include/wx/motif/listctrl.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        listctrl.h
   3 // Purpose:     wxListCtrl class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   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 #ifdef __GNUG__
  16 #pragma interface "listctrl.h"
  17 #endif
  18
  19 #include "wx/control.h"
  20 #include "wx/event.h"
  21 #include "wx/imaglist.h"
  22
  23 /*
  24     The wxListCtrl can show lists of items in four different modes:
  25     wxLC_LIST:   multicolumn list view, with optional small icons (icons could be
  26                  optional for some platforms). Columns are computed automatically,
  27                  i.e. you don't set columns as in wxLC_REPORT. In other words,
  28                  the list wraps, unlike a wxListBox.
  29     wxLC_REPORT: single or multicolumn report view (with optional header)
  30     wxLC_ICON:   large icon view, with optional labels
  31     wxLC_SMALL_ICON: small icon view, with optional labels
  32
  33     You can change the style dynamically, either with SetSingleStyle or
  34     SetWindowStyleFlag.
  35
  36     Further window styles:
  37
  38     wxLC_ALIGN_TOP          icons align to the top (default)
  39     wxLC_ALIGN_LEFT         icons align to the left
  40     wxLC_AUTOARRANGE        icons arrange themselves
  41     wxLC_USER_TEXT          the app provides label text on demand, except for column headers
  42     wxLC_EDIT_LABELS        labels are editable: app will be notified.
  43     wxLC_NO_HEADER          no header in report mode
  44     wxLC_NO_SORT_HEADER     can't click on header
  45     wxLC_SINGLE_SEL         single selection
  46     wxLC_SORT_ASCENDING     sort ascending (must still supply a comparison callback in SortItems)
  47     wxLC_SORT_DESCENDING    sort descending (ditto)
  48
  49     Items are referred to by their index (position in the list starting from zero).
  50
  51     Label text is supplied via insertion/setting functions and is stored by the
  52     control, unless the wxLC_USER_TEXT style has been specified, in which case
  53     the app will be notified when text is required (see sample).
  54
  55     Images are dealt with by (optionally) associating 3 image lists with the control.
  56     Zero-based indexes into these image lists indicate which image is to be used for
  57     which item. Each image in an image list can contain a mask, and can be made out
  58     of either a bitmap, two bitmaps or an icon. See ImagList.h for more details.
  59
  60     Notifications are passed via the wxWindows 2.0 event system.
  61
  62     See the sample wxListCtrl app for API usage.
  63
  64  */
  65
  66 // Mask flags to tell app/GUI what fields of wxListItem are valid
  67 #define wxLIST_MASK_STATE           0x0001
  68 #define wxLIST_MASK_TEXT            0x0002
  69 #define wxLIST_MASK_IMAGE           0x0004
  70 #define wxLIST_MASK_DATA            0x0008
  71 #define wxLIST_SET_ITEM             0x0010
  72 #define wxLIST_MASK_WIDTH           0x0020
  73 #define wxLIST_MASK_FORMAT          0x0040
  74
  75 // State flags for indicating the state of an item
  76 #define wxLIST_STATE_DONTCARE       0x0000
  77 #define wxLIST_STATE_DROPHILITED    0x0001
  78 #define wxLIST_STATE_FOCUSED        0x0002
  79 #define wxLIST_STATE_SELECTED       0x0004
  80 #define wxLIST_STATE_CUT            0x0008
  81
  82 // Hit test flags, used in HitTest
  83 #define wxLIST_HITTEST_ABOVE            0x0001  // Above the client area.
  84 #define wxLIST_HITTEST_BELOW            0x0002  // Below the client area.
  85 #define wxLIST_HITTEST_NOWHERE          0x0004  // In the client area but below the last item.
  86 #define wxLIST_HITTEST_ONITEMICON       0x0020  // On the bitmap associated with an item.
  87 #define wxLIST_HITTEST_ONITEMLABEL      0x0080  // On the label (string) associated with an item.
  88 #define wxLIST_HITTEST_ONITEMRIGHT      0x0100  // In the area to the right of an item.
  89 #define wxLIST_HITTEST_ONITEMSTATEICON  0x0200  // On the state icon for a tree view item that is in a user-defined state.
  90 #define wxLIST_HITTEST_TOLEFT           0x0400  // To the left of the client area.
  91 #define wxLIST_HITTEST_TORIGHT          0x0800  // To the right of the client area.
  92
  93 #define wxLIST_HITTEST_ONITEM (wxLIST_HITTEST_ONITEMICON | wxLIST_HITTEST_ONITEMLABEL wxLIST_HITTEST_ONITEMSTATEICON)
  94
  95 // Flags for GetNextItem
  96 enum {
  97     wxLIST_NEXT_ABOVE,          // Searches for an item above the specified item
  98     wxLIST_NEXT_ALL,            // Searches for subsequent item by index
  99     wxLIST_NEXT_BELOW,          // Searches for an item below the specified item
 100     wxLIST_NEXT_LEFT,           // Searches for an item to the left of the specified item
 101     wxLIST_NEXT_RIGHT,          // Searches for an item to the right of the specified item
 102 };
 103
 104 // Alignment flags for Arrange
 105 enum {
 106     wxLIST_ALIGN_DEFAULT,
 107     wxLIST_ALIGN_LEFT,
 108     wxLIST_ALIGN_TOP,
 109     wxLIST_ALIGN_SNAP_TO_GRID
 110 };
 111
 112 // Column format
 113 enum {
 114     wxLIST_FORMAT_LEFT,
 115     wxLIST_FORMAT_RIGHT,
 116     wxLIST_FORMAT_CENTRE,
 117     wxLIST_FORMAT_CENTER = wxLIST_FORMAT_CENTRE
 118 };
 119
 120 // Autosize values for SetColumnWidth
 121 enum {
 122     wxLIST_AUTOSIZE = -1,
 123     wxLIST_AUTOSIZE_USEHEADER = -2
 124 };
 125
 126 // Flag values for GetItemRect
 127 enum {
 128     wxLIST_RECT_BOUNDS,
 129     wxLIST_RECT_ICON,
 130     wxLIST_RECT_LABEL
 131 };
 132
 133 // Flag values for FindItem
 134 enum {
 135     wxLIST_FIND_UP,
 136     wxLIST_FIND_DOWN,
 137     wxLIST_FIND_LEFT,
 138     wxLIST_FIND_RIGHT
 139 };
 140
 141 // wxListItem: data representing an item, or report field.
 142 // It also doubles up to represent entire column information
 143 // when inserting or setting a column.
 144 class WXDLLEXPORT wxListItem: public wxObject
 145 {
 146  DECLARE_DYNAMIC_CLASS(wxListItem)
 147 public:
 148     long            m_mask;     // Indicates what fields are valid
 149     long            m_itemId;   // The zero-based item position
 150     int             m_col;      // Zero-based column, if in report mode
 151     long            m_state;    // The state of the item
 152     long            m_stateMask; // Which flags of m_state are valid (uses same flags)
 153     wxString        m_text;     // The label/header text
 154     int             m_image;    // The zero-based index into an image list
 155     long            m_data;     // App-defined data
 156
 157     // For columns only
 158     int             m_format;   // left, right, centre
 159     int             m_width;    // width of column
 160
 161     wxListItem();
 162 };
 163
 164 // type of compare function for wxListCtrl sort operation
 165 typedef int (*wxListCtrlCompare)(long item1, long item2, long sortData);
 166
 167 class WXDLLEXPORT wxListCtrl: public wxControl
 168 {
 169   DECLARE_DYNAMIC_CLASS(wxListCtrl)
 170  public:
 171   /*
 172    * Public interface
 173    */
 174
 175   wxListCtrl();
 176
 177   inline wxListCtrl(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
 178             long style = wxLC_ICON, const wxValidator& validator = wxDefaultValidator,
 179             const wxString& name = "listCtrl")
 180   {
 181     Create(parent, id, pos, size, style, validator, name);
 182   }
 183   ~wxListCtrl();
 184
 185   bool Create(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize,
 186             long style = wxLC_ICON, const wxValidator& validator = wxDefaultValidator, const wxString& name = "wxListCtrl");
 187
 188
 189   // Attributes
 190   ////////////////////////////////////////////////////////////////////////////
 191
 192   // Gets information about this column
 193   bool GetColumn(int col, wxListItem& item) const;
 194
 195   // Sets information about this column
 196   bool SetColumn(int col, wxListItem& item) ;
 197
 198   // Gets the column width
 199   int GetColumnWidth(int col) const;
 200
 201   // Sets the column width
 202   bool SetColumnWidth(int col, int width) ;
 203
 204   // Gets the number of items that can fit vertically in the
 205   // visible area of the list control (list or report view)
 206   // or the total number of items in the list control (icon
 207   // or small icon view)
 208   int GetCountPerPage() const;
 209
 210   // Gets the edit control for editing labels.
 211   wxTextCtrl* GetEditControl() const;
 212
 213   // Gets information about the item
 214   bool GetItem(wxListItem& info) const ;
 215
 216   // Sets information about the item
 217   bool SetItem(wxListItem& info) ;
 218
 219   // Sets a string field at a particular column
 220   long SetItem(long index, int col, const wxString& label, int imageId = -1);
 221
 222   // Gets the item state
 223   int  GetItemState(long item, long stateMask) const ;
 224
 225   // Sets the item state
 226   bool SetItemState(long item, long state, long stateMask) ;
 227
 228   // Sets the item image
 229   bool SetItemImage(long item, int image, int selImage) ;
 230
 231   // Gets the item text
 232   wxString GetItemText(long item) const ;
 233
 234   // Sets the item text
 235   void SetItemText(long item, const wxString& str) ;
 236
 237   // Gets the item data
 238   long GetItemData(long item) const ;
 239
 240   // Sets the item data
 241   bool SetItemData(long item, long data) ;
 242
 243   // Gets the item rectangle
 244   bool GetItemRect(long item, wxRect& rect, int code = wxLIST_RECT_BOUNDS) const ;
 245
 246   // Gets the item position
 247   bool GetItemPosition(long item, wxPoint& pos) const ;
 248
 249   // Sets the item position
 250   bool SetItemPosition(long item, const wxPoint& pos) ;
 251
 252   // Gets the number of items in the list control
 253   int GetItemCount() const;
 254
 255   // Gets the number of columns in the list control
 256   int GetColumnCount() const;
 257
 258   // Retrieves the spacing between icons in pixels.
 259   // If small is TRUE, gets the spacing for the small icon
 260   // view, otherwise the large icon view.
 261   int GetItemSpacing(bool isSmall) const;
 262
 263   // Gets the number of selected items in the list control
 264   int GetSelectedItemCount() const;
 265
 266   // Gets the text colour of the listview
 267   wxColour GetTextColour() const;
 268
 269   // Sets the text colour of the listview
 270   void SetTextColour(const wxColour& col);
 271
 272   // Gets the index of the topmost visible item when in
 273   // list or report view
 274   long GetTopItem() const ;
 275
 276   // Add or remove a single window style
 277   void SetSingleStyle(long style, bool add = TRUE) ;
 278
 279   // Set the whole window style
 280   void SetWindowStyleFlag(long style) ;
 281
 282   // Searches for an item, starting from 'item'.
 283   // item can be -1 to find the first item that matches the
 284   // specified flags.
 285   // Returns the item or -1 if unsuccessful.
 286   long GetNextItem(long item, int geometry = wxLIST_NEXT_ALL, int state = wxLIST_STATE_DONTCARE) const ;
 287
 288   // Implementation: converts wxWindows style to MSW style.
 289   // Can be a single style flag or a bit list.
 290   // oldStyle is 'normalised' so that it doesn't contain
 291   // conflicting styles.
 292   long ConvertToMSWStyle(long& oldStyle, long style) const;
 293
 294   // Gets one of the three image lists
 295   wxImageList *GetImageList(int which) const ;
 296
 297   // Sets the image list
 298   // N.B. There's a quirk in the Win95 list view implementation.
 299   // If in wxLC_LIST mode, it'll *still* display images by the labels if
 300   // there's a small-icon image list set for the control - even though you
 301   // haven't specified wxLIST_MASK_IMAGE when inserting.
 302   // So you have to set a NULL small-icon image list to be sure that
 303   // the wxLC_LIST mode works without icons. Of course, you may want icons...
 304   void SetImageList(wxImageList *imageList, int which) ;
 305
 306   // Operations
 307   ////////////////////////////////////////////////////////////////////////////
 308
 309   // Arranges the items
 310   bool Arrange(int flag = wxLIST_ALIGN_DEFAULT);
 311
 312   // Deletes an item
 313   bool DeleteItem(long item);
 314
 315   // Deletes all items
 316   bool DeleteAllItems() ;
 317
 318   // Deletes a column
 319   bool DeleteColumn(int col);
 320
 321   // Deletes all columns
 322   bool DeleteAllColumns();
 323
 324   // Clears items, and columns if there are any.
 325   void ClearAll();
 326
 327   // Edit the label
 328   wxTextCtrl* EditLabel(long item, wxClassInfo* textControlClass = CLASSINFO(wxTextCtrl));
 329
 330   // End label editing, optionally cancelling the edit
 331   bool EndEditLabel(bool cancel);
 332
 333   // Ensures this item is visible
 334   bool EnsureVisible(long item) ;
 335
 336   // Find an item whose label matches this string, starting from the item after 'start'
 337   // or the beginning if 'start' is -1.
 338   long FindItem(long start, const wxString& str, bool partial = FALSE);
 339
 340   // Find an item whose data matches this data, starting from the item after 'start'
 341   // or the beginning if 'start' is -1.
 342   long FindItem(long start, long data);
 343
 344   // Find an item nearest this position in the specified direction, starting from
 345   // the item after 'start' or the beginning if 'start' is -1.
 346   long FindItem(long start, const wxPoint& pt, int direction);
 347
 348   // Determines which item (if any) is at the specified point,
 349   // giving details in 'flags' (see wxLIST_HITTEST_... flags above)
 350   long HitTest(const wxPoint& point, int& flags);
 351
 352   // Inserts an item, returning the index of the new item if successful,
 353   // -1 otherwise.
 354   // TOD: Should also have some further convenience functions
 355   // which don't require setting a wxListItem object
 356   long InsertItem(wxListItem& info);
 357
 358   // Insert a string item
 359   long InsertItem(long index, const wxString& label);
 360
 361   // Insert an image item
 362   long InsertItem(long index, int imageIndex);
 363
 364   // Insert an image/string item
 365   long InsertItem(long index, const wxString& label, int imageIndex);
 366
 367   // For list view mode (only), inserts a column.
 368   long InsertColumn(long col, wxListItem& info);
 369
 370   long InsertColumn(long col, const wxString& heading, int format = wxLIST_FORMAT_LEFT,
 371     int width = -1);
 372
 373   // Scrolls the list control. If in icon, small icon or report view mode,
 374   // x specifies the number of pixels to scroll. If in list view mode, x
 375   // specifies the number of columns to scroll.
 376   // If in icon, small icon or list view mode, y specifies the number of pixels
 377   // to scroll. If in report view mode, y specifies the number of lines to scroll.
 378   bool ScrollList(int dx, int dy);
 379
 380   // Sort items.
 381
 382   // fn is a function which takes 3 long arguments: item1, item2, data.
 383   // item1 is the long data associated with a first item (NOT the index).
 384   // item2 is the long data associated with a second item (NOT the index).
 385   // data is the same value as passed to SortItems.
 386   // The return value is a negative number if the first item should precede the second
 387   // item, a positive number of the second item should precede the first,
 388   // or zero if the two items are equivalent.
 389
 390   // data is arbitrary data to be passed to the sort function.
 391   bool SortItems(wxListCtrlCompare fn, long data);
 392
 393 /* Why should we need this function? Leave for now.
 394  * We might need it because item data may have changed,
 395  * but the display needs refreshing (in string callback mode)
 396   // Updates an item. If the list control has the wxLI_AUTO_ARRANGE style,
 397   // the items will be rearranged.
 398   bool Update(long item);
 399 */
 400
 401   void Command(wxCommandEvent& event) { ProcessCommand(event); };
 402
 403 protected:
 404   wxTextCtrl*       m_textCtrl;        // The control used for editing a label
 405   wxImageList *     m_imageListNormal; // The image list for normal icons
 406   wxImageList *     m_imageListSmall;  // The image list for small icons
 407   wxImageList *     m_imageListState;  // The image list state icons (not implemented yet)
 408
 409   long              m_baseStyle;  // Basic Windows style flags, for recreation purposes
 410   wxStringList      m_stringPool; // Pool of 3 strings to satisfy Windows callback
 411                                   // requirements
 412   int               m_colCount;   // Windows doesn't have GetColumnCount so must
 413                                   // keep track of inserted/deleted columns
 414
 415 };
 416
 417 class WXDLLEXPORT wxListEvent: public wxCommandEvent
 418 {
 419   DECLARE_DYNAMIC_CLASS(wxListEvent)
 420
 421  public:
 422   wxListEvent(wxEventType commandType = wxEVT_NULL, int id = 0);
 423
 424   int           m_code;
 425   long          m_itemIndex;
 426   long          m_oldItemIndex;
 427   int           m_col;
 428   bool          m_cancelled;
 429   wxPoint       m_pointDrag;
 430
 431   wxListItem    m_item;
 432 };
 433
 434 typedef void (wxEvtHandler::*wxListEventFunction)(wxListEvent&);
 435
 436 #define EVT_LIST_BEGIN_DRAG(id, fn) { wxEVT_COMMAND_LIST_BEGIN_DRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 437 #define EVT_LIST_BEGIN_RDRAG(id, fn) { wxEVT_COMMAND_LIST_BEGIN_RDRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 438 #define EVT_LIST_BEGIN_LABEL_EDIT(id, fn) { wxEVT_COMMAND_LIST_BEGIN_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 439 #define EVT_LIST_END_LABEL_EDIT(id, fn) { wxEVT_COMMAND_LIST_END_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 440 #define EVT_LIST_DELETE_ITEM(id, fn) { wxEVT_COMMAND_LIST_DELETE_ITEM, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 441 #define EVT_LIST_DELETE_ALL_ITEMS(id, fn) { wxEVT_COMMAND_LIST_DELETE_ALL_ITEMS, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 442 #define EVT_LIST_GET_INFO(id, fn) { wxEVT_COMMAND_LIST_GET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 443 #define EVT_LIST_SET_INFO(id, fn) { wxEVT_COMMAND_LIST_SET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 444 #define EVT_LIST_ITEM_SELECTED(id, fn) { wxEVT_COMMAND_LIST_ITEM_SELECTED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 445 #define EVT_LIST_ITEM_DESELECTED(id, fn) { wxEVT_COMMAND_LIST_ITEM_DESELECTED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 446 #define EVT_LIST_KEY_DOWN(id, fn) { wxEVT_COMMAND_LIST_KEY_DOWN, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 447 #define EVT_LIST_INSERT_ITEM(id, fn) { wxEVT_COMMAND_LIST_INSERT_ITEM, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 448 #define EVT_LIST_COL_CLICK(id, fn) { wxEVT_COMMAND_LIST_COL_CLICK, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxListEventFunction) & fn, NULL },
 449
 450 #endif
 451     // _WX_LISTCTRL_H_