Added support for animated/nonanimated user image.

chrome/browser/ui/webui/options2/chromeos/user_image_source2.cc

 // 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/ui/webui/options2/chromeos/user_image_source2.h"
 
 #include "base/memory/ref_counted_memory.h"
 #include "base/message_loop.h"
+#include "base/string_split.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/common/url_constants.h"
+#include "googleurl/src/url_parse.h"
 #include "grit/theme_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/codec/png_codec.h"
 
+namespace {
+
+// Animated key is used in user image URL requests to specify that
+// animated version of user image is required. Without that key
+// non-animated version of user image should be returned.
+const char kKeyAnimated[] = "animated";
+
+// Extracts from user image request user email and type of requested
+// image (animated or non-animated). |path| is an user image request
+// and should look like "username@host?key1=value1&...&key_n=value_n".
+// So, "username@host" is stored into |email|. If a query part of
+// |path| contains "animated" key, |is_image_animated| is set to true,
+// otherwise |is_image_animated| is set to false. Doesn't change
+// arguments if email can't be parsed (for instance, in guest mode).
+void ParseRequest(const std::string& path,
+                  std::string* email,
+                  bool* is_image_animated) {
+  url_parse::Parsed parsed;
+  url_parse::ParseStandardURL(path.c_str(), path.size(), &parsed);
+  if (!parsed.username.is_valid() || !parsed.host.is_valid())
+    return;
+
+  DCHECK(email != NULL);
+  *email = path.substr(parsed.username.begin, parsed.username.len);
+  email->append("@");
+  email->append(path.substr(parsed.host.begin, parsed.host.len));
+
+  if (!parsed.query.is_valid())
+    return;
+
+  url_parse::Component query = parsed.query;
+  url_parse::Component key, value;
+  DCHECK(is_image_animated != NULL);
+  *is_image_animated = false;
+  while (ExtractQueryKeyValue(path.c_str(), &query, &key, &value)) {
+    if (path.substr(key.begin, key.len) == kKeyAnimated) {
+      *is_image_animated = true;
+      break;
+    }
+  }
+}
+
+}  // namespace
+
 namespace chromeos {
 namespace options2 {
 
 std::vector<unsigned char> UserImageSource::GetUserImage(
-    const std::string& email) const {
+    const std::string& email, bool is_image_animated) const {
   std::vector<unsigned char> user_image;
   const chromeos::User* user = chromeos::UserManager::Get()->FindUser(email);
   if (user) {
-    gfx::PNGCodec::EncodeBGRASkBitmap(user->image(), false, &user_image);
+    if (user->has_animated_image() && is_image_animated)
+      user->GetAnimatedImage(&user_image);
+    else
+      gfx::PNGCodec::EncodeBGRASkBitmap(user->image(), false, &user_image);
     return user_image;
   }
   gfx::PNGCodec::EncodeBGRASkBitmap(
       *ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
           IDR_LOGIN_DEFAULT_USER),
       false,
       &user_image);
   return user_image;
 }
 
 UserImageSource::UserImageSource()
     : DataSource(chrome::kChromeUIUserImageHost, MessageLoop::current()) {
 }
 
 UserImageSource::~UserImageSource() {}
 
 void UserImageSource::StartDataRequest(const std::string& path,
                                        bool is_incognito,
                                        int request_id) {
-  // Strip the query param value - we only use it as a hack to ensure our
-  // image gets reloaded instead of being pulled from the browser cache
-  std::string email = path.substr(0, path.find_first_of("?"));
-  SendResponse(request_id, new base::RefCountedBytes(GetUserImage(email)));
+  std::string email;
+  bool is_image_animated = false;
+  ParseRequest(path, &email, &is_image_animated);
+
+  std::vector<unsigned char> image = GetUserImage(email, is_image_animated);
+  SendResponse(request_id, new base::RefCountedBytes(image));
 }
 
-std::string UserImageSource::GetMimeType(const std::string&) const {
+std::string UserImageSource::GetMimeType(const std::string& path) const {
   // We need to explicitly return a mime type, otherwise if the user tries to
   // drag the image they get no extension.
+  std::string email;
+  bool is_image_animated = false;
+  ParseRequest(path, &email, &is_image_animated);
+
+  if (is_image_animated) {
+    const chromeos::User* user = chromeos::UserManager::Get()->FindUser(email);
+    if (user && user->has_animated_image())
+      return "image/gif";
+  }
   return "image/png";
 }
 
 }  // namespace options2
 }  // namespace chromeos