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      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 "extensions/browser/app_window/app_window_contents.h"
      6 
      7 #include <string>
      8 #include <utility>
      9 
     10 #include "content/public/browser/browser_context.h"
     11 #include "content/public/browser/browser_thread.h"
     12 #include "content/public/browser/render_process_host.h"
     13 #include "content/public/browser/render_view_host.h"
     14 #include "content/public/browser/resource_dispatcher_host.h"
     15 #include "content/public/browser/site_instance.h"
     16 #include "content/public/browser/web_contents.h"
     17 #include "content/public/common/renderer_preferences.h"
     18 #include "extensions/browser/app_window/native_app_window.h"
     19 #include "extensions/common/extension_messages.h"
     20 
     21 namespace extensions {
     22 
     23 AppWindowContentsImpl::AppWindowContentsImpl(AppWindow* host) : host_(host) {}
     24 
     25 AppWindowContentsImpl::~AppWindowContentsImpl() {}
     26 
     27 void AppWindowContentsImpl::Initialize(content::BrowserContext* context,
     28                                        const GURL& url) {
     29   url_ = url;
     30 
     31   extension_function_dispatcher_.reset(
     32       new ExtensionFunctionDispatcher(context, this));
     33 
     34   web_contents_.reset(
     35       content::WebContents::Create(content::WebContents::CreateParams(
     36           context, content::SiteInstance::CreateForURL(context, url_))));
     37 
     38   Observe(web_contents_.get());
     39   web_contents_->GetMutableRendererPrefs()->
     40       browser_handles_all_top_level_requests = true;
     41   web_contents_->GetRenderViewHost()->SyncRendererPrefs();
     42 }
     43 
     44 void AppWindowContentsImpl::LoadContents(int32 creator_process_id) {
     45   // If the new view is in the same process as the creator, block the created
     46   // RVH from loading anything until the background page has had a chance to
     47   // do any initialization it wants. If it's a different process, the new RVH
     48   // shouldn't communicate with the background page anyway (e.g. sandboxed).
     49   if (web_contents_->GetRenderViewHost()->GetProcess()->GetID() ==
     50       creator_process_id) {
     51     SuspendRenderViewHost(web_contents_->GetRenderViewHost());
     52   } else {
     53     VLOG(1) << "AppWindow created in new process ("
     54             << web_contents_->GetRenderViewHost()->GetProcess()->GetID()
     55             << ") != creator (" << creator_process_id << "). Routing disabled.";
     56   }
     57 
     58   web_contents_->GetController().LoadURL(
     59       url_, content::Referrer(), ui::PAGE_TRANSITION_LINK,
     60       std::string());
     61 }
     62 
     63 void AppWindowContentsImpl::NativeWindowChanged(
     64     NativeAppWindow* native_app_window) {
     65   base::ListValue args;
     66   base::DictionaryValue* dictionary = new base::DictionaryValue();
     67   args.Append(dictionary);
     68   host_->GetSerializedState(dictionary);
     69 
     70   content::RenderViewHost* rvh = web_contents_->GetRenderViewHost();
     71   rvh->Send(new ExtensionMsg_MessageInvoke(rvh->GetRoutingID(),
     72                                            host_->extension_id(),
     73                                            "app.window",
     74                                            "updateAppWindowProperties",
     75                                            args,
     76                                            false));
     77 }
     78 
     79 void AppWindowContentsImpl::NativeWindowClosed() {
     80   content::RenderViewHost* rvh = web_contents_->GetRenderViewHost();
     81   rvh->Send(new ExtensionMsg_AppWindowClosed(rvh->GetRoutingID()));
     82 }
     83 
     84 void AppWindowContentsImpl::DispatchWindowShownForTests() const {
     85   base::ListValue args;
     86   content::RenderViewHost* rvh = web_contents_->GetRenderViewHost();
     87   rvh->Send(new ExtensionMsg_MessageInvoke(rvh->GetRoutingID(),
     88                                            host_->extension_id(),
     89                                            "app.window",
     90                                            "appWindowShownForTests",
     91                                            args,
     92                                            false));
     93 }
     94 
     95 content::WebContents* AppWindowContentsImpl::GetWebContents() const {
     96   return web_contents_.get();
     97 }
     98 
     99 bool AppWindowContentsImpl::OnMessageReceived(const IPC::Message& message) {
    100   bool handled = true;
    101   IPC_BEGIN_MESSAGE_MAP(AppWindowContentsImpl, message)
    102     IPC_MESSAGE_HANDLER(ExtensionHostMsg_Request, OnRequest)
    103     IPC_MESSAGE_HANDLER(ExtensionHostMsg_UpdateDraggableRegions,
    104                         UpdateDraggableRegions)
    105     IPC_MESSAGE_UNHANDLED(handled = false)
    106   IPC_END_MESSAGE_MAP()
    107   return handled;
    108 }
    109 
    110 WindowController* AppWindowContentsImpl::GetExtensionWindowController() const {
    111   return NULL;
    112 }
    113 
    114 content::WebContents* AppWindowContentsImpl::GetAssociatedWebContents() const {
    115   return web_contents_.get();
    116 }
    117 
    118 void AppWindowContentsImpl::OnRequest(
    119     const ExtensionHostMsg_Request_Params& params) {
    120   extension_function_dispatcher_->Dispatch(
    121       params, web_contents_->GetRenderViewHost());
    122 }
    123 
    124 void AppWindowContentsImpl::UpdateDraggableRegions(
    125     const std::vector<DraggableRegion>& regions) {
    126   host_->UpdateDraggableRegions(regions);
    127 }
    128 
    129 void AppWindowContentsImpl::SuspendRenderViewHost(
    130     content::RenderViewHost* rvh) {
    131   DCHECK(rvh);
    132   content::BrowserThread::PostTask(
    133       content::BrowserThread::IO, FROM_HERE,
    134       base::Bind(&content::ResourceDispatcherHost::BlockRequestsForRoute,
    135                  base::Unretained(content::ResourceDispatcherHost::Get()),
    136                  rvh->GetProcess()->GetID(), rvh->GetRoutingID()));
    137 }
    138 
    139 }  // namespace extensions
    140