include/wx/treebase.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treebase.h
   3 // Purpose:     wxTreeCtrl base classes and types
   4 // Author:      Julian Smart et al
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1997,1998 Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_TREEBASE_H_
  13 #define _WX_TREEBASE_H_
  14
  15 #ifdef __GNUG__
  16     #pragma interface "treebase.h"
  17 #endif
  18
  19 // ----------------------------------------------------------------------------
  20 // headers
  21 // ----------------------------------------------------------------------------
  22
  23 // Not defined in setup.h so removing for now
  24 // #if wxUSE_TREECTRL
  25
  26 #include "wx/control.h"
  27 #include "wx/event.h"
  28
  29 // ----------------------------------------------------------------------------
  30 // wxTreeItemId identifies an element of the tree. In this implementation, it's
  31 // just a trivial wrapper around Win32 HTREEITEM or a pointer to some private
  32 // data structure in the generic version. It's opaque for the application and
  33 // the only method which can be used by user code is IsOk().
  34 // ----------------------------------------------------------------------------
  35
  36 // Using this typedef removes an ambiguity when calling Remove()
  37 typedef unsigned long wxTreeItemIdValue;
  38
  39 class WXDLLEXPORT wxTreeItemId
  40 {
  41 public:
  42     // ctors
  43         // 0 is invalid value for HTREEITEM
  44     wxTreeItemId() { m_pItem = 0; }
  45
  46         // this one is used in the generic version
  47     wxTreeItemId(void *pItem) { m_pItem = (long) pItem; }
  48
  49         // and this one under MSW
  50     wxTreeItemId(long lItem) { m_pItem = lItem; }
  51
  52         // default copy ctor/assignment operator are ok for us
  53
  54     // accessors
  55         // is this a valid tree item?
  56     bool IsOk() const { return m_pItem != 0; }
  57
  58     // deprecated: only for compatibility
  59     operator wxTreeItemIdValue() const { return m_pItem; }
  60
  61     wxTreeItemIdValue m_pItem;
  62 };
  63
  64 // ----------------------------------------------------------------------------
  65 // wxTreeItemData is some (arbitrary) user class associated with some item. The
  66 // main advantage of having this class (compared to old untyped interface) is
  67 // that wxTreeItemData's are destroyed automatically by the tree and, as this
  68 // class has virtual dtor, it means that the memory will be automatically
  69 // freed. OTOH, we don't just use wxObject instead of wxTreeItemData because
  70 // the size of this class is critical: in any real application, each tree leaf
  71 // will have wxTreeItemData associated with it and number of leaves may be
  72 // quite big.
  73 //
  74 // Because the objects of this class are deleted by the tree, they should
  75 // always be allocated on the heap!
  76 // ----------------------------------------------------------------------------
  77
  78 class WXDLLEXPORT wxTreeItemData: public wxClientData
  79 {
  80 friend class WXDLLEXPORT wxTreeCtrl;
  81 friend class WXDLLEXPORT wxGenericTreeCtrl;
  82 public:
  83     // creation/destruction
  84     // --------------------
  85         // default ctor
  86     wxTreeItemData() { }
  87
  88         // default copy ctor/assignment operator are ok
  89
  90     // accessor: get the item associated with us
  91     const wxTreeItemId& GetId() const { return m_pItem; }
  92     void SetId(const wxTreeItemId& id) { m_pItem = id; }
  93
  94 protected:
  95     wxTreeItemId m_pItem;
  96 };
  97
  98 WX_DEFINE_EXPORTED_ARRAY(wxTreeItemId, wxArrayTreeItemIds);
  99
 100 // ----------------------------------------------------------------------------
 101 // constants
 102 // ----------------------------------------------------------------------------
 103
 104 // enum for different images associated with a treectrl item
 105 enum wxTreeItemIcon
 106 {
 107     wxTreeItemIcon_Normal,              // not selected, not expanded
 108     wxTreeItemIcon_Selected,            //     selected, not expanded
 109     wxTreeItemIcon_Expanded,            // not selected,     expanded
 110     wxTreeItemIcon_SelectedExpanded,    //     selected,     expanded
 111     wxTreeItemIcon_Max
 112 };
 113
 114
 115 // values for the `flags' parameter of wxTreeCtrl::HitTest() which determine
 116 // where exactly the specified point is situated:
 117
 118 static const int wxTREE_HITTEST_ABOVE            = 0x0001;
 119 static const int wxTREE_HITTEST_BELOW            = 0x0002;
 120 static const int wxTREE_HITTEST_NOWHERE          = 0x0004;
 121     // on the button associated with an item.
 122 static const int wxTREE_HITTEST_ONITEMBUTTON     = 0x0008;
 123     // on the bitmap associated with an item.
 124 static const int wxTREE_HITTEST_ONITEMICON       = 0x0010;
 125     // on the indent associated with an item.
 126 static const int wxTREE_HITTEST_ONITEMINDENT     = 0x0020;
 127     // on the label (string) associated with an item.
 128 static const int wxTREE_HITTEST_ONITEMLABEL      = 0x0040;
 129     // on the right of the label associated with an item.
 130 static const int wxTREE_HITTEST_ONITEMRIGHT      = 0x0080;
 131     // on the label (string) associated with an item.
 132 static const int wxTREE_HITTEST_ONITEMSTATEICON  = 0x0100;
 133     // on the left of the wxTreeCtrl.
 134 static const int wxTREE_HITTEST_TOLEFT           = 0x0200;
 135     // on the right of the wxTreeCtrl.
 136 static const int wxTREE_HITTEST_TORIGHT          = 0x0400;
 137     // on the upper part (first half) of the item.
 138 static const int wxTREE_HITTEST_ONITEMUPPERPART  = 0x0800;
 139     // on the lower part (second half) of the item.
 140 static const int wxTREE_HITTEST_ONITEMLOWERPART  = 0x1000;
 141
 142     // anywhere on the item
 143 static const int wxTREE_HITTEST_ONITEM  = wxTREE_HITTEST_ONITEMICON |
 144                                           wxTREE_HITTEST_ONITEMLABEL;
 145
 146 // tree ctrl default name
 147 WXDLLEXPORT_DATA(extern const char*) wxTreeCtrlNameStr;
 148
 149 // ----------------------------------------------------------------------------
 150 // wxTreeItemAttr: a structure containing the visual attributes of an item
 151 // ----------------------------------------------------------------------------
 152
 153 class WXDLLEXPORT wxTreeItemAttr
 154 {
 155 public:
 156     // ctors
 157     wxTreeItemAttr() { }
 158     wxTreeItemAttr(const wxColour& colText,
 159                    const wxColour& colBack,
 160                    const wxFont& font)
 161         : m_colText(colText), m_colBack(colBack), m_font(font) { }
 162
 163     // setters
 164     void SetTextColour(const wxColour& colText) { m_colText = colText; }
 165     void SetBackgroundColour(const wxColour& colBack) { m_colBack = colBack; }
 166     void SetFont(const wxFont& font) { m_font = font; }
 167
 168     // accessors
 169     bool HasTextColour() const { return m_colText.Ok(); }
 170     bool HasBackgroundColour() const { return m_colBack.Ok(); }
 171     bool HasFont() const { return m_font.Ok(); }
 172
 173     const wxColour& GetTextColour() const { return m_colText; }
 174     const wxColour& GetBackgroundColour() const { return m_colBack; }
 175     const wxFont& GetFont() const { return m_font; }
 176
 177 private:
 178     wxColour m_colText,
 179              m_colBack;
 180     wxFont   m_font;
 181 };
 182
 183 // ----------------------------------------------------------------------------
 184 // wxTreeEvent is a special class for all events associated with tree controls
 185 //
 186 // NB: note that not all accessors make sense for all events, see the event
 187 //     descriptions below
 188 // ----------------------------------------------------------------------------
 189
 190 class WXDLLEXPORT wxTreeEvent : public wxNotifyEvent
 191 {
 192     friend class WXDLLEXPORT wxTreeCtrl;
 193     friend class WXDLLEXPORT wxGenericTreeCtrl;
 194
 195 public:
 196     wxTreeEvent(wxEventType commandType = wxEVT_NULL, int id = 0);
 197
 198     // accessors
 199         // get the item on which the operation was performed or the newly
 200         // selected item for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events
 201     wxTreeItemId GetItem() const { return m_item; }
 202
 203         // for wxEVT_COMMAND_TREE_SEL_CHANGED/ING events, get the previously
 204         // selected item
 205     wxTreeItemId GetOldItem() const { return m_itemOld; }
 206
 207         // the point where the mouse was when the drag operation started (for
 208         // wxEVT_COMMAND_TREE_BEGIN_(R)DRAG events only) or click position
 209     wxPoint GetPoint() const { return m_pointDrag; }
 210
 211         // keyboard code (for wxEVT_COMMAND_TREE_KEY_DOWN only)
 212     int GetCode() const { return m_code; }
 213
 214         // label (for EVT_TREE_{BEGIN|END}_LABEL_EDIT only)
 215     const wxString& GetLabel() const { return m_label; }
 216
 217 private:
 218     // we could probably save some space by using union here
 219     int           m_code;
 220     wxTreeItemId  m_item,
 221                   m_itemOld;
 222     wxPoint       m_pointDrag;
 223     wxString      m_label;
 224
 225     DECLARE_DYNAMIC_CLASS(wxTreeEvent)
 226 };
 227
 228 typedef void (wxEvtHandler::*wxTreeEventFunction)(wxTreeEvent&);
 229
 230 // ----------------------------------------------------------------------------
 231 // tree control events and macros for handling them
 232 // ----------------------------------------------------------------------------
 233
 234 BEGIN_DECLARE_EVENT_TYPES()
 235     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_BEGIN_DRAG, 600)
 236     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_BEGIN_RDRAG, 601)
 237     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, 602)
 238     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_END_LABEL_EDIT, 603)
 239     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_DELETE_ITEM, 604)
 240     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_GET_INFO, 605)
 241     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_SET_INFO, 606)
 242     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_EXPANDED, 607)
 243     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_EXPANDING, 608)
 244     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_COLLAPSED, 609)
 245     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_COLLAPSING, 610)
 246     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_SEL_CHANGED, 611)
 247     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_SEL_CHANGING, 612)
 248     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_KEY_DOWN, 613)
 249     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_ACTIVATED, 614)
 250     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK, 615)
 251     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_ITEM_MIDDLE_CLICK, 616)
 252     DECLARE_EVENT_TYPE(wxEVT_COMMAND_TREE_END_DRAG, 617)
 253 END_DECLARE_EVENT_TYPES()
 254
 255 // GetItem() returns the item being dragged, GetPoint() the mouse coords
 256 //
 257 // if you call event.Allow(), the drag operation will start and a
 258 // EVT_TREE_END_DRAG event will be sent when the drag is over.
 259 #define EVT_TREE_BEGIN_DRAG(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_BEGIN_DRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 260 #define EVT_TREE_BEGIN_RDRAG(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_BEGIN_RDRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 261
 262 // GetItem() is the item on which the drop occured (if any) and GetPoint() the
 263 // current mouse coords
 264 #define EVT_TREE_END_DRAG(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_END_DRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 265
 266 // GetItem() returns the itme whose label is being edited, GetLabel() returns
 267 // the current item label for BEGIN and the would be new one for END.
 268 //
 269 // Vetoing BEGIN event means that label editing won't happen at all,
 270 // vetoing END means that the new value is discarded and the old one kept
 271 #define EVT_TREE_BEGIN_LABEL_EDIT(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 272 #define EVT_TREE_END_LABEL_EDIT(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_END_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 273
 274 // provide/update information about GetItem() item
 275 #define EVT_TREE_GET_INFO(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_GET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 276 #define EVT_TREE_SET_INFO(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_SET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 277
 278 // GetItem() is the item being expanded/collapsed, the "ING" versions can use
 279 #define EVT_TREE_ITEM_EXPANDED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_ITEM_EXPANDED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 280 #define EVT_TREE_ITEM_EXPANDING(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_ITEM_EXPANDING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 281 #define EVT_TREE_ITEM_COLLAPSED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_ITEM_COLLAPSED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 282 #define EVT_TREE_ITEM_COLLAPSING(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_ITEM_COLLAPSING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL ),
 283
 284 // GetOldItem() is the item which had the selection previously, GetItem() is
 285 // the item which acquires selection
 286 #define EVT_TREE_SEL_CHANGED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_SEL_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL ),
 287 #define EVT_TREE_SEL_CHANGING(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_SEL_CHANGING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL ),
 288
 289 // GetCode() returns the key code
 290 // NB: this is the only message for which GetItem() is invalid (you may get the
 291 //     item from GetSelection())
 292 #define EVT_TREE_KEY_DOWN(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_KEY_DOWN, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL ),
 293
 294 // GetItem() returns the item being deleted, the associated data (if any) will
 295 // be deleted just after the return of this event handler (if any)
 296 #define EVT_TREE_DELETE_ITEM(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_DELETE_ITEM, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL ),
 297
 298 // GetItem() returns the item that was activated (double click, enter, space)
 299 #define EVT_TREE_ITEM_ACTIVATED(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL ),
 300
 301 // GetItem() returns the item that was clicked on
 302 #define EVT_TREE_ITEM_RIGHT_CLICK(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL ),
 303 #define EVT_TREE_ITEM_MIDDLE_CLICK(id, fn) DECLARE_EVENT_TABLE_ENTRY( wxEVT_COMMAND_TREE_ITEM_MIDDLE_CLICK, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, NULL ),
 304
 305 // #endif // wxUSE_TREECTRL
 306
 307 #endif
 308     // _WX_TREEBASE_H_
 309
 310