import java.util.Timer;

import java.util.TimerTask;

import android.app.Activity;

import android.content.Context;

import android.view.View;

import android.widget.TextView;

public class TipManager {

    private static final String TAG = TipManager.class.getSimpleName();

    private Context mContext;

    private TextView mView;

    private Timer timer = null;

    private TimerTask cancelTask = null;

    public TipManager(Context context, TextView view) {

        mContext = context;

        mView = view;

    }

    public void init() {

        timer = new Timer();

    }

    public void release() {

        if (cancelTask != null) {

            cancelTask.cancel();

            cancelTask = null;

        }

        if (timer != null) {

            timer.cancel();

            timer = null;

        }

    }

    public void show(CharSequence text) {

        // cancel hide task

        if (cancelTask != null) {

            cancelTask.cancel();

            cancelTask = null;

            timer.purge();

        }

        showUI(text);

    }

    public void show(CharSequence text, long duration) {

        showUI(text);

        // cancel hide task

        if (cancelTask != null) {

            cancelTask.cancel();

            cancelTask = null;

            timer.purge();

        }

        cancelTask = new TimerTask() {

            @Override

            public void run() {

                hideUI("default");

            }

        };

        timer.schedule(cancelTask, duration);

    }

    private void showUI(final CharSequence text) {

        ((Activity) mContext).runOnUiThread(new Runnable() {

            @Override

            public void run() {

                doShow(text);

            }

        });

    }

    private void hideUI(final CharSequence text) {

        ((Activity) mContext).runOnUiThread(new Runnable() {

            @Override

            public void run() {

                doHide(text);

            }

        });

    }

    private void doShow(CharSequence text) {

        mView.setText(text);

        mView.setVisibility(View.VISIBLE);

    }

    private void doHide(CharSequence text) {

        mView.setText(text);

        mView.setVisibility(View.INVISIBLE);

    }

}