/////////////////////////////////////////////////////////////////////////////
-// Name: mdi.cpp
+// Name: src/motif/mdi.cpp
// Purpose: MDI classes
// Author: Julian Smart
// Modified by:
// Created: 17/09/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
-// Licence: wxWindows licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "mdi.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __VMS
+#define XtDisplay XTDISPLAY
+#define XtWindow XTWINDOW
#endif
#include "wx/mdi.h"
-#include "wx/menu.h"
-#include "wx/settings.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/menu.h"
+ #include "wx/icon.h"
+ #include "wx/settings.h"
+#endif
+
+#ifdef __VMS__
+#pragma message disable nosimpint
+#endif
+#include <Xm/Xm.h>
+#include <Xm/BulletinB.h>
+#include <Xm/Form.h>
+#include <Xm/MainW.h>
+#include <Xm/RowColumn.h>
+#include <Xm/CascadeBG.h>
+#include <Xm/Text.h>
+#include <Xm/PushBG.h>
+#include <Xm/AtomMgr.h>
+#include <Xm/Protocols.h>
+#ifdef __VMS__
+#pragma message enable nosimpint
+#endif
+
+#include "wx/motif/private.h"
extern wxList wxModelessWindows;
-#if !USE_SHARED_LIBRARY
+// Implemented in frame.cpp
+extern void wxFrameFocusProc(Widget workArea, XtPointer clientData,
+ XmAnyCallbackStruct *cbs);
+
+#define wxID_NOTEBOOK_CLIENT_AREA wxID_HIGHEST + 100
+
IMPLEMENT_DYNAMIC_CLASS(wxMDIParentFrame, wxFrame)
IMPLEMENT_DYNAMIC_CLASS(wxMDIChildFrame, wxFrame)
-IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxWindow)
+IMPLEMENT_DYNAMIC_CLASS(wxMDIClientWindow, wxNotebook)
BEGIN_EVENT_TABLE(wxMDIParentFrame, wxFrame)
- EVT_SIZE(wxMDIParentFrame::OnSize)
- EVT_ACTIVATE(wxMDIParentFrame::OnActivate)
- EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
+ EVT_SIZE(wxMDIParentFrame::OnSize)
+ EVT_ACTIVATE(wxMDIParentFrame::OnActivate)
+ EVT_SYS_COLOUR_CHANGED(wxMDIParentFrame::OnSysColourChanged)
+ EVT_MENU_HIGHLIGHT_ALL(wxMDIParentFrame::OnMenuHighlight)
END_EVENT_TABLE()
-BEGIN_EVENT_TABLE(wxMDIClientWindow, wxWindow)
- EVT_SCROLL(wxMDIClientWindow::OnScroll)
+BEGIN_EVENT_TABLE(wxMDIClientWindow, wxNotebook)
+ EVT_SCROLL(wxMDIClientWindow::OnScroll)
+ EVT_NOTEBOOK_PAGE_CHANGED(wxID_NOTEBOOK_CLIENT_AREA, wxMDIClientWindow::OnPageChanged)
END_EVENT_TABLE()
-#endif
// Parent frame
wxMDIParentFrame::wxMDIParentFrame()
{
+ m_clientWindow = (wxMDIClientWindow*) NULL;
+ m_activeChild = (wxMDIChildFrame*) NULL;
+ m_activeMenuBar = (wxMenuBar*) NULL;
}
bool wxMDIParentFrame::Create(wxWindow *parent,
- wxWindowID id,
- const wxString& title,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name)
+ wxWindowID id,
+ const wxString& title,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxString& name)
{
- if (!parent)
- wxTopLevelWindows.Append(this);
-
- SetName(name);
- m_windowStyle = style;
+ m_clientWindow = (wxMDIClientWindow*) NULL;
+ m_activeChild = (wxMDIChildFrame*) NULL;
+ m_activeMenuBar = (wxMenuBar*) NULL;
- if (parent) parent->AddChild(this);
-
- if ( id > -1 )
- m_windowId = id;
- else
- m_windowId = (int)NewControlId();
+ bool success = wxFrame::Create(parent, id, title, pos, size, style, name);
+ if (success)
+ {
+ // TODO: app cannot override OnCreateClient since
+ // wxMDIParentFrame::OnCreateClient will still be called
+ // (we're in the constructor). How to resolve?
- // TODO: create MDI parent frame
+ m_clientWindow = OnCreateClient();
- wxModelessWindows.Append(this);
+ // Uses own style for client style
+ m_clientWindow->CreateClient(this, GetWindowStyleFlag());
- return TRUE;
+ int w, h;
+ GetClientSize(& w, & h);
+ m_clientWindow->SetSize(0, 0, w, h);
+ return true;
+ }
+ else
+ return false;
}
wxMDIParentFrame::~wxMDIParentFrame()
{
-}
+ // Make sure we delete the client window last of all
+ RemoveChild(m_clientWindow);
-// Get size *available for subwindows* i.e. excluding menu bar.
-void wxMDIParentFrame::GetClientSize(int *x, int *y) const
-{
- // TODO
+ DestroyChildren();
+
+ delete m_clientWindow;
+ m_clientWindow = NULL;
}
void wxMDIParentFrame::SetMenuBar(wxMenuBar *menu_bar)
{
- // TODO
- if (!menu_bar)
- {
- m_frameMenuBar = NULL;
- return;
- }
-
- if (menu_bar->m_menuBarFrame)
- return;
-
m_frameMenuBar = menu_bar;
+
+ SetChildMenuBar((wxMDIChildFrame*) NULL);
}
-void wxMDIParentFrame::OnSize(wxSizeEvent& event)
+void wxMDIParentFrame::OnSize(wxSizeEvent& WXUNUSED(event))
{
#if wxUSE_CONSTRAINTS
if (GetAutoLayout())
- Layout();
+ Layout();
#endif
int x = 0;
int y = 0;
GetClientWindow()->SetSize(x, y, width, height);
}
-void wxMDIParentFrame::OnActivate(wxActivateEvent& event)
+void wxMDIParentFrame::DoGetClientSize(int *width, int *height) const
{
- // Do nothing
+ wxFrame::DoGetClientSize(width, height);
+}
+
+void wxMDIParentFrame::OnActivate(wxActivateEvent& WXUNUSED(event))
+{
+ // Do nothing
}
// Returns the active MDI child window
wxMDIChildFrame *wxMDIParentFrame::GetActiveChild() const
{
- // TODO
- return NULL;
+ return m_activeChild;
}
// Create the client window class (don't Create the window,
// just return a new class)
wxMDIClientWindow *wxMDIParentFrame::OnCreateClient()
{
- return new wxMDIClientWindow ;
+ return new wxMDIClientWindow ;
+}
+
+// Set the child's menu into the parent frame
+void wxMDIParentFrame::SetChildMenuBar(wxMDIChildFrame* child)
+{
+ wxMenuBar* oldMenuBar = m_activeMenuBar;
+
+ if (child == (wxMDIChildFrame*) NULL) // No child: use parent frame
+ {
+ if (GetMenuBar() && (GetMenuBar() != m_activeMenuBar))
+ {
+ // if (m_activeMenuBar)
+ // m_activeMenuBar->DestroyMenuBar();
+
+ m_activeMenuBar = GetMenuBar();
+ m_activeMenuBar->CreateMenuBar(this);
+ /*
+ if (oldMenuBar && XtIsManaged((Widget) oldMenuBar->GetMainWidget()))
+ XtUnmanageChild((Widget) oldMenuBar->GetMainWidget());
+ */
+ if (oldMenuBar && oldMenuBar->GetMainWidget())
+ XtUnmapWidget((Widget) oldMenuBar->GetMainWidget());
+
+ }
+ }
+ else if (child->GetMenuBar() == (wxMenuBar*) NULL) // No child menu bar: use parent frame
+ {
+ if (GetMenuBar() && (GetMenuBar() != m_activeMenuBar))
+ {
+ // if (m_activeMenuBar)
+ // m_activeMenuBar->DestroyMenuBar();
+ m_activeMenuBar = GetMenuBar();
+ m_activeMenuBar->CreateMenuBar(this);
+ /*
+ if (oldMenuBar && XtIsManaged((Widget) oldMenuBar->GetMainWidget()))
+ XtUnmanageChild((Widget) oldMenuBar->GetMainWidget());
+ */
+ if (oldMenuBar && oldMenuBar->GetMainWidget())
+ XtUnmapWidget((Widget) oldMenuBar->GetMainWidget());
+ }
+ }
+ else // The child has a menubar
+ {
+ if (child->GetMenuBar() != m_activeMenuBar)
+ {
+ // if (m_activeMenuBar)
+ // m_activeMenuBar->DestroyMenuBar();
+
+ m_activeMenuBar = child->GetMenuBar();
+ m_activeMenuBar->CreateMenuBar(this);
+ /*
+ if (oldMenuBar && XtIsManaged((Widget) oldMenuBar->GetMainWidget()))
+ XtUnmanageChild((Widget) oldMenuBar->GetMainWidget());
+ */
+ if (oldMenuBar && oldMenuBar->GetMainWidget())
+ XtUnmapWidget((Widget) oldMenuBar->GetMainWidget());
+ }
+ }
+}
+
+// Redirect events to active child first
+bool wxMDIParentFrame::ProcessEvent(wxEvent& event)
+{
+ // Stops the same event being processed repeatedly
+ static wxEventType inEvent = wxEVT_NULL;
+ if (inEvent == event.GetEventType())
+ return false;
+
+ inEvent = event.GetEventType();
+
+ bool res = false;
+ if (m_activeChild && event.IsKindOf(CLASSINFO(wxCommandEvent)))
+ {
+ res = m_activeChild->GetEventHandler()->ProcessEvent(event);
+ }
+
+ if (!res)
+ res = GetEventHandler()->wxEvtHandler::ProcessEvent(event);
+
+ inEvent = wxEVT_NULL;
+
+ return res;
+}
+
+void wxMDIParentFrame::DoSetSize(int x, int y,
+ int width, int height,
+ int sizeFlags)
+{
+ wxWindow::DoSetSize(x, y, width, height, sizeFlags);
+}
+
+void wxMDIParentFrame::DoSetClientSize(int width, int height)
+{
+ wxWindow::DoSetClientSize(width, height);
}
// Responds to colour changes, and passes event on to children.
// TODO
}
-void wxMDIParentFrame::Tile()
+void wxMDIParentFrame::Tile(wxOrientation WXUNUSED(orient))
{
// TODO
}
// TODO
}
+// Default menu selection behaviour - display a help string
+void wxMDIParentFrame::OnMenuHighlight(wxMenuEvent& event)
+{
+ if (GetStatusBar())
+ {
+ if (event.GetMenuId() == -1)
+ SetStatusText(wxEmptyString);
+ else
+ {
+ wxMenuBar *menuBar = (wxMenuBar*) NULL;
+ if (GetActiveChild())
+ menuBar = GetActiveChild()->GetMenuBar();
+ else
+ menuBar = GetMenuBar();
+ if (menuBar)
+ {
+ wxString helpString(menuBar->GetHelpString(event.GetMenuId()));
+ if (!helpString.empty())
+ SetStatusText(helpString);
+ }
+ }
+ }
+}
+
// Child frame
wxMDIChildFrame::wxMDIChildFrame()
{
+ m_mdiParentFrame = (wxMDIParentFrame*) NULL;
}
bool wxMDIChildFrame::Create(wxMDIParentFrame *parent,
- wxWindowID id,
- const wxString& title,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name)
+ wxWindowID id,
+ const wxString& title,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxString& name)
{
SetName(name);
+ SetWindowStyleFlag(style);
if ( id > -1 )
m_windowId = id;
else
m_windowId = (int)NewControlId();
- if (parent) parent->AddChild(this);
+ wxMDIClientWindow* clientWindow = parent->GetClientWindow();
+
+ wxCHECK_MSG( clientWindow, false, "Missing MDI client window." );
+
+ clientWindow->AddChild(this);
+
+ SetMDIParentFrame(parent);
+ PreCreation();
+
+ int width = size.x;
+ int height = size.y;
+ if (width == -1)
+ width = 200; // TODO: give reasonable default
+ if (height == -1)
+ height = 200; // TODO: give reasonable default
+
+ // We're deactivating the old child
+ wxMDIChildFrame* oldActiveChild = parent->GetActiveChild();
+ if (oldActiveChild)
+ {
+ wxActivateEvent event(wxEVT_ACTIVATE, false, oldActiveChild->GetId());
+ event.SetEventObject( oldActiveChild );
+ oldActiveChild->GetEventHandler()->ProcessEvent(event);
+ }
+
+ // This is the currently active child
+ parent->SetActiveChild((wxMDIChildFrame*) this);
+
+ // This time we'll try a bog-standard bulletin board for
+ // the 'frame'. A main window doesn't seem to work.
+
+ m_mainWidget = (WXWidget) XtVaCreateWidget("client",
+ xmBulletinBoardWidgetClass, (Widget) clientWindow->GetTopWidget(),
+ XmNmarginWidth, 0,
+ XmNmarginHeight, 0,
+ /*
+ XmNrightAttachment, XmATTACH_FORM,
+ XmNleftAttachment, XmATTACH_FORM,
+ XmNtopAttachment, XmATTACH_FORM,
+ XmNbottomAttachment, XmATTACH_FORM,
+ */
+ XmNresizePolicy, XmRESIZE_NONE,
+ NULL);
+
+ XtAddEventHandler((Widget) m_mainWidget, ExposureMask,False,
+ wxUniversalRepaintProc, (XtPointer) this);
- // TODO: create child frame
+ PostCreation();
+ AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);
+
+ XtManageChild((Widget) m_mainWidget);
+
+ SetTitle(title);
+
+ clientWindow->AddPage(this, title, true);
+ clientWindow->Refresh();
+
+ // Positions the toolbar and status bar -- but we don't have any.
+ // PreResize();
wxModelessWindows.Append(this);
- return FALSE;
+ return true;
}
+
wxMDIChildFrame::~wxMDIChildFrame()
{
+ if (m_mainWidget)
+ XtRemoveEventHandler((Widget) m_mainWidget, ExposureMask,False,
+ wxUniversalRepaintProc, (XtPointer) this);
+
+ if (GetMDIParentFrame())
+ {
+ wxMDIParentFrame* parentFrame = GetMDIParentFrame();
+
+ if (parentFrame->GetActiveChild() == this)
+ parentFrame->SetActiveChild((wxMDIChildFrame*) NULL);
+ wxMDIClientWindow* clientWindow = parentFrame->GetClientWindow();
+
+ // Remove page if still there
+ {
+ int i = clientWindow->FindPage(this);
+
+ if (i != -1)
+ {
+ clientWindow->RemovePage(i);
+ clientWindow->Refresh();
+ }
+ }
+
+ // Set the selection to the first remaining page
+ if (clientWindow->GetPageCount() > 0)
+ {
+ wxMDIChildFrame* child = (wxMDIChildFrame*) clientWindow->GetPage(0);
+ parentFrame->SetActiveChild(child);
+ parentFrame->SetChildMenuBar(child);
+ }
+ else
+ {
+ parentFrame->SetActiveChild((wxMDIChildFrame*) NULL);
+ parentFrame->SetChildMenuBar((wxMDIChildFrame*) NULL);
+ }
+ }
}
+#if 0
+// Implementation: intercept and act upon raise and lower commands.
+void wxMDIChildFrame::OnRaise()
+{
+ wxMDIParentFrame* parentFrame = (wxMDIParentFrame*) GetParent() ;
+ wxMDIChildFrame* oldActiveChild = parentFrame->GetActiveChild();
+ parentFrame->SetActiveChild(this);
+
+ if (oldActiveChild)
+ {
+ wxActivateEvent event(wxEVT_ACTIVATE, false, oldActiveChild->GetId());
+ event.SetEventObject( oldActiveChild );
+ oldActiveChild->GetEventHandler()->ProcessEvent(event);
+ }
+
+ wxActivateEvent event(wxEVT_ACTIVATE, true, this->GetId());
+ event.SetEventObject( this );
+ this->GetEventHandler()->ProcessEvent(event);
+}
+
+void wxMDIChildFrame::OnLower()
+{
+ wxMDIParentFrame* parentFrame = (wxMDIParentFrame*) GetParent() ;
+ wxMDIChildFrame* oldActiveChild = parentFrame->GetActiveChild();
+
+ if (oldActiveChild == this)
+ {
+ wxActivateEvent event(wxEVT_ACTIVATE, false, oldActiveChild->GetId());
+ event.SetEventObject( oldActiveChild );
+ oldActiveChild->GetEventHandler()->ProcessEvent(event);
+ }
+ // TODO: unfortunately we don't now know which is the top-most child,
+ // so make the active child NULL.
+ parentFrame->SetActiveChild((wxMDIChildFrame*) NULL);
+}
+#endif
+
// Set the client size (i.e. leave the calculation of borders etc.
-// to wxWindows)
-void wxMDIChildFrame::SetClientSize(int width, int height)
+// to wxWidgets)
+void wxMDIChildFrame::DoSetClientSize(int width, int height)
{
- // TODO
+ wxWindow::DoSetClientSize(width, height);
}
-void wxMDIChildFrame::GetPosition(int *x, int *y) const
+void wxMDIChildFrame::DoGetClientSize(int* width, int* height) const
{
- // TODO
+ wxWindow::DoGetSize(width, height);
}
-void wxMDIChildFrame::SetMenuBar(wxMenuBar *menu_bar)
+void wxMDIChildFrame::DoSetSize(int x, int y, int width, int height, int sizeFlags)
{
- // TODO
- if (!menu_bar)
+ wxWindow::DoSetSize(x, y, width, height, sizeFlags);
+}
+
+void wxMDIChildFrame::DoGetSize(int* width, int* height) const
+{
+ wxWindow::DoGetSize(width, height);
+}
+
+void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
+{
+ wxWindow::DoGetPosition(x, y);
+}
+
+bool wxMDIChildFrame::Show(bool show)
+{
+ SetVisibleStatus( show );
+ return wxWindow::Show(show);
+}
+
+void wxMDIChildFrame::SetMenuBar(wxMenuBar *menuBar)
+{
+ // Don't create the underlying menubar yet; need to recreate
+ // it every time the child is activated.
+ m_frameMenuBar = menuBar;
+
+ // We make the assumption that if you're setting the menubar,
+ // this is the currently active child.
+ GetMDIParentFrame()->SetChildMenuBar(this);
+}
+
+// Set icon
+void wxMDIChildFrame::SetIcon(const wxIcon& icon)
+{
+ m_icons = wxIconBundle( icon );
+
+ if (icon.Ok())
{
- m_frameMenuBar = NULL;
- return;
+ // Not appropriate since there are no icons in
+ // a tabbed window
+ }
+}
+
+void wxMDIChildFrame::SetIcons(const wxIconBundle& icons)
+{
+ m_icons = icons;
+}
+
+void wxMDIChildFrame::SetTitle(const wxString& title)
+{
+ wxTopLevelWindow::SetTitle( title );
+ wxMDIClientWindow* clientWindow = GetMDIParentFrame()->GetClientWindow();
+
+ // Remove page if still there
+ {
+ int i = clientWindow->FindPage(this);
+
+ if (i != -1)
+ clientWindow->SetPageText(i, title);
}
-
- if (menu_bar->m_menuBarFrame)
- return;
- m_frameMenuBar = menu_bar;
}
// MDI operations
// TODO
}
+void wxMDIChildFrame::Iconize(bool WXUNUSED(iconize))
+{
+ // TODO
+}
+
+bool wxMDIChildFrame::IsIconized() const
+{
+ return false;
+}
+
+// Is it maximized? Always maximized under Motif, using the
+// tabbed MDI implementation.
+bool wxMDIChildFrame::IsMaximized(void) const
+{
+ return true;
+}
+
void wxMDIChildFrame::Restore()
{
// TODO
// TODO
}
+void wxMDIChildFrame::CaptureMouse()
+{
+ wxWindow::CaptureMouse();
+}
+
+void wxMDIChildFrame::ReleaseMouse()
+{
+ wxWindow::ReleaseMouse();
+}
+
+void wxMDIChildFrame::Raise()
+{
+ wxWindow::Raise();
+}
+
+void wxMDIChildFrame::Lower(void)
+{
+ wxWindow::Raise();
+}
+
+void wxMDIChildFrame::DoSetSizeHints(int WXUNUSED(minW), int WXUNUSED(minH), int WXUNUSED(maxW), int WXUNUSED(maxH), int WXUNUSED(incW), int WXUNUSED(incH))
+{
+}
+
// Client window
wxMDIClientWindow::wxMDIClientWindow()
wxMDIClientWindow::~wxMDIClientWindow()
{
+ // By the time this destructor is called, the child frames will have been
+ // deleted and removed from the notebook/client window.
+ DestroyChildren();
+
+ m_mainWidget = (WXWidget) 0;
}
bool wxMDIClientWindow::CreateClient(wxMDIParentFrame *parent, long style)
{
- // TODO create client window
- m_backgroundColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE);
+ SetWindowStyleFlag(style);
+
+ bool success = wxNotebook::Create(parent, wxID_NOTEBOOK_CLIENT_AREA, wxPoint(0, 0), wxSize(100, 100), 0);
+ if (success)
+ {
+ return true;
+ }
+ else
+ return false;
+}
+
+int wxMDIClientWindow::FindPage(const wxNotebookPage* page)
+{
+ for (int i = GetPageCount() - 1; i >= 0; --i)
+ {
+ if (GetPage(i) == page)
+ return i;
+ }
+
+ return -1;
+}
+
+void wxMDIClientWindow::DoSetSize(int x, int y, int width, int height, int sizeFlags)
+{
+ wxWindow::DoSetSize(x, y, width, height, sizeFlags);
+}
+
+void wxMDIClientWindow::DoSetClientSize(int width, int height)
+{
+ wxWindow::DoSetClientSize(width, height);
+}
- return FALSE;
+void wxMDIClientWindow::DoGetClientSize(int *width, int *height) const
+{
+ wxWindow::DoGetClientSize(width, height);
+}
+
+void wxMDIClientWindow::DoGetSize(int *width, int *height) const
+{
+ wxWindow::DoGetSize(width, height);
+}
+
+void wxMDIClientWindow::DoGetPosition(int *x, int *y) const
+{
+ wxWindow::DoGetPosition(x, y);
}
-// Explicitly call default scroll behaviour
void wxMDIClientWindow::OnScroll(wxScrollEvent& event)
{
- Default(); // Default processing
+ // Default(); // Default processing: OBSOLETE FUNCTION
+ event.Skip();
}
+void wxMDIClientWindow::OnPageChanged(wxNotebookEvent& event)
+{
+ // Notify child that it has been activated
+ if (event.GetOldSelection() != -1)
+ {
+ wxMDIChildFrame* oldChild = (wxMDIChildFrame*) GetPage(event.GetOldSelection());
+ if (oldChild)
+ {
+ wxActivateEvent event(wxEVT_ACTIVATE, false, oldChild->GetId());
+ event.SetEventObject( oldChild );
+ oldChild->GetEventHandler()->ProcessEvent(event);
+ }
+ }
+ if (event.GetSelection() != -1)
+ {
+ wxMDIChildFrame* activeChild = (wxMDIChildFrame*) GetPage(event.GetSelection());
+ if (activeChild)
+ {
+ wxActivateEvent event(wxEVT_ACTIVATE, true, activeChild->GetId());
+ event.SetEventObject( activeChild );
+ activeChild->GetEventHandler()->ProcessEvent(event);
+
+ if (activeChild->GetMDIParentFrame())
+ {
+ activeChild->GetMDIParentFrame()->SetActiveChild(activeChild);
+ activeChild->GetMDIParentFrame()->SetChildMenuBar(activeChild);
+ }
+ }
+ }
+ event.Skip();
+}
projects / wxWidgets.git / blobdiff