Move WebUIMessageHandler to its own file in the public directory and put it in the content namesp...

content/browser/webui/web_ui_message_handler.cc

+// Copyright (c) 2011 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 "content/public/browser/web_ui_message_handler.h"
+
+#include "base/i18n/rtl.h"
+#include "base/logging.h"
+#include "base/values.h"
+#include "base/string_number_conversions.h"
+#include "base/utf_string_conversions.h"
+#include "googleurl/src/gurl.h"
+
+namespace content {
+
+void WebUIMessageHandler::SetURLAndTitle(DictionaryValue* dictionary,
+                                         string16 title,
+                                         const GURL& gurl) {
+  dictionary->SetString("url", gurl.spec());
+
+  bool using_url_as_the_title = false;
+  if (title.empty()) {
+    using_url_as_the_title = true;
+    title = UTF8ToUTF16(gurl.spec());
+  }
+
+  // Since the title can contain BiDi text, we need to mark the text as either
+  // RTL or LTR, depending on the characters in the string. If we use the URL
+  // as the title, we mark the title as LTR since URLs are always treated as
+  // left to right strings.
+  string16 title_to_set(title);
+  if (base::i18n::IsRTL()) {
+    if (using_url_as_the_title) {
+      base::i18n::WrapStringWithLTRFormatting(&title_to_set);
+    } else {
+      base::i18n::AdjustStringForLocaleDirection(&title_to_set);
+    }
+  }
+  dictionary->SetString("title", title_to_set);
+}
+
+bool WebUIMessageHandler::ExtractIntegerValue(const ListValue* value,
+                                              int* out_int) {
+  std::string string_value;
+  if (value->GetString(0, &string_value))
+    return base::StringToInt(string_value, out_int);
+  double double_value;
+  if (value->GetDouble(0, &double_value)) {
+    *out_int = static_cast<int>(double_value);
+    return true;
+  }
+  NOTREACHED();
+  return false;
+}
+
+bool WebUIMessageHandler::ExtractDoubleValue(const ListValue* value,
+                                            double* out_value) {
+  std::string string_value;
+  if (value->GetString(0, &string_value))
+    return base::StringToDouble(string_value, out_value);
+  NOTREACHED();
+  return false;
+}
+
+string16 WebUIMessageHandler::ExtractStringValue(const ListValue* value) {
+  string16 string16_value;
+  if (value->GetString(0, &string16_value))
+    return string16_value;
+  NOTREACHED();
+  return string16();
+}
+
+}  // namespace content