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      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());
     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());
     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
     72