// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
#include "PropertyBasedElement.hxx"
+#include <boost/algorithm/string/predicate.hpp>
namespace simgear
{
//----------------------------------------------------------------------------
void PropertyBasedElement::removeListener()
{
- _node->removeChangeListener(this);
+ if( _node )
+ _node->removeChangeListener(this);
}
//----------------------------------------------------------------------------
return _node;
}
+ //----------------------------------------------------------------------------
+ bool PropertyBasedElement::hasDataProp(const std::string& name) const
+ {
+ return getDataProp<SGPropertyNode*>(name) != NULL;
+ }
+
+ //----------------------------------------------------------------------------
+ void PropertyBasedElement::removeDataProp(const std::string& name)
+ {
+ SGPropertyNode* node = getDataProp<SGPropertyNode*>(name);
+ if( node )
+ _node->removeChild(node);
+ }
+
+ //----------------------------------------------------------------------------
+ static const std::string DATA_PREFIX("data-");
+
+ //----------------------------------------------------------------------------
+ std::string PropertyBasedElement::dataPropToAttrName(const std::string& name)
+ {
+ // http://www.w3.org/TR/html5/dom.html#attr-data-*
+ //
+ // 3. Insert the string data- at the front of name.
+
+ std::string attr_name;
+ for( std::string::const_iterator cur = name.begin();
+ cur != name.end();
+ ++cur )
+ {
+ // If name contains a "-" (U+002D) character followed by a lowercase ASCII
+ // letter, throw a SyntaxError exception and abort these steps.
+ if( *cur == '-' )
+ {
+ std::string::const_iterator next = cur + 1;
+ if( next != name.end() && islower(*next) )
+ return std::string();
+ }
+
+ // For each uppercase ASCII letter in name, insert a "-" (U+002D)
+ // character before the character and replace the character with the same
+ // character converted to ASCII lowercase.
+ if( isupper(*cur) )
+ {
+ attr_name.push_back('-');
+ attr_name.push_back( tolower(*cur) );
+ }
+ else
+ attr_name.push_back( *cur );
+ }
+ return DATA_PREFIX + attr_name;
+ }
+
+ //----------------------------------------------------------------------------
+ std::string PropertyBasedElement::attrToDataPropName(const std::string& name)
+ {
+ // http://www.w3.org/TR/html5/dom.html#attr-data-*
+ //
+ // For each "-" (U+002D) character in the name that is followed by a
+ // lowercase ASCII letter, remove the "-" (U+002D) character and replace the
+ // character that followed it by the same character converted to ASCII
+ // uppercase.
+
+ if( !boost::starts_with(name, DATA_PREFIX) )
+ return std::string();
+
+ std::string data_name;
+ for( std::string::const_iterator cur = name.begin() + DATA_PREFIX.length();
+ cur != name.end();
+ ++cur )
+ {
+ std::string::const_iterator next = cur + 1;
+ if( *cur == '-' && next != name.end() && islower(*next) )
+ {
+ data_name.push_back( toupper(*next) );
+ cur = next;
+ }
+ else
+ data_name.push_back(*cur);
+ }
+ return data_name;
+ }
+
} // namespace simgear