chrome/test/base/extension_load_waiter_one_shot.h

   1 // Copyright 2014 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_TEST_BASE_EXTENSION_LOAD_WAITER_ONE_SHOT_H_
   6 #define CHROME_TEST_BASE_EXTENSION_LOAD_WAITER_ONE_SHOT_H_
   7
   8 #include "base/callback_forward.h"
   9 #include "content/public/browser/notification_observer.h"
  10 #include "content/public/browser/notification_registrar.h"
  11 #include "content/public/test/test_utils.h"
  12
  13 namespace content {
  14 class BrowserContext;
  15 }  // namespace content
  16
  17 // A class used to wait for an extension to load. Callers provide a load
  18 // callback and can block until the extension loads.
  19 class ExtensionLoadWaiterOneShot : public content::NotificationObserver {
  20  public:
  21   ExtensionLoadWaiterOneShot();
  22   virtual ~ExtensionLoadWaiterOneShot();
  23
  24   // Waits for extension with |extension_id| to load. The id should be a pointer
  25   // to a static char array.
  26   void WaitForExtension(const char* extension_id, const base::Closure& load_cb);
  27
  28   // content::NotificationObserver overrides.
  29   virtual void Observe(int type,
  30                        const content::NotificationSource& source,
  31                        const content::NotificationDetails& details) override;
  32
  33   // Get the browser context associated with the loaded extension. Returns
  34   // NULL if |WaitForExtension| was not previously called.
  35   content::BrowserContext* browser_context() { return browser_context_; }
  36
  37   // Get the id of the loaded extension.
  38   const char* extension_id() { return extension_id_; }
  39
  40  private:
  41   content::NotificationRegistrar registrar_;
  42   scoped_refptr<content::MessageLoopRunner> load_looper_;
  43   const char* extension_id_;
  44   content::BrowserContext* browser_context_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(ExtensionLoadWaiterOneShot);
  47 };
  48
  49 #endif  // CHROME_TEST_BASE_EXTENSION_LOAD_WAITER_ONE_SHOT_H_