Revert 122412 - Enabled pressing TAB to traverse through the Omnibox results

chrome/browser/autocomplete/autocomplete_popup_model.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_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_MODEL_H_
 #define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_MODEL_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/autocomplete/autocomplete.h"
 #include "chrome/browser/autocomplete/autocomplete_edit.h"
 
 class AutocompletePopupView;
 class SkBitmap;
 
 class AutocompletePopupModel {
  public:
-  // See selected_line_state_ for details.
-  enum LineState {
-    NORMAL = 0,
-    KEYWORD
-  };
-
   AutocompletePopupModel(AutocompletePopupView* popup_view,
                          AutocompleteEditModel* edit_model);
   ~AutocompletePopupModel();
 
   // Returns true if the popup is currently open.
   bool IsOpen() const;
 
   AutocompletePopupView* view() const { return view_; }
 
   // Returns the AutocompleteController used by this popup.
@@ skipping 10 matching lines @@
   }
 
   // Call to change the hovered line.  |line| should be within the range of
   // valid lines (to enable hover) or kNoMatch (to disable hover).
   void SetHoveredLine(size_t line);
 
   size_t selected_line() const {
     return selected_line_;
   }
 
-  LineState selected_line_state() const {
-    return selected_line_state_;
-  }
-
   // Call to change the selected line.  This will update all state and repaint
   // the necessary parts of the window, as well as updating the edit with the
   // new temporary text.  |line| will be clamped to the range of valid lines.
   // |reset_to_default| is true when the selection is being reset back to the
   // default match, and thus there is no temporary text (and no
   // |manually_selected_match_|). If |force| is true then the selected line will
   // be updated forcibly even if the |line| is same as the current selected
   // line.
   // NOTE: This assumes the popup is open, and thus both old and new values for
   // the selected line should not be kNoMatch.
   void SetSelectedLine(size_t line, bool reset_to_default, bool force);
 
   // Called when the user hits escape after arrowing around the popup.  This
   // will change the selected line back to the default match and redraw.
   void ResetToDefaultMatch();
 
+  // Gets the selected keyword or keyword hint for the given match. If the match
+  // is already keyword, then the keyword will be returned directly. Otherwise,
+  // it returns GetKeywordForText(match.fill_into_edit, keyword).
+  bool GetKeywordForMatch(const AutocompleteMatch& match,
+                          string16* keyword) const;
+
+  // Gets the selected keyword or keyword hint for the given text. Returns
+  // true if |keyword| represents a keyword hint, or false if |keyword|
+  // represents a selected keyword. (|keyword| will always be set [though
+  // possibly to the empty string], and you cannot have both a selected keyword
+  // and a keyword hint simultaneously.)
+  bool GetKeywordForText(const string16& text, string16* keyword) const;
+
   // Immediately updates and opens the popup if necessary, then moves the
   // current selection down (|count| > 0) or up (|count| < 0), clamping to the
   // first or last result if necessary.  If |count| == 0, the selection will be
   // unchanged, but the popup will still redraw and modify the text in the
   // AutocompleteEditModel.
   void Move(int count);
 
-  // If the selected line has both a normal match and a keyword match, this can
-  // be used to choose which to select. It is an error to call this when the
-  // selected line does not have both matches (or there is no selection).
-  void SetSelectedLineState(LineState state);
-
   // Called when the user hits shift-delete.  This should determine if the item
   // can be removed from history, and if so, remove it and update the popup.
   void TryDeletingCurrentItem();
 
   // If |match| is from an extension, returns the extension icon; otherwise
   // returns NULL.
   const SkBitmap* GetIconIfExtensionMatch(const AutocompleteMatch& match) const;
 
   // The match the user has manually chosen, if any.
   const AutocompleteResult::Selection& manually_selected_match() const {
     return manually_selected_match_;
   }
 
   // Invoked from the edit model any time the result set of the controller
   // changes.
   void OnResultChanged();
 
   // The token value for selected_line_, hover_line_ and functions dealing with
   // a "line number" that indicates "no line".
-  static const size_t kNoMatch;
+  static const size_t kNoMatch = -1;
 
  private:
   AutocompletePopupView* view_;
 
   AutocompleteEditModel* edit_model_;
 
   // The line that's currently hovered.  If we're not drawing a hover rect,
   // this will be kNoMatch, even if the cursor is over the popup contents.
   size_t hovered_line_;
 
   // The currently selected line.  This is kNoMatch when nothing is selected,
   // which should only be true when the popup is closed.
   size_t selected_line_;
 
-  // If the selected line has both a normal match and a keyword match, this
-  // determines whether the normal match (if NORMAL) or the keyword match
-  // (if KEYWORD) is selected.
-  LineState selected_line_state_;
-
   // The match the user has manually chosen, if any.
   AutocompleteResult::Selection manually_selected_match_;
 
   DISALLOW_COPY_AND_ASSIGN(AutocompletePopupModel);
 };
 
 #endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_POPUP_MODEL_H_