/*
 * Copyright (C) 2007 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.android.unit_tests.os;

import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.MessageQueue.IdleHandler;

abstract class TestHandlerThread {
    private boolean mDone = false;
    private boolean mSuccess = false;
    private RuntimeException mFailure = null;
    private Looper mLooper;
    
    public abstract void go();

    public TestHandlerThread() {
    }

    public void doTest(long timeout) {
        (new LooperThread()).start();

        synchronized (this) {
            long now = System.currentTimeMillis();
            long endTime = now + timeout;
            while (!mDone && now < endTime) {
                try {
                    wait(endTime-now);
                }
                catch (InterruptedException e) {
                }
                now = System.currentTimeMillis();
            }
        }

        mLooper.quit();

        if (!mDone) {
            throw new RuntimeException("test timed out");
        }
        if (!mSuccess) {
            throw mFailure;
        }
    }

    public Looper getLooper() {
        return mLooper;
    }

    public void success() {
        synchronized (this) {
            mSuccess = true;
            quit();
        }
    }

    public void failure(RuntimeException failure) {
        synchronized (this) {
            mSuccess = false;
            mFailure = failure;
            quit();
        }
    }

    class LooperThread extends Thread {
        public void run() {
            Looper.prepare();
            mLooper = Looper.myLooper();
            go();
            Looper.loop();

            synchronized (TestHandlerThread.this) {
                mDone = true;
                if (!mSuccess && mFailure == null) {
                    mFailure = new RuntimeException("no failure exception set");
                }
                TestHandlerThread.this.notifyAll();
            }
        }

    }

    private void quit() {
        synchronized (this) {
            mDone = true;
            notifyAll();
        }
    }
}