feat(Calendar): support select date range

src/calendar/Header.js

@@ -1,7 +1,7 @@
 import { createNamespace } from '../utils';
-import { t, formatMonthTitle } from './utils';
+import { t, bem, formatMonthTitle } from './utils';
 
-const [createComponent, bem] = createNamespace('calendar-header');
+const [createComponent] = createNamespace('calendar-header');
 
 export default createComponent({
   props: {
@@ -11,14 +11,16 @@ export default createComponent({
 
   methods: {
     genTitle() {
-      if (this.title) {
-        return <div class={bem('title')}>{this.title}</div>;
+      const title = this.slots('title') || this.title || t('title');
+
+      if (title) {
+        return <div class={bem('header-title')}>{title}</div>;
       }
     },
 
     genMonth() {
       return (
-        <div class={bem('month')}>
+        <div class={bem('month-title')}>
           {formatMonthTitle(this.currentMonth)}
         </div>
       );
@@ -39,7 +41,7 @@ export default createComponent({
 
   render() {
     return (
-      <div class={bem()}>
+      <div class={bem('header')}>
         {this.genTitle()}
         {this.genMonth()}
         {this.genWeekDays()}

src/calendar/Month.js

@@ -0,0 +1,74 @@
+import { createNamespace } from '../utils';
+import { t, bem } from './utils';
+
+const [createComponent] = createNamespace('calendar-month');
+
+export default createComponent({
+  props: {
+    date: Date,
+    days: Array,
+    title: String
+  },
+
+  mounted() {
+    this.height = this.$el.getBoundingClientRect().height;
+  },
+
+  methods: {
+    getLabel(item) {
+      if (item.type === 'start') {
+        return t('start');
+      }
+
+      if (item.type === 'end') {
+        return t('end');
+      }
+    },
+
+    genTitle() {
+      if (this.title) {
+        return <div class={bem('month-title')}>{this.title}</div>;
+      }
+    },
+
+    genDay(item) {
+      const { type } = item;
+
+      const onClick = () => {
+        if (type !== 'disabled') {
+          this.$emit('click', item);
+        }
+      };
+
+      if (type === 'selected') {
+        return (
+          <div class={bem('day')} onClick={onClick}>
+            <div class={bem('selected-day')}>{item.day}</div>
+          </div>
+        );
+      }
+
+      const label = this.getLabel(item);
+      const Label = label && <div class={bem('day-label')}>{label}</div>;
+
+      return (
+        <div class={bem('day', [type])} onClick={onClick}>
+          {item.day}
+          {Label}
+        </div>
+      );
+    }
+  },
+
+  render() {
+    return (
+      <div class={bem('month')}>
+        {this.genTitle()}
+        <div class={bem('days')}>
+          <div class={bem('month-mark')}>{this.date.getMonth() + 1}</div>
+          {this.days.map(this.genDay)}
+        </div>
+      </div>
+    );
+  }
+});

src/calendar/README.zh-CN.md

@@ -1,5 +1,9 @@
 # Calendar 日历
 
+### 介绍
+
+日历组件可以用于选择日期或日期区间，通常与 [弹出层](#/zh-CN/popup) 组件配合使用
+
 ### 引入
 
 ``` javascript
@@ -11,7 +15,7 @@ Vue.use(Calendar);
 
 ## 代码演示
 
-### 基础用法
+### 选择单个日期
 
 ```html
 <van-calendar />
@@ -26,8 +30,10 @@ Vue.use(Calendar);
 | v-model | 选中的日期 | `Date` | - | - |
 | type | 选择类型，`single`为选择单日，`range`为选择日期区间 | `string` | `single` | - |
 | title | 日历标题 | `string` | - | - |
-| min-date | 最小日期 | `Date` | 当前时间 | - |
-| max-date | 最大日期 | `Date` | 当前时间的六个月后 | - |
+| min-date | 最小日期 | `Date` | 当前日期 | - |
+| max-date | 最大日期 | `Date` | 当前日期的六个月后 | - |
+| confirm-text | 选择日期区间时，确认按钮的文字 | `string` | `确定` | - |
+| confirm-disabled-text | 选择日期区间时，确认按钮处于禁用状态时的文字 | `string` | `确定` | - |
 
 ### Events
 
@@ -39,6 +45,7 @@ Vue.use(Calendar);
 
 | 名称 | 说明 |
 |------|------|
+| title | 自定义标题 |
 
 ### 方法
 

src/calendar/demo/index.vue

@@ -2,20 +2,46 @@
   <demo-section>
     <demo-block :title="$t('basicUsage')">
       <van-cell
-        :title="$t('selectDate')"
-        :value="formatDate(date.selectDate)"
         is-link
-        @click="toggle('selectDate', true)"
+        :title="$t('selectSingleDate')"
+        :value="formatDate(date.selectSingleDate)"
+        @click="toggle('selectSingleDate', true)"
       />
-    </demo-block>
 
-    <van-popup v-model="show.selectDate" round closeable position="bottom">
-      <van-calendar
-        v-model="date.selectDate"
-        :title="$t('title')"
-        @select="show.selectDate = false"
+      <van-popup
+        v-model="show.selectSingleDate"
+        round
+        closeable
+        position="bottom"
+        style="height: 80vh;"
+      >
+        <van-calendar
+          v-model="date.selectSingleDate"
+          @select="show.selectSingleDate = false"
+        />
+      </van-popup>
+
+      <van-cell
+        is-link
+        :title="$t('selectDateRange')"
+        :value="formatDateRange(date.selectDateRange)"
+        @click="toggle('selectDateRange', true)"
       />
-    </van-popup>
+
+      <van-popup
+        v-model="show.selectDateRange"
+        round
+        closeable
+        position="bottom"
+        style="height: 80vh;"
+      >
+        <van-calendar
+          v-model="date.selectDateRange"
+          type="range"
+          @select="show.selectDateRange = false"
+        />
+      </van-popup>
+    </demo-block>
   </demo-section>
 </template>
 
@@ -23,22 +49,24 @@
 export default {
   i18n: {
     'zh-CN': {
-      title: '日期选择',
-      selectDate: '选择日期'
+      selectSingleDate: '选择单个日期',
+      selectDateRange: '选择日期区间'
     },
     'en-US': {
-      title: 'Select Date',
-      selectDate: 'Select Date'
+      selectSingleDate: 'Select Single Date',
+      selectDateRange: 'Select Date Range'
     }
   },
 
   data() {
     return {
       date: {
-        selectDate: null
+        selectSingleDate: null,
+        selectDateRange: []
       },
       show: {
-        selectDate: false
+        selectSingleDate: false,
+        selectDateRange: false
       }
     };
   },
@@ -52,6 +80,14 @@ export default {
       if (date) {
         return `${date.getFullYear()}/${date.getMonth() + 1}/${date.getDate()}`;
       }
+    },
+
+    formatDateRange(dateRange) {
+      if (dateRange.length) {
+        return `${this.formatDate(dateRange[0])} - ${this.formatDate(
+          dateRange[1]
+        )}`;
+      }
     }
   }
 };

src/calendar/index.js

@@ -1,12 +1,24 @@
 import { isDate } from '../utils/validate/date';
 import { getScrollTop } from '../utils/dom/scroll';
-import { createComponent, bem, compareMonth, formatMonthTitle } from './utils';
+import {
+  t,
+  bem,
+  getNextDay,
+  compareDay,
+  compareMonth,
+  createComponent,
+  formatMonthTitle
+} from './utils';
+import Month from './Month';
 import Header from './Header';
+import Button from '../button';
 
 export default createComponent({
   props: {
-    value: Date,
     title: String,
+    value: [Date, Array],
+    confirmText: String,
+    confirmDisabledText: String,
     type: {
       type: String,
       default: 'single'
@@ -28,7 +40,8 @@ export default createComponent({
 
   data() {
     return {
-      currentMonth: this.minDate
+      currentMonth: this.minDate,
+      currentValue: this.getDefaultValue()
     };
   },
 
@@ -54,42 +67,64 @@ export default createComponent({
     }
   },
 
-  mounted() {
-    this.initRects();
+  watch: {
+    value(val) {
+      this.currentValue = val;
+    }
   },
 
   methods: {
-    initRects() {
-      this.monthsHeight = this.$refs.month.map(
-        month => month.getBoundingClientRect().height
-      );
+    getDefaultValue() {
+      const { type, value, minDate } = this;
+
+      if (type === 'single') {
+        return value || minDate;
+      }
+
+      if (type === 'range') {
+        const range = value || [];
+        return [range[0] || minDate, range[1] || getNextDay(minDate)];
+      }
+    },
+
+    getDayType(day) {
+      const { type, minDate, maxDate, currentValue } = this;
+
+      if (compareDay(day, minDate) < 0 || compareDay(day, maxDate) > 0) {
+        return 'disabled';
+      }
+
+      if (type === 'single') {
+        return compareDay(day, currentValue) === 0 ? 'selected' : '';
+      }
+
+      if (type === 'range') {
+        if (!currentValue[0]) {
+          return;
+        }
+
+        const compareWithStart = compareDay(day, currentValue[0]);
+        if (compareWithStart === 0) {
+          return 'start';
+        }
+
+        if (!currentValue[1]) {
+          return;
+        }
+
+        const compareWithEnd = compareDay(day, currentValue[1]);
+        if (compareWithEnd === 0) {
+          return 'end';
+        }
+
+        if (compareWithStart > 0 && compareWithEnd < 0) {
+          return 'middle';
+        }
+      }
     },
 
     getDays(date) {
       const days = [];
-      const { minDate, maxDate } = this;
-      const checkMinDate = compareMonth(date, minDate) === 0;
-      const checkMaxDate = compareMonth(date, maxDate) === 0;
-      const checkSelected =
-        this.value &&
-        this.type === 'single' &&
-        compareMonth(date, this.value) === 0;
-
-      const isDisabled = date => {
-        if (checkMaxDate && date.getDate() > maxDate.getDate()) {
-          return true;
-        }
-
-        if (checkMinDate && date.getDate() < minDate.getDate()) {
-          return true;
-        }
-
-        return false;
-      };
-
-      const isSelected = date =>
-        checkSelected && date.getDate() === this.value.getDate();
-
       const placeholderCount = date.getDay() === 0 ? 6 : date.getDay() - 1;
 
       for (let i = 1; i <= placeholderCount; i++) {
@@ -102,8 +137,7 @@ export default createComponent({
         days.push({
           day: cursor.getDate(),
           date: new Date(cursor),
-          disabled: isDisabled(cursor),
-          selected: isSelected(cursor)
+          type: this.getDayType(cursor)
         });
 
         cursor.setDate(cursor.getDate() + 1);
@@ -113,46 +147,21 @@ export default createComponent({
     },
 
     genMonth(month, index) {
-      const Title = index !== 0 && (
-        <div class={bem('month-title')}>{month.title}</div>
-      );
-
-      const Days = month.days.map(item => {
-        const onClick = () => {
-          this.onClickDay(item);
-        };
-
-        if (item.selected) {
-          return (
-            <div class={bem('day')} onClick={onClick}>
-              <div class={bem('selected-day')}>{item.day}</div>
-            </div>
-          );
-        }
-
-        return (
-          <div
-            class={bem('day', { disabled: item.disabled })}
-            onClick={onClick}
-          >
-            {item.day}
-          </div>
-        );
-      });
-
       return (
-        <div class={bem('month')} ref="month" refInFor>
-          {Title}
-          <div class={bem('days')}>
-            <div class={bem('month-mark')}>{month.date.getMonth() + 1}</div>
-            {Days}
-          </div>
-        </div>
+        <Month
+          ref="month"
+          refInFor
+          days={month.days}
+          date={month.date}
+          title={index !== 0 ? month.title : ''}
+          onClick={this.onClickDay}
+        />
       );
     },
 
     onScroll() {
       const scrollTop = getScrollTop(this.$refs.body);
+      const monthsHeight = this.$refs.month.map(item => item.height);
       let height = 0;
 
       for (let i = 0; i < this.months.length; i++) {
@@ -161,18 +170,65 @@ export default createComponent({
           return;
         }
 
-        height += this.monthsHeight[i];
+        height += monthsHeight[i];
       }
     },
 
     onClickDay(item) {
-      if (item.disabled) {
-        return;
-      }
+      const { date } = item;
 
       if (this.type === 'single') {
-        this.$emit('input', item.date);
-        this.$emit('select', item.date);
+        this.$emit('input', date);
+        this.$emit('select', date);
+      }
+
+      if (this.type === 'range') {
+        const startDay = this.currentValue[0];
+        const endDay = this.currentValue[1];
+
+        if (startDay && endDay) {
+          this.$emit('input', [date, null]);
+          return;
+        }
+
+        if (startDay) {
+          const compareWithStart = compareDay(date, startDay);
+
+          if (compareWithStart === 1) {
+            this.$emit('input', [startDay, date]);
+          }
+
+          if (compareWithStart === -1) {
+            this.$emit('input', [date, null]);
+          }
+        }
+      }
+    },
+
+    onConfirmRange() {
+      this.$emit('input', this.currentValue);
+      this.$emit('select', this.currentValue);
+    },
+
+    genFooter() {
+      if (this.type === 'range') {
+        const disabled = !this.currentValue[1];
+        const text = disabled ? this.confirmDisabledText : this.confirmText;
+
+        return (
+          <div class={bem('footer')}>
+            <Button
+              round
+              block
+              type="danger"
+              disabled={disabled}
+              class={bem('confirm')}
+              onClick={this.onConfirmRange}
+            >
+              {text || t('confirm')}
+            </Button>
+          </div>
+        );
       }
     }
   },
@@ -180,10 +236,17 @@ export default createComponent({
   render() {
     return (
       <div class={bem()}>
-        <Header title={this.title} currentMonth={this.currentMonth} />
+        <Header
+          title={this.title}
+          currentMonth={this.currentMonth}
+          scopedSlots={{
+            title: () => this.slots('title')
+          }}
+        />
         <div ref="body" class={bem('body')} onScroll={this.onScroll}>
           {this.months.map(this.genMonth)}
         </div>
+        {this.genFooter()}
       </div>
     );
   }

src/calendar/index.less

@@ -3,10 +3,14 @@
 .van-calendar {
   display: flex;
   flex-direction: column;
-  height: 80vh;
+  height: 100%;
 
-  &-header__title,
-  &-header__month,
+  &__header {
+    flex-shrink: 0;
+    box-shadow: 0 2px 10px rgba(125, 126, 128, 0.16);
+  }
+
+  &__header-title,
   &__month-title {
     height: 44px;
     font-weight: @font-weight-bold;
@@ -14,34 +18,25 @@
     text-align: center;
   }
 
-  &-header {
-    flex-shrink: 0;
-    box-shadow: 0 2px 10px rgba(125, 126, 128, 0.16);
-
-    &__title {
-      font-size: @font-size-lg;
-    }
-
-    &__month {
-      font-size: @font-size-md;
-    }
-
-    &__weekdays {
-      display: flex;
-    }
-
-    &__weekday {
-      flex: 1;
-      font-size: @font-size-sm;
-      line-height: 30px;
-      text-align: center;
-    }
+  &__header-title {
+    font-size: @font-size-lg;
   }
 
   &__month-title {
     font-size: @font-size-md;
   }
 
+  &__weekdays {
+    display: flex;
+  }
+
+  &__weekday {
+    flex: 1;
+    font-size: @font-size-sm;
+    line-height: 30px;
+    text-align: center;
+  }
+
   &__body {
     flex: 1;
     overflow: auto;
@@ -73,17 +68,47 @@
   }
 
   &__day {
+    position: relative;
     width: 14.285%;
     height: 64px;
     font-size: @font-size-lg;
     cursor: pointer;
 
+    &--end,
+    &--start {
+      color: @white;
+      background-color: @red;
+    }
+
+    &--start {
+      border-radius: @border-radius-md 0 0 @border-radius-md;
+    }
+
+    &--end {
+      border-radius: 0 @border-radius-md @border-radius-md 0;
+    }
+
+    &--middle {
+      color: @red;
+      background-color: fade(@red, 10%);
+    }
+
     &--disabled {
       color: @gray-5;
       cursor: default;
     }
   }
 
+  &__day-label {
+    position: absolute;
+    right: 0;
+    bottom: 6px;
+    left: 0;
+    font-size: @font-size-xs;
+    line-height: 14px;
+    text-align: center;
+  }
+
   &__selected-day {
     width: 54px;
     height: 54px;
@@ -91,4 +116,13 @@
     background: @red;
     border-radius: @border-radius-md;
   }
+
+  &__footer {
+    padding: 7px @padding-md;
+  }
+
+  &__confirm {
+    height: 36px;
+    line-height: 34px;
+  }
 }

src/calendar/utils.ts

@@ -21,3 +21,23 @@ export function compareMonth(date1: Date, date2: Date) {
 
   return year1 > year2 ? 1 : -1;
 }
+
+export function compareDay(day1: Date, day2: Date) {
+  const compareMonthResult = compareMonth(day1, day2);
+
+  if (compareMonthResult === 0) {
+    const date1 = day1.getDate();
+    const date2 = day2.getDate();
+
+    return date1 === date2 ? 0 : date1 > date2 ? 1 : -1;
+  }
+
+  return compareMonthResult;
+}
+
+export function getNextDay(date: Date) {
+  date = new Date(date);
+  date.setDate(date.getDate() + 1);
+
+  return date;
+}

src/locale/lang/zh-CN.ts

@@ -12,6 +12,10 @@ export default {
   confirmDelete: '确定要删除么',
   telInvalid: '请填写正确的电话',
   vanCalendar: {
+    end: '结束',
+    start: '开始',
+    title: '日期选择',
+    confirm: '确定',
     weekdays: ['日', '一', '二', '三', '四', '五', '六'],
     monthTitle: (year: number, month: number) => `${year}年${month}月`
   },