// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "sky/shell/sky_view.h"

#include <android/input.h>
#include <android/native_window_jni.h>

#include "base/android/jni_android.h"
#include "jni/SkyView_jni.h"

namespace sky {
namespace shell {

// static
bool SkyView::Register(JNIEnv* env) {
  return RegisterNativesImpl(env);
}

SkyView::Delegate::~Delegate() {
}

SkyView::SkyView(Delegate* delegate) : delegate_(delegate), window_(NULL) {
}

SkyView::~SkyView() {
  if (window_)
    ReleaseWindow();
}

void SkyView::Init() {
  JNIEnv* env = base::android::AttachCurrentThread();
  Java_SkyView_createForActivity(env, base::android::GetApplicationContext(),
                                 reinterpret_cast<jlong>(this));
}

void SkyView::Destroy(JNIEnv* env, jobject obj) {
  delegate_->OnDestroyed();
}

void SkyView::SurfaceCreated(JNIEnv* env, jobject obj, jobject jsurface) {
  base::android::ScopedJavaLocalRef<jobject> protector(env, jsurface);
  // Note: This ensures that any local references used by
  // ANativeWindow_fromSurface are released immediately. This is needed as a
  // workaround for https://code.google.com/p/android/issues/detail?id=68174
  {
    base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
    window_ = ANativeWindow_fromSurface(env, jsurface);
  }
  delegate_->OnAcceleratedWidgetAvailable(window_);
}

void SkyView::SurfaceDestroyed(JNIEnv* env, jobject obj) {
  DCHECK(window_);
  ReleaseWindow();
}

void SkyView::SurfaceSetSize(JNIEnv* env,
                             jobject obj,
                             jint width,
                             jint height,
                             jfloat density) {
}

void SkyView::ReleaseWindow() {
  ANativeWindow_release(window_);
  window_ = NULL;
}

}  // namespace shell
}  // namespace sky