private bool PassesSwitchAllTest(ISvgTests element)
{
SvgDocument ownerDocument = ((SvgElement)element).OwnerDocument;
bool requiredFeatures = true;
if (element.RequiredFeatures.NumberOfItems > 0)
{
foreach (string req in element.RequiredFeatures)
{
if (!ownerDocument.Supports(req, string.Empty))
{
requiredFeatures = false;
break;
}
}
}
if (!requiredFeatures)
{
return(false);
}
bool requiredExtensions = true;
if (element.RequiredExtensions.NumberOfItems > 0)
{
foreach (string req in element.RequiredExtensions)
{
if (!ownerDocument.Supports(req, string.Empty))
{
requiredExtensions = false;
break;
}
}
}
if (!requiredExtensions)
{
return(false);
}
bool systemLanguage = true;
if (element.SystemLanguage.NumberOfItems > 0)
{
systemLanguage = false;
// TODO: or if one of the languages indicated by user preferences exactly
// equals a prefix of one of the languages given in the value of this
// parameter such that the first tag character following the prefix is "-".
foreach (string req in element.SystemLanguage)
{
if (string.Equals(req, _currentLang, StringComparison.OrdinalIgnoreCase))
{
systemLanguage = true;
}
}
}
return(systemLanguage);
}
private bool passesAllTest(ISvgTests element)
{
SvgDocument ownerDocument = ((SvgElement)element).OwnerDocument;
if(element.RequiredFeatures.NumberOfItems>0)
{
foreach(string req in (SvgStringList)element.RequiredFeatures)
{
if(!ownerDocument.Supports(req, String.Empty)) return false;
}
}
if(element.RequiredExtensions.NumberOfItems>0)
{
foreach(string req in (SvgStringList)element.RequiredExtensions)
{
if(!ownerDocument.Supports(req, String.Empty)) return false;
}
}
if(element.SystemLanguage.NumberOfItems>0)
{
// TODO: or if one of the languages indicated by user preferences exactly equals a prefix of one of the languages given in the value of this parameter such that the first tag character following the prefix is "-".
bool found = false;
string currentLang = System.Globalization.CultureInfo.CurrentCulture.TwoLetterISOLanguageName;
foreach(string req in (SvgStringList)element.SystemLanguage)
{
if(req == currentLang) found = true;
}
if(!found) return false;
}
return true;
}
public override void RenderChildren(ISvgRenderer renderer)
{
// search through all child elements and find one that passes all tests
foreach (XmlNode node in ChildNodes)
{
SvgElement element = node as SvgElement;
ISvgTests testsElement = node as ISvgTests;
if (element != null && testsElement != null && passesAllTest(testsElement))
{
element.Render(renderer);
// make sure we only render the first element that passes
break;
}
}
}
private bool passesAllTest(ISvgTests element)
{
SvgDocument ownerDocument = ((SvgElement)element).OwnerDocument;
if (element.RequiredFeatures.NumberOfItems > 0)
{
foreach (string req in (SvgStringList)element.RequiredFeatures)
{
if (!ownerDocument.Supports(req, String.Empty))
{
return(false);
}
}
}
if (element.RequiredExtensions.NumberOfItems > 0)
{
foreach (string req in (SvgStringList)element.RequiredExtensions)
{
if (!ownerDocument.Supports(req, String.Empty))
{
return(false);
}
}
}
if (element.SystemLanguage.NumberOfItems > 0)
{
// TODO: or if one of the languages indicated by user preferences exactly equals a prefix of one of the languages given in the value of this parameter such that the first tag character following the prefix is "-".
bool found = false;
string currentLang = System.Globalization.CultureInfo.CurrentCulture.TwoLetterISOLanguageName;
foreach (string req in (SvgStringList)element.SystemLanguage)
{
if (req == currentLang)
{
found = true;
}
}
if (!found)
{
return(false);
}
}
return(true);
}
private void RenderSwitchChildren(ISvgElement svgElement)
{
// search through all child elements and find one that passes all tests
foreach (XmlNode node in svgElement.ChildNodes)
{
if (node.NodeType != XmlNodeType.Element)
{
continue;
}
SvgElement element = node as SvgElement;
ISvgTests testsElement = node as ISvgTests;
if (element != null && testsElement != null && PassesSwitchAllTest(testsElement))
{
this.Render(element);
// make sure we only render the first element that passes
break;
}
}
}
private bool PassesSwitchAllTest(ISvgTests element)
{
SvgDocument ownerDocument = ((SvgElement)element).OwnerDocument;
bool requiredFeatures = true;
if (element.RequiredFeatures.NumberOfItems > 0)
{
foreach (string req in element.RequiredFeatures)
{
if (!ownerDocument.Supports(req, String.Empty))
{
requiredFeatures = false;
break;
}
}
}
if (!requiredFeatures)
{
return false;
}
bool requiredExtensions = true;
if (element.RequiredExtensions.NumberOfItems > 0)
{
foreach (string req in element.RequiredExtensions)
{
if (!ownerDocument.Supports(req, String.Empty))
{
requiredExtensions = false;
break;
}
}
}
if (!requiredExtensions)
{
return false;
}
bool systemLanguage = true;
if (element.SystemLanguage.NumberOfItems > 0)
{
systemLanguage = false;
// TODO: or if one of the languages indicated by user preferences exactly
// equals a prefix of one of the languages given in the value of this
// parameter such that the first tag character following the prefix is "-".
foreach (string req in element.SystemLanguage)
{
if (String.Equals(req, _currentLang, StringComparison.OrdinalIgnoreCase))
{
systemLanguage = true;
}
}
}
return systemLanguage;
}
