apps/app_window_contents.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "apps/app_window_contents.h"
   6
   7 #include "apps/ui/native_app_window.h"
   8 #include "chrome/browser/chrome_notification_types.h"
   9 #include "chrome/common/extensions/api/app_window.h"
  10 #include "content/public/browser/browser_context.h"
  11 #include "content/public/browser/browser_thread.h"
  12 #include "content/public/browser/notification_details.h"
  13 #include "content/public/browser/notification_source.h"
  14 #include "content/public/browser/render_process_host.h"
  15 #include "content/public/browser/render_view_host.h"
  16 #include "content/public/browser/resource_dispatcher_host.h"
  17 #include "content/public/browser/site_instance.h"
  18 #include "content/public/browser/web_contents.h"
  19 #include "content/public/common/renderer_preferences.h"
  20 #include "extensions/common/extension_messages.h"
  21
  22 namespace app_window = extensions::api::app_window;
  23
  24 namespace apps {
  25
  26 AppWindowContentsImpl::AppWindowContentsImpl(AppWindow* host) : host_(host) {}
  27
  28 AppWindowContentsImpl::~AppWindowContentsImpl() {}
  29
  30 void AppWindowContentsImpl::Initialize(content::BrowserContext* context,
  31                                        const GURL& url) {
  32   url_ = url;
  33
  34   extension_function_dispatcher_.reset(
  35       new extensions::ExtensionFunctionDispatcher(context, this));
  36
  37   web_contents_.reset(
  38       content::WebContents::Create(content::WebContents::CreateParams(
  39           context, content::SiteInstance::CreateForURL(context, url_))));
  40
  41   content::WebContentsObserver::Observe(web_contents_.get());
  42   web_contents_->GetMutableRendererPrefs()->
  43       browser_handles_all_top_level_requests = true;
  44   web_contents_->GetRenderViewHost()->SyncRendererPrefs();
  45 }
  46
  47 void AppWindowContentsImpl::LoadContents(int32 creator_process_id) {
  48   // If the new view is in the same process as the creator, block the created
  49   // RVH from loading anything until the background page has had a chance to
  50   // do any initialization it wants. If it's a different process, the new RVH
  51   // shouldn't communicate with the background page anyway (e.g. sandboxed).
  52   if (web_contents_->GetRenderViewHost()->GetProcess()->GetID() ==
  53       creator_process_id) {
  54     SuspendRenderViewHost(web_contents_->GetRenderViewHost());
  55   } else {
  56     VLOG(1) << "AppWindow created in new process ("
  57             << web_contents_->GetRenderViewHost()->GetProcess()->GetID()
  58             << ") != creator (" << creator_process_id << "). Routing disabled.";
  59   }
  60
  61   // TODO(jeremya): there's a bug where navigating a web contents to an
  62   // extension URL causes it to create a new RVH and discard the old (perfectly
  63   // usable) one. To work around this, we watch for a
  64   // NOTIFICATION_RENDER_VIEW_HOST_CHANGED message from the web contents (which
  65   // will be sent during LoadURL) and suspend resource requests on the new RVH
  66   // to ensure that we block the new RVH from loading anything. It should be
  67   // okay to remove the NOTIFICATION_RENDER_VIEW_HOST_CHANGED registration once
  68   // http://crbug.com/123007 is fixed.
  69   registrar_.Add(this, content::NOTIFICATION_RENDER_VIEW_HOST_CHANGED,
  70                  content::Source<content::WebContents>(web_contents()));
  71   web_contents_->GetController().LoadURL(
  72       url_, content::Referrer(), content::PAGE_TRANSITION_LINK,
  73       std::string());
  74   registrar_.RemoveAll();
  75 }
  76
  77 void AppWindowContentsImpl::NativeWindowChanged(
  78     NativeAppWindow* native_app_window) {
  79   base::ListValue args;
  80   base::DictionaryValue* dictionary = new base::DictionaryValue();
  81   args.Append(dictionary);
  82   host_->GetSerializedState(dictionary);
  83
  84   content::RenderViewHost* rvh = web_contents_->GetRenderViewHost();
  85   rvh->Send(new ExtensionMsg_MessageInvoke(rvh->GetRoutingID(),
  86                                            host_->extension_id(),
  87                                            "app.window",
  88                                            "updateAppWindowProperties",
  89                                            args,
  90                                            false));
  91 }
  92
  93 void AppWindowContentsImpl::NativeWindowClosed() {
  94   content::RenderViewHost* rvh = web_contents_->GetRenderViewHost();
  95   rvh->Send(new ExtensionMsg_AppWindowClosed(rvh->GetRoutingID()));
  96 }
  97
  98 content::WebContents* AppWindowContentsImpl::GetWebContents() const {
  99   return web_contents_.get();
 100 }
 101
 102 void AppWindowContentsImpl::Observe(
 103     int type,
 104     const content::NotificationSource& source,
 105     const content::NotificationDetails& details) {
 106   switch (type) {
 107     case content::NOTIFICATION_RENDER_VIEW_HOST_CHANGED: {
 108       // TODO(jeremya): once http://crbug.com/123007 is fixed, we'll no longer
 109       // need to suspend resource requests here (the call in the constructor
 110       // should be enough).
 111       content::Details<std::pair<content::RenderViewHost*,
 112                                  content::RenderViewHost*> >
 113           host_details(details);
 114       if (host_details->first)
 115         SuspendRenderViewHost(host_details->second);
 116       break;
 117     }
 118     default:
 119       NOTREACHED() << "Received unexpected notification";
 120   }
 121 }
 122
 123 bool AppWindowContentsImpl::OnMessageReceived(const IPC::Message& message) {
 124   bool handled = true;
 125   IPC_BEGIN_MESSAGE_MAP(AppWindowContentsImpl, message)
 126     IPC_MESSAGE_HANDLER(ExtensionHostMsg_Request, OnRequest)
 127     IPC_MESSAGE_HANDLER(ExtensionHostMsg_UpdateDraggableRegions,
 128                         UpdateDraggableRegions)
 129     IPC_MESSAGE_UNHANDLED(handled = false)
 130   IPC_END_MESSAGE_MAP()
 131   return handled;
 132 }
 133
 134 extensions::WindowController*
 135 AppWindowContentsImpl::GetExtensionWindowController() const {
 136   return NULL;
 137 }
 138
 139 content::WebContents* AppWindowContentsImpl::GetAssociatedWebContents() const {
 140   return web_contents_.get();
 141 }
 142
 143 void AppWindowContentsImpl::OnRequest(
 144     const ExtensionHostMsg_Request_Params& params) {
 145   extension_function_dispatcher_->Dispatch(
 146       params, web_contents_->GetRenderViewHost());
 147 }
 148
 149 void AppWindowContentsImpl::UpdateDraggableRegions(
 150     const std::vector<extensions::DraggableRegion>& regions) {
 151   host_->UpdateDraggableRegions(regions);
 152 }
 153
 154 void AppWindowContentsImpl::SuspendRenderViewHost(
 155     content::RenderViewHost* rvh) {
 156   DCHECK(rvh);
 157   content::BrowserThread::PostTask(
 158       content::BrowserThread::IO, FROM_HERE,
 159       base::Bind(&content::ResourceDispatcherHost::BlockRequestsForRoute,
 160                  base::Unretained(content::ResourceDispatcherHost::Get()),
 161                  rvh->GetProcess()->GetID(), rvh->GetRoutingID()));
 162 }
 163
 164 }  // namespace apps