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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_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
    124