blob: 554d1a950d736f81531c4615d622ba5c0042329e [file] [log] [blame]
// Copyright 2014 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 "base/macros.h"
#include "v8/include/v8.h"
namespace extensions {
// NativeHandlers are intended to be used with a ModuleSystem. The ModuleSystem
// will assume ownership of the NativeHandler, and as a ModuleSystem is tied to
// a single v8::Context, this implies that NativeHandlers will also be tied to
// a single v8::Context.
// TODO(koz): Rename this to NativeJavaScriptModule.
class NativeHandler {
virtual ~NativeHandler();
// Initializes the native handler.
virtual void Initialize() = 0;
// Returns true if the handler has been initialized.
virtual bool IsInitialized() = 0;
// Create a new instance of the object this handler specifies.
virtual v8::Local<v8::Object> NewInstance() = 0;
// Invalidate this object so it cannot be used any more. This is needed
// because it's possible for this to outlive its owner context. Invalidate
// must be called before this happens.
// Subclasses should override to invalidate their own V8 state. If they do
// they must call their superclass' Invalidate().
// Invalidate() will be called on destruction, if it hasn't already been.
// Subclasses don't need to do it themselves.
virtual void Invalidate();
// Allow subclasses to query valid state.
bool is_valid() { return is_valid_; }
bool is_valid_;
} // namespace extensions