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function escapeHtml(txt) {
if (!txt) { return ""; }
else { return $("<span>").text(txt).html(); }
}
// http://stackoverflow.com/questions/37684/replace-url-with-html-links-javascript
function linkify(text) {
var exp = /(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/gi;
return text.replace(exp,"<a href='$1'>$1</a>");
}
// http://snippets.dzone.com/posts/show/6995
var URLRegex = /^((http\:\/\/|https\:\/\/|ftp\:\/\/)|(www\.))+(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?$/i
var PicRegex = /\.(jpg|jpeg|png|gif|bmp)$/i;
function isImage(content) {
var match = URLRegex.exec(content);
sansParams = match && match[0].replace(/\?.*$/i, "");
return sansParams && PicRegex.test(sansParams);
}
function buildMsgContent(content) {
if (isImage(content)) {
return '<a href="' + content + '" target="_blank">'
+ '<img src="'+ content + '" /></a>';
} else {
return linkify(escapeHtml(content));
}
}
function buildMessageDiv(msg) {
var nick = escapeHtml(msg.nick);
return '<div class="msgDiv"><b><a href="/u/' + nick + ' ">' + nick + '</a>: </b>'
+ buildMsgContent(msg.content) + '</div>';
}
function buildUserDiv(user) {
return '<div class="username"><a href="/u/' + escapeHtml(user.nick) + '">' +
'<img src="' + user.avatar + '" width="50" height="50">' +
escapeHtml(user.nick) + '</a></div>';
}
function handleMsgError(resp) {
var respText = resp.responseText ? resp.responseText.trim() : false;
if (respText == 'UNKNOWN_USER') {
alert("Can't send message! Please login.");
} else if (respText) {
alert("Cannot send message! (" + respText + ")");
} else {
alert("Cannot send message!");
}
}
function submitMessage() {
var content = $('#msgInput').val();
$('#msgInput').blur();
if (content == '') { return; }
$('#msgInput, #msgSubmit').attr('disabled', 'disabled');
var onSuccess = function(json) {
$('#msgInput, #msgSubmit').removeAttr('disabled');
$('#msgInput').val('');
};
var onError = function(resp, textStatus, errorThrown) {
$('#msgInput, #msgSubmit').removeAttr('disabled');
handleMsgError(resp);
};
$.ajax({
type: 'GET',
timeout: 5000,
url: 'msg',
data: { 'content': content },
cache: false,
dataType: 'json',
success: onSuccess,
error: onError
});
updateUI([{ 'nick': Nick, 'content': content}], null);
}
function ifEnter(fn) {
return function(e) {
if (e.keyCode == 13) { fn(); }
};
}
function isScrolledToBottom(div) {
return Math.abs(div.scrollTop - (div.scrollHeight - div.offsetHeight)) <= 3;
}
function scrollToBottom(div) {
div.scrollTop = div.scrollHeight;
}
// Give images time to start loading before scrolling.
// Needed until server knows size of images.
function delayedScrollToBottom(delay) {
setTimeout(scrollToBottom, delay, $('#messageList')[0]);
}
function updateUI(msgs, users) {
if (msgs && msgs.length > 0) {
var msgStr = $.map(msgs, buildMessageDiv).join('');
var wasScrolledToBottom = isScrolledToBottom($('#messageList')[0]);
$('#messageList').append(msgStr);
if (wasScrolledToBottom) {
delayedScrollToBottom(500);
}
}
if (users && users.length > 0) {
$("#userList").html($.map(users, buildUserDiv).join(''));
}
}
function refresh() {
var onSuccess = function(json) {
var messages = $.grep(
json.messages,
function(m) { return m.nick != Nick });
updateUI(messages, json.users);
setTimeout(refresh, 1000);
};
var onError = function(resp, textStatus, errorThrown) {
setTimeout(refresh, 1000);
};
$.ajax({
type: 'GET',
timeout: 5000,
url: 'refresh',
cache: false,
dataType: 'json',
success: onSuccess,
error: onError
});
}
function initChat() {
$('.msgDiv .content').each(function() {
var t = $(this);
t.html(buildMsgContent(t.text()));
});
$('#msgInput').keyup(ifEnter(submitMessage));
$('#msgSubmit').click(submitMessage);
delayedScrollToBottom(500);
setTimeout(refresh, 1000);
}
function initProfile() {
$('.logged-dump .content').each(function() {
var t = $(this);
t.html(buildMsgContent(t.text()));
});
var onSubmit = function(original_element, edit, old) {
edit = $.trim(edit);
if (edit == old) { return old };
// TODO: Prevent entering script tags
if (original_element == 'avatar' && edit.indexOf("<") != -1) {
return old;
}
$.ajax({
type: "GET",
timeout: 5000,
url: "/update-profile",
data: { 'attr': original_element, 'val': edit }
});
if (original_element == 'avatar') {
var s = '<img id="avatarPic" src="' + edit + '" width="150" />';
$('#avatarPic').replaceWith(s);
}
return escapeHtml(edit);
};
var opt = { 'default_text': 'Enter here!',
'callback': onSubmit,
'field_type': 'text',
'callbackShowErrors': false };
$('#avatar.editable').editInPlace(opt);
opt['field_type'] = 'textarea';
$('#contact.editable, #bio.editable').editInPlace(opt);
};
function initLog() {
$('.logged-dump .content').each(function() {
var t = $(this);
t.html(buildMsgContent(t.text()));
});
}
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