Translate: New Bubble UX (for the view toolkit)

chrome/browser/tab_contents/language_state.h

 // 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.
 
 #ifndef CHROME_BROWSER_TAB_CONTENTS_LANGUAGE_STATE_H_
 #define CHROME_BROWSER_TAB_CONTENTS_LANGUAGE_STATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 
 namespace content {
+struct LoadCommittedDetails;
 class NavigationController;
-struct LoadCommittedDetails;
+class WebContents;
 }
 
 // This class holds the language state of the current page.
 // There is one LanguageState instance per WebContents.
 // It is used to determine when navigating to a new page whether it should
 // automatically be translated.
 // This auto-translate behavior is the expected behavior when:
 // - user is on page in language A that they had translated to language B.
 // - user clicks a link in that page that takes them to a page also in language
 //   A.
 
 class LanguageState {
  public:
+  class Observer {
+   public:
+    virtual void OnTranslateEnabledChanged(content::WebContents* source) = 0;

[sky, 2013/10/18 14:31:10]

Add description. Also, I would prefer this in its own header.

[hajimehoshi, 2013/10/21 10:29:12]

Done.

+
+   protected:
+    virtual ~Observer() {}
+  };
+
   explicit LanguageState(content::NavigationController* nav_controller);
   ~LanguageState();
 
   // Should be called when the page did a new navigation (whether it is a main
   // frame or sub-frame navigation).
   void DidNavigate(const content::LoadCommittedDetails& details);
 
   // Should be called when the language of the page has been determined.
   // |page_needs_translation| when false indicates that the browser should not
   // offer to translate the page.
@@ skipping 26 matching lines @@
   void set_translation_pending(bool value) { translation_pending_ = value; }
 
   // Whether the user has already declined to translate the page.
   bool translation_declined() const { return translation_declined_; }
   void set_translation_declined(bool value) { translation_declined_ = value; }
 
   // Whether the current page was navigated through an in-page (fragment)
   // navigation.
   bool in_page_navigation() const { return in_page_navigation_; }
 
+  bool translate_enabled() const { return translate_enabled_; }
+  void SetTranslateEnabled(bool value);
+
+  // Whether the current page's language is different from the previous
+  // language.
+  bool IsLanguageChanged() const;

[sky, 2013/10/18 14:31:10]

HasLanguageChanged

[hajimehoshi, 2013/10/21 10:29:12]

Done.

+
+  void set_observer(Observer* observer) { observer_ = observer; }
+
  private:
   // The languages this page is in. Note that current_lang_ is different from
   // original_lang_ when the page has been translated.
   // Note that these might be empty if the page language has not been determined
   // yet.
   std::string original_lang_;
   std::string current_lang_;
 
   // Same as above but for the previous page.
   std::string prev_original_lang_;
@@ skipping 18 matching lines @@
   bool translation_pending_;
 
   // Whether the user has declined to translate the page (by closing the infobar
   // for example).  This is necessary as a new infobar could be shown if a new
   // load happens in the page after the user closed the infobar.
   bool translation_declined_;
 
   // Whether the current navigation is a fragment navigation (in page).
   bool in_page_navigation_;
 
+  // Whether the Translate is enabled.
+  bool translate_enabled_;
+
+  Observer* observer_;
+
   DISALLOW_COPY_AND_ASSIGN(LanguageState);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_LANGUAGE_STATE_H_