bool CSSMutableStyleDeclaration::setProperty(int propertyID, const String& value, bool important, bool notifyChanged, ExceptionCode& ec)
{
    ec = 0;

    // Setting the value to an empty string just removes the property in both IE and Gecko.
    // Setting it to null seems to produce less consistent results, but we treat it just the same.
    if (value.isEmpty()) {
        removeProperty(propertyID, notifyChanged, false, ec);
        return ec == 0;
    }

    // When replacing an existing property value, this moves the property to the end of the list.
    // Firefox preserves the position, and MSIE moves the property to the beginning.
    CSSParser parser(useStrictParsing());
    bool success = parser.parseValue(this, propertyID, value, important);
    if (!success) {
        // CSS DOM requires raising SYNTAX_ERR here, but this is too dangerous for compatibility,
        // see <http://bugs.webkit.org/show_bug.cgi?id=7296>.
    } else if (notifyChanged)
        setChanged();
    ASSERT(!ec);
    return success;
}

    //_______________________________________________________
    void ExceptionListWidget::edit( void )
    {

        // retrieve selection
        QModelIndex current( m_ui.exceptionListView->selectionModel()->currentIndex() );
        if( ! model().contains( current ) ) return;

        InternalSettingsPtr exception( model().get( current ) );

        // create dialog
        QPointer<ExceptionDialog> dialog( new ExceptionDialog( this ) );
        dialog->setWindowTitle( i18n( "Edit Exception - Menda Settings" ) );
        dialog->setException( exception );

        // map dialog
        if( !dialog->exec() )
        {
            delete dialog;
            return;
        }

        // check modifications
        if( !dialog->isChanged() ) return;

        // retrieve exception
        dialog->save();
        delete dialog;

        // check new exception validity
        checkException( exception );
        resizeColumns();

        setChanged( true );

        return;

    }

DECLARE_EXPORT void Buffer::setMaximumCalendar(CalendarDefault *cal)
{
  // Resetting the same calendar
  if (max_cal == cal) return;

  // Mark as changed
  setChanged();

  // Delete previous events.
  for (flowplanlist::iterator oo=flowplans.begin(); oo!=flowplans.end(); )
    if (oo->getType() == 4)
    {
      flowplans.erase(&(*oo));
      delete &(*(oo++));
    }
    else ++oo;

  // Null pointer passed. Change back to time independent max.
  if (!cal)
  {
    setMaximum(max_val);
    return;
  }

  // Create timeline structures for every bucket. A new entry is created only
  // when the value changes.
  max_cal = const_cast<CalendarDefault*>(cal);
  double curMax = 0.0;
  for (CalendarDefault::EventIterator x(max_cal); x.getDate()<Date::infiniteFuture; ++x)
    if (curMax != x.getValue())
    {
      curMax = x.getValue();
      flowplanlist::EventMaxQuantity *newBucket =
        new flowplanlist::EventMaxQuantity(x.getDate(), &flowplans, curMax);
      flowplans.insert(newBucket);
    }
}

    //_______________________________________________________
    void ExceptionListWidget::add( void )
    {

        QPointer<ExceptionDialog> dialog = new ExceptionDialog( this );
        ConfigurationPtr exception( new Configuration() );
        exception->readConfig();
        dialog->setException( exception );

        // run dialog and check existence
        if( !dialog->exec() )
        {
            delete dialog;
            return;
        }

        dialog->save();
        delete dialog;

        // check exceptions
        if( !checkException( exception ) ) return;

        // create new item
        model().add( exception );
        setChanged( true );

        // make sure item is selected
        QModelIndex index( model().index( exception ) );
        if( index != ui.exceptionListView->selectionModel()->currentIndex() )
        {
            ui.exceptionListView->selectionModel()->select( index,  QItemSelectionModel::Clear|QItemSelectionModel::Select|QItemSelectionModel::Rows );
            ui.exceptionListView->selectionModel()->setCurrentIndex( index,  QItemSelectionModel::Current|QItemSelectionModel::Rows );
        }

        resizeColumns();
        return;

    }

DECLARE_EXPORT void Resource::setMaximumCalendar(CalendarDefault* c)
{
  // Resetting the same calendar
  if (size_max_cal == c) return;

  // Mark as changed
  setChanged();

  // Remove the current max events.
  for (loadplanlist::iterator oo=loadplans.begin(); oo!=loadplans.end(); )
    if (oo->getType() == 4)
    {
      loadplans.erase(&(*oo));
      delete &(*(oo++));
    }
    else ++oo;

  // Null pointer passed. Change back to time independent maximum size.
  if (!c)
  {
    setMaximum(size_max);
    return;
  }

  // Create timeline structures for every bucket.
  size_max_cal = c;
  double curMax = 0.0;
  for (CalendarDefault::EventIterator x(size_max_cal); x.getDate()<Date::infiniteFuture; ++x)
    if (curMax != x.getValue())
    {
      curMax = x.getValue();
      loadplanlist::EventMaxQuantity *newBucket =
        new loadplanlist::EventMaxQuantity(x.getDate(), &loadplans, curMax);
      loadplans.insert(newBucket);
    }
}

    //_______________________________________________
    void ConfigWidget::updateChanged( void )
    {

        // check configuration
        if( !m_internalSettings ) return;

        // track modifications
        bool modified( false );

        if( m_ui.titleAlignment->currentIndex() != m_internalSettings->titleAlignment() ) modified = true;
        else if( m_ui.buttonSize->currentIndex() != m_internalSettings->buttonSize() ) modified = true;
        else if( m_ui.drawBorderOnMaximizedWindows->isChecked() !=  m_internalSettings->drawBorderOnMaximizedWindows() ) modified = true;
        else if( m_ui.drawSizeGrip->isChecked() !=  m_internalSettings->drawSizeGrip() ) modified = true;

        // exceptions
        else if( m_ui.exceptions->isChanged() ) modified = true;

        // animations
        else if( m_ui.animationsEnabled->isChecked() !=  m_internalSettings->animationsEnabled() ) modified = true;
        else if( m_ui.animationsDuration->value() != m_internalSettings->animationsDuration() ) modified = true;

        setChanged( modified );

    }

    //_______________________________________________
    void ConfigWidget::updateChanged( void )
    {

        // check configuration
        if( !_configuration ) return;

        // track modifications
        bool modified( false );

        if( ui.titleAlignment->currentIndex() != _configuration->titleAlignment() ) modified = true;
        else if( ui.buttonSize->currentIndex() != _configuration->buttonSize() ) modified = true;
        else if( ui.frameBorder->currentIndex() != _configuration->frameBorder() ) modified = true;
        else if( ui.separatorMode->currentIndex() != _configuration->separatorMode() ) modified = true;
        else if( ui.drawSizeGrip->isChecked() != _configuration->drawSizeGrip() ) modified = true;
        else if( ui.titleOutline->isChecked() !=  _configuration->drawTitleOutline() ) modified = true;
        else if( ui.narrowButtonSpacing->isChecked() !=  _configuration->useNarrowButtonSpacing() ) modified = true;
        else if( ui.closeFromMenuButton->isChecked() != _configuration->closeWindowFromMenuButton() ) modified = true;

        // transparency
        else if( ui.opacityFromStyle->isChecked() != _configuration->opacityFromStyle() ) modified = true;
        else if( ui.backgroundOpacity->value() != _configuration->backgroundOpacity() ) modified = true;

        // exceptions
        else if( ui.exceptions->isChanged() ) modified = true;

        // shadow configurations
        else if( shadowConfigurations[0]->isChanged() ) modified = true;
        else if( shadowConfigurations[1]->isChanged() ) modified = true;

        // animations
        else if( !_expertMode && ui.animationsEnabled->isChecked() !=  _configuration->animationsEnabled() ) modified = true;
        else if( _expertMode && _animationConfigWidget->isChanged() ) modified = true;

        setChanged( modified );

    }

void LayoutPropertySheet::setChanged(int index, bool changed)
{
    const LayoutPropertyType type = layoutPropertyType(propertyName(index));
    switch (type) {
    case LayoutPropertySpacing:
        if (LayoutProperties::visibleProperties(m_layout) & LayoutProperties::HorizSpacingProperty) {
            setChanged(indexOf(QLatin1String(horizontalSpacing)), changed);
            setChanged(indexOf(QLatin1String(verticalSpacing)), changed);
        }
        break;
    case LayoutPropertyMargin:
        setChanged(indexOf(QLatin1String(leftMargin)), changed);
        setChanged(indexOf(QLatin1String(topMargin)), changed);
        setChanged(indexOf(QLatin1String(rightMargin)), changed);
        setChanged(indexOf(QLatin1String(bottomMargin)), changed);
        break;
    default:
        break;
    }
    QDesignerPropertySheet::setChanged(index, changed);
}

 //__________________________________________________________
 InternalSettingsList ExceptionListWidget::exceptions( void )
 {
     return model().get();
     setChanged( false );
 }

/**
 * @brief TvShowEpisode::setThumbnailImage
 * @param thumbnail
 */
void TvShowEpisode::setThumbnailImage(QByteArray thumbnail)
{
    m_thumbnailImage = thumbnail;
    m_thumbnailImageChanged = true;
    setChanged(true);
}

void CSSMutableStyleDeclaration::setImageProperty(int propertyId, const String& url, bool important)
{
    removeProperty(propertyId);
    m_values.append(CSSProperty(propertyId, CSSImageValue::create(url), important));
    setChanged();
}

void rice::p2p::multiring::MultiringNodeHandle::update(::java::util::Observable* o, ::java::lang::Object* obj)
{
    setChanged();
    notifyObservers(obj);
}

 void InputMethod::update()
 {
     setChanged(false);
 }

	void clear() { freeLayouts(); m_blocks.clear(); setChanged(true); }

void SharpnessFilter::somethingChanged(){
    setChanged(true);
}

void DPArrow::dataChanged()
{
	DPLine::dataChanged();
	m_headAngle = dataDouble( "HeadAngle" );
	setChanged();
}

void WPdfImage::drawText(const WRectF& rect, 
			 WFlags<AlignmentFlag> flags,
			 TextFlag textFlag,
			 const WString& text,
			 const WPointF *clipPoint)
{
  // FIXME: textFlag
  
  if (clipPoint && painter() && !painter()->clipPath().isEmpty()) {
    if (!painter()->clipPathTransform().map(painter()->clipPath())
	  .isPointInPath(painter()->worldTransform().map(*clipPoint)))
      return;
  }

  if (trueTypeFont_ && !trueTypeFonts_->busy())
    trueTypeFonts_->drawText(painter()->font(), rect, flags, text);
  else {
    HPDF_REAL left, top, right, bottom;
    HPDF_TextAlignment alignment = HPDF_TALIGN_LEFT;

    AlignmentFlag horizontalAlign = flags & AlignHorizontalMask;
    AlignmentFlag verticalAlign = flags & AlignVerticalMask;

    switch (horizontalAlign) {
    default:
      // should never happen
    case AlignmentFlag::Left:
      left = rect.left();
      right = left + 10000;
      alignment = HPDF_TALIGN_LEFT;
      break;
    case AlignmentFlag::Right:
      right = rect.right();
      left = right - 10000;
      alignment = HPDF_TALIGN_RIGHT;
      break;
    case AlignmentFlag::Center:
      {
	float center = rect.center().x();
	left = center - 5000;
	right = center + 5000;
	alignment = HPDF_TALIGN_CENTER;
	break;
      }
    }

    switch (verticalAlign) {
    default:
      // fall-through ; should never happen
    case AlignmentFlag::Top:
      top = rect.top(); break;
    case AlignmentFlag::Middle:
      // FIXME: use font metrics to center middle of ascent !
      top = rect.center().y() - 0.60 * fontSize_; break;
    case AlignmentFlag::Bottom:
      top = rect.bottom() - fontSize_; break;
    }

    bottom = top + fontSize_;

    if (trueTypeFonts_->busy())
      setChanged(PainterChangeFlag::Font);

    HPDF_Page_GSave(page_);

    // Undo the global inversion
    HPDF_Page_Concat(page_, 1, 0, 0, -1, 0, bottom);

    HPDF_Page_BeginText(page_);

    // Need to fill text using pen color
    const WColor& penColor = painter()->pen().color();
    HPDF_Page_SetRGBFill(page_,
			 penColor.red() / 255.,
			 penColor.green() / 255.,
			 penColor.blue() / 255.);

    std::string s = trueTypeFont_ ? text.toUTF8() : text.narrow();

    HPDF_Page_TextRect(page_, left, fontSize_, right, 0, s.c_str(),
		       alignment, nullptr);

    HPDF_Page_EndText(page_);

    HPDF_Page_GRestore(page_);
  }
}

BOOL LLPrimitive::setVolume(const LLVolumeParams &volume_params, const S32 detail, bool unique_volume)
{
	LLMemType m1(LLMemType::MTYPE_VOLUME);
	LLVolume *volumep;
	if (unique_volume)
	{
		F32 volume_detail = LLVolumeLODGroup::getVolumeScaleFromDetail(detail);
		if (mVolumep.notNull() && volume_params == mVolumep->getParams() && (volume_detail == mVolumep->getDetail()))
		{
			return FALSE;
		}
		volumep = new LLVolume(volume_params, volume_detail, FALSE, TRUE);
	}
	else
	{
		if (mVolumep.notNull())
		{
			F32 volume_detail = LLVolumeLODGroup::getVolumeScaleFromDetail(detail);
			if (volume_params == mVolumep->getParams() && (volume_detail == mVolumep->getDetail()))
			{
				return FALSE;
			}
		}

		volumep = sVolumeManager->refVolume(volume_params, detail);
		if (volumep == mVolumep)
		{
			sVolumeManager->unrefVolume( volumep );  // LLVolumeMgr::refVolume() creates a reference, but we don't need a second one.
			return TRUE;
		}
	}

	setChanged(GEOMETRY);

	
	if (!mVolumep)
	{
		mVolumep = volumep;
		//mFaceMask = mVolumep->generateFaceMask();
		setNumTEs(mVolumep->getNumFaces());
		return TRUE;
	}
	
#if 0 
	// #if 0'd out by davep
	// this is a lot of cruft to set texture entry values that just stay the same for LOD switch 
	// or immediately get overridden by an object update message, also crashes occasionally
	U32 old_face_mask = mVolumep->mFaceMask;

	S32 face_bit = 0;
	S32 cur_mask = 0;

	// Grab copies of the old faces from the original shape, ordered by type.
	// We will use these to figure out what old texture info gets mapped to new
	// faces in the new shape.
	std::vector<LLProfile::Face> old_faces; 
	for (S32 face = 0; face < mVolumep->getNumFaces(); face++)
	{
		old_faces.push_back(mVolumep->getProfile().mFaces[face]);
	}

	// Copy the old texture info off to the side, but not in the order in which
	// they live in the mTextureList, rather in order of ther "face id" which
	// is the corresponding value of LLVolueParams::LLProfile::mFaces::mIndex.
	//
	// Hence, some elements of old_tes::mEntryList will be invalid.  It is
	// initialized to a size of 9 (max number of possible faces on a volume?)
	// and only the ones with valid types are filled in.
	LLPrimTextureList old_tes;
	old_tes.setSize(9);
	for (face_bit = 0; face_bit < 9; face_bit++)
	{
		cur_mask = 0x1 << face_bit;
		if (old_face_mask & cur_mask)
		{
			S32 te_index = face_index_from_id(cur_mask, old_faces);
			old_tes.copyTexture(face_bit, *(getTE(te_index)));
			//llinfos << face_bit << ":" << te_index << ":" << old_tes[face_bit].getID() << llendl;
		}
	}


	// build the new object
	sVolumeManager->unrefVolume(mVolumep);
	mVolumep = volumep;
	
	U32 new_face_mask = mVolumep->mFaceMask;
	S32 i;

	if (old_face_mask == new_face_mask) 
	{
		// nothing to do
		return TRUE;
	}

	if (mVolumep->getNumFaces() == 0 && new_face_mask != 0)
	{
		llwarns << "Object with 0 faces found...INCORRECT!" << llendl;
		setNumTEs(mVolumep->getNumFaces());
		return TRUE;
//.........这里部分代码省略.........

void FaceDetector::somethingChanged()
{
    setChanged(true);
}

void TypedRenderTargetCapability::resetRenderTarget(RenderTargetType type)
{
    m_renderTargets[type] = RenderTarget();
    setChanged(true);
}