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// Copyright (c) 2012 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_EXTENSIONS_NAVIGATION_OBSERVER_H_
#define CHROME_BROWSER_EXTENSIONS_NAVIGATION_OBSERVER_H_
#include <memory>
#include <set>
#include <string>
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observer.h"
#include "chrome/browser/extensions/extension_install_prompt.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "extensions/browser/extension_registry_observer.h"
class Profile;
namespace content {
class NavigationController;
}
namespace extensions {
// The NavigationObserver listens to navigation notifications. If the user
// navigates into an extension that has been disabled due to a permission
// increase, it prompts the user to accept the new permissions and re-enables
// the extension.
class NavigationObserver : public content::NotificationObserver,
public ExtensionRegistryObserver {
public:
explicit NavigationObserver(Profile* profile);
~NavigationObserver() override;
// content::NotificationObserver
void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) override;
// Allows showing the prompt for the same extensions multiple times in a
// session.
static void SetAllowedRepeatedPromptingForTesting(bool allowed);
private:
// Registers for the NOTIFICATION_NAV_ENTRY_COMMITTED notification.
void RegisterForNotifications();
// Checks if |nav_controller| has entered an extension's web extent. If it
// has and the extension is disabled due to a permissions increase, this
// prompts the user to accept the new permissions and enables the extension.
void PromptToEnableExtensionIfNecessary(
content::NavigationController* nav_controller);
void OnInstallPromptDone(ExtensionInstallPrompt::Result result);
// extensions::ExtensionRegistryObserver:
void OnExtensionUninstalled(content::BrowserContext* browser_context,
const Extension* extension,
UninstallReason reason) override;
content::NotificationRegistrar registrar_;
Profile* profile_;
// The UI used to confirm enabling extensions.
std::unique_ptr<ExtensionInstallPrompt> extension_install_prompt_;
// The data we keep track of when prompting to enable extensions.
std::string in_progress_prompt_extension_id_;
content::NavigationController* in_progress_prompt_navigation_controller_;
// The extension ids we've already prompted the user about.
std::set<std::string> prompted_extensions_;
ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
extension_registry_observer_;
base::WeakPtrFactory<NavigationObserver> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(NavigationObserver);
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_NAVIGATION_OBSERVER_H_
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