| | 1 | /////////////////////////////////////////////////////////////////////////////// |
| | 2 | // Name: wx/htmllbox.h |
| | 3 | // Purpose: wxHtmlListBox is a listbox whose items are wxHtmlCells |
| | 4 | // Author: Vadim Zeitlin |
| | 5 | // Modified by: |
| | 6 | // Created: 31.05.03 |
| | 7 | // RCS-ID: $Id$ |
| | 8 | // Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org> |
| | 9 | // Licence: wxWindows licence |
| | 10 | /////////////////////////////////////////////////////////////////////////////// |
| | 11 | |
| | 12 | #ifndef _WX_HTMLLBOX_H_ |
| | 13 | #define _WX_HTMLLBOX_H_ |
| | 14 | |
| | 15 | #include "wx/vlbox.h" // base class |
| | 16 | |
| | 17 | #if wxUSE_FILESYSTEM |
| | 18 | #include "wx/filesys.h" |
| | 19 | #endif // wxUSE_FILESYSTEM |
| | 20 | |
| | 21 | class WXDLLIMPEXP_HTML wxHtmlCell; |
| | 22 | class WXDLLIMPEXP_HTML wxHtmlWinParser; |
| | 23 | class WXDLLIMPEXP_HTML wxHtmlListBoxCache; |
| | 24 | class WXDLLIMPEXP_HTML wxHtmlListBoxStyle; |
| | 25 | |
| | 26 | // ---------------------------------------------------------------------------- |
| | 27 | // wxHtmlListBox |
| | 28 | // ---------------------------------------------------------------------------- |
| | 29 | |
| | 30 | class WXDLLIMPEXP_HTML wxHtmlListBox : public wxVListBox |
| | 31 | { |
| | 32 | DECLARE_ABSTRACT_CLASS(wxHtmlListBox) |
| | 33 | public: |
| | 34 | // constructors and such |
| | 35 | // --------------------- |
| | 36 | |
| | 37 | // default constructor, you must call Create() later |
| | 38 | wxHtmlListBox() { Init(); } |
| | 39 | |
| | 40 | // normal constructor which calls Create() internally |
| | 41 | wxHtmlListBox(wxWindow *parent, |
| | 42 | wxWindowID id = wxID_ANY, |
| | 43 | const wxPoint& pos = wxDefaultPosition, |
| | 44 | const wxSize& size = wxDefaultSize, |
| | 45 | long style = 0, |
| | 46 | const wxString& name = wxVListBoxNameStr) |
| | 47 | { |
| | 48 | Init(); |
| | 49 | |
| | 50 | (void)Create(parent, id, pos, size, style, name); |
| | 51 | } |
| | 52 | |
| | 53 | // really creates the control and sets the initial number of items in it |
| | 54 | // (which may be changed later with SetItemCount()) |
| | 55 | // |
| | 56 | // the only special style which may be specified here is wxLB_MULTIPLE |
| | 57 | // |
| | 58 | // returns true on success or false if the control couldn't be created |
| | 59 | bool Create(wxWindow *parent, |
| | 60 | wxWindowID id = wxID_ANY, |
| | 61 | const wxPoint& pos = wxDefaultPosition, |
| | 62 | const wxSize& size = wxDefaultSize, |
| | 63 | long style = 0, |
| | 64 | const wxString& name = wxVListBoxNameStr); |
| | 65 | |
| | 66 | // destructor cleans up whatever resources we use |
| | 67 | virtual ~wxHtmlListBox(); |
| | 68 | |
| | 69 | // override some base class virtuals |
| | 70 | virtual void RefreshAll(); |
| | 71 | virtual void SetItemCount(size_t count); |
| | 72 | |
| | 73 | |
| | 74 | #if wxUSE_FILESYSTEM |
| | 75 | // retrieve the file system used by the wxHtmlWinParser: if you use |
| | 76 | // relative paths in your HTML, you should use its ChangePathTo() method |
| | 77 | wxFileSystem& GetFileSystem() { return m_filesystem; } |
| | 78 | const wxFileSystem& GetFileSystem() const { return m_filesystem; } |
| | 79 | #endif // wxUSE_FILESYSTEM |
| | 80 | |
| | 81 | protected: |
| | 82 | // this method must be implemented in the derived class and should return |
| | 83 | // the body (i.e. without <html>) of the HTML for the given item |
| | 84 | virtual wxString OnGetItem(size_t n) const = 0; |
| | 85 | |
| | 86 | // this function may be overridden to decorate HTML returned by OnGetItem() |
| | 87 | virtual wxString OnGetItemMarkup(size_t n) const; |
| | 88 | |
| | 89 | |
| | 90 | // this method allows to customize the selection appearance: it may be used |
| | 91 | // to specify the colour of the text which normally has the given colour |
| | 92 | // colFg when it is inside the selection |
| | 93 | // |
| | 94 | // by default, the original colour is not used at all and all text has the |
| | 95 | // same (default for this system) colour inside selection |
| | 96 | virtual wxColour GetSelectedTextColour(const wxColour& colFg) const; |
| | 97 | |
| | 98 | // this is the same as GetSelectedTextColour() but allows to customize the |
| | 99 | // background colour -- this is even more rarely used as you can change it |
| | 100 | // globally using SetSelectionBackground() |
| | 101 | virtual wxColour GetSelectedTextBgColour(const wxColour& colBg) const; |
| | 102 | |
| | 103 | |
| | 104 | // we implement both of these functions in terms of OnGetItem(), they are |
| | 105 | // not supposed to be overridden by our descendants |
| | 106 | virtual void OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const; |
| | 107 | virtual wxCoord OnMeasureItem(size_t n) const; |
| | 108 | |
| | 109 | |
| | 110 | // event handlers |
| | 111 | void OnSize(wxSizeEvent& event); |
| | 112 | |
| | 113 | |
| | 114 | // common part of all ctors |
| | 115 | void Init(); |
| | 116 | |
| | 117 | // ensure that the given item is cached |
| | 118 | void CacheItem(size_t n) const; |
| | 119 | |
| | 120 | private: |
| | 121 | // this class caches the pre-parsed HTML to speed up display |
| | 122 | wxHtmlListBoxCache *m_cache; |
| | 123 | |
| | 124 | // HTML parser we use |
| | 125 | wxHtmlWinParser *m_htmlParser; |
| | 126 | |
| | 127 | #if wxUSE_FILESYSTEM |
| | 128 | // file system used by m_htmlParser |
| | 129 | wxFileSystem m_filesystem; |
| | 130 | #endif // wxUSE_FILESYSTEM |
| | 131 | |
| | 132 | // rendering style for the parser which allows us to customize our colours |
| | 133 | wxHtmlListBoxStyle *m_htmlRendStyle; |
| | 134 | |
| | 135 | |
| | 136 | // it calls our GetSelectedTextColour() and GetSelectedTextBgColour() |
| | 137 | friend class wxHtmlListBoxStyle; |
| | 138 | |
| | 139 | |
| | 140 | DECLARE_EVENT_TABLE() |
| | 141 | DECLARE_NO_COPY_CLASS(wxHtmlListBox) |
| | 142 | }; |
| | 143 | |
| | 144 | #endif // _WX_HTMLLBOX_H_ |
| | 145 | |
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