keeweb/app/scripts/comp/browser/focus-detector.js

37 lines
1.1 KiB
JavaScript

import Backbone from 'backbone';
import { Launcher } from 'comp/launcher';
import { Features } from 'util/features';
const FocusDetector = {
init() {
this.isFocused = true;
this.detectsFocusWithEvents = !Features.isDesktop && !Features.isMobile;
if (this.detectsFocusWithEvents) {
window.addEventListener('focus', () => {
if (!FocusDetector.isFocused) {
FocusDetector.isFocused = true;
Backbone.trigger('main-window-focus');
}
});
window.addEventListener('blur', () => {
if (FocusDetector.isFocused) {
FocusDetector.isFocused = false;
Backbone.trigger('main-window-blur');
}
});
}
},
hasFocus() {
if (this.detectsFocusWithEvents) {
return this.isFocused;
} else if (Launcher) {
return Launcher.isAppFocused();
} else {
return true;
}
}
};
export { FocusDetector };