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// Copyright (c) 2012 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 "content/browser/browser_plugin/browser_plugin_web_contents_observer.h"
#include "base/lazy_instance.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/common/browser_plugin_messages.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_widget_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
#include "ppapi/proxy/ppapi_messages.h"
namespace content {
BrowserPluginWebContentsObserver::BrowserPluginWebContentsObserver(
WebContentsImpl* web_contents)
: WebContentsObserver(web_contents),
host_(NULL),
instance_id_(0) {
registrar_.Add(this,
NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED,
Source<RenderViewHost>(
web_contents->GetRenderViewHost()));
}
BrowserPluginWebContentsObserver::~BrowserPluginWebContentsObserver() {
}
bool BrowserPluginWebContentsObserver::OnMessageReceived(
const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(BrowserPluginWebContentsObserver, message)
IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_ChannelCreated,
OnRendererPluginChannelCreated)
IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_OpenChannel,
OnOpenChannelToBrowserPlugin)
IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_GuestReady, OnGuestReady)
IPC_MESSAGE_HANDLER(BrowserPluginHostMsg_ResizeGuest, OnResizeGuest)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void BrowserPluginWebContentsObserver::OnGuestReady() {
// We only care about handling this message on guests.
if (!host())
return;
// The renderer is now ready to receive ppapi messages.
// Let's tell it create a channel with the embedder/host.
BrowserPluginMsg_CreateChannel* msg =
new BrowserPluginMsg_CreateChannel(
host()->GetRenderProcessHost()->GetHandle(),
host()->GetRenderProcessHost()->GetID());
msg->set_routing_id(web_contents()->GetRenderViewHost()->GetRoutingID());
// TODO(fsamuel): If we aren't able to successfully send this message
// to the guest then that probably means it crashed. Is there anything
// we can do that's cleaner than failing a check?
CHECK(Send(msg));
}
void BrowserPluginWebContentsObserver::OnResizeGuest(
int width, int height) {
// Tell the RenderWidgetHostView to adjust its size.
web_contents()->GetRenderViewHost()->GetView()->SetSize(
gfx::Size(width, height));
}
void BrowserPluginWebContentsObserver::OnOpenChannelToBrowserPlugin(
int instance_id,
long long frame_id,
const std::string& src,
const gfx::Size& size) {
BrowserContext* browser_context =
web_contents()->GetRenderViewHost()->GetProcess()->GetBrowserContext();
DCHECK(browser_context);
GURL url(src);
SiteInstance* site_instance =
SiteInstance::CreateForURL(
browser_context, url);
WebContentsImpl* guest_web_contents =
static_cast<WebContentsImpl*>(
WebContents::Create(
browser_context,
site_instance,
MSG_ROUTING_NONE,
NULL, // base WebContents
NULL // session storage namespace
));
// TODO(fsamuel): Set the WebContentsDelegate here.
RenderViewHostImpl* guest_render_view_host =
static_cast<RenderViewHostImpl*>(
guest_web_contents->GetRenderViewHost());
// We need to make sure that the RenderViewHost knows that it's
// hosting a guest RenderView so that it informs the RenderView
// on a ViewMsg_New. Guest RenderViews will avoid compositing
// until a guest-to-host channel has been initialized.
guest_render_view_host->set_guest(true);
guest_web_contents->GetController().LoadURL(
url,
Referrer(),
PAGE_TRANSITION_HOME_PAGE,
std::string());
guest_render_view_host->GetView()->SetSize(size);
BrowserPluginWebContentsObserver* guest_observer =
guest_web_contents->browser_plugin_web_contents_observer();
guest_observer->set_host(static_cast<WebContentsImpl*>(web_contents()));
guest_observer->set_instance_id(instance_id);
AddGuest(guest_web_contents, frame_id);
}
void BrowserPluginWebContentsObserver::OnRendererPluginChannelCreated(
const IPC::ChannelHandle& channel_handle) {
DCHECK(host());
// Prepare the handle to send to the renderer.
base::ProcessHandle plugin_process =
web_contents()->GetRenderProcessHost()->GetHandle();
#if defined(OS_WIN)
base::ProcessHandle renderer_process =
host()->GetRenderProcessHost()->GetHandle();
int renderer_id = host()->GetRenderProcessHost()->GetID();
base::ProcessHandle renderers_plugin_handle = NULL;
::DuplicateHandle(::GetCurrentProcess(), plugin_process,
renderer_process, &renderers_plugin_handle,
0, FALSE, DUPLICATE_SAME_ACCESS);
#elif defined(OS_POSIX)
// Don't need to duplicate anything on POSIX since it's just a PID.
base::ProcessHandle renderers_plugin_handle = plugin_process;
#endif
// Tell the BrowserPLuginPlaceholder in the host that we're done
// and that it can begin using the guest renderer.
host()->GetRenderProcessHost()->Send(
new BrowserPluginMsg_GuestReady_ACK(
host()->GetRenderViewHost()->GetRoutingID(),
instance_id(),
renderers_plugin_handle,
channel_handle));
}
void BrowserPluginWebContentsObserver::AddGuest(WebContentsImpl* guest,
int64 frame_id) {
guests_[guest] = frame_id;
}
void BrowserPluginWebContentsObserver::RemoveGuest(WebContentsImpl* guest) {
guests_.erase(guest);
}
void BrowserPluginWebContentsObserver::DestroyGuests() {
for (GuestMap::const_iterator it = guests_.begin();
it != guests_.end(); ++it) {
const WebContentsImpl* web_contents = it->first;
delete web_contents;
}
guests_.clear();
}
void BrowserPluginWebContentsObserver::DidCommitProvisionalLoadForFrame(
int64 frame_id,
bool is_main_frame,
const GURL& url,
PageTransition transition_type) {
typedef std::set<WebContentsImpl*> GuestSet;
GuestSet guests_to_delete;
for (GuestMap::const_iterator it = guests_.begin();
it != guests_.end(); ++it) {
WebContentsImpl* web_contents = it->first;
if (it->second == frame_id) {
guests_to_delete.insert(web_contents);
}
}
for (GuestSet::const_iterator it = guests_to_delete.begin();
it != guests_to_delete.end(); ++it) {
delete *it;
guests_.erase(*it);
}
}
void BrowserPluginWebContentsObserver::RenderViewDeleted(
RenderViewHost* render_view_host) {
DestroyGuests();
}
void BrowserPluginWebContentsObserver::RenderViewGone(
base::TerminationStatus status) {
DestroyGuests();
}
void BrowserPluginWebContentsObserver::WebContentsDestroyed(
WebContents* web_contents) {
DestroyGuests();
}
void BrowserPluginWebContentsObserver::Observe(
int type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(type == NOTIFICATION_RENDER_WIDGET_VISIBILITY_CHANGED);
bool visible = *Details<bool>(details).ptr();
// If the host is hidden we need to hide the guests as well.
for (GuestMap::const_iterator it = guests_.begin();
it != guests_.end(); ++it) {
WebContentsImpl* web_contents = it->first;
if (visible)
web_contents->ShowContents();
else
web_contents->HideContents();
}
}
} // namespace content
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