// ==UserScript==
// @name        Video Player Toothbrush
// @namespace   http://www.icycat.com
// @description 牙刷科技! 让所有视频播放器网页全屏！默认快捷键ALT+1
// @include     *www.bilibili.com/*
// @include     *www.iqiyi.com/*
// @include     *v.youku.com/*
// @include     *www.youtube.com/*
// @include     *v.17173.com/*
// @include     *www.tudou.com/*
// @include     *.letv.com/*
// @include     *v.pptv.com/*
// @include     *tv.sohu.com/*
// @include     *v.ku6.com/*
// @include     *vod.kankan.com/*
// @include     *v.qq.com/*
// @include     *www.56.com/*
// @include     *live.yy.com/*
// @include     *www.acfun.com/*
// @include     *donghua.dmzj.com/*
// @include     *video.sina.com.cn/*
// @include     *.cntv.cn/*
// @include     *.douyutv.com/*
// @include     *music.163.com/*
// @version     2.6
// @grant       none
// @run-at      document-start
// @downloadURL none
// ==/UserScript==

//若有需要可以自行添加域名，按照include的格式添加即可。
//自行修改快捷键，请参考下面代码中的注释。注意焦点在flash上时快捷键会失效。

var parentArray = new Array(),
	player = null,
	fullStatus = false,
	backStyle = new Array(),
	childStyle = new Array(),
	playerStyle, parent, type, iframe;

document.addEventListener('DOMContentLoaded', init, false);

function init() {
	createButton();
	window.addEventListener("keydown", function(e) {
		//默认快捷键为alt + 1, 全屏/恢复。altkey是按键ALT,keyCode=49是按键1，需要修改为其他快捷键的请搜索"keycode"，修改为按键对应的数字。
		if (e.altKey && e.keyCode == 49) {
			playerControl();
		}
	}, false);
	console.log('初始化完成');
}

function createButton() {
	var leftButton = document.createElement('span');
	leftButton.id = 'leftFullStackButton';
	leftButton.onclick = function() {
		playerControl();
	};
	document.body.appendChild(leftButton);
	addStyle('#leftFullStackButton{position:fixed;width:2px;height:100%;top:0;left:0;z-index:666666;}');
	var rightButton = document.createElement('span');
	rightButton.id = 'rightFullStackButton';
	rightButton.onclick = function() {
		playerControl();
	};
	document.body.appendChild(rightButton);
	addStyle('#rightFullStackButton{position:fixed;width:2px;height:100%;top:0;right:0;z-index:666666;}');
}

function addStyle(css) {
	var style = document.createElement('style');
	style.type = 'text/css';
	var node = document.createTextNode(css);
	style.appendChild(node);
	document.head.appendChild(style);
}

function playerControl() {
	if (!player) {
		checkPlayer();
	} else {
		if (!fullStatus) {
			switch (type) {
				case 'object':
					var objectArray = parent.getElementsByTagName('object');
					checkObject(objectArray);
					break;
				case 'embed':
					var embedArray = parent.getElementsByTagName('embed');
					checkEmbed(embedArray);
					break;
				case 'innerIframe':
				case 'iframe':
					var iframeArray = parent.getElementsByTagName('iframe');
					checkIframe(iframeArray);
					break;
			}
			window.addEventListener('resize', fullWin, false);
			fullWin();
		} else {
			window.removeEventListener('resize', fullWin, false);
			smallWin();
		}
	}
}

function checkPlayer() {
	var objectArray = document.getElementsByTagName('object');
	console.log('object数量' + objectArray.length);
	checkObject(objectArray);
	if (!player) {
		console.log('未找到object播放器');
		var embedArray = document.getElementsByTagName('embed');
		console.log('embed数量' + embedArray.length);
		checkEmbed(embedArray);
	}
	if (!player) {
		console.log('未找到embed播放器');
		var iframeArray = document.getElementsByTagName('iframe');
		console.log('iframe数量' + iframeArray.length);
		checkIframe(iframeArray);
	}
	if (!player) {
		console.log('未找到iframe引用的播放器');
		return;
	}
	parent = player.parentNode;
	var full = player;
	while (full = full.parentNode) {
		if (full.getAttribute) {
			full.setAttribute('full_stack', true);
			parentArray.push(full);
		}
		if (full.nodeName == 'HTML') {
			break;
		}
	}
	if (type == 'innerIframe') {
		full = iframe;
		do {
			if (full.getAttribute) {
				full.setAttribute('full_stack', true);
				parentArray.push(full);
			}
			if (full.nodeName == 'HTML') {
				break;
			}
		} while (full = full.parentNode);
	}
	window.addEventListener('resize', fullWin, false);
	fullWin();
}

function checkObject(objectArray) {
	if (objectArray.length > 0) {
		for (i = 0; i < objectArray.length; i++) {
			console.log('object播放器检测' + i);
			if (objectArray[i].type == 'application/x-shockwave-flash' && objectArray[i].offsetWidth > 299 && objectArray[i].offsetHeight > 199) {
				player = objectArray[i];
				type = 'object';
				console.log('找到object播放器');
				break;
			}
		}
	}
}

function checkEmbed(embedArray) {
	if (embedArray.length > 0) {
		for (i = 0; i < embedArray.length; i++) {
			console.log('embed播放器检测' + i);
			if (embedArray[i].type == 'application/x-shockwave-flash' && embedArray[i].offsetWidth > 299 && embedArray[i].offsetHeight > 199) {
				player = embedArray[i];
				type = 'embed';
				console.log('找到embed播放器');
				break;
			}
		}
	}
}

function checkIframe(iframeArray) {
	if (iframeArray.length > 0) {
		for (var i = 0; i < iframeArray.length; i++) {
			if (iframeArray[i].offsetWidth > 299 && iframeArray[i].offsetHeight > 199) {
				try {
					var objectArray = iframeArray[i].contentWindow.document.getElementsByTagName('object');
					console.log('iframe' + i + '中object数量' + objectArray.length);
					checkObject(objectArray);
					if (!player) {
						console.log('iframe' + i + '中未找到object播放器');
						var embedArray = iframeArray[i].contentWindow.document.getElementsByTagName('embed');
						console.log('iframe' + i + '中embed数量' + embedArray.length);
						checkEmbed(embedArray);
					}
					if (player) {
						iframe = iframeArray[i];
						type = 'innerIframe';
						break;
					} else {
						console.log('未找到iframe' + i + '中的播放器');
					}
				} catch (e) {
					player = iframeArray[i];
					type = 'iframe';
					console.log('找到可能通过iframe跨域引用的播放器');
					break;
				}
			}
		}
	}
}

function fullWin() {
	if (!fullStatus) {
		playerStyle = {
			width: player.style.width,
			height: player.style.height,
			margin: player.style.margin,
			padding: player.style.padding,
			position: player.style.position,
			zIndex: player.style.zIndex,
			left: player.style.left
		};
	}
	for (var i = 0; i < parentArray.length; i++) {
		if (!fullStatus) {
			//备份非全屏状态下的style
			backStyle[i] = {
				width: parentArray[i].style.width,
				height: parentArray[i].style.height,
				position: parentArray[i].style.position,
				margin: parentArray[i].style.margin,
				padding: parentArray[i].style.padding,
				background: parentArray[i].style.background,
				top: parentArray[i].style.top,
				left: parentArray[i].style.left,
				zIndex: parentArray[i].style.zIndex,
				overflow: parentArray[i].style.overflow
			};
		}
		parentArray[i].style.width = '100%';
		parentArray[i].style.height = '100%';
		//chrome下flash父级若是object切换position会引发重载入
		if (i == 0 && parentArray[i].nodeName == 'OBJECT' && parentArray[i].style.position != 'fixed' && parentArray[i].style.position != 'absolute') {
			parentArray[i].style.position = 'relative';
		} else {
			parentArray[i].style.position = 'fixed';
		}
		parentArray[i].style.margin = '0';
		parentArray[i].style.padding = '0';
		parentArray[i].style.background = '#000';
		parentArray[i].style.top = '0';
		parentArray[i].style.left = '0';
		parentArray[i].style.zIndex = '555555';
		parentArray[i].style.overflow = 'hidden';
	}
	player.style.width = 'calc(100% - 2px)';
	player.style.height = '100%';
	player.style.margin = '0';
	player.style.padding = '0';
	// chrome下flash不能在常规流和绝对定位切换position，否则会引发重载入
	if (player.style.position != 'fixed' && player.style.position != 'absolute') {
		player.style.position = 'relative';
	} else {
		player.style.position = 'fixed';
	}
	player.style.zIndex = '555555';
	player.style.left = '1px';
	console.log('网页全屏完成');
	fullStatus = true;
}

function smallWin() {
	for (var i = 0; i < parentArray.length; i++) {
		parentArray[i].style.width = backStyle[i].width;
		parentArray[i].style.height = backStyle[i].height;
		parentArray[i].style.position = backStyle[i].position;
		parentArray[i].style.margin = backStyle[i].margin;
		parentArray[i].style.padding = backStyle[i].padding;
		parentArray[i].style.background = backStyle[i].background;
		parentArray[i].style.top = backStyle[i].top;
		parentArray[i].style.left = backStyle[i].left;
		parentArray[i].style.zIndex = backStyle[i].zIndex;
		parentArray[i].style.overflow = backStyle[i].overflow;
	}
	player.style.width = playerStyle.width;
	player.style.height = playerStyle.height;
	player.style.margin = playerStyle.margin;
	player.style.padding = playerStyle.padding;
	player.style.position = playerStyle.position;
	player.style.zIndex = playerStyle.zIndex;
	player.style.left = playerStyle.left;
	console.log('恢复完成');
	fullStatus = false;
}