samples/browseable/AppRestrictionEnforcer/src/com.example.android.apprestrictionenforcer/EasyTextWatcher.java

/*
 * Copyright (C) 2014 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.example.android.apprestrictionenforcer;

import android.text.TextWatcher;

/**
 * This is a wrapper around {@link TextWatcher} that overrides
 * {@link TextWatcher#beforeTextChanged(CharSequence, int, int, int)} and
 * {@link TextWatcher#onTextChanged(CharSequence, int, int, int)} with empty bodies.
 */
public abstract class EasyTextWatcher implements TextWatcher {

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        // Do nothing
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        // Do nothing
    }

}