/*
 * Copyright 2011 Greg Milette and Adam Stroud
 * 
 * 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 root.gast.speech.voiceaction;

import root.gast.speech.text.WordList;
import root.gast.speech.text.match.WordMatcher;

/**
 * matches using the provided {@link WordMatcher}
 * @author Greg Milette <<a href="mailto:gregorym@gmail.com">gregorym@gmail.com</a>>
 */
public class MatcherCommand implements VoiceActionCommand
{
    private static final String TAG = "MatcherCommand";
    
    private WordMatcher matcher;

    private OnUnderstoodListener onUnderstood;

    public MatcherCommand(WordMatcher matcher, 
            OnUnderstoodListener onUnderstood)
    {
        this.matcher = matcher;
        this.onUnderstood = onUnderstood;
    }

    @Override
    public boolean interpret(WordList heard, float[] confidence)
    {
        boolean understood = false;
        if (matcher.isIn(heard.getWords()))
        {
            understood = true;
            if (onUnderstood != null)
            {
                onUnderstood.understood();
            }
        }
        return understood;
    }

    public OnUnderstoodListener getOnUnderstood()
    {
        return onUnderstood;
    }
}