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      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
     82