chrome/browser/icon_loader.cc

   1 // Copyright 2012 The Chromium Authors
   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 "chrome/browser/icon_loader.h"
   6
   7 #include <utility>
   8
   9 #include "base/functional/bind.h"
  10 #include "base/task/single_thread_task_runner.h"
  11 #include "base/task/thread_pool.h"
  12 #include "build/build_config.h"
  13 #include "content/public/browser/browser_thread.h"
  14
  15 using content::BrowserThread;
  16
  17 // static
  18 void IconLoader::LoadIcon(const base::FilePath& file_path,
  19                           IconSize size,
  20                           float scale,
  21                           IconLoadedCallback callback) {
  22   (new IconLoader(file_path, size, scale, std::move(callback)))->Start();
  23 }
  24
  25 IconLoader::IconLoader(const base::FilePath& file_path,
  26                        IconSize size,
  27                        float scale,
  28                        IconLoadedCallback callback)
  29     : file_path_(file_path),
  30 #if !BUILDFLAG(IS_ANDROID)
  31       icon_size_(size),
  32 #endif
  33       scale_(scale),
  34       callback_(std::move(callback)) {
  35 }
  36
  37 IconLoader::~IconLoader() = default;
  38
  39 #if !BUILDFLAG(IS_CHROMEOS)
  40 void IconLoader::Start() {
  41   target_task_runner_ = base::SingleThreadTaskRunner::GetCurrentDefault();
  42
  43   base::ThreadPool::PostTask(
  44       FROM_HERE, traits(),
  45       base::BindOnce(&IconLoader::ReadGroup, base::Unretained(this)));
  46 }
  47
  48 #if !BUILDFLAG(IS_WIN)
  49 void IconLoader::ReadGroup() {
  50   group_ = GroupForFilepath(file_path_);
  51
  52   GetReadIconTaskRunner()->PostTask(
  53       FROM_HERE, base::BindOnce(&IconLoader::ReadIcon, base::Unretained(this)));
  54 }
  55 #endif  // !BUILDFLAG(IS_WIN)
  56 #endif  // !BUILDFLAG(IS_CHROMEOS)