include/wx/treebook.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/treebook.h
   3 // Purpose:     wxTreebook: wxNotebook-like control presenting pages in a tree
   4 // Author:      Evgeniy Tarassov, Vadim Zeitlin
   5 // Modified by:
   6 // Created:     2005-09-15
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2005 Vadim Zeitlin <vadim@wxwidgets.org>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_TREEBOOK_H_
  13 #define _WX_TREEBOOK_H_
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_TREEBOOK
  18
  19 #include "wx/bookctrl.h"
  20 #include "wx/treectrl.h"        // for wxArrayTreeItemIds
  21
  22 typedef wxWindow wxTreebookPage;
  23
  24 class WXDLLEXPORT wxTreeEvent;
  25
  26 // ----------------------------------------------------------------------------
  27 // wxTreebook
  28 // ----------------------------------------------------------------------------
  29
  30 class WXDLLEXPORT wxTreebook : public wxBookCtrlBase
  31 {
  32 public:
  33     // Constructors and such
  34     // ---------------------
  35
  36     // Default ctor doesn't create the control, use Create() afterwards
  37     wxTreebook()
  38     {
  39         Init();
  40     }
  41
  42     // This ctor creates the tree book control
  43     wxTreebook(wxWindow *parent,
  44                wxWindowID id,
  45                const wxPoint& pos = wxDefaultPosition,
  46                const wxSize& size = wxDefaultSize,
  47                long style = wxBK_DEFAULT,
  48                const wxString& name = wxEmptyString)
  49     {
  50         Init();
  51
  52         (void)Create(parent, id, pos, size, style, name);
  53     }
  54
  55     // Really creates the control
  56     bool Create(wxWindow *parent,
  57                 wxWindowID id,
  58                 const wxPoint& pos = wxDefaultPosition,
  59                 const wxSize& size = wxDefaultSize,
  60                 long style = wxBK_DEFAULT,
  61                 const wxString& name = wxEmptyString);
  62
  63
  64     // Page insertion operations
  65     // -------------------------
  66
  67     // Notice that page pointer may be NULL in which case the next non NULL
  68     // page (usually the first child page of a node) is shown when this page is
  69     // selected
  70
  71     // Inserts a new page just before the page indicated by page.
  72     // The new page is placed on the same level as page.
  73     virtual bool InsertPage(size_t pos,
  74                             wxWindow *page,
  75                             const wxString& text,
  76                             bool bSelect = false,
  77                             int imageId = wxNOT_FOUND);
  78
  79     // Inserts a new sub-page to the end of children of the page at given pos.
  80     virtual bool InsertSubPage(size_t pos,
  81                                wxWindow *page,
  82                                const wxString& text,
  83                                bool bSelect = false,
  84                                int imageId = wxNOT_FOUND);
  85
  86     // Adds a new page at top level after all other pages.
  87     virtual bool AddPage(wxWindow *page,
  88                          const wxString& text,
  89                          bool bSelect = false,
  90                          int imageId = wxNOT_FOUND);
  91
  92     // Adds a new child-page to the last top-level page inserted.
  93     // Useful when constructing 1 level tree structure.
  94     virtual bool AddSubPage(wxWindow *page,
  95                             const wxString& text,
  96                             bool bSelect = false,
  97                             int imageId = wxNOT_FOUND);
  98
  99     // Deletes the page and ALL its children. Could trigger page selection
 100     // change in a case when selected page is removed. In that case its parent
 101     // is selected (or the next page if no parent).
 102     virtual bool DeletePage(size_t pos);
 103
 104
 105     // Tree operations
 106     // ---------------
 107
 108     // Gets the page node state -- node is expanded or collapsed
 109     virtual bool IsNodeExpanded(size_t pos) const;
 110
 111     // Expands or collapses the page node. Returns the previous state.
 112     // May generate page changing events (if selected page
 113     // is under the collapsed branch, then parent is autoselected).
 114     virtual bool ExpandNode(size_t pos, bool expand = true);
 115
 116     // shortcut for ExpandNode(pos, false)
 117     bool CollapseNode(size_t pos) { return ExpandNode(pos, false); }
 118
 119     // get the parent page or wxNOT_FOUND if this is a top level page
 120     int GetPageParent(size_t pos) const;
 121
 122     // the tree control we use for showing the pages index tree
 123     wxTreeCtrl* GetTreeCtrl() const { return (wxTreeCtrl*)m_bookctrl; }
 124
 125
 126     // Standard operations inherited from wxBookCtrlBase
 127     // -------------------------------------------------
 128
 129     virtual int GetSelection() const;
 130     virtual bool SetPageText(size_t n, const wxString& strText);
 131     virtual wxString GetPageText(size_t n) const;
 132     virtual int GetPageImage(size_t n) const;
 133     virtual bool SetPageImage(size_t n, int imageId);
 134     virtual wxSize CalcSizeFromPage(const wxSize& sizePage) const;
 135     virtual int SetSelection(size_t n);
 136     virtual void SetImageList(wxImageList *imageList);
 137     virtual void AssignImageList(wxImageList *imageList);
 138     virtual bool DeleteAllPages();
 139
 140 protected:
 141     // This subclass of wxBookCtrlBase accepts NULL page pointers (empty pages)
 142     virtual bool AllowNullPage() const { return true; }
 143
 144     // event handlers
 145     void OnTreeSelectionChange(wxTreeEvent& event);
 146     void OnTreeNodeExpandedCollapsed(wxTreeEvent& event);
 147
 148     // array of page ids and page windows
 149     wxArrayTreeItemIds m_treeIds;
 150
 151     // the currently selected page or wxNOT_FOUND if none
 152     int m_selection;
 153
 154     // in the situation when m_selection page is not wxNOT_FOUND but page is
 155     // NULL this is the first (sub)child that has a non-NULL page
 156     int m_actualSelection;
 157
 158 private:
 159     // common part of all constructors
 160     void Init();
 161
 162     // The real implementations of page insertion functions
 163     // ------------------------------------------------------
 164     // All DoInsert/Add(Sub)Page functions add the page into :
 165     // - the base class
 166     // - the tree control
 167     // - update the index/TreeItemId corespondance array
 168     bool DoInsertPage(size_t pos,
 169                       wxWindow *page,
 170                       const wxString& text,
 171                       bool bSelect = false,
 172                       int imageId = wxNOT_FOUND);
 173     bool DoInsertSubPage(size_t pos,
 174                          wxWindow *page,
 175                          const wxString& text,
 176                          bool bSelect = false,
 177                          int imageId = wxNOT_FOUND);
 178     bool DoAddSubPage(wxWindow *page,
 179                          const wxString& text,
 180                          bool bSelect = false,
 181                          int imageId = wxNOT_FOUND);
 182
 183     // Implementation of a page removal. See DeletPage for comments.
 184     wxTreebookPage *DoRemovePage(size_t pos);
 185
 186     // Sets selection in the tree control and updates the page being shown.
 187     int DoSetSelection(size_t pos);
 188
 189     // Returns currently shown page. In a case when selected the node
 190     // has empty (NULL) page finds first (sub)child with not-empty page.
 191     wxTreebookPage *DoGetCurrentPage() const;
 192
 193     // Does the selection update. Called from page insertion functions
 194     // to update selection if the selected page was pushed by the newly inserted
 195     void DoUpdateSelection(bool bSelect, int page);
 196
 197
 198     // Operations on the internal private members of the class
 199     // -------------------------------------------------------
 200     // Returns the page TreeItemId for the page.
 201     // Or, if the page index is incorrect, a fake one (fakePage.IsOk() == false)
 202     wxTreeItemId DoInternalGetPage(size_t pos) const;
 203
 204     // Linear search for a page with the id specified. If no page
 205     // found wxNOT_FOUND is returned. The function is used when we catch an event
 206     // from m_tree (wxTreeCtrl) component.
 207     int DoInternalFindPageById(wxTreeItemId page) const;
 208
 209     // Updates page and wxTreeItemId correspondance.
 210     void DoInternalAddPage(size_t newPos, wxWindow *page, wxTreeItemId pageId);
 211
 212     // Removes the page from internal structure.
 213     void DoInternalRemovePage(size_t pos)
 214         { DoInternalRemovePageRange(pos, 0); }
 215
 216     // Removes the page and all its children designated by subCount
 217     // from internal structures of the control.
 218     void DoInternalRemovePageRange(size_t pos, size_t subCount);
 219
 220     // Returns internal number of pages which can be different from
 221     // GetPageCount() while performing a page insertion or removal.
 222     size_t DoInternalGetPageCount() const { return m_treeIds.Count(); }
 223
 224
 225     DECLARE_EVENT_TABLE()
 226     DECLARE_DYNAMIC_CLASS_NO_COPY(wxTreebook)
 227 };
 228
 229
 230 // ----------------------------------------------------------------------------
 231 // treebook event class and related stuff
 232 // ----------------------------------------------------------------------------
 233
 234 class WXDLLEXPORT wxTreebookEvent : public wxBookCtrlBaseEvent
 235 {
 236 public:
 237     wxTreebookEvent(wxEventType commandType = wxEVT_NULL, int id = 0,
 238                     int nSel = wxNOT_FOUND, int nOldSel = wxNOT_FOUND)
 239         : wxBookCtrlBaseEvent(commandType, id, nSel, nOldSel)
 240     {
 241     }
 242
 243     wxTreebookEvent(const wxTreebookEvent& event)
 244         : wxBookCtrlBaseEvent(event)
 245     {
 246     }
 247
 248     virtual wxEvent *Clone() const { return new wxTreebookEvent(*this); }
 249
 250 private:
 251     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxTreebookEvent)
 252 };
 253
 254 extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_PAGE_CHANGED;
 255 extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_PAGE_CHANGING;
 256 extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_NODE_COLLAPSED;
 257 extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_NODE_EXPANDED;
 258
 259 typedef void (wxEvtHandler::*wxTreebookEventFunction)(wxTreebookEvent&);
 260
 261 #define wxTreebookEventHandler(func) \
 262     (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxTreebookEventFunction, &func)
 263
 264 #define EVT_TREEBOOK_PAGE_CHANGED(winid, fn) \
 265     wx__DECLARE_EVT1(wxEVT_COMMAND_TREEBOOK_PAGE_CHANGED, winid, wxTreebookEventHandler(fn))
 266
 267 #define EVT_TREEBOOK_PAGE_CHANGING(winid, fn) \
 268     wx__DECLARE_EVT1(wxEVT_COMMAND_TREEBOOK_PAGE_CHANGING, winid, wxTreebookEventHandler(fn))
 269
 270 #define EVT_TREEBOOK_NODE_COLLAPSED(winid, fn) \
 271     wx__DECLARE_EVT1(wxEVT_COMMAND_TREEBOOK_NODE_COLLAPSED, winid, wxTreebookEventHandler(fn))
 272
 273 #define EVT_TREEBOOK_NODE_EXPANDED(winid, fn) \
 274     wx__DECLARE_EVT1(wxEVT_COMMAND_TREEBOOK_NODE_EXPANDED, winid, wxTreebookEventHandler(fn))
 275
 276
 277 #endif // wxUSE_TREEBOOK
 278
 279 #endif // _WX_TREEBOOK_H_