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蓝奏云无障碍优化脚本
当前为
// ==UserScript==
// @name 蓝奏云无障碍优化
// @namespace https://accjs.org/
// @version 0.1
// @description 蓝奏云无障碍优化脚本
// @author 杨永全
// @updated 2021-11-03 09:28:10
// @match https://*.woozooo.com/*
// @grant none
// ==/UserScript==
(function() {
function amo(proc, target, options) {
target = target || document.body;
options = options || {
'childList': true,
'subtree': true
};
let mo = new MutationObserver((records) => {proc();});
mo.observe(target, options);
return mo;
}
function isVisible(t) {
return !! (!t.hasAttribute('disabled') && t.getAttribute('aria-hidden') !== 'true' && t.offsetParent !== null);
}
function gi(i, len, op) {
let n = op == '+' ? +1 : -1;
i = i + n;
if (i >= len) {
i = 0;
}
if (i < 0) {
i = len - 1;
}
return i;
}
function _toFocus(el) {
let tagName = el.tagName.toLowerCase();
let tagNames = ['div', 'p', 'span', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'ul', 'ol', 'li', 'form', 'img', 'nav', 'header', 'main', 'footer', 'section', 'aside'];
if (tagNames.includes(tagName) || (tagName == 'a' && !el.hasAttribute('href'))) {
if (!el.hasAttribute('tabindex')) {
el.setAttribute('tabindex', '-1');
}
}
el.focus();
}
function toFocus(focusSelector, op) {
let els = Array.prototype.slice.call(document.body.querySelectorAll('*'));
let len = els.length;
let aeIndex = Math.max(0, els.indexOf(document.activeElement));
let i = aeIndex == 0 ? 0 : gi(aeIndex, len, op);
do {
if (els[i].matches(focusSelector) && isVisible(els[i])) {
_toFocus(els[i]);
break;
}
i = gi(i, len, op);
} while ( i != aeIndex );
}
function nextFocus(selector) {
toFocus(selector, '+');
}
function previousFocus(selector) {
toFocus(selector, '-');
}
//get label from attributes
function getLabel(labels, src) {
let label = '';
if(typeof src != 'string' || src == '') {
return label;
}
label = src;
for(let key in labels) {
if(src.includes(labels[key])) {
label = key;
break;
}
}
return label;
}
function proc() {
//label map
let labels = {
"关闭": "f_cl",
"操作": "f_sela",
"删除": "f_selb",
"启用": "f_pwdon",
"禁用": "f_pwdoff"
};
//开始上传按钮、等待上传的文件列表、当前位置、文件和文件夹名、文件和文件夹的操作链接以及操作菜单、对话框的关闭按钮、移动对话框里选择文件夹
document.querySelectorAll('.uploadBtn, .filelist .title, .filelist .cancel, .f_tp .f_tpspan, .f_name2 .follink, .f_name .aspanlink, .f_sel a, .f_sel .f_view > div, div.f_cl, div.f_midf6').forEach(function(el) {
el.setAttribute('tabindex', '0');
el.setAttribute('role', 'link');
});
//需要添加 label 的元素
document.querySelectorAll('div.f_cl, .f_sel a').forEach(function(el) {
el.setAttribute('aria-label', getLabel(labels, el.getAttribute('class')));
});
//设置密码的开关
document.querySelectorAll('.f_pwdon, .f_pwdoff').forEach(function(el) {
el.setAttribute('role', 'checkbox');
el.setAttribute('aria-checked', 'true');
el.setAttribute('tabindex', '0');
el.setAttribute('aria-label', getLabel(labels, el.getAttribute('class')));
});
//文件浏览按钮在谷歌浏览器的提示不够友好，处理一下
document.querySelectorAll('input[type="file"]').forEach(function(el) {
el.setAttribute('aria-label', '浏览');
});
//页面底部有个上传按钮，看起来没什么用，隐藏掉
document.querySelectorAll('input[id*="html5"]').forEach(function(el) {
el.setAttribute('tabindex', '-1');
el.setAttribute('aria-hidden', 'true');
});
}
document.addEventListener('keydown', function(e) {
let t = e.target || null;
let xSelector = '.f_name a, .f_name2 .follink, .f_name .aspanlink';
let xKey = e.keyCode == 88;
let zSelector = '.uploadBtn, div.f_cl';
let zKey = e.keyCode == 90;
if (e.altKey && e.shiftKey && xKey) {
e.preventDefault();
previousFocus(xSelector);
} else if (e.altKey && xKey) {
e.preventDefault();
nextFocus(xSelector);
} else if (e.altKey && e.shiftKey && zKey) {
e.preventDefault();
previousFocus(zSelector);
} else if (e.altKey && zKey) {
e.preventDefault();
nextFocus(zSelector);
} else if(e.keyCode == 32 || e.keyCode == 13) {
if(t.matches('[role="checkbox"], [role="button"], [role="link"]')) {
t.click();
}
}
}, null);
amo(proc);
proc();
})();