var playerObj;
var volumeVal; //音量
var flag = 0; // 进度条类别(0 表示设置的是视频进度，1表示设置音量)
var isTimeSeeking = false; // 是否是进度跳转
var timeEvtFlag = false; // 视频进度调节事件类型标识
var volumeEvtFlag = false; // 声音调节事件类型标识

//获取对象的在文档中的x坐标，用于播放进度条的控制和音量的控制
function getObjLeftPos(obj) { 
	var objPosLeft = obj.offsetLeft;
	while (obj.offsetParent && obj != obj.offsetParent) {
		obj = obj.offsetParent;
		if (obj.tagName == "div") {
			objPosLeft += obj.offsetLeft;
		}
	}    
	return objPosLeft;
}

// 播放 or 暂停
function togglePlay() {
	if(playerObj.getDuration() < 1){
		return;
	}
	if (playerObj.getPlayState() !=3) { // 如果不是播放状态
		startPlay(); 
	} else if (playerObj.getPlayState() !=2){ // 如果不是暂停状态
		pausePlay(); 
	}
}

// 播放
function startPlay() {
	playerObj.play(); 
	updatePlayUI();
}

// 暂停
function pausePlay() {
	playerObj.pause(); 
	updatePauseUI();
}

//如果播放，更改信息的外观
function updatePlayUI(){

}

//如果暂停，更改信息的外观
function updatePauseUI(){

}

//停止
function stopPlay() {
	if(playerObj.getDuration() < 1){ 
		return;
	}
	playerObj.stop();  
	m_onIdle();
}

// 快进
function goFastForward() {
	if(playerObj.getDuration() < 1){
		return;
	}
	var	currTime = playerObj.getCurrentTime();
	var	totalTime = playerObj.getDuration();
	if((totalTime-currTime) > 15){
		currTime += 15;
	} else { 
		currTime = totalTime - currTime;
	}
	playerObj.setCurrentTime(currTime); 
}

// 快退
function goFastBack() {
	if(playerObj.getDuration() < 1){
		return;
	}
	var	currTime = playerObj.getCurrentTime();
	if(currTime >= 15){
		currTime -= 15;
	} else {
		currTime = 0;
	}
	playerObj.setCurrentTime(currTime); 
}

//声音开/关
function toggleSound() {
	if(playerObj.getDuration() < 1){
		return;
	}
	if (playerObj.getMute()) {
	   playerObj.setMute(false);
	   updateOnMuteUI();
	} else {
	   playerObj.setMute(true);
	   updateOffMuteUI();
	}
}

//如果非静音，更改信息的外观
function updateOnMuteUI(){

}

//如果静音，更改信息的外观
function updateOffMuteUI(){

}
        
//-------------------------播放进度/音量调节鼠标动作处理开始----------------------------------*/



//-------------------------播放进度/音量调节鼠标动作处理结束----------------------------------*/

function playerUpdate() {
	var targetPosition=playerObj.getCurrentTime();
	
	// 触发视频跳转事件
	if(Math.abs(targetPosition - playerObj.currentPosition)>3){		   
		playerObj.custEvent.fire('seek');	
	}
	// 触发视频顺序播放事件
	if(targetPosition != playerObj.currentPosition){		
		playerObj.custEvent.fire('time');
	}
	playerObj.currentPosition=targetPosition;
	
	// 触发视频停止事件
	if(playerObj.getPlayState()==1) {		
		playerObj.custEvent.fire('idle');
	}
}



function playerInit() {
	playerObj=parent.getMediaPlayer('playerObj');

	if(playerObj.playerType=='msmedia'){
		playerObj.currentPosition=0;
		setInterval("playerUpdate()", 1000); 
	} 
	if(playerObj.playerType=='flash'){
		playerObj.onPlay(updatePlayUI);
		playerObj.onPause(updatePauseUI);
	} 

	
	playerObj.onTime(goTargetCourseCon);
	playerObj.onSeek(goTargetCourseCon);
	playerObj.onIdle(clearCourseConStyle);
		
}
var m_PlayerReady=function(){
	var el=getDomById('playerObj');
	if(!el){
		setTimeout(m_PlayerReady,20);
		return;
	}
	if(!isIE && el.tagName == 'OBJECT'){
		var embed = el.getElementsByTagName('EMBED')[0];
		if(embed){
			el=embed;
		}
	}
	if((el.playState && el.playState==3 && el.currentMedia.duration>0 && el.controls.currentPosition>=0) || (el.jwGetState && el.jwGetState() && el.jwGetDuration()>0 && el.jwGetPosition()>=0)){
	    playerInit();
	}else{
		setTimeout(m_PlayerReady,20);
	}
}
m_PlayerReady();


// 时间选择弹出框调用
function goToTime(currTime) {
	playerObj.setCurrentTime(currTime); 
}
function getMediaDuration(){
	return playerObj.getDuration();
}
function getTime(){
	var sTime = playerObj.getCurrentTimeString();
	var timeArr = sTime.split(":");
	return timeArr;
}
//--------------------------------------------同步处理-------------------------------------------------*/

// 视频同步讲义
function goTargetCourseCon() {
	var currentPos = playerObj.getCurrentTime();
	if(playerObj.getDuration() < 1){
		return;
	}
	getIframeWin().goTargetLectureCon(currentPos);
}

function clearCourseConStyle() {
	if(playerObj.getDuration() < 1){
		return;
	}
	getIframeWin().clearLectureBlockStyle();
}