content/browser/webui/web_ui_message_handler.cc

   1 // Copyright (c) 2012 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 "content/public/browser/web_ui_message_handler.h"
   6
   7 #include "base/logging.h"
   8 #include "base/values.h"
   9 #include "base/string_number_conversions.h"
  10 #include "base/utf_string_conversions.h"
  11 #include "googleurl/src/gurl.h"
  12
  13 namespace content {
  14
  15 bool WebUIMessageHandler::ExtractIntegerValue(const ListValue* value,
  16                                               int* out_int) {
  17   std::string string_value;
  18   if (value->GetString(0, &string_value))
  19     return base::StringToInt(string_value, out_int);
  20   double double_value;
  21   if (value->GetDouble(0, &double_value)) {
  22     *out_int = static_cast<int>(double_value);
  23     return true;
  24   }
  25   NOTREACHED();
  26   return false;
  27 }
  28
  29 bool WebUIMessageHandler::ExtractDoubleValue(const ListValue* value,
  30                                              double* out_value) {
  31   std::string string_value;
  32   if (value->GetString(0, &string_value))
  33     return base::StringToDouble(string_value, out_value);
  34   if (value->GetDouble(0, out_value))
  35     return true;
  36   NOTREACHED();
  37   return false;
  38 }
  39
  40 string16 WebUIMessageHandler::ExtractStringValue(const ListValue* value) {
  41   string16 string16_value;
  42   if (value->GetString(0, &string16_value))
  43     return string16_value;
  44   NOTREACHED();
  45   return string16();
  46 }
  47
  48 }  // namespace content