chromium/ash/webui/personalization_app/resources/js/wallpaper/google_photos_collection_element.html

<style include="wallpaper common cros-button-style">
  :host {
    overflow: hidden;
  }

  #main {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    width: 100%;
  }

  #tabStrip {
    flex: 0 0 auto;
    margin:
      /*top=*/4px
      /*horizontal=*/calc(var(--personalization-app-grid-item-spacing) / 2)
      /*bottom=*/calc(var(--personalization-app-grid-item-spacing) / 2);
    width: 100%;
  }

  #tabStrip cr-button {
    border: 0;
    border-radius: 16px;
  }

  #tabStrip cr-button + cr-button {
    margin-inline-start: 8px;
  }

  #tabStrip cr-button[aria-pressed='false'] {
    background-color: unset;
    color: var(--cros-text-color-secondary);
  }

  #tabStrip cr-button[aria-pressed='false']:hover {
    background-color: var(--cros-sys-hover_on_subtle, var(--cros-button-background-color-secondary-hover));
  }

  #albumsContent,
  #photosByAlbumIdContent,
  #photosContent,
  #zeroState {
    flex: 1 1 auto;
    height: 100%;
    overflow: hidden;
    width: 100%;
  }
</style>
<main id="main" aria-label="$i18n{googlePhotosLabel}" tabindex="-1">
  <template is="dom-if" if="[[isTabStripVisible_(albumId, albums_, albumsShared_)]]">
    <div id="tabStrip">
      <cr-button id="photosTab" aria-pressed="[[isPhotosTabSelected_(tab_)]]"
        on-click="onTabSelected_" class="secondary">
        <div class="text">$i18n{googlePhotosPhotosTabLabel}</div>
      </cr-button>
      <cr-button id="albumsTab" aria-pressed="[[isAlbumsTabSelected_(tab_)]]"
        on-click="onTabSelected_" class="secondary">
        <div class="text">$i18n{googlePhotosAlbumsTabLabel}</div>
      </cr-button>
    </div>
  </template>
  <google-photos-photos id="photosContent"
    hidden="[[!isPhotosTabContentVisible_(photos_, tab_)]]">
  </google-photos-photos>
  <template is="dom-if" if="[[!isAlbumsEmpty_(albums_, albumsShared_)]]">
    <google-photos-albums id="albumsContent"
      hidden="[[!isAlbumsTabContentVisible_(tab_)]]">
    </google-photos-albums>
    <google-photos-photos-by-album-id id="photosByAlbumIdContent"
      album-id="[[albumId]]"
      hidden="[[!isPhotosByAlbumIdTabContentVisible_(albumId, photosByAlbumId_, tab_)]]">
    </google-photos-photos-by-album-id>
  </template>
  <template is="dom-if"
    if="[[isZeroStateVisible_(albumId, photos_, photosByAlbumId_, tab_)]]">
    <google-photos-zero-state id="zeroState" tab="[[tab_]]">
    </google-photos-zero-state>
  </template>
</main>