From 617f0b7a6dbf6b541efef09d70d9cdb0dc2ed876 Mon Sep 17 00:00:00 2001
From: iou1name <iou1name@national.shitposting.agency>
Date: Mon, 20 Aug 2018 07:23:33 -0400
Subject: [PATCH] quote linking and previewing works

---
 quest/events.py               | 18 ++++++++++++
 quest/jinja2/quest/quest.html |  2 +-
 quest/static/quest.js         | 55 +++++++++++++++++++++++++++--------
 3 files changed, 62 insertions(+), 13 deletions(-)

diff --git a/quest/events.py b/quest/events.py
index 6d27439..eea96b3 100644
--- a/quest/events.py
+++ b/quest/events.py
@@ -3,6 +3,7 @@
 Individual functions for handling WebSocket events. Gets called by the
 QuestConsumer object in consumers.py.
 """
+import re
 import time
 import types
 
@@ -23,6 +24,23 @@ def message(socket, data):
 		return
 	tags = ["b", "code", "i", "s"]
 	message = bleach.clean(message, tags=tags)
+
+	lines = []
+	for line in message.splitlines():
+		if line.startswith("&gt;") and not line.startswith("&gt;&gt;"):
+			line = '<span class="greenText">' + line + '</span>'
+		lines.append(line)
+	message = "<br>".join(lines)
+
+	quotes = re.findall(r"&gt;&gt;\d+", message)
+	for quote in quotes:
+		msg_id = quote.replace("&gt;&gt;", "")
+		msg = '<a class="quotelink" '
+		msg += 'href="javascript:scrollToMsg(\'' + msg_id + '\')" '
+		msg += 'onmousemove="showPreview(event, \'' + msg_id + '\')" '
+		msg += 'onmouseout="clearPreview()">' + quote + '</a>'
+		message = message.replace(quote, msg)
+
 	user = socket.scope['user']
 
 	m = Message(
diff --git a/quest/jinja2/quest/quest.html b/quest/jinja2/quest/quest.html
index f56aab5..ffb1d0b 100644
--- a/quest/jinja2/quest/quest.html
+++ b/quest/jinja2/quest/quest.html
@@ -145,7 +145,7 @@
 					<div class="messageHeader">
 						<span class="messageName">{{ message.user.username or 'Anonymous' }}</span>
 						<span class="messageDate">{{ localtime(message.timestamp).strftime('%Y-%m-%d %H:%M:%S') }}</span>
-						<span class="messageID">No.<a href="javascript:quote('{{ message }}')">{{ message.id }}</a></span>
+						<span class="messageID">No.<a href="javascript:quote('{{ message.id }}')">{{ message.id }}</a></span>
 					</div>
 					<div class="messageContent">{{ message.message }}</div>
 				</div>
diff --git a/quest/static/quest.js b/quest/static/quest.js
index 4d4d080..a859fcd 100644
--- a/quest/static/quest.js
+++ b/quest/static/quest.js
@@ -1,3 +1,4 @@
+/* House keeping */
 var socket = new WebSocket('wss://' + document.domain + SCRIPT_NAME + '/ws/quest/' + quest_id + '/');
 socket.oldSend = socket.send;
 socket.send = function(event_title, data) {
@@ -12,7 +13,21 @@ socket.onmessage = function(e) {
 	if (socket.events[event] === undefined) { return; }
 	socket.events[event](data);
 }
+function load() {
+	document.getElementById('chatWindow').scrollTop = document.getElementById('chatWindow').scrollHeight;
+	let mtarea = document.getElementById('messageTextArea');
+	mtarea.addEventListener('keypress', function(event) {
+		if (event.key == 'Enter' && !event.shiftKey) {
+			let text = mtarea.value.trim();
+			mtarea.value = '';
+			if (text == '') { return; }
+			document.getElementById('chatWindow').scrollTop = document.getElementById('chatWindow').scrollHeight;
+			socket.send('message', {message: text, quest_id: quest_id});
+		}
+	});
+}
 
+/* Websocket events */
 socket.events['message'] = function(data) {
 	let msg_str = '<div id="message-' + data.message_id + '" class="message">';
 	msg_str = '<div class="messageHeader"><span class="messageName">' + data.name + '</span> ';
@@ -27,6 +42,7 @@ socket.events['message'] = function(data) {
 	}
 }
 
+/* Helpers */
 function padToTwo(number) {
 	if (number<=99) { number = ("0"+number).slice(-2); }
 	return number;
@@ -38,16 +54,31 @@ function strftime(date) {
 	return date_str;
 }
 
-function load() {
-	document.getElementById('chatWindow').scrollTop = document.getElementById('chatWindow').scrollHeight;
-	let mtarea = document.getElementById('messageTextArea');
-	mtarea.addEventListener('keypress', function(event) {
-		if (event.key == 'Enter' && !event.shiftKey) {
-			let text = mtarea.value.trim();
-			mtarea.value = '';
-			if (text == '') { return; }
-			document.getElementById('chatWindow').scrollTop = document.getElementById('chatWindow').scrollHeight;
-			socket.send('message', {message: text, quest_id: quest_id});
-		}
-	});
+/* User-facing */
+function quote(message_id) {
+	let textbox = document.getElementById('messageTextArea');
+	textbox.value += '>>' + message_id + '\n';
+	textbox.focus();
+}
+function showPreview(event, message_id) {
+	let elem = document.getElementById('msg-' + message_id);
+	if (!elem) { return; }
+	let preview = document.getElementById('preview');
+	preview.innerHTML = elem.innerHTML;
+	preview.style.display = '';
+	let x = event.clientX + 20 + 'px';
+	let y = event.clientY + 20 + 'px';
+	let maxWidth = window.innerWidth - event.clientX - 80 + 'px';
+	preview.style.top = y;
+	preview.style.left = x;
+	preview.style.maxWidth = maxWidth;
+}
+function clearPreview() {
+	document.getElementById('preview').innerHTML = '';
+	document.getElementById('preview').style.display = 'none';
+}
+function scrollToMsg(message_id) {
+	let elem = document.getElementById('msg-' + message_id);
+	if (!elem) { return; }
+	elem.scrollIntoView();
 }