// This is a greasemonkey script, for use with the Firefox extension Greasemonkey.
// More info: http://greasemonkey.mozdev.org/
//
// ==UserScript==
// @name Next Page
// @author Sunwan
// @version 0.1.7.3.001
// @namespace https://greasyfork.org/zh-CN/scripts/36139-next-page
// @description 使用左右方向键来翻页 [Ver 0.1.7.3+]
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_registerMenuCommand
// @include http://*
// @include https://*
// ==/UserScript==
(function() {
var checked = false;
var delay = false;
var next = {};
var previous = {};
// 下一页链接里的文字
next.texts = [ 'next',
'next page',
'old',
'older',
'earlier',
'下页',
'下頁',
'下一页',
'下一頁',
'后一页',
'后一頁',
'翻下页',
'翻下頁',
'后页',
'后頁',
'下翻',
'下一个',
'下一张',
'下一幅',
'下一节',
'下一章',
'下一篇',
'后一章',
'后一篇'
];
// 上一页链接里的文字
previous.texts = [ 'previous',
'prev',
'previous page',
'new',
'newer',
'later',
'上页',
'上頁',
'上一页',
'上一頁',
'前一页',
'前一頁',
'翻上页',
'翻上頁',
'前页',
'前頁',
'上翻',
'上一个',
'上一张',
'上一幅',
'上一节',
'上一章',
'上一篇',
'前一章',
'前一篇'
];
// 可能会误判的关键词
next.miswords = { "下一章": 30,
"下一篇": 30,
"后一章": 30,
"后一篇": 30,
"下一节": 30,
">>": 2000,
"»": 2000
}
previous.miswords = { "上一章": 30,
"上一篇": 30,
"前一章": 30,
"前一篇": 30,
"上一节": 30,
"<<": 2000,
"«": 2000
}
// 取得自定义关键词
getCustom(next, "next");
getCustom(previous, "previous");
// 注册脚本菜单
registerMenu("next");
registerMenu("previous");
// 最后添加一些论坛使用的翻页符号
next.texts.push(">>");
next.texts.push(">");
next.texts.push("»");
next.texts.push("›");
previous.texts.push("<<");
previous.texts.push("<");
previous.texts.push("«");
previous.texts.push("‹");
// 翻页文字的前面和后面可能包含的字符（正则表达式）
var preRegexp = '(^\\s*(?:[<‹«]*|[>›»]*|[\\(\\[『「［【]?)\\s*)';
var nextRegexp = '(\\s*(?:[>›»]*|[\\)\\]』」］】]?)\\s*$)';
// 取得并设置自定义关键词
function getCustom(aObj, key) {
var site, re;
var cKeyWords = GM_getValue("custom_" + key, "");
var words = cKeyWords.split(/,|，/);
for each (var w in words) {
site = null;
if (/^\s*{\s*(\S*?)\s*}(.*)$/.test(w)) {
site = RegExp.$1;
w = RegExp.$2;
site = site.replace(/[\/\?\.\(\)\+\-\[\]\$]/g, "\\$&").replace(/\*/g, "\.*");
}
w = w.replace(/\\/g, "\\").replace(/^\s+|\s+$/g, "");
if (w) {
if (site) {
re = eval('/' + site + '/i');
if (re.test(location.href))
aObj.texts.push(w);
}
else
aObj.texts.push(w);
}
}
}
// 注册菜单
function registerMenu(key) {
if (navigator.language == "zh-CN") {
var word = key == "next" ? "下一页" : "上一页";
GM_registerMenuCommand("Next Page " + word + "关键词", function(){setCustom(key, word)});
}
else {
GM_registerMenuCommand("Next Page custom_" + key, function(){setCustom(key, key)});
}
}
// 设置新的关键词
function setCustom(k, w) {
var text = navigator.language == "zh-CN" ? "请输入“"+w+"”的关键词，以“,”号分隔开。" : "Please enter the "+w+" page key-words, split with ','.";
var result = prompt(text, GM_getValue("custom_" + k, ""));
if (result != null) GM_setValue("custom_" + k, result);
}
function checkLinks() {
var link, text, ldnc, lnc, ldpc, lpc, num, digCurFound, linkNumber, found, tmpNode;
var regexp = new RegExp();
// 查找相应的链接
var links = document.getElementsByTagName('A');
for (var i = 0; i < links.length; i++) {
link = links[i];
// 跳过不起作用的链接
if (!link.offsetParent || link.offsetWidth == 0 || link.offsetHeight == 0 || !link.hasAttribute("href") && !link.hasAttribute("onclick"))
continue;
// 跳过日历
if (/(?:^|\s)(?:monthlink|weekday|day|day[\-_]\S+)(?:\s|$)/i.test(link.className))
continue;
if (/^nextlink/i.test(link.id) || /^linknext/i.test(link.id) ||
/(^|\s)nextlink/i.test(link.className) || /(^|\s)linknext/i.test(link.className))
next.link = link;
if (/^prev(ious)?link/i.test(link.id) || /^linkprev(ious)?/i.test(link.id) ||
/(^|\s)prev(ious)?link/i.test(link.className) || /(^|\s)linkprev(ious)?/i.test(link.className))
previous.link = link;
text = link.textContent;
if (!text) {
// 若链接中没有文字，则检查图片的alt属性、链接或图片的title
for each (var img in link.childNodes) {
if (img.localName == "IMG") {
text = img.alt || link.title || img.title;
if (text) break;
}
}
if (!text) continue;
}
text = text.toLowerCase().replace(/^\s+|\s+$/g, "");
if (!text) continue;
// 纯数字链接
if (isDigital(text)) {
if (digCurFound) continue;
linkNumber = parseInt(RegExp.$1);
// 检测下一个位置是否是当前页面的页数
if ((tmpNode = getCurrentPageNode(link, linkNumber, 1)) && tmpNode) {
digCurFound = true;
previous.link = link;
previous.found = true;
previous.pos = i;
// 再检测下下一个位置是否是“下一页”的链接
if (getNextLink(tmpNode, linkNumber+2, true))
break;
// 设置往后的30个位置以内为“下一页”的可能链接，以提高检测速度。
ldnc = i + 30;
}
// 检测上一个位置是否是当前页面的页数
else if (getCurrentPageNode(link, linkNumber, -1)) {
digCurFound = true;
next.link = link;
next.found = true;
next.pos = i;
ldpc = i + 30;
continue;
}
// 检测自身是否是当前页面的页数
else if (getCurrentPageNode(link, linkNumber, 0)) {
digCurFound = true;
// 再检测下一个位置是否是“下一页”的链接
if (getNextLink(link, linkNumber+1, true)) {
next.pos = i;
ldpc = i + 30;
continue;
}
// 设置往后的30个位置以内为“下一页”的可能链接，以提高检测速度。
ldnc = i + 30;
}
continue;
}
else {
found = false;
if (!next.found && !(lnc < i) && !(ldnc < i)) {
for (var j = 0; j < next.texts.length; j++) {
if (regexp.compile(preRegexp + next.texts[j] + nextRegexp, 'i').test(text)) {
// 检测到“下一页”的链接
found = true;
next.link = link;
num = next.miswords[next.texts[j]];
// 若“下一页”的词语有可能会误判时，最多再检测预定个数的链接。
(num == null) ? next.found = true : lnc = i + num;
break;
}
}
}
if (!next.digital && lnc < i) next.found = true;
if (!found && !previous.found && !(lpc < i) && !(ldpc < i)) {
for (var j = 0; j < previous.texts.length; j++) {
if (regexp.compile(preRegexp + previous.texts[j] + nextRegexp, 'i').test(text)) {
// 检测到“上一页”的链接
previous.link = link;
num = previous.miswords[previous.texts[j]];
// 若“上一页”的词语有可能会误判时，最多再检测预定个数的链接。
(num == null) ? previous.found = true : lpc = i + num;
break;
}
}
}
if (lpc < i) previous.found = true;
// 重新设置纯数字链接未被检查
digCurFound = null;
}
// 找到“上一页”和“下一页”的链接或找到其中一个而另一个超过规定范围没找到，将不再查找。
if (next.found && previous.found ||
next.found && i > next.pos + 30 ||
previous.found && i > previous.pos + 30)
break;
}
// 通过以上方法没有找到“下一页”的，把第一次检测出来的数字1的链接作为当前页，2作为“下一页”。
if (!next.found /*&& !next.link*/ && next.digital)
next.link = next.digital;
if (next.link) next.found = true;
if (previous.link) previous.found = true;
if (!next.found && !previous.found)
checkButtons();
}
// 检查翻页按钮
function checkButtons() {
var but, text, found;
var regexp = new RegExp();
var buts = document.getElementsByTagName('INPUT');
for (var i = 0; i < buts.length; i++) {
but = buts[i];
if (but.hasAttribute("disabled") || !(/^button$/i.test(but.type) && but.getAttribute("onclick"))) continue;
text = but.value;
found = false;
if (!next.found) {
for (var j = 0; j < next.texts.length; j++) {
if (regexp.compile(preRegexp + next.texts[j] + nextRegexp, 'i').test(text)) {
// 检测到“下一页”的按钮
next.link = but;
next.found = found = true;
break;
}
}
}
if (!found && !previous.found) {
for (var j = 0; j < previous.texts.length; j++) {
if (regexp.compile(preRegexp + previous.texts[j] + nextRegexp, 'i').test(text)) {
// 检测到“上一页”的按钮
previous.link = but;
previous.found = true;
break;
}
}
}
if (next.found && previous.found) break;
}
}
// 取得相邻的纯数字节点，type: 1 下一个；-1 上一个
function getSiblingNode(node, type) {
if (!node) return null;
node = getSibling(node, type);
while (node && (node.nodeName == "#coment" ||
(/^\s*[\]］】]?[,\|]?\s*[\[［【]?\s*$/.test(node.textContent))))
node = getSibling(node, type);
return node;
}
function getSibling(aNode, type) {
if (!aNode) return null;
if (isOnlyNode(aNode)) {
try {
aNode = (type == 1 ? aNode.parentNode.nextSibling : aNode.parentNode.previousSibling);
if (skipNode(aNode))
aNode = (type == 1 ? aNode.nextSibling : aNode.previousSibling);
aNode = aNode.childNodes[0];
if (skipNode(aNode))
aNode = aNode.nextSibling;
}
catch (e) {return null;}
}
else {
aNode = (type == 1 ? aNode.nextSibling : aNode.previousSibling);
}
return aNode;
}
function isOnlyNode(n) {
return !n.nextSibling && !n.previousSibling ||
!n.nextSibling && skipNode(n.previousSibling) && !n.previousSibling.previousSibling ||
!n.previousSibling && skipNode(n.nextSibling) && !n.nextSibling.nextSibling ||
skipNode(n.previousSibling) && !n.previousSibling.previousSibling &&
skipNode(n.nextSibling) && !n.nextSibling.nextSibling;
}
function skipNode(sNode) {
return sNode && /*sNode.nodeName == "#text" &&*/ (/^\s*$/.test(sNode.textContent));
}
// 检测是否有下一页的纯数字链接，number:页数
function getNextLink(node, number, set) {
var tNode = getSiblingNode(node, 1);
if (tNode && tNode.nodeName == "A" && isDigital(tNode.textContent)) {
if (RegExp.$1 == number) {
// 找到纯数字链接
if (set) {
next.link = tNode;
next.found = true;
}
return tNode;
}
}
return null;
}
function isDigital(str, t) {
str = str.replace(/^\s+|\s+$/g, "");
if (t == -1)
str = str.split(/\s+/).pop();
else if (t == 1)
str = str.split(/\s+/)[0];
return (/^(\d+)$/.test(str)) ||
(/^\[\s?(\d+)\s?\]$/.test(str)) ||
(/^【\s?(\d+)\s?】$/.test(str)) ||
(/^［\s?(\d+)\s?］$/.test(str)) ||
(/^<\s?(\d+)\s?>$/.test(str));
}
// 判断是否是当前页面的数字，type:-1,0,1 分别是要判别的上一个、当前、下一个节点
function getCurrentPageNode(node, linkNum, type) {
var tNode;
if (type == 0) {
tNode = getSiblingNode(node, 1) || getSiblingNode(node, -1);
if (!tNode) return null;
if (!node.hasAttribute("onclick") && node.href != tNode.href &&
(!node.hasAttribute("href") && isDigital(node.textContent, type) ||
!(/\/#[^\/]+$/.test(node.href)) && node.href == location.href && isDigital(node.textContent, type))) {
if (linkNum > 0 && RegExp.$1 == linkNum) return node;
}
// 某些论坛处在第一页时，实际链接和当前页链接不符，只有和其余纯数字链接的结构或颜色不同时，
// 才使用纯数字的“2”作为“下一页”的链接。
else if (!next.digital && (/^\s*[\[［【]?1[\]］】]?\s*$/.test(node.textContent))) {
var two = getNextLink(node, 2);
if (two && difDigital(node, two))
next.digital = two;
}
}
else {
tNode = getSiblingNode(node, type);
if (!tNode) return null;
if (tNode.nodeName != "A" && isDigital(tNode.textContent, type) ||
tNode.nodeName == "A" && !tNode.hasAttribute("onclick") && node.href != tNode.href &&
(!tNode.hasAttribute("href") && isDigital(tNode.textContent, type) ||
!(/\/#[^\/]+$/.test(tNode.href)) && tNode.href == location.href && isDigital(tNode.textContent, type))) {
var n = linkNum + type;
if (n > 0 && RegExp.$1 == n) {
if (next.digital) next.digital = null;
return tNode;
}
}
}
return null;
}
function difDigital(node1, node2) {
if (getStructure(node1) == getStructure(node2) && getStyleColor(node1) == getStyleColor(node2))
return false;
return true;
}
function getStructure(aNode) {
return aNode.innerHTML.replace(/\d+/, "");
}
function getStyleColor(aNode) {
return document.defaultView.getComputedStyle(aNode, null).getPropertyValue("color");
}
function openLink(linkNode) {
if (!linkNode) return;
var hf = linkNode.getAttribute("href");
if (!linkNode.hasAttribute("onclick") && hf && !(/^#/.test(hf)) && linkNode.href != location.href) {
cleanVars();
location.assign(linkNode.href);
}
else {
// 有些4D鼠标摆动一下滚轮会触发多下的方向键，故增设一个延迟参数，使它只翻一页。
delay = true;
setTimeout(cleanVars, 300);
var e = document.createEvent("MouseEvents");
e.initMouseEvent("click", 1, 1, window, 1, 0,0,0,0,0,0,0,0,0, linkNode);
linkNode.dispatchEvent(e);
}
}
function cleanVars() {
try {
checked = false;
delay = false;
next.link = next.found = next.digital = null;
previous.link = previous.found = previous.digital = null;
delete next.pos;
delete previous.pos;
} catch(e) {}
}
function onKeyDown(event) {
// 不是左右方向建被按下或不到延迟时间则退出
if (event.ctrlKey || event.shiftKey || event.altKey || event.metaKey || event.keyCode != 37 && event.keyCode != 39 || delay)
return
// 确保光标不是定位在文字输入框或选择框
var localName = event.target.localName;
if (localName == 'TEXTAREA' || localName == 'INPUT' || localName == 'SELECT')
return;
// 检查过且没有发现上一页或下一页的连接，则退出
if (checked && !next.found && !previous.found)
return;
if (!checked) {
checkLinks();
checked = true;
}
if (event.keyCode == 37 && previous.found) {
// 左方向键，跳到“上一页”
openLink(previous.link)
}
else if (event.keyCode == 39 && next.found) {
// 右方向键，跳到“下一页”
openLink(next.link)
}
}
window.addEventListener("keydown", function(e){onKeyDown(e)}, true);
})();
