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/* Authors:
* Petr Vobornik <pvoborni@redhat.com>
*
* Copyright (C) 2013 Red Hat
* see file 'COPYING' for use and warranty information
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
(function() {
var loader = window.ipa_loader = {
num_version: '__NUM_VERSION__',
api_version: '__API_VERSION__'
};
var head = document.getElementsByTagName('head')[0];
function link(path, rel) {
rel = rel || 'stylesheet';
var el = document.createElement('link');
el.setAttribute('rel', rel);
el.setAttribute('type', 'text/css');
el.setAttribute('href', path);
el.setAttribute('media', 'screen, print');
head.appendChild(el);
}
function js(path, callback) {
var el = document.createElement('script');
el.setAttribute('type', 'text/javascript');
el.setAttribute('src', path);
var done = false;
var onload = function () {
if (done) return;
done = true;
callback();
};
// older ie
el.onreadystatechange = function () {
if (el.readyState === 'loaded' || el.readyState === 'complete') {
el.onreadystatechange = null;
onload();
}
};
// others
el.onload = onload;
head.appendChild(el);
}
function synchronous_download(paths, callback) {
var dl = paths.splice(0, 1)[0];
if (dl) {
js(dl, function() {
synchronous_download(paths, callback);
});
} else {
if (callback) callback();
}
}
function version_suffix() {
var suffix = '';
if (loader.num_version) {
suffix = '?v=' + loader.num_version;
}
return suffix;
}
loader.scripts = function(scripts, callback) {
var suffix = version_suffix();
var syn_code = [];
for (var i=0; i < scripts.length; i++) {
syn_code.push(scripts[i]+suffix);
}
synchronous_download(syn_code, callback);
};
loader.styles = function(styles) {
var suffix = version_suffix();
for (var i=0; i < styles.length; i++) {
link(styles[i] + suffix);
}
};
loader.icons = function(icons) {
var suffix = version_suffix();
for (var i=0; i < icons.length; i++) {
link(icons[i] + suffix, 'icon');
}
};
})();
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