src/ppapi/proxy/ppp_text_input_proxy.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 "ppapi/proxy/ppp_text_input_proxy.h"
   6
   7 #include "ppapi/c/dev/ppp_text_input_dev.h"
   8 #include "ppapi/proxy/host_dispatcher.h"
   9 #include "ppapi/proxy/ppapi_messages.h"
  10 #include "ppapi/shared_impl/proxy_lock.h"
  11
  12 namespace ppapi {
  13 namespace proxy {
  14
  15 namespace {
  16
  17 #if !defined(OS_NACL)
  18 void RequestSurroundingText(PP_Instance instance,
  19                             uint32_t desired_number_of_characters) {
  20   proxy::HostDispatcher* dispatcher =
  21       proxy::HostDispatcher::GetForInstance(instance);
  22   if (!dispatcher) {
  23     // The dispatcher should always be valid.
  24     NOTREACHED();
  25     return;
  26   }
  27
  28   dispatcher->Send(new PpapiMsg_PPPTextInput_RequestSurroundingText(
  29       API_ID_PPP_TEXT_INPUT, instance, desired_number_of_characters));
  30 }
  31
  32 const PPP_TextInput_Dev g_ppp_text_input_thunk = {
  33   &RequestSurroundingText
  34 };
  35 #else
  36 // The NaCl plugin doesn't need the host side interface - stub it out.
  37 static const PPP_TextInput_Dev g_ppp_text_input_thunk = {};
  38 #endif  // !defined(OS_NACL)
  39
  40 }  // namespace
  41
  42 // static
  43 const PPP_TextInput_Dev* PPP_TextInput_Proxy::GetProxyInterface() {
  44   return &g_ppp_text_input_thunk;
  45 }
  46
  47 PPP_TextInput_Proxy::PPP_TextInput_Proxy(Dispatcher* dispatcher)
  48     : InterfaceProxy(dispatcher),
  49       ppp_text_input_impl_(NULL) {
  50   if (dispatcher->IsPlugin()) {
  51     ppp_text_input_impl_ = static_cast<const PPP_TextInput_Dev*>(
  52         dispatcher->local_get_interface()(PPP_TEXTINPUT_DEV_INTERFACE));
  53   }
  54 }
  55
  56 PPP_TextInput_Proxy::~PPP_TextInput_Proxy() {
  57 }
  58
  59 bool PPP_TextInput_Proxy::OnMessageReceived(const IPC::Message& msg) {
  60   if (!dispatcher()->IsPlugin())
  61     return false;
  62
  63   bool handled = true;
  64   IPC_BEGIN_MESSAGE_MAP(PPP_TextInput_Proxy, msg)
  65     IPC_MESSAGE_HANDLER(PpapiMsg_PPPTextInput_RequestSurroundingText,
  66                         OnMsgRequestSurroundingText)
  67     IPC_MESSAGE_UNHANDLED(handled = false)
  68   IPC_END_MESSAGE_MAP()
  69   return handled;
  70 }
  71
  72 void PPP_TextInput_Proxy::OnMsgRequestSurroundingText(
  73     PP_Instance instance, uint32_t desired_number_of_characters) {
  74   if (ppp_text_input_impl_) {
  75     CallWhileUnlocked(ppp_text_input_impl_->RequestSurroundingText,
  76                       instance, desired_number_of_characters);
  77   }
  78 }
  79
  80 }  // namespace proxy
  81 }  // namespace ppapi