net.metanotion.web.html.SafeString.java Source code

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Here is the source code for net.metanotion.web.html.SafeString.java
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/***************************************************************************
   Copyright 2014 Emily Estes
    
   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 net.metanotion.web.html;

import java.util.Arrays;
import java.util.Collections;
import java.util.Iterator;
import java.util.Set;

import org.apache.commons.text.StringEscapeUtils;

public final class SafeString implements Html<Html> {
    private final String html;

    public SafeString(final String html) {
        this.html = html;
    }

    @Override
    public String tag() {
        return "";
    }

    @Override
    public Html add(Object child) {
        throw new UnsupportedOperationException("no children are permitted in this tag.");
    }

    @Override
    public Html attribute(String attrib, Object value) {
        throw new UnsupportedOperationException("no attributes are permitted in this tag.");
    }

    @Override
    public Object get(final String attribute) {
        return null;
    }

    @Override
    public Set<String> keySet() {
        return Collections.emptySet();
    }

    @Override
    public Iterator<Object> iterator() {
        return Arrays.asList((Object) StringEscapeUtils.escapeHtml4(html)).iterator();
    }

    @Override
    public String toString() {
        return StringEscapeUtils.escapeHtml4(html);
    }

    @Override
    public Iterator<Object> children() {
        return Collections.emptyList().iterator();
    }
}