[wxWidgets.git] / include / wx / htmllbox.h

///////////////////////////////////////////////////////////////////////////////
// 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 <vadim@wxwindows.org>
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#ifndef _WX_HTMLLBOX_H_
#define _WX_HTMLLBOX_H_

#include "wx/vlbox.h"               // base class

class WXDLLIMPEXP_HTML wxHtmlCell;
class WXDLLIMPEXP_HTML wxHtmlWinParser;
class WXDLLIMPEXP_HTML wxHtmlListBoxCache;
class WXDLLIMPEXP_HTML wxHtmlListBoxStyle;

// ----------------------------------------------------------------------------
// wxHtmlListBox
// ----------------------------------------------------------------------------

class WXDLLIMPEXP_HTML wxHtmlListBox : public wxVListBox
{
public:
    // constructors and such
    // ---------------------

    // default constructor, you must call Create() later
    wxHtmlListBox() { Init(); }

    // 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)
    {
        Init();

        (void)Create(parent, id, pos, size, style, name);
    }

    // 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 RefreshAll();
    virtual void SetItemCount(size_t count);

protected:
    // this method must be implemented in the derived class and should return
    // the body (i.e. without <html>) 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;


    // event handlers
    void OnSize(wxSizeEvent& event);


    // common part of all ctors
    void Init();

    // ensure that the given item is cached
    void CacheItem(size_t n) const;

private:
    // this class caches the pre-parsed HTML to speed up display
    wxHtmlListBoxCache *m_cache;

    // HTML parser we use
    wxHtmlWinParser *m_htmlParser;

    // rendering style for the parser which allows us to customize our colours
    wxHtmlListBoxStyle *m_htmlRendStyle;


    // it calls our GetSelectedTextColour() and GetSelectedTextBgColour()
    friend class wxHtmlListBoxStyle;


    DECLARE_EVENT_TABLE()
    DECLARE_NO_COPY_CLASS(wxHtmlListBox)
};

#endif // _WX_HTMLLBOX_H_
Commit	Line	Data
e0c6027b VZ	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@wxwindows.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
6acba9a7 VS	17	class WXDLLIMPEXP_HTML wxHtmlCell;
	18	class WXDLLIMPEXP_HTML wxHtmlWinParser;
	19	class WXDLLIMPEXP_HTML wxHtmlListBoxCache;
	20	class WXDLLIMPEXP_HTML wxHtmlListBoxStyle;
e0c6027b VZ	21
	22	// ----------------------------------------------------------------------------
	23	// wxHtmlListBox
	24	// ----------------------------------------------------------------------------
	25
6acba9a7	26	class WXDLLIMPEXP_HTML wxHtmlListBox : public wxVListBox
e0c6027b VZ	27	{
	28	public:
	29	// constructors and such
	30	// ---------------------
	31
	32	// default constructor, you must call Create() later
	33	wxHtmlListBox() { Init(); }
	34
	35	// normal constructor which calls Create() internally
	36	wxHtmlListBox(wxWindow *parent,
	37	wxWindowID id = wxID_ANY,
	38	const wxPoint& pos = wxDefaultPosition,
	39	const wxSize& size = wxDefaultSize,
e0c6027b VZ	40	long style = 0,
	41	const wxString& name = wxVListBoxNameStr)
	42	{
	43	Init();
	44
43e319a3	45	(void)Create(parent, id, pos, size, style, name);
e0c6027b VZ	46	}
	47
	48	// really creates the control and sets the initial number of items in it
	49	// (which may be changed later with SetItemCount())
	50	//
43e319a3	51	// the only special style which may be specified here is wxLB_MULTIPLE
e0c6027b VZ	52	//
	53	// returns true on success or false if the control couldn't be created
	54	bool Create(wxWindow *parent,
	55	wxWindowID id = wxID_ANY,
	56	const wxPoint& pos = wxDefaultPosition,
	57	const wxSize& size = wxDefaultSize,
e0c6027b VZ	58	long style = 0,
	59	const wxString& name = wxVListBoxNameStr);
	60
	61	// destructor cleans up whatever resources we use
	62	virtual ~wxHtmlListBox();
	63
03495767	64	// override some base class virtuals
5ecdc7ab	65	virtual void RefreshAll();
03495767	66	virtual void SetItemCount(size_t count);
5ecdc7ab	67
e0c6027b VZ	68	protected:
	69	// this method must be implemented in the derived class and should return
	70	// the body (i.e. without <html>) of the HTML for the given item
	71	virtual wxString OnGetItem(size_t n) const = 0;
	72
	73	// this function may be overridden to decorate HTML returned by OnGetItem()
	74	virtual wxString OnGetItemMarkup(size_t n) const;
	75
	76
9a9b4940 VZ	77	// this method allows to customize the selection appearance: it may be used
	78	// to specify the colour of the text which normally has the given colour
	79	// colFg when it is inside the selection
	80	//
	81	// by default, the original colour is not used at all and all text has the
	82	// same (default for this system) colour inside selection
	83	virtual wxColour GetSelectedTextColour(const wxColour& colFg) const;
	84
	85	// this is the same as GetSelectedTextColour() but allows to customize the
	86	// background colour -- this is even more rarely used as you can change it
	87	// globally using SetSelectionBackground()
	88	virtual wxColour GetSelectedTextBgColour(const wxColour& colBg) const;
	89
	90
e0c6027b VZ	91	// we implement both of these functions in terms of OnGetItem(), they are
	92	// not supposed to be overridden by our descendants
	93	virtual void OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const;
	94	virtual wxCoord OnMeasureItem(size_t n) const;
	95
	96
5ecdc7ab VZ	97	// event handlers
	98	void OnSize(wxSizeEvent& event);
	99
	100
e0c6027b VZ	101	// common part of all ctors
	102	void Init();
	103
	104	// ensure that the given item is cached
	105	void CacheItem(size_t n) const;
	106
	107	private:
9a9b4940	108	// this class caches the pre-parsed HTML to speed up display
e0c6027b VZ	109	wxHtmlListBoxCache *m_cache;
	110
	111	// HTML parser we use
	112	wxHtmlWinParser *m_htmlParser;
5ecdc7ab	113
9a9b4940 VZ	114	// rendering style for the parser which allows us to customize our colours
	115	wxHtmlListBoxStyle *m_htmlRendStyle;
	116
	117
	118	// it calls our GetSelectedTextColour() and GetSelectedTextBgColour()
	119	friend class wxHtmlListBoxStyle;
	120
5ecdc7ab VZ	121
5ecdc7ab VZ	122	DECLARE_EVENT_TABLE()
27d0dcd0	123	DECLARE_NO_COPY_CLASS(wxHtmlListBox)
e0c6027b VZ	124	};
	125
	126	#endif // _WX_HTMLLBOX_H_
	127