ppapi/cpp/mouse_lock.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/cpp/mouse_lock.h"
   6
   7 #include "ppapi/c/ppb_mouse_lock.h"
   8 #include "ppapi/c/ppp_mouse_lock.h"
   9 #include "ppapi/cpp/completion_callback.h"
  10 #include "ppapi/cpp/instance.h"
  11 #include "ppapi/cpp/instance_handle.h"
  12 #include "ppapi/cpp/module.h"
  13 #include "ppapi/cpp/module_impl.h"
  14
  15 namespace pp {
  16
  17 namespace {
  18
  19 static const char kPPPMouseLockInterface[] = PPP_MOUSELOCK_INTERFACE;
  20
  21 void MouseLockLost(PP_Instance instance) {
  22   void* object =
  23       Instance::GetPerInstanceObject(instance, kPPPMouseLockInterface);
  24   if (!object)
  25     return;
  26   static_cast<MouseLock*>(object)->MouseLockLost();
  27 }
  28
  29 const PPP_MouseLock ppp_mouse_lock = {
  30   &MouseLockLost
  31 };
  32
  33 template <> const char* interface_name<PPB_MouseLock_1_0>() {
  34   return PPB_MOUSELOCK_INTERFACE_1_0;
  35 }
  36
  37 }  // namespace
  38
  39 MouseLock::MouseLock(Instance* instance)
  40     : associated_instance_(instance) {
  41   Module::Get()->AddPluginInterface(kPPPMouseLockInterface, &ppp_mouse_lock);
  42   instance->AddPerInstanceObject(kPPPMouseLockInterface, this);
  43 }
  44
  45 MouseLock::~MouseLock() {
  46   Instance::RemovePerInstanceObject(associated_instance_,
  47                                     kPPPMouseLockInterface, this);
  48 }
  49
  50 int32_t MouseLock::LockMouse(const CompletionCallback& cc) {
  51   if (!has_interface<PPB_MouseLock_1_0>())
  52     return cc.MayForce(PP_ERROR_NOINTERFACE);
  53   return get_interface<PPB_MouseLock_1_0>()->LockMouse(
  54       associated_instance_.pp_instance(), cc.pp_completion_callback());
  55 }
  56
  57 void MouseLock::UnlockMouse() {
  58   if (has_interface<PPB_MouseLock_1_0>()) {
  59     get_interface<PPB_MouseLock_1_0>()->UnlockMouse(
  60         associated_instance_.pp_instance());
  61   }
  62 }
  63
  64 }  // namespace pp