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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import {addSingletonGetter} from 'chrome://resources/js/cr.m.js';
const NUX_LANDING_PAGE_INTERACTION_METRIC_NAME =
'FirstRun.NewUserExperience.LandingPageInteraction';
/**
* NuxLandingPageInteractions enum.
* These values are persisted to logs and should not be renumbered or re-used.
* See tools/metrics/histograms/enums.xml.
* @enum {number}
*/
const NuxLandingPageInteractions = {
PageShown: 0,
NavigatedAway: 1,
NewUser: 2,
ExistingUser: 3,
};
const NUX_LANDING_PAGE_INTERACTIONS_COUNT =
Object.keys(NuxLandingPageInteractions).length;
/** @interface */
export class LandingViewProxy {
recordPageShown() {}
recordNavigatedAway() {}
recordNewUser() {}
recordExistingUser() {}
}
/** @implements {LandingViewProxy} */
export class LandingViewProxyImpl {
/** @override */
recordPageShown() {
this.recordInteraction_(NuxLandingPageInteractions.PageShown);
}
/** @override */
recordNavigatedAway() {
this.recordInteraction_(NuxLandingPageInteractions.NavigatedAway);
}
/** @override */
recordNewUser() {
this.recordInteraction_(NuxLandingPageInteractions.NewUser);
}
/** @override */
recordExistingUser() {
this.recordInteraction_(NuxLandingPageInteractions.ExistingUser);
}
/**
* @param {number} interaction
* @private
*/
recordInteraction_(interaction) {
chrome.metricsPrivate.recordEnumerationValue(
NUX_LANDING_PAGE_INTERACTION_METRIC_NAME, interaction,
NUX_LANDING_PAGE_INTERACTIONS_COUNT);
}
}
addSingletonGetter(LandingViewProxyImpl);
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