win8/viewer/metro_viewer_process_host.cc

   1 // Copyright (c) 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 "win8/viewer/metro_viewer_process_host.h"
   6
   7 #include <shlobj.h>
   8
   9 #include "base/command_line.h"
  10 #include "base/file_util.h"
  11 #include "base/files/file_path.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "base/process/process.h"
  14 #include "base/strings/string16.h"
  15 #include "base/synchronization/waitable_event.h"
  16 #include "base/time/time.h"
  17 #include "base/win/scoped_comptr.h"
  18 #include "ipc/ipc_message.h"
  19 #include "ipc/ipc_message_macros.h"
  20 #include "ui/aura/remote_root_window_host_win.h"
  21 #include "ui/metro_viewer/metro_viewer_messages.h"
  22 #include "win8/viewer/metro_viewer_constants.h"
  23
  24 namespace win8 {
  25
  26 MetroViewerProcessHost::InternalMessageFilter::InternalMessageFilter(
  27     MetroViewerProcessHost* owner) : owner_(owner) {
  28 }
  29
  30 void MetroViewerProcessHost::InternalMessageFilter::OnChannelConnected(
  31     int32 /* peer_pid */) {
  32   owner_->NotifyChannelConnected();
  33 }
  34
  35 MetroViewerProcessHost::MetroViewerProcessHost(
  36     base::SingleThreadTaskRunner* ipc_task_runner) {
  37
  38   channel_.reset(new IPC::ChannelProxy(
  39       kMetroViewerIPCChannelName,
  40       IPC::Channel::MODE_NAMED_SERVER,
  41       this,
  42       ipc_task_runner));
  43 }
  44
  45 MetroViewerProcessHost::~MetroViewerProcessHost() {
  46 }
  47
  48 base::ProcessId MetroViewerProcessHost::GetViewerProcessId() {
  49   if (channel_)
  50     return channel_->peer_pid();
  51   return base::kNullProcessId;
  52 }
  53
  54 bool MetroViewerProcessHost::LaunchViewerAndWaitForConnection(
  55     const base::string16& app_user_model_id) {
  56   DCHECK_EQ(base::kNullProcessId, channel_->peer_pid());
  57
  58   channel_connected_event_.reset(new base::WaitableEvent(false, false));
  59
  60   scoped_refptr<InternalMessageFilter> message_filter(
  61       new InternalMessageFilter(this));
  62   channel_->AddFilter(message_filter);
  63
  64   base::win::ScopedComPtr<IApplicationActivationManager> activator;
  65   HRESULT hr = activator.CreateInstance(CLSID_ApplicationActivationManager);
  66   if (SUCCEEDED(hr)) {
  67     DWORD pid = 0;
  68     hr = activator->ActivateApplication(
  69         app_user_model_id.c_str(), L"open", AO_NONE, &pid);
  70   }
  71
  72   LOG_IF(ERROR, FAILED(hr)) << "Tried and failed to launch Metro Chrome. "
  73                             << "hr=" << std::hex << hr;
  74
  75   // Having launched the viewer process, now we wait for it to connect.
  76   bool success =
  77       channel_connected_event_->TimedWait(base::TimeDelta::FromSeconds(60));
  78   channel_connected_event_.reset();
  79
  80   // |message_filter| is only used to signal |channel_connected_event_| above
  81   // and can thus be removed after |channel_connected_event_| is no longer
  82   // waiting.
  83   channel_->RemoveFilter(message_filter);
  84   return success;
  85 }
  86
  87 bool MetroViewerProcessHost::Send(IPC::Message* msg) {
  88   return channel_->Send(msg);
  89 }
  90
  91 bool MetroViewerProcessHost::OnMessageReceived(
  92     const IPC::Message& message) {
  93   DCHECK(CalledOnValidThread());
  94   bool handled = true;
  95   IPC_BEGIN_MESSAGE_MAP(MetroViewerProcessHost, message)
  96     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_SetTargetSurface, OnSetTargetSurface)
  97     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_OpenURL, OnOpenURL)
  98     IPC_MESSAGE_HANDLER(MetroViewerHostMsg_SearchRequest, OnHandleSearchRequest)
  99     IPC_MESSAGE_UNHANDLED(handled = false)
 100   IPC_END_MESSAGE_MAP()
 101   return handled ? true :
 102       aura::RemoteRootWindowHostWin::Instance()->OnMessageReceived(message);
 103 }
 104
 105 void MetroViewerProcessHost::NotifyChannelConnected() {
 106   if (channel_connected_event_)
 107     channel_connected_event_->Signal();
 108 }
 109
 110 }  // namespace win8