mediawiki-skins-MinervaNeue/resources/skins.minerva.options/backtotop.js
Stephen Niedzielski 5593b23aa8 Hygiene: replace mobile.startup/paths with props
Replace all occurrences of `M.require( 'mobile.startup/pathToModule' )`
with `M.require( 'mobile.startup' ).pathToModule`. Where multiple
requires existed, add an intermediate variable,
`var mobile = M.require( 'mobile.startup' )`, and dot off that.

This changes improves the consistency of MinervaNeue which currently
contains a mix of require styles and eliminates any deprecated requires.

Bug: T208915
Change-Id: If14f280672d914d07275197100b12421bb217b67
2019-02-07 14:55:04 -07:00

25 lines
689 B
JavaScript

( function ( M ) {
var BackToTopOverlay = M.require( 'skins.minerva.options/BackToTopOverlay' ),
backtotop = new BackToTopOverlay(),
features = mw.config.get( 'wgMinervaFeatures', {} ),
mobile = M.require( 'mobile.startup' ),
browser = mobile.Browser.getSingleton(),
eventBus = mobile.eventBusSingleton;
// check if browser user agent is iOS (T141598)
if ( browser.isIos() || !features.backToTop ) {
return;
}
// initialize the back to top element
backtotop.appendTo( 'body' );
eventBus.on( 'scroll', function () {
if ( $( window ).height() - $( window ).scrollTop() <= 0 ) {
backtotop.show();
} else {
backtotop.hide();
}
} );
}( mw.mobileFrontend ) );