content/utility/utility_thread_impl.cc

   1 // Copyright (c) 2012 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 "content/utility/utility_thread_impl.h"
   6
   7 #include <stddef.h>
   8
   9 #include "base/command_line.h"
  10 #include "base/files/file_path.h"
  11 #include "base/memory/scoped_vector.h"
  12 #include "content/common/child_process.h"
  13 #include "content/common/child_process_messages.h"
  14 #include "content/common/utility_messages.h"
  15 #include "content/common/webkitplatformsupport_impl.h"
  16 #include "content/public/utility/content_utility_client.h"
  17 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
  18 #include "webkit/plugins/npapi/plugin_list.h"
  19
  20 #if defined(TOOLKIT_GTK)
  21 #include <gtk/gtk.h>
  22
  23 #include "ui/gfx/gtk_util.h"
  24 #endif
  25
  26 namespace content {
  27
  28 namespace {
  29
  30 template<typename SRC, typename DEST>
  31 void ConvertVector(const SRC& src, DEST* dest) {
  32   dest->reserve(src.size());
  33   for (typename SRC::const_iterator i = src.begin(); i != src.end(); ++i)
  34     dest->push_back(typename DEST::value_type(*i));
  35 }
  36
  37 }  // namespace
  38
  39 UtilityThreadImpl::UtilityThreadImpl()
  40     : batch_mode_(false) {
  41   ChildProcess::current()->AddRefProcess();
  42   webkit_platform_support_.reset(new WebKitPlatformSupportImpl);
  43   WebKit::initialize(webkit_platform_support_.get());
  44   GetContentClient()->utility()->UtilityThreadStarted();
  45 }
  46
  47 UtilityThreadImpl::~UtilityThreadImpl() {
  48   WebKit::shutdown();
  49 }
  50
  51 bool UtilityThreadImpl::Send(IPC::Message* msg) {
  52   return ChildThread::Send(msg);
  53 }
  54
  55 void UtilityThreadImpl::ReleaseProcessIfNeeded() {
  56   if (!batch_mode_)
  57     ChildProcess::current()->ReleaseProcess();
  58 }
  59
  60 #if defined(OS_WIN)
  61
  62 void UtilityThreadImpl::PreCacheFont(const LOGFONT& log_font) {
  63   Send(new ChildProcessHostMsg_PreCacheFont(log_font));
  64 }
  65
  66 void UtilityThreadImpl::ReleaseCachedFonts() {
  67   Send(new ChildProcessHostMsg_ReleaseCachedFonts());
  68 }
  69
  70 #endif  // OS_WIN
  71
  72
  73 bool UtilityThreadImpl::OnControlMessageReceived(const IPC::Message& msg) {
  74   if (GetContentClient()->utility()->OnMessageReceived(msg))
  75     return true;
  76
  77   bool handled = true;
  78   IPC_BEGIN_MESSAGE_MAP(UtilityThreadImpl, msg)
  79     IPC_MESSAGE_HANDLER(UtilityMsg_BatchMode_Started, OnBatchModeStarted)
  80     IPC_MESSAGE_HANDLER(UtilityMsg_BatchMode_Finished, OnBatchModeFinished)
  81 #if defined(OS_POSIX)
  82     IPC_MESSAGE_HANDLER(UtilityMsg_LoadPlugins, OnLoadPlugins)
  83 #endif  // OS_POSIX
  84     IPC_MESSAGE_UNHANDLED(handled = false)
  85   IPC_END_MESSAGE_MAP()
  86   return handled;
  87 }
  88
  89 void UtilityThreadImpl::OnBatchModeStarted() {
  90   batch_mode_ = true;
  91 }
  92
  93 void UtilityThreadImpl::OnBatchModeFinished() {
  94   ChildProcess::current()->ReleaseProcess();
  95 }
  96
  97 #if defined(OS_POSIX)
  98 void UtilityThreadImpl::OnLoadPlugins(
  99     const std::vector<base::FilePath>& plugin_paths) {
 100   webkit::npapi::PluginList* plugin_list =
 101       webkit::npapi::PluginList::Singleton();
 102
 103   // On Linux, some plugins expect the browser to have loaded glib/gtk. Do that
 104   // before attempting to call into the plugin.
 105   // g_thread_init API is deprecated since glib 2.31.0, please see release note:
 106   // http://mail.gnome.org/archives/gnome-announce-list/2011-October/msg00041.html
 107 #if defined(TOOLKIT_GTK)
 108 #if !(GLIB_CHECK_VERSION(2, 31, 0))
 109   if (!g_thread_get_initialized()) {
 110     g_thread_init(NULL);
 111   }
 112 #endif
 113   gfx::GtkInitFromCommandLine(*CommandLine::ForCurrentProcess());
 114 #endif
 115
 116   std::vector<webkit::WebPluginInfo> plugins;
 117   // TODO(bauerb): If we restart loading plug-ins, we might mess up the logic in
 118   // PluginList::ShouldLoadPlugin due to missing the previously loaded plug-ins
 119   // in |plugin_groups|.
 120   for (size_t i = 0; i < plugin_paths.size(); ++i) {
 121     webkit::WebPluginInfo plugin;
 122     if (!plugin_list->LoadPluginIntoPluginList(
 123         plugin_paths[i], &plugins, &plugin))
 124       Send(new UtilityHostMsg_LoadPluginFailed(i, plugin_paths[i]));
 125     else
 126       Send(new UtilityHostMsg_LoadedPlugin(i, plugin));
 127   }
 128
 129   ReleaseProcessIfNeeded();
 130 }
 131 #endif
 132
 133 }  // namespace content