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// Copyright 2013 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 "apps/app_window_contents.h"
#include "apps/ui/native_app_window.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/common/extensions/api/app_window.h"
#include "chrome/common/extensions/extension_messages.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/resource_dispatcher_host.h"
#include "content/public/browser/site_instance.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/renderer_preferences.h"
namespace app_window = extensions::api::app_window;
namespace apps {
AppWindowContentsImpl::AppWindowContentsImpl(AppWindow* host) : host_(host) {}
AppWindowContentsImpl::~AppWindowContentsImpl() {}
void AppWindowContentsImpl::Initialize(content::BrowserContext* context,
const GURL& url) {
url_ = url;
extension_function_dispatcher_.reset(
new ExtensionFunctionDispatcher(context, this));
web_contents_.reset(
content::WebContents::Create(content::WebContents::CreateParams(
context, content::SiteInstance::CreateForURL(context, url_))));
content::WebContentsObserver::Observe(web_contents_.get());
web_contents_->GetMutableRendererPrefs()->
browser_handles_all_top_level_requests = true;
web_contents_->GetRenderViewHost()->SyncRendererPrefs();
}
void AppWindowContentsImpl::LoadContents(int32 creator_process_id) {
// If the new view is in the same process as the creator, block the created
// RVH from loading anything until the background page has had a chance to
// do any initialization it wants. If it's a different process, the new RVH
// shouldn't communicate with the background page anyway (e.g. sandboxed).
if (web_contents_->GetRenderViewHost()->GetProcess()->GetID() ==
creator_process_id) {
SuspendRenderViewHost(web_contents_->GetRenderViewHost());
} else {
VLOG(1) << "AppWindow created in new process ("
<< web_contents_->GetRenderViewHost()->GetProcess()->GetID()
<< ") != creator (" << creator_process_id << "). Routing disabled.";
}
// TODO(jeremya): there's a bug where navigating a web contents to an
// extension URL causes it to create a new RVH and discard the old (perfectly
// usable) one. To work around this, we watch for a
// NOTIFICATION_RENDER_VIEW_HOST_CHANGED message from the web contents (which
// will be sent during LoadURL) and suspend resource requests on the new RVH
// to ensure that we block the new RVH from loading anything. It should be
// okay to remove the NOTIFICATION_RENDER_VIEW_HOST_CHANGED registration once
// http://crbug.com/123007 is fixed.
registrar_.Add(this, content::NOTIFICATION_RENDER_VIEW_HOST_CHANGED,
content::Source<content::WebContents>(web_contents()));
web_contents_->GetController().LoadURL(
url_, content::Referrer(), content::PAGE_TRANSITION_LINK,
std::string());
registrar_.RemoveAll();
}
void AppWindowContentsImpl::NativeWindowChanged(
NativeAppWindow* native_app_window) {
base::ListValue args;
base::DictionaryValue* dictionary = new base::DictionaryValue();
args.Append(dictionary);
host_->GetSerializedState(dictionary);
content::RenderViewHost* rvh = web_contents_->GetRenderViewHost();
rvh->Send(new ExtensionMsg_MessageInvoke(rvh->GetRoutingID(),
host_->extension_id(),
"app.window",
"updateAppWindowProperties",
args,
false));
}
void AppWindowContentsImpl::NativeWindowClosed() {
content::RenderViewHost* rvh = web_contents_->GetRenderViewHost();
rvh->Send(new ExtensionMsg_AppWindowClosed(rvh->GetRoutingID()));
}
content::WebContents* AppWindowContentsImpl::GetWebContents() const {
return web_contents_.get();
}
void AppWindowContentsImpl::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
switch (type) {
case content::NOTIFICATION_RENDER_VIEW_HOST_CHANGED: {
// TODO(jeremya): once http://crbug.com/123007 is fixed, we'll no longer
// need to suspend resource requests here (the call in the constructor
// should be enough).
content::Details<std::pair<content::RenderViewHost*,
content::RenderViewHost*> >
host_details(details);
if (host_details->first)
SuspendRenderViewHost(host_details->second);
break;
}
default:
NOTREACHED() << "Received unexpected notification";
}
}
bool AppWindowContentsImpl::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(AppWindowContentsImpl, message)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_Request, OnRequest)
IPC_MESSAGE_HANDLER(ExtensionHostMsg_UpdateDraggableRegions,
UpdateDraggableRegions)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
extensions::WindowController*
AppWindowContentsImpl::GetExtensionWindowController() const {
return NULL;
}
content::WebContents* AppWindowContentsImpl::GetAssociatedWebContents() const {
return web_contents_.get();
}
void AppWindowContentsImpl::OnRequest(
const ExtensionHostMsg_Request_Params& params) {
extension_function_dispatcher_->Dispatch(
params, web_contents_->GetRenderViewHost());
}
void AppWindowContentsImpl::UpdateDraggableRegions(
const std::vector<extensions::DraggableRegion>& regions) {
host_->UpdateDraggableRegions(regions);
}
void AppWindowContentsImpl::SuspendRenderViewHost(
content::RenderViewHost* rvh) {
DCHECK(rvh);
content::BrowserThread::PostTask(
content::BrowserThread::IO, FROM_HERE,
base::Bind(&content::ResourceDispatcherHost::BlockRequestsForRoute,
base::Unretained(content::ResourceDispatcherHost::Get()),
rvh->GetProcess()->GetID(), rvh->GetRoutingID()));
}
} // namespace apps
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