namespace Text
{
-EventData::EventData( DecoratorPtr decorator )
+EventData::EventData( DecoratorPtr decorator, InputMethodContext& inputMethodContext )
: mDecorator( decorator ),
- mImfManager(),
- mPlaceholderText(),
+ mInputMethodContext( inputMethodContext ),
+ mPlaceholderFont( NULL ),
mPlaceholderTextActive(),
mPlaceholderTextInactive(),
- mPlaceholderTextColor( 0.8f, 0.8f, 0.8f, 0.8f ),
+ mPlaceholderTextColor( 0.8f, 0.8f, 0.8f, 0.8f ), // This color has been published in the Public API (placeholder-properties.h).
mEventQueue(),
mInputStyleChangedQueue(),
mPreviousState( INACTIVE ),
mScrollAfterDelete( false ),
mAllTextSelected( false ),
mUpdateInputStyle( false ),
- mPasswordInput( false )
+ mPasswordInput( false ),
+ mCheckScrollAmount( false ),
+ mIsPlaceholderPixelSize( false ),
+ mIsPlaceholderElideEnabled( false ),
+ mPlaceholderEllipsisFlag( false ),
+ mShiftSelectionFlag( true )
{
- mImfManager = ImfManager::Get();
}
EventData::~EventData()
if( mEventData->mUpdateCursorPosition ||
mEventData->mUpdateHighlightBox )
{
- NotifyImfManager();
+ NotifyInputMethodContext();
}
// The cursor must also be repositioned after inserts into the model
return decoratorUpdated;
}
-void Controller::Impl::NotifyImfManager()
+void Controller::Impl::NotifyInputMethodContext()
{
- if( mEventData && mEventData->mImfManager )
+ if( mEventData && mEventData->mInputMethodContext )
{
CharacterIndex cursorPosition = GetLogicalCursorPosition();
cursorPosition -= numberOfWhiteSpaces;
}
- mEventData->mImfManager.SetCursorPosition( cursorPosition );
- mEventData->mImfManager.NotifyCursorPosition();
+ mEventData->mInputMethodContext.SetCursorPosition( cursorPosition );
+ mEventData->mInputMethodContext.NotifyCursorPosition();
}
}
-void Controller::Impl::NotifyImfMultiLineStatus()
+void Controller::Impl::NotifyInputMethodContextMultiLineStatus()
{
- if ( mEventData )
+ if ( mEventData && mEventData->mInputMethodContext )
{
Text::Layout::Engine::Type layout = mLayoutEngine.GetLayout();
- mEventData->mImfManager.NotifyTextInputMultiLine( layout == Text::Layout::Engine::MULTI_LINE_BOX );
+ mEventData->mInputMethodContext.NotifyTextInputMultiLine( layout == Text::Layout::Engine::MULTI_LINE_BOX );
}
}
Length paragraphCharacters = 0u;
CalculateTextUpdateIndices( paragraphCharacters );
+
+ // Check whether the indices for updating the text is valid
+ if ( numberOfCharacters > 0u &&
+ ( mTextUpdateInfo.mParagraphCharacterIndex >= numberOfCharacters ||
+ mTextUpdateInfo.mRequestedNumberOfCharacters > numberOfCharacters ) )
+ {
+ std::string currentText;
+ Utf32ToUtf8( mModel->mLogicalModel->mText.Begin(), numberOfCharacters, currentText );
+
+ DALI_LOG_ERROR( "Controller::Impl::UpdateModel: mTextUpdateInfo has invalid indices\n" );
+ DALI_LOG_ERROR( "Number of characters: %d, current text is: %s\n", numberOfCharacters, currentText.c_str() );
+
+ // Dump mTextUpdateInfo
+ DALI_LOG_ERROR( "Dump mTextUpdateInfo:\n" );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mCharacterIndex = %u\n", mTextUpdateInfo.mCharacterIndex );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mNumberOfCharactersToRemove = %u\n", mTextUpdateInfo.mNumberOfCharactersToRemove );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mNumberOfCharactersToAdd = %u\n", mTextUpdateInfo.mNumberOfCharactersToAdd );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mPreviousNumberOfCharacters = %u\n", mTextUpdateInfo.mPreviousNumberOfCharacters );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mParagraphCharacterIndex = %u\n", mTextUpdateInfo.mParagraphCharacterIndex );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mRequestedNumberOfCharacters = %u\n", mTextUpdateInfo.mRequestedNumberOfCharacters );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mStartGlyphIndex = %u\n", mTextUpdateInfo.mStartGlyphIndex );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mStartLineIndex = %u\n", mTextUpdateInfo.mStartLineIndex );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mEstimatedNumberOfLines = %u\n", mTextUpdateInfo.mEstimatedNumberOfLines );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mClearAll = %d\n", mTextUpdateInfo.mClearAll );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mFullRelayoutNeeded = %d\n", mTextUpdateInfo.mFullRelayoutNeeded );
+ DALI_LOG_ERROR( " mTextUpdateInfo.mIsLastCharacterNewParagraph = %d\n", mTextUpdateInfo.mIsLastCharacterNewParagraph );
+
+ return false;
+ }
+
startIndex = mTextUpdateInfo.mParagraphCharacterIndex;
if( mTextUpdateInfo.mClearAll ||
// Get the default font's description.
TextAbstraction::FontDescription defaultFontDescription;
TextAbstraction::PointSize26Dot6 defaultPointSize = TextAbstraction::FontClient::DEFAULT_POINT_SIZE;
- if( NULL != mFontDefaults )
+
+ if( IsShowingPlaceholderText() && mEventData && ( NULL != mEventData->mPlaceholderFont ) )
{
+ // If the placeholder font is set specifically, only placeholder font is changed.
+ defaultFontDescription = mEventData->mPlaceholderFont->mFontDescription;
+ if( mEventData->mPlaceholderFont->sizeDefined )
+ {
+ defaultPointSize = mEventData->mPlaceholderFont->mDefaultPointSize * 64u;
+ }
+ }
+ else if( NULL != mFontDefaults )
+ {
+ // Set the normal font and the placeholder font.
defaultFontDescription = mFontDefaults->mFontDescription;
- defaultPointSize = mFontDefaults->mDefaultPointSize * 64u;
+
+ if( mTextFitEnabled )
+ {
+ defaultPointSize = mFontDefaults->mFitPointSize * 64u;
+ }
+ else
+ {
+ defaultPointSize = mFontDefaults->mDefaultPointSize * 64u;
+ }
}
// Validates the fonts. If there is a character with no assigned font it sets a default one.
lineBreakInfo,
startIndex,
requestedNumberOfCharacters,
- bidirectionalInfo );
+ bidirectionalInfo,
+ mModel->mMatchSystemLanguageDirection,
+ mLayoutDirection );
if( 0u != bidirectionalInfo.Count() )
{
void Controller::Impl::OnCursorKeyEvent( const Event& event )
{
- if( NULL == mEventData )
+ if( NULL == mEventData || !IsShowingRealText() )
{
// Nothing to do if there is no text input.
return;
}
int keyCode = event.p1.mInt;
+ bool isShiftModifier = event.p2.mBool;
+
+ CharacterIndex previousPrimaryCursorPosition = mEventData->mPrimaryCursorPosition;
if( Dali::DALI_KEY_CURSOR_LEFT == keyCode )
{
if( mEventData->mPrimaryCursorPosition > 0u )
{
- mEventData->mPrimaryCursorPosition = CalculateNewCursorIndex( mEventData->mPrimaryCursorPosition - 1u );
+ if ( !isShiftModifier && mEventData->mDecorator->IsHighlightVisible() )
+ {
+ mEventData->mPrimaryCursorPosition = std::min(mEventData->mLeftSelectionPosition, mEventData->mRightSelectionPosition);
+ }
+ else
+ {
+ mEventData->mPrimaryCursorPosition = CalculateNewCursorIndex( mEventData->mPrimaryCursorPosition - 1u );
+ }
}
}
else if( Dali::DALI_KEY_CURSOR_RIGHT == keyCode )
{
if( mModel->mLogicalModel->mText.Count() > mEventData->mPrimaryCursorPosition )
{
- mEventData->mPrimaryCursorPosition = CalculateNewCursorIndex( mEventData->mPrimaryCursorPosition );
+ if ( !isShiftModifier && mEventData->mDecorator->IsHighlightVisible() )
+ {
+ mEventData->mPrimaryCursorPosition = std::max(mEventData->mLeftSelectionPosition, mEventData->mRightSelectionPosition);
+ }
+ else
+ {
+ mEventData->mPrimaryCursorPosition = CalculateNewCursorIndex( mEventData->mPrimaryCursorPosition );
+ }
}
}
- else if( Dali::DALI_KEY_CURSOR_UP == keyCode )
+ else if( Dali::DALI_KEY_CURSOR_UP == keyCode && !isShiftModifier )
{
+ // Ignore Shift-Up for text selection for now.
+
// Get first the line index of the current cursor position index.
CharacterIndex characterIndex = 0u;
CharacterHitTest::TAP,
matchedCharacter );
}
- else if( Dali::DALI_KEY_CURSOR_DOWN == keyCode )
+ else if( Dali::DALI_KEY_CURSOR_DOWN == keyCode && !isShiftModifier )
{
+ // Ignore Shift-Down for text selection for now.
+
// Get first the line index of the current cursor position index.
CharacterIndex characterIndex = 0u;
}
}
- mEventData->mUpdateCursorPosition = true;
+ if ( !isShiftModifier && mEventData->mState != EventData::SELECTING )
+ {
+ // Update selection position after moving the cursor
+ mEventData->mLeftSelectionPosition = mEventData->mPrimaryCursorPosition;
+ mEventData->mRightSelectionPosition = mEventData->mPrimaryCursorPosition;
+ }
+
+ if ( isShiftModifier && IsShowingRealText() && mEventData->mShiftSelectionFlag )
+ {
+ // Handle text selection
+ bool selecting = false;
+
+ if ( Dali::DALI_KEY_CURSOR_LEFT == keyCode || Dali::DALI_KEY_CURSOR_RIGHT == keyCode )
+ {
+ // Shift-Left/Right to select the text
+ int cursorPositionDelta = mEventData->mPrimaryCursorPosition - previousPrimaryCursorPosition;
+ if ( cursorPositionDelta > 0 || mEventData->mRightSelectionPosition > 0u ) // Check the boundary
+ {
+ mEventData->mRightSelectionPosition += cursorPositionDelta;
+ }
+ selecting = true;
+ }
+ else if ( mEventData->mLeftSelectionPosition != mEventData->mRightSelectionPosition )
+ {
+ // Show no grab handles and text highlight if Shift-Up/Down pressed but no selected text
+ selecting = true;
+ }
+
+ if ( selecting )
+ {
+ // Notify the cursor position to the InputMethodContext.
+ if( mEventData->mInputMethodContext )
+ {
+ mEventData->mInputMethodContext.SetCursorPosition( mEventData->mPrimaryCursorPosition );
+ mEventData->mInputMethodContext.NotifyCursorPosition();
+ }
+
+ ChangeState( EventData::SELECTING );
+
+ mEventData->mUpdateLeftSelectionPosition = true;
+ mEventData->mUpdateRightSelectionPosition = true;
+ mEventData->mUpdateGrabHandlePosition = true;
+ mEventData->mUpdateHighlightBox = true;
+
+ // Hide the text selection popup if select the text using keyboard instead of moving grab handles
+ if( mEventData->mGrabHandlePopupEnabled )
+ {
+ mEventData->mDecorator->SetPopupActive( false );
+ }
+ }
+ }
+ else
+ {
+ // Handle normal cursor move
+ ChangeState( EventData::EDITING );
+ mEventData->mUpdateCursorPosition = true;
+ }
+
mEventData->mUpdateInputStyle = true;
mEventData->mScrollAfterUpdatePosition = true;
}
mEventData->mPrimaryCursorPosition = 0u;
}
+ // Update selection position after tapping
+ mEventData->mLeftSelectionPosition = mEventData->mPrimaryCursorPosition;
+ mEventData->mRightSelectionPosition = mEventData->mPrimaryCursorPosition;
+
mEventData->mUpdateCursorPosition = true;
mEventData->mUpdateGrabHandlePosition = true;
mEventData->mScrollAfterUpdatePosition = true;
mEventData->mUpdateInputStyle = true;
- // Notify the cursor position to the imf manager.
- if( mEventData->mImfManager )
+ // Notify the cursor position to the InputMethodContext.
+ if( mEventData->mInputMethodContext )
{
- mEventData->mImfManager.SetCursorPosition( mEventData->mPrimaryCursorPosition );
- mEventData->mImfManager.NotifyCursorPosition();
+ mEventData->mInputMethodContext.SetCursorPosition( mEventData->mPrimaryCursorPosition );
+ mEventData->mInputMethodContext.NotifyCursorPosition();
}
}
else if( 2u == tapCount )
if( mEventData->mSelectionEnabled )
{
- ChangeState( EventData::SELECTING );
+ // Calculates the logical position from the start.
+ RepositionSelectionHandles( 0.f - mModel->mScrollPosition.x,
+ 0.f - mModel->mScrollPosition.y,
+ Controller::NoTextTap::HIGHLIGHT );
mEventData->mLeftSelectionPosition = 0u;
mEventData->mRightSelectionPosition = mModel->mLogicalModel->mText.Count();
-
- mEventData->mScrollAfterUpdatePosition = true;
- mEventData->mUpdateLeftSelectionPosition = true;
- mEventData->mUpdateRightSelectionPosition = true;
- mEventData->mUpdateHighlightBox = true;
}
}
mModel->mLogicalModel->UpdateTextStyleRuns( startOfSelectedText, -static_cast<int>( lengthOfSelectedText ) );
// Mark the paragraphs to be updated.
- mTextUpdateInfo.mCharacterIndex = startOfSelectedText;
- mTextUpdateInfo.mNumberOfCharactersToRemove = lengthOfSelectedText;
+ if( Layout::Engine::SINGLE_LINE_BOX == mLayoutEngine.GetLayout() )
+ {
+ mTextUpdateInfo.mCharacterIndex = 0;
+ mTextUpdateInfo.mNumberOfCharactersToRemove = mTextUpdateInfo.mPreviousNumberOfCharacters;
+ mTextUpdateInfo.mNumberOfCharactersToAdd = mTextUpdateInfo.mPreviousNumberOfCharacters - lengthOfSelectedText;
+ mTextUpdateInfo.mClearAll = true;
+ }
+ else
+ {
+ mTextUpdateInfo.mCharacterIndex = startOfSelectedText;
+ mTextUpdateInfo.mNumberOfCharactersToRemove = lengthOfSelectedText;
+ }
// Delete text between handles
Vector<Character>::Iterator first = utf32Characters.Begin() + startOfSelectedText;
if( selectionStart == selectionEnd )
{
// Nothing to select if handles are in the same place.
+ // So, deactive Highlight box.
+ mEventData->mDecorator->SetHighlightActive( false );
return;
}
const SelectionBoxInfo& firstSelectionBoxLineInfo = *( selectionBoxLinesInfo.Begin() );
highLightPosition.y = firstSelectionBoxLineInfo.lineOffset;
- mEventData->mDecorator->SetHighLightBox( highLightPosition, highLightSize );
+ mEventData->mDecorator->SetHighLightBox( highLightPosition, highLightSize, static_cast<float>( mModel->GetOutlineWidth() ) );
if( !mEventData->mDecorator->IsSmoothHandlePanEnabled() )
{
secondaryCursorInfo.lineHeight );
}
- // Cursor to be positioned at end of selection so if selection interrupted and edit mode restarted the cursor will be at end of selection
- mEventData->mPrimaryCursorPosition = ( indicesSwapped ) ? mEventData->mLeftSelectionPosition : mEventData->mRightSelectionPosition;
-
// Set the flag to update the decorator.
mEventData->mDecoratorUpdated = true;
}
mEventData->mUpdateRightSelectionPosition = true;
mEventData->mUpdateHighlightBox = true;
- // It may happen an IMF commit event arrives before the selection event
- // if the IMF manager is in pre-edit state. The commit event will set the
+ // It may happen an InputMethodContext commit event arrives before the selection event
+ // if the InputMethodContext is in pre-edit state. The commit event will set the
// mEventData->mUpdateCursorPosition flag to true. If it's not set back
// to false, the highlight box won't be updated.
mEventData->mUpdateCursorPosition = false;
mEventData->mScrollAfterUpdatePosition = ( mEventData->mLeftSelectionPosition != mEventData->mRightSelectionPosition );
+
+ // Cursor to be positioned at end of selection so if selection interrupted and edit mode restarted the cursor will be at end of selection
+ mEventData->mPrimaryCursorPosition = std::max( mEventData->mLeftSelectionPosition, mEventData->mRightSelectionPosition );
}
else if( Controller::NoTextTap::SHOW_SELECTION_POPUP == action )
{
mEventData->mDecorator->SetActiveCursor( ACTIVE_CURSOR_NONE );
mEventData->mDecorator->StopCursorBlink();
mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, false );
- mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, true );
- mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, true );
+ if ( mEventData->mGrabHandleEnabled )
+ {
+ mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, true );
+ mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, true );
+ }
mEventData->mDecorator->SetHighlightActive( true );
if( mEventData->mGrabHandlePopupEnabled )
{
mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, false );
mEventData->mDecorator->SetHighlightActive( false );
}
- else
+ else if ( mEventData->mGrabHandleEnabled )
{
mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, true );
}
mEventData->mDecorator->StartCursorBlink();
}
// Grab handle is not shown until a tap is received whilst EDITING
- mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, true );
+ if ( mEventData->mGrabHandleEnabled )
+ {
+ mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, true );
+ }
mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, false );
mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, false );
mEventData->mDecorator->SetHighlightActive( false );
mEventData->mDecorator->SetActiveCursor( ACTIVE_CURSOR_NONE );
mEventData->mDecorator->StopCursorBlink();
mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, false );
- mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, true );
- mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, true );
+ if ( mEventData->mGrabHandleEnabled )
+ {
+ mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, true );
+ mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, true );
+ }
mEventData->mDecorator->SetHighlightActive( true );
if( mEventData->mGrabHandlePopupEnabled )
{
{
mEventData->mDecorator->StartCursorBlink();
}
- mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, true );
+ if ( mEventData->mGrabHandleEnabled )
+ {
+ mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, true );
+ }
mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, false );
mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, false );
mEventData->mDecorator->SetHighlightActive( false );
mEventData->mDecorator->StartCursorBlink();
}
- mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, true );
+ if ( mEventData->mGrabHandleEnabled )
+ {
+ mEventData->mDecorator->SetHandleActive( GRAB_HANDLE, true );
+ }
mEventData->mDecorator->SetHandleActive( LEFT_SELECTION_HANDLE, false );
mEventData->mDecorator->SetHandleActive( RIGHT_SELECTION_HANDLE, false );
mEventData->mDecorator->SetHighlightActive( false );
cursorInfo.lineHeight = GetDefaultFontLineHeight();
cursorInfo.primaryCursorHeight = cursorInfo.lineHeight;
+ bool isRTL = false;
+ if( mModel->mMatchSystemLanguageDirection )
+ {
+ isRTL = mLayoutDirection == LayoutDirection::RIGHT_TO_LEFT;
+ }
+
switch( mModel->mHorizontalAlignment )
{
- case Layout::HORIZONTAL_ALIGN_BEGIN:
+ case Text::HorizontalAlignment::BEGIN :
{
- cursorInfo.primaryPosition.x = 0.f;
+ if( isRTL )
+ {
+ cursorInfo.primaryPosition.x = mModel->mVisualModel->mControlSize.width - mEventData->mDecorator->GetCursorWidth();
+ }
+ else
+ {
+ cursorInfo.primaryPosition.x = 0.f;
+ }
break;
}
- case Layout::HORIZONTAL_ALIGN_CENTER:
+ case Text::HorizontalAlignment::CENTER:
{
cursorInfo.primaryPosition.x = floorf( 0.5f * mModel->mVisualModel->mControlSize.width );
break;
}
- case Layout::HORIZONTAL_ALIGN_END:
+ case Text::HorizontalAlignment::END:
{
- cursorInfo.primaryPosition.x = mModel->mVisualModel->mControlSize.width - mEventData->mDecorator->GetCursorWidth();
+ if( isRTL )
+ {
+ cursorInfo.primaryPosition.x = 0.f;
+ }
+ else
+ {
+ cursorInfo.primaryPosition.x = mModel->mVisualModel->mControlSize.width - mEventData->mDecorator->GetCursorWidth();
+ }
break;
}
}
return;
}
- Text::GetCursorPosition( mModel->mVisualModel,
- mModel->mLogicalModel,
- mMetrics,
- logical,
+ const bool isMultiLine = ( Layout::Engine::MULTI_LINE_BOX == mLayoutEngine.GetLayout() );
+ GetCursorPositionParameters parameters;
+ parameters.visualModel = mModel->mVisualModel;
+ parameters.logicalModel = mModel->mLogicalModel;
+ parameters.metrics = mMetrics;
+ parameters.logical = logical;
+ parameters.isMultiline = isMultiLine;
+
+ Text::GetCursorPosition( parameters,
cursorInfo );
- if( Layout::Engine::MULTI_LINE_BOX == mLayoutEngine.GetLayout() )
+ // Adds Outline offset.
+ const float outlineWidth = static_cast<float>( mModel->GetOutlineWidth() );
+ cursorInfo.primaryPosition.x += outlineWidth;
+ cursorInfo.primaryPosition.y += outlineWidth;
+ cursorInfo.secondaryPosition.x += outlineWidth;
+ cursorInfo.secondaryPosition.y += outlineWidth;
+
+ if( isMultiLine )
{
// If the text is editable and multi-line, the cursor position after a white space shouldn't exceed the boundaries of the text control.
mModel->mScrollPosition.x = mModel->mVisualModel->mControlSize.width - positionEndX;
}
- if( decoratorPositionBeginY < 0.f )
- {
- mModel->mScrollPosition.y = -position.y;
- }
- else if( decoratorPositionEndY > mModel->mVisualModel->mControlSize.height )
+ if( Layout::Engine::MULTI_LINE_BOX == mLayoutEngine.GetLayout() )
{
- mModel->mScrollPosition.y = mModel->mVisualModel->mControlSize.height - positionEndY;
+ if( decoratorPositionBeginY < 0.f )
+ {
+ mModel->mScrollPosition.y = -position.y;
+ }
+ else if( decoratorPositionEndY > mModel->mVisualModel->mControlSize.height )
+ {
+ mModel->mScrollPosition.y = mModel->mVisualModel->mControlSize.height - positionEndY;
+ }
}
}
projects / platform / core / uifw / dali-toolkit.git / blobdiff