include/wx/msw/listctrl.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/listctrl.h
   3 // Purpose:     wxListCtrl class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_LISTCTRL_H_
  13 #define _WX_LISTCTRL_H_
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  16     #pragma interface "listctrl.h"
  17 #endif
  18
  19 #if wxUSE_LISTCTRL
  20
  21 #include "wx/control.h"
  22 #include "wx/event.h"
  23 #include "wx/hash.h"
  24 #include "wx/textctrl.h"
  25
  26
  27 class WXDLLEXPORT wxImageList;
  28
  29 /*
  30     The wxListCtrl can show lists of items in four different modes:
  31     wxLC_LIST:   multicolumn list view, with optional small icons (icons could be
  32                  optional for some platforms). Columns are computed automatically,
  33                  i.e. you don't set columns as in wxLC_REPORT. In other words,
  34                  the list wraps, unlike a wxListBox.
  35     wxLC_REPORT: single or multicolumn report view (with optional header)
  36     wxLC_ICON:   large icon view, with optional labels
  37     wxLC_SMALL_ICON: small icon view, with optional labels
  38
  39     You can change the style dynamically, either with SetSingleStyle or
  40     SetWindowStyleFlag.
  41
  42     Further window styles:
  43
  44     wxLC_ALIGN_TOP          icons align to the top (default)
  45     wxLC_ALIGN_LEFT         icons align to the left
  46     wxLC_AUTOARRANGE        icons arrange themselves
  47     wxLC_USER_TEXT          the app provides label text on demand, except for column headers
  48     wxLC_EDIT_LABELS        labels are editable: app will be notified.
  49     wxLC_NO_HEADER          no header in report mode
  50     wxLC_NO_SORT_HEADER     can't click on header
  51     wxLC_SINGLE_SEL         single selection
  52     wxLC_SORT_ASCENDING     sort ascending (must still supply a comparison callback in SortItems)
  53     wxLC_SORT_DESCENDING    sort descending (ditto)
  54
  55     Items are referred to by their index (position in the list starting from zero).
  56
  57     Label text is supplied via insertion/setting functions and is stored by the
  58     control, unless the wxLC_USER_TEXT style has been specified, in which case
  59     the app will be notified when text is required (see sample).
  60
  61     Images are dealt with by (optionally) associating 3 image lists with the control.
  62     Zero-based indexes into these image lists indicate which image is to be used for
  63     which item. Each image in an image list can contain a mask, and can be made out
  64     of either a bitmap, two bitmaps or an icon. See ImagList.h for more details.
  65
  66     Notifications are passed via the wxWidgets 2.0 event system, or using virtual
  67     functions in wxWidgets 1.66.
  68
  69     See the sample wxListCtrl app for API usage.
  70
  71     TODO:
  72      - addition of further convenience functions
  73        to avoid use of wxListItem in some functions
  74      - state/overlay images: probably not needed.
  75      - in Win95, you can be called back to supply other information
  76        besides text, such as state information. This saves no memory
  77        and is probably superfluous to requirements.
  78      - testing of whole API, extending current sample.
  79
  80
  81  */
  82
  83 class WXDLLEXPORT wxListCtrl: public wxControl
  84 {
  85 public:
  86     /*
  87      * Public interface
  88      */
  89
  90     wxListCtrl() { Init(); }
  91
  92     wxListCtrl(wxWindow *parent,
  93                wxWindowID id = -1,
  94                const wxPoint& pos = wxDefaultPosition,
  95                const wxSize& size = wxDefaultSize,
  96                long style = wxLC_ICON,
  97                const wxValidator& validator = wxDefaultValidator,
  98                const wxString& name = _T("wxListCtrl"))
  99     {
 100         Init();
 101
 102         Create(parent, id, pos, size, style, validator, name);
 103     }
 104
 105     virtual ~wxListCtrl();
 106
 107     bool Create(wxWindow *parent,
 108                 wxWindowID id = -1,
 109                 const wxPoint& pos = wxDefaultPosition,
 110                 const wxSize& size = wxDefaultSize,
 111                 long style = wxLC_ICON,
 112                 const wxValidator& validator = wxDefaultValidator,
 113                 const wxString& name = _T("wxListCtrl"));
 114
 115
 116     // Attributes
 117     ////////////////////////////////////////////////////////////////////////////
 118
 119     // Set the control colours
 120     bool SetForegroundColour(const wxColour& col);
 121     bool SetBackgroundColour(const wxColour& col);
 122
 123     // Gets information about this column
 124     bool GetColumn(int col, wxListItem& item) const;
 125
 126     // Sets information about this column
 127     bool SetColumn(int col, wxListItem& item) ;
 128
 129     // Gets the column width
 130     int GetColumnWidth(int col) const;
 131
 132     // Sets the column width
 133     bool SetColumnWidth(int col, int width) ;
 134
 135     // Gets the number of items that can fit vertically in the
 136     // visible area of the list control (list or report view)
 137     // or the total number of items in the list control (icon
 138     // or small icon view)
 139     int GetCountPerPage() const;
 140
 141     // return the total area occupied by all the items (icon/small icon only)
 142     wxRect GetViewRect() const;
 143
 144     // Gets the edit control for editing labels.
 145     wxTextCtrl* GetEditControl() const;
 146
 147     // Gets information about the item
 148     bool GetItem(wxListItem& info) const ;
 149
 150     // Sets information about the item
 151     bool SetItem(wxListItem& info) ;
 152
 153     // Sets a string field at a particular column
 154     long SetItem(long index, int col, const wxString& label, int imageId = -1);
 155
 156     // Gets the item state
 157     int  GetItemState(long item, long stateMask) const ;
 158
 159     // Sets the item state
 160     bool SetItemState(long item, long state, long stateMask) ;
 161
 162     // Sets the item image
 163     bool SetItemImage(long item, int image, int selImage) ;
 164
 165     // Gets the item text
 166     wxString GetItemText(long item) const ;
 167
 168     // Sets the item text
 169     void SetItemText(long item, const wxString& str) ;
 170
 171     // Gets the item data
 172     long GetItemData(long item) const ;
 173
 174     // Sets the item data
 175     bool SetItemData(long item, long data) ;
 176
 177     // Gets the item rectangle
 178     bool GetItemRect(long item, wxRect& rect, int code = wxLIST_RECT_BOUNDS) const ;
 179
 180     // Gets the item position
 181     bool GetItemPosition(long item, wxPoint& pos) const ;
 182
 183     // Sets the item position
 184     bool SetItemPosition(long item, const wxPoint& pos) ;
 185
 186     // Gets the number of items in the list control
 187     int GetItemCount() const;
 188
 189     // Gets the number of columns in the list control
 190     int GetColumnCount() const { return m_colCount; }
 191
 192     // get the horizontal and vertical components of the item spacing
 193     wxSize GetItemSpacing() const;
 194
 195     // Foreground colour of an item.
 196     void SetItemTextColour( long item, const wxColour& col);
 197     wxColour GetItemTextColour( long item ) const;
 198
 199     // Background colour of an item.
 200     void SetItemBackgroundColour( long item, const wxColour &col);
 201     wxColour GetItemBackgroundColour( long item ) const;
 202
 203     // Gets the number of selected items in the list control
 204     int GetSelectedItemCount() const;
 205
 206     // Gets the text colour of the listview
 207     wxColour GetTextColour() const;
 208
 209     // Sets the text colour of the listview
 210     void SetTextColour(const wxColour& col);
 211
 212     // Gets the index of the topmost visible item when in
 213     // list or report view
 214     long GetTopItem() const ;
 215
 216     // Add or remove a single window style
 217     void SetSingleStyle(long style, bool add = TRUE) ;
 218
 219     // Set the whole window style
 220     void SetWindowStyleFlag(long style) ;
 221
 222     // Searches for an item, starting from 'item'.
 223     // item can be -1 to find the first item that matches the
 224     // specified flags.
 225     // Returns the item or -1 if unsuccessful.
 226     long GetNextItem(long item, int geometry = wxLIST_NEXT_ALL, int state = wxLIST_STATE_DONTCARE) const ;
 227
 228     // Gets one of the three image lists
 229     wxImageList *GetImageList(int which) const ;
 230
 231     // Sets the image list
 232     // N.B. There's a quirk in the Win95 list view implementation.
 233     // If in wxLC_LIST mode, it'll *still* display images by the labels if
 234     // there's a small-icon image list set for the control - even though you
 235     // haven't specified wxLIST_MASK_IMAGE when inserting.
 236     // So you have to set a NULL small-icon image list to be sure that
 237     // the wxLC_LIST mode works without icons. Of course, you may want icons...
 238     void SetImageList(wxImageList *imageList, int which) ;
 239     void AssignImageList(wxImageList *imageList, int which) ;
 240
 241     // are we in report mode?
 242     bool InReportView() const { return HasFlag(wxLC_REPORT); }
 243
 244     // are we in virtual report mode?
 245     bool IsVirtual() const { return HasFlag(wxLC_VIRTUAL); }
 246
 247     // refresh items selectively (only useful for virtual list controls)
 248     void RefreshItem(long item);
 249     void RefreshItems(long itemFrom, long itemTo);
 250
 251     // Operations
 252     ////////////////////////////////////////////////////////////////////////////
 253
 254     // Arranges the items
 255     bool Arrange(int flag = wxLIST_ALIGN_DEFAULT);
 256
 257     // Deletes an item
 258     bool DeleteItem(long item);
 259
 260     // Deletes all items
 261     bool DeleteAllItems() ;
 262
 263     // Deletes a column
 264     bool DeleteColumn(int col);
 265
 266     // Deletes all columns
 267     bool DeleteAllColumns();
 268
 269     // Clears items, and columns if there are any.
 270     void ClearAll();
 271
 272     // Edit the label
 273     wxTextCtrl* EditLabel(long item, wxClassInfo* textControlClass = CLASSINFO(wxTextCtrl));
 274
 275     // End label editing, optionally cancelling the edit
 276     bool EndEditLabel(bool cancel);
 277
 278     // Ensures this item is visible
 279     bool EnsureVisible(long item) ;
 280
 281     // Find an item whose label matches this string, starting from the item after 'start'
 282     // or the beginning if 'start' is -1.
 283     long FindItem(long start, const wxString& str, bool partial = FALSE);
 284
 285     // Find an item whose data matches this data, starting from the item after 'start'
 286     // or the beginning if 'start' is -1.
 287     long FindItem(long start, long data);
 288
 289     // Find an item nearest this position in the specified direction, starting from
 290     // the item after 'start' or the beginning if 'start' is -1.
 291     long FindItem(long start, const wxPoint& pt, int direction);
 292
 293     // Determines which item (if any) is at the specified point,
 294     // giving details in 'flags' (see wxLIST_HITTEST_... flags above)
 295     long HitTest(const wxPoint& point, int& flags);
 296
 297     // Inserts an item, returning the index of the new item if successful,
 298     // -1 otherwise.
 299     long InsertItem(wxListItem& info);
 300
 301     // Insert a string item
 302     long InsertItem(long index, const wxString& label);
 303
 304     // Insert an image item
 305     long InsertItem(long index, int imageIndex);
 306
 307     // Insert an image/string item
 308     long InsertItem(long index, const wxString& label, int imageIndex);
 309
 310     // For list view mode (only), inserts a column.
 311     long InsertColumn(long col, wxListItem& info);
 312
 313     long InsertColumn(long col,
 314                       const wxString& heading,
 315                       int format = wxLIST_FORMAT_LEFT,
 316                       int width = -1);
 317
 318     // set the number of items in a virtual list control
 319     void SetItemCount(long count);
 320
 321     // Scrolls the list control. If in icon, small icon or report view mode,
 322     // x specifies the number of pixels to scroll. If in list view mode, x
 323     // specifies the number of columns to scroll.
 324     // If in icon, small icon or list view mode, y specifies the number of pixels
 325     // to scroll. If in report view mode, y specifies the number of lines to scroll.
 326     bool ScrollList(int dx, int dy);
 327
 328     // Sort items.
 329
 330     // fn is a function which takes 3 long arguments: item1, item2, data.
 331     // item1 is the long data associated with a first item (NOT the index).
 332     // item2 is the long data associated with a second item (NOT the index).
 333     // data is the same value as passed to SortItems.
 334     // The return value is a negative number if the first item should precede the second
 335     // item, a positive number of the second item should precede the first,
 336     // or zero if the two items are equivalent.
 337
 338     // data is arbitrary data to be passed to the sort function.
 339     bool SortItems(wxListCtrlCompare fn, long data);
 340
 341     // IMPLEMENTATION
 342     virtual bool MSWCommand(WXUINT param, WXWORD id);
 343     virtual bool MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result);
 344
 345     // bring the control in sync with current m_windowStyle value
 346     void UpdateStyle();
 347
 348     // Event handlers
 349     ////////////////////////////////////////////////////////////////////////////
 350     // Necessary for drawing hrules and vrules, if specified
 351     void OnPaint(wxPaintEvent& event);
 352
 353
 354     virtual bool ShouldInheritColours() const { return false; }
 355
 356     virtual wxVisualAttributes GetDefaultAttributes() const
 357     {
 358         return GetClassDefaultAttributes(GetWindowVariant());
 359     }
 360
 361     static wxVisualAttributes
 362     GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
 363
 364
 365     // obsolete stuff, for compatibility only -- don't use
 366     wxDEPRECATED( int GetItemSpacing(bool isSmall) const);
 367
 368 protected:
 369     // common part of all ctors
 370     void Init();
 371
 372     // free memory taken by all internal data
 373     void FreeAllInternalData();
 374
 375     // convert our styles to Windows
 376     virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
 377
 378
 379     wxTextCtrl*       m_textCtrl;        // The control used for editing a label
 380     wxImageList *     m_imageListNormal; // The image list for normal icons
 381     wxImageList *     m_imageListSmall;  // The image list for small icons
 382     wxImageList *     m_imageListState;  // The image list state icons (not implemented yet)
 383     bool              m_ownsImageListNormal,
 384                       m_ownsImageListSmall,
 385                       m_ownsImageListState;
 386
 387     int               m_colCount;   // Windows doesn't have GetColumnCount so must
 388                                     // keep track of inserted/deleted columns
 389     long              m_count;      // Keep track of item count to save calls to
 390                                     // ListView_GetItemCount
 391     bool              m_ignoreChangeMessages;
 392
 393     // TRUE if we have any internal data (user data & attributes)
 394     bool m_AnyInternalData;
 395
 396     // TRUE if we have any items with custom attributes
 397     bool m_hasAnyAttr;
 398
 399     // these functions are only used for virtual list view controls, i.e. the
 400     // ones with wxLC_VIRTUAL style
 401
 402     // return the text for the given column of the given item
 403     virtual wxString OnGetItemText(long item, long column) const;
 404
 405     // return the icon for the given item
 406     virtual int OnGetItemImage(long item) const;
 407
 408     // return the attribute for the item (may return NULL if none)
 409     virtual wxListItemAttr *OnGetItemAttr(long item) const;
 410
 411 private:
 412     // process NM_CUSTOMDRAW notification message
 413     WXLPARAM OnCustomDraw(WXLPARAM lParam);
 414
 415     DECLARE_DYNAMIC_CLASS(wxListCtrl)
 416     DECLARE_EVENT_TABLE()
 417     DECLARE_NO_COPY_CLASS(wxListCtrl)
 418 };
 419
 420 #endif // wxUSE_LISTCTRL
 421
 422 #endif // _WX_LISTCTRL_H_
 423