todoapp

2/12/2019 - 7:46 AM
<template>
  <div>
    <section class="todoapp">
      <header class="header">
        <h1>todos</h1>
        <input
          data-cy="todo-input"
          class="new-todo"
          autofocus
          autocomplete="off"
          placeholder="What needs to be done?"
          v-model="newTodo"
          @keyup.enter="addTodo"
        />
      </header>
      <section class="main" v-show="todos.length" v-cloak>
        <input class="toggle-all" type="checkbox" v-model="allDone" />
        <ul class="todo-list" data-cy="todo-list">
          <li
            v-for="todo in filteredTodos"
            class="todo"
            :key="todo.id"
            :class="{ completed: todo.completed, editing: todo == editedTodo }"
          >
            <div class="view">
              <input class="toggle" type="checkbox" v-model="todo.completed" />
              <label @dblclick="editTodo(todo)">{{ todo.title }}</label>
              <button class="destroy" @click="removeTodo(todo)"></button>
            </div>
            <input
              class="edit"
              type="text"
              v-model="todo.title"
              v-todo-focus="todo == editedTodo"
              @blur="doneEdit(todo)"
              @keyup.enter="doneEdit(todo)"
              @keyup.esc="cancelEdit(todo)"
            />
          </li>
        </ul>
      </section>
      <footer class="footer" v-show="todos.length" v-cloak>
        <span class="todo-count" data-cy="todo-count">
          <strong>{{ remaining }}</strong> {{ remaining | pluralize }} left
        </span>
        <ul class="filters">
          <li>
            <a href="#/all" :class="{ selected: visibility == 'all' }">All</a>
          </li>
          <li>
            <a href="#/active" :class="{ selected: visibility == 'active' }"
              >Active</a
            >
          </li>
          <li>
            <a
              href="#/completed"
              :class="{ selected: visibility == 'completed' }"
              >Completed</a
            >
          </li>
        </ul>
        <button
          class="clear-completed"
          @click="removeCompleted"
          v-show="todos.length > remaining"
        >
          Clear completed
        </button>
      </footer>
    </section>
    <footer class="info">
      <p>Double-click to edit a todo</p>
      <p>Written by <a href="http://evanyou.me">Evan You</a></p>
      <p>Part of <a href="http://todomvc.com">TodoMVC</a></p>
    </footer>
  </div>
</template>

<script>
export default {
  data: function() {
    return {
      todos: this.$todoStorage.fetch(),
      newTodo: "",
      editedTodo: null,
      visibility: "all"
    };
  },

  // watch todos change for localStorage persistence
  watch: {
    todos: {
      handler: function(todos) {
        this.$todoStorage.save(todos);
      },
      deep: true
    }
  },

  // computed properties
  // http://vuejs.org/guide/computed.html
  computed: {
    filteredTodos: function() {
      return this.$filters[this.visibility](this.todos);
    },
    remaining: function() {
      return this.$filters.active(this.todos).length;
    },
    allDone: {
      get: function() {
        return this.remaining === 0;
      },
      set: function(value) {
        this.todos.forEach(function(todo) {
          todo.completed = value;
        });
      }
    }
  },

  filters: {
    pluralize: function(n) {
      return n === 1 ? "item" : "items";
    }
  },

  // methods that implement data logic.
  // note there's no DOM manipulation here at all.
  methods: {
    addTodo: function() {
      var value = this.newTodo && this.newTodo.trim();
      if (!value) {
        return;
      }
      this.todos.push({
        id: this.$todoStorage.uid++,
        title: value,
        completed: false
      });
      this.newTodo = "";
    },

    removeTodo: function(todo) {
      this.todos.splice(this.todos.indexOf(todo), 1);
    },

    editTodo: function(todo) {
      this.beforeEditCache = todo.title;
      this.editedTodo = todo;
    },

    doneEdit: function(todo) {
      if (!this.editedTodo) {
        return;
      }
      this.editedTodo = null;
      todo.title = todo.title.trim();
      if (!todo.title) {
        this.removeTodo(todo);
      }
    },

    cancelEdit: function(todo) {
      this.editedTodo = null;
      todo.title = this.beforeEditCache;
    },

    removeCompleted: function() {
      this.todos = this.$filters.active(this.todos);
    }
  }
};
</script>

<style>
#app {
  font-family: "Avenir", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}
html,
body {
  margin: 0;
  padding: 0;
}

button {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  font-size: 100%;
  vertical-align: baseline;
  font-family: inherit;
  font-weight: inherit;
  color: inherit;
  -webkit-appearance: none;
  appearance: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font: 14px "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.4em;
  background: #f5f5f5;
  color: #4d4d4d;
  min-width: 230px;
  max-width: 550px;
  margin: 0 auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-weight: 300;
}

:focus {
  outline: 0;
}

.hidden {
  display: none;
}

.todoapp {
  background: #fff;
  margin: 130px 0 40px 0;
  position: relative;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2), 0 25px 50px 0 rgba(0, 0, 0, 0.1);
}

.todoapp input::-webkit-input-placeholder {
  font-style: italic;
  font-weight: 300;
  color: #e6e6e6;
}

.todoapp input::-moz-placeholder {
  font-style: italic;
  font-weight: 300;
  color: #e6e6e6;
}

.todoapp input::input-placeholder {
  font-style: italic;
  font-weight: 300;
  color: #e6e6e6;
}

.todoapp h1 {
  position: absolute;
  top: -155px;
  width: 100%;
  font-size: 100px;
  font-weight: 100;
  text-align: center;
  color: rgba(175, 47, 47, 0.15);
  -webkit-text-rendering: optimizeLegibility;
  -moz-text-rendering: optimizeLegibility;
  text-rendering: optimizeLegibility;
}

.new-todo,
.edit {
  position: relative;
  margin: 0;
  width: 100%;
  font-size: 24px;
  font-family: inherit;
  font-weight: inherit;
  line-height: 1.4em;
  border: 0;
  color: inherit;
  padding: 6px;
  border: 1px solid #999;
  box-shadow: inset 0 -1px 5px 0 rgba(0, 0, 0, 0.2);
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.new-todo {
  padding: 16px 16px 16px 60px;
  border: none;
  background: rgba(0, 0, 0, 0.003);
  box-shadow: inset 0 -2px 1px rgba(0, 0, 0, 0.03);
}

.main {
  position: relative;
  z-index: 2;
  border-top: 1px solid #e6e6e6;
}

label[for="toggle-all"] {
  display: none;
}

.toggle-all {
  position: absolute;
  top: -55px;
  left: -12px;
  width: 60px;
  height: 34px;
  text-align: center;
  border: none; /* Mobile Safari */
}

.toggle-all:before {
  content: "❯";
  font-size: 22px;
  color: #e6e6e6;
  padding: 10px 27px 10px 27px;
}

.toggle-all:checked:before {
  color: #737373;
}

.todo-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.todo-list li {
  position: relative;
  font-size: 24px;
  border-bottom: 1px solid #ededed;
}

.todo-list li:last-child {
  border-bottom: none;
}

.todo-list li.editing {
  border-bottom: none;
  padding: 0;
}

.todo-list li.editing .edit {
  display: block;
  width: 506px;
  padding: 12px 16px;
  margin: 0 0 0 43px;
}

.todo-list li.editing .view {
  display: none;
}

.todo-list li .toggle {
  text-align: center;
  width: 40px;
  /* auto, since non-WebKit browsers doesn't support input styling */
  height: auto;
  position: absolute;
  top: 0;
  bottom: 0;
  margin: auto 0;
  border: none; /* Mobile Safari */
  -webkit-appearance: none;
  appearance: none;
}

.todo-list li .toggle:after {
  content: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="-10 -18 100 135"><circle cx="50" cy="50" r="50" fill="none" stroke="#ededed" stroke-width="3"/></svg>');
}

.todo-list li .toggle:checked:after {
  content: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="-10 -18 100 135"><circle cx="50" cy="50" r="50" fill="none" stroke="#bddad5" stroke-width="3"/><path fill="#5dc2af" d="M72 25L42 71 27 56l-4 4 20 20 34-52z"/></svg>');
}

.todo-list li label {
  word-break: break-all;
  padding: 15px 60px 15px 15px;
  margin-left: 45px;
  display: block;
  line-height: 1.2;
  transition: color 0.4s;
}

.todo-list li.completed label {
  color: #d9d9d9;
  text-decoration: line-through;
}

.todo-list li .destroy {
  display: none;
  position: absolute;
  top: 0;
  right: 10px;
  bottom: 0;
  width: 40px;
  height: 40px;
  margin: auto 0;
  font-size: 30px;
  color: #cc9a9a;
  margin-bottom: 11px;
  transition: color 0.2s ease-out;
}

.todo-list li .destroy:hover {
  color: #af5b5e;
}

.todo-list li .destroy:after {
  content: "×";
}

.todo-list li:hover .destroy {
  display: block;
}

.todo-list li .edit {
  display: none;
}

.todo-list li.editing:last-child {
  margin-bottom: -1px;
}

.footer {
  color: #777;
  padding: 10px 15px;
  height: 20px;
  text-align: center;
  border-top: 1px solid #e6e6e6;
}

.footer:before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 50px;
  overflow: hidden;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2), 0 8px 0 -3px #f6f6f6,
    0 9px 1px -3px rgba(0, 0, 0, 0.2), 0 16px 0 -6px #f6f6f6,
    0 17px 2px -6px rgba(0, 0, 0, 0.2);
}

.todo-count {
  float: left;
  text-align: left;
}

.todo-count strong {
  font-weight: 300;
}

.filters {
  margin: 0;
  padding: 0;
  list-style: none;
  position: absolute;
  right: 0;
  left: 0;
}

.filters li {
  display: inline;
}

.filters li a {
  color: inherit;
  margin: 3px;
  padding: 3px 7px;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 3px;
}

.filters li a:hover {
  border-color: rgba(175, 47, 47, 0.1);
}

.filters li a.selected {
  border-color: rgba(175, 47, 47, 0.2);
}

.clear-completed,
html .clear-completed:active {
  float: right;
  position: relative;
  line-height: 20px;
  text-decoration: none;
  cursor: pointer;
}

.clear-completed:hover {
  text-decoration: underline;
}

.info {
  margin: 65px auto 0;
  color: #bfbfbf;
  font-size: 10px;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
  text-align: center;
}

.info p {
  line-height: 1;
}

.info a {
  color: inherit;
  text-decoration: none;
  font-weight: 400;
}

.info a:hover {
  text-decoration: underline;
}

/*
	Hack to remove background from Mobile Safari.
	Can't use it globally since it destroys checkboxes in Firefox
*/
@media screen and (-webkit-min-device-pixel-ratio: 0) {
  .toggle-all,
  .todo-list li .toggle {
    background: none;
  }

  .todo-list li .toggle {
    height: 40px;
  }

  .toggle-all {
    -webkit-transform: rotate(90deg);
    transform: rotate(90deg);
    -webkit-appearance: none;
    appearance: none;
  }
}

@media (max-width: 430px) {
  .footer {
    height: 50px;
  }

  .filters {
    bottom: 10px;
  }
}
</style>
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