/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * 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.android.server.firewall;

import com.android.internal.util.XmlUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import java.io.IOException;
import java.util.ArrayList;

abstract class FilterList implements Filter {
    protected final ArrayList<Filter> children = new ArrayList<Filter>();

    public FilterList readFromXml(XmlPullParser parser) throws IOException, XmlPullParserException {
        int outerDepth = parser.getDepth();
        while (XmlUtils.nextElementWithin(parser, outerDepth)) {
            readChild(parser);
        }
        return this;
    }

    protected void readChild(XmlPullParser parser) throws IOException, XmlPullParserException {
        Filter filter = IntentFirewall.parseFilter(parser);
        children.add(filter);
    }
}