Video Player Toothbrush

牙刷科技! 让所有视频播放器网页全屏！默认快捷键ALT+1
目前为 2014-07-26 提交的版本。查看最新版本。
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// ==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.bilibili.tv/*
// @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     *www.acfun.tv/*
// @include     *donghua.dmzj.com/*
// @include     *video.sina.com.cn/*
// @include     *.cntv.cn/*
// @include     *.douyutv.com/*
// @include     *music.163.com/*
// @include     *www.twitch.tv/*
// @version     3.0
// @grant       none
// @run-at      document-start
// ==/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:1px;height:100%;top:0;left:0;z-index:2147483646;}');
	var rightButton = document.createElement('span');
	rightButton.id = 'rightFullStackButton';
	rightButton.onclick = function() {
		playerControl();
	};
	document.body.appendChild(rightButton);
	addStyle('#rightFullStackButton{position:fixed;width:1px;height:100%;top:0;right:0;z-index:2147483646;}');
}

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.nodeName != 'OBJECT') {
			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 = player.style.cssText;
	}
	for (var i = 0; i < parentArray.length; i++) {
		if (!fullStatus) {
			backStyle[i] = parentArray[i].style.cssText;
		}
		parentArray[i].style.cssText = 'width:100% !important;height:100% !important;margin:0px !important;padding:0px !important;top:0px !important;left:0px !important;z-index:2147483645 !important;overflow:hidden !important;position:fixed !important;background:#000 !important;';
	}
	player.style.cssText = 'width:calc(100% - 2px) !important;height:100% !important;z-index:2147483645 !important;left:1px !important;position:relative !important;visibility:visible !important;'
	console.log('网页全屏完成');
	fullStatus = true;
}

function smallWin() {
	for (var i = 0; i < parentArray.length; i++) {
		parentArray[i].style.cssText = backStyle[i];
	}
	player.style.cssText = playerStyle;
	console.log('恢复完成');
	fullStatus = false;
}
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