com.github.jknack.css.Rule.java Source code

Introduction

Here is the source code for com.github.jknack.css.Rule.java

Source

/**
 * Copyright (c) 2012-2013 Edgar Espina
 *
 * This file is part of css.java.
 *
 * 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.github.jknack.css;

import static org.apache.commons.lang3.StringUtils.join;

import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

public class Rule implements Iterable<Selector> {

    private final LinkedList<Selector> selectors = new LinkedList<Selector>();

    private final Map<String, Expression> properties = new LinkedHashMap<String, Expression>();

    public void add(final Selector selector) {
        selectors.add(selector);
    }

    public Selector first() {
        return selectors.getFirst();
    }

    public List<Selector> selectors() {
        return Collections.unmodifiableList(selectors);
    }

    @Override
    public Iterator<Selector> iterator() {
        return selectors().iterator();
    }

    public Rule property(final String name, final Expression expression) {
        properties.put(name, expression);
        return this;
    }

    public Expression property(final String name) {
        return properties.get(name);
    }

    @Override
    public String toString() {
        StringBuilder buffer = new StringBuilder();
        buffer.append(join(selectors, ", "));
        buffer.append(" {\n");
        for (Entry<String, Expression> entry : properties.entrySet()) {
            buffer.append("  ").append(entry.getKey()).append(": ").append(entry.getValue()).append(";\n");
        }
        buffer.append("}\n");
        return buffer.toString();
    }

}