listbase.h

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///////////////////////////////////////////////////////////////////////////////
// Name:        wx/listctrl.h
// Purpose:     wxListCtrl class
// Author:      Vadim Zeitlin
// Modified by:
// Created:     04.12.99
// RCS-ID:      $Id: listbase.h,v 1.20 2005/05/22 12:10:47 JS Exp $
// Copyright:   (c) wxWidgets team
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#ifndef _WX_LISTBASE_H_BASE_
#define _WX_LISTBASE_H_BASE_

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
//    #pragma interface "listctrlbase.h"
#endif

#include "wx/defs.h"

#if wxUSE_LISTCTRL

#include "wx/colour.h"
#include "wx/font.h"
#include "wx/gdicmn.h"

#include "wx/event.h"

// ----------------------------------------------------------------------------
// types
// ----------------------------------------------------------------------------

// type of compare function for wxListCtrl sort operation
typedef int (wxCALLBACK *wxListCtrlCompare)(long item1, long item2, long sortData);

// ----------------------------------------------------------------------------
// wxListCtrl constants
// ----------------------------------------------------------------------------

// style flags
#define wxLC_VRULES          0x0001
#define wxLC_HRULES          0x0002

#define wxLC_ICON            0x0004
#define wxLC_SMALL_ICON      0x0008
#define wxLC_LIST            0x0010
#define wxLC_REPORT          0x0020

#define wxLC_ALIGN_TOP       0x0040
#define wxLC_ALIGN_LEFT      0x0080
#define wxLC_AUTOARRANGE     0x0100
#define wxLC_VIRTUAL         0x0200
#define wxLC_EDIT_LABELS     0x0400
#define wxLC_NO_HEADER       0x0800
#define wxLC_NO_SORT_HEADER  0x1000
#define wxLC_SINGLE_SEL      0x2000
#define wxLC_SORT_ASCENDING  0x4000
#define wxLC_SORT_DESCENDING 0x8000

#define wxLC_MASK_TYPE       (wxLC_ICON | wxLC_SMALL_ICON | wxLC_LIST | wxLC_REPORT)
#define wxLC_MASK_ALIGN      (wxLC_ALIGN_TOP | wxLC_ALIGN_LEFT)
#define wxLC_MASK_SORT       (wxLC_SORT_ASCENDING | wxLC_SORT_DESCENDING)

// for compatibility only
#define wxLC_USER_TEXT       wxLC_VIRTUAL

// Omitted because
//  (a) too much detail
//  (b) not enough style flags
//  (c) not implemented anyhow in the generic version
//
// #define wxLC_NO_SCROLL
// #define wxLC_NO_LABEL_WRAP
// #define wxLC_OWNERDRAW_FIXED
// #define wxLC_SHOW_SEL_ALWAYS

// Mask flags to tell app/GUI what fields of wxListItem are valid
#define wxLIST_MASK_STATE           0x0001
#define wxLIST_MASK_TEXT            0x0002
#define wxLIST_MASK_IMAGE           0x0004
#define wxLIST_MASK_DATA            0x0008
#define wxLIST_SET_ITEM             0x0010
#define wxLIST_MASK_WIDTH           0x0020
#define wxLIST_MASK_FORMAT          0x0040

// State flags for indicating the state of an item
#define wxLIST_STATE_DONTCARE       0x0000
#define wxLIST_STATE_DROPHILITED    0x0001      // MSW only
#define wxLIST_STATE_FOCUSED        0x0002
#define wxLIST_STATE_SELECTED       0x0004
#define wxLIST_STATE_CUT            0x0008      // MSW only
#define wxLIST_STATE_DISABLED       0x0010      // OS2 only
#define wxLIST_STATE_FILTERED       0x0020      // OS2 only
#define wxLIST_STATE_INUSE          0x0040      // OS2 only
#define wxLIST_STATE_PICKED         0x0080      // OS2 only
#define wxLIST_STATE_SOURCE         0x0100      // OS2 only

// Hit test flags, used in HitTest
#define wxLIST_HITTEST_ABOVE            0x0001  // Above the client area.
#define wxLIST_HITTEST_BELOW            0x0002  // Below the client area.
#define wxLIST_HITTEST_NOWHERE          0x0004  // In the client area but below the last item.
#define wxLIST_HITTEST_ONITEMICON       0x0020  // On the bitmap associated with an item.
#define wxLIST_HITTEST_ONITEMLABEL      0x0080  // On the label (string) associated with an item.
#define wxLIST_HITTEST_ONITEMRIGHT      0x0100  // In the area to the right of an item.
#define wxLIST_HITTEST_ONITEMSTATEICON  0x0200  // On the state icon for a tree view item that is in a user-defined state.
#define wxLIST_HITTEST_TOLEFT           0x0400  // To the left of the client area.
#define wxLIST_HITTEST_TORIGHT          0x0800  // To the right of the client area.

#define wxLIST_HITTEST_ONITEM (wxLIST_HITTEST_ONITEMICON | wxLIST_HITTEST_ONITEMLABEL | wxLIST_HITTEST_ONITEMSTATEICON)

// Flags for GetNextItem (MSW only except wxLIST_NEXT_ALL)
enum
{
    wxLIST_NEXT_ABOVE,          // Searches for an item above the specified item
    wxLIST_NEXT_ALL,            // Searches for subsequent item by index
    wxLIST_NEXT_BELOW,          // Searches for an item below the specified item
    wxLIST_NEXT_LEFT,           // Searches for an item to the left of the specified item
    wxLIST_NEXT_RIGHT           // Searches for an item to the right of the specified item
};

// Alignment flags for Arrange (MSW only except wxLIST_ALIGN_LEFT)
enum
{
    wxLIST_ALIGN_DEFAULT,
    wxLIST_ALIGN_LEFT,
    wxLIST_ALIGN_TOP,
    wxLIST_ALIGN_SNAP_TO_GRID
};

// Column format (MSW only except wxLIST_FORMAT_LEFT)
enum wxListColumnFormat
{
    wxLIST_FORMAT_LEFT,
    wxLIST_FORMAT_RIGHT,
    wxLIST_FORMAT_CENTRE,
    wxLIST_FORMAT_CENTER = wxLIST_FORMAT_CENTRE
};

// Autosize values for SetColumnWidth
enum
{
    wxLIST_AUTOSIZE = -1,
    wxLIST_AUTOSIZE_USEHEADER = -2      // partly supported by generic version
};

// Flag values for GetItemRect
enum
{
    wxLIST_RECT_BOUNDS,
    wxLIST_RECT_ICON,
    wxLIST_RECT_LABEL
};

// Flag values for FindItem (MSW only)
enum
{
    wxLIST_FIND_UP,
    wxLIST_FIND_DOWN,
    wxLIST_FIND_LEFT,
    wxLIST_FIND_RIGHT
};

// ----------------------------------------------------------------------------
// wxListItemAttr: a structure containing the visual attributes of an item
// ----------------------------------------------------------------------------

class WXDLLEXPORT wxListItemAttr
{
public:
    // ctors
    wxListItemAttr() { }
    wxListItemAttr(const wxColour& colText,
                   const wxColour& colBack,
                   const wxFont& font)
        : m_colText(colText), m_colBack(colBack), m_font(font) { }

    // setters
    void SetTextColour(const wxColour& colText) { m_colText = colText; }
    void SetBackgroundColour(const wxColour& colBack) { m_colBack = colBack; }
    void SetFont(const wxFont& font) { m_font = font; }

    // accessors
    bool HasTextColour() const { return m_colText.Ok(); }
    bool HasBackgroundColour() const { return m_colBack.Ok(); }
    bool HasFont() const { return m_font.Ok(); }

    const wxColour& GetTextColour() const { return m_colText; }
    const wxColour& GetBackgroundColour() const { return m_colBack; }
    const wxFont& GetFont() const { return m_font; }

private:
    wxColour m_colText,
             m_colBack;
    wxFont   m_font;
};

// ----------------------------------------------------------------------------
// wxListItem: the item or column info, used to exchange data with wxListCtrl
// ----------------------------------------------------------------------------

class WXDLLEXPORT wxListItem : public wxObject
{
public:
    wxListItem() { Init(); m_attr = NULL; }
    wxListItem(const wxListItem& item)
        : wxObject(),
          m_mask(item.m_mask),
          m_itemId(item.m_itemId),
          m_col(item.m_col),
          m_state(item.m_state),
          m_stateMask(item.m_stateMask),
          m_text(item.m_text),
          m_image(item.m_image),
          m_data(item.m_data),
          m_format(item.m_format),
          m_width(item.m_width),
          m_attr(NULL)
    {
        // copy list item attributes
        if( item.HasAttributes() )
            m_attr = new wxListItemAttr(*item.GetAttributes());
    }
    virtual ~wxListItem() { delete m_attr; }

    // resetting
    void Clear() { Init(); m_text.clear(); ClearAttributes(); }
    void ClearAttributes() { if ( m_attr ) { delete m_attr; m_attr = NULL; } }

    // setters
    void SetMask(long mask)
        { m_mask = mask; }
    void SetId(long id)
        { m_itemId = id; }
    void SetColumn(int col)
        { m_col = col; }
    void SetState(long state)
        { m_mask |= wxLIST_MASK_STATE; m_state = state; m_stateMask |= state; }
    void SetStateMask(long stateMask)
        { m_stateMask = stateMask; }
    void SetText(const wxString& text)
        { m_mask |= wxLIST_MASK_TEXT; m_text = text; }
    void SetImage(int image)
        { m_mask |= wxLIST_MASK_IMAGE; m_image = image; }
    void SetData(long data)