// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
- #pragma implementation "listbox.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/ownerdrw.h"
#endif
-#ifdef __GNUWIN32_OLD__
- #include "wx/msw/gnuwin32/extra.h"
-#endif
-
#if wxUSE_EXTENDED_RTTI
WX_DEFINE_FLAGS( wxListBoxStyle )
-WX_BEGIN_FLAGS( wxListBoxStyle )
+wxBEGIN_FLAGS( wxListBoxStyle )
// new style border flags, we put them first to
// use them for streaming out
- WX_FLAGS_MEMBER(wxBORDER_SIMPLE)
- WX_FLAGS_MEMBER(wxBORDER_SUNKEN)
- WX_FLAGS_MEMBER(wxBORDER_DOUBLE)
- WX_FLAGS_MEMBER(wxBORDER_RAISED)
- WX_FLAGS_MEMBER(wxBORDER_STATIC)
- WX_FLAGS_MEMBER(wxBORDER_NONE)
-
+ wxFLAGS_MEMBER(wxBORDER_SIMPLE)
+ wxFLAGS_MEMBER(wxBORDER_SUNKEN)
+ wxFLAGS_MEMBER(wxBORDER_DOUBLE)
+ wxFLAGS_MEMBER(wxBORDER_RAISED)
+ wxFLAGS_MEMBER(wxBORDER_STATIC)
+ wxFLAGS_MEMBER(wxBORDER_NONE)
+
// old style border flags
- WX_FLAGS_MEMBER(wxSIMPLE_BORDER)
- WX_FLAGS_MEMBER(wxSUNKEN_BORDER)
- WX_FLAGS_MEMBER(wxDOUBLE_BORDER)
- WX_FLAGS_MEMBER(wxRAISED_BORDER)
- WX_FLAGS_MEMBER(wxSTATIC_BORDER)
- WX_FLAGS_MEMBER(wxNO_BORDER)
+ wxFLAGS_MEMBER(wxSIMPLE_BORDER)
+ wxFLAGS_MEMBER(wxSUNKEN_BORDER)
+ wxFLAGS_MEMBER(wxDOUBLE_BORDER)
+ wxFLAGS_MEMBER(wxRAISED_BORDER)
+ wxFLAGS_MEMBER(wxSTATIC_BORDER)
+ wxFLAGS_MEMBER(wxBORDER)
// standard window styles
- WX_FLAGS_MEMBER(wxTAB_TRAVERSAL)
- WX_FLAGS_MEMBER(wxCLIP_CHILDREN)
- WX_FLAGS_MEMBER(wxTRANSPARENT_WINDOW)
- WX_FLAGS_MEMBER(wxWANTS_CHARS)
- WX_FLAGS_MEMBER(wxNO_FULL_REPAINT_ON_RESIZE)
- WX_FLAGS_MEMBER(wxALWAYS_SHOW_SB )
- WX_FLAGS_MEMBER(wxVSCROLL)
- WX_FLAGS_MEMBER(wxHSCROLL)
-
- WX_FLAGS_MEMBER(wxLB_SINGLE)
- WX_FLAGS_MEMBER(wxLB_MULTIPLE)
- WX_FLAGS_MEMBER(wxLB_EXTENDED)
- WX_FLAGS_MEMBER(wxLB_HSCROLL)
- WX_FLAGS_MEMBER(wxLB_ALWAYS_SB)
- WX_FLAGS_MEMBER(wxLB_NEEDED_SB)
- WX_FLAGS_MEMBER(wxLB_SORT)
-
-WX_END_FLAGS( wxListBoxStyle )
+ wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
+ wxFLAGS_MEMBER(wxCLIP_CHILDREN)
+ wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
+ wxFLAGS_MEMBER(wxWANTS_CHARS)
+ wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
+ wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
+ wxFLAGS_MEMBER(wxVSCROLL)
+ wxFLAGS_MEMBER(wxHSCROLL)
+
+ wxFLAGS_MEMBER(wxLB_SINGLE)
+ wxFLAGS_MEMBER(wxLB_MULTIPLE)
+ wxFLAGS_MEMBER(wxLB_EXTENDED)
+ wxFLAGS_MEMBER(wxLB_HSCROLL)
+ wxFLAGS_MEMBER(wxLB_ALWAYS_SB)
+ wxFLAGS_MEMBER(wxLB_NEEDED_SB)
+ wxFLAGS_MEMBER(wxLB_SORT)
+
+wxEND_FLAGS( wxListBoxStyle )
IMPLEMENT_DYNAMIC_CLASS_XTI(wxListBox, wxControl,"wx/listbox.h")
-WX_BEGIN_PROPERTIES_TABLE(wxListBox)
- WX_DELEGATE( OnSelect , wxEVT_COMMAND_LISTBOX_SELECTED , wxCommandEvent )
- WX_DELEGATE( OnDoubleClick , wxEVT_COMMAND_LISTBOX_DOUBLECLICKED , wxCommandEvent )
+wxBEGIN_PROPERTIES_TABLE(wxListBox)
+ wxEVENT_PROPERTY( Select , wxEVT_COMMAND_LISTBOX_SELECTED , wxCommandEvent )
+ wxEVENT_PROPERTY( DoubleClick , wxEVT_COMMAND_LISTBOX_DOUBLECLICKED , wxCommandEvent )
- WX_PROPERTY( Font , wxFont , SetFont , GetFont , , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
- WX_PROPERTY_COLLECTION( Choices , wxArrayString , wxString , AppendString , GetStrings, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
- WX_PROPERTY( Selection ,int, SetSelection, GetSelection,, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
- WX_PROPERTY_FLAGS( WindowStyle , wxListBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
-WX_END_PROPERTIES_TABLE()
+ wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
+ wxPROPERTY_COLLECTION( Choices , wxArrayString , wxString , AppendString , GetStrings, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
+ wxPROPERTY( Selection ,int, SetSelection, GetSelection, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
+ wxPROPERTY_FLAGS( WindowStyle , wxListBoxStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
+wxEND_PROPERTIES_TABLE()
-WX_BEGIN_HANDLERS_TABLE(wxListBox)
-WX_END_HANDLERS_TABLE()
+wxBEGIN_HANDLERS_TABLE(wxListBox)
+wxEND_HANDLERS_TABLE()
-WX_CONSTRUCTOR_4( wxListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
+wxCONSTRUCTOR_4( wxListBox , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
#else
IMPLEMENT_DYNAMIC_CLASS(wxListBox, wxControl)
#endif
/*
TODO PROPERTIES
- selection
- content
- item
+ selection
+ content
+ item
*/
// ============================================================================
wxListBoxItem(const wxString& str = wxEmptyString);
};
-wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, FALSE)
+wxListBoxItem::wxListBoxItem(const wxString& str) : wxOwnerDrawn(str, false)
{
// no bitmaps/checkmarks
SetMarginWidth(0);
const wxString& name)
{
m_noItems = 0;
- m_hWnd = 0;
m_selected = 0;
- SetName(name);
-#if wxUSE_VALIDATORS
- SetValidator(validator);
-#endif // wxUSE_VALIDATORS
+ // initialize base class fields
+ if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+ return false;
- if (parent)
- parent->AddChild(this);
-
- SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
- SetForegroundColour(parent->GetForegroundColour());
-
- m_windowId = ( id == -1 ) ? (int)NewControlId() : id;
-
- int x = pos.x;
- int y = pos.y;
- int width = size.x;
- int height = size.y;
- m_windowStyle = style;
+ // create the native control
+ if ( !MSWCreateControl(_T("LISTBOX"), wxEmptyString, pos, size) )
+ {
+ // control creation failed
+ return false;
+ }
- DWORD wstyle = WS_VISIBLE | WS_CHILD | WS_VSCROLL | WS_TABSTOP |
- LBS_NOTIFY | LBS_HASSTRINGS ;
+ // initialize the contents
+ for ( int i = 0; i < n; i++ )
+ {
+ Append(choices[i]);
+ }
- wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED),
- _T("only one of listbox selection modes can be specified") );
+ // now we can compute our best size correctly, so do it if necessary
+ SetBestSize(size);
- if ( (m_windowStyle & wxBORDER_MASK) == wxBORDER_DEFAULT )
- m_windowStyle |= wxBORDER_SUNKEN;
+ return true;
+}
- if ( m_windowStyle & wxCLIP_SIBLINGS )
- wstyle |= WS_CLIPSIBLINGS;
+bool wxListBox::Create(wxWindow *parent,
+ wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& size,
+ const wxArrayString& choices,
+ long style,
+ const wxValidator& validator,
+ const wxString& name)
+{
+ wxCArrayString chs(choices);
+ return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
+ style, validator, name);
+}
- if (m_windowStyle & wxLB_MULTIPLE)
- wstyle |= LBS_MULTIPLESEL;
- else if (m_windowStyle & wxLB_EXTENDED)
- wstyle |= LBS_EXTENDEDSEL;
+wxListBox::~wxListBox()
+{
+ Free();
+}
- if (m_windowStyle & wxLB_ALWAYS_SB)
- wstyle |= LBS_DISABLENOSCROLL;
- if (m_windowStyle & wxLB_HSCROLL)
- wstyle |= WS_HSCROLL;
- if (m_windowStyle & wxLB_SORT)
- wstyle |= LBS_SORT;
+WXDWORD wxListBox::MSWGetStyle(long style, WXDWORD *exstyle) const
+{
+ WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
-#if wxUSE_OWNER_DRAWN && !defined(__WXWINCE__)
- if ( m_windowStyle & wxLB_OWNERDRAW ) {
- // we don't support LBS_OWNERDRAWVARIABLE yet
- wstyle |= LBS_OWNERDRAWFIXED;
- }
-#endif
+ // always show the vertical scrollbar if necessary -- otherwise it is
+ // impossible to use the control with the mouse
+ msStyle |= WS_VSCROLL;
- // Without this style, you get unexpected heights, so e.g. constraint layout
- // doesn't work properly
- wstyle |= LBS_NOINTEGRALHEIGHT;
+ // we always want to get the notifications
+ msStyle |= LBS_NOTIFY;
- WXDWORD exStyle = 0;
- (void) MSWGetStyle(m_windowStyle, & exStyle) ;
+ // without this style, you get unexpected heights, so e.g. constraint
+ // layout doesn't work properly
+ msStyle |= LBS_NOINTEGRALHEIGHT;
- m_hWnd = (WXHWND)::CreateWindowEx(exStyle, wxT("LISTBOX"), NULL,
- wstyle ,
- 0, 0, 0, 0,
- (HWND)parent->GetHWND(), (HMENU)m_windowId,
- wxGetInstance(), NULL);
+ wxASSERT_MSG( !(style & wxLB_MULTIPLE) || !(style & wxLB_EXTENDED),
+ _T("only one of listbox selection modes can be specified") );
- wxCHECK_MSG( m_hWnd, FALSE, wxT("Failed to create listbox") );
+ if ( style & wxLB_MULTIPLE )
+ msStyle |= LBS_MULTIPLESEL;
+ else if ( style & wxLB_EXTENDED )
+ msStyle |= LBS_EXTENDEDSEL;
- // Subclass again to catch messages
- SubclassWin(m_hWnd);
+ if ( m_windowStyle & wxLB_ALWAYS_SB )
+ msStyle |= LBS_DISABLENOSCROLL;
+ if ( m_windowStyle & wxLB_HSCROLL )
+ msStyle |= WS_HSCROLL;
+ if ( m_windowStyle & wxLB_SORT )
+ msStyle |= LBS_SORT;
- size_t ui;
- for (ui = 0; ui < (size_t)n; ui++) {
- Append(choices[ui]);
+#if wxUSE_OWNER_DRAWN && !defined(__WXWINCE__)
+ if ( m_windowStyle & wxLB_OWNERDRAW )
+ {
+ // we don't support LBS_OWNERDRAWVARIABLE yet and we also always put
+ // the strings in the listbox for simplicity even though we could have
+ // avoided it in this case
+ msStyle |= LBS_OWNERDRAWFIXED | LBS_HASSTRINGS;
}
+#endif // wxUSE_OWNER_DRAWN
- if ( (m_windowStyle & wxLB_MULTIPLE) == 0 )
- SendMessage(GetHwnd(), LB_SETCURSEL, 0, 0);
-
- SetFont(parent->GetFont());
-
- SetSize(x, y, width, height);
-
- return TRUE;
-}
-
-wxListBox::~wxListBox()
-{
- Free();
-}
-
-void wxListBox::SetupColours()
-{
- SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
- SetForegroundColour(GetParent()->GetForegroundColour());
+ return msStyle;
}
// ----------------------------------------------------------------------------
m_noItems--;
SetHorizontalExtent(wxEmptyString);
+
+ InvalidateBestSize();
}
int wxListBox::DoAppend(const wxString& item)
SetHorizontalExtent(item);
+ InvalidateBestSize();
return index;
}
// show the listbox back if we hid it
ShowWindow(GetHwnd(), SW_SHOW);
}
+
+ InvalidateBestSize();
}
-int wxListBox::FindString(const wxString& s) const
+int wxListBox::FindString(const wxString& s, bool bCase) const
{
- int pos = ListBox_FindStringExact(GetHwnd(), (WPARAM)-1, s);
+ // back to base class search for not native search type
+ if (bCase)
+ return wxItemContainerImmutable::FindString( s, bCase );
+
+ int pos = ListBox_FindStringExact(GetHwnd(), -1, s);
if (pos == LB_ERR)
return wxNOT_FOUND;
else
m_noItems = 0;
SetHorizontalExtent();
+
+ InvalidateBestSize();
}
void wxListBox::Free()
}
}
-void wxListBox::SetSelection(int N, bool select)
+void wxListBox::DoSetSelection(int N, bool select)
{
- wxCHECK_RET( N >= 0 && N < m_noItems,
+ wxCHECK_RET( N == wxNOT_FOUND ||
+ (N >= 0 && N < m_noItems),
wxT("invalid index in wxListBox::SetSelection") );
if ( HasMultipleSelection() )
bool wxListBox::IsSelected(int N) const
{
- wxCHECK_MSG( N >= 0 && N < m_noItems, FALSE,
+ wxCHECK_MSG( N >= 0 && N < m_noItems, false,
wxT("invalid index in wxListBox::Selected") );
- return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? FALSE : TRUE;
+ return SendMessage(GetHwnd(), LB_GETSEL, N, 0) == 0 ? false : true;
}
wxClientData* wxListBox::DoGetItemClientObject(int n) const
wxString wxListBox::GetString(int N) const
{
wxCHECK_MSG( N >= 0 && N < m_noItems, wxEmptyString,
- wxT("invalid index in wxListBox::GetClientData") );
+ wxT("invalid index in wxListBox::GetString") );
int len = ListBox_GetTextLen(GetHwnd(), N);
// +1 for terminating NUL
wxString result;
- ListBox_GetText(GetHwnd(), N, wxStringBuffer(result, len + 1));
+ ListBox_GetText(GetHwnd(), N, (wxChar*)wxStringBuffer(result, len + 1));
return result;
}
ListBox_SetItemData(GetHwnd(), idx, pNewItem);
}
+#else
+ wxUnusedVar(idx);
#endif // wxUSE_OWNER_DRAWN
}
m_noItems += nItems;
SetHorizontalExtent();
+
+ InvalidateBestSize();
+}
+
+int wxListBox::DoListHitTest(const wxPoint& point) const
+{
+ LRESULT lRes = ::SendMessage(GetHwnd(), LB_ITEMFROMPOINT,
+ 0L, MAKELONG(point.x, point.y));
+
+ // non zero high-order word means that this item is outside of the client
+ // area, IOW the point is outside of the listbox
+ return HIWORD(lRes) ? wxNOT_FOUND : lRes;
}
void wxListBox::SetString(int N, const wxString& s)
else if ( oldObjData )
SetClientObject(N, oldObjData);
- // we may have lost the selection
- if ( wasSelected )
- Select(N);
-
#if wxUSE_OWNER_DRAWN
if ( m_windowStyle & wxLB_OWNERDRAW )
{
ListBox_SetItemData(GetHwnd(), N, m_aItems[N]);
}
#endif //USE_OWNER_DRAWN
+
+ // we may have lost the selection
+ if ( wasSelected )
+ Select(N);
+
+ InvalidateBestSize();
}
int wxListBox::GetCount() const
return;
TEXTMETRIC lpTextMetric;
- if ( !s.IsEmpty() )
+ if ( !s.empty() )
{
int existingExtent = (int)SendMessage(GetHwnd(), LB_GETHORIZONTALEXTENT, 0, 0L);
HDC dc = GetWindowDC(GetHwnd());
HFONT oldFont = 0;
- if (GetFont().Ok() && GetFont().GetResourceHandle())
+ if (GetFont().Ok() && GetFont().GetResourceHandle() != 0)
oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle());
GetTextMetrics(dc, &lpTextMetric);
SIZE extentXY;
- ::GetTextExtentPoint(dc, (LPTSTR) (const wxChar *)s, s.Length(), &extentXY);
+ ::GetTextExtentPoint32(dc, (LPTSTR) (const wxChar *)s, s.Length(), &extentXY);
int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
if (oldFont)
int largestExtent = 0;
HDC dc = GetWindowDC(GetHwnd());
HFONT oldFont = 0;
- if (GetFont().Ok() && GetFont().GetResourceHandle())
+ if (GetFont().Ok() && GetFont().GetResourceHandle() != 0)
oldFont = (HFONT) ::SelectObject(dc, (HFONT) GetFont().GetResourceHandle());
GetTextMetrics(dc, &lpTextMetric);
- // FIXME: buffer overflow!!
- wxChar buf[1024];
for (int i = 0; i < m_noItems; i++)
{
- int len = (int)SendMessage(GetHwnd(), LB_GETTEXT, i, (LPARAM)buf);
- buf[len] = 0;
+ wxString str = GetString(i);
SIZE extentXY;
- ::GetTextExtentPoint(dc, buf, len, &extentXY);
+ ::GetTextExtentPoint32(dc, str.c_str(), str.length(), &extentXY);
int extentX = (int)(extentXY.cx + lpTextMetric.tmAveCharWidth);
if (extentX > largestExtent)
largestExtent = extentX;
// the listbox should be slightly larger than the widest string
int cx, cy;
- wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
+ wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
wListbox += 3*cx;
+ // Add room for the scrollbar
+ wListbox += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
+
// don't make the listbox too tall (limit height to 10 items) but don't
// make it too small neither
int hListbox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*
wxMin(wxMax(m_noItems, 3), 10);
- return wxSize(wListbox, hListbox);
+ wxSize best(wListbox, hListbox);
+ CacheBestSize(best);
+ return best;
}
// ----------------------------------------------------------------------------
else
{
// some event we're not interested in
- return FALSE;
+ return false;
}
wxCommandEvent event(evtType, m_windowId);
event.SetClientData( GetClientData(n) );
event.SetString( GetString(n) );
- event.SetExtraLong( HasMultipleSelection() ? IsSelected(n) : TRUE );
+ event.SetExtraLong( HasMultipleSelection() ? IsSelected(n) : true );
}
- event.m_commandInt = n;
+ event.SetInt(n);
return GetEventHandler()->ProcessEvent(event);
}
bool wxListBox::MSWOnMeasure(WXMEASUREITEMSTRUCT *item)
{
// only owner-drawn control should receive this message
- wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
+ wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), false );
MEASUREITEMSTRUCT *pStruct = (MEASUREITEMSTRUCT *)item;
HDC hdc = CreateIC(wxT("DISPLAY"), NULL, NULL, 0);
#endif
- wxDC dc;
- dc.SetHDC((WXHDC)hdc);
- dc.SetFont(wxSystemSettings::GetFont(wxSYS_ANSI_VAR_FONT));
-
- pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
- pStruct->itemWidth = dc.GetCharWidth();
+ {
+ wxDCTemp dc((WXHDC)hdc);
+ dc.SetFont(GetFont());
- dc.SetHDC(0);
+ pStruct->itemHeight = dc.GetCharHeight() + 2*OWNER_DRAWN_LISTBOX_EXTRA_SPACE;
+ pStruct->itemWidth = dc.GetCharWidth();
+ }
+#ifdef __WXWINCE__
+ ReleaseDC(NULL, hdc);
+#else
DeleteDC(hdc);
+#endif
- return TRUE;
+ return true;
}
// forward the message to the appropriate item
bool wxListBox::MSWOnDraw(WXDRAWITEMSTRUCT *item)
{
// only owner-drawn control should receive this message
- wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), FALSE );
+ wxCHECK( ((m_windowStyle & wxLB_OWNERDRAW) == wxLB_OWNERDRAW), false );
DRAWITEMSTRUCT *pStruct = (DRAWITEMSTRUCT *)item;
UINT itemID = pStruct->itemID;
// the item may be -1 for an empty listbox
if ( itemID == (UINT)-1 )
- return FALSE;
+ return false;
long data = ListBox_GetItemData(GetHwnd(), pStruct->itemID);
- wxCHECK( data && (data != LB_ERR), FALSE );
+ wxCHECK( data && (data != LB_ERR), false );
wxListBoxItem *pItem = (wxListBoxItem *)data;
wxDCTemp dc((WXHDC)pStruct->hDC);
- wxRect rect(wxPoint(pStruct->rcItem.left, pStruct->rcItem.top),
- wxPoint(pStruct->rcItem.right, pStruct->rcItem.bottom));
+ wxPoint pt1(pStruct->rcItem.left, pStruct->rcItem.top);
+ wxPoint pt2(pStruct->rcItem.right, pStruct->rcItem.bottom);
+ wxRect rect(pt1, pt2);
return pItem->OnDrawItem(dc, rect,
(wxOwnerDrawn::wxODAction)pStruct->itemAction,
projects / wxWidgets.git / blobdiff