chromesoul/lib/avatars.js

//
// Copyright (c) 2012 Rodolphe Breard
// 
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
// 
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//

var AvatarManager = function() {
    this.avatars = {};
};

AvatarManager.prototype.getContactPic = function(name, callback) {
    var xhr = new XMLHttpRequest();

    xhr.open("GET", "http://cdn.local.epitech.net/userprofil/profilview/" + name + ".jpg", true);
    xhr.responseType = "blob";
    xhr.onload = (function(elem) {
        return function(e) {
            if (e.target.status === 200) {
                elem.avatars[name] = window.webkitURL.createObjectURL(this.response);
            } else {
                elem.avatars[name] = "img/default-avatar.jpg";
            }

            if (typeof callback !== "undefined") {
                callback(elem.avatars[name]);
            }
        };
    })(this);
    xhr.send();
}

AvatarManager.prototype.get = function(name, callback) {
    if (typeof this.avatars[name] === "undefined") {
        this.getContactPic(name, callback);
    } else {
        callback(this.avatars[name]);
    }
};