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embed.js
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embed.js
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var IRCCloudEmbed = function() {
function youtube_parser(url){
var regExp = /^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))\??v?=?([^#\&\?]*).*/;
var match = url.match(regExp);
if (match&&match[7].length==11) {
return match[7];
}
return false;
}
function is_image_href(href) {
return (/\.(png|jpg|jpeg|gif)($|\?)/i).test(href);
}
function is_youtube(href) {
return youtube_parser(href) !== false;
}
function is_imgur(href){
return (/imgur\.com\/.+$/i).test(href);
}
function embed_image(message_row, href) {
// Append image to current message row
var MEDIA_HEIGHT = 100,
message = $("<div>");
message.addClass("message");
var image = $('<img class="irccloud-embed" height=' + MEDIA_HEIGHT + '>')
.error(function(){ message.remove(); })
.attr("src", href)
.load(function(){
var $this = $(this);
$this.attr('title', this.naturalWidth + " x " + this.naturalHeight);
if (this.naturalHeight < MEDIA_HEIGHT){
$this.removeAttr('height');
}
})
.click(function(){
var $this = $(this);
if ($this.attr('height')){
if (this.naturalWidth > message.width()) {
$this.attr('width', message.width());
}
$this.removeAttr('height');
} else {
$this.attr('height', MEDIA_HEIGHT).removeAttr('width');
}
});
message.append(image);
message_row.append(message);
// Cancel any previous scroll events
$("img.irccloud-embed").unbind("load");
// Scroll to end once image loads
$(image).load(function() {
var scroll = message_row.parents(".scroll")[0];
var log = message_row.parents(".log")[0];
$(scroll).animate({scrollTop: $(log).height()}, 0);
});
}
function embed_youtube(message_row, href) {
var videoId = youtube_parser(href);
var embedString = '<iframe width="560" height="315" src="http://www.youtube.com/embed/' + videoId + '" frameborder="0" allowfullscreen></iframe>';
var message = $("<div>");
message.addClass("message");
var video = $(embedString);
message.append(video);
message_row.append(message);
// Cancel any previous scroll events
video.addClass("irccloud-embed");
$("iframe.irccloud-embed").unbind("load");
// Scroll to end once image loads
$(video).load(function() {
var scroll = message_row.parents(".scroll")[0];
var log = message_row.parents(".log")[0];
$(scroll).animate({scrollTop: $(log).height()}, 0);
});
}
function embed_imgur_basic(message_row, href) {
var bits = href.split('/');
var src = "http://i.imgur.com/" + bits[bits.length - 1] + ".jpg";
embed_image(message_row, src);
}
function embed_imgur(message_row, href){
// TODO
var bits = href.split('/');
var image_id = bits[bits.length - 1];
var thumbnail_src = "http://i.imgur.com/" + image_id + "b.jpg";
}
function process_row(message_row) {
message_row.find("a.link").each(function() {
href = $(this).attr("href") || '';
if (is_image_href(href)) {
embed_image(message_row, href);
} else if (is_youtube(href)) {
embed_youtube(message_row, href);
} else if (is_imgur(href)) {
embed_imgur_basic(message_row, href);
}
});
}
function watch() {
// Watch for new messages and embed any image links
$("#maincell").on("DOMNodeInserted", "div.log", function(event) {
var node = $(event.target);
if (node.hasClass("messageRow")) {
process_row(node);
}
});
}
$(document).ready(watch);
}();