zh_wx/miniprogram_npm/@vant/weapp/mixins/transition.js

'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
exports.transition = void 0;
var utils_1 = require('../common/utils');
var getClassNames = function (name) {
  return {
    enter:
      'van-' +
      name +
      '-enter van-' +
      name +
      '-enter-active enter-class enter-active-class',
    'enter-to':
      'van-' +
      name +
      '-enter-to van-' +
      name +
      '-enter-active enter-to-class enter-active-class',
    leave:
      'van-' +
      name +
      '-leave van-' +
      name +
      '-leave-active leave-class leave-active-class',
    'leave-to':
      'van-' +
      name +
      '-leave-to van-' +
      name +
      '-leave-active leave-to-class leave-active-class',
  };
};
var nextTick = function () {
  return new Promise(function (resolve) {
    return setTimeout(resolve, 1000 / 30);
  });
};
exports.transition = function (showDefaultValue) {
  return Behavior({
    properties: {
      customStyle: String,
      // @ts-ignore
      show: {
        type: Boolean,
        value: showDefaultValue,
        observer: 'observeShow',
      },
      // @ts-ignore
      duration: {
        type: null,
        value: 300,
        observer: 'observeDuration',
      },
      name: {
        type: String,
        value: 'fade',
      },
    },
    data: {
      type: '',
      inited: false,
      display: false,
    },
    methods: {
      observeShow: function (value, old) {
        if (value === old) {
          return;
        }
        value ? this.enter() : this.leave();
      },
      enter: function () {
        var _this = this;
        var _a = this.data,
          duration = _a.duration,
          name = _a.name;
        var classNames = getClassNames(name);
        var currentDuration = utils_1.isObj(duration)
          ? duration.enter
          : duration;
        this.status = 'enter';
        this.$emit('before-enter');
        Promise.resolve()
          .then(nextTick)
          .then(function () {
            _this.checkStatus('enter');
            _this.$emit('enter');
            _this.setData({
              inited: true,
              display: true,
              classes: classNames.enter,
              currentDuration: currentDuration,
            });
          })
          .then(nextTick)
          .then(function () {
            _this.checkStatus('enter');
            _this.transitionEnded = false;
            _this.setData({
              classes: classNames['enter-to'],
            });
          })
          .catch(function () {});
      },
      leave: function () {
        var _this = this;
        if (!this.data.display) {
          return;
        }
        var _a = this.data,
          duration = _a.duration,
          name = _a.name;
        var classNames = getClassNames(name);
        var currentDuration = utils_1.isObj(duration)
          ? duration.leave
          : duration;
        this.status = 'leave';
        this.$emit('before-leave');
        Promise.resolve()
          .then(nextTick)
          .then(function () {
            _this.checkStatus('leave');
            _this.$emit('leave');
            _this.setData({
              classes: classNames.leave,
              currentDuration: currentDuration,
            });
          })
          .then(nextTick)
          .then(function () {
            _this.checkStatus('leave');
            _this.transitionEnded = false;
            setTimeout(function () {
              return _this.onTransitionEnd();
            }, currentDuration);
            _this.setData({
              classes: classNames['leave-to'],
            });
          })
          .catch(function () {});
      },
      checkStatus: function (status) {
        if (status !== this.status) {
          throw new Error('incongruent status: ' + status);
        }
      },
      onTransitionEnd: function () {
        if (this.transitionEnded) {
          return;
        }
        this.transitionEnded = true;
        this.$emit('after-' + this.status);
        var _a = this.data,
          show = _a.show,
          display = _a.display;
        if (!show && display) {
          this.setData({ display: false });
        }
      },
    },
  });
};