */
+  private DebugEventListener debugEventListener = null;
+
+  /** The listener to report browser-related debug events to. */
+  private TabDebugEventListener tabDebugEventListener = null;
+
+  public BrowserTabImpl(int tabId, String url, Connection connection,
+      SessionManager.Ticket<BrowserImpl.Session> ticket) throws IOException {
+    this.tabId = tabId;
+    this.url = url;
+    this.connectionTicket = ticket;
+    String tabIdString = String.valueOf(tabId);
+    ChromeDevToolOutput chromeDevToolOutput = new ChromeDevToolOutput(tabIdString, connection);
+    this.devToolSessionManager = new ChromeDevToolSessionManager(this, chromeDevToolOutput);
+
+    ToolHandler toolHandler = devToolSessionManager.getToolHandler();
+    // After this statement we are responsible for dismissing our ticket (we do it via eos message).
+    getBrowserConnectionSession().registerTab(tabId, toolHandler,
+        this.devToolSessionManager.getDebugSession());
+  }
+
+  public String getUrl() {
+    return url;
+  }
+
+  public int getId() {
+    return tabId;
+  }
+
+  @Override
+  public DebugSession getDebugSession() {
+    return devToolSessionManager.getDebugSession();
+  }
+
+  public synchronized TabDebugEventListener getTabDebugEventListener() {
+    return tabDebugEventListener;
+  }
+
+  public Browser getBrowser() {
+    return getBrowserConnectionSession().getBrowser();
+  }
+
+  public BrowserImpl.Session getBrowserConnectionSession() {
+    return connectionTicket.getSession();
+  }
+
+  synchronized void attach(TabDebugEventListener listener) throws IOException {
+    this.tabDebugEventListener = listener;
+    this.debugEventListener = listener.getDebugEventListener();
+
+    boolean normalExit = false;
+    try {
+      Result result;
+      try {
+        result = devToolSessionManager.attachToTab();
+      } catch (AttachmentFailureException e) {
+        throw new IOException(e);
+      }
+      if (Result.OK != result) {
+        throw new IOException("Failed to attach with result: " + result);
+      }
+      normalExit = true;
+    } finally {
+      if (!normalExit) {
+        devToolSessionManager.cutTheLineMyself();
+      }
+    }
+  }
+
+  public boolean detach() {
+    Result result = devToolSessionManager.detachFromTab();
+    return Result.OK == result;
+  }
+
+  public boolean isAttached() {
+    return devToolSessionManager.isAttachedForUi();
+  }
+
+  public void sessionTerminated() {
+    //browserSession.sessionTerminated(this.tabId);
+  }
+
+  public ToolHandler getV8ToolHandler() {
+    return devToolSessionManager.getToolHandler();
+  }
+
+  public ChromeDevToolSessionManager getSessionManager() {
+    return devToolSessionManager;
+  }
+
+  public void handleEosFromToolService() {
+    getBrowserConnectionSession().unregisterTab(tabId);
+    connectionTicket.dismiss();
+  }
+
+  private static class ChromeDevToolOutput implements ToolOutput {
+    private final String destination;
+    private final Connection connection;
+
+    ChromeDevToolOutput(String destination, Connection connection) {
+      this.destination = destination;
+      this.connection = connection;
+    }
+
+
+    public void send(String content) {
+      Message message =
+          MessageFactory.createMessage(ToolName.V8_DEBUGGER.value, destination, content);
+      connection.send(message);
+    }
+  }
+
+  public DebugEventListener getDebugEventListener() {
+    return debugEventListener;
+  }
+}