// Styles
import "..\\..\\..\\src\\components\\VTextarea\\VTextarea.sass"; // Extensions

import VTextField from '../VTextField/VTextField'; // Utilities

import mixins from '../../util/mixins';
const baseMixins = mixins(VTextField);
/* @vue/component */

export default baseMixins.extend({
  name: 'v-textarea',
  props: {
    autoGrow: Boolean,
    noResize: Boolean,
    rowHeight: {
      type: [Number, String],
      default: 24,
      validator: v => !isNaN(parseFloat(v))
    },
    rows: {
      type: [Number, String],
      default: 5,
      validator: v => !isNaN(parseInt(v, 10))
    }
  },
  computed: {
    classes() {
      return {
        'v-textarea': true,
        'v-textarea--auto-grow': this.autoGrow,
        'v-textarea--no-resize': this.noResizeHandle,
        ...VTextField.options.computed.classes.call(this)
      };
    },

    noResizeHandle() {
      return this.noResize || this.autoGrow;
    }

  },
  watch: {
    autoGrow(val) {
      this.$nextTick(() => {
        var _a;

        val ? this.calculateInputHeight() : (_a = this.$refs.input) === null || _a === void 0 ? void 0 : _a.style.removeProperty('height');
      });
    },

    lazyValue() {
      this.autoGrow && this.$nextTick(this.calculateInputHeight);
    },

    rowHeight() {
      this.autoGrow && this.$nextTick(this.calculateInputHeight);
    }

  },

  mounted() {
    setTimeout(() => {
      this.autoGrow && this.calculateInputHeight();
    }, 0);
  },

  methods: {
    calculateInputHeight() {
      const input = this.$refs.input;
      if (!input) return;
      input.style.height = '0';
      const height = input.scrollHeight;
      const minHeight = parseInt(this.rows, 10) * parseFloat(this.rowHeight); // This has to be done ASAP, waiting for Vue
      // to update the DOM causes ugly layout jumping

      input.style.height = Math.max(minHeight, height) + 'px';
    },

    genInput() {
      const input = VTextField.options.methods.genInput.call(this);
      input.tag = 'textarea';
      delete input.data.attrs.type;
      input.data.attrs.rows = this.rows;
      return input;
    },

    onInput(e) {
      VTextField.options.methods.onInput.call(this, e);
      this.autoGrow && this.calculateInputHeight();
    },

    onKeyDown(e) {
      // Prevents closing of a
      // dialog when pressing
      // enter
      if (this.isFocused && e.keyCode === 13) {
        e.stopPropagation();
      }

      this.$emit('keydown', e);
    }

  }
});
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