package com.android.app;

import android.content.Context;

import android.graphics.Rect;

import android.graphics.drawable.Drawable;

import android.text.Editable;

import android.text.TextWatcher;

import android.util.AttributeSet;

import android.view.MotionEvent;

import android.view.View;

import com.android.app.R;

public class EditText extends android.widget.EditText implements View.OnFocusChangeListener {

    private Drawable mDeleteIcon;

    private Context mContext;

    public EditText(Context context) {

        super(context);

        mContext = context;

        init();

    }

    public EditText(Context context, AttributeSet attrs) {

        super(context, attrs);

        mContext = context;

        init();

    }

    public EditText(Context context, AttributeSet attrs, int defStyle) {

        super(context, attrs, defStyle);

        mContext = context;

        init();

    }

    private void init() {

        this.setOnFocusChangeListener(this);

        mDeleteIcon = mContext.getResources().getDrawable(R.drawable.ic_input_close);

        if (this.length() > 0) {

            setCompoundDrawablesWithIntrinsicBounds(null, null, mDeleteIcon, null);

        }

        this.addTextChangedListener(new TextWatcher() {

            @Override

            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override

            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override

            public void afterTextChanged(Editable s) {

                setDrawable();

            }

        });

    }

    // 设置删除图片

    private void setDrawable() {

        if (this.length() > 0)

            setCompoundDrawablesWithIntrinsicBounds(null, null, mDeleteIcon, null);

        else

            setCompoundDrawablesWithIntrinsicBounds(null, null, null, null);

    }

    @Override

    public void onFocusChange(View view, boolean b) {

        if (!b)

            setCompoundDrawablesWithIntrinsicBounds(null, null, null, null);

        else

            setDrawable();

    }

    // 处理删除事件

    @Override

    public boolean onTouchEvent(MotionEvent event) {

        if (mDeleteIcon != null && event.getAction() == MotionEvent.ACTION_UP) {

            int eventX = (int) event.getRawX();

            int eventY = (int) event.getRawY();

            Rect rect = new Rect();

            getGlobalVisibleRect(rect);

            rect.left = rect.right - 50;

            if (rect.contains(eventX, eventY))

                setText("");

        }

        return super.onTouchEvent(event);

    }

    @Override

    protected void finalize() throws Throwable {

        super.finalize();

    }

}