chromium/content/browser/renderer_host/frame_tree.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_FRAME_TREE_H_
#define CONTENT_BROWSER_RENDERER_HOST_FRAME_TREE_H_

#include <stdint.h>

#include <iterator>
#include <memory>
#include <string>
#include <unordered_map>

#include "base/containers/queue.h"
#include "base/dcheck_is_on.h"
#include "base/functional/callback.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/safe_ref.h"
#include "base/memory/weak_ptr.h"
#include "content/browser/renderer_host/frame_tree_node.h"
#include "content/browser/renderer_host/navigator.h"
#include "content/browser/renderer_host/navigator_delegate.h"
#include "content/browser/renderer_host/render_frame_host_manager.h"
#include "content/browser/renderer_host/render_view_host_enums.h"
#include "content/common/content_export.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "services/service_manager/public/mojom/interface_provider.mojom.h"
#include "third_party/blink/public/common/features.h"
#include "third_party/blink/public/common/frame/frame_owner_element_type.h"
#include "third_party/blink/public/common/tokens/tokens.h"
#include "third_party/blink/public/mojom/frame/frame_owner_properties.mojom-forward.h"
#include "url/origin.h"

namespace blink {
namespace mojom {
class BrowserInterfaceBroker;
enum class TreeScopeType;
}  // namespace mojom

struct FramePolicy;
}  // namespace blink

namespace content {

class BrowserContext;
class PageDelegate;
class RenderFrameHostDelegate;
class RenderViewHostDelegate;
class RenderViewHostImpl;
class RenderFrameHostManager;
class RenderWidgetHostDelegate;
class SiteInstance;
class SiteInstanceGroup;

// Represents the frame tree for a page. With the exception of the main frame,
// all FrameTreeNodes will be created/deleted in response to frame attach and
// detach events in the DOM.
//
// The main frame's FrameTreeNode is special in that it is reused. This allows
// it to serve as an anchor for state that needs to persist across top-level
// page navigations.
//
// TODO(ajwong): Move NavigationController ownership to the main frame
// FrameTreeNode. Possibly expose access to it from here.
//
// This object is only used on the UI thread.
class CONTENT_EXPORT FrameTree { … };

}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_FRAME_TREE_H_