include/wx/generic/treectrl.h

   1 /*
   2  * Author: Robert Roebling
   3  *
   4  * Copyright: (C) 1997,1998 Robert Roebling
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the wxWindows Licence, which
   8  * you have received with this library (see Licence.htm).
   9  *
  10  */
  11
  12 #ifndef __GTKTREECTRLH_G__
  13 #define __GTKTREECTRLH_G__
  14
  15 #ifdef __GNUG__
  16 #pragma interface "treectrl.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20 #include "wx/string.h"
  21 #include "wx/list.h"
  22 #include "wx/control.h"
  23 #include "wx/event.h"
  24 #include "wx/imaglist.h"
  25 #include "wx/scrolwin.h"
  26 #include "wx/dcclient.h"
  27
  28 //-----------------------------------------------------------------------------
  29 // classes
  30 //-----------------------------------------------------------------------------
  31
  32 class wxTreeItem;
  33 class wxTreeEvent;
  34
  35 class wxGenericTreeItem;
  36 class wxTreeCtrl;
  37
  38 class wxImageList;
  39
  40 //-----------------------------------------------------------------------------
  41 // constants
  42 //-----------------------------------------------------------------------------
  43
  44 // WXDLLEXPORT extern const char *wxTreeNameStr;
  45
  46 #define wxTREE_MASK_HANDLE          0x0001
  47 #define wxTREE_MASK_STATE           0x0002
  48 #define wxTREE_MASK_TEXT            0x0004
  49 #define wxTREE_MASK_IMAGE           0x0008
  50 #define wxTREE_MASK_SELECTED_IMAGE  0x0010
  51 #define wxTREE_MASK_CHILDREN        0x0020
  52 #define wxTREE_MASK_DATA            0x0040
  53
  54 #define wxTREE_STATE_BOLD           0x0001
  55 #define wxTREE_STATE_DROPHILITED    0x0002
  56 #define wxTREE_STATE_EXPANDED       0x0004
  57 #define wxTREE_STATE_EXPANDEDONCE   0x0008
  58 #define wxTREE_STATE_FOCUSED        0x0010
  59 #define wxTREE_STATE_SELECTED       0x0020
  60 #define wxTREE_STATE_CUT            0x0040
  61
  62 #define wxTREE_HITTEST_ABOVE            0x0001  // Above the client area.
  63 #define wxTREE_HITTEST_BELOW            0x0002  // Below the client area.
  64 #define wxTREE_HITTEST_NOWHERE          0x0004  // In the client area but below the last item.
  65 #define wxTREE_HITTEST_ONITEMBUTTON     0x0010  // On the button associated with an item.
  66 #define wxTREE_HITTEST_ONITEMICON       0x0020  // On the bitmap associated with an item.
  67 #define wxTREE_HITTEST_ONITEMINDENT     0x0040  // In the indentation associated with an item.
  68 #define wxTREE_HITTEST_ONITEMLABEL      0x0080  // On the label (string) associated with an item.
  69 #define wxTREE_HITTEST_ONITEMRIGHT      0x0100  // In the area to the right of an item.
  70 #define wxTREE_HITTEST_ONITEMSTATEICON  0x0200  // On the state icon for a tree view item that is in a user-defined state.
  71 #define wxTREE_HITTEST_TOLEFT           0x0400  // To the right of the client area.
  72 #define wxTREE_HITTEST_TORIGHT          0x0800  // To the left of the client area.
  73
  74 #define wxTREE_HITTEST_ONITEM (wxTREE_HITTEST_ONITEMICON | wxTREE_HITTEST_ONITEMLABEL | wxTREE_HITTEST_ONITEMSTATEICON)
  75
  76 // Flags for GetNextItem
  77 enum {
  78     wxTREE_NEXT_CARET,                 // Retrieves the currently selected item.
  79     wxTREE_NEXT_CHILD,                 // Retrieves the first child item. The hItem parameter must be NULL.
  80     wxTREE_NEXT_DROPHILITE,            // Retrieves the item that is the target of a drag-and-drop operation.
  81     wxTREE_NEXT_FIRSTVISIBLE,          // Retrieves the first visible item.
  82     wxTREE_NEXT_NEXT,                  // Retrieves the next sibling item.
  83     wxTREE_NEXT_NEXTVISIBLE,           // Retrieves the next visible item that follows the specified item.
  84     wxTREE_NEXT_PARENT,                // Retrieves the parent of the specified item.
  85     wxTREE_NEXT_PREVIOUS,              // Retrieves the previous sibling item.
  86     wxTREE_NEXT_PREVIOUSVISIBLE,       // Retrieves the first visible item that precedes the specified item.
  87     wxTREE_NEXT_ROOT                   // Retrieves the first child item of the root item of which the specified item is a part.
  88 };
  89
  90 // Flags for ExpandItem
  91 enum {
  92     wxTREE_EXPAND_EXPAND,
  93     wxTREE_EXPAND_COLLAPSE,
  94     wxTREE_EXPAND_COLLAPSE_RESET,
  95     wxTREE_EXPAND_TOGGLE
  96 };
  97
  98 // Flags for InsertItem
  99 enum {
 100     wxTREE_INSERT_LAST = -1,
 101     wxTREE_INSERT_FIRST = -2,
 102     wxTREE_INSERT_SORT = -3
 103 };
 104
 105 /* defined in "wx/event.h"
 106  wxEVT_COMMAND_TREE_BEGIN_DRAG,
 107  wxEVT_COMMAND_TREE_BEGIN_RDRAG,
 108  wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT,
 109  wxEVT_COMMAND_TREE_END_LABEL_EDIT,
 110  wxEVT_COMMAND_TREE_DELETE_ITEM,
 111  wxEVT_COMMAND_TREE_GET_INFO,
 112  wxEVT_COMMAND_TREE_SET_INFO,
 113  wxEVT_COMMAND_TREE_ITEM_EXPANDED,
 114  wxEVT_COMMAND_TREE_ITEM_EXPANDING,
 115  wxEVT_COMMAND_TREE_SEL_CHANGED,
 116  wxEVT_COMMAND_TREE_SEL_CHANGING,
 117  wxEVT_COMMAND_TREE_KEY_DOWN
 118 */
 119
 120 //-----------------------------------------------------------------------------
 121 // wxTreeItem
 122 //-----------------------------------------------------------------------------
 123
 124 class WXDLLEXPORT wxTreeItem: public wxObject
 125 {
 126 public:
 127   long            m_mask;
 128   long            m_itemId;
 129   long            m_state;
 130   long            m_stateMask;
 131   wxString        m_text;
 132   int             m_image;
 133   int             m_selectedImage;
 134   int             m_children;
 135   long            m_data;
 136
 137   wxTreeItem();
 138
 139   // Accessors
 140   inline long GetMask() const { return m_mask; }
 141   inline long GetItemId() const { return m_itemId; }
 142   inline long GetState() const { return m_state; }
 143   inline long GetStateMask() const { return m_stateMask; }
 144   inline wxString GetText() const { return m_text; }
 145   inline int GetImage() const { return m_image; }
 146   inline int GetSelectedImage() const { return m_selectedImage; }
 147   inline int GetChildren() const { return m_children; }
 148   inline long GetData() const { return m_data; }
 149
 150   inline void SetMask(long mask) { m_mask = mask; }
 151   inline void SetItemId(long id) { m_itemId = m_itemId = id; }
 152   inline void GetState(long state) { m_state = state; }
 153   inline void SetStateMask(long stateMask) { m_stateMask = stateMask; }
 154   inline void GetText(const wxString& text) { m_text = text; }
 155   inline void SetImage(int image) { m_image = image; }
 156   inline void SetSelectedImage(int selImage) { m_selectedImage = selImage; }
 157   inline void SetChildren(int children) { m_children = children; }
 158   inline void SetData(long data) { m_data = data; }
 159
 160   DECLARE_DYNAMIC_CLASS(wxTreeItem)
 161 };
 162
 163 //-----------------------------------------------------------------------------
 164 // wxTreeEvent
 165 //-----------------------------------------------------------------------------
 166
 167 class WXDLLEXPORT wxTreeEvent: public wxCommandEvent
 168 {
 169   DECLARE_DYNAMIC_CLASS(wxTreeEvent)
 170
 171  public:
 172   wxTreeEvent(wxEventType commandType = wxEVT_NULL, int id = 0);
 173
 174   int           m_code;
 175   wxTreeItem    m_item;
 176   long          m_oldItem;
 177   wxPoint       m_pointDrag;
 178
 179   inline long GetOldItem() const { return m_oldItem; }
 180   inline wxTreeItem& GetItem() const { return (wxTreeItem&) m_item; }
 181   inline wxPoint GetPoint() const { return m_pointDrag; }
 182   inline void SetCode(int code) { m_code = code; }
 183   inline int GetCode() const { return m_code; }
 184 };
 185
 186 typedef void (wxEvtHandler::*wxTreeEventFunction)(wxTreeEvent&);
 187
 188 #define EVT_TREE_BEGIN_DRAG(id, fn) { wxEVT_COMMAND_TREE_BEGIN_DRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 189 #define EVT_TREE_BEGIN_RDRAG(id, fn) { wxEVT_COMMAND_TREE_BEGIN_RDRAG, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 190 #define EVT_TREE_BEGIN_LABEL_EDIT(id, fn) { wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 191 #define EVT_TREE_END_LABEL_EDIT(id, fn) { wxEVT_COMMAND_TREE_END_LABEL_EDIT, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 192 #define EVT_TREE_DELETE_ITEM(id, fn) { wxEVT_COMMAND_TREE_DELETE_ITEM, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 193 #define EVT_TREE_GET_INFO(id, fn) { wxEVT_COMMAND_TREE_GET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 194 #define EVT_TREE_SET_INFO(id, fn) { wxEVT_COMMAND_TREE_SET_INFO, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 195 #define EVT_TREE_ITEM_EXPANDED(id, fn) { wxEVT_COMMAND_TREE_ITEM_EXPANDED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 196 #define EVT_TREE_ITEM_EXPANDING(id, fn) { wxEVT_COMMAND_TREE_ITEM_EXPANDING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 197 #define EVT_TREE_ITEM_COLLAPSED(id, fn) { wxEVT_COMMAND_TREE_ITEM_COLLAPSED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 198 #define EVT_TREE_ITEM_COLLAPSING(id, fn) { wxEVT_COMMAND_TREE_ITEM_COLLAPSING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 199 #define EVT_TREE_SEL_CHANGED(id, fn) { wxEVT_COMMAND_TREE_SEL_CHANGED, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 200 #define EVT_TREE_SEL_CHANGING(id, fn) { wxEVT_COMMAND_TREE_SEL_CHANGING, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 201 #define EVT_TREE_KEY_DOWN(id, fn) { wxEVT_COMMAND_TREE_KEY_DOWN, id, -1, (wxObjectEventFunction) (wxEventFunction) (wxTreeEventFunction) & fn, (wxObject *) NULL },
 202
 203 //-----------------------------------------------------------------------------
 204 // wxGenericTreeItem
 205 //-----------------------------------------------------------------------------
 206
 207 class WXDLLEXPORT wxGenericTreeItem: public wxTreeItem
 208 {
 209   DECLARE_DYNAMIC_CLASS(wxGenericTreeItem)
 210
 211   public:
 212     bool                m_hasChildren,
 213                         m_isCollapsed;
 214
 215     int                 m_x,m_y;
 216     int                 m_height,m_width;
 217     int                 m_xCross,m_yCross;
 218     int                 m_level;
 219     wxList              m_children;
 220     wxGenericTreeItem  *m_parent;
 221     bool                m_hasHilight;
 222
 223     wxGenericTreeItem() {};
 224     wxGenericTreeItem( wxGenericTreeItem *parent );
 225     wxGenericTreeItem( wxGenericTreeItem *parent, const wxTreeItem& item, wxDC *dc );
 226     void SetItem( const wxTreeItem &item, wxDC *dc );
 227     void SetText( const wxString &text, wxDC *dc );
 228     void Reset();
 229     void GetItem( wxTreeItem &item ) const;
 230     void AddChild( const wxTreeItem &item );
 231     bool HasChildren();
 232     bool HasPlus();
 233     int NumberOfVisibleDescendents();
 234     int NumberOfVisibleChildren();
 235     wxGenericTreeItem *FindItem( long itemId ) const;
 236     void AddChild( wxGenericTreeItem *child );
 237     void SetCross( int x, int y );
 238     void GetSize( int &x, int &y );
 239     long HitTest( const wxPoint& point, int &flags );
 240     void PrepareEvent( wxTreeEvent &event );
 241     void SendKeyDown( wxWindow *target );
 242     void SendSelected( wxWindow *target );
 243     void SendDelete( wxWindow *target );
 244     void SendExpand( wxWindow *target );
 245     void SendCollapse( wxWindow *target );
 246     void SetHilight( bool set = TRUE );
 247     bool HasHilight();
 248     bool IsExpanded() const { return !m_isCollapsed; }
 249 };
 250
 251 //-----------------------------------------------------------------------------
 252 // wxTreeCtrl
 253 //-----------------------------------------------------------------------------
 254
 255 class wxTreeCtrl: public wxScrolledWindow
 256 {
 257 public:
 258   wxTreeCtrl();
 259   wxTreeCtrl(wxWindow *parent, const wxWindowID id = -1,
 260       const wxPoint& pos = wxDefaultPosition,
 261       const wxSize& size = wxDefaultSize,
 262       long style = wxTR_HAS_BUTTONS,
 263       const wxString& name = "wxTreeCtrl" );
 264   ~wxTreeCtrl();
 265   bool Create(wxWindow *parent, const wxWindowID id = -1,
 266       const wxPoint& pos = wxDefaultPosition,
 267       const wxSize& size = wxDefaultSize,
 268       long style = wxTR_HAS_BUTTONS,
 269       const wxString& name = "wxTreeCtrl");
 270
 271   int GetCount() const;
 272   long InsertItem( long parent, const wxString& label, int image = -1,
 273                    int selImage = -1, long insertAfter = wxTREE_INSERT_LAST );
 274   long InsertItem( long parent, wxTreeItem &info,
 275                    long insertAfter = wxTREE_INSERT_LAST );
 276   void DeleteItem( long item );
 277   void DeleteChildren( long item );
 278   bool DeleteAllItems();
 279   bool ExpandItem(long item)   { return ExpandItem(item, wxTREE_EXPAND_EXPAND);   }
 280   bool CollapseItem(long item) { return ExpandItem(item, wxTREE_EXPAND_COLLAPSE); }
 281   bool ToggleItem(long item)   { return ExpandItem(item, wxTREE_EXPAND_TOGGLE);   }
 282   bool ExpandItem( long item, int action );
 283
 284     // is the item expanded now?
 285   bool IsItemExpanded(long item)
 286   {
 287     wxGenericTreeItem *pItem = FindItem(item);
 288     return pItem && (pItem->GetState() & wxTREE_STATE_EXPANDED);
 289   }
 290
 291   bool GetItem( wxTreeItem &info ) const;
 292   long GetItemData( long item ) const;
 293   wxString GetItemText( long item ) const;
 294   int  GetItemImage(long item) const;
 295   long GetParent( long item ) const;
 296   long GetRootItem() const;
 297   long GetChild(long item) const;
 298   long GetNextItem(long item, int code) const;
 299   long GetSelection() const;
 300   bool SelectItem( long item );
 301   bool ItemHasChildren( long item ) const;
 302   void SetIndent( int indent );
 303   int GetIndent() const;
 304   bool SetItem( wxTreeItem &info );
 305   bool SetItemData( long item, long data );
 306   bool SetItemText( long item, const wxString &text );
 307   void SetItemImage(long item, int image, int imageSel) const;
 308   long HitTest( const wxPoint& point, int &flags );
 309
 310   int  GetItemState(long item, long stateMask) const;
 311   bool SetItemState(long item, long state, long stateMask);
 312
 313   void AdjustMyScrollbars();
 314   void PaintLevel( wxGenericTreeItem *item, wxPaintDC &dc, int level, int &y );
 315   void OnPaint( const wxPaintEvent &event );
 316   void OnSetFocus( const wxFocusEvent &event );
 317   void OnKillFocus( const wxFocusEvent &event );
 318   void OnChar( wxKeyEvent &event );
 319   void OnMouse( const wxMouseEvent &event );
 320
 321   wxImageList *GetImageList(int which = wxIMAGE_LIST_NORMAL) const;
 322   void SetImageList(wxImageList *imageList, int which = wxIMAGE_LIST_NORMAL);
 323
 324 private:
 325   // set the selection to the specified item generating appropriate event(s)
 326   void SelectItem(wxGenericTreeItem *item);
 327
 328   wxGenericTreeItem   *m_anchor;
 329   wxGenericTreeItem   *m_current;
 330   bool                 m_hasFocus;
 331   int                  m_xScroll,m_yScroll;
 332   int                  m_indent;
 333   long                 m_lastId;
 334   int                  m_lineHeight;
 335   wxPen                m_dottedPen;
 336   bool                 m_isCreated;
 337   wxBrush             *m_hilightBrush;
 338   wxImageList         *m_imageList;
 339   wxImageList         *m_smallImageList;
 340
 341   void CalculateLevel( wxGenericTreeItem *item, wxPaintDC &dc, int level, int &y );
 342   void CalculatePositions();
 343   wxGenericTreeItem *FindItem( long itemId ) const;
 344   void RefreshLine( wxGenericTreeItem *item );
 345
 346   DECLARE_EVENT_TABLE()
 347   DECLARE_DYNAMIC_CLASS(wxTreeCtrl)
 348 };
 349
 350 #endif
 351     // __GTKTREECTRLH_G__