frame_tree_node.h | Explore in Territory

// 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_NODE_H_
#define CONTENT_BROWSER_RENDERER_HOST_FRAME_TREE_NODE_H_

#include <stddef.h>

#include <memory>
#include <optional>
#include <string>
#include <utility>

#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/safe_ref.h"
#include "base/memory/scoped_refptr.h"
#include "base/observer_list.h"
#include "base/task/cancelable_task_tracker.h"
#include "base/time/time.h"
#include "content/browser/renderer_host/navigator.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/renderer_host/render_frame_host_manager.h"
#include "content/browser/renderer_host/render_frame_host_owner.h"
#include "content/common/content_export.h"
#include "content/public/browser/frame_type.h"
#include "content/public/browser/navigation_discard_reason.h"
#include "services/network/public/mojom/content_security_policy.mojom-forward.h"
#include "services/network/public/mojom/referrer_policy.mojom-forward.h"
#include "third_party/blink/public/common/frame/frame_owner_element_type.h"
#include "third_party/blink/public/common/frame/frame_policy.h"
#include "third_party/blink/public/mojom/frame/frame_owner_properties.mojom.h"
#include "third_party/blink/public/mojom/frame/frame_replication_state.mojom-forward.h"
#include "third_party/blink/public/mojom/frame/tree_scope_type.mojom.h"
#include "third_party/blink/public/mojom/frame/user_activation_update_types.mojom-forward.h"
#include "third_party/blink/public/mojom/webauthn/virtual_authenticator.mojom-forward.h"
#include "url/gurl.h"
#include "url/origin.h"

namespace content {

class NavigationRequest;
class NavigationEntryImpl;
class FrameTree;

// When a page contains iframes, its renderer process maintains a tree structure
// of those frames. We are mirroring this tree in the browser process. This
// class represents a node in this tree and is a wrapper for all objects that
// are frame-specific (as opposed to page-specific).
//
// Each FrameTreeNode has a current RenderFrameHost, which can change over
// time as the frame is navigated. Any immediate subframes of the current
// document are tracked using FrameTreeNodes owned by the current
// RenderFrameHost, rather than as children of FrameTreeNode itself. This
// allows subframe FrameTreeNodes to stay alive while a RenderFrameHost is
// still alive - for example while pending deletion, after a new current
// RenderFrameHost has replaced it.
class CONTENT_EXPORT FrameTreeNode : public RenderFrameHostOwner { … };

}  // namespace content

#endif  // CONTENT_BROWSER_RENDERER_HOST_FRAME_TREE_NODE_H_
chromium/content/browser/renderer_host/frame_tree_node.h
