Ghost/ghost/admin/app/components/gh-nav-menu/main.js

import Component from '@ember/component';
import ShortcutsMixin from 'ghost-admin/mixins/shortcuts';
import ctrlOrCmd from 'ghost-admin/utils/ctrl-or-cmd';
import {and, equal, match, or} from '@ember/object/computed';
import {computed} from '@ember/object';
import {getOwner} from '@ember/application';
import {htmlSafe} from '@ember/string';
import {inject as service} from '@ember/service';

export default Component.extend(ShortcutsMixin, {
    billing: service(),
    config: service(),
    customViews: service(),
    feature: service(),
    ghostPaths: service(),
    navigation: service(),
    router: service(),
    session: service(),
    ui: service(),
    whatsNew: service(),
    membersStats: service(),

    tagName: '',

    iconStyle: '',
    memberCountLoading: true,
    memberCount: 0,

    showSearchModal: false,
    shortcuts: null,

    isIntegrationRoute: match('router.currentRouteName', /^settings\.integration/),

    // HACK: {{link-to}} should be doing this automatically but there appears to
    // be a bug in Ember that's preventing it from working immediately after login
    isOnSite: equal('router.currentRouteName', 'site'),

    showTagsNavigation: or('session.user.isOwnerOrAdmin', 'session.user.isEditor'),
    showMenuExtension: and('config.clientExtensions.menu', 'session.user.isOwner'),
    showScriptExtension: and('config.clientExtensions.script', 'session.user.isOwner'),
    showBilling: computed.reads('config.billingUrl'),

    init() {
        this._super(...arguments);

        let shortcuts = {};

        shortcuts[`${ctrlOrCmd}+k`] = {action: 'toggleSearchModal'};
        this.shortcuts = shortcuts;
    },

    // the menu has a rendering issue (#8307) when the the world is reloaded
    // during an import which we have worked around by not binding the icon
    // style directly. However we still need to keep track of changing icons
    // so that we can refresh when a new icon is uploaded
    didReceiveAttrs() {
        this._setIconStyle();
        this._loadMemberCount();
    },

    didInsertElement() {
        this._super(...arguments);
        this.registerShortcuts();
    },

    willDestroyElement() {
        this.removeShortcuts();
        this._super(...arguments);
    },

    actions: {
        transitionToOrRefreshSite() {
            let {currentRouteName} = this.router;
            if (currentRouteName === 'site') {
                getOwner(this).lookup(`route:${currentRouteName}`).refresh();
            } else {
                this.router.transitionTo('site');
            }
        },
        toggleSearchModal() {
            this.toggleProperty('showSearchModal');
        },
        toggleBillingModal() {
            this.billing.openBillingWindow(this.router.currentURL);
        }
    },

    _loadMemberCount() {
        this.membersStats.fetchCounts().then((stats) => {
            this.set('memberCountLoading', false);
            if (stats) {
                const statsDateObj = this.membersStats.fillCountDates(stats.data) || {};
                const dateValues = Object.values(statsDateObj);
                this.set('memberCount', dateValues.length ? dateValues[dateValues.length - 1].total : 0);
            }
        });
    },

    _setIconStyle() {
        let icon = this.icon;

        if (icon === this._icon) {
            return;
        }

        this._icon = icon;

        if (icon && icon.match(/^https?:\/\//i)) {
            this.set('iconStyle', htmlSafe(`background-image: url(${icon})`));
            return;
        }
        
        let iconUrl = 'https://static.ghost.org/v3.0.0/images/ghost-squircle.png';

        this.set('iconStyle', htmlSafe(`background-image: url(${iconUrl})`));
    }

});