chrome/browser/ui/webui/chromeos/login/screenlock_icon_source.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   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/ui/webui/chromeos/login/screenlock_icon_source.h"
   6
   7 #include "chrome/browser/chromeos/login/lock/screen_locker.h"
   8 #include "chrome/browser/ui/webui/chromeos/login/screenlock_icon_provider.h"
   9 #include "chrome/common/url_constants.h"
  10 #include "net/base/escape.h"
  11
  12 namespace {
  13
  14 gfx::Image GetDefaultIcon() {
  15   return gfx::Image();
  16 }
  17
  18 }  // namespace
  19
  20 namespace chromeos {
  21
  22 ////////////////////////////////////////////////////////////////////////////////
  23 // ScreenlockIconSource
  24
  25 ScreenlockIconSource::ScreenlockIconSource(
  26     base::WeakPtr<ScreenlockIconProvider> icon_provider)
  27     : icon_provider_(icon_provider) {
  28 }
  29
  30 ScreenlockIconSource::~ScreenlockIconSource() {}
  31
  32 std::string ScreenlockIconSource::GetSource() const {
  33   return std::string(chrome::kChromeUIScreenlockIconHost);
  34 }
  35
  36 void ScreenlockIconSource::StartDataRequest(
  37     const std::string& path,
  38     int render_process_id,
  39     int render_frame_id,
  40     const content::URLDataSource::GotDataCallback& callback) {
  41   if (!icon_provider_) {
  42     callback.Run(GetDefaultIcon().As1xPNGBytes().get());
  43     return;
  44   }
  45
  46   GURL url(chrome::kChromeUIScreenlockIconURL + path);
  47   std::string username = net::UnescapeURLComponent(
  48       url.path().substr(1),
  49       net::UnescapeRule::URL_SPECIAL_CHARS | net::UnescapeRule::SPACES);
  50
  51   gfx::Image image = icon_provider_->GetIcon(username);
  52   if (image.IsEmpty()) {
  53     callback.Run(GetDefaultIcon().As1xPNGBytes().get());
  54     return;
  55   }
  56
  57   callback.Run(image.As1xPNGBytes().get());
  58 }
  59
  60 std::string ScreenlockIconSource::GetMimeType(const std::string&) const {
  61   return "image/png";
  62 }
  63
  64 // static.
  65 std::string ScreenlockIconSource::GetIconURLForUser(
  66     const std::string& username) {
  67   return std::string(chrome::kChromeUIScreenlockIconURL) +
  68       net::EscapePath(username);
  69 }
  70
  71 }  // namespace chromeos