designer.html

<link rel="import" href="../core-scaffold/core-scaffold.html">
<link rel="import" href="../core-header-panel/core-header-panel.html">
<link rel="import" href="../core-menu/core-menu.html">
<link rel="import" href="../core-item/core-item.html">
<link rel="import" href="../core-icon-button/core-icon-button.html">
<link rel="import" href="../core-toolbar/core-toolbar.html">
<link rel="import" href="../core-menu/core-submenu.html">
<link rel="import" href="../core-pages/core-pages.html">

<polymer-element name="sorbet-scaffold">

  <template>
    <style>    
      :host {
        position: absolute;
        width: 100%;
        height: 100%;
        box-sizing: border-box;
      }
      #core_scaffold {
        position: absolute;
        top: 0px;
        right: 0px;
        bottom: 0px;
        left: 0px;
        width: 100%;
        height: 100%;
      }
      #core_header_panel {
        background-color: rgb(255, 255, 255);
      }
      #core_toolbar {
        color: rgb(255, 255, 255);
        background-color: rgb(79, 125, 201);
      }
      #core_menu {
        font-size: 16px;
      }
      #core_pages div {
        padding: 16px;
      }
    </style>
    <core-scaffold id="core_scaffold">
      <core-header-panel mode="seamed" id="core_header_panel" navigation flex>
        <core-toolbar id="core_toolbar"></core-toolbar>
        <core-menu selected="Projects" valueattr="label" selectedindex="0" theme="core-dark-theme">
          <core-item label="Projects" icon="settings" on-tap="{{ selectView }}" horizontal center layout active></core-item>
          <core-item label="Settings" icon="settings" on-tap="{{ selectView }}" horizontal center layout></core-item>
          <core-item label="Debugger" icon="settings" on-tap="{{ selectView }}" horizontal center layout></core-item>
        </core-menu>
      </core-header-panel>
      <div id="div" tool>Dashboard</div>
      <core-pages selected="0" selectedindex="0" notap id="core_pages">
        <div active>This is the projects view</div>
        <div>This is the settings view</div>
        <div>This is the debugger view</div>
      </core-pages>
    </core-scaffold>
  </template>

  <script>

    Polymer('sorbet-scaffold', {
      selectView: function(view) {
        console.log('VIEW IS', view);
      },
      selectDebugger: function () {
        this.$['core_pages'].selected = 2;
      },
      selectProjects: function () { 
        this.$['core_pages'].selected = 0;
      },
      selectSettings: function () {
        this.$['core_pages'].selected = 1;
      }
    });

  </script>

</polymer-element>