lainchan/js/post-filter.js
2016-05-05 12:03:24 +02:00

777 lines
24 KiB
JavaScript

if (active_page === 'thread' || active_page === 'index') {
$(document).ready(function () {
'use strict';
// returns blacklist object from storage
function getList() {
return JSON.parse(localStorage.postFilter);
}
// stores blacklist into storage and reruns the filter
function setList(blacklist) {
localStorage.postFilter = JSON.stringify(blacklist);
$(document).trigger('filter_page');
}
// unit: seconds
function timestamp() {
return Math.floor((new Date()).getTime() / 1000);
}
function initList(list, boardId, threadId) {
if (typeof list.postFilter[boardId] == 'undefined')
list.postFilter[boardId] = {};
list.nextPurge[boardId] = {};
if (typeof list.postFilter[boardId][threadId] == 'undefined') {
list.postFilter[boardId][threadId] = [];
}
list.nextPurge[boardId][threadId] = {timestamp: timestamp(), interval: 86400}; // 86400 seconds == 1 day
}
var blacklist = {
add: {
name: function (posterName) {
var list = getList();
var filter = list.nameFilter;
for (var i in filter) {
if (filter[i].name == posterName) return;
}
filter.push({
name: posterName
});
setList(list);
drawFilterList();
},
trip: function (posterTrip) {
var list = getList();
var filter = list.nameFilter;
for (var i in filter) {
if (filter[i].trip == posterTrip) return;
}
filter.push({
trip: posterTrip
});
setList(list);
drawFilterList();
},
post: function (boardId, threadId, postId, hideReplies) {
var list = getList();
var filter = list.postFilter;
initList(list, boardId, threadId);
for (var i in filter[boardId][threadId]) {
if (filter[boardId][threadId][i].post == postId) return;
}
filter[boardId][threadId].push({
post: postId,
hideReplies: hideReplies
});
setList(list);
},
uid: function (boardId, threadId, uniqueId, hideReplies) {
var list = getList();
var filter = list.postFilter;
initList(list, boardId, threadId);
for (var i in filter[boardId][threadId]) {
if (filter[boardId][threadId][i].uid == uniqueId) return;
}
filter[boardId][threadId].push({
uid: uniqueId,
hideReplies: hideReplies
});
setList(list);
}
},
remove: {
name: function (posterName) {
var list = getList();
var filter = list.nameFilter;
for (var i=0; i<filter.length; i++) {
if (filter[i].name == posterName) {
filter.splice(i, 1);
break;
}
}
setList(list);
drawFilterList();
},
trip: function (posterTrip) {
var list = getList();
var filter = list.nameFilter;
for (var i=0; i<filter.length; i++) {
if (filter[i].trip == posterTrip) {
filter.splice(i, 1);
break;
}
}
setList(list);
drawFilterList();
},
post: function (boardId, threadId, postId) {
var list = getList();
var filter = list.postFilter;
// thread already pruned
if (typeof filter[boardId] == 'undefined' || typeof filter[boardId][threadId] == 'undefined')
return;
for (var i=0; i<filter[boardId][threadId].length; i++) {
if (filter[boardId][threadId][i].post == postId) {
filter[boardId][threadId].splice(i, 1);
break;
}
}
if ($.isEmptyObject(filter[boardId][threadId])) {
delete filter[boardId][threadId];
delete list.nextPurge[boardId][threadId];
if ($.isEmptyObject(filter[boardId])) {
delete filter[boardId];
delete list.nextPurge[boardId];
}
}
setList(list);
},
uid: function (boardId, threadId, uniqueId) {
var list = getList();
var filter = list.postFilter;
// thread already pruned
if (typeof filter[boardId] == 'undefined' || typeof filter[boardId][threadId] == 'undefined')
return;
for (var i=0; i<filter[boardId][threadId].length; i++) {
if (filter[boardId][threadId][i].uid == uniqueId) {
filter[boardId][threadId].splice(i, 1);
break;
}
}
if ($.isEmptyObject(filter[boardId][threadId])) {
delete filter[boardId][threadId];
delete list.nextPurge[boardId][threadId];
if ($.isEmptyObject(filter[boardId])) {
delete filter[boardId];
delete list.nextPurge[boardId];
}
}
setList(list);
}
}
};
/*
* hide/show the specified thread/post
*/
function hide(ele) {
var $ele = $(ele);
if (ele.dataset.hidden == '1')
return;
ele.dataset.hidden = '1';
if ($ele.hasClass('op')) {
$ele.parent().find('.body, .files, .video-container').not($ele.children('.reply').children()).hide();
// hide thread replies on index view
if (active_page == 'index') $ele.parent().find('.omitted, .reply:not(.hidden), post_no, .mentioned, br').hide();
} else {
// normal posts
$ele.children('.body, .files, .video-container').hide();
}
}
function show(ele) {
var $ele = $(ele);
ele.dataset.hidden = '0';
if ($ele.hasClass('op')) {
$ele.parent().find('.body, .files, .video-container').show();
if (active_page == 'index') $ele.parent().find('.omitted, .reply:not(.hidden), post_no, .mentioned, br').show();
} else {
// normal posts
$ele.children('.body, .files, .video-container').show();
}
}
/*
* create filter menu when the button is clicked
*/
function addMenu(e, ele, threadId, pageData) {
var $ele = $(ele);
var $buffer;
var postId = $ele.find('.post_no').not('[id]').text();
if (pageData.hasUID) {
var postUid = $ele.find('.poster_id').text();
}
var postName;
var postTrip = '';
if (!pageData.forcedAnon) {
postName = (typeof $ele.find('.name').contents()[0] == 'undefined') ? '' : $ele.find('.name').contents()[0].nodeValue.trim();
postTrip = $ele.find('.trip').text();
}
// get the button's position
var pos = $(e.target).offset();
$buffer = $('<div class="filter-menu"></div>').append(
$('<ul>').append(
$('<li>', {id: 'filter-menu-unhide'}).text('Unhide post'),
$('<li>', {id: 'filter-menu-add'}).append(
$('<ul>').append(
$('<li>', {class: 'filter-post'}).text('Post'),
$('<li>', {class: 'filter-post-plus', title: 'Hide post and all replies'}).text('Post +'),
$('<li>', {class: 'filter-id'}).text('ID'),
$('<li>', {class: 'filter-id-plus', title: 'Hide ID and all replies'}).text('ID +'),
$('<li>', {class: 'filter-name'}).text('Name'),
$('<li>', {class: 'filter-trip'}).text('Tripcode')
),
'Add filter',
$('<span>', {class: 'filter-menu-arrow'}).append('»')
),
$('<li>', {id: 'filter-menu-remove'}).append(
$('<ul>').append(
$('<li>', {class: 'filter-id'}).text('ID'),
$('<li>', {class: 'filter-name'}).text('Name'),
$('<li>', {class: 'filter-trip'}).text('Tripcode')
),
'Remove filter',
$('<span>', {class: 'filter-menu-arrow'}).append('»')
)
)
);
/* display logic and bind click handlers
*/
// unhide button
if (ele.dataset.hidden == '1' && ele.dataset.hiddenByUid == '0' &&
ele.dataset.hiddenByName == '0' && ele.dataset.hiddenByTrip == '0') {
$buffer.find('#filter-menu-unhide').click(function () {
// if hidden due to post id, remove it from blacklist
// otherwise just show this post
blacklist.remove.post(pageData.boardId, threadId, postId);
show(ele);
});
} else {
$buffer.find('#filter-menu-unhide').addClass('hidden');
}
// post id
if (ele.dataset.hiddenByPost == '0') {
$buffer.find('#filter-menu-add .filter-post').click(function () {
blacklist.add.post(pageData.boardId, threadId, postId, false);
});
$buffer.find('#filter-menu-add .filter-post-plus').click(function () {
blacklist.add.post(pageData.boardId, threadId, postId, true);
});
} else {
$buffer.find('#filter-menu-add .filter-post').addClass('hidden');
$buffer.find('#filter-menu-add .filter-post-plus').addClass('hidden');
}
// UID
if (pageData.hasUID && ele.dataset.hiddenByUid == '0') {
$buffer.find('#filter-menu-add .filter-id').click(function () {
blacklist.add.uid(pageData.boardId, threadId, postUid, false);
});
$buffer.find('#filter-menu-add .filter-id-plus').click(function () {
blacklist.add.uid(pageData.boardId, threadId, postUid, true);
});
$buffer.find('#filter-menu-remove .filter-id').addClass('hidden');
} else if (pageData.hasUID) {
$buffer.find('#filter-menu-remove .filter-id').click(function () {
blacklist.remove.uid(pageData.boardId, threadId, postUid);
});
$buffer.find('#filter-menu-add .filter-id').addClass('hidden');
$buffer.find('#filter-menu-add .filter-id-plus').addClass('hidden');
} else {
// board doesn't use UID
$buffer.find('#filter-menu-add .filter-id').addClass('hidden');
$buffer.find('#filter-menu-add .filter-id-plus').addClass('hidden');
$buffer.find('#filter-menu-remove .filter-id').addClass('hidden');
}
// name
if (!pageData.forcedAnon && ele.dataset.hiddenByName == '0') {
$buffer.find('#filter-menu-add .filter-name').click(function () {
blacklist.add.name(postName);
});
$buffer.find('#filter-menu-remove .filter-name').addClass('hidden');
} else if (!pageData.forcedAnon) {
$buffer.find('#filter-menu-remove .filter-name').click(function () {
blacklist.remove.name(postName);
});
$buffer.find('#filter-menu-add .filter-name').addClass('hidden');
} else {
// board has forced anon
$buffer.find('#filter-menu-remove .filter-name').addClass('hidden');
$buffer.find('#filter-menu-add .filter-name').addClass('hidden');
}
// tripcode
if (!pageData.forcedAnon && ele.dataset.hiddenByTrip == '0' && postTrip !== '') {
$buffer.find('#filter-menu-add .filter-trip').click(function () {
blacklist.add.trip(postTrip);
});
$buffer.find('#filter-menu-remove .filter-trip').addClass('hidden');
} else if (!pageData.forcedAnon && postTrip !== '') {
$buffer.find('#filter-menu-remove .filter-trip').click(function () {
blacklist.remove.trip(postTrip);
});
$buffer.find('#filter-menu-add .filter-trip').addClass('hidden');
} else {
// board has forced anon
$buffer.find('#filter-menu-remove .filter-trip').addClass('hidden');
$buffer.find('#filter-menu-add .filter-trip').addClass('hidden');
}
/* hide sub menus if all items are hidden
*/
if (!$buffer.find('#filter-menu-remove > ul').children().not('.hidden').length) {
$buffer.find('#filter-menu-remove').addClass('hidden');
}
if (!$buffer.find('#filter-menu-add > ul').children().not('.hidden').length) {
$buffer.find('#filter-menu-add').addClass('hidden');
}
/* set menu position
*/
$buffer.css({top: pos.top + 20, left: pos.left});
/* finally append to page
*/
$('body').append($buffer);
}
/*
* add menu button to the thread/post
*/
function addMenuButton(ele, threadId, pageData) {
if ($(ele).find('.filter-btn').length)
$('.filter-btn').remove();
$(ele).find('.intro')
.append(
$('<a>', {href: '#', class: 'filter-btn', title: 'Filter menu'})
.text('▶')
.click(function (e) {
// button toggle
e.preventDefault();
// remove existing menu
$('.filter-menu').remove();
if ($(e.target).hasClass('filter-btn-open')) {
$('.filter-btn-open').removeClass('filter-btn-open');
} else {
// close previous button
$('.filter-btn-open').removeClass('filter-btn-open');
// mark the menu button as open
$(ele).find('.filter-btn').addClass('filter-btn-open');
addMenu(e, ele, threadId, pageData);
}
})
);
}
/*
* determine whether the reply post should be hidden
* - applies to all posts on page load or filtering rule change
* - apply to new posts on thread updates
* - must explicitly set the state of each attributes because filter will reapply to all posts after filtering rule change
*/
function filter(post, threadId, pageData) {
var $post = $(post);
var list = getList();
var postId = $post.find('.post_no').not('[id]').text();
var name, trip, uid;
var i, array; // temp variables
var boardId = pageData.boardId;
var localList = pageData.localList;
var noReplyList = pageData.noReplyList;
var hasUID = pageData.hasUID;
var forcedAnon = pageData.forcedAnon;
post.dataset.hidden = '0';
post.dataset.hiddenByUid = '0';
post.dataset.hiddenByPost = '0';
post.dataset.hiddenByName = '0';
post.dataset.hiddenByTrip = '0';
// add post with matched UID to localList
if (hasUID &&
typeof list.postFilter[boardId] != 'undefined' &&
typeof list.postFilter[boardId][threadId] != 'undefined') {
uid = $post.find('.poster_id').text();
array = list.postFilter[boardId][threadId];
for (i=0; i<array.length; i++) {
if (array[i].uid == uid) {
post.dataset.hiddenByUid = '1';
localList.push(postId);
if (array[i].hideReplies) noReplyList.push(postId);
break;
}
}
}
// match localList
if (localList.length) {
if ($.inArray(postId, localList) != -1) {
if (post.dataset.hiddenByUid != '1') post.dataset.hiddenByPost = '1';
hide(post);
}
}
// match poster name and tripcode
if (!forcedAnon) {
name = (typeof $post.find('.name').contents()[0] == 'undefined') ? '' : $post.find('.name').contents()[0].nodeValue.trim();
if ($(list.nameFilter).filter(function(){if (this.name == name) return true;}).length) {
post.dataset.hiddenByName = '1';
hide(post);
}
if ($post.find('.trip').length) {
trip = $post.find('.trip').text();
if ($(list.nameFilter).filter(function(){if (this.trip == trip) return true;}).length) {
post.dataset.hiddenByTrip = '1';
hide(post);
}
}
}
// check for link to filtered posts
$post.find('.body a').not('[rel="nofollow"]').each(function () {
var replyId = $(this).text().match(/^>>(\d+)$/);
if (!replyId)
return;
replyId = replyId[1];
if ($.inArray(replyId, noReplyList) != -1) {
hide(post);
}
});
// post didn't match any filters
if ((typeof post.dataset.hidden == 'undefined' || post.dataset.hidden == '0') &&
post.dataset.hiddenByUid == '0' &&
post.dataset.hiddenByUid == post.dataset.hiddenByPost == post.dataset.hiddenByName == post.dataset.hiddenByTrip) {
show(post);
}
}
/* (re)runs the filter on the entire page
*/
function filterPage(pageData) {
var list = getList();
// empty the local and no-reply list
pageData.localList = [];
pageData.noReplyList = [];
$('.thread').each(function () {
var $thread = $(this);
// disregard the hidden threads constructed by post-hover.js
if ($thread.css('display') == 'none')
return;
var threadId = $thread.attr('id').replace('thread_', '');
var op = $thread.children('.op')[0];
var i, array; // temp variables
// add posts to localList and noReplyList
if (typeof list.postFilter[pageData.boardId] != 'undefined') {
array = list.postFilter[pageData.boardId][threadId];
if (typeof array != 'undefined') {
for (i=0; i<array.length; i++) {
if ( typeof array[i].post == 'undefined')
continue;
pageData.localList.push(array[i].post);
if (array[i].hideReplies) pageData.noReplyList.push(array[i].post);
}
}
}
// run filter on OP
filter(op, threadId, pageData);
addMenuButton(op, threadId, pageData);
// iterate filter over each post
if (op.dataset.hidden != '1' || active_page == 'thread') {
$thread.find('.reply').not('.hidden').each(function () {
filter(this, threadId, pageData);
addMenuButton(this, threadId, pageData);
});
}
});
}
/*
*
*/
function initStyle() {
var $ele, cssStyle, cssString;
$ele = $('<div>').addClass('post reply').hide().appendTo('body');
cssStyle = $ele.css(['background-color', 'border-color']);
cssStyle.hoverBg = $('body').css('background-color');
$ele.remove();
cssString =
'\n/*** Generated by post-filter ***/\n' +
'.filter-menu {position: absolute; font-size: 12px; line-height: 1.3em;}\n' +
'.filter-menu ul {\n' +
' background-color: '+ cssStyle['background-color'] +'; border: 1px solid '+ cssStyle['border-color'] +'; border-right-width: 2px;\n' +
' list-style: none; padding: 0; margin: 0; white-space: nowrap;\n}\n' +
'.filter-menu li {cursor: pointer; position: relative; padding: 4px 4px; vertical-align: middle; border-bottom: 1px solid '+ cssStyle['border-color'] +'; white-space: normal; width: 90px;}\n' +
'.filter-menu li:hover {background-color: '+ cssStyle.hoverBg +';}\n' +
'.filter-menu ul ul {display: none; position: absolute;}\n' +
'.filter-menu li:hover ul {display: block; left: 100%; margin-top: -3px;}\n' +
'.filter-menu li ul li {white-space: nowrap; width: auto;}\n' +
'.filter-menu-arrow {float: right; margin-left: 10px;}\n' +
'.filter-menu.hidden, .filter-menu .hidden {display: none;}\n' +
'.filter-btn {transition: transform 0.1s; width: 15px; text-align: center; font-size: 12pt; opacity: 0.8; text-decoration: none; margin: -6px 0px; display: inline-block;}\n' +
'.filter-btn:hover {opacity: 1;}\n' +
'.filter-btn-open {transform: rotate(90deg);}\n';
cssString +=
'#filter-control #clear {float: right;}\n' +
'#filter-container {margin-top: 20px; border: 1px solid; height: 270px; overflow: auto;}\n' +
'#filter-list {width: 100%; border-collapse: collapse;}\n' +
'#filter-list th {text-align: center; height: 20px; font-size: 14px; border-bottom: 1px solid;}\n' +
'#filter-list th:nth-child(1) {text-align: center; width: 70px;}\n' +
'#filter-list th:nth-child(2) {text-align: left;}\n' +
'#filter-list th:nth-child(3) {text-align: center; width: 58px;}\n' +
'#filter-list tr:not(#header) {height: 22px;}\n' +
'#filter-list tr:nth-child(even) {background-color:rgba(255, 255, 255, 0.5);}\n' +
'#filter-list td:nth-child(1) {text-align: center; width: 70px;}\n' +
'#filter-list td:nth-child(3) {text-align: center; width: 58px;}\n' +
'#confirm {text-align: right; margin-bottom: -18px; padding-top: 2px; font-size: 14px; color: #FF0000;}';
if (!$('style.generated-css').length) $('<style class="generated-css">').appendTo('head');
$('style.generated-css').html($('style.generated-css').html() + cssString);
}
function drawFilterList() {
var list = getList().nameFilter;
var $ele = $('#filter-list');
var $row;
var type, val;
var i, length, obj;
$ele.empty();
$ele.append('<tr id="header"><th>Type</th><th>Content</th><th>Remove</th></tr>');
for (i = 0, length = list.length; i < length; i++) {
obj = list[i];
for (type in obj) {
val = obj[type];
$row = $('<tr>');
$row.append(
'<td>'+ type +'</td>',
'<td>'+ val +'</td>',
$('<td>').append(
$('<a>').html('X')
.addClass('del-btn')
.attr('href', '#')
.attr('data-type', type)
.attr('data-val', val)
)
);
$ele.append($row);
}
}
}
function initOptionsPanel() {
if (window.Options && !Options.get_tab('filter')) {
Options.add_tab('filter', 'list', 'Filters');
Options.extend_tab('filter',
'<div id="filter-control">' +
'<input id="input" type="text"></input>' +
'<button id="name">Add Name</button>' +
'<button id="trip">Add Tripcode</button>' +
'<button id="clear">Clear all filters</button>' +
'<div id="confirm" class="hidden">' +
'This will clear all filtering rules including hidden posts. <a id="confirm-y" href="#">yes</a> | <a id="confirm-n" href="#">no</a>' +
'</div>' +
'</div>' +
'<div id="filter-container"><table id="filter-list"></table></div>'
);
drawFilterList();
// control buttons
$('#filter-control').on('click', '#name', function () {
var str = $('#filter-control #input').val().trim();
$('#filter-control #input').val('');
blacklist.add.name(str);
});
$('#filter-control').on('click', '#trip', function () {
var str = $('#filter-control #input').val().trim();
$('#filter-control #input').val('');
blacklist.add.trip(str);
});
$('#filter-control').on('click', '#clear', function () {
$('#filter-control #clear').addClass('hidden');
$('#filter-control #confirm').removeClass('hidden');
});
$('#filter-control').on('click', '#confirm-y', function (e) {
e.preventDefault();
$('#filter-control #clear').removeClass('hidden');
$('#filter-control #confirm').addClass('hidden');
setList({
nameFilter: [],
postFilter: {},
nextPurge: {},
lastPurge: timestamp()
});
drawFilterList();
});
$('#filter-control').on('click', '#confirm-n', function (e) {
e.preventDefault();
$('#filter-control #clear').removeClass('hidden');
$('#filter-control #confirm').addClass('hidden');
});
// remove button
$('#filter-list').on('click', '.del-btn', function (e) {
e.preventDefault();
var $ele = $(e.target);
var type = $ele.attr('data-type');
var val = $ele.attr('data-val');
blacklist.remove[type](val);
});
}
}
/*
* clear out pruned threads
*/
function purge() {
var list = getList();
var board, thread, boardId, threadId;
var deferred;
var requestArray = [];
var successHandler = function (boardId, threadId) {
return function () {
// thread still alive, keep it in the list and increase the time between checks.
var list = getList();
var thread = list.nextPurge[boardId][threadId];
thread.timestamp = timestamp();
thread.interval = Math.floor(thread.interval * 1.5);
setList(list);
};
};
var errorHandler = function (boardId, threadId) {
return function (xhr) {
if (xhr.status == 404) {
var list = getList();
delete list.nextPurge[boardId][threadId];
delete list.postFilter[boardId][threadId];
if ($.isEmptyObject(list.nextPurge[boardId])) delete list.nextPurge[boardId];
if ($.isEmptyObject(list.postFilter[boardId])) delete list.postFilter[boardId];
setList(list);
}
};
};
if ((timestamp() - list.lastPurge) < 86400) // less than 1 day
return;
for (boardId in list.nextPurge) {
board = list.nextPurge[boardId];
for (threadId in board) {
thread = board[threadId];
if (timestamp() > (thread.timestamp + thread.interval)) {
// check if thread is pruned
deferred = $.ajax({
cache: false,
url: '/'+ boardId +'/res/'+ threadId +'.json',
success: successHandler(boardId, threadId),
error: errorHandler(boardId, threadId)
});
requestArray.push(deferred);
}
}
}
// when all requests complete
$.when.apply($, requestArray).always(function () {
var list = getList();
list.lastPurge = timestamp();
setList(list);
});
}
function init() {
if (typeof localStorage.postFilter === 'undefined') {
localStorage.postFilter = JSON.stringify({
nameFilter: [],
postFilter: {},
nextPurge: {},
lastPurge: timestamp()
});
}
var pageData = {
boardId: board_name, // get the id from the global variable
localList: [], // all the blacklisted post IDs or UIDs that apply to the current page
noReplyList: [], // any posts that replies to the contents of this list shall be hidden
hasUID: (document.getElementsByClassName('poster_id').length > 0),
forcedAnon: ($('th:contains(Name)').length === 0) // tests by looking for the Name label on the reply form
};
initStyle();
initOptionsPanel();
filterPage(pageData);
// menu close click handler
$(document).on('click', function (e){
if ($(e.target).hasClass('filter-btn'))
return;
$('.filter-menu').remove();
$('.filter-btn-open').removeClass('filter-btn-open');
});
// on new posts
$(document).on('new_post', function (e, post) {
var threadId = $(post).parent().attr('id').replace('thread_', '');
filter(post, threadId, pageData);
addMenuButton(post, threadId, pageData);
});
$(document).on('filter_page', function () {
filterPage(pageData);
});
// clear out the old threads
purge();
}
init();
});
}