// register the grid component
Vue.component("demo-grid", {
  template: "#grid-template",
  replace: true,
  props: {
    data: Array,
    columns: Array,
    filterKey: String,
  },
  data: function () {
    var sortOrders = {};
    this.columns.forEach(function (key) {
      sortOrders[key] = 1;
    });
    return {
      sortKey: "",
      sortOrders: sortOrders,
    };
  },
  computed: {
    filteredData: function () {
      var sortKey = this.sortKey;
      var filterKey = this.filterKey && this.filterKey.toLowerCase();
      var order = this.sortOrders[sortKey] || 1;
      var data = this.data;
      if (filterKey) {
        data = data.filter(function (row) {
          return Object.keys(row).some(function (key) {
            return String(row[key]).toLowerCase().indexOf(filterKey) > -1;
          });
        });
      }
      if (sortKey) {
        data = data.slice().sort(function (a, b) {
          a = a[sortKey];
          b = b[sortKey];
          return (a === b ? 0 : a > b ? 1 : -1) * order;
        });
      }
      return data;
    },
  },
  filters: {
    capitalize: function (str) {
      return str.charAt(0).toUpperCase() + str.slice(1);
    },
  },
  methods: {
    sortBy: function (key) {
      this.sortKey = key;
      this.sortOrders[key] = this.sortOrders[key] * -1;
    },
  },
});

// bootstrap the demo
var demo = new Vue({
  el: "#demo",
  data: {
    searchQuery: "",
    gridColumns: ["name", "power"],
    gridData: [
      { name: "Chuck Norris", power: Infinity },
      { name: "Bruce Lee", power: 9000 },
      { name: "Jackie Chan", power: 7000 },
      { name: "Jet Li", power: 8000 },
    ],
  },
});
// Compiler
// 需要编译器，把 template 转换成 render 函数
// const vm = new Vue({
//   el: "#app",
//   template: "<h1>{{ msg }}</h1>",
//   data: {
//     msg: "Hello Vue",
//   },
// });
// Runtime
// 不需要编译器
const vm = new Vue({
  el: "#app",
  render(h) {
    return h("h1", this.msg);
  },
  data: {
    msg: "Hello Vue",
  },
});
