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node_modules/vant/es/count-down/index.js

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+import { createNamespace, inBrowser } from '../utils';
+import { raf, cancelRaf } from '../utils/dom/raf';
+import { isSameSecond, parseTimeData, parseFormat } from './utils';
+
+var _createNamespace = createNamespace('count-down'),
+    createComponent = _createNamespace[0],
+    bem = _createNamespace[1];
+
+export default createComponent({
+  props: {
+    millisecond: Boolean,
+    time: {
+      type: [Number, String],
+      default: 0
+    },
+    format: {
+      type: String,
+      default: 'HH:mm:ss'
+    },
+    autoStart: {
+      type: Boolean,
+      default: true
+    }
+  },
+  data: function data() {
+    return {
+      remain: 0
+    };
+  },
+  computed: {
+    timeData: function timeData() {
+      return parseTimeData(this.remain);
+    },
+    formattedTime: function formattedTime() {
+      return parseFormat(this.format, this.timeData);
+    }
+  },
+  watch: {
+    time: {
+      immediate: true,
+      handler: 'reset'
+    }
+  },
+  activated: function activated() {
+    if (this.keepAlivePaused) {
+      this.counting = true;
+      this.keepAlivePaused = false;
+      this.tick();
+    }
+  },
+  deactivated: function deactivated() {
+    if (this.counting) {
+      this.pause();
+      this.keepAlivePaused = true;
+    }
+  },
+  beforeDestroy: function beforeDestroy() {
+    this.pause();
+  },
+  methods: {
+    // @exposed-api
+    start: function start() {
+      if (this.counting) {
+        return;
+      }
+
+      this.counting = true;
+      this.endTime = Date.now() + this.remain;
+      this.tick();
+    },
+    // @exposed-api
+    pause: function pause() {
+      this.counting = false;
+      cancelRaf(this.rafId);
+    },
+    // @exposed-api
+    reset: function reset() {
+      this.pause();
+      this.remain = +this.time;
+
+      if (this.autoStart) {
+        this.start();
+      }
+    },
+    tick: function tick() {
+      // should not start counting in server
+      // see: https://github.com/vant-ui/vant/issues/7807
+      if (!inBrowser) {
+        return;
+      }
+
+      if (this.millisecond) {
+        this.microTick();
+      } else {
+        this.macroTick();
+      }
+    },
+    microTick: function microTick() {
+      var _this = this;
+
+      this.rafId = raf(function () {
+        /* istanbul ignore if */
+        // in case of call reset immediately after finish
+        if (!_this.counting) {
+          return;
+        }
+
+        _this.setRemain(_this.getRemain());
+
+        if (_this.remain > 0) {
+          _this.microTick();
+        }
+      });
+    },
+    macroTick: function macroTick() {
+      var _this2 = this;
+
+      this.rafId = raf(function () {
+        /* istanbul ignore if */
+        // in case of call reset immediately after finish
+        if (!_this2.counting) {
+          return;
+        }
+
+        var remain = _this2.getRemain();
+
+        if (!isSameSecond(remain, _this2.remain) || remain === 0) {
+          _this2.setRemain(remain);
+        }
+
+        if (_this2.remain > 0) {
+          _this2.macroTick();
+        }
+      });
+    },
+    getRemain: function getRemain() {
+      return Math.max(this.endTime - Date.now(), 0);
+    },
+    setRemain: function setRemain(remain) {
+      this.remain = remain;
+      this.$emit('change', this.timeData);
+
+      if (remain === 0) {
+        this.pause();
+        this.$emit('finish');
+      }
+    }
+  },
+  render: function render() {
+    var h = arguments[0];
+    return h("div", {
+      "class": bem()
+    }, [this.slots('default', this.timeData) || this.formattedTime]);
+  }
+});