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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.
/**
* The strings contained in the arrays should be valid DOM-element tag names.
* @typedef {{
* 'new-user': !Array<string>,
* 'returning-user': !Array<string>
* }}
*/
let NuxOnboardingModules;
/**
* This list needs to be updated if new modules need to be supported in the
* onboarding flow.
* @const {!Set<string>}
*/
const MODULES_WHITELIST = new Set([
'nux-google-apps', 'nux-ntp-background', 'nux-set-as-default', 'signin-view'
]);
/**
* This list needs to be updated if new modules that need step-indicators are
* added.
* @const {!Set<string>}
*/
const MODULES_NEEDING_INDICATOR =
new Set(['nux-google-apps', 'nux-ntp-background', 'nux-set-as-default']);
Polymer({
is: 'welcome-app',
behaviors: [welcome.NavigationBehavior],
/** @private {?welcome.Routes} */
currentRoute_: null,
/** @private {NuxOnboardingModules} */
modules_: {
'new-user': loadTimeData.getString('newUserModules').split(','),
'returning-user': loadTimeData.getString('returningUserModules').split(','),
},
properties: {
/** @private */
modulesInitialized_: {
type: Boolean,
// Default to false so view-manager is hidden until views are initialized.
value: false,
},
},
hostAttributes: {
role: 'main',
},
listeners: {
'default-browser-change': 'onDefaultBrowserChange_',
},
/** @private */
onDefaultBrowserChange_: function() {
this.$$('cr-toast').show();
},
/**
* @param {welcome.Routes} route
* @param {number} step
* @private
*/
onRouteChange: function(route, step) {
const setStep = () => {
// If the specified step doesn't exist, that means there are no more
// steps. In that case, replace this page with NTP.
if (!this.$$(`#step-${step}`)) {
welcome.WelcomeBrowserProxyImpl.getInstance().goToNewTabPage(
/* replace */ true);
} else { // Otherwise, go to the chosen step of that route.
// At this point, views are ready to be shown.
this.modulesInitialized_ = true;
this.$.viewManager.switchView(
`step-${step}`, 'fade-in', 'no-animation');
}
};
// If the route changed, initialize the steps of modules for that route.
if (this.currentRoute_ != route) {
this.initializeModules(route).then(setStep);
} else {
setStep();
}
this.currentRoute_ = route;
},
/** @param {welcome.Routes} route */
initializeModules: function(route) {
// Remove all views except landing.
this.$.viewManager
.querySelectorAll('[slot="view"]:not([id="step-landing"])')
.forEach(element => element.remove());
// If it is on landing route, end here.
if (route == welcome.Routes.LANDING) {
return Promise.resolve();
}
let modules = this.modules_[route];
assert(modules); // Modules should be defined if on a valid route.
/** @type {!Promise} */
const defaultBrowserPromise =
welcome.NuxSetAsDefaultProxyImpl.getInstance()
.requestDefaultBrowserState()
.then((status) => {
if (status.isDefault || !status.canBeDefault) {
return false;
} else if (!status.isDisabledByPolicy && !status.isUnknownError) {
return true;
} else { // Unknown error.
return false;
}
});
// Wait until the default-browser state and bookmark visibility are known
// before anything initializes.
return Promise
.all([
defaultBrowserPromise,
welcome.BookmarkBarManager.getInstance().initialized,
])
.then(([canSetDefault]) => {
modules = modules.filter(module => {
if (module == 'nux-set-as-default') {
return canSetDefault;
}
if (!MODULES_WHITELIST.has(module)) {
// Makes sure the module specified by the feature configuration is
// whitelisted.
return false;
}
return true;
});
const indicatorElementCount = modules.reduce((count, module) => {
return count += MODULES_NEEDING_INDICATOR.has(module) ? 1 : 0;
}, 0);
let indicatorActiveCount = 0;
modules.forEach((elementTagName, index) => {
const element = document.createElement(elementTagName);
element.id = 'step-' + (index + 1);
element.setAttribute('slot', 'view');
this.$.viewManager.appendChild(element);
if (MODULES_NEEDING_INDICATOR.has(elementTagName)) {
element.indicatorModel = {
total: indicatorElementCount,
active: indicatorActiveCount++,
};
}
});
});
},
});
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