ClearableAutoCompleteTextView

package com.bigoven.android.widgets;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.support.v7.widget.AppCompatAutoCompleteTextView;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;

import com.bigoven.android.R;

/**
 * Copyright 2015 Alex Yanchenko, with modifications by Chantell
 * <p/>
 * 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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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.
 */
public class ClearableAutoCompleteTextView extends AppCompatAutoCompleteTextView implements View.OnTouchListener,
        View.OnFocusChangeListener, TextWatcher {
    /**
     * To change the clear icon, set
     * <p/>
     * <pre>
     * android:drawableRight="@drawable/custom_icon"
     * </pre> in the XML
     */

    public interface OnClearListener {
        void onTextCleared();
    }

    public void setOnClearListener(OnClearListener onClearListener) {
        this.onClearListener = onClearListener;
    }

    private Drawable mCloseDrawable;
    private OnClearListener onClearListener;

    public ClearableAutoCompleteTextView(Context context) {
        super(context);
        init();
    }

    public ClearableAutoCompleteTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public ClearableAutoCompleteTextView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        init();
    }

    @Override
    public void setOnTouchListener(OnTouchListener l) {
        this.l = l;
    }

    @Override
    public void setOnFocusChangeListener(OnFocusChangeListener f) {
        this.f = f;
    }

    private OnTouchListener l;
    private OnFocusChangeListener f;

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        if (getCompoundDrawables()[2] != null) {
            boolean tappedX = event.getX() > (getWidth() - getPaddingRight() - mCloseDrawable
                    .getIntrinsicWidth());

            if (tappedX) {
                if (event.getAction() == MotionEvent.ACTION_UP) {
                    setText("");

                    if (onClearListener != null) {
                        onClearListener.onTextCleared();
                    }

                }
                return true;
            }
        }
        if (l != null) {
            return l.onTouch(v, event);
        }
        return false;
    }

    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        if (hasFocus) {
            setClearIconVisible(!TextUtils.isEmpty(getText()));
        } else {
            setClearIconVisible(false);
        }

        if (f != null) {
            f.onFocusChange(v, hasFocus);
        }
    }

    @Override
    public void onTextChanged(CharSequence text, int start, int lengthBefore, int lengthAfter) {
        super.onTextChanged(text, start, lengthBefore, lengthAfter);
        setClearIconVisible(!TextUtils.isEmpty(text));
    }

    @Override
    public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

    }

    @Override
    public void afterTextChanged(Editable editable) {

    }

    private void init() {
        mCloseDrawable = getCompoundDrawables()[2];

        if (mCloseDrawable == null) {
            mCloseDrawable = getResources()
                    .getDrawable(R.drawable.ic_close_black);
        }

        mCloseDrawable.setBounds(0, 0, mCloseDrawable.getIntrinsicWidth(), mCloseDrawable.getIntrinsicHeight());
        setClearIconVisible(false);
        super.setOnTouchListener(this);
        super.setOnFocusChangeListener(this);
        addTextChangedListener(this);
    }

    protected void setClearIconVisible(boolean visible) {
        boolean wasVisible = (getCompoundDrawables()[2] != null);
        if (visible != wasVisible) {
            Drawable x = visible ? mCloseDrawable : null;
            setCompoundDrawables(getCompoundDrawables()[0],
                    getCompoundDrawables()[1], x, getCompoundDrawables()[3]);
        }
    }
}