Files
meteor/packages/launch-screen/default-behavior.js
2014-10-17 14:34:39 -07:00

48 lines
1.8 KiB
JavaScript

// Hold launch screen on app load. This reflects the fact that Meteor
// mobile apps that use this package always start with a launch screen
// visible. (see XXX comment at the top of package.js for more
// details)
var handle = LaunchScreen.hold();
var Template = Package.templating && Package.templating.Template;
Meteor.startup(function () {
if (! Template) {
handle.release();
} else if (Package['iron:router']) {
// XXX Instead of doing this here, this code should be in
// iron:router directly. Note that since we're in a
// `Meteor.startup` block it's ok that we don't have a
// weak dependency on iron:router in package.js.
Package['iron:router'].Router.onAfterAction(function () {
handle.release();
});
} else {
// We intentionally don't use `Template.body.rendered = ...` here
// since other packages, or your app, may set the same
// callback. What we should really have is the ability to set
// multiple rendered callbacks (eg
// https://github.com/meteor/meteor/issues/2805), while ensuring
// that if one adds a callback after rendered already fired, the
// callback is called immediately.
//
// So, instead we poll every 50ms to detect whether
// `Template.body` has already been rendered.
var checkBody = setInterval(function () {
if (Template.body.view && Template.body.view.isRendered) {
handle.release();
clearInterval(checkBody);
}
}, 50);
// In case `Template.body` never gets rendered (due to some bug),
// hide the launch screen after 6 seconds. This matches the
// observed timeout that Cordova apps on Android (but not iOS)
// have on hiding the launch screen (even if you don't call
// `navigator.splashscreen.hide()`)
setTimeout(function () {
handle.release();
}, 6000);
}
});