ppapi/proxy/ppp_input_event_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_input_event_proxy.h"
   6
   7 #include "ppapi/c/ppp_input_event.h"
   8 #include "ppapi/proxy/host_dispatcher.h"
   9 #include "ppapi/proxy/plugin_dispatcher.h"
  10 #include "ppapi/proxy/ppapi_messages.h"
  11 #include "ppapi/shared_impl/ppb_input_event_shared.h"
  12 #include "ppapi/thunk/enter.h"
  13 #include "ppapi/thunk/ppb_input_event_api.h"
  14
  15 using ppapi::thunk::EnterResourceNoLock;
  16 using ppapi::thunk::PPB_InputEvent_API;
  17
  18 namespace ppapi {
  19 namespace proxy {
  20
  21 namespace {
  22
  23 #if !defined(OS_NACL)
  24 PP_Bool HandleInputEvent(PP_Instance instance, PP_Resource input_event) {
  25   EnterResourceNoLock<PPB_InputEvent_API> enter(input_event, false);
  26   if (enter.failed()) {
  27     NOTREACHED();
  28     return PP_FALSE;
  29   }
  30   const InputEventData& data = enter.object()->GetInputEventData();
  31   HostDispatcher* dispatcher = HostDispatcher::GetForInstance(instance);
  32   if (!dispatcher) {
  33     NOTREACHED();
  34     return PP_FALSE;
  35   }
  36
  37   // Need to send different messages depending on whether filtering is needed.
  38   PP_Bool result = PP_FALSE;
  39   if (data.is_filtered) {
  40     dispatcher->Send(new PpapiMsg_PPPInputEvent_HandleFilteredInputEvent(
  41         API_ID_PPP_INPUT_EVENT, instance, data, &result));
  42   } else {
  43     dispatcher->Send(new PpapiMsg_PPPInputEvent_HandleInputEvent(
  44         API_ID_PPP_INPUT_EVENT, instance, data));
  45   }
  46   return result;
  47 }
  48
  49 static const PPP_InputEvent input_event_interface = {
  50   &HandleInputEvent
  51 };
  52 #else
  53 // The NaCl plugin doesn't need the host side interface - stub it out.
  54 static const PPP_InputEvent input_event_interface = {};
  55 #endif  // !defined(OS_NACL)
  56
  57 InterfaceProxy* CreateInputEventProxy(Dispatcher* dispatcher) {
  58   return new PPP_InputEvent_Proxy(dispatcher);
  59 }
  60
  61 }  // namespace
  62
  63 PPP_InputEvent_Proxy::PPP_InputEvent_Proxy(Dispatcher* dispatcher)
  64     : InterfaceProxy(dispatcher),
  65       ppp_input_event_impl_(NULL) {
  66   if (dispatcher->IsPlugin()) {
  67     ppp_input_event_impl_ = static_cast<const PPP_InputEvent*>(
  68         dispatcher->local_get_interface()(PPP_INPUT_EVENT_INTERFACE));
  69   }
  70 }
  71
  72 PPP_InputEvent_Proxy::~PPP_InputEvent_Proxy() {
  73 }
  74
  75 // static
  76 const InterfaceProxy::Info* PPP_InputEvent_Proxy::GetInfo() {
  77   static const Info info = {
  78     &input_event_interface,
  79     PPP_INPUT_EVENT_INTERFACE,
  80     API_ID_PPP_INPUT_EVENT,
  81     false,
  82     &CreateInputEventProxy,
  83   };
  84   return &info;
  85 }
  86
  87 bool PPP_InputEvent_Proxy::OnMessageReceived(const IPC::Message& msg) {
  88   if (!dispatcher()->IsPlugin())
  89     return false;
  90
  91   bool handled = true;
  92   IPC_BEGIN_MESSAGE_MAP(PPP_InputEvent_Proxy, msg)
  93     IPC_MESSAGE_HANDLER(PpapiMsg_PPPInputEvent_HandleInputEvent,
  94                         OnMsgHandleInputEvent)
  95     IPC_MESSAGE_HANDLER(PpapiMsg_PPPInputEvent_HandleFilteredInputEvent,
  96                         OnMsgHandleFilteredInputEvent)
  97     IPC_MESSAGE_UNHANDLED(handled = false)
  98   IPC_END_MESSAGE_MAP()
  99   return handled;
 100 }
 101
 102 void PPP_InputEvent_Proxy::OnMsgHandleInputEvent(PP_Instance instance,
 103                                                  const InputEventData& data) {
 104   scoped_refptr<PPB_InputEvent_Shared> resource(new PPB_InputEvent_Shared(
 105       OBJECT_IS_PROXY, instance, data));
 106   CallWhileUnlocked(ppp_input_event_impl_->HandleInputEvent,
 107                     instance,
 108                     resource->pp_resource());
 109 }
 110
 111 void PPP_InputEvent_Proxy::OnMsgHandleFilteredInputEvent(
 112     PP_Instance instance,
 113     const InputEventData& data,
 114     PP_Bool* result) {
 115   scoped_refptr<PPB_InputEvent_Shared> resource(new PPB_InputEvent_Shared(
 116       OBJECT_IS_PROXY, instance, data));
 117   *result = CallWhileUnlocked(ppp_input_event_impl_->HandleInputEvent,
 118                               instance,
 119                               resource->pp_resource());
 120 }
 121
 122 }  // namespace proxy
 123 }  // namespace ppapi