/// <summary><inheritDoc/></summary>
public virtual bool IsValid(String objectString)
{
if (objectString == null)
{
return(false);
}
if (CssUtils.IsInitialOrInheritOrUnset(objectString))
{
return(true);
}
// Actually it's not shorthand but extractShorthandProperties method works exactly as needed in this case
IList <IList <String> > extractedProperties = CssUtils.ExtractShorthandProperties(objectString);
foreach (IList <String> propertyValues in extractedProperties)
{
if (propertyValues.IsEmpty() || propertyValues.Count > MAX_AMOUNT_OF_VALUES)
{
return(false);
}
for (int i = 0; i < propertyValues.Count; i++)
{
if (!IsValidProperty(propertyValues, i))
{
return(false);
}
}
}
return(true);
}
// With CSS3, you can apply multiple backgrounds to elements. These are layered atop one another
// with the first background you provide on top and the last background listed in the back. Only
// the last background can include a background color.
/* (non-Javadoc)
* @see com.itextpdf.styledxmlparser.css.resolve.shorthand.IShorthandResolver#resolveShorthand(java.lang.String)
*/
public virtual IList <CssDeclaration> ResolveShorthand(String shorthandExpression)
{
if (CssUtils.IsInitialOrInheritOrUnset(shorthandExpression))
{
return(JavaUtil.ArraysAsList(new CssDeclaration(CommonCssConstants.BACKGROUND_COLOR, shorthandExpression),
new CssDeclaration(CommonCssConstants.BACKGROUND_IMAGE, shorthandExpression), new CssDeclaration(CommonCssConstants
.BACKGROUND_POSITION, shorthandExpression), new CssDeclaration(CommonCssConstants.BACKGROUND_SIZE, shorthandExpression
), new CssDeclaration(CommonCssConstants.BACKGROUND_REPEAT, shorthandExpression), new CssDeclaration(CommonCssConstants
.BACKGROUND_ORIGIN, shorthandExpression), new CssDeclaration(CommonCssConstants.BACKGROUND_CLIP, shorthandExpression
), new CssDeclaration(CommonCssConstants.BACKGROUND_ATTACHMENT, shorthandExpression)));
}
if (String.IsNullOrEmpty(shorthandExpression.Trim()))
{
LOGGER.Error(MessageFormatUtil.Format(iText.StyledXmlParser.LogMessageConstant.SHORTHAND_PROPERTY_CANNOT_BE_EMPTY
, CommonCssConstants.BACKGROUND));
return(new List <CssDeclaration>());
}
IList <IList <String> > propsList = CssUtils.ExtractShorthandProperties(shorthandExpression);
IDictionary <CssBackgroundUtils.BackgroundPropertyType, String> resolvedProps = new Dictionary <CssBackgroundUtils.BackgroundPropertyType
, String>();
FillMapWithPropertiesTypes(resolvedProps);
foreach (IList <String> props in propsList)
{
if (!ProcessProperties(props, resolvedProps))
{
return(new List <CssDeclaration>());
}
}
if (resolvedProps.Get(CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_COLOR) == null)
{
resolvedProps.Put(CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_COLOR, CommonCssConstants.TRANSPARENT
);
}
if (!CheckProperties(resolvedProps))
{
return(new List <CssDeclaration>());
}
return(JavaUtil.ArraysAsList(new CssDeclaration(CssBackgroundUtils.GetBackgroundPropertyNameFromType(CssBackgroundUtils.BackgroundPropertyType
.BACKGROUND_COLOR), resolvedProps.Get(CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_COLOR)), new
CssDeclaration(CssBackgroundUtils.GetBackgroundPropertyNameFromType(CssBackgroundUtils.BackgroundPropertyType
.BACKGROUND_IMAGE), resolvedProps.Get(CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_IMAGE)), new
CssDeclaration(CssBackgroundUtils.GetBackgroundPropertyNameFromType(CssBackgroundUtils.BackgroundPropertyType
.BACKGROUND_POSITION), resolvedProps.Get(CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_POSITION
)), new CssDeclaration(CssBackgroundUtils.GetBackgroundPropertyNameFromType(CssBackgroundUtils.BackgroundPropertyType
.BACKGROUND_SIZE), resolvedProps.Get(CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_SIZE)), new
CssDeclaration(CssBackgroundUtils.GetBackgroundPropertyNameFromType(CssBackgroundUtils.BackgroundPropertyType
.BACKGROUND_REPEAT), resolvedProps.Get(CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_REPEAT)),
new CssDeclaration(CssBackgroundUtils.GetBackgroundPropertyNameFromType(CssBackgroundUtils.BackgroundPropertyType
.BACKGROUND_ORIGIN), resolvedProps.Get(CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_ORIGIN)),
new CssDeclaration(CssBackgroundUtils.GetBackgroundPropertyNameFromType(CssBackgroundUtils.BackgroundPropertyType
.BACKGROUND_CLIP), resolvedProps.Get(CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_CLIP)), new
CssDeclaration(CssBackgroundUtils.GetBackgroundPropertyNameFromType(CssBackgroundUtils.BackgroundPropertyType
.BACKGROUND_ATTACHMENT), resolvedProps.Get(CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_ATTACHMENT
))));
}
/// <summary><inheritDoc/></summary>
public virtual IList <CssDeclaration> ResolveShorthand(String shorthandExpression)
{
if (CssUtils.IsInitialOrInheritOrUnset(shorthandExpression))
{
return(JavaUtil.ArraysAsList(new CssDeclaration(CommonCssConstants.BACKGROUND_POSITION_X, shorthandExpression
), new CssDeclaration(CommonCssConstants.BACKGROUND_POSITION_Y, shorthandExpression)));
}
if (String.IsNullOrEmpty(shorthandExpression.Trim()))
{
LOGGER.Error(MessageFormatUtil.Format(iText.StyledXmlParser.LogMessageConstant.SHORTHAND_PROPERTY_CANNOT_BE_EMPTY
, CommonCssConstants.BACKGROUND_POSITION));
return(new List <CssDeclaration>());
}
IList <IList <String> > propsList = CssUtils.ExtractShorthandProperties(shorthandExpression);
IDictionary <String, String> resolvedProps = new Dictionary <String, String>();
IDictionary <String, String> values = new Dictionary <String, String>();
foreach (IList <String> props in propsList)
{
if (props.IsEmpty())
{
LOGGER.Error(MessageFormatUtil.Format(iText.StyledXmlParser.LogMessageConstant.SHORTHAND_PROPERTY_CANNOT_BE_EMPTY
, CommonCssConstants.BACKGROUND_POSITION));
return(new List <CssDeclaration>());
}
if (!ParsePositionShorthand(props, values))
{
LOGGER.Error(MessageFormatUtil.Format(iText.StyledXmlParser.LogMessageConstant.INVALID_CSS_PROPERTY_DECLARATION
, shorthandExpression));
return(new List <CssDeclaration>());
}
UpdateValue(resolvedProps, values, CommonCssConstants.BACKGROUND_POSITION_X);
UpdateValue(resolvedProps, values, CommonCssConstants.BACKGROUND_POSITION_Y);
values.Clear();
}
if (!CheckProperty(resolvedProps, CommonCssConstants.BACKGROUND_POSITION_X) || !CheckProperty(resolvedProps
, CommonCssConstants.BACKGROUND_POSITION_Y))
{
return(new List <CssDeclaration>());
}
return(JavaUtil.ArraysAsList(new CssDeclaration(CommonCssConstants.BACKGROUND_POSITION_X, resolvedProps.Get
(CommonCssConstants.BACKGROUND_POSITION_X)), new CssDeclaration(CommonCssConstants.BACKGROUND_POSITION_Y
, resolvedProps.Get(CommonCssConstants.BACKGROUND_POSITION_Y))));
}
