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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/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
     65