Cleanup: de-inline a bunch of classes, rename and move "PluginInstaller" to "...

chrome/browser/translate/translate_infobar_delegate.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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 "chrome/browser/translate/translate_infobar_delegate.h"
 
 #include <algorithm>
 
 #include "app/l10n_util.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/translate/translate_infobar_view.h"
 #include "chrome/browser/translate/translate_manager.h"
 #include "chrome/common/chrome_constants.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "ui/base/resource/resource_bundle.h"
 
 // static
 TranslateInfoBarDelegate* TranslateInfoBarDelegate::CreateDelegate(
     Type type,
     TabContents* tab_contents,
     const std::string& original_language,
     const std::string& target_language) {
-  DCHECK(type != TRANSLATION_ERROR);
+  DCHECK_NE(TRANSLATION_ERROR, type);
   // The original language can only be "unknown" for the "translating"
   // infobar, which is the case when the user started a translation from the
   // context menu.
   DCHECK(type == TRANSLATING ||
       original_language != chrome::kUnknownLanguageCode);
   if ((original_language != chrome::kUnknownLanguageCode &&
           !TranslateManager::IsSupportedLanguage(original_language)) ||
-      !TranslateManager::IsSupportedLanguage(target_language)) {
+      !TranslateManager::IsSupportedLanguage(target_language))
     return NULL;
-  }
   TranslateInfoBarDelegate* delegate =
-      new TranslateInfoBarDelegate(type, TranslateErrors::NONE,
-                                   tab_contents,
+      new TranslateInfoBarDelegate(type, TranslateErrors::NONE, tab_contents,
                                    original_language, target_language);
-  DCHECK(delegate->target_language_index() != -1);
+  DCHECK_NE(-1, delegate->target_language_index());
   return delegate;
 }
 
 TranslateInfoBarDelegate* TranslateInfoBarDelegate::CreateErrorDelegate(
     TranslateErrors::Type error,
     TabContents* tab_contents,
     const std::string& original_language,
     const std::string& target_language) {
   return new TranslateInfoBarDelegate(TRANSLATION_ERROR, error, tab_contents,
                                       original_language, target_language);
 }
 
-TranslateInfoBarDelegate::TranslateInfoBarDelegate(
-    Type type,
-    TranslateErrors::Type error,
-    TabContents* tab_contents,
-    const std::string& original_language,
-    const std::string& target_language)
-    : InfoBarDelegate(tab_contents),
-      type_(type),
-      background_animation_(NONE),
-      tab_contents_(tab_contents),
-      original_language_index_(-1),
-      initial_original_language_index_(-1),
-      target_language_index_(-1),
-      error_(error),
-      infobar_view_(NULL),
-      prefs_(tab_contents_->profile()->GetPrefs()) {
-  DCHECK((type_ != TRANSLATION_ERROR && error == TranslateErrors::NONE) ||
-         (type_ == TRANSLATION_ERROR && error != TranslateErrors::NONE));
-
-  std::vector<std::string> language_codes;
-  TranslateManager::GetSupportedLanguages(&language_codes);
-
-  languages_.reserve(language_codes.size());
-  for (std::vector<std::string>::const_iterator iter = language_codes.begin();
-       iter != language_codes.end(); ++iter) {
-    std::string language_code = *iter;
-
-    string16 language_name = GetLanguageDisplayableName(language_code);
-    // Insert the language in languages_ in alphabetical order.
-    std::vector<LanguageNamePair>::iterator iter2;
-    for (iter2 = languages_.begin(); iter2 != languages_.end(); ++iter2) {
-      if (language_name.compare(iter2->second) < 0)
-        break;
-    }
-    languages_.insert(iter2, LanguageNamePair(language_code, language_name));
-  }
-  for (std::vector<LanguageNamePair>::const_iterator iter = languages_.begin();
-       iter != languages_.end(); ++iter) {
-    std::string language_code = iter->first;
-    if (language_code == original_language) {
-      original_language_index_ = iter - languages_.begin();
-      initial_original_language_index_ = original_language_index_;
-    }
-    if (language_code == target_language)
-      target_language_index_ = iter - languages_.begin();
-  }
+TranslateInfoBarDelegate::~TranslateInfoBarDelegate() {
 }
 
-TranslateInfoBarDelegate::~TranslateInfoBarDelegate() {}
-
-int TranslateInfoBarDelegate::GetLanguageCount() const {
-  return static_cast<int>(languages_.size());
-}
-
-std::string TranslateInfoBarDelegate::GetLanguageCodeAt(
-    int index) const {
-  DCHECK(index >=0 && index < GetLanguageCount());
+std::string TranslateInfoBarDelegate::GetLanguageCodeAt(int index) const {
+  DCHECK(index >= 0 && index < GetLanguageCount());
   return languages_[index].first;
 }
 
 string16 TranslateInfoBarDelegate::GetLanguageDisplayableNameAt(
     int index) const {
-  DCHECK(index >=0 && index < GetLanguageCount());
+  DCHECK(index >= 0 && index < GetLanguageCount());
   return languages_[index].second;
 }
 
 std::string TranslateInfoBarDelegate::GetOriginalLanguageCode() const {
-  if (original_language_index() == -1)
-    return chrome::kUnknownLanguageCode;
-  return GetLanguageCodeAt(original_language_index());
+  return (original_language_index() == -1) ?
+      chrome::kUnknownLanguageCode :
+      GetLanguageCodeAt(original_language_index());
 }
 
 std::string TranslateInfoBarDelegate::GetTargetLanguageCode() const {
   return GetLanguageCodeAt(target_language_index());
 }
 
 void TranslateInfoBarDelegate::SetOriginalLanguage(int language_index) {
-  DCHECK(language_index < static_cast<int>(languages_.size()));
+  DCHECK_LT(language_index, GetLanguageCount());
   original_language_index_ = language_index;
   if (infobar_view_)
     infobar_view_->OriginalLanguageChanged();
   if (type_ == AFTER_TRANSLATE)
     Translate();
 }
 
 void TranslateInfoBarDelegate::SetTargetLanguage(int language_index) {
-  DCHECK(language_index < static_cast<int>(languages_.size()));
+  DCHECK_LT(language_index, GetLanguageCount());
   target_language_index_ = language_index;
   if (infobar_view_)
     infobar_view_->TargetLanguageChanged();
   if (type_ == AFTER_TRANSLATE)
     Translate();
 }
 
-bool TranslateInfoBarDelegate::IsError() {
-  return type_ == TRANSLATION_ERROR;
-}
-
 void TranslateInfoBarDelegate::Translate() {
   const std::string& original_language_code = GetOriginalLanguageCode();
   if (!tab_contents()->profile()->IsOffTheRecord()) {
     prefs_.ResetTranslationDeniedCount(original_language_code);
     prefs_.IncrementTranslationAcceptedCount(original_language_code);
   }
 
-  TranslateManager::GetInstance()->TranslatePage(
-      tab_contents_,
+  TranslateManager::GetInstance()->TranslatePage(tab_contents_,
       GetLanguageCodeAt(original_language_index()),
       GetLanguageCodeAt(target_language_index()));
 }
 
 void TranslateInfoBarDelegate::RevertTranslation() {
   TranslateManager::GetInstance()->RevertTranslation(tab_contents_);
   tab_contents_->RemoveInfoBar(this);
 }
 
 void TranslateInfoBarDelegate::ReportLanguageDetectionError() {
-  TranslateManager::GetInstance()->
-      ReportLanguageDetectionError(tab_contents_);
+  TranslateManager::GetInstance()->ReportLanguageDetectionError(tab_contents_);
 }
 
 void TranslateInfoBarDelegate::TranslationDeclined() {
   const std::string& original_language_code = GetOriginalLanguageCode();
   if (!tab_contents()->profile()->IsOffTheRecord()) {
     prefs_.ResetTranslationAcceptedCount(original_language_code);
     prefs_.IncrementTranslationDeniedCount(original_language_code);
   }
 
   // Remember that the user declined the translation so as to prevent showing a
   // translate infobar for that page again.  (TranslateManager initiates
   // translations when getting a LANGUAGE_DETERMINED from the page, which
   // happens when a load stops. That could happen multiple times, including
   // after the user already declined the translation.)
   tab_contents_->language_state().set_translation_declined(true);
 }
 
-void TranslateInfoBarDelegate::InfoBarDismissed() {
-  if (type_ != BEFORE_TRANSLATE)
-    return;
-
-  // The user closed the infobar without clicking the translate button.
-  TranslationDeclined();
-  UMA_HISTOGRAM_COUNTS("Translate.DeclineTranslateCloseInfobar", 1);
-}
-
-void TranslateInfoBarDelegate::InfoBarClosed() {
-  delete this;
-}
-
-SkBitmap* TranslateInfoBarDelegate::GetIcon() const {
-  return ResourceBundle::GetSharedInstance().GetBitmapNamed(
-      IDR_INFOBAR_TRANSLATE);
-}
-
-InfoBarDelegate::Type TranslateInfoBarDelegate::GetInfoBarType() {
-  return InfoBarDelegate::PAGE_ACTION_TYPE;
-}
-
-TranslateInfoBarDelegate*
-TranslateInfoBarDelegate::AsTranslateInfoBarDelegate() {
-  return this;
-}
-
-
 bool TranslateInfoBarDelegate::IsLanguageBlacklisted() {
   return prefs_.IsLanguageBlacklisted(GetOriginalLanguageCode());
 }
 
 void TranslateInfoBarDelegate::ToggleLanguageBlacklist() {
   const std::string& original_lang = GetOriginalLanguageCode();
   if (prefs_.IsLanguageBlacklisted(original_lang)) {
     prefs_.RemoveLanguageFromBlacklist(original_lang);
   } else {
     prefs_.BlacklistLanguage(original_lang);
@@ skipping 42 matching lines @@
 }
 
 void TranslateInfoBarDelegate::NeverTranslatePageLanguage() {
   std::string original_lang = GetOriginalLanguageCode();
   DCHECK(!prefs_.IsLanguageBlacklisted(original_lang));
   prefs_.BlacklistLanguage(original_lang);
   tab_contents_->RemoveInfoBar(this);
 }
 
 string16 TranslateInfoBarDelegate::GetMessageInfoBarText() {
-  switch (type_) {
-    case TRANSLATING:
+  if (type_ == TRANSLATING) {
+    return l10n_util::GetStringFUTF16(IDS_TRANSLATE_INFOBAR_TRANSLATING_TO,
+        GetLanguageDisplayableNameAt(target_language_index_));
+  }
+
+  DCHECK_EQ(TRANSLATION_ERROR, type_);
+  switch (error_) {
+    case TranslateErrors::NETWORK:
+      return l10n_util::GetStringUTF16(
+          IDS_TRANSLATE_INFOBAR_ERROR_CANT_CONNECT);
+    case TranslateErrors::INITIALIZATION_ERROR:
+    case TranslateErrors::TRANSLATION_ERROR:
+      return l10n_util::GetStringUTF16(
+          IDS_TRANSLATE_INFOBAR_ERROR_CANT_TRANSLATE);
+    case TranslateErrors::UNKNOWN_LANGUAGE:
+      return l10n_util::GetStringUTF16(
+          IDS_TRANSLATE_INFOBAR_UNKNOWN_PAGE_LANGUAGE);
+    case TranslateErrors::UNSUPPORTED_LANGUAGE:
       return l10n_util::GetStringFUTF16(
-          IDS_TRANSLATE_INFOBAR_TRANSLATING_TO,
+          IDS_TRANSLATE_INFOBAR_UNSUPPORTED_PAGE_LANGUAGE,
           GetLanguageDisplayableNameAt(target_language_index_));
-    case TRANSLATION_ERROR:
-      switch (error_) {
-        case TranslateErrors::NETWORK:
-          return l10n_util::GetStringUTF16(
-              IDS_TRANSLATE_INFOBAR_ERROR_CANT_CONNECT);
-        case TranslateErrors::INITIALIZATION_ERROR:
-        case TranslateErrors::TRANSLATION_ERROR:
-          return l10n_util::GetStringUTF16(
-              IDS_TRANSLATE_INFOBAR_ERROR_CANT_TRANSLATE);
-        case TranslateErrors::UNKNOWN_LANGUAGE:
-          return l10n_util::GetStringUTF16(
-              IDS_TRANSLATE_INFOBAR_UNKNOWN_PAGE_LANGUAGE);
-        case TranslateErrors::UNSUPPORTED_LANGUAGE:
-          return l10n_util::GetStringFUTF16(
-              IDS_TRANSLATE_INFOBAR_UNSUPPORTED_PAGE_LANGUAGE,
-              GetLanguageDisplayableNameAt(target_language_index_));
-        case TranslateErrors::IDENTICAL_LANGUAGES:
-          return l10n_util::GetStringFUTF16(
-              IDS_TRANSLATE_INFOBAR_ERROR_SAME_LANGUAGE,
-              GetLanguageDisplayableNameAt(target_language_index_));
-        default:
-          NOTREACHED();
-          return string16();
-      }
+    case TranslateErrors::IDENTICAL_LANGUAGES:
+      return l10n_util::GetStringFUTF16(
+          IDS_TRANSLATE_INFOBAR_ERROR_SAME_LANGUAGE,
+          GetLanguageDisplayableNameAt(target_language_index_));
     default:
       NOTREACHED();
       return string16();
   }
 }
 
 string16 TranslateInfoBarDelegate::GetMessageInfoBarButtonText() {
-  switch (type_) {
-    case TRANSLATING:
-      return string16();
-    case TRANSLATION_ERROR:
-      if (error_ == TranslateErrors::IDENTICAL_LANGUAGES ||
-          error_ == TranslateErrors::UNKNOWN_LANGUAGE) {
-        // No retry button, we would fail again with the same error.
-        return string16();
-      }
-      if (error_ == TranslateErrors::UNSUPPORTED_LANGUAGE)
-        return l10n_util::GetStringUTF16(IDS_TRANSLATE_INFOBAR_REVERT);
-      return l10n_util::GetStringUTF16(IDS_TRANSLATE_INFOBAR_RETRY);
-    default:
-      NOTREACHED();
-      return string16();
+  if (type_ != TRANSLATION_ERROR) {
+    DCHECK_EQ(TRANSLATING, type_);
+  } else if ((error_ != TranslateErrors::IDENTICAL_LANGUAGES) &&
+             (error_ != TranslateErrors::UNKNOWN_LANGUAGE)) {
+    return l10n_util::GetStringUTF16(
+        (error_ == TranslateErrors::UNSUPPORTED_LANGUAGE) ?
+        IDS_TRANSLATE_INFOBAR_REVERT : IDS_TRANSLATE_INFOBAR_RETRY);
   }
+  return string16();
 }
 
 void TranslateInfoBarDelegate::MessageInfoBarButtonPressed() {
-  DCHECK(type_ == TRANSLATION_ERROR);
+  DCHECK_EQ(TRANSLATION_ERROR, type_);
   if (error_ == TranslateErrors::UNSUPPORTED_LANGUAGE) {
     RevertTranslation();
     return;
   }
   // This is the "Try again..." case.
-  TranslateManager::GetInstance()->TranslatePage(
-      tab_contents_, GetOriginalLanguageCode(), GetTargetLanguageCode());
+  TranslateManager::GetInstance()->TranslatePage(tab_contents_,
+      GetOriginalLanguageCode(), GetTargetLanguageCode());
 }
 
 bool TranslateInfoBarDelegate::ShouldShowMessageInfoBarButton() {
   return !GetMessageInfoBarButtonText().empty();
 }
 
 bool TranslateInfoBarDelegate::ShouldShowNeverTranslateButton() {
-  DCHECK(type_ == BEFORE_TRANSLATE);
-  if (tab_contents()->profile()->IsOffTheRecord())
-    return false;
-  return prefs_.GetTranslationDeniedCount(GetOriginalLanguageCode()) >= 3;
+  DCHECK_EQ(BEFORE_TRANSLATE, type_);
+  return !tab_contents()->profile()->IsOffTheRecord() &&
+      (prefs_.GetTranslationDeniedCount(GetOriginalLanguageCode()) >= 3);
 }
 
 bool TranslateInfoBarDelegate::ShouldShowAlwaysTranslateButton() {
-  DCHECK(type_ == BEFORE_TRANSLATE);
-  if (tab_contents()->profile()->IsOffTheRecord())
-    return false;
-  return prefs_.GetTranslationAcceptedCount(GetOriginalLanguageCode()) >= 3;
+  DCHECK_EQ(BEFORE_TRANSLATE, type_);
+  return !tab_contents()->profile()->IsOffTheRecord() &&
+      (prefs_.GetTranslationAcceptedCount(GetOriginalLanguageCode()) >= 3);
 }
 
 void TranslateInfoBarDelegate::UpdateBackgroundAnimation(
     TranslateInfoBarDelegate* previous_infobar) {
-  if (!previous_infobar || previous_infobar->IsError() == IsError()) {
+  if (!previous_infobar || previous_infobar->IsError() == IsError())
     background_animation_ = NONE;
-    return;
-  }
-  background_animation_ = IsError() ? NORMAL_TO_ERROR: ERROR_TO_NORMAL;
-}
-
-std::string TranslateInfoBarDelegate::GetPageHost() {
-  NavigationEntry* entry = tab_contents_->controller().GetActiveEntry();
-  return entry ? entry->url().HostNoBrackets() : std::string();
+  else
+    background_animation_ = IsError() ? NORMAL_TO_ERROR : ERROR_TO_NORMAL;
 }
 
 // static
 string16 TranslateInfoBarDelegate::GetLanguageDisplayableName(
     const std::string& language_code) {
   return l10n_util::GetDisplayNameForLocale(
       language_code, g_browser_process->GetApplicationLocale(), true);
 }
 
 // static
 void TranslateInfoBarDelegate::GetAfterTranslateStrings(
     std::vector<string16>* strings, bool* swap_languages) {
   DCHECK(strings);
   DCHECK(swap_languages);
 
   std::vector<size_t> offsets;
   string16 text =
       l10n_util::GetStringFUTF16(IDS_TRANSLATE_INFOBAR_AFTER_MESSAGE,
                                  string16(), string16(), &offsets);
-  DCHECK(offsets.size() == 2U);
+  DCHECK_EQ(2U, offsets.size());
 
-  if (offsets[0] > offsets[1]) {
-    // Target language comes before source.
+  *swap_languages = (offsets[0] > offsets[1]);
+  if (*swap_languages)
     std::swap(offsets[0], offsets[1]);
-    *swap_languages = true;
-  } else {
-    *swap_languages = false;
-  }
 
   strings->push_back(text.substr(0, offsets[0]));
   strings->push_back(text.substr(offsets[0], offsets[1] - offsets[0]));
   strings->push_back(text.substr(offsets[1]));
 }
+
+TranslateInfoBarDelegate::TranslateInfoBarDelegate(
+    Type type,
+    TranslateErrors::Type error,
+    TabContents* tab_contents,
+    const std::string& original_language,
+    const std::string& target_language)
+    : InfoBarDelegate(tab_contents),
+      type_(type),
+      background_animation_(NONE),
+      tab_contents_(tab_contents),
+      original_language_index_(-1),
+      initial_original_language_index_(-1),
+      target_language_index_(-1),
+      error_(error),
+      infobar_view_(NULL),
+      prefs_(tab_contents_->profile()->GetPrefs()) {
+  DCHECK_NE((type_ == TRANSLATION_ERROR), (error == TranslateErrors::NONE));
+
+  std::vector<std::string> language_codes;
+  TranslateManager::GetSupportedLanguages(&language_codes);
+
+  languages_.reserve(language_codes.size());
+  for (std::vector<std::string>::const_iterator iter = language_codes.begin();
+       iter != language_codes.end(); ++iter) {
+    std::string language_code = *iter;
+
+    string16 language_name = GetLanguageDisplayableName(language_code);
+    // Insert the language in languages_ in alphabetical order.
+    std::vector<LanguageNamePair>::iterator iter2;
+    for (iter2 = languages_.begin(); iter2 != languages_.end(); ++iter2) {
+      if (language_name.compare(iter2->second) < 0)
+        break;
+    }
+    languages_.insert(iter2, LanguageNamePair(language_code, language_name));
+  }
+  for (std::vector<LanguageNamePair>::const_iterator iter = languages_.begin();
+       iter != languages_.end(); ++iter) {
+    std::string language_code = iter->first;
+    if (language_code == original_language) {
+      original_language_index_ = iter - languages_.begin();
+      initial_original_language_index_ = original_language_index_;
+    }
+    if (language_code == target_language)
+      target_language_index_ = iter - languages_.begin();
+  }
+}
+
+void TranslateInfoBarDelegate::InfoBarDismissed() {
+  if (type_ != BEFORE_TRANSLATE)
+    return;
+
+  // The user closed the infobar without clicking the translate button.
+  TranslationDeclined();
+  UMA_HISTOGRAM_COUNTS("Translate.DeclineTranslateCloseInfobar", 1);
+}
+
+void TranslateInfoBarDelegate::InfoBarClosed() {
+  delete this;
+}
+
+SkBitmap* TranslateInfoBarDelegate::GetIcon() const {
+  return ResourceBundle::GetSharedInstance().GetBitmapNamed(
+      IDR_INFOBAR_TRANSLATE);
+}
+
+InfoBarDelegate::Type TranslateInfoBarDelegate::GetInfoBarType() const {
+  return InfoBarDelegate::PAGE_ACTION_TYPE;
+}
+
+TranslateInfoBarDelegate*
+    TranslateInfoBarDelegate::AsTranslateInfoBarDelegate() {
+  return this;
+}
+
+std::string TranslateInfoBarDelegate::GetPageHost() {
+  NavigationEntry* entry = tab_contents_->controller().GetActiveEntry();
+  return entry ? entry->url().HostNoBrackets() : std::string();
+}