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mirror of https://github.com/vichan-devel/vichan.git synced 2024-12-11 07:16:10 +01:00
vichan/js/post-filter.js
2015-02-26 02:39:34 +08:00

821 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
}
function addFilter(type, value, useRegex) {
var list = getList();
var filter = list.generalFilter;
var obj = {
type: type,
value: value,
regex: useRegex
};
for (var i=0; i<filter.length; i++) {
if (filter[i].type == type && filter[i].value == value && filter[i].regex == useRegex)
return;
}
filter.push(obj);
setList(list);
drawFilterList();
}
function removeFilter(type, value, useRegex) {
var list = getList();
var filter = list.generalFilter;
for (var i=0; i<filter.length; i++) {
if (filter[i].type == type && filter[i].value == value && filter[i].regex == useRegex) {
filter.splice(i, 1);
break;
}
}
setList(list);
drawFilterList();
}
var blacklist = {
add: {
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: {
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).data('hidden'))
return;
$(ele).data('hidden', true);
if ($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);
$(ele).data('hidden', false);
if ($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 initPostMenu(pageData) {
var submenu;
Menu.add_item('filter-menu-hide', 'Hide post');
Menu.add_item('filter-menu-unhide', 'Unhide post');
submenu = Menu.add_submenu('filter-menu-add', 'Add filter');
submenu.add_item('filter-add-post-plus', 'Post +', 'Hide post and all replies');
submenu.add_item('filter-add-id', 'ID');
submenu.add_item('filter-add-id-plus', 'ID +', 'Hide ID and all replies');
submenu.add_item('filter-add-name', 'Name');
submenu.add_item('filter-add-trip', 'Tripcode');
submenu = Menu.add_submenu('filter-menu-remove', 'Remove filter');
submenu.add_item('filter-remove-id', 'ID');
submenu.add_item('filter-remove-name', 'Name');
submenu.add_item('filter-remove-trip', 'Tripcode');
Menu.onclick(function (e, $buffer) {
var ele = e.target.parentElement.parentElement;
var $ele = $(ele);
var threadId = $ele.parent().attr('id').replace('thread_', '');
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 = $ele.find('.trip').text();
}
/* display logic and bind click handlers
*/
// unhide button
if ($ele.data('hidden')) {
$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);
});
$buffer.find('#filter-menu-hide').addClass('hidden');
} else {
$buffer.find('#filter-menu-unhide').addClass('hidden');
$buffer.find('#filter-menu-hide').click(function () {
blacklist.add.post(pageData.boardId, threadId, postId, false);
});
}
// post id
if (!$ele.data('hiddenByPost')) {
$buffer.find('#filter-add-post-plus').click(function () {
blacklist.add.post(pageData.boardId, threadId, postId, true);
});
} else {
$buffer.find('#filter-add-post-plus').addClass('hidden');
}
// UID
if (pageData.hasUID && !$ele.data('hiddenByUid')) {
$buffer.find('#filter-add-id').click(function () {
blacklist.add.uid(pageData.boardId, threadId, postUid, false);
});
$buffer.find('#filter-add-id-plus').click(function () {
blacklist.add.uid(pageData.boardId, threadId, postUid, true);
});
$buffer.find('#filter-remove-id').addClass('hidden');
} else if (pageData.hasUID) {
$buffer.find('#filter-remove-id').click(function () {
blacklist.remove.uid(pageData.boardId, threadId, postUid);
});
$buffer.find('#filter-add-id').addClass('hidden');
$buffer.find('#filter-add-id-plus').addClass('hidden');
} else {
// board doesn't use UID
$buffer.find('#filter-add-id').addClass('hidden');
$buffer.find('#filter-add-id-plus').addClass('hidden');
$buffer.find('#filter-remove-id').addClass('hidden');
}
// name
if (!pageData.forcedAnon && !$ele.data('hiddenByName')) {
$buffer.find('#filter-add-name').click(function () {
addFilter('name', postName, false);
});
$buffer.find('#filter-remove-name').addClass('hidden');
} else if (!pageData.forcedAnon) {
$buffer.find('#filter-remove-name').click(function () {
removeFilter('name', postName, false);
});
$buffer.find('#filter-add-name').addClass('hidden');
} else {
// board has forced anon
$buffer.find('#filter-remove-name').addClass('hidden');
$buffer.find('#filter-add-name').addClass('hidden');
}
// tripcode
if (!pageData.forcedAnon && !$ele.data('hiddenByTrip') && postTrip !== '') {
$buffer.find('#filter-add-trip').click(function () {
addFilter('trip', postTrip, false);
});
$buffer.find('#filter-remove-trip').addClass('hidden');
} else if (!pageData.forcedAnon && postTrip !== '') {
$buffer.find('#filter-remove-trip').click(function () {
removeFilter('trip', postTrip, false);
});
$buffer.find('#filter-add-trip').addClass('hidden');
} else {
// board has forced anon
$buffer.find('#filter-remove-trip').addClass('hidden');
$buffer.find('#filter-add-trip').addClass('hidden');
}
/* hide sub menus if all items are hidden
*/
if (!$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) {
$buffer.find('#filter-menu-add').addClass('hidden');
}
});
}
/*
* hide/unhide thread on index view
*/
function quickToggle(ele, threadId, pageData) {
/*if ($(ele).find('.hide-thread-link').length)
$('.hide-thread-link').remove();*/
if ($(ele).hasClass('op') && !$(ele).find('.hide-thread-link').length) {
$('<a class="hide-thread-link" style="float:left;margin-right:5px" href="javascript:void(0)">[' + ($(ele).data('hidden') ? '+' : '&ndash;') + ']</a>')
.insertBefore($(ele).find(':not(h2,h2 *):first'))
.click(function() {
var postId = $(ele).find('.post_no').not('[id]').text();
var hidden = $(ele).data('hidden');
if (hidden) {
blacklist.remove.post(pageData.boardId, threadId, postId, false);
$(this).html('[&ndash;]');
} else {
blacklist.add.post(pageData.boardId, threadId, postId, false);
$(this).text('[+]');
}
});
}
}
/*
* 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 = $post.find('.post_no').not('[id]').text();
var name, trip, uid, subject, comment;
var i, length, array, rule, pattern; // temp variables
var boardId = pageData.boardId;
var localList = pageData.localList;
var noReplyList = pageData.noReplyList;
var hasUID = pageData.hasUID;
var forcedAnon = pageData.forcedAnon;
var hasTrip = ($post.find('.trip').length > 0);
var hasSub = ($post.find('.subject').length > 0);
$post.data('hidden', false);
$post.data('hiddenByUid', false);
$post.data('hiddenByPost', false);
$post.data('hiddenByName', false);
$post.data('hiddenByTrip', false);
$post.data('hiddenBySubject', false);
$post.data('hiddenByComment', false);
// 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) {
$post.data('hiddenByUid', true);
localList.push(postId);
if (array[i].hideReplies) noReplyList.push(postId);
break;
}
}
}
// match localList
if (localList.length) {
if ($.inArray(postId, localList) != -1) {
if ($post.data('hiddenByUid') !== true) $post.data('hiddenByPost', true);
hide(post);
}
}
// matches generalFilter
if (!forcedAnon)
name = (typeof $post.find('.name').contents()[0] == 'undefined') ? '' : $post.find('.name').contents()[0].nodeValue.trim();
if (!forcedAnon && hasTrip)
trip = $post.find('.trip').text();
if (hasSub)
subject = ' '+ $post.find('.subject').text() +' ';
array = $post.find('.body').contents().filter(function () {if ($(this).text() !== '') return true;}).toArray();
array = $.map(array, function (ele) {
return $(ele).text();
});
comment = ' '+ array.join(' ') +' ';
for (i = 0, length = list.generalFilter.length; i < length; i++) {
rule = list.generalFilter[i];
if (rule.regex) {
pattern = new RegExp(rule.value);
switch (rule.type) {
case 'name':
if (!forcedAnon && pattern.test(name)) {
$post.data('hiddenByName', true);
hide(post);
}
break;
case 'trip':
if (!forcedAnon && pattern.test(trip)) {
$post.data('hiddenByTrip', true);
hide(post);
}
break;
case 'sub':
if (hasSub && pattern.test(subject)) {
$post.data('hiddenBySubject', true);
hide(post);
}
break;
case 'com':
if (pattern.test(comment)) {
$post.data('hiddenByComment', true);
hide(post);
}
break;
}
} else {
switch (rule.type) {
case 'name':
if (!forcedAnon && rule.value == name) {
$post.data('hiddenByName', true);
hide(post);
}
break;
case 'trip':
if (!forcedAnon && hasTrip && rule.value == trip) {
$post.data('hiddenByTrip', true);
hide(post);
}
break;
case 'sub':
if (hasSub && subject.indexOf(' '+ rule.value +' ') != -1) {
$post.data('hiddenBySubject', true);
hide(post);
}
break;
case 'com':
if (comment.indexOf(' '+ rule.value +' ') != -1) {
$post.data('hiddenByComment', true);
hide(post);
}
break;
}
}
}
// 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 ($.inArray(replyId, noReplyList) != -1) {
hide(post);
}
});
// post didn't match any filters
if (!$post.data('hidden')) {
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 = $thread.children('.op')[0];
var i, array; // temp variables
// add posts to localList and noReplyList
if (typeof list.postFilter[pageData.boardId] != 'undefined' && typeof list.postFilter[pageData.boardId][threadId] != 'undefined') {
array = list.postFilter[pageData.boardId][threadId];
for (i=0; i<array.length; i++) {
if ( typeof array[i].post == 'undefined')
continue;
pageData.localList.push(array[i].post);
if (array[i].hideReplies) pageData.noReplyList.push(array[i].post);
}
}
// run filter on OP
filter(op, threadId, pageData);
quickToggle(op, threadId, pageData);
// iterate filter over each post
if (!$(op).data('hidden') || active_page == 'thread') {
$thread.find('.reply').not('.hidden').each(function () {
filter(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');
$ele.remove();
cssString = '\n/*** Generated by post-filter ***/\n' +
'#filter-control input[type=text] {width: 130px;}' +
'#filter-control input[type=checkbox] {vertical-align: middle;}' +
'#filter-control #clear {float: right;}\n' +
'#filter-container {margin-top: 20px; border: 1px solid; height: 270px; overflow: auto;}\n' +
'#filter-list {width: 100%; border-collapse: collapse;}\n' +
'#filter-list th {text-align: center; height: 20px; font-size: 14px; border-bottom: 1px solid;}\n' +
'#filter-list th:nth-child(1) {text-align: center; width: 70px;}\n' +
'#filter-list th:nth-child(2) {text-align: left;}\n' +
'#filter-list th:nth-child(3) {text-align: center; width: 58px;}\n' +
'#filter-list tr:not(#header) {height: 22px;}\n' +
'#filter-list tr:nth-child(even) {background-color:rgba(255, 255, 255, 0.5);}\n' +
'#filter-list td:nth-child(1) {text-align: center; width: 70px;}\n' +
'#filter-list td:nth-child(3) {text-align: center; width: 58px;}\n' +
'#confirm {text-align: right; margin-bottom: -18px; padding-top: 2px; font-size: 14px; color: #FF0000;}';
if (!$('style.generated-css').length) $('<style class="generated-css">').appendTo('head');
$('style.generated-css').html($('style.generated-css').html() + cssString);
}
function drawFilterList() {
var list = getList().generalFilter;
var $ele = $('#filter-list');
var $row, i, length, obj, val;
var typeName = {
name: 'name',
trip: 'tripcode',
sub: 'subject',
com: 'comment'
};
$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];
// display formatting
val = (obj.regex) ? '/'+ obj.value +'/' : obj.value;
$row = $('<tr>');
$row.append(
'<td>'+ typeName[obj.type] +'</td>',
'<td>'+ val +'</td>',
$('<td>').append(
$('<a>').html('X')
.addClass('del-btn')
.attr('href', '#')
.data('type', obj.type)
.data('val', obj.value)
.data('useRegex', obj.regex)
)
);
$ele.append($row);
}
}
function initOptionsPanel() {
if (window.Options && !Options.get_tab('filter')) {
Options.add_tab('filter', 'list', 'Filters');
Options.extend_tab('filter',
'<div id="filter-control">' +
'<select>' +
'<option value="name">Name</option>' +
'<option value="trip">Tripcode</option>' +
'<option value="sub">Subject</option>' +
'<option value="com">Comment</option>' +
'</select>' +
'<input type="text">' +
'<input type="checkbox">' +
'regex ' +
'<button id="set-filter">Add</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', '#set-filter', function () {
var type = $('#filter-control select option:selected').val();
var value = $('#filter-control input[type=text]').val();
var useRegex = $('#filter-control input[type=checkbox]').prop('checked');
//clear the input form
$('#filter-control input[type=text]').val('');
addFilter(type, value, useRegex);
drawFilterList();
});
$('#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({
generalFilter: [],
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.data('type');
var val = $ele.data('val');
var useRegex = $ele.data('useRegex');
removeFilter(type, val, useRegex);
});
}
}
/*
* clear out pruned threads
*/
function purge() {
var list = getList();
var board, thread, boardId, threadId;
var deferred;
var requestArray = [];
var successHandler = function (boardId, threadId) {
return function () {
// thread still alive, keep it in the list and increase the time between checks.
var list = getList();
var thread = list.nextPurge[boardId][threadId];
thread.timestamp = timestamp();
thread.interval = Math.floor(thread.interval * 1.5);
setList(list);
};
};
var errorHandler = function (boardId, threadId) {
return function (xhr) {
if (xhr.status == 404) {
var list = getList();
delete list.nextPurge[boardId][threadId];
delete list.postFilter[boardId][threadId];
if ($.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({
generalFilter: [],
postFilter: {},
nextPurge: {},
lastPurge: timestamp()
});
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Migrate from previous version of post filter
* Remember to remove next time anyone touches this file
*/
(function () {
var list = getList();
if (typeof list.nameFilter != 'undefined') {
var filter = list.nameFilter;
list.generalFilter = [];
for (var i = 0; i < filter.length; i++) {
var obj = filter[i];
for (var key in obj) {
list.generalFilter.push({
type: key,
value: obj[key],
regex: false
});
}
}
delete list.nameFilter;
localStorage.postFilter = JSON.stringify(list);
}
})();
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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();
initPostMenu(pageData);
filterPage(pageData);
// on new posts
$(document).on('new_post', function (e, post) {
var threadId;
if ($(post).hasClass('reply')) {
threadId = $(post).parent().attr('id').replace('thread_', '');
} else {
threadId = $(post).attr('id').replace('thread_', '');
}
filter(post, threadId, pageData);
quickToggle(post, threadId, pageData);
});
$(document).on('filter_page', function () {
filterPage(pageData);
});
// clear out the old threads
purge();
}
init();
});
}