Gtk: Add error dialog when profile was in use on a different computer.

BUG=17549
TEST=see bug

Review URL: http://codereview.chromium.org/173222

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@24008 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 34 insertions, 0 deletions

diff --git a/chrome/browser/gtk/process_singleton_dialog.h b/chrome/browser/gtk/process_singleton_dialog.h
new file mode 100644
index 0000000..fa303e2
--- /dev/null
+++ b/chrome/browser/gtk/process_singleton_dialog.h
@@ -0,0 +1,34 @@
+// 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.
+
+#ifndef CHROME_BROWSER_GTK_PROCESS_SINGLETON_DIALOG_H_
+#define CHROME_BROWSER_GTK_PROCESS_SINGLETON_DIALOG_H_
+
+#include <string>
+
+#include <gtk/gtk.h>
+
+#include "base/basictypes.h"
+
+// Displays an error to the user when the ProcessSingleton cannot acquire the
+// lock.  This runs the message loop itself as the browser message loop has not
+// started by that point in the startup process.
+class ProcessSingletonDialog {
+ public:
+  // Shows the dialog, and returns once the dialog has been closed.
+  static void ShowAndRun(const std::string& message);
+
+ private:
+  explicit ProcessSingletonDialog(const std::string& message);
+
+  static void OnResponse(GtkWidget* widget,
+                         int response,
+                         ProcessSingletonDialog* dialog);
+
+  GtkWidget* dialog_;
+
+  DISALLOW_COPY_AND_ASSIGN(ProcessSingletonDialog);
+};
+
+#endif  // CHROME_BROWSER_GTK_PROCESS_SINGLETON_DIALOG_H_