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Lazy load Dropbox widget, and only when enabled 

This brings several improvements:

* The Dropbox script won't slow loading our app.
* If it fails to load, no traceback; Dropbox link just won't appear.
* For users with Dropbox disabled (most at this point), no loading at all.

(imported from commit e71ae5790fc85a185e622bdafb350109527b4eee)
This commit is contained in:
Scott Feeney 2013-08-26 13:00:38 -04:00
parent 95719a91cf
commit bf0909a94d
2 changed files with 16 additions and 3 deletions
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17
static/js/compose.js
View File

@ -520,8 +520,21 @@ $(function () {
if (window.XMLHttpRequest && (new XMLHttpRequest()).upload) {
$("#compose #attach_files").removeClass("notdisplayed");
}
if (feature_flags.dropbox_integration && Dropbox.isBrowserSupported()) {
$("#compose #attach_dropbox_files").removeClass("notdisplayed");
// Lazy load the Dropbox script, since it can slow our page load
// otherwise, and isn't enabled for all users. Also, this Dropbox
// script isn't under an open source license, so we can't (for legal
// reasons) minify it with our own code.
if (feature_flags.dropbox_integration) {
LazyLoad.js('https://www.dropbox.com/static/api/1/dropins.js', function () {
// Successful load. We should now have window.Dropbox.
if (! _.has(window, 'Dropbox')) {
blueslip.error('Dropbox script reports loading but window.Dropbox undefined');
} else if (Dropbox.isBrowserSupported()) {
Dropbox.init({appKey: window.dropboxAppKey});
$("#compose #attach_dropbox_files").removeClass("notdisplayed");
}
});
}
// Click event binding for "Attach files" button

2
templates/zerver/base.html
View File

@ -18,7 +18,7 @@
<![endif]-->
<link href="/static/favicon.ico?v=2" rel="shortcut icon">
<script type="text/javascript" src="https://www.dropbox.com/static/api/1/dropins.js" id="dropboxjs" data-app-key="xxxxxxxxxxxxxxx"></script>
<script type="text/javascript">var dropboxAppKey = "xxxxxxxxxxxxxxx";</script>
{# mixpanel #}
<script type="text/javascript">
(function(e,b){if(!b.__SV){var a,f,i,g;window.mixpanel=b;a=e.createElement("script");a.type="text/javascript";a.async=!0;a.src=("https:"===e.location.protocol?"https:":"http:")+'//cdn.mxpnl.com/libs/mixpanel-2.2.min.js';f=e.getElementsByTagName("script")[0];f.parentNode.insertBefore(a,f);b._i=[];b.init=function(a,e,d){function f(b,h){var a=h.split(".");2==a.length&&(b=b[a[0]],h=a[1]);b[h]=function(){b.push([h].concat(Array.prototype.slice.call(arguments,0)))}}var c=b;"undefined"!==