chrome/browser/ui/search_engines/template_url_table_model.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 CHROME_BROWSER_UI_SEARCH_ENGINES_TEMPLATE_URL_TABLE_MODEL_H_
   6 #define CHROME_BROWSER_UI_SEARCH_ENGINES_TEMPLATE_URL_TABLE_MODEL_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/compiler_specific.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/strings/string16.h"
  14 #include "components/search_engines/template_url_service_observer.h"
  15 #include "ui/base/models/table_model.h"
  16
  17 class FaviconService;
  18 class TemplateURL;
  19 class TemplateURLService;
  20
  21 namespace gfx {
  22 class ImageSkia;
  23 }
  24
  25 // TemplateURLTableModel is the TableModel implementation used by
  26 // KeywordEditorView to show the keywords in a TableView.
  27 //
  28 // TemplateURLTableModel has two columns, the first showing the description,
  29 // the second the keyword.
  30 //
  31 // TemplateURLTableModel maintains a vector of ModelEntrys that correspond to
  32 // each row in the tableview. Each ModelEntry wraps a TemplateURL, providing
  33 // the favicon. The entries in the model are sorted such that non-generated
  34 // appear first (grouped together) and are followed by generated keywords.
  35
  36 class TemplateURLTableModel : public ui::TableModel,
  37                                      TemplateURLServiceObserver {
  38  public:
  39   TemplateURLTableModel(TemplateURLService* template_url_service,
  40                         FaviconService* favicon_service);
  41
  42   ~TemplateURLTableModel() override;
  43
  44   // Reloads the entries from the TemplateURLService. This should ONLY be
  45   // invoked if the TemplateURLService wasn't initially loaded and has been
  46   // loaded.
  47   void Reload();
  48
  49   // ui::TableModel overrides.
  50   int RowCount() override;
  51   base::string16 GetText(int row, int column) override;
  52   gfx::ImageSkia GetIcon(int row) override;
  53   void SetObserver(ui::TableModelObserver* observer) override;
  54   bool HasGroups() override;
  55   Groups GetGroups() override;
  56   int GetGroupID(int row) override;
  57
  58   // Removes the entry at the specified index.
  59   void Remove(int index);
  60
  61   // Adds a new entry at the specified index.
  62   void Add(int index,
  63            const base::string16& short_name,
  64            const base::string16& keyword,
  65            const std::string& url);
  66
  67   // Update the entry at the specified index.
  68   void ModifyTemplateURL(int index,
  69                          const base::string16& title,
  70                          const base::string16& keyword,
  71                          const std::string& url);
  72
  73   // Reloads the icon at the specified index.
  74   void ReloadIcon(int index);
  75
  76   // Returns the TemplateURL at the specified index.
  77   TemplateURL* GetTemplateURL(int index);
  78
  79   // Returns the index of the TemplateURL, or -1 if it the TemplateURL is not
  80   // found.
  81   int IndexOfTemplateURL(const TemplateURL* template_url);
  82
  83   // Moves the keyword at the specified index to be at the end of the main
  84   // group. Returns the new index.  If the entry is already in the main group,
  85   // no action is taken, and the current index is returned.
  86   int MoveToMainGroup(int index);
  87
  88   // Make the TemplateURL at |index| the default.  Returns the new index, or -1
  89   // if the index is invalid or it is already the default.
  90   int MakeDefaultTemplateURL(int index);
  91
  92   // If there is an observer, it's notified the selected row has changed.
  93   void NotifyChanged(int index);
  94
  95   // Returns the index of the last entry shown in the search engines group.
  96   int last_search_engine_index() const { return last_search_engine_index_; }
  97
  98   // Returns the index of the last entry shown in the other search engines
  99   // group.
 100   int last_other_engine_index() const { return last_other_engine_index_; }
 101
 102  private:
 103   class ModelEntry;
 104
 105   // Notification that a model entry has fetched its icon.
 106   void FaviconAvailable(ModelEntry* entry);
 107
 108   // TemplateURLServiceObserver notification.
 109   void OnTemplateURLServiceChanged() override;
 110
 111   // Removes the entry at |index| from |entries_| and returns the removed item.
 112   scoped_ptr<ModelEntry> RemoveEntry(int index);
 113
 114   // Adds |entry| to |entries_| at |index| and takes ownership.
 115   void AddEntry(int index, scoped_ptr<ModelEntry> entry);
 116
 117   ui::TableModelObserver* observer_;
 118
 119   // The entries.
 120   std::vector<ModelEntry*> entries_;
 121
 122   // The model we're displaying entries from.
 123   TemplateURLService* template_url_service_;
 124
 125   FaviconService* favicon_service_;
 126
 127   // Index of the last search engine in entries_. This is used to determine the
 128   // group boundaries.
 129   int last_search_engine_index_;
 130
 131   // Index of the last other engine in entries_. This is used to determine the
 132   // group boundaries.
 133   int last_other_engine_index_;
 134
 135   DISALLOW_COPY_AND_ASSIGN(TemplateURLTableModel);
 136 };
 137
 138
 139 #endif  // CHROME_BROWSER_UI_SEARCH_ENGINES_TEMPLATE_URL_TABLE_MODEL_H_