third_party/WebKit/Source/modules/installedapp/InstalledAppController.cpp

// Copyright 2016 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 "modules/installedapp/InstalledAppController.h"

#include "core/frame/LocalFrame.h"
#include "platform/RuntimeEnabledFeatures.h"
#include "public/platform/WebSecurityOrigin.h"

#include <utility>

namespace blink {

InstalledAppController::~InstalledAppController() {}

void InstalledAppController::provideTo(LocalFrame& frame,
                                       WebInstalledAppClient* client) {
  ASSERT(RuntimeEnabledFeatures::installedAppEnabled());

  InstalledAppController* controller =
      new InstalledAppController(frame, client);
  Supplement<LocalFrame>::provideTo(frame, supplementName(), controller);
}

InstalledAppController* InstalledAppController::from(LocalFrame& frame) {
  InstalledAppController* controller = static_cast<InstalledAppController*>(
      Supplement<LocalFrame>::from(frame, supplementName()));
  ASSERT(controller);
  return controller;
}

InstalledAppController::InstalledAppController(LocalFrame& frame,
                                               WebInstalledAppClient* client)
    : DOMWindowProperty(&frame), m_client(client) {}

const char* InstalledAppController::supplementName() {
  return "InstalledAppController";
}

void InstalledAppController::getInstalledApps(
    const WebSecurityOrigin& url,
    std::unique_ptr<AppInstalledCallbacks> callback) {
  // When detached, the client is no longer valid.
  if (!m_client) {
    callback.release()->onError();
    return;
  }

  // Client is expected to take ownership of the callback
  m_client->getInstalledRelatedApps(url, std::move(callback));
}

void InstalledAppController::frameDestroyed() {
  m_client = nullptr;
  DOMWindowProperty::frameDestroyed();
}

DEFINE_TRACE(InstalledAppController) {
  Supplement<LocalFrame>::trace(visitor);
  DOMWindowProperty::trace(visitor);
}

}  // namespace blink