1
0
mirror of https://github.com/vichan-devel/vichan.git synced 2024-12-24 13:24:56 +01:00
vichan/js/auto-reload.js
2014-10-07 05:40:37 +02:00

238 lines
6.4 KiB
JavaScript

/*
* auto-reload.js
* https://github.com/savetheinternet/Tinyboard/blob/master/js/auto-reload.js
*
* Brings AJAX to Tinyboard.
*
* Released under the MIT license
* Copyright (c) 2012 Michael Save <savetheinternet@tinyboard.org>
* Copyright (c) 2013-2014 Marcin Łabanowski <marcin@6irc.net>
* Copyright (c) 2013 undido <firekid109@hotmail.com>
* Copyright (c) 2014 Fredrick Brennan <admin@8chan.co>
*
* Usage:
* $config['additional_javascript'][] = 'js/jquery.min.js';
* //$config['additional_javascript'][] = 'js/titlebar-notifications.js';
* $config['additional_javascript'][] = 'js/auto-reload.js';
*
*/
auto_reload_enabled = true; // for watch.js to interop
$(document).ready(function(){
if($('div.banner').length == 0)
return; // not index
if($(".post.op").size() != 1)
return; //not thread page
var countdown_interval;
// Add an update link
$('.boardlist.bottom').prev().after("<span id='updater'><a href='#' id='update_thread' style='padding-left:10px'>["+_("Update")+"]</a> (<input type='checkbox' id='auto_update_status' checked> "+_("Auto")+") <span id='update_secs'></span></span>");
// Grab the settings
var settings = new script_settings('auto-reload');
var poll_interval_mindelay = settings.get('min_delay_bottom', 5000);
var poll_interval_maxdelay = settings.get('max_delay', 600000);
var poll_interval_errordelay = settings.get('error_delay', 30000);
// number of ms to wait before reloading
var poll_interval_delay = poll_interval_mindelay;
var poll_current_time = poll_interval_delay;
var end_of_page = false;
var new_posts = 0;
var first_new_post = null;
var title = document.title;
if (typeof update_title == "undefined") {
var update_title = function() {
if (new_posts) {
document.title = "("+new_posts+") "+title;
} else {
document.title = title;
}
};
}
if (typeof add_title_collector != "undefined")
add_title_collector(function(){
return new_posts;
});
var window_active = true;
$(window).focus(function() {
window_active = true;
recheck_activated();
// Reset the delay if needed
if(settings.get('reset_focus', true)) {
poll_interval_delay = poll_interval_mindelay;
}
});
$(window).blur(function() {
window_active = false;
});
$('#auto_update_status').click(function() {
if($("#auto_update_status").is(':checked')) {
auto_update(poll_interval_mindelay);
} else {
stop_auto_update();
$('#update_secs').text("");
}
});
var decrement_timer = function() {
poll_current_time = poll_current_time - 1000;
$('#update_secs').text(poll_current_time/1000);
if (poll_current_time <= 0) {
poll(manualUpdate = false);
}
}
var recheck_activated = function() {
if (new_posts && window_active &&
$(window).scrollTop() + $(window).height() >=
$('div.boardlist.bottom').position().top) {
new_posts = 0;
}
update_title();
first_new_post = null;
};
// automatically updates the thread after a specified delay
var auto_update = function(delay) {
clearInterval(countdown_interval);
poll_current_time = delay;
countdown_interval = setInterval(decrement_timer, 1000);
$('#update_secs').text(poll_current_time/1000);
}
var stop_auto_update = function() {
clearInterval(countdown_interval);
}
var epoch = (new Date).getTime();
var epochold = epoch;
var timeDiff = function (delay) {
if((epoch-epochold) > delay) {
epochold = epoch = (new Date).getTime();
return true;
}else{
epoch = (new Date).getTime();
return;
}
}
var poll = function(manualUpdate) {
stop_auto_update();
$('#update_secs').text(_("Updating..."));
$.ajax({
url: document.location,
success: function(data) {
var loaded_posts = 0; // the number of new posts loaded in this update
$(data).find('div.post.reply').each(function() {
var id = $(this).attr('id');
if($('#' + id).length == 0) {
if (!new_posts) {
first_new_post = this;
}
$(this).insertAfter($('div.post:last').next()).after('<br class="clear">');
new_posts++;
loaded_posts++;
$(document).trigger('new_post', this);
recheck_activated();
}
});
time_loaded = Date.now(); // interop with watch.js
if ($('#auto_update_status').is(':checked')) {
// If there are no new posts, double the delay. Otherwise set it to the min.
if(loaded_posts == 0) {
// if the update was manual, don't increase the delay
if (manualUpdate == false) {
poll_interval_delay *= 2;
// Don't increase the delay beyond the maximum
if(poll_interval_delay > poll_interval_maxdelay) {
poll_interval_delay = poll_interval_maxdelay;
}
}
} else {
poll_interval_delay = poll_interval_mindelay;
}
auto_update(poll_interval_delay);
} else {
// Decide the message to show if auto update is disabled
if (loaded_posts > 0)
$('#update_secs').text(fmt(_("Thread updated with {0} new post(s)"), [loaded_posts]));
else
$('#update_secs').text(_("No new posts found"));
}
},
error: function(xhr, status_text, error_text) {
if (status_text == "error") {
if (error_text == "Not Found") {
$('#update_secs').text(_("Thread deleted or pruned"));
$('#auto_update_status').prop('checked', false);
$('#auto_update_status').prop('disabled', true); // disable updates if thread is deleted
return;
} else {
$('#update_secs').text("Error: "+error_text);
}
} else if (status_text) {
$('#update_secs').text(_("Error: ")+status_text);
} else {
$('#update_secs').text(_("Unknown error"));
}
// Keep trying to update
if ($('#auto_update_status').is(':checked')) {
poll_interval_delay = poll_interval_errordelay;
auto_update(poll_interval_delay);
}
}
});
return false;
};
$(window).scroll(function() {
recheck_activated();
// if the newest post is not visible
if($(this).scrollTop() + $(this).height() <
$('div.post:last').position().top + $('div.post:last').height()) {
end_of_page = false;
return;
} else {
if($("#auto_update_status").is(':checked') && timeDiff(poll_interval_mindelay)) {
poll(manualUpdate = true);
}
end_of_page = true;
}
});
$('#update_thread').on('click', function() { poll(manualUpdate = true); return false; });
if($("#auto_update_status").is(':checked')) {
auto_update(poll_interval_delay);
}
});