hardlounge/client/js/socket-events/more.js

51 lines
1.7 KiB
JavaScript

"use strict";
const $ = require("jquery");
const socket = require("../socket");
const render = require("../render");
const chat = $("#chat");
socket.on("more", function(data) {
let chan = chat.find("#chan-" + data.chan);
const type = chan.data("type");
chan = chan.find(".messages");
// get the scrollable wrapper around messages
const scrollable = chan.closest(".chat");
const heightOld = chan.height() - scrollable.scrollTop();
// If there are no more messages to show, just hide the button and do nothing else
if (!data.messages.length) {
scrollable.find(".show-more").removeClass("show");
return;
}
// Remove the date-change marker we put at the top, because it may
// not actually be a date change now
const children = $(chan).children();
if (children.eq(0).hasClass("date-marker-container")) { // Check top most child
children.eq(0).remove();
} else if (children.eq(1).hasClass("date-marker-container")) {
// The unread-marker could be at index 0, which will cause the date-marker to become "stuck"
children.eq(1).remove();
} else if (children.eq(0).hasClass("condensed") && children.eq(0).children(".date-marker-container").eq(0).hasClass("date-marker-container")) {
children.eq(0).children(".date-marker-container").eq(0).remove();
}
// Add the older messages
const documentFragment = render.buildChannelMessages(data.chan, type, data.messages);
chan.prepend(documentFragment).end();
// restore scroll position
const position = chan.height() - heightOld;
scrollable.scrollTop(position);
if (data.messages.length !== 100) {
scrollable.find(".show-more").removeClass("show");
}
scrollable.find(".show-more-button")
.text("Show older messages")
.prop("disabled", false);
});