<template>
  <div>
    <div class="todo-container">
      <div class="todo-wrap">
        <MyHeader :addTodo="addTodo" />
        <MyList :todos="todos" />
        <MyFooter />
      </div>
    </div>
  </div>
</template>

<script>
import MyHeader from "./components/MyHeader.vue";
import MyList from "./components/MyList.vue";
import MyFooter from "./components/MyFooter.vue";

export default {
  name: "App",
  components: { MyHeader, MyList, MyFooter },
  data() {
    return {
      todos: [
        { id: "001", name: "抽烟", done: true },
        { id: "002", name: "喝酒", done: true },
        { id: "003", name: "开车", done: false },
      ],
    };
  },
  methods: {
    addTodo(obj) {
      this.todos.unshift(obj)
      // this.todos = [obj, ...this.todos]
    }
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>

<template>
  <div class="todo-header">
    <input type="text" placeholder="请输入你的任务名称，按回车键确认" v-model="title" @keyup.enter="add"/>
  </div>
</template>

<script>
import {nanoid} from 'nanoid'

export default {
  name: "MyHeader",
  data() {
      return {
          title: ''
      }
  },
  methods: {
    add(e) {
        if (!this.title.trim) return

        const todoObj = {id: nanoid(), name:this.title, done:false}

        this.addTodo(todoObj)

        this.title = ''
    }
  },
  props: ['addTodo']
};
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>

<template>
  <ul class="todo-main">
    <MyItem v-for="todo in todos" :key="todo.id" :todo="todo" />
  </ul>
</template>

<script>
import MyItem from "./MyItem.vue";
export default {
  name: "MyList",
  components: { MyItem },
  props: ["todos"],
};
</script>

<style scoped>
/*main*/
.todo-main {
  margin-left: 0px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0px;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
</style>

<template>
  <li>
    <label>
      <input type="checkbox" :checked="todo.done" />
      <span></span>
    </label>
    <button class="btn btn-danger" style="display: none">删除</button>
  </li>
</template>

<script>
export default {
  name: "MyItem",
  props: ['todo'],
  mounted() {
      console.log('todo:', this.todo)
  }
};
</script>

<style>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
</style>

<template>
  <div class="todo-footer">
    <label>
      <input type="checkbox" />
    </label>
    <span> <span>已完成0</span> / 全部2 </span>
    <button class="btn btn-danger">清除已完成任务</button>
  </div>
</template>

<script>
export default {
  name: "MyFooter",
};
</script>

<style scoped>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>

<template>
  <div>
    <div class="todo-container">
      <div class="todo-wrap">
        <MyHeader :addTodo="addTodo" />
        <MyList :todos="todos" :checkTodo="checkTodo" :deleteTodo="deleteTodo" />
        <MyFooter :todos="todos" :checkedAllTodo="checkedAllTodo" :clearTodos="clearTodos"/>
      </div>
    </div>
  </div>
</template>

<script>
import MyHeader from "./components/MyHeader.vue";
import MyList from "./components/MyList.vue";
import MyFooter from "./components/MyFooter.vue";

export default {
  name: "App",
  components: { MyHeader, MyList, MyFooter },
  data() {
    return {
      todos: [
        { id: "001", name: "抽烟", done: true },
        { id: "002", name: "喝酒", done: true },
        { id: "003", name: "开车", done: false },
      ],
    };
  },
  methods: {
    addTodo(obj) {
      this.todos.unshift(obj)
      // this.todos = [obj, ...this.todos]
    },
    checkTodo(id) {
      this.todos.forEach((todo) => { if(todo.id === id) todo.done = !todo.done })
    },
    deleteTodo(id) {
      this.todos = this.todos.filter(todo => todo.id !== id)
    },
    checkedAllTodo(done) {
       this.todos.forEach(todo => todo.done = done) 
    },
    clearTodos() {
      this.todos = this.todos.filter(todo => todo.done != true)
    }
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>

<template>
  <div class="todo-header">
    <input type="text" placeholder="请输入你的任务名称，按回车键确认" v-model="title" @keyup.enter="add"/>
  </div>
</template>

<script>
import {nanoid} from 'nanoid'

export default {
  name: "MyHeader",
  data() {
      return {
          title: ''
      }
  },
  methods: {
    add(e) {
        if (!this.title.trim) return

        const todoObj = {id: nanoid(), name:this.title, done:false}

        this.addTodo(todoObj)

        this.title = ''
    }
  },
  props: ['addTodo']
};
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>

<template>
  <ul class="todo-main">
    <MyItem v-for="todo in todos" :key="todo.id" :todo="todo" :checkTodo="checkTodo" :deleteTodo="deleteTodo"/>
  </ul>
</template>

<script>
import MyItem from "./MyItem.vue";
export default {
  name: "MyList",
  components: { MyItem },
  props: ["todos", "checkTodo", "deleteTodo"],
};
</script>

<style scoped>
/*main*/
.todo-main {
  margin-left: 0px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0px;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
</style>

<template>
  <li>
    <label>
      <input type="checkbox" :checked="todo.done" @change="handleCheck(todo.id)" />
      <span></span>
    </label>
    <button class="btn btn-danger" @click="handleDelete(todo.id)">删除</button>
  </li>
</template>

<script>
export default {
  name: "MyItem",
  props: ['todo', 'checkTodo', 'deleteTodo'],
  mounted() {
      console.log('todo:', this.todo)
  },
  methods: {
      handleCheck(id) {
          this.checkTodo(id)
      },
      handleDelete(id){
        if (confirm('确定删除吗？')){
          console.log(id);
          this.deleteTodo(id)
        }
      }
  },
};
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}

li:hover button{
  display: block;
}

</style>

<template>
  <div class="todo-footer" v-show="total">
    <label>
      <!-- <input type="checkbox" :checked="isAll" @change="checkedAll"/> -->
      <input type="checkbox" v-model="isAll2" />
    </label>
    <span> <span>已完成{{doneTotals}}</span> / 全部{{total}} </span>
    <button class="btn btn-danger" @click="clearAllTodos">清除已完成任务</button>
  </div>
</template>

<script>
export default {
  name: "MyFooter",
  props: ['todos', 'checkedAllTodo', 'clearTodos'],
  computed: {
    isAll(){
      return this.doneTotals === this.total && this.total > 0
    },
    isAll2:{
      get(){
        return this.doneTotals === this.total && this.total > 0
      },
      set(value) {
        this.checkedAllTodo(value)
      }
    },
    total() {
      return this.todos.length
    },
    doneTotals(){
      return this.todos.reduce((pre, todo) => {return pre+=todo.done}, 0)
    }
  },
  methods: {
    checkedAll(e){
      this.checkedAllTodo(e.target.checked)
    },
    clearAllTodos() {
      this.clearTodos()
    }
  },
};
</script>

<style scoped>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>

<template>
  <div>
    <div class="todo-container">
      <div class="todo-wrap">
        <MyHeader :addTodo="addTodo" />``
        <MyList
          :todos="todos"
          :checkTodo="checkTodo"
          :deleteTodo="deleteTodo"
        />
        <MyFooter
          :todos="todos"
          :checkedAllTodo="checkedAllTodo"
          :clearTodos="clearTodos"
        />
      </div>
    </div>
  </div>
</template>

<script>
import MyHeader from "./components/MyHeader.vue";
import MyList from "./components/MyList.vue";
import MyFooter from "./components/MyFooter.vue";

export default {
  name: "App",
  components: { MyHeader, MyList, MyFooter },
  data() {
    return {
      todos: JSON.parse(localStorage.getItem("todos")) || [],
    };
  },
  methods: {
    addTodo(obj) {
      this.todos.unshift(obj);
      // this.todos = [obj, ...this.todos]
    },
    checkTodo(id) {
      this.todos.forEach((todo) => {
        if (todo.id === id) todo.done = !todo.done;
      });
    },
    deleteTodo(id) {
      this.todos = this.todos.filter((todo) => todo.id !== id);
    },
    checkedAllTodo(done) {
      this.todos.forEach((todo) => (todo.done = done));
    },
    clearTodos() {
      this.todos = this.todos.filter((todo) => todo.done != true);
    },
  },
  watch: {
    todos: {
      deep: true,
      handler(value) {
        localStorage.setItem("todos", JSON.stringify(value));
      },
    },
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>

<template>
  <div class="todo-header">
    <input type="text" placeholder="请输入你的任务名称，按回车键确认" v-model="title" @keyup.enter="add"/>
  </div>
</template>

<script>
import {nanoid} from 'nanoid'

export default {
  name: "MyHeader",
  data() {
      return {
          title: ''
      }
  },
  methods: {
    add(e) {
        if (!this.title.trim) return

        const todoObj = {id: nanoid(), name:this.title, done:false}

        this.addTodo(todoObj)

        this.title = ''
    }
  },
  props: ['addTodo']
};
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>

<template>
  <ul class="todo-main">
    <MyItem v-for="todo in todos" :key="todo.id" :todo="todo" :checkTodo="checkTodo" :deleteTodo="deleteTodo"/>
  </ul>
</template>

<script>
import MyItem from "./MyItem.vue";
export default {
  name: "MyList",
  components: { MyItem },
  props: ["todos", "checkTodo", "deleteTodo"],
};
</script>

<style scoped>
/*main*/
.todo-main {
  margin-left: 0px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0px;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
</style>

<template>
  <li>
    <label>
      <input type="checkbox" :checked="todo.done" @change="handleCheck(todo.id)" />
      <span></span>
    </label>
    <button class="btn btn-danger" @click="handleDelete(todo.id)">删除</button>
  </li>
</template>

<script>
export default {
  name: "MyItem",
  props: ['todo', 'checkTodo', 'deleteTodo'],
  mounted() {
      console.log('todo:', this.todo)
  },
  methods: {
      handleCheck(id) {
          this.checkTodo(id)
      },
      handleDelete(id){
        if (confirm('确定删除吗？')){
          console.log(id);
          this.deleteTodo(id)
        }
      }
  },
};
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}

li:hover button{
  display: block;
}

</style>

<template>
  <div class="todo-footer" v-show="total">
    <label>
      <!-- <input type="checkbox" :checked="isAll" @change="checkedAll"/> -->
      <input type="checkbox" v-model="isAll2" />
    </label>
    <span> <span>已完成{{doneTotals}}</span> / 全部{{total}} </span>
    <button class="btn btn-danger" @click="clearAllTodos">清除已完成任务</button>
  </div>
</template>

<script>
export default {
  name: "MyFooter",
  props: ['todos', 'checkedAllTodo', 'clearTodos'],
  computed: {
    isAll(){
      return this.doneTotals === this.total && this.total > 0
    },
    isAll2:{
      get(){
        return this.doneTotals === this.total && this.total > 0
      },
      set(value) {
        this.checkedAllTodo(value)
      }
    },
    total() {
      return this.todos.length
    },
    doneTotals(){
      return this.todos.reduce((pre, todo) => {return pre+=todo.done}, 0)
    }
  },
  methods: {
    checkedAll(e){
      this.checkedAllTodo(e.target.checked)
    },
    clearAllTodos() {
      this.clearTodos()
    }
  },
};
</script>

<style scoped>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>

<template>
  <div>
    <div class="todo-container">
      <div class="todo-wrap">
        <MyHeader @addTodo="addTodo" />
        <MyList
          :todos="todos"
          :checkTodo="checkTodo"
          :deleteTodo="deleteTodo"
        />
        <MyFooter
          :todos="todos"
          @checkedAllTodo="checkedAllTodo"
          @clearTodos="clearTodos"
        />
      </div>
    </div>
  </div>
</template>

<script>
import MyHeader from "./components/MyHeader.vue";
import MyList from "./components/MyList.vue";
import MyFooter from "./components/MyFooter.vue";

export default {
  name: "App",
  components: { MyHeader, MyList, MyFooter },
  data() {
    return {
      todos: JSON.parse(localStorage.getItem("todos")) || [],
    };
  },
  methods: {
    addTodo(obj) {
      this.todos.unshift(obj);
      // this.todos = [obj, ...this.todos]
    },
    checkTodo(id) {
      this.todos.forEach((todo) => {
        if (todo.id === id) todo.done = !todo.done;
      });
    },
    deleteTodo(id) {
      this.todos = this.todos.filter((todo) => todo.id !== id);
    },
    checkedAllTodo(done) {
      this.todos.forEach((todo) => (todo.done = done));
    },
    clearTodos() {
      this.todos = this.todos.filter((todo) => todo.done != true);
    },
  },
  watch: {
    todos: {
      deep: true,
      handler(value) {
        localStorage.setItem("todos", JSON.stringify(value));
      },
    },
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>

<template>
  <div class="todo-header">
    <input
      type="text"
      placeholder="请输入你的任务名称，按回车键确认"
      v-model="title"
      @keyup.enter="add"
    />
  </div>
</template>

<script>
import { nanoid } from "nanoid";

export default {
  name: "MyHeader",
  data() {
    return {
      title: "",
    };
  },
  methods: {
    add(e) {
      if (!this.title.trim) return;

      const todoObj = { id: nanoid(), name: this.title, done: false };

      this.$emit("addTodo", todoObj);

      this.title = "";
    },
  },
};
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>

<template>
  <ul class="todo-main">
    <MyItem v-for="todo in todos" :key="todo.id" :todo="todo" :checkTodo="checkTodo" :deleteTodo="deleteTodo"/>
  </ul>
</template>

<script>
import MyItem from "./MyItem.vue";
export default {
  name: "MyList",
  components: { MyItem },
  props: ["todos", "checkTodo", "deleteTodo"],
};
</script>

<style scoped>
/*main*/
.todo-main {
  margin-left: 0px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0px;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
</style>

<template>
  <li>
    <label>
      <input type="checkbox" :checked="todo.done" @change="handleCheck(todo.id)" />
      <span></span>
    </label>
    <button class="btn btn-danger" @click="handleDelete(todo.id)">删除</button>
  </li>
</template>

<script>
export default {
  name: "MyItem",
  props: ['todo', 'checkTodo', 'deleteTodo'],
  mounted() {
      console.log('todo:', this.todo)
  },
  methods: {
      handleCheck(id) {
          this.checkTodo(id)
      },
      handleDelete(id){
        if (confirm('确定删除吗？')){
          console.log(id);
          this.deleteTodo(id)
        }
      }
  },
};
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}

li:hover button{
  display: block;
}

</style>

<template>
  <div class="todo-footer" v-show="total">
    <label>
      <!-- <input type="checkbox" :checked="isAll" @change="checkedAll"/> -->
      <input type="checkbox" v-model="isAll2" />
    </label>
    <span>
      <span>已完成{{ doneTotals }}</span> / 全部{{ total }}
    </span>
    <button class="btn btn-danger" @click="clearAllTodos">
      清除已完成任务
    </button>
  </div>
</template>

<script>
export default {
  name: "MyFooter",
  props: ["todos"],
  computed: {
    isAll() {
      return this.doneTotals === this.total && this.total > 0;
    },
    isAll2: {
      get() {
        return this.doneTotals === this.total && this.total > 0;
      },
      set(value) {
        // this.checkedAllTodo(value);
        this.$emit("checkedAllTodo", value);
      },
    },
    total() {
      return this.todos.length;
    },
    doneTotals() {
      return this.todos.reduce((pre, todo) => {
        return (pre += todo.done);
      }, 0);
    },
  },
  methods: {
    checkedAll(e) {
      // this.checkedAllTodo(e.target.checked);
      this.$emit("checkedAllTodo", e.target.checked);
    },
    clearAllTodos() {
      this.$emit("clearTodos");
      // this.clearTodos();
    },
  },
};
</script>

<style scoped>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>

<template>
  <div>
    <div class="todo-container">
      <div class="todo-wrap">
        <MyHeader @addTodo="addTodo" />
        <MyList :todos="todos" />
        <MyFooter
          :todos="todos"
          @checkedAllTodo="checkedAllTodo"
          @clearTodos="clearTodos"
        />
      </div>
    </div>
  </div>
</template>

<script>
import MyHeader from "./components/MyHeader.vue";
import MyList from "./components/MyList.vue";
import MyFooter from "./components/MyFooter.vue";

export default {
  name: "App",
  components: { MyHeader, MyList, MyFooter },
  data() {
    return {
      todos: JSON.parse(localStorage.getItem("todos")) || [],
    };
  },
  methods: {
    addTodo(obj) {
      this.todos.unshift(obj);
      // this.todos = [obj, ...this.todos]
    },
    checkTodo(id) {
      this.todos.forEach((todo) => {
        if (todo.id === id) todo.done = !todo.done;
      });
    },
    deleteTodo(id) {
      this.todos = this.todos.filter((todo) => todo.id !== id);
    },
    checkedAllTodo(done) {
      this.todos.forEach((todo) => (todo.done = done));
    },
    clearTodos() {
      this.todos = this.todos.filter((todo) => todo.done != true);
    },
  },
  mounted() {
    this.$bus.$on("checkTodo", this.checkTodo);
    this.$bus.$on("deleteTodo", this.deleteTodo);
  },
  beforeDestroy() {
    this.$bus.$off("checkTodo");
    this.$bus.$off("deleteTodo");
  },
  watch: {
    todos: {
      deep: true,
      handler(value) {
        localStorage.setItem("todos", JSON.stringify(value));
      },
    },
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>

<template>
  <div class="todo-header">
    <input
      type="text"
      placeholder="请输入你的任务名称，按回车键确认"
      v-model="title"
      @keyup.enter="add"
    />
  </div>
</template>

<script>
import { nanoid } from "nanoid";

export default {
  name: "MyHeader",
  data() {
    return {
      title: "",
    };
  },
  methods: {
    add(e) {
      if (!this.title.trim) return;

      const todoObj = { id: nanoid(), name: this.title, done: false };

      this.$emit("addTodo", todoObj);

      this.title = "";
    },
  },
};
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>

<template>
  <ul class="todo-main">
    <MyItem v-for="todo in todos" :key="todo.id" :todo="todo" />
  </ul>
</template>

<script>
import MyItem from "./MyItem.vue";
export default {
  name: "MyList",
  components: { MyItem },
  props: ["todos"],
};
</script>

<style scoped>
/*main*/
.todo-main {
  margin-left: 0px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0px;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
</style>

<template>
  <li>
    <label>
      <input
        type="checkbox"
        :checked="todo.done"
        @change="handleCheck(todo.id)"
      />
      <span></span>
    </label>
    <button class="btn btn-danger" @click="handleDelete(todo.id)">删除</button>
  </li>
</template>

<script>
export default {
  name: "MyItem",
  props: ["todo"],
  mounted() {
    console.log("todo:", this.todo);
  },
  methods: {
    handleCheck(id) {
      this.$bus.$emit("checkTodo", id);
      // this.checkTodo(id)
    },
    handleDelete(id) {
      if (confirm("确定删除吗？")) {
        console.log(id);
        this.$bus.$emit("deleteTodo", id);

        // this.deleteTodo(id)
      }
    },
  },
};
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}

li:hover button {
  display: block;
}
</style>

<template>
  <div class="todo-footer" v-show="total">
    <label>
      <!-- <input type="checkbox" :checked="isAll" @change="checkedAll"/> -->
      <input type="checkbox" v-model="isAll2" />
    </label>
    <span>
      <span>已完成{{ doneTotals }}</span> / 全部{{ total }}
    </span>
    <button class="btn btn-danger" @click="clearAllTodos">
      清除已完成任务
    </button>
  </div>
</template>

<script>
export default {
  name: "MyFooter",
  props: ["todos"],
  computed: {
    isAll() {
      return this.doneTotals === this.total && this.total > 0;
    },
    isAll2: {
      get() {
        return this.doneTotals === this.total && this.total > 0;
      },
      set(value) {
        // this.checkedAllTodo(value);
        this.$emit("checkedAllTodo", value);
      },
    },
    total() {
      return this.todos.length;
    },
    doneTotals() {
      return this.todos.reduce((pre, todo) => {
        return (pre += todo.done);
      }, 0);
    },
  },
  methods: {
    checkedAll(e) {
      // this.checkedAllTodo(e.target.checked);
      this.$emit("checkedAllTodo", e.target.checked);
    },
    clearAllTodos() {
      this.$emit("clearTodos");
      // this.clearTodos();
    },
  },
};
</script>

<style scoped>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>

<template>
  <div>
    <div class="todo-container">
      <div class="todo-wrap">
        <MyHeader @addTodo="addTodo" />
        <MyList :todos="todos" />
        <MyFooter
          :todos="todos"
          @checkedAllTodo="checkedAllTodo"
          @clearTodos="clearTodos"
        />
      </div>
    </div>
  </div>
</template>

<script>
import pubsub from 'pubsub-js'

import MyHeader from "./components/MyHeader.vue";
import MyList from "./components/MyList.vue";
import MyFooter from "./components/MyFooter.vue";

export default {
  name: "App",
  components: { MyHeader, MyList, MyFooter },
  data() {
    return {
      todos: JSON.parse(localStorage.getItem("todos")) || [],
    };
  },
  methods: {
    addTodo(obj) {
      this.todos.unshift(obj);
      // this.todos = [obj, ...this.todos]
    },
    checkTodo(id) {
      this.todos.forEach((todo) => {
        if (todo.id === id) todo.done = !todo.done;
      });
    },
    deleteTodo(id) {
      this.todos = this.todos.filter((todo) => todo.id !== id);
    },
    checkedAllTodo(done) {
      this.todos.forEach((todo) => (todo.done = done));
    },
    clearTodos() {
      this.todos = this.todos.filter((todo) => todo.done != true);
    },
  },
  mounted() {
    pubsub.subscribe('checkTodo', (_, id) => this.checkTodo(id))
    // pubsub.subscribe("checkTodo", (_, id) => this.checkTodo(id));
    pubsub.subscribe("deleteTodo", (_, id) => this.deleteTodo(id));
  },
  beforeDestroy() {
    pubsub.subscribe('checkTodo')
    // pubsub.subscribe("checkTodo")
    pubsub.subscribe("deleteTodo")
  },
  watch: {
    todos: {
      deep: true,
      handler(value) {
        localStorage.setItem("todos", JSON.stringify(value));
      },
    },
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>

<template>
  <div class="todo-header">
    <input
      type="text"
      placeholder="请输入你的任务名称，按回车键确认"
      v-model="title"
      @keyup.enter="add"
    />
  </div>
</template>

<script>
import { nanoid } from "nanoid";

export default {
  name: "MyHeader",
  data() {
    return {
      title: "",
    };
  },
  methods: {
    add(e) {
      if (!this.title.trim) return;

      const todoObj = { id: nanoid(), name: this.title, done: false };

      this.$emit("addTodo", todoObj);

      this.title = "";
    },
  },
};
</script>

<style scoped>
/*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>

<template>
  <ul class="todo-main">
    <MyItem v-for="todo in todos" :key="todo.id" :todo="todo" />
  </ul>
</template>

<script>
import MyItem from "./MyItem.vue";
export default {
  name: "MyList",
  components: { MyItem },
  props: ["todos"],
};
</script>

<style scoped>
/*main*/
.todo-main {
  margin-left: 0px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding: 0px;
}

.todo-empty {
  height: 40px;
  line-height: 40px;
  border: 1px solid #ddd;
  border-radius: 2px;
  padding-left: 5px;
  margin-top: 10px;
}
</style>

<template>
  <li>
    <label>
      <input
        type="checkbox"
        :checked="todo.done"
        @change="handleCheck(todo.id)"
      />
      <span></span>
    </label>
    <button class="btn btn-danger" @click="handleDelete(todo.id)">删除</button>
  </li>
</template>

<script>
import pubsub from 'pubsub-js'
export default {
  name: "MyItem",
  props: ["todo"],
  mounted() {
    console.log("todo:", this.todo);
  },
  methods: {
    handleCheck(id) {
      pubsub.publish('checkTodo', id)
    },
    handleDelete(id) {
      if (confirm("确定删除吗？")) {
        console.log(id);
        pubsub.publish('deleteTodo', id)
      }
    },
  },
};
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}

li:hover button {
  display: block;
}
</style>

<template>
  <div class="todo-footer" v-show="total">
    <label>
      <!-- <input type="checkbox" :checked="isAll" @change="checkedAll"/> -->
      <input type="checkbox" v-model="isAll2" />
    </label>
    <span>
      <span>已完成{{ doneTotals }}</span> / 全部{{ total }}
    </span>
    <button class="btn btn-danger" @click="clearAllTodos">
      清除已完成任务
    </button>
  </div>
</template>

<script>
export default {
  name: "MyFooter",
  props: ["todos"],
  computed: {
    isAll() {
      return this.doneTotals === this.total && this.total > 0;
    },
    isAll2: {
      get() {
        return this.doneTotals === this.total && this.total > 0;
      },
      set(value) {
        // this.checkedAllTodo(value);
        this.$emit("checkedAllTodo", value);
      },
    },
    total() {
      return this.todos.length;
    },
    doneTotals() {
      return this.todos.reduce((pre, todo) => {
        return (pre += todo.done);
      }, 0);
    },
  },
  methods: {
    checkedAll(e) {
      // this.checkedAllTodo(e.target.checked);
      this.$emit("checkedAllTodo", e.target.checked);
    },
    clearAllTodos() {
      this.$emit("clearTodos");
      // this.clearTodos();
    },
  },
};
</script>

<style scoped>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>