mojo/bindings/js/handle.cc

   1 // Copyright 2014 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 "mojo/bindings/js/handle.h"
   6
   7 #include "mojo/bindings/js/handle_close_observer.h"
   8
   9 namespace mojo {
  10 namespace js {
  11
  12 gin::WrapperInfo HandleWrapper::kWrapperInfo = { gin::kEmbedderNativeGin };
  13
  14 HandleWrapper::HandleWrapper(MojoHandle handle)
  15     : handle_(mojo::Handle(handle)) {
  16 }
  17
  18 HandleWrapper::~HandleWrapper() {
  19   NotifyCloseObservers();
  20 }
  21
  22 void HandleWrapper::Close() {
  23   NotifyCloseObservers();
  24   handle_.reset();
  25 }
  26
  27 void HandleWrapper::AddCloseObserver(HandleCloseObserver* observer) {
  28   close_observers_.AddObserver(observer);
  29 }
  30
  31 void HandleWrapper::RemoveCloseObserver(HandleCloseObserver* observer) {
  32   close_observers_.RemoveObserver(observer);
  33 }
  34
  35 void HandleWrapper::NotifyCloseObservers() {
  36   if (!handle_.is_valid())
  37     return;
  38
  39   FOR_EACH_OBSERVER(HandleCloseObserver, close_observers_, OnWillCloseHandle());
  40 }
  41
  42 }  // namespace js
  43 }  // namespace mojo
  44
  45 namespace gin {
  46
  47 v8::Handle<v8::Value> Converter<mojo::Handle>::ToV8(v8::Isolate* isolate,
  48                                                     const mojo::Handle& val) {
  49   if (!val.is_valid())
  50     return v8::Null(isolate);
  51   return mojo::js::HandleWrapper::Create(isolate, val.value()).ToV8();
  52 }
  53
  54 bool Converter<mojo::Handle>::FromV8(v8::Isolate* isolate,
  55                                      v8::Handle<v8::Value> val,
  56                                      mojo::Handle* out) {
  57   if (val->IsNull()) {
  58     *out = mojo::Handle();
  59     return true;
  60   }
  61
  62   gin::Handle<mojo::js::HandleWrapper> handle;
  63   if (!Converter<gin::Handle<mojo::js::HandleWrapper> >::FromV8(
  64       isolate, val, &handle))
  65     return false;
  66
  67   *out = handle->get();
  68   return true;
  69 }
  70
  71 }  // namespace gin