blob: 016b764bdf7dfe457dda1567b792ebdc0afbc96b [file] [log] [blame]
// Copyright 2017 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.
#include <map>
#include <memory>
#include "base/macros.h"
#include "content/common/frame.mojom.h"
#include "content/public/browser/web_contents_observer.h"
#include "mojo/public/cpp/bindings/pending_associated_remote.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
namespace content {
class RenderFrameHost;
// Allows intercepting calls to mojom::FrameHost (e.g. BeginNavigation) just
// before they are dispatched to the implementation. This enables unit/browser
// tests to scrutinize/alter the parameters, or simulate race conditions by
// triggering other calls just before dispatching the original call.
// NOTE: DidCommitProvisionalLoad is handled separately, because it is in a
// transient state right now, and is soon going away from mojom::FrameHost.
class FrameHostInterceptor : public WebContentsObserver {
// Constructs an instance that will intercept FrameHost calls in any frame of
// the |web_contents| while the instance is in scope.
explicit FrameHostInterceptor(WebContents* web_contents);
~FrameHostInterceptor() override;
// Called just before BeginNavigation IPC would be dispatched to
// |render_frame_host|.
// Return false to cancel the dispatching of this message.
// Return true (and/or modify args as needed) to dispatch this message to the
// original implementation.
// By default this method returns true (e.g. doesn't do anything to the
// original messages and just forwards them to the original implementation).
virtual bool WillDispatchBeginNavigation(
RenderFrameHost* render_frame_host,
mojom::CommonNavigationParamsPtr* common_params,
mojom::BeginNavigationParamsPtr* begin_params,
mojo::PendingRemote<blink::mojom::BlobURLToken>* blob_url_token,
mojo::PendingAssociatedRemote<mojom::NavigationClient>* navigation_client,
class FrameAgent;
// WebContentsObserver:
void RenderFrameCreated(RenderFrameHost* render_frame_host) override;
void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
std::map<RenderFrameHost*, std::unique_ptr<FrameAgent>> frame_agents_;
} // namespace content