blob: 31a54f50d6ef13ab4c35904632fdf848f562b2e2 [file] [log] [blame]
// Copyright 2019 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 <stdint.h>
#include <map>
#include <string>
#include "base/macros.h"
#include "content/public/browser/render_process_host_observer.h"
#include "extensions/common/mojo/guest_view.mojom.h"
namespace content {
class NavigationHandle;
class NavigationThrottle;
class RenderFrameHost;
class RenderProcessHost;
class WebContents;
} // namespace content
namespace extensions {
class MimeHandlerViewGuest;
// Helper class for attaching a MimeHandlerViewGuest to its outer WebContents.
// This class is exclusively used for frame-based MimeHandlerView. There is one
// instance of this class per process.
class MimeHandlerViewAttachHelper : content::RenderProcessHostObserver {
// Returns the unique helper for process identified with |render_process_id|.
static MimeHandlerViewAttachHelper* Get(int render_process_id);
// During attaching guest to embedder WebContentses the corresponding plugin
// frame might be navigated to "about:blank" first. During this time all
// navigations for the same FrameTreeNode must be canceled.
static std::unique_ptr<content::NavigationThrottle> MaybeCreateThrottle(
content::NavigationHandle* navigation_handle);
~MimeHandlerViewAttachHelper() override;
// content::RenderProcessHostObserver overrides.
void RenderProcessHostDestroyed(content::RenderProcessHost* host) override;
// Starts the attaching process for the |guest_view|'s WebContents to its
// outer WebContents (embedder WebContents) on the UI thread.
void AttachToOuterWebContents(MimeHandlerViewGuest* guest_view,
int32_t embedder_render_process_id,
int32_t plugin_frame_routing_id,
int32_t element_instance_id,
bool is_full_page_plugin);
class FrameNavigationHelper;
friend class MimeHandlerViewAttachHelper::FrameNavigationHelper;
MimeHandlerViewAttachHelper(content::RenderProcessHost* render_process_host);
// Called by a FrameNavigationHelper on UI thread to notify the message filter
// whether or not it should proceed with attaching a guest. If the
// RenderFrameHost associated with |plugin_frame_routing_id| in the process
// identified by |render_process_id_| is not found, the MimeHandlerViewGuest
// associated with |element_instance_id| will be destroyed and deleted.
void ResumeAttachOrDestroy(int32_t element_instance_id,
int32_t plugin_frame_routing_id);
std::map<int32_t, std::unique_ptr<FrameNavigationHelper>>
content::RenderProcessHost* const render_process_host_;
base::WeakPtrFactory<MimeHandlerViewAttachHelper> weak_factory_;
} // namespace extensions