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// Copyright 2015 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 COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_THROTTLE_H_
#define COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_THROTTLE_H_
#include <string>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "content/public/browser/navigation_throttle.h"
namespace content {
class NavigationHandle;
class WebContents;
}
namespace navigation_interception {
class NavigationParams;
// This class allows the provider of the Callback to selectively ignore top
// level navigations. This is a UI thread class.
class InterceptNavigationThrottle : public content::NavigationThrottle {
public:
typedef base::Callback<bool(content::WebContents* /* source */,
const NavigationParams& /* navigation_params */)>
CheckCallback;
InterceptNavigationThrottle(content::NavigationHandle* navigation_handle,
CheckCallback should_ignore_callback,
bool run_callback_synchronously);
~InterceptNavigationThrottle() override;
// content::NavigationThrottle implementation:
ThrottleCheckResult WillStartRequest() override;
ThrottleCheckResult WillRedirectRequest() override;
private:
ThrottleCheckResult CheckIfShouldIgnoreNavigation(bool is_redirect);
// Called to perform the checks asynchronously
void RunCallbackAsynchronously(const NavigationParams& navigation_params);
// TODO(clamy): remove |throttle_was_destroyed| once crbug.com/570200 is
// fixed.
void OnAsynchronousChecksPerformed(bool should_ignore_navigation,
bool throttle_was_destroyed);
CheckCallback should_ignore_callback_;
// Whether the callback will be run synchronously or not. If the callback can
// lead to the destruction of the WebContents, this should be false.
// Otherwise this should be true.
const bool run_callback_synchronously_;
base::WeakPtrFactory<InterceptNavigationThrottle> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(InterceptNavigationThrottle);
};
} // namespace navigation_interception
#endif // COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_THROTTLE_H_
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