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