include/wx/msw/menu.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        menu.h
   3 // Purpose:     wxMenu, wxMenuBar classes
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin (wxMenuItem is now in separate file)
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_MENU_H_
  13 #define _WX_MENU_H_
  14
  15 #ifdef __GNUG__
  16     #pragma interface "menu.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20 #include "wx/event.h"
  21 #include "wx/dynarray.h"
  22 #include "wx/string.h"
  23
  24 #if wxUSE_ACCEL
  25 #include "wx/accel.h"
  26 #endif // wxUSE_ACCEL
  27
  28 class WXDLLEXPORT wxMenuItem;
  29 class WXDLLEXPORT wxMenuBar;
  30 class WXDLLEXPORT wxMenu;
  31 class WXDLLEXPORT wxFrame;
  32
  33 WXDLLEXPORT_DATA(extern const wxChar*) wxEmptyString;
  34
  35 // ----------------------------------------------------------------------------
  36 // Menu
  37 // ----------------------------------------------------------------------------
  38
  39 class WXDLLEXPORT wxMenu : public wxEvtHandler
  40 {
  41     DECLARE_DYNAMIC_CLASS(wxMenu)
  42
  43 public:
  44     // ctors & dtor
  45     wxMenu(const wxString& title,
  46            const wxFunction func)
  47     {
  48         Init(title, func);
  49     }
  50
  51     wxMenu( long WXUNUSED(style) )
  52     {
  53         Init( wxEmptyString );
  54     }
  55
  56     wxMenu(const wxString& title = wxEmptyString, long WXUNUSED(style) = 0)
  57     {
  58         Init(title);
  59     }
  60
  61     virtual ~wxMenu();
  62
  63     // construct menu
  64         // append a separator to the menu
  65     void AppendSeparator();
  66         // append a normal item to the menu
  67     void Append(int id, const wxString& label,
  68                 const wxString& helpString = wxEmptyString,
  69                 bool checkable = FALSE);
  70         // append a submenu
  71     void Append(int id, const wxString& label,
  72                 wxMenu *submenu,
  73                 const wxString& helpString = wxEmptyString);
  74         // append anything (create wxMenuItem first)
  75     void Append(wxMenuItem *pItem);
  76
  77         // insert a break in the menu
  78     void Break();
  79
  80         // delete an item
  81         // If it's a submenu, menu is not destroyed.
  82         // VZ: why? shouldn't it return "wxMenu *" then?
  83     void Delete(int id);
  84
  85     // client data
  86     void SetClientData(void* clientData) { m_clientData = clientData; }
  87     void* GetClientData() const { return m_clientData; }
  88
  89     // menu item control
  90         // enable/disable item
  91     void Enable(int id, bool enable);
  92         // TRUE if enabled
  93     bool IsEnabled(int id) const;
  94
  95         // check/uncheck item - only for checkable items, of course
  96     void Check(int id, bool check);
  97         // TRUE if checked
  98     bool IsChecked(int id) const;
  99
 100     // other properties
 101         // the menu title
 102     void SetTitle(const wxString& label);
 103     const wxString GetTitle() const;
 104         // the item label
 105     void SetLabel(int id, const wxString& label);
 106     wxString GetLabel(int id) const;
 107         // help string
 108     virtual void SetHelpString(int id, const wxString& helpString);
 109     virtual wxString GetHelpString(int id) const;
 110
 111         // get the list of items
 112     wxList& GetItems() const { return (wxList &)m_menuItems; }
 113
 114     // find item
 115         // returns id of the item matching the given string or wxNOT_FOUND
 116     virtual int FindItem(const wxString& itemString) const;
 117         // returns NULL if not found
 118     wxMenuItem* FindItem(int id) const { return FindItemForId(id); }
 119         // find wxMenuItem by ID, and item's menu too if itemMenu is !NULL
 120     wxMenuItem *FindItemForId(int itemId, wxMenu **itemMenu = NULL) const;
 121
 122     // Updates the UI for a menu and all submenus recursively. source is the
 123     // object that has the update event handlers defined for it. If NULL, the
 124     // menu or associated window will be used.
 125     void UpdateUI(wxEvtHandler* source = (wxEvtHandler*)NULL);
 126
 127     bool ProcessCommand(wxCommandEvent& event);
 128
 129     virtual void SetParent(wxEvtHandler *parent) { m_parent = parent; }
 130     void SetEventHandler(wxEvtHandler *handler) { m_eventHandler = handler; }
 131     wxEvtHandler *GetEventHandler() const { return m_eventHandler; }
 132
 133     // IMPLEMENTATION
 134     bool MSWCommand(WXUINT param, WXWORD id);
 135
 136     void SetInvokingWindow(wxWindow *pWin) { m_pInvokingWindow = pWin; }
 137     wxWindow *GetInvokingWindow() const { return m_pInvokingWindow; }
 138
 139     // semi-private accessors
 140         // get the window which contains this menu
 141     wxWindow *GetWindow() const;
 142         // get the menu handle
 143     WXHMENU GetHMenu() const;
 144
 145     // only for wxMenuBar
 146     void Attach(wxMenuBar *menubar);
 147     void Detach();
 148
 149 #if wxUSE_ACCEL
 150     size_t GetAccelCount() const { return m_accelKeyCodes.GetCount(); }
 151     size_t CopyAccels(wxAcceleratorEntry *accels) const;
 152 #endif // wxUSE_ACCEL
 153
 154     wxFunction GetCallback() const { return m_callback; }
 155     void Callback(const wxFunction func) { m_callback = func; }
 156     wxFunction        m_callback;
 157
 158 #ifdef WXWIN_COMPATIBILITY
 159     // compatibility: these functions are deprecated
 160     bool Enabled(int id) const { return IsEnabled(id); }
 161     bool Checked(int id) const { return IsChecked(id); }
 162
 163 #endif // WXWIN_COMPATIBILITY
 164
 165 private:
 166     // common part of all ctors
 167     void Init(const wxString& title, const wxFunction func = NULL );
 168
 169     bool              m_doBreak;
 170
 171     // This is used when m_hMenu is NULL because we don't want to
 172     // delete it in ~wxMenu (it's been added to a parent menu).
 173     // But we'll still need the handle for other purposes.
 174     // Might be better to have a flag saying whether it's deleteable or not.
 175     WXHMENU           m_savehMenu ; // Used for Enable() on popup
 176     WXHMENU           m_hMenu;
 177
 178     int               m_noItems;
 179     wxString          m_title;
 180     wxMenu *          m_topLevelMenu;
 181     wxMenuBar *       m_menuBar;
 182     wxList            m_menuItems;
 183     wxEvtHandler *    m_parent;
 184     wxEvtHandler *    m_eventHandler;
 185     wxWindow         *m_pInvokingWindow;
 186     void*             m_clientData;
 187
 188 #if wxUSE_ACCEL
 189     // the accelerators data
 190     wxArrayInt        m_accelKeyCodes, m_accelFlags, m_accelIds;
 191 #endif // wxUSE_ACCEL
 192 };
 193
 194 // ----------------------------------------------------------------------------
 195 // Menu Bar (a la Windows)
 196 // ----------------------------------------------------------------------------
 197
 198 class WXDLLEXPORT wxMenuBar : public wxEvtHandler
 199 {
 200     DECLARE_DYNAMIC_CLASS(wxMenuBar)
 201
 202 public:
 203     // ctors & dtor
 204         // default constructor
 205     wxMenuBar();
 206         // unused under MSW
 207     wxMenuBar(long style);
 208         // menubar takes ownership of the menus arrays but copies the titles
 209     wxMenuBar(int n, wxMenu *menus[], const wxString titles[]);
 210     virtual ~wxMenuBar();
 211
 212     // menubar construction
 213     WXHMENU Create();
 214     void Append(wxMenu *menu, const wxString& title);
 215     virtual void Delete(wxMenu *menu, int index = 0); /* Menu not destroyed */
 216
 217     // state control
 218     // NB: must only be used AFTER menu has been attached to frame,
 219     //     otherwise use individual menus to enable/disable items
 220         // enable the item
 221     void Enable(int id, bool enable);
 222         // TRUE if item enabled
 223     bool IsEnabled(int id) const;
 224         //
 225     void EnableTop(int pos, bool enable);
 226
 227         // works only with checkable items
 228     void Check(int id, bool check);
 229         // TRUE if checked
 230     bool IsChecked(int id) const;
 231
 232     void SetLabel(int id, const wxString& label) ;
 233     wxString GetLabel(int id) const ;
 234
 235     virtual void SetHelpString(int id, const wxString& helpString);
 236     virtual wxString GetHelpString(int id) const ;
 237
 238     void SetLabelTop(int pos, const wxString& label) ;
 239     wxString GetLabelTop(int pos) const ;
 240
 241     // notifications: return FALSE to prevent the menu from being
 242     // appended/deleted
 243     virtual bool OnAppend(wxMenu *menu, const wxChar *title);
 244     virtual bool OnDelete(wxMenu *menu, int index);
 245
 246     // item search
 247         // by menu and item names, returns wxNOT_FOUND if not found
 248     virtual int FindMenuItem(const wxString& menuString,
 249                              const wxString& itemString) const;
 250         // returns NULL if not found
 251     wxMenuItem* FindItem(int id) const { return FindItemForId(id); }
 252         // returns NULL if not found, fills menuForItem if !NULL
 253     wxMenuItem *FindItemForId(int itemId, wxMenu **menuForItem = NULL) const;
 254
 255     // submenus access
 256     int GetMenuCount() const { return m_menuCount; }
 257     wxMenu *GetMenu(int i) const { return m_menus[i]; }
 258
 259     void SetEventHandler(wxEvtHandler *handler) { m_eventHandler = handler; }
 260     wxEvtHandler *GetEventHandler() { return m_eventHandler; }
 261
 262 #ifdef WXWIN_COMPATIBILITY
 263     // compatibility: these functions are deprecated
 264     bool Enabled(int id) const { return IsEnabled(id); }
 265     bool Checked(int id) const { return IsChecked(id); }
 266 #endif // WXWIN_COMPATIBILITY
 267
 268     // IMPLEMENTATION
 269         // returns TRUE if we're attached to a frame
 270     bool IsAttached() const { return m_menuBarFrame != NULL; }
 271         // get the frame we live in
 272     wxFrame *GetFrame() const { return m_menuBarFrame; }
 273         // attach to a frame
 274     void Attach(wxFrame *frame);
 275
 276 #if wxUSE_ACCEL
 277         // get the accel table for the menus
 278     const wxAcceleratorTable& GetAccelTable() const { return m_accelTable; }
 279 #endif // wxUSE_ACCEL
 280
 281         // get the menu handle
 282     WXHMENU GetHMenu() const { return m_hMenu; }
 283
 284 protected:
 285     // common part of all ctors
 286     void Init();
 287
 288     // if the menubar is modified, the display is not updated automatically,
 289     // call this function to update it (m_menuBarFrame should be !NULL)
 290     void Refresh();
 291
 292     wxEvtHandler *m_eventHandler;
 293     int           m_menuCount;
 294     wxMenu      **m_menus;
 295     wxString     *m_titles;
 296     wxFrame      *m_menuBarFrame;
 297     WXHMENU       m_hMenu;
 298
 299 #if wxUSE_ACCEL
 300     // the accelerator table for all accelerators in all our menus
 301     wxAcceleratorTable m_accelTable;
 302 #endif // wxUSE_ACCEL
 303 };
 304
 305 #endif // _WX_MENU_H_