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Styles\nimport './VFileInput.sass'\n\n// Extensions\nimport VTextField from '../VTextField'\n\n// Components\nimport { VChip } from '../VChip'\n\n// Types\nimport { PropValidator } from 'vue/types/options'\n\n// Utilities\nimport { deepEqual, humanReadableFileSize, wrapInArray } from '../../util/helpers'\nimport { consoleError } from '../../util/console'\nimport { mergeStyles } from '../../util/mergeData'\n\nexport default VTextField.extend({\n  name: 'v-file-input',\n\n  model: {\n    prop: 'value',\n    event: 'change',\n  },\n\n  props: {\n    chips: Boolean,\n    clearable: {\n      type: Boolean,\n      default: true,\n    },\n    counterSizeString: {\n      type: String,\n      default: '$vuetify.fileInput.counterSize',\n    },\n    counterString: {\n      type: String,\n      default: '$vuetify.fileInput.counter',\n    },\n    hideInput: Boolean,\n    placeholder: String,\n    prependIcon: {\n      type: String,\n      default: '$file',\n    },\n    readonly: {\n      type: Boolean,\n      default: false,\n    },\n    showSize: {\n      type: [Boolean, Number],\n      default: false,\n      validator: (v: boolean | number) => {\n        return (\n          typeof v === 'boolean' ||\n          [1000, 1024].includes(v)\n        )\n      },\n    } as PropValidator<boolean | 1000 | 1024>,\n    smallChips: Boolean,\n    truncateLength: {\n      type: [Number, String],\n      default: 22,\n    },\n    type: {\n      type: String,\n      default: 'file',\n    },\n    value: {\n      default: undefined,\n      validator: val => {\n        return wrapInArray(val).every(v => v != null && typeof v === 'object')\n      },\n    } as PropValidator<File | File[]>,\n  },\n\n  computed: {\n    classes (): object {\n      return {\n        ...VTextField.options.computed.classes.call(this),\n        'v-file-input': true,\n      }\n    },\n    computedCounterValue (): string {\n      const fileCount = (this.isMultiple && this.lazyValue)\n        ? this.lazyValue.length\n        : (this.lazyValue instanceof File) ? 1 : 0\n\n      if (!this.showSize) return this.$vuetify.lang.t(this.counterString, fileCount)\n\n      const bytes = this.internalArrayValue.reduce((bytes: number, { size = 0 }: File) => {\n        return bytes + size\n      }, 0)\n\n      return this.$vuetify.lang.t(\n        this.counterSizeString,\n        fileCount,\n        humanReadableFileSize(bytes, this.base === 1024)\n      )\n    },\n    internalArrayValue (): File[] {\n      return wrapInArray(this.internalValue)\n    },\n    internalValue: {\n      get (): File[] {\n        return this.lazyValue\n      },\n      set (val: File | File[]) {\n        this.lazyValue = val\n        this.$emit('change', this.lazyValue)\n      },\n    },\n    isDirty (): boolean {\n      return this.internalArrayValue.length > 0\n    },\n    isLabelActive (): boolean {\n      return this.isDirty\n    },\n    isMultiple (): boolean {\n      return this.$attrs.hasOwnProperty('multiple')\n    },\n    text (): string[] {\n      if (!this.isDirty && (this.isFocused || !this.hasLabel)) return [this.placeholder]\n\n      return this.internalArrayValue.map((file: File) => {\n        const {\n          name = '',\n          size = 0,\n        } = file\n\n        const truncatedText = this.truncateText(name)\n\n        return !this.showSize\n          ? truncatedText\n          : `${truncatedText} (${humanReadableFileSize(size, this.base === 1024)})`\n      })\n    },\n    base (): 1000 | 1024 | undefined {\n      return typeof this.showSize !== 'boolean' ? this.showSize : undefined\n    },\n    hasChips (): boolean {\n      return this.chips || this.smallChips\n    },\n  },\n\n  watch: {\n    readonly: {\n      handler (v) {\n        if (v === true) consoleError('readonly is not supported on <v-file-input>', this)\n      },\n      immediate: true,\n    },\n    value (v) {\n      const value = this.isMultiple ? v : v ? [v] : []\n      if (!deepEqual(value, this.$refs.input.files)) {\n        // When the input value is changed programatically, clear the\n        // internal input's value so that the `onInput` handler\n        // can be triggered again if the user re-selects the exact\n        // same file(s). Ideally, `input.files` should be\n        // manipulated directly but that property is readonly.\n        this.$refs.input.value = ''\n      }\n    },\n  },\n\n  methods: {\n    clearableCallback () {\n      this.internalValue = this.isMultiple ? [] : null\n      this.$refs.input.value = ''\n    },\n    genChips () {\n      if (!this.isDirty) return []\n\n      return this.text.map((text, index) => this.$createElement(VChip, {\n        props: { small: this.smallChips },\n        on: {\n          'click:close': () => {\n            const internalValue = this.internalValue\n            internalValue.splice(index, 1)\n            this.internalValue = internalValue // Trigger the watcher\n          },\n        },\n      }, [text]))\n    },\n    genControl () {\n      const render = VTextField.options.methods.genControl.call(this)\n\n      if (this.hideInput) {\n        render.data!.style = mergeStyles(\n          render.data!.style,\n          { display: 'none' }\n        )\n      }\n\n      return render\n    },\n    genInput () {\n      const input = VTextField.options.methods.genInput.call(this)\n\n      // We should not be setting value\n      // programmatically on the input\n      // when it is using type=\"file\"\n      delete input.data!.domProps!.value\n\n      // This solves an issue in Safari where\n      // nothing happens when adding a file\n      // do to the input event not firing\n      // https://github.com/vuetifyjs/vuetify/issues/7941\n      delete input.data!.on!.input\n      input.data!.on!.change = this.onInput\n\n      return [this.genSelections(), input]\n    },\n    genPrependSlot () {\n      if (!this.prependIcon) return null\n\n      const icon = this.genIcon('prepend', () => {\n        this.$refs.input.click()\n      })\n\n      return this.genSlot('prepend', 'outer', [icon])\n    },\n    genSelectionText (): string[] {\n      const length = this.text.length\n\n      if (length < 2) return this.text\n      if (this.showSize && !this.counter) return [this.computedCounterValue]\n      return [this.$vuetify.lang.t(this.counterString, length)]\n    },\n    genSelections () {\n      const children = []\n\n      if (this.isDirty && this.$scopedSlots.selection) {\n        this.internalArrayValue.forEach((file: File, index: number) => {\n          if (!this.$scopedSlots.selection) return\n\n          children.push(\n            this.$scopedSlots.selection({\n              text: this.text[index],\n              file,\n              index,\n            })\n          )\n        })\n      } else {\n        children.push(this.hasChips && this.isDirty ? this.genChips() : this.genSelectionText())\n      }\n\n      return this.$createElement('div', {\n        staticClass: 'v-file-input__text',\n        class: {\n          'v-file-input__text--placeholder': this.placeholder && !this.isDirty,\n          'v-file-input__text--chips': this.hasChips && !this.$scopedSlots.selection,\n        },\n      }, children)\n    },\n    genTextFieldSlot () {\n      const node = VTextField.options.methods.genTextFieldSlot.call(this)\n\n      node.data!.on = {\n        ...(node.data!.on || {}),\n        click: () => this.$refs.input.click(),\n      }\n\n      return node\n    },\n    onInput (e: Event) {\n      const files = [...(e.target as HTMLInputElement).files || []]\n\n      this.internalValue = this.isMultiple ? files : files[0]\n\n      // Set initialValue here otherwise isFocused\n      // watcher in VTextField will emit a change\n      // event whenever the component is blurred\n      this.initialValue = this.internalValue\n    },\n    onKeyDown (e: KeyboardEvent) {\n      this.$emit('keydown', e)\n    },\n    truncateText (str: string) {\n      if (str.length < Number(this.truncateLength)) return str\n      const charsKeepOneSide = Math.floor((Number(this.truncateLength) - 1) / 2)\n      return `${str.slice(0, charsKeepOneSide)}…${str.slice(str.length - charsKeepOneSide)}`\n    },\n  },\n})\n"],"sourceRoot":"","file":"VFileInput.js"}