// Copyright (c) 2012 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 "chrome/browser/icon_loader.h"
#include "base/bind.h"
#include "base/threading/thread_task_runner_handle.h"
#include "content/public/browser/browser_thread.h"

using content::BrowserThread;

// static
IconLoader* IconLoader::Create(const base::FilePath& file_path,
                               IconSize size,
                               IconLoadedCallback callback) {
  return new IconLoader(file_path, size, callback);
}

void IconLoader::Start() {
  target_task_runner_ = base::ThreadTaskRunnerHandle::Get();
  BrowserThread::PostTaskAndReply(
      BrowserThread::FILE, FROM_HERE,
      base::Bind(&IconLoader::ReadGroup, base::Unretained(this)),
      base::Bind(&IconLoader::OnReadGroup, base::Unretained(this)));
}

IconLoader::IconLoader(const base::FilePath& file_path,
                       IconSize size,
                       IconLoadedCallback callback)
    : file_path_(file_path), icon_size_(size), callback_(callback) {}

IconLoader::~IconLoader() {}

void IconLoader::ReadGroup() {
  group_ = GroupForFilepath(file_path_);
}

void IconLoader::OnReadGroup() {
  BrowserThread::PostTask(
      ReadIconThreadID(), FROM_HERE,
      base::Bind(&IconLoader::ReadIcon, base::Unretained(this)));
}