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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_MEDIA_ROUTER_BROWSER_PRESENTATION_PRESENTATION_NAVIGATION_POLICY_H_
#define COMPONENTS_MEDIA_ROUTER_BROWSER_PRESENTATION_PRESENTATION_NAVIGATION_POLICY_H_
namespace content {
class NavigationHandle;
} // namespace content
namespace media_router {
// Selected calls to the navigation methods in WebContentsObserver are
// delegated to this object to determine whether a navigation is allowed. If
// any call returns false, the presentation tab is destroyed.
class NavigationPolicy {
public:
virtual ~NavigationPolicy();
virtual bool AllowNavigation(
content::NavigationHandle* navigation_handle) = 0;
};
// This default policy allows all navigations.
class DefaultNavigationPolicy : public NavigationPolicy {
public:
DefaultNavigationPolicy();
~DefaultNavigationPolicy() override;
bool AllowNavigation(content::NavigationHandle* navigation_handle) override;
};
// Navigation policy for presentations, where top-level navigations are not
// allowed.
class PresentationNavigationPolicy : public NavigationPolicy {
public:
PresentationNavigationPolicy();
~PresentationNavigationPolicy() override;
bool AllowNavigation(content::NavigationHandle* navigation_handle) override;
private:
bool first_navigation_started_ = false;
};
} // namespace media_router
#endif // COMPONENTS_MEDIA_ROUTER_BROWSER_PRESENTATION_PRESENTATION_NAVIGATION_POLICY_H_
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