/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.jmeter.protocol.java.control.gui;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class ClassFilter {

    protected String[] pkgs = new String[0];
    /**
     *
     */
    public ClassFilter() {
        super();
    }

    public void setPackges(String[] pk) {
        this.pkgs = pk;
    }

    public void addPackage(String pkg) {
        String[] newpkg = new String[pkgs.length + 1];
        System.arraycopy(pkgs,0,newpkg,0,pkgs.length);
        newpkg[pkgs.length] = pkg;
        pkgs = newpkg;
    }

    public boolean include(String text) {
        boolean inc = false;
        for (int idx=0; idx < pkgs.length; idx++) {
            if (text.startsWith(pkgs[idx])){
                inc = true;
                break;
            }
        }
        return inc;
    }

    public Object[] filterArray(List<String> items) {
        Iterator<String> itr = items.iterator();
        ArrayList<Object> newlist = new ArrayList<Object>();
        while (itr.hasNext()) {
            String item = itr.next();
            if (include(item)) {
                newlist.add(item);
            }
        }
        if (newlist.size() > 0) {
            return newlist.toArray();
        } else {
            return new Object[0];
        }
    }

    public int size(){
        return pkgs.length;
    }
}

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.jmeter.protocol.java.control.gui;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

class ClassFilter {

    private String[] pkgs = new String[0];

    ClassFilter() {
        super();
    }

    void setPackges(String[] pk) {
        this.pkgs = pk;
    }

    private boolean include(String text) {
        if (pkgs.length == 0) return true; // i.e. no filter
        boolean inc = false;
        for (int idx=0; idx < pkgs.length; idx++) {
            if (text.startsWith(pkgs[idx])){
                inc = true;
                break;
            }
        }
        return inc;
    }

    Object[] filterArray(List<String> items) {
        Iterator<String> itr = items.iterator();
        ArrayList<Object> newlist = new ArrayList<Object>();
        while (itr.hasNext()) {
            String item = itr.next();
            if (include(item)) {
                newlist.add(item);
            }
        }
        if (newlist.size() > 0) {
            return newlist.toArray();
        } else {
            return new Object[0];
        }
    }

    int size(){
        return pkgs.length;
    }
}

Fix bug: an empty filter should pass everything Restrict use to package