private bool IsPropertyValueCorrespondsPropertyType(String value)
{
CssBackgroundUtils.BackgroundPropertyType propertyType = CssBackgroundUtils.ResolveBackgroundPropertyType(
value);
if (propertyType == CssBackgroundUtils.BackgroundPropertyType.UNDEFINED)
{
return(false);
}
if (CssBackgroundUtils.GetBackgroundPropertyNameFromType(propertyType).Equals(backgroundProperty))
{
return(true);
}
if (propertyType == CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_POSITION && (CommonCssConstants.BACKGROUND_POSITION_X
.Equals(backgroundProperty) || CommonCssConstants.BACKGROUND_POSITION_Y.Equals(backgroundProperty)))
{
return(true);
}
if (propertyType == CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_ORIGIN_OR_CLIP && (CommonCssConstants
.BACKGROUND_CLIP.Equals(backgroundProperty) || CommonCssConstants.BACKGROUND_ORIGIN.Equals(backgroundProperty
)))
{
return(true);
}
return(propertyType == CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_POSITION_OR_SIZE && (CommonCssConstants
.BACKGROUND_POSITION_X.Equals(backgroundProperty) || CommonCssConstants.BACKGROUND_POSITION_Y.Equals(backgroundProperty
) || CommonCssConstants.BACKGROUND_SIZE.Equals(backgroundProperty)));
}
// 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
))));
}
private static void FillNotProcessedProperties(IDictionary <CssBackgroundUtils.BackgroundPropertyType, String
> resolvedProps, ICollection <CssBackgroundUtils.BackgroundPropertyType> usedTypes)
{
foreach (CssBackgroundUtils.BackgroundPropertyType type in new List <CssBackgroundUtils.BackgroundPropertyType
>(resolvedProps.Keys))
{
if (!usedTypes.Contains(type) && type != CssBackgroundUtils.BackgroundPropertyType.BACKGROUND_COLOR)
{
if (resolvedProps.Get(type) == null)
{
resolvedProps.Put(type, CssDefaults.GetDefaultValue(CssBackgroundUtils.GetBackgroundPropertyNameFromType(type
)));
}
else
{
resolvedProps.Put(type, resolvedProps.Get(type) + "," + CssDefaults.GetDefaultValue(CssBackgroundUtils.GetBackgroundPropertyNameFromType
(type)));
}
}
}
}
private static bool CheckProperties(IDictionary <CssBackgroundUtils.BackgroundPropertyType, String> resolvedProps
)
{
foreach (KeyValuePair <CssBackgroundUtils.BackgroundPropertyType, String> property in resolvedProps)
{
if (!CssDeclarationValidationMaster.CheckDeclaration(new CssDeclaration(CssBackgroundUtils.GetBackgroundPropertyNameFromType
(property.Key), property.Value)))
{
LOGGER.Error(MessageFormatUtil.Format(iText.StyledXmlParser.LogMessageConstant.INVALID_CSS_PROPERTY_DECLARATION
, property.Value));
return(false);
}
IShorthandResolver resolver = ShorthandResolverFactory.GetShorthandResolver(CssBackgroundUtils.GetBackgroundPropertyNameFromType
(property.Key));
if (resolver != null && resolver.ResolveShorthand(property.Value).IsEmpty())
{
return(false);
}
}
return(true);
}