+/*
+;;; Mudsync --- Live hackable MUD
+;;; Copyright © 2017 Christopher Allan Webber <cwebber@dustycloud.org>
+;;;
+;;; This file is part of Mudsync.
+;;;
+;;; Mudsync is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; Mudsync is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;;; General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with Mudsync. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+function scrollDown() {
+ var stream_metabox = document.getElementById("stream-metabox");
+ stream_metabox.scrollTop = stream_metabox.scrollHeight;
+}
+
+function withMaybeScroll(thunk) {
+ var stream_metabox = document.getElementById("stream-metabox");
+ var should_scroll = false;
+ // if within a reasonable threshold, we scroll
+ if((stream_metabox.scrollHeight - stream_metabox.offsetHeight)
+ - stream_metabox.scrollTop <= 50) {
+ should_scroll = true;
+ }
+ thunk();
+ if (should_scroll) {
+ stream_metabox.scrollTop = stream_metabox.scrollHeight;
+ }
+}
+
+
+function displayMessage(data, self_sent) {
+ var new_entry = document.createElement("div");
+ withMaybeScroll(
+ function () {
+ if (self_sent) {
+ new_entry.setAttribute("class", "stream-entry self-sent");
+ document.getElementById("main-input").value = "";
+ } else {
+ new_entry.setAttribute("class", "stream-entry");
+ }
+ new_entry.innerHTML = data;
+ document.getElementById("stream").appendChild(new_entry);
+ });