chrome/browser/apps/intent_helper/common_apps_navigation_throttle.h

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_APPS_INTENT_HELPER_COMMON_APPS_NAVIGATION_THROTTLE_H_
#define CHROME_BROWSER_APPS_INTENT_HELPER_COMMON_APPS_NAVIGATION_THROTTLE_H_

#include <memory>
#include <vector>

#include "chrome/browser/apps/intent_helper/apps_navigation_throttle.h"
#include "content/public/browser/navigation_throttle.h"
#include "url/gurl.h"

namespace base {
class TickClock;
}

namespace content {
class NavigationHandle;
}  // namespace content

namespace apps {

// Allows navigation to be routed to an installed app. This is a common
// throttle that work with the App Service. This only works with Chrome OS at
// the moment and will work with all platforms after the App Service supports
// apps for all platforms.
class CommonAppsNavigationThrottle : public apps::AppsNavigationThrottle {
 public:
  // Possibly creates a navigation throttle that checks if any installed apps
  // can handle the URL being navigated to.
  static std::unique_ptr<apps::AppsNavigationThrottle> MaybeCreate(
      content::NavigationHandle* handle);

  // Method intended for testing purposes only.
  // Set clock used for timing to enable manipulation during tests.
  static void SetClockForTesting(const base::TickClock* tick_clock);

  explicit CommonAppsNavigationThrottle(
      content::NavigationHandle* navigation_handle);

  CommonAppsNavigationThrottle(const CommonAppsNavigationThrottle&) = delete;
  CommonAppsNavigationThrottle& operator=(const CommonAppsNavigationThrottle&) =
      delete;

  ~CommonAppsNavigationThrottle() override;

 private:
  bool ShouldCancelNavigation(content::NavigationHandle* handle) override;
  bool ShouldShowDisablePage(content::NavigationHandle* handle) override;
  ThrottleCheckResult MaybeShowCustomResult() override;
  bool ShouldOverrideUrlLoadingForOfficeExperiment(
      const GURL& previous_url,
      const GURL& current_url) override;

  // Used to create a unique timestamped URL to force reload apps.
  // Points to the base::DefaultTickClock by default.
  static const base::TickClock* clock_;
};

}  // namespace apps

#endif  // CHROME_BROWSER_APPS_INTENT_HELPER_COMMON_APPS_NAVIGATION_THROTTLE_H_