Position app-drawer underneath app-header

问题

Using the template from starter kit 2, is it possible to have the app drawer below the app-header? Right now the app drawer starts from the top of viewport and is columnized next to app-header.

I would like my app to be like google keep and google cloud console where the app header spans the entire width of the viewport and the app drawer begins underneath.

After reading the element catalog for app-layout, I did not see a offical api/attribute to set this. I've tried a few things but no success:

<app-drawer-layout fullbleed>
  <!-- Drawer content -->
    <app-header condenses reveals effects="waterfall">
      <app-toolbar>
        <paper-icon-button icon="menu" drawer-toggle></paper-icon-button>
        <div main-title>My App</div>
      </app-toolbar>
    </app-header>

  <app-drawer>
    <app-toolbar>Menu</app-toolbar>
    <iron-selector selected="[[page]]" attr-for-selected="name" class="drawer-list" role="navigation">
      <a name="view1" href="/view1">View One</a>
      <a name="view2" href="/view2">View Two</a>
      <a name="view3" href="/view3">View Three</a>
    </iron-selector>
  </app-drawer>

回答1:

Basically you need to use an app-drawer-layout inside an app-header-layout.

Here is a JSBin with the desired layout.

And the code itself:

<dom-module id="test-app">
  <template>

    <style>

      :host {
        display: block;
        --app-primary-color: #3F51B5;
      }

      app-header {
        background-color: var(--app-primary-color);
        color: white;
      }

      app-drawer {
        top: 64px;
        --app-drawer-content-container: {
          padding: 0px;
          background-color: #eee;
        };
      }

    </style>

    <app-header-layout fullbleed>
      <app-header fixed shadow>
        <app-toolbar id="toolbar">
          <paper-icon-button icon="menu" on-tap="_onTap"></paper-icon-button>
          <div main-title>Stormwind</div>
        </app-toolbar>
      </app-header>
      <app-drawer-layout>
        <app-drawer id="drawer">
          drawer content
        </app-drawer>
        <div>
          main content
        </div>
      </app-drawer-layout>
    </app-header-layout>

  </template>
  <script>
    Polymer({

      is: 'test-app',

      properties: {

      },

      ready: function() {

      },

      attached: function() {

      },

      _onTap: function() {
        this.$.drawer.toggle();
      }

    });
  </script>
</dom-module>

NOTE

You need to manually handle the drawer button (the drawer-toggle property won't work).

来源：https://stackoverflow.com/questions/39630270/position-app-drawer-underneath-app-header