Translate: Refactoring: Create TranslateUIDelegate

chrome/browser/translate/translate_infobar_delegate.h

Index: chrome/browser/translate/translate_infobar_delegate.h
diff --git a/chrome/browser/translate/translate_infobar_delegate.h b/chrome/browser/translate/translate_infobar_delegate.h
index 5b21995637dc7b7b537a693860f735d984c41738..59abd9e5c5bd47051b1afccf880687edc20b7c7c 100644
--- a/chrome/browser/translate/translate_infobar_delegate.h
+++ b/chrome/browser/translate/translate_infobar_delegate.h
@@ -13,6 +13,7 @@
 #include "base/logging.h"
 #include "chrome/browser/infobars/infobar_delegate.h"
 #include "chrome/browser/translate/translate_prefs.h"
+#include "chrome/browser/translate/translate_ui_delegate.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/translate/translate_errors.h"
 
@@ -69,45 +70,41 @@ class TranslateInfoBarDelegate : public InfoBarDelegate {
                      const ShortcutConfiguration& shortcut_config);
 
   // Returns the number of languages supported.
-  size_t num_languages() const { return languages_.size(); }
+  size_t num_languages() const { return ui_delegate_.GetNumberOfLanguages(); }
 
   // Returns the ISO code for the language at |index|.
   std::string language_code_at(size_t index) const {
-    DCHECK_LT(index, num_languages());
-    return languages_[index].first;
+    return ui_delegate_.GetLanguageCodeAt(index);
   }
 
   // Returns the displayable name for the language at |index|.
   string16 language_name_at(size_t index) const {
-    if (index == kNoIndex)
-      return string16();
-    DCHECK_LT(index, num_languages());
-    return languages_[index].second;
+    return ui_delegate_.GetLanguageNameAt(index);
   }
 
   Type infobar_type() const { return infobar_type_; }
 
   TranslateErrors::Type error_type() const { return error_type_; }
 
-  size_t original_language_index() const { return original_language_index_; }
+  size_t original_language_index() const {
+    return ui_delegate_.GetOriginalLanguageIndex();
+  }
   void set_original_language_index(size_t language_index) {
-    DCHECK_LT(language_index, num_languages());
-    original_language_index_ = language_index;
+    ui_delegate_.SetOriginalLanguageIndex(language_index);
+  }
+  size_t target_language_index() const {
+    return ui_delegate_.GetTargetLanguageIndex();
   }
-  size_t target_language_index() const { return target_language_index_; }
   void set_target_language_index(size_t language_index) {
-    DCHECK_LT(language_index, num_languages());
-    target_language_index_ = language_index;
+    ui_delegate_.SetTargetLanguageIndex(language_index);
   }
 
   // Convenience methods.
   std::string original_language_code() const {
-    return (original_language_index() == kNoIndex) ?
-        chrome::kUnknownLanguageCode :
-        language_code_at(original_language_index());
+    return ui_delegate_.GetOriginalLanguageCode();
   }
   std::string target_language_code() const {
-    return language_code_at(target_language_index());
+    return ui_delegate_.GetTargetLanguageCode();
   }
 
   // Returns true if the current infobar indicates an error (in which case it
@@ -199,34 +196,13 @@ class TranslateInfoBarDelegate : public InfoBarDelegate {
        const content::LoadCommittedDetails& details) const OVERRIDE;
   virtual TranslateInfoBarDelegate* AsTranslateInfoBarDelegate() OVERRIDE;
 
-  // Gets the host of the page being translated, or an empty string if no URL is
-  // associated with the current page.
-  std::string GetPageHost();
-
   Type infobar_type_;
 
   // The type of fading animation if any that should be used when showing this
   // infobar.
   BackgroundAnimationType background_animation_;
 
-  // The list supported languages for translation.
-  // The pair first string is the language ISO code (ex: en, fr...), the second
-  // string is the displayable name on the current locale.
-  // The languages are sorted alphabetically based on the displayable name.
-  std::vector<LanguageNamePair> languages_;
-
-  // The index for language the page is originally in.
-  size_t original_language_index_;
-
-  // The index for language the page is originally in that was originally
-  // reported (original_language_index_ changes if the user selects a new
-  // original language, but this one does not).  This is necessary to report
-  // language detection errors with the right original language even if the user
-  // changed the original language.
-  size_t initial_original_language_index_;
-
-  // The index for language the page should be translated to.
-  size_t target_language_index_;
+  TranslateUIDelegate ui_delegate_;
 
   // The error that occurred when trying to translate (NONE if no error).
   TranslateErrors::Type error_type_;