/////////////////////////////////////////////////////////////////////////////// // Name: wx/htmllbox.h // Purpose: wxHtmlListBox is a listbox whose items are wxHtmlCells // Author: Vadim Zeitlin // Modified by: // Created: 31.05.03 // RCS-ID: $Id$ // Copyright: (c) 2003 Vadim Zeitlin // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// #ifndef _WX_HTMLLBOX_H_ #define _WX_HTMLLBOX_H_ #include "wx/vlbox.h" // base class #include "wx/html/htmlwin.h" #if wxUSE_FILESYSTEM #include "wx/filesys.h" #endif // wxUSE_FILESYSTEM class WXDLLIMPEXP_HTML wxHtmlCell; class WXDLLIMPEXP_HTML wxHtmlWinParser; class WXDLLIMPEXP_HTML wxHtmlListBoxCache; class WXDLLIMPEXP_HTML wxHtmlListBoxStyle; // ---------------------------------------------------------------------------- // wxHtmlListBox // ---------------------------------------------------------------------------- class WXDLLIMPEXP_HTML wxHtmlListBox : public wxVListBox, public wxHtmlWindowInterface, private wxHtmlWindowMouseHelper { DECLARE_ABSTRACT_CLASS(wxHtmlListBox) public: // constructors and such // --------------------- // default constructor, you must call Create() later wxHtmlListBox(); // normal constructor which calls Create() internally wxHtmlListBox(wxWindow *parent, wxWindowID id = wxID_ANY, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = 0, const wxString& name = wxVListBoxNameStr); // really creates the control and sets the initial number of items in it // (which may be changed later with SetItemCount()) // // the only special style which may be specified here is wxLB_MULTIPLE // // returns true on success or false if the control couldn't be created bool Create(wxWindow *parent, wxWindowID id = wxID_ANY, const wxPoint& pos = wxDefaultPosition, const wxSize& size = wxDefaultSize, long style = 0, const wxString& name = wxVListBoxNameStr); // destructor cleans up whatever resources we use virtual ~wxHtmlListBox(); // override some base class virtuals virtual void RefreshLine(size_t line); virtual void RefreshLines(size_t from, size_t to); virtual void RefreshAll(); virtual void SetItemCount(size_t count); #if wxUSE_FILESYSTEM // retrieve the file system used by the wxHtmlWinParser: if you use // relative paths in your HTML, you should use its ChangePathTo() method wxFileSystem& GetFileSystem() { return m_filesystem; } const wxFileSystem& GetFileSystem() const { return m_filesystem; } #endif // wxUSE_FILESYSTEM virtual void OnInternalIdle(); protected: // this method must be implemented in the derived class and should return // the body (i.e. without ) of the HTML for the given item virtual wxString OnGetItem(size_t n) const = 0; // this function may be overridden to decorate HTML returned by OnGetItem() virtual wxString OnGetItemMarkup(size_t n) const; // this method allows to customize the selection appearance: it may be used // to specify the colour of the text which normally has the given colour // colFg when it is inside the selection // // by default, the original colour is not used at all and all text has the // same (default for this system) colour inside selection virtual wxColour GetSelectedTextColour(const wxColour& colFg) const; // this is the same as GetSelectedTextColour() but allows to customize the // background colour -- this is even more rarely used as you can change it // globally using SetSelectionBackground() virtual wxColour GetSelectedTextBgColour(const wxColour& colBg) const; // we implement both of these functions in terms of OnGetItem(), they are // not supposed to be overridden by our descendants virtual void OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const; virtual wxCoord OnMeasureItem(size_t n) const; // This method may be overriden to handle clicking on a link in // the listbox. By default, clicking links is ignored. virtual void OnLinkClicked(size_t WXUNUSED(n), const wxHtmlLinkInfo& WXUNUSED(link)) {} // event handlers void OnSize(wxSizeEvent& event); void OnMouseMove(wxMouseEvent& event); void OnLeftDown(wxMouseEvent& event); // common part of all ctors void Init(); // ensure that the given item is cached void CacheItem(size_t n) const; private: // wxHtmlWindowInterface methods: virtual void SetHTMLWindowTitle(const wxString& title); virtual void OnHTMLLinkClicked(const wxHtmlLinkInfo& link); virtual wxHtmlOpeningStatus OnHTMLOpeningURL(wxHtmlURLType type, const wxString& url, wxString *redirect) const; virtual wxPoint HTMLCoordsToWindow(wxHtmlCell *cell, const wxPoint& pos) const; virtual wxWindow* GetHTMLWindow(); virtual wxColour GetHTMLBackgroundColour() const; virtual void SetHTMLBackgroundColour(const wxColour& clr); virtual void SetHTMLBackgroundImage(const wxBitmap& bmpBg); virtual void SetHTMLStatusText(const wxString& text); // returns index of item that contains given HTML cell size_t GetItemForCell(const wxHtmlCell *cell) const; // return physical coordinates of root wxHtmlCell of n-th item wxPoint GetRootCellCoords(size_t n) const; // Converts physical coordinates stored in @a pos into coordinates // relative to the root cell of the item under mouse cursor, if any. If no // cell is found under the cursor, returns false. Otherwise stores the new // coordinates back into @a pos and pointer to the cell under cursor into // @a cell and returns true. bool PhysicalCoordsToCell(wxPoint& pos, wxHtmlCell*& cell) const; // The opposite of PhysicalCoordsToCell: converts coordinates relative to // given cell to physical coordinates in the window wxPoint CellCoordsToPhysical(const wxPoint& pos, wxHtmlCell *cell) const; private: // this class caches the pre-parsed HTML to speed up display wxHtmlListBoxCache *m_cache; // HTML parser we use wxHtmlWinParser *m_htmlParser; #if wxUSE_FILESYSTEM // file system used by m_htmlParser wxFileSystem m_filesystem; #endif // wxUSE_FILESYSTEM // rendering style for the parser which allows us to customize our colours wxHtmlListBoxStyle *m_htmlRendStyle; // it calls our GetSelectedTextColour() and GetSelectedTextBgColour() friend class wxHtmlListBoxStyle; friend class wxHtmlListBoxWinInterface; DECLARE_EVENT_TABLE() DECLARE_NO_COPY_CLASS(wxHtmlListBox) }; #endif // _WX_HTMLLBOX_H_