interface/wx/filehistory.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        filehistory.h
   3 // Purpose:     wxFileHistory class
   4 // Author:      wxWidgets team
   5 // Licence:     wxWindows licence
   6 /////////////////////////////////////////////////////////////////////////////
   7
   8 /**
   9     @class wxFileHistory
  10
  11     The wxFileHistory encapsulates a user interface convenience, the list of
  12     most recently visited files as shown on a menu (usually the File menu).
  13
  14     wxFileHistory can manage one or more file menus. More than one menu may be
  15     required in an MDI application, where the file history should appear on
  16     each MDI child menu as well as the MDI parent frame.
  17
  18     @library{wxcore}
  19     @category{docview}
  20
  21     @see @ref overview_docview, wxDocManager
  22 */
  23 class wxFileHistory : public wxObject
  24 {
  25 public:
  26     /**
  27         Constructor. Pass the maximum number of files that should be stored and
  28         displayed.
  29
  30         @a idBase defaults to wxID_FILE1 and represents the id given to the
  31         first history menu item. Since menu items can't share the same ID you
  32         should change @a idBase (to one of your own defined IDs) when using
  33         more than one wxFileHistory in your application.
  34     */
  35     wxFileHistory(size_t maxFiles = 9, wxWindowID idBase = wxID_FILE1);
  36
  37     /**
  38         Destructor.
  39     */
  40     virtual ~wxFileHistory();
  41
  42     /**
  43         Adds a file to the file history list, if the object has a pointer to an
  44         appropriate file menu.
  45     */
  46     virtual void AddFileToHistory(const wxString& filename);
  47
  48     /**
  49         Appends the files in the history list, to all menus managed by the file
  50         history object.
  51     */
  52     virtual void AddFilesToMenu();
  53     /**
  54         Appends the files in the history list, to the given menu only.
  55     */
  56     virtual void AddFilesToMenu(wxMenu* menu);
  57
  58     /**
  59         Returns the base identifier for the range used for appending items.
  60     */
  61     wxWindowID GetBaseId() const;
  62
  63     /**
  64         Returns the number of files currently stored in the file history.
  65     */
  66     virtual size_t GetCount() const;
  67
  68     /**
  69         Returns the file at this index (zero-based).
  70     */
  71     virtual wxString GetHistoryFile(size_t index) const;
  72
  73     /**
  74         Returns the maximum number of files that can be stored.
  75     */
  76     virtual int GetMaxFiles() const;
  77
  78     /**
  79         Returns the list of menus that are managed by this file history object.
  80
  81         @see UseMenu()
  82     */
  83     const wxList& GetMenus() const;
  84
  85     /**
  86         Loads the file history from the given config object. This function
  87         should be called explicitly by the application.
  88
  89         @see wxConfigBase
  90     */
  91     virtual void Load(const wxConfigBase& config);
  92
  93     /**
  94         Removes the specified file from the history.
  95     */
  96     virtual void RemoveFileFromHistory(size_t i);
  97
  98     /**
  99         Removes this menu from the list of those managed by this object.
 100     */
 101     virtual void RemoveMenu(wxMenu* menu);
 102
 103     /**
 104         Saves the file history into the given config object. This must be
 105         called explicitly by the application.
 106
 107         @see wxConfigBase
 108     */
 109     virtual void Save(wxConfigBase& config);
 110
 111     /**
 112         Sets the base identifier for the range used for appending items.
 113     */
 114     void SetBaseId(wxWindowID baseId);
 115
 116     /**
 117         Adds this menu to the list of those menus that are managed by this file
 118         history object. Also see AddFilesToMenu() for initializing the menu
 119         with filenames that are already in the history when this function is
 120         called, as this is not done automatically.
 121     */
 122     virtual void UseMenu(wxMenu* menu);
 123 };