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<title>JSDoc: Source: jsxc.lib.gui.avatar.js</title>
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<h1 class="page-title">Source: jsxc.lib.gui.avatar.js</h1>
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<pre class="prettyprint source linenums"><code>jsxc.gui.avatar = {
queue: [],
PLACEHOLDER: 0,
DELAY: 300,
CHUNKSIZE: 20,
timeout: null,
lastRun: 0
};
/**
* Update avatar on all given elements.
*
* @memberOf jsxc.gui
* @param {jQuery} el Elements with subelement .jsxc_avatar
* @param {string} jid Jid
* @param {string} aid Avatar id (sha1 hash of image)
*/
jsxc.gui.avatar.update = function(el, jid, aid) {
var self = jsxc.gui.avatar;
if (typeof aid === 'undefined') {
self.set(jid, el, self.PLACEHOLDER);
return;
}
var avatarSrc = jsxc.storage.getUserItem('avatar', aid);
if (!jsxc.master && !avatarSrc) {
// force avatar placeholder for slave tab, until master tab requested vCard
avatarSrc = self.PLACEHOLDER;
}
if (avatarSrc !== null) {
self.set(jid, el, avatarSrc);
} else {
var handler_cb = function(stanza) {
var src = jsxc.gui.avatar.getPhotoFromVcard(stanza);
jsxc.storage.setUserItem('avatar', aid, src);
self.set(jid, el, src);
};
var error_cb = function(msg) {
jsxc.warn('Could not load vcard.', msg);
jsxc.storage.setUserItem('avatar', aid, self.PLACEHOLDER);
self.set(jid, el, self.PLACEHOLDER);
};
var args = [];
// workaround for https://github.com/strophe/strophejs/issues/172
if (Strophe.getBareJidFromJid(jid) === Strophe.getBareJidFromJid(jsxc.xmpp.conn.jid)) {
args = [handler_cb, error_cb];
} else {
args = [handler_cb, Strophe.getBareJidFromJid(jid), error_cb];
}
jsxc.gui.avatar.queueAction(jid, jsxc.xmpp.conn.vcard.get, args, jsxc.xmpp.conn.vcard);
}
};
jsxc.gui.avatar.getPhotoFromVcard = function(stanza) {
jsxc.debug('vCard', stanza);
var vCard = $(stanza).find("vCard > PHOTO");
var src;
if (vCard.length === 0) {
jsxc.debug('No photo provided');
src = '0';
} else if (vCard.find('EXTVAL').length > 0) {
src = vCard.find('EXTVAL').text();
} else {
var img = vCard.find('BINVAL').text();
var type = vCard.find('TYPE').text();
src = 'data:' + type + ';base64,' + img;
}
// concat chunks
src = src.replace(/[\t\r\n\f]/gi, '');
return src;
};
jsxc.gui.avatar.set = function(jid, el, src) {
var self = jsxc.gui.avatar;
if (src === self.PLACEHOLDER || src === '0') {
if (typeof jsxc.options.defaultAvatar === 'function') {
jsxc.gui.avatar.queueAction(jid, function() {
jsxc.options.defaultAvatar.call(el, jid);
});
return;
}
jsxc.gui.avatarPlaceholder(el.find('.jsxc_avatar'), jid);
return;
}
el.find('.jsxc_avatar').removeAttr('style');
el.find('.jsxc_avatar').css({
'background-image': 'url(' + src + ')',
'text-indent': '999px'
});
};
jsxc.gui.avatar.queueAction = function(jid, fn, args, context) {
var self = jsxc.gui.avatar;
var bid = jsxc.jidToBid(jid);
var data = jsxc.storage.getUserItem('buddy', bid) || {};
var state = data.status;
var index = self.queue.indexOf(bid);
if (index > -1) {
self.queue.splice(index, 1);
}
var action = {
fn: fn,
args: args || [],
context: context || this
};
if (state === 0) {
self.queue.push(action);
} else {
self.queue.unshift(action);
}
jsxc.gui.avatar.processQueue();
};
jsxc.gui.avatar.processQueue = function() {
var self = jsxc.gui.avatar;
var currentTime = (new Date()).getTime();
if (currentTime - self.lastRun < self.DELAY) {
if (!self.timeout) {
self.timeout = setTimeout(self.processQueue, self.DELAY);
}
return;
}
self.lastRun = currentTime;
var i, action;
for (i = 0; i < self.CHUNKSIZE; i++) {
if (self.queue.length > 0) {
action = self.queue.shift();
action.fn.apply(action.context, action.args);
}
}
if (self.queue.length > 0) {
self.timeout = setTimeout(self.processQueue, self.DELAY);
} else {
self.timeout = null;
}
};
</code></pre>
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