/*
* Copyright (C) 2008 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.gxp.compiler.parser;
import com.google.common.base.Preconditions;
import com.google.gxp.compiler.alerts.AlertSink;
import com.google.gxp.compiler.alerts.SourcePosition;
import com.google.gxp.compiler.schema.ElementValidator;
import com.google.gxp.compiler.schema.Schema;
import java.util.*;
/**
* A {@code Namespace} for any output format (most notably XHTML/HTML).
*/
public class OutputNamespace implements Namespace {
private final Schema schema;
public String getUri() {
return schema.getNamespaceUri();
}
public OutputNamespace(Schema schema) {
this.schema = Preconditions.checkNotNull(schema);
}
public ParsedElement createElement(AlertSink alertSink,
SourcePosition sourcePosition,
String displayName,
String tagName,
List<ParsedAttribute> attrs,
List<ParsedElement> children) {
ElementValidator validator = schema.getElementValidator(tagName);
if (validator == null) {
alertSink.add(new UnknownElementError(sourcePosition, this,
displayName));
return null;
} else {
return new ParsedOutputElement(sourcePosition, displayName, schema,
validator, attrs, children);
}
}
/**
* Parsed representation of an output element. (typically an HTML element)
*/
public static class ParsedOutputElement extends ParsedElement {
private final Schema schema;
private final ElementValidator validator;
public ParsedOutputElement(SourcePosition sourcePosition,
String displayName, Schema schema,
ElementValidator validator,
List<ParsedAttribute> attrs,
List<ParsedElement> children) {
super(sourcePosition, displayName, attrs, children);
this.schema = schema;
this.validator = validator;
}
public Schema getSchema() {
return schema;
}
public ElementValidator getValidator() {
return validator;
}
public <T> T acceptVisitor(ParsedElementVisitor<T> visitor) {
return visitor.visitParsedOutputElement(this);
}
@Override
protected ParsedOutputElement withChildrenImpl(List<ParsedElement> children) {
return new ParsedOutputElement(getSourcePosition(), getDisplayName(),
schema, validator, getAttributes(),
children);
}
}
public <T> T acceptVisitor(NamespaceVisitor<T> visitor) {
return visitor.visitOutputNamespace(this);
}
}