what does calling ´this´ outside of a jquery plugin refer to
- by Richard
Hi, I am using the liveTwitter plugin
The problem is that I need to stop the plugin from hitting the Twitter api.
According to the documentation I need to do this
$("#tab1 .container_twitter_status").each(function(){ this.twitter.stop(); });
Already, the each does not make sense on an id
and what does this refer to?
Anyway, I get an undefined error.
I will paste the plugin code and hope it makes sense to somebody
MY only problem thusfar with this plugin is that I need to be able to stop it.
thanks in advance, Richard
/*
* jQuery LiveTwitter 1.5.0
* - Live updating Twitter plugin for jQuery
*
* Copyright (c) 2009-2010 Inge Jørgensen (elektronaut.no)
* Licensed under the MIT license (MIT-LICENSE.txt)
*
* $Date: 2010/05/30$
*/
/*
* Usage example:
* $("#twitterSearch").liveTwitter('bacon', {limit: 10, rate: 15000});
*/
(function($){
if(!$.fn.reverse){
$.fn.reverse = function() {
return this.pushStack(this.get().reverse(), arguments);
};
}
$.fn.liveTwitter = function(query, options, callback){
var domNode = this;
$(this).each(function(){
var settings = {};
// Handle changing of options
if(this.twitter) {
settings = jQuery.extend(this.twitter.settings, options);
this.twitter.settings = settings;
if(query) {
this.twitter.query = query;
}
this.twitter.limit = settings.limit;
this.twitter.mode = settings.mode;
if(this.twitter.interval){
this.twitter.refresh();
}
if(callback){
this.twitter.callback = callback;
}
// ..or create a new twitter object
} else {
// Extend settings with the defaults
settings = jQuery.extend({
mode: 'search', // Mode, valid options are: 'search', 'user_timeline'
rate: 15000, // Refresh rate in ms
limit: 10, // Limit number of results
refresh: true
}, options);
// Default setting for showAuthor if not provided
if(typeof settings.showAuthor == "undefined"){
settings.showAuthor = (settings.mode == 'user_timeline') ? false : true;
}
// Set up a dummy function for the Twitter API callback
if(!window.twitter_callback){
window.twitter_callback = function(){return true;};
}
this.twitter = {
settings: settings,
query: query,
limit: settings.limit,
mode: settings.mode,
interval: false,
container: this,
lastTimeStamp: 0,
callback: callback,
// Convert the time stamp to a more human readable format
relativeTime: function(timeString){
var parsedDate = Date.parse(timeString);
var delta = (Date.parse(Date()) - parsedDate) / 1000;
var r = '';
if (delta < 60) {
r = delta + ' seconds ago';
} else if(delta < 120) {
r = 'a minute ago';
} else if(delta < (45*60)) {
r = (parseInt(delta / 60, 10)).toString() + ' minutes ago';
} else if(delta < (90*60)) {
r = 'an hour ago';
} else if(delta < (24*60*60)) {
r = '' + (parseInt(delta / 3600, 10)).toString() + ' hours ago';
} else if(delta < (48*60*60)) {
r = 'a day ago';
} else {
r = (parseInt(delta / 86400, 10)).toString() + ' days ago';
}
return r;
},
// Update the timestamps in realtime
refreshTime: function() {
var twitter = this;
$(twitter.container).find('span.time').each(function(){
$(this).html(twitter.relativeTime(this.timeStamp));
});
},
// Handle reloading
refresh: function(initialize){
var twitter = this;
if(this.settings.refresh || initialize) {
var url = '';
var params = {};
if(twitter.mode == 'search'){
params.q = this.query;
if(this.settings.geocode){
params.geocode = this.settings.geocode;
}
if(this.settings.lang){
params.lang = this.settings.lang;
}
if(this.settings.rpp){
params.rpp = this.settings.rpp;
} else {
params.rpp = this.settings.limit;
}
// Convert params to string
var paramsString = [];
for(var param in params){
if(params.hasOwnProperty(param)){
paramsString[paramsString.length] = param + '=' + encodeURIComponent(params[param]);
}
}
paramsString = paramsString.join("&");
url = "http://search.twitter.com/search.json?"+paramsString+"&callback=?";
} else if(twitter.mode == 'user_timeline') {
url = "http://api.twitter.com/1/statuses/user_timeline/"+encodeURIComponent(this.query)+".json?count="+twitter.limit+"&callback=?";
} else if(twitter.mode == 'list') {
var username = encodeURIComponent(this.query.user);
var listname = encodeURIComponent(this.query.list);
url = "http://api.twitter.com/1/"+username+"/lists/"+listname+"/statuses.json?per_page="+twitter.limit+"&callback=?";
}
$.getJSON(url, function(json) {
var results = null;
if(twitter.mode == 'search'){
results = json.results;
} else {
results = json;
}
var newTweets = 0;
$(results).reverse().each(function(){
var screen_name = '';
var profile_image_url = '';
if(twitter.mode == 'search') {
screen_name = this.from_user;
profile_image_url = this.profile_image_url;
created_at_date = this.created_at;
} else {
screen_name = this.user.screen_name;
profile_image_url = this.user.profile_image_url;
// Fix for IE
created_at_date = this.created_at.replace(/^(\w+)\s(\w+)\s(\d+)(.*)(\s\d+)$/, "$1, $3 $2$5$4");
}
var userInfo = this.user;
var linkified_text = this.text.replace(/[A-Za-z]+:\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_:%&\?\/.=]+/, function(m) { return m.link(m); });
linkified_text = linkified_text.replace(/@[A-Za-z0-9_]+/g, function(u){return u.link('http://twitter.com/'+u.replace(/^@/,''));});
linkified_text = linkified_text.replace(/#[A-Za-z0-9_\-]+/g, function(u){return u.link('http://search.twitter.com/search?q='+u.replace(/^#/,'%23'));});
if(!twitter.settings.filter || twitter.settings.filter(this)) {
if(Date.parse(created_at_date) > twitter.lastTimeStamp) {
newTweets += 1;
var tweetHTML = '<div class="tweet tweet-'+this.id+'">';
if(twitter.settings.showAuthor) {
tweetHTML +=
'<img width="24" height="24" src="'+profile_image_url+'" />' +
'<p class="text"><span class="username"><a href="http://twitter.com/'+screen_name+'">'+screen_name+'</a>:</span> ';
} else {
tweetHTML +=
'<p class="text"> ';
}
tweetHTML +=
linkified_text +
' <span class="time">'+twitter.relativeTime(created_at_date)+'</span>' +
'</p>' +
'</div>';
$(twitter.container).prepend(tweetHTML);
var timeStamp = created_at_date;
$(twitter.container).find('span.time:first').each(function(){
this.timeStamp = timeStamp;
});
if(!initialize) {
$(twitter.container).find('.tweet-'+this.id).hide().fadeIn();
}
twitter.lastTimeStamp = Date.parse(created_at_date);
}
}
});
if(newTweets > 0) {
// Limit number of entries
$(twitter.container).find('div.tweet:gt('+(twitter.limit-1)+')').remove();
// Run callback
if(twitter.callback){
twitter.callback(domNode, newTweets);
}
// Trigger event
$(domNode).trigger('tweets');
}
});
}
},
start: function(){
var twitter = this;
if(!this.interval){
this.interval = setInterval(function(){twitter.refresh();}, twitter.settings.rate);
this.refresh(true);
}
},
stop: function(){
if(this.interval){
clearInterval(this.interval);
this.interval = false;
}
}
};
var twitter = this.twitter;
this.timeInterval = setInterval(function(){twitter.refreshTime();}, 5000);
this.twitter.start();
}
});
return this;
};
})(jQuery);
