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) { return DoSetSelection(n, SetSelection_SendEvent); }
 136     virtual int ChangeSelection(size_t n) { return DoSetSelection(n); }
 137     virtual int HitTest(const wxPoint& pt, long *flags = NULL) const;
 138     virtual void SetImageList(wxImageList *imageList);
 139     virtual void AssignImageList(wxImageList *imageList);
 140     virtual bool DeleteAllPages();
 141
 142 protected:
 143     // Implementation of a page removal. See DeletPage for comments.
 144     wxTreebookPage *DoRemovePage(size_t pos);
 145
 146     // This subclass of wxBookCtrlBase accepts NULL page pointers (empty pages)
 147     virtual bool AllowNullPage() const { return true; }
 148
 149     // event handlers
 150     void OnTreeSelectionChange(wxTreeEvent& event);
 151     void OnTreeNodeExpandedCollapsed(wxTreeEvent& event);
 152
 153     // array of page ids and page windows
 154     wxArrayTreeItemIds m_treeIds;
 155
 156     // the currently selected page or wxNOT_FOUND if none
 157     int m_selection;
 158
 159     // in the situation when m_selection page is not wxNOT_FOUND but page is
 160     // NULL this is the first (sub)child that has a non-NULL page
 161     int m_actualSelection;
 162
 163 private:
 164     // common part of all constructors
 165     void Init();
 166
 167     // The real implementations of page insertion functions
 168     // ------------------------------------------------------
 169     // All DoInsert/Add(Sub)Page functions add the page into :
 170     // - the base class
 171     // - the tree control
 172     // - update the index/TreeItemId corespondance array
 173     bool DoInsertPage(size_t pos,
 174                       wxWindow *page,
 175                       const wxString& text,
 176                       bool bSelect = false,
 177                       int imageId = wxNOT_FOUND);
 178     bool DoInsertSubPage(size_t pos,
 179                          wxWindow *page,
 180                          const wxString& text,
 181                          bool bSelect = false,
 182                          int imageId = wxNOT_FOUND);
 183     bool DoAddSubPage(wxWindow *page,
 184                          const wxString& text,
 185                          bool bSelect = false,
 186                          int imageId = wxNOT_FOUND);
 187
 188     // Sets selection in the tree control and updates the page being shown.
 189     int DoSetSelection(size_t pos, int flags = 0);
 190
 191     // Returns currently shown page. In a case when selected the node
 192     // has empty (NULL) page finds first (sub)child with not-empty page.
 193     wxTreebookPage *DoGetCurrentPage() const;
 194
 195     // Does the selection update. Called from page insertion functions
 196     // to update selection if the selected page was pushed by the newly inserted
 197     void DoUpdateSelection(bool bSelect, int page);
 198
 199
 200     // Operations on the internal private members of the class
 201     // -------------------------------------------------------
 202     // Returns the page TreeItemId for the page.
 203     // Or, if the page index is incorrect, a fake one (fakePage.IsOk() == false)
 204     wxTreeItemId DoInternalGetPage(size_t pos) const;
 205
 206     // Linear search for a page with the id specified. If no page
 207     // found wxNOT_FOUND is returned. The function is used when we catch an event
 208     // from m_tree (wxTreeCtrl) component.
 209     int DoInternalFindPageById(wxTreeItemId page) const;
 210
 211     // Updates page and wxTreeItemId correspondance.
 212     void DoInternalAddPage(size_t newPos, wxWindow *page, wxTreeItemId pageId);
 213
 214     // Removes the page from internal structure.
 215     void DoInternalRemovePage(size_t pos)
 216         { DoInternalRemovePageRange(pos, 0); }
 217
 218     // Removes the page and all its children designated by subCount
 219     // from internal structures of the control.
 220     void DoInternalRemovePageRange(size_t pos, size_t subCount);
 221
 222     // Returns internal number of pages which can be different from
 223     // GetPageCount() while performing a page insertion or removal.
 224     size_t DoInternalGetPageCount() const { return m_treeIds.Count(); }
 225
 226
 227     DECLARE_EVENT_TABLE()
 228     DECLARE_DYNAMIC_CLASS_NO_COPY(wxTreebook)
 229 };
 230
 231
 232 // ----------------------------------------------------------------------------
 233 // treebook event class and related stuff
 234 // ----------------------------------------------------------------------------
 235
 236 class WXDLLEXPORT wxTreebookEvent : public wxBookCtrlBaseEvent
 237 {
 238 public:
 239     wxTreebookEvent(wxEventType commandType = wxEVT_NULL, int id = 0,
 240                     int nSel = wxNOT_FOUND, int nOldSel = wxNOT_FOUND)
 241         : wxBookCtrlBaseEvent(commandType, id, nSel, nOldSel)
 242     {
 243     }
 244
 245     wxTreebookEvent(const wxTreebookEvent& event)
 246         : wxBookCtrlBaseEvent(event)
 247     {
 248     }
 249
 250     virtual wxEvent *Clone() const { return new wxTreebookEvent(*this); }
 251
 252 private:
 253     DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxTreebookEvent)
 254 };
 255
 256 extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_PAGE_CHANGED;
 257 extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_PAGE_CHANGING;
 258 extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_NODE_COLLAPSED;
 259 extern WXDLLIMPEXP_CORE const wxEventType wxEVT_COMMAND_TREEBOOK_NODE_EXPANDED;
 260
 261 typedef void (wxEvtHandler::*wxTreebookEventFunction)(wxTreebookEvent&);
 262
 263 #define wxTreebookEventHandler(func) \
 264     (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxTreebookEventFunction, &func)
 265
 266 #define EVT_TREEBOOK_PAGE_CHANGED(winid, fn) \
 267     wx__DECLARE_EVT1(wxEVT_COMMAND_TREEBOOK_PAGE_CHANGED, winid, wxTreebookEventHandler(fn))
 268
 269 #define EVT_TREEBOOK_PAGE_CHANGING(winid, fn) \
 270     wx__DECLARE_EVT1(wxEVT_COMMAND_TREEBOOK_PAGE_CHANGING, winid, wxTreebookEventHandler(fn))
 271
 272 #define EVT_TREEBOOK_NODE_COLLAPSED(winid, fn) \
 273     wx__DECLARE_EVT1(wxEVT_COMMAND_TREEBOOK_NODE_COLLAPSED, winid, wxTreebookEventHandler(fn))
 274
 275 #define EVT_TREEBOOK_NODE_EXPANDED(winid, fn) \
 276     wx__DECLARE_EVT1(wxEVT_COMMAND_TREEBOOK_NODE_EXPANDED, winid, wxTreebookEventHandler(fn))
 277
 278
 279 #endif // wxUSE_TREEBOOK
 280
 281 #endif // _WX_TREEBOOK_H_