97 lines
3 KiB
C
97 lines
3 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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// Name: wx/persist/treebook.h
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// Purpose: persistence support for wxBookCtrl
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// Author: Vadim Zeitlin
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// Created: 2009-01-19
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// Copyright: (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_PERSIST_TREEBOOK_H_
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#define _WX_PERSIST_TREEBOOK_H_
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#include "wx/persist/bookctrl.h"
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#include "wx/arrstr.h"
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#include "wx/treebook.h"
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// ----------------------------------------------------------------------------
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// string constants used by wxPersistentTreeBookCtrl
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// ----------------------------------------------------------------------------
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#define wxPERSIST_TREEBOOK_KIND "TreeBook"
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// this key contains the indices of all expanded nodes in the tree book
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// separated by wxPERSIST_TREEBOOK_EXPANDED_SEP
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#define wxPERSIST_TREEBOOK_EXPANDED_BRANCHES "Expanded"
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#define wxPERSIST_TREEBOOK_EXPANDED_SEP ','
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// ----------------------------------------------------------------------------
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// wxPersistentTreeBookCtrl: supports saving/restoring open tree branches
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// ----------------------------------------------------------------------------
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class wxPersistentTreeBookCtrl : public wxPersistentBookCtrl
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{
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public:
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wxPersistentTreeBookCtrl(wxTreebook *book)
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: wxPersistentBookCtrl(book)
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{
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}
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virtual void Save() const
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{
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const wxTreebook * const book = GetTreeBook();
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wxString expanded;
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const size_t count = book->GetPageCount();
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for ( size_t n = 0; n < count; n++ )
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{
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if ( book->IsNodeExpanded(n) )
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{
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if ( !expanded.empty() )
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expanded += wxPERSIST_TREEBOOK_EXPANDED_SEP;
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expanded += wxString::Format("%u", static_cast<unsigned>(n));
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}
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}
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SaveValue(wxPERSIST_TREEBOOK_EXPANDED_BRANCHES, expanded);
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wxPersistentBookCtrl::Save();
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}
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virtual bool Restore()
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{
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wxTreebook * const book = GetTreeBook();
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wxString expanded;
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if ( RestoreValue(wxPERSIST_TREEBOOK_EXPANDED_BRANCHES, &expanded) )
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{
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const wxArrayString
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indices(wxSplit(expanded, wxPERSIST_TREEBOOK_EXPANDED_SEP));
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const size_t pageCount = book->GetPageCount();
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const size_t count = indices.size();
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for ( size_t n = 0; n < count; n++ )
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{
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unsigned long idx;
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if ( indices[n].ToULong(&idx) && idx < pageCount )
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book->ExpandNode(idx);
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}
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}
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return wxPersistentBookCtrl::Restore();
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}
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virtual wxString GetKind() const { return wxPERSIST_TREEBOOK_KIND; }
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wxTreebook *GetTreeBook() const { return static_cast<wxTreebook *>(Get()); }
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};
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inline wxPersistentObject *wxCreatePersistentObject(wxTreebook *book)
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{
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return new wxPersistentTreeBookCtrl(book);
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}
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#endif // _WX_PERSIST_TREEBOOK_H_
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