可访问性优化
当前为
// ==UserScript==
// @name accessibility_盲网快捷键
// @namespace https://www.zhihu.com/people/yin-xiao-bo-11
// @require https://greasyfork.org/scripts/375077-handlekey/code/handleKey.js?version=649955
// @version 0.1.5.1
// @description 可访问性优化
// @author Veg
// @include http://www.zd.hk/*
// @include http://apk.qt06.com/*
// @include http://*.amhl.net/*
// @include http://*tingyouwang.com/*
// @include http://bbs.amtkjy.com/*
// @grant none
// ==/UserScript==
"use strict";
var host = window.location.host;
//包含页面所有元素的数组
let zdElement = [];
let zdFES;
function zdHotKey(k) {
if (!k.altKey) {
return false;
} else {
//获取页面所有元素，push 给 zdElement 数组
zdElement.length = 0;
var all = document.all;
for (var i = 0, l = all.length; i < l; i++) {
if (all[i].nodeType == 1) {
zdElement.push(all[i]);
}
}
//获取焦点元素的数组下标
zdFES = zdGetSubscript(zdElement, document.activeElement);
if (host === 'www.zd.hk') {
//页面包含指定元素才执行快捷键函数
var subject = document.querySelector('a.subject_link');
if (subject !== null) {
subjectHotKey(k);
}
var message = document.querySelector('div.message')
if (message !== null) {
floorHotKey(k);
}
}
if (host === 'bbs.amhl.net' || host === 'www.amhl.net' || host === 'apk.qt06.com' || host === 'tingyouwang.com' || host === 'www.tingyouwang.com' || host === 'bbs.amtkjy.com') {
accesskey(k);
}
}
}
document.addEventListener('keydown', function (k) {
zdHotKey(k);
if (host === 'www.zd.hk') {
player(k);
}
}, null);
//获取数组下标的函数
function zdGetSubscript(arrays, obj) {
var i = arrays.length;
while (i--) {
if (arrays[i] === obj) {
return i;
}
}
return false;
}
function subjectHotKey(k) {
let subscriptArray = [];
var target = zdElement.filter(function (t) {
if ((t.classList.contains('subject_link') || t.innerText == '下一页' || t.innerText == '上一页') && t.tagName == 'A') {
if (t.hasAttribute('accesskey')) {
t.removeAttribute('accesskey', '*');
}
subscriptArray.push(zdGetSubscript(zdElement, t));
return t;
}
});
if (k.shiftKey && k.altKey && k.keyCode == 88) {
previousTarget(target, subscriptArray);
}
if (k.shiftKey) return false;
if (k.altKey && k.keyCode == 88) {
nextTarget(target, subscriptArray)
}
}
//楼层
function floorHotKey(k) {
let subscriptArray = [];
var target = zdElement.filter(function (t) {
if (t.getAttribute('tabindex') == '-1' && t.tagName == 'DIV' && !t.hasAttribute('role') || (t.innerText == '下一页' || t.innerText == '上一页') && t.tagName == 'A' && !t.hasAttribute('role')) {
if (t.offsetParent !== null) {
if (t.getAttribute('aria-label') == null) {
t.setAttribute('aria-label', t.parentNode.innerText);
if (t.hasAttribute('accesskey')) {
t.removeAttribute('accesskey', '*');
}
}
if (t.innerText == '上一页' && t.tagName == 'A') {
t.classList.add('zd-page-up');
}
if (t.innerText == '下一页' && t.tagName == 'A') {
t.classList.add('zd-page-down');
}
subscriptArray.push(zdGetSubscript(zdElement, t));
return t;
}
}
});
if (document.querySelector('a.zd-page-up') !== null) {
document.querySelector('a.zd-page-up').setAttribute('role', 'link');
}
if (document.querySelector('a.zd-page-down') !== null) {
document.querySelector('a.zd-page-down').setAttribute('role', 'link');
}
if (k.shiftKey && k.altKey && k.keyCode == 88) {
previousTarget(target, subscriptArray);
}
if (k.shiftKey) return false;
if (k.altKey && k.keyCode == 88) {
nextTarget(target, subscriptArray)
}
}
function previousTarget(target, subscriptArray) {
for (var i = 0, l = target.length || subscriptArray.length; i < l; i++) {
if (zdFES > subscriptArray[l - 1] || zdFES <= subscriptArray[0]) {
target[l - 1].focus();
break;
} else if (zdFES <= subscriptArray[i]) {
var xv = zdGetSubscript(target, target[i]);
target[xv - 1].focus();
break;
}
}
return false;
}
function nextTarget(target, subscriptArray) {
for (var i = 0, l = target.length || subscriptArray.length; i < l; i++) {
if (zdFES < subscriptArray[i]) {
var xv = zdGetSubscript(target, target[i]);
target[xv].focus();
break;
} else if (zdFES < subscriptArray[0] || zdFES >= subscriptArray[l - 1]) {
target[0].focus();
break;
}
}
return false;
}
function accesskey(k) {
let Xscript = [];
var xAcc = handleKey('x', 'accesskey-x', Xscript);
let Zscript = [];
var zAcc = handleKey('z', 'accesskey-z', Zscript);
if (k.shiftKey && k.altKey && k.keyCode == 88) {
previousTarget(xAcc, Xscript);
}
if (k.shiftKey && k.altKey && k.keyCode == 90) {
previousTarget(zAcc, Zscript);
}
if (k.shiftKey) return false;
if (k.altKey && k.keyCode == 88) {
nextTarget(xAcc, Xscript)
}
if (k.altKey && k.keyCode == 90) {
nextTarget(zAcc, Zscript)
}
}
function player(k) {
var audios = document.querySelector('div.plyr--playing');
if (audios !== null) {
var audio = audios.querySelector('audio');
if (audio !== null) {
if (k.shiftKey && k.keyCode == 32) {
if (audio.paused !== true) {
audio.pause();
} else if (audio.play !== true) {
audio.play();
}
}
var volume = audio.volume;
if (k.shiftKey && k.keyCode == 38) {
audio.volume = volume + 0.05;
}
if (k.shiftKey && k.keyCode == 40) {
audio.volume = volume - 0.05;
}
if (k.shiftKey && k.keyCode == 37) {
audio.currentTime -= 10;
}
if (k.shiftKey && k.keyCode == 39) {
audio.currentTime += 10;
}
if (k.shiftKey && k.keyCode == 34) {
audio.currentTime = 0;
audio.play();
}
if (k.shiftKey && k.keyCode == 33) {
if (audio.muted == true) {
audio.muted = false;
} else {
audio.muted = true;
}
}
}
}
}