A string wrapped as an object of type {@link SafeStyles}.

This class is package-private and intended for internal use by the {@link com.google.gwt.safecss} package.

All implementors must implement .equals and .hashCode so that they operate just like String.equals() and String.hashCode().

class SafeStylesString implements SafeStyles {

 String _css = "";

 /**
  * Constructs a {@link SafeStylesString} from a string. Callers are
  * responsible for ensuring that the string passed as the argument to this
  * constructor satisfies the constraints of the contract imposed by the
  * {@link SafeStyles} interface.
  * 
  * @param css the string to be wrapped as a {@link SafeStyles}
  */
 SafeStylesString(String css) {
   SafeStylesUtils.verifySafeStylesConstraints(css);
   this._css = css;
 }

 /**
  * {@inheritDoc}
  */
 String asString() {
   return _css;
 }

 /**
  * Compares this string to the specified object.
  */
 bool operator ==(Object obj) {
   if (!(obj is SafeStyles)) {
     return false;
   }
   return _css == (obj as SafeStyles).asString();
 }
 
 /**
  * Get a hash code for this object.
  *
  * All objects have hash codes. Hash codes are guaranteed to be the
  * same for objects that are equal when compared using the equality
  * operator [:==:]. Other than that there are no guarantees about
  * the hash codes. They will not be consistent between runs and
  * there are no distribution guarantees.
  *
  * If a subclass overrides [hashCode] it should override the
  * equality operator as well to maintain consistency.
  */
 int get hashCode {
   return _css == null ? 0 : _css.hashCode;
 }
}