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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 }  // namespace
     58 
     59 PPP_InputEvent_Proxy::PPP_InputEvent_Proxy(Dispatcher* dispatcher)
     60     : InterfaceProxy(dispatcher),
     61       ppp_input_event_impl_(NULL) {
     62   if (dispatcher->IsPlugin()) {
     63     ppp_input_event_impl_ = static_cast<const PPP_InputEvent*>(
     64         dispatcher->local_get_interface()(PPP_INPUT_EVENT_INTERFACE));
     65   }
     66 }
     67 
     68 PPP_InputEvent_Proxy::~PPP_InputEvent_Proxy() {
     69 }
     70 
     71 // static
     72 const PPP_InputEvent* PPP_InputEvent_Proxy::GetProxyInterface() {
     73   return &input_event_interface;
     74 }
     75 
     76 bool PPP_InputEvent_Proxy::OnMessageReceived(const IPC::Message& msg) {
     77   if (!dispatcher()->IsPlugin())
     78     return false;
     79 
     80   bool handled = true;
     81   IPC_BEGIN_MESSAGE_MAP(PPP_InputEvent_Proxy, msg)
     82     IPC_MESSAGE_HANDLER(PpapiMsg_PPPInputEvent_HandleInputEvent,
     83                         OnMsgHandleInputEvent)
     84     IPC_MESSAGE_HANDLER(PpapiMsg_PPPInputEvent_HandleFilteredInputEvent,
     85                         OnMsgHandleFilteredInputEvent)
     86     IPC_MESSAGE_UNHANDLED(handled = false)
     87   IPC_END_MESSAGE_MAP()
     88   return handled;
     89 }
     90 
     91 void PPP_InputEvent_Proxy::OnMsgHandleInputEvent(PP_Instance instance,
     92                                                  const InputEventData& data) {
     93   scoped_refptr<PPB_InputEvent_Shared> resource(new PPB_InputEvent_Shared(
     94       OBJECT_IS_PROXY, instance, data));
     95   CallWhileUnlocked(ppp_input_event_impl_->HandleInputEvent,
     96                     instance,
     97                     resource->pp_resource());
     98 }
     99 
    100 void PPP_InputEvent_Proxy::OnMsgHandleFilteredInputEvent(
    101     PP_Instance instance,
    102     const InputEventData& data,
    103     PP_Bool* result) {
    104   scoped_refptr<PPB_InputEvent_Shared> resource(new PPB_InputEvent_Shared(
    105       OBJECT_IS_PROXY, instance, data));
    106   *result = CallWhileUnlocked(ppp_input_event_impl_->HandleInputEvent,
    107                               instance,
    108                               resource->pp_resource());
    109 }
    110 
    111 }  // namespace proxy
    112 }  // namespace ppapi
    113