b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
51 lines
1.7 KiB
JavaScript
Executable file
51 lines
1.7 KiB
JavaScript
Executable file
'use strict';
|
|
|
|
/**
|
|
* Handles sending out metrics, since final states are distributed across cards
|
|
* and their interior actions. Need something to coordinate the completion of
|
|
* certain states to know when to emit the right events. Used right now for:
|
|
* https://developer.mozilla.org/en-US/Apps/Build/Performance/Firefox_OS_app_responsiveness_guidelines
|
|
*
|
|
* Events tracked:
|
|
*
|
|
* apiDone: triggered when app knows data is flowing back and forth from the
|
|
* worker.
|
|
*
|
|
* contentDone: when a card's content is completely available. This includes
|
|
* any parts that were needed
|
|
*/
|
|
define(function(require) {
|
|
var evt = require('evt'),
|
|
apiDone = false,
|
|
contentDone = false;
|
|
|
|
function checkAppLoaded() {
|
|
if (apiDone && contentDone) {
|
|
window.performance.mark('fullyLoaded');
|
|
}
|
|
}
|
|
|
|
// Event listeners. Note they all unsubscribe after the first reception of
|
|
// that kind of event. This is because cards, who can have multiple instances,
|
|
// can emit the events throughout the lifetime of the app, and for the
|
|
// purposes of the startup events, they only need to be done once on startup.
|
|
evt.once('metrics:apiDone', function onApiDone() {
|
|
apiDone = true;
|
|
checkAppLoaded();
|
|
});
|
|
|
|
evt.once('metrics:contentDone', function() {
|
|
contentDone = true;
|
|
|
|
// Only need to dispatch these events if the startup cache was not used.
|
|
if (!window.startupCacheEventsSent) {
|
|
// Now that content is in, it is visually loaded, and content is
|
|
// interactive, since event listeners are bound as part of content
|
|
// insertion.
|
|
window.performance.mark('visuallyLoaded');
|
|
window.performance.mark('contentInteractive');
|
|
}
|
|
|
|
checkAppLoaded();
|
|
});
|
|
});
|