designer

designer.html

<link rel="import" href="../core-pages/core-pages.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-header-panel/core-header-panel.html">

<polymer-element name="my-element">

  <template>
    <style>    
      :host {
        position: absolute;
        width: 100%;
        height: 100%;
        box-sizing: border-box;
      }
      #section2 {
        left: 350px;
        top: 130px;
        position: absolute;
      }
      #core_pages {
        width: 670px;
        height: 460px;
        border: 1px solid silver;
        left: 350px;
        top: 150px;
        position: absolute;
      }
      #core_header_panel {
        width: 300px;
        height: 400px;
        left: 189px;
        top: 19px;
        position: absolute;
      }
      #core_toolbar {
        color: rgb(255, 255, 255);
        background-color: rgb(79, 125, 201);
      }
    </style>
    <core-pages selected="0" selectedindex="0" id="core_pages" on-click="{{changePage}}">
      <section id="section" active transition="core-transition-left">
        <core-header-panel mode="standard" id="core_header_panel">
          <core-toolbar id="core_toolbar">
            <core-icon-button icon="menu" id="core_icon_button"></core-icon-button>
            <div id="div">Header</div>
          </core-toolbar>
          <section id="section2"></section>
        </core-header-panel>
      </section>
      <section id="section1" transition="core-transition-left">Page Two</section>
    </core-pages>
  </template>

  <script>

    Polymer('my-element',{
      changePage: function(event, detail, c) {
        console.log(event)
        console.log(detail)
        console.log(c)
         c.selected = (c.selected + 1) % c.items.length;
      	

      }
    });

  </script>

</polymer-element>