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<!-- component template -->
<script type="text/x-template" id="grid-template">
  <table>
    <thead>
      <tr>
        <th v-repeat="key: columns"
          v-on="click:sortBy(key)"
          v-class="active: sortKey == key">
          {{key | capitalize}}
          <span class="arrow"
            v-class="reversed[key] ? 'dsc' : 'asc'">
          </span>
        </th>
      </tr>
    </thead>
    <tbody>
      <tr v-repeat="
        entry: data
        | filterBy filterKey
        | orderBy sortKey reversed[sortKey]">
        <td v-repeat="key: columns">
          {{entry[key]}}
        </td>
      </tr>
    </tbody>
  </table>
</script>

<!-- demo root element -->
<div id="demo">
  <form id="search">
    Search <input name="query" v-model="searchQuery">
  </form>
  <demo-grid v-with="
    data      : gridData,
    columns   : gridColumns,
    filterKey : searchQuery
  "></demo-grid>
</div>

// register the grid component
Vue.component('demo-grid', {
  template: '#grid-template',
  replace: true,
  data: function () {
    return {
      columns: null,
      sortKey: '',
      filterKey: '',
      reversed: {}
    }
  },
  compiled: function () {
    // initialize reverse state
    var self = this
    this.columns.forEach(function (key) {
      self.reversed.$add(key, false)
    })
  },
  methods: {
    sortBy: function (key) {
      this.sortKey = key
      this.reversed[key] = !this.reversed[key]
    }
  }
})

// bootstrap the demo
var demo = new Vue({
  el: '#demo',
  data: {
    search: '',
    gridColumns: ['name', 'power'],
    gridData: [
      { name: 'Chuck Norris', power: Infinity },
      { name: 'Bruce Lee', power: 9000 },
      { name: 'Jackie Chan', power: 7000 },
      { name: 'Jet Li', power: 8000 }
    ]
  }
})

body {
  font-family: Helvetica Neue, Arial, sans-serif;
  font-size: 14px;
  color: #444;
}

table {
  border: 2px solid #42b983;
  border-radius: 3px;
  background-color: #fff;
}

th {
  background-color: #42b983;
  color: rgba(255,255,255,0.66);
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -user-select: none;
}

td {
  background-color: #f9f9f9;
}

th, td {
  min-width: 120px;
  padding: 10px 20px;
}

th.active {
  color: #fff;
}

th.active .arrow {
  opacity: 1;
}

.arrow {
  display: inline-block;
  vertical-align: middle;
  width: 0;
  height: 0;
  margin-left: 5px;
  opacity: 0.66;
}

.arrow.asc {
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-bottom: 4px solid #fff;
}

.arrow.dsc {
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid #fff;
}