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/**
 *  Copyright 2005-2015 Red Hat, Inc.
 *
 *  Red Hat 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 io.fabric8.forge.addon.utils.completer;

import org.jboss.forge.addon.ui.context.UIContext;
import org.jboss.forge.addon.ui.input.InputComponent;
import org.jboss.forge.addon.ui.input.UICompleter;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.SortedSet;
import java.util.TreeSet;

/**
 * A completer of string values
 */
public class StringCompleter implements UICompleter {
    private final SortedSet valueSet = new TreeSet<>();

    public StringCompleter(Collection values) {
        valueSet.addAll(values);
    }

    @Override
    public Iterable getCompletionProposals(UIContext context, InputComponent input, String value) {
        List answer = new ArrayList();
        for (String name : valueSet) {
            if (value == null || value.isEmpty() || name.indexOf(value) >= 0) {
                answer.add(name);
            }
        }

        return answer;
    }
}