mark posts as read (помечает посты как прочитанные)
目前为
// ==UserScript==
// @name vk.com mark as read
// @namespace limizin.userscripts
// @description mark posts as read (помечает посты как прочитанные)
// @include https://vk.com*
// @version 2.3.1
// @grant GM_setValue
// @grant GM_getValue
// ==/UserScript==
(function() {
var postwall = document.getElementById('page_wall_posts');
if (!postwall)
return;
globals = {};
globals.firefox = navigator.userAgent.toLowerCase().indexOf('firefox')!=-1;
globals.postwall = postwall;
globals.storageKey = 'usernameReadPost/' + hashCode(location.pathname) + hashCode(reverse(location.pathname));
globals.top_shadow_post_id = null;
globals.shadowMark = false;
globals.maxAutoscrollPosts = 150;
globals.autoscrolling = false;
globals.scrollOnLoad=false;
//add styles
if (!document.querySelector('style#usernameReadPost')) {
var head = document.querySelector('head');
stl = head.appendChild(document.createElement('style'));
stl.id = 'usernameReadPost';
stl.innerHTML = `
.usernameReadPost, .usernameReadPost ~ * {background-color: silver !important;}
.usernameReadBtn {background-color: #507299; color: #ffffff; border: thin solid #C4C4C4; cursor: pointer;}
.usernameReadPostBtn {top:0; right:0; position: absolute;}
@keyframes blink {
0% { color: white; }
100% { color: #507299; }
}
@-webkit-keyframes blink {
0% { color: white; }
100% { color: #507299; }
}
.blink {
-webkit-animation: blink 500ms linear infinite;
-moz-animation: blink 500ms linear infinite;
animation: blink 500ms linear infinite;
}`;
}
//scroll section
var buttonBlock = document.createElement('div');
buttonBlock.style.display = 'inline';
buttonBlock.style.marginLeft = '-58px';
buttonBlock.style.marginRight = '7px';
buttonBlock.style.marginTop = '10px';
buttonBlock.style.float = 'left';
var scrollOnLoadChBox=buttonBlock.appendChild(document.createElement('input'));
scrollOnLoadChBox.type='checkbox';
scrollOnLoadChBox.style.verticalAlign='middle';
scrollOnLoadChBox.title='autoscroll on load';
globals.scrollOnLoadChBox=scrollOnLoadChBox;
scrollOnLoadChBox.click=addEventListener('change', function(e){
globals.scrollOnLoad=globals.scrollOnLoadChBox.checked;
saveSettings();
});
var scrollToReadBtn = createButton('', scrollToRead, 'scroll to read');
scrollToReadBtn.style.width = '30px';
var scrollButtonText=scrollToReadBtn.appendChild(document.createElement('span'));
scrollButtonText.textContent='>';
globals.scrollButtonText = scrollButtonText;
globals.scrollButton = scrollToReadBtn;
buttonBlock.appendChild(scrollToReadBtn);
document.querySelector('div.head_nav_item').appendChild(buttonBlock);
//add buttons ol load
_addButtons(document.querySelectorAll('#page_wall_posts > div.post'));
loadSettings();
//shadow posts on load
if (globals.top_shadow_post_id) {
var post = document.getElementById(globals.top_shadow_post_id);
if (post) {
post.classList.add('usernameReadPost');
globals.shadowMark = true;
}
}
//wall observer
observer = new MutationObserver(
function (mutations) {
var newPosts = new Array();
mutations.forEach(function(mutation) {
if (mutation.type != 'childList')
return;
if (mutation.addedNodes) {
for (i = 0; i < mutation.addedNodes.length; i++) {
var post = mutation.addedNodes[i];
if (post.classList.contains('no_posts'))
continue;
newPosts.push(post);
}
}
});
if (newPosts) {
_addButtons(newPosts);
_shadowSubloadedPosts(newPosts);
if (globals.autoscrolling) {
scrollToRead(null);
}
}
}
);
observer.observe(globals.postwall, {
attributes: false,
childList: true,
characterData: false
});
//scroll on load
if(globals.scrollOnLoad){
scrollToRead(null);
}
function loadSettings(){
var value=GM_getValue(globals.storageKey);
if(value){
var chunks=value.split('|');
globals.top_shadow_post_id = chunks[0];
globals.scrollOnLoad=(chunks[1]=='1');
globals.scrollOnLoadChBox.checked=globals.scrollOnLoad;
}
}
function saveSettings(){
var readPostId=globals.top_shadow_post_id;
var checked=(globals.scrollOnLoad)?'1':'0';
var value=readPostId+'|'+checked;
GM_setValue(globals.storageKey, value);
}
function scrollToRead(event) {
var post = document.querySelector('div.usernameReadPost');
if (post) {
var postYOffset = post.offsetTop;
var median = window.innerHeight / 2;
var scrollTo = postYOffset - median;
if (scrollTo < 0) {
scrollTo = 0;
}
window.scrollTo(0, scrollTo);
changeSrollState(false);
} else {
if (globals.maxAutoscrollPosts >= globals.postwall.childElementCount) {
changeSrollState(true);
var prevPostsBtn = document.getElementById('wall_more_link');
if (prevPostsBtn) {
prevPostsBtn.click();
}else{
changeSrollState(false);
}
} else {
alert(globals.maxAutoscrollPosts + ' posts have been loaded. Read post not found.');
changeSrollState(false);
}
}
}
function changeSrollState(start) {
if (start) {
globals.autoscrolling = true;
globals.scrollButtonText.classList.add('blink');
globals.scrollButton.click = null;
} else {
globals.autoscrolling = false;
globals.scrollButtonText.classList.remove('blink');
globals.scrollButton.click = scrollToRead;
}
}
function _shadowSubloadedPosts(posts) {
if (globals.shadowMark || !globals.top_shadow_post_id) {
return;
}
for (var i = 0; i < posts.length; ++i) {
var post = posts[i];
var postId = post.getAttribute('id');
if (postId == globals.top_shadow_post_id) {
post.classList.add('usernameReadPost');
break;
}
}
}
function markSelectedAsRead(event) {
var xpath = './ancestor::div[contains(@class, "post") and not(@id="page_wall_posts")]';
var post = document.evaluate(xpath, event.currentTarget, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
if (post) {
globals.top_shadow_post_id=post.getAttribute('id');
saveSettings();
var prevPostsXpath = './preceding-sibling::div[contains(@class, "usernameReadPost")]';
var prevPosts = document.evaluate(prevPostsXpath, post, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
for (var i = 0; i < prevPosts.snapshotLength; i++) {
var prevPost = prevPosts.snapshotItem(i);
prevPost.classList.remove('usernameReadPost');
}
post.classList.add('usernameReadPost');
}
}
function _addButtons(posts) {
for (var i = 0; i < posts.length; ++i) {
var post = posts[i];
var btn = createButton('+', markSelectedAsRead, 'mark as read');
btn.classList.add('usernameReadPostBtn');
post.appendChild(btn);
}
} /////////// utils ///////////
function hashCode(value) {
var hash = 0;
if (value.length == 0) return hash;
for (i = 0; i < value.length; i++) {
char = value.charCodeAt(i);
hash = ((hash << 5) - hash) + char;
hash = hash & hash; // Convert to 32bit integer
}
return hash;
}
function reverse(value) {
return value.split('').reverse().join('');
}
function xpathResultToArray(xpathResult) {
var nodes = new Array();
var nextNode = xpathResult.iterateNext();
while (nextNode) {
nodes.push(nextNode);
nextNode = xpathResult.iterateNext();
}
return nodes;
}
function createButton(content, handler, title) {
var btn = document.createElement('button');
btn.textContent = content;
btn.onclick = handler;
btn.title = title;
btn.className = 'usernameReadBtn';
if (globals.firefox) {
btn.style.paddingBottom = '2px';
}
return btn;
}
})();