ui/app_list/search_result.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_APP_LIST_SEARCH_RESULT_H_
   6 #define UI_APP_LIST_SEARCH_RESULT_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/observer_list.h"
  13 #include "base/strings/string16.h"
  14 #include "ui/app_list/app_list_export.h"
  15 #include "ui/gfx/image/image_skia.h"
  16 #include "ui/gfx/range/range.h"
  17
  18 namespace ui {
  19 class MenuModel;
  20 }
  21
  22 namespace app_list {
  23
  24 class SearchResultObserver;
  25 class TokenizedString;
  26 class TokenizedStringMatch;
  27
  28 // SearchResult consists of an icon, title text and details text. Title and
  29 // details text can have tagged ranges that are displayed differently from
  30 // default style.
  31 class APP_LIST_EXPORT SearchResult {
  32  public:
  33   // How the result should be displayed. Do not change the order of these as
  34   // they are used for metrics.
  35   enum DisplayType {
  36     DISPLAY_NONE = 0,
  37     DISPLAY_LIST,
  38     DISPLAY_TILE,
  39     DISPLAY_RECOMMENDATION,
  40     // Add new values here.
  41
  42     DISPLAY_TYPE_LAST,
  43   };
  44
  45   // A tagged range in search result text.
  46   struct APP_LIST_EXPORT Tag {
  47     // Similar to ACMatchClassification::Style, the style values are not
  48     // mutually exclusive.
  49     enum Style {
  50       NONE  = 0,
  51       URL   = 1 << 0,
  52       MATCH = 1 << 1,
  53       DIM   = 1 << 2,
  54     };
  55
  56     Tag(int styles, size_t start, size_t end)
  57         : styles(styles),
  58           range(start, end) {
  59     }
  60
  61     int styles;
  62     gfx::Range range;
  63   };
  64   typedef std::vector<Tag> Tags;
  65
  66   // Data representing an action that can be performed on this search result.
  67   // An action could be represented as an icon set or as a blue button with
  68   // a label. Icon set is chosen if label text is empty. Otherwise, a blue
  69   // button with the label text will be used.
  70   struct APP_LIST_EXPORT Action {
  71     Action(const gfx::ImageSkia& base_image,
  72            const gfx::ImageSkia& hover_image,
  73            const gfx::ImageSkia& pressed_image,
  74            const base::string16& tooltip_text);
  75     Action(const base::string16& label_text,
  76            const base::string16& tooltip_text);
  77     ~Action();
  78
  79     gfx::ImageSkia base_image;
  80     gfx::ImageSkia hover_image;
  81     gfx::ImageSkia pressed_image;
  82
  83     base::string16 tooltip_text;
  84     base::string16 label_text;
  85   };
  86   typedef std::vector<Action> Actions;
  87
  88   SearchResult();
  89   virtual ~SearchResult();
  90
  91   const gfx::ImageSkia& icon() const { return icon_; }
  92   void SetIcon(const gfx::ImageSkia& icon);
  93
  94   const base::string16& title() const { return title_; }
  95   void set_title(const base::string16& title) { title_ = title;}
  96
  97   const Tags& title_tags() const { return title_tags_; }
  98   void set_title_tags(const Tags& tags) { title_tags_ = tags; }
  99
 100   const base::string16& details() const { return details_; }
 101   void set_details(const base::string16& details) { details_ = details; }
 102
 103   const Tags& details_tags() const { return details_tags_; }
 104   void set_details_tags(const Tags& tags) { details_tags_ = tags; }
 105
 106   const std::string& id() const { return id_; }
 107
 108   double relevance() const { return relevance_; }
 109   void set_relevance(double relevance) { relevance_ = relevance; }
 110
 111   DisplayType display_type() const { return display_type_; }
 112   void set_display_type(DisplayType display_type) {
 113     display_type_ = display_type;
 114   }
 115
 116   int distance_from_origin() { return distance_from_origin_; }
 117   void set_distance_from_origin(int distance) {
 118     distance_from_origin_ = distance;
 119   }
 120
 121   const Actions& actions() const {
 122     return actions_;
 123   }
 124   void SetActions(const Actions& sets);
 125
 126   // Whether the result can be automatically selected by a voice query.
 127   // (Non-voice results can still appear in the results list to be manually
 128   // selected.)
 129   bool voice_result() const { return voice_result_; }
 130
 131   bool is_installing() const { return is_installing_; }
 132   void SetIsInstalling(bool is_installing);
 133
 134   int percent_downloaded() const { return percent_downloaded_; }
 135   void SetPercentDownloaded(int percent_downloaded);
 136
 137   // Returns the dimension at which this result's icon should be displayed.
 138   int GetPreferredIconDimension() const;
 139
 140   void NotifyItemInstalled();
 141
 142   void AddObserver(SearchResultObserver* observer);
 143   void RemoveObserver(SearchResultObserver* observer);
 144
 145   // Updates the result's relevance score, and sets its title and title tags,
 146   // based on a string match result.
 147   void UpdateFromMatch(const TokenizedString& title,
 148                        const TokenizedStringMatch& match);
 149
 150   // TODO(mukai): Remove this method and really simplify the ownership of
 151   // SearchResult. Ideally, SearchResult will be copyable.
 152   virtual scoped_ptr<SearchResult> Duplicate() const = 0;
 153
 154   // Invokes a custom action on the result. It does nothing by default.
 155   virtual void InvokeAction(int action_index, int event_flags);
 156
 157   // Returns the context menu model for this item, or NULL if there is currently
 158   // no menu for the item (e.g. during install).
 159   // Note the returned menu model is owned by this item.
 160   virtual ui::MenuModel* GetContextMenuModel();
 161
 162   // Returns a string showing |text| marked up with brackets indicating the
 163   // tag positions in |tags|. Useful for debugging and testing.
 164   static std::string TagsDebugString(const std::string& text, const Tags& tags);
 165
 166  protected:
 167   void set_id(const std::string& id) { id_ = id; }
 168   void set_voice_result(bool voice_result) { voice_result_ = voice_result; }
 169
 170  private:
 171   friend class SearchController;
 172
 173   // Opens the result. Clients should use AppListViewDelegate::OpenSearchResult.
 174   virtual void Open(int event_flags);
 175
 176   gfx::ImageSkia icon_;
 177
 178   base::string16 title_;
 179   Tags title_tags_;
 180
 181   base::string16 details_;
 182   Tags details_tags_;
 183
 184   std::string id_;
 185   double relevance_;
 186   DisplayType display_type_;
 187
 188   // The Manhattan distance from the origin of all search results to this
 189   // result. This is logged for UMA.
 190   int distance_from_origin_;
 191
 192   Actions actions_;
 193   bool voice_result_;
 194
 195   bool is_installing_;
 196   int percent_downloaded_;
 197
 198   base::ObserverList<SearchResultObserver> observers_;
 199
 200   DISALLOW_COPY_AND_ASSIGN(SearchResult);
 201 };
 202
 203 }  // namespace app_list
 204
 205 #endif  // UI_APP_LIST_SEARCH_RESULT_H_