package com.android.systemuirom.keyguard;

import android.content.Context;

import android.view.Gravity;

import android.view.WindowManager;

import android.widget.Toast;

public class KeyguardToast {

    private static KeyguardToast sInstance;

    private Toast mToast = null;

    public static KeyguardToast getInstance() {

        if (sInstance == null) {

            sInstance = new KeyguardToast();

        }

        return sInstance;

    }

    private KeyguardToast() {

        // ignore

    }

    public Toast makeText(Context context, CharSequence text, int duration,

            boolean needOffsetPosition) {

        if (mToast != null) {

            mToast.cancel();

            mToast = null;

        }

        mToast = Toast.makeText(context, text, duration);

        mToast.getWindowParams().type = WindowManager.LayoutParams.TYPE_STATUS_BAR_PANEL;

        mToast.getWindowParams().privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_SHOW_FOR_ALL_USERS;

        mToast.getWindowParams().flags |= WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED;

        // Toast偏移位置

        if (needOffsetPosition) {

            // set offset position

            mToast.setGravity(Gravity.CENTER, 0, -300);

        }

        return mToast;

    }

    public void cancelToast() {

        if (mToast != null) {

            mToast.cancel();

            mToast = null;

        }

    }

}