1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_UI_GTK_PROCESS_SINGLETON_DIALOG_H_ 6 #define CHROME_BROWSER_UI_GTK_PROCESS_SINGLETON_DIALOG_H_ 7 #pragma once 8 9 #include <string> 10 11 #include "base/basictypes.h" 12 #include "ui/base/gtk/gtk_signal.h" 13 14 typedef struct _GtkWidget GtkWidget; 15 16 // Displays an error to the user when the ProcessSingleton cannot acquire the 17 // lock. This runs the message loop itself as the browser message loop has not 18 // started by that point in the startup process. 19 class ProcessSingletonDialog { 20 public: 21 // Shows the dialog, and returns once the dialog has been closed. 22 static void ShowAndRun(const std::string& message); 23 24 private: 25 explicit ProcessSingletonDialog(const std::string& message); 26 27 CHROMEGTK_CALLBACK_1(ProcessSingletonDialog, void, OnResponse, int); 28 29 GtkWidget* dialog_; 30 31 DISALLOW_COPY_AND_ASSIGN(ProcessSingletonDialog); 32 }; 33 34 #endif // CHROME_BROWSER_UI_GTK_PROCESS_SINGLETON_DIALOG_H_ 35