| // Copyright (c) 2012 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/basictypes.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. |
| AutocompleteController* autocomplete_controller() const { |
| return edit_model_->autocomplete_controller(); |
| } |
| |
| const AutocompleteResult& result() const { |
| return autocomplete_controller()->result(); |
| } |
| |
| size_t hovered_line() const { |
| return hovered_line_; |
| } |
| |
| // 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(); |
| |
| // 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; |
| |
| 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_ |