content/browser/renderer_host/navigation_controller_delegate.h

// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_RENDERER_HOST_NAVIGATION_CONTROLLER_DELEGATE_H_
#define CONTENT_BROWSER_RENDERER_HOST_NAVIGATION_CONTROLLER_DELEGATE_H_

#include "content/public/browser/invalidate_type.h"

#if BUILDFLAG(IS_ANDROID)
namespace gfx {
class ColorSpace;
enum class ContentColorUsage : uint8_t;
}  // namespace gfx

namespace viz {
class RasterContextProvider;
}  // namespace viz
#endif  // BUILDFLAG(IS_ANDROID)

namespace content {

struct EntryChangedDetails;
struct LoadCommittedDetails;
struct PrunedDetails;

// Interface for objects embedding a NavigationController to provide the
// functionality NavigationController needs.
class NavigationControllerDelegate {
 public:
  virtual ~NavigationControllerDelegate() {}

  virtual void NotifyNavigationStateChangedFromController(
      InvalidateTypes changed_flags) = 0;

  // Methods from WebContentsImpl that NavigationControllerImpl needs to
  // call. NavigationControllerImpl cannot call them directly because
  // renderer_host/ cannot depend on WebContents.
  virtual void NotifyBeforeFormRepostWarningShow() = 0;
  virtual void NotifyNavigationEntryCommitted(
      const LoadCommittedDetails& load_details) = 0;
  virtual void NotifyNavigationEntryChanged(
      const EntryChangedDetails& change_details) = 0;
  virtual void NotifyNavigationListPruned(
      const PrunedDetails& pruned_details) = 0;
  virtual void NotifyNavigationEntriesDeleted() = 0;
  virtual void ActivateAndShowRepostFormWarningDialog() = 0;

  // Returns whether URLs for aborted browser-initiated navigations should be
  // preserved in the omnibox.  Defaults to false.
  virtual bool ShouldPreserveAbortedURLs() = 0;

  virtual void UpdateOverridingUserAgent() = 0;

#if BUILDFLAG(IS_ANDROID)
  virtual scoped_refptr<viz::RasterContextProvider>
  GetRasterContextProvider() = 0;
  virtual gfx::ColorSpace GetOutputColorSpace(
      gfx::ContentColorUsage color_usage,
      bool needs_alpha) = 0;
#endif  // BUILDFLAG(IS_ANDROID)
};

}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_NAVIGATION_CONTROLLER_DELEGATE_H_