video_admin_vue/node_modules/vant/es/stepper/index.js

import { use, isDef } from '../utils';

var _use = use('stepper'),
    sfc = _use[0],
    bem = _use[1];

export default sfc({
  props: {
    value: null,
    integer: Boolean,
    disabled: Boolean,
    inputWidth: String,
    asyncChange: Boolean,
    disableInput: Boolean,
    min: {
      type: [String, Number],
      "default": 1
    },
    max: {
      type: [String, Number],
      "default": Infinity
    },
    step: {
      type: [String, Number],
      "default": 1
    },
    defaultValue: {
      type: [String, Number],
      "default": 1
    }
  },
  data: function data() {
    var value = this.range(isDef(this.value) ? this.value : this.defaultValue);

    if (value !== +this.value) {
      this.$emit('input', value);
    }

    return {
      currentValue: value
    };
  },
  computed: {
    minusDisabled: function minusDisabled() {
      return this.disabled || this.currentValue <= this.min;
    },
    plusDisabled: function plusDisabled() {
      return this.disabled || this.currentValue >= this.max;
    }
  },
  watch: {
    value: function value(val) {
      if (val !== this.currentValue) {
        this.currentValue = this.format(val);
      }
    },
    currentValue: function currentValue(val) {
      this.$emit('input', val);
      this.$emit('change', val);
    }
  },
  methods: {
    // filter illegal characters
    format: function format(value) {
      value = String(value).replace(/[^0-9.-]/g, '');
      return value === '' ? 0 : this.integer ? Math.floor(value) : +value;
    },
    // limit value range
    range: function range(value) {
      return Math.max(Math.min(this.max, this.format(value)), this.min);
    },
    onInput: function onInput(event) {
      var value = event.target.value;
      var formatted = this.format(value);

      if (!this.asyncChange) {
        if (+value !== formatted) {
          event.target.value = formatted;
        }

        this.currentValue = formatted;
      } else {
        event.target.value = this.currentValue;
        this.$emit('input', formatted);
        this.$emit('change', formatted);
      }
    },
    onChange: function onChange(type) {
      if (this[type + "Disabled"]) {
        this.$emit('overlimit', type);
        return;
      }

      var diff = type === 'minus' ? -this.step : +this.step;
      var value = Math.round((this.currentValue + diff) * 100) / 100;

      if (!this.asyncChange) {
        this.currentValue = this.range(value);
      } else {
        this.$emit('input', value);
        this.$emit('change', value);
      }

      this.$emit(type);
    },
    onFocus: function onFocus(event) {
      this.$emit('focus', event);
    },
    onBlur: function onBlur(event) {
      this.currentValue = this.range(this.currentValue);
      this.$emit('blur', event); // fix edge case when input is empty and min is 0

      if (this.currentValue === 0) {
        event.target.value = this.currentValue;
      }
    }
  },
  render: function render(h) {
    var _this = this;

    var onChange = function onChange(type) {
      return function () {
        _this.onChange(type);
      };
    };

    return h("div", {
      "class": bem()
    }, [h("button", {
      "class": bem('minus', {
        disabled: this.minusDisabled
      }),
      "on": {
        "click": onChange('minus')
      }
    }), h("input", {
      "attrs": {
        "type": "number",
        "disabled": this.disabled || this.disableInput
      },
      "class": bem('input'),
      "domProps": {
        "value": this.currentValue
      },
      "style": {
        width: this.inputWidth
      },
      "on": {
        "input": this.onInput,
        "focus": this.onFocus,
        "blur": this.onBlur
      }
    }), h("button", {
      "class": bem('plus', {
        disabled: this.plusDisabled
      }),
      "on": {
        "click": onChange('plus')
      }
    })]);
  }
});