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

import VSelect from '../VSelect/VSelect';
import VAutocomplete from '../VAutocomplete';
import VTextField from '../VTextField/VTextField'; // Components

import VBtn from '../VBtn'; // Utilities

import { consoleWarn } from '../../util/console';
/* @vue/component */

export default VAutocomplete.extend({
  name: 'v-overflow-btn',
  props: {
    editable: Boolean,
    segmented: Boolean
  },
  computed: {
    classes() {
      return { ...VAutocomplete.options.computed.classes.call(this),
        'v-overflow-btn': true,
        'v-overflow-btn--segmented': this.segmented,
        'v-overflow-btn--editable': this.editable
      };
    },

    isAnyValueAllowed() {
      return this.editable || VAutocomplete.options.computed.isAnyValueAllowed.call(this);
    },

    isSingle() {
      return true;
    },

    computedItems() {
      return this.segmented ? this.allItems : this.filteredItems;
    },

    labelValue() {
      return this.isFocused && !this.persistentPlaceholder || this.isLabelActive;
    }

  },
  methods: {
    genSelections() {
      return this.editable ? VAutocomplete.options.methods.genSelections.call(this) : VSelect.options.methods.genSelections.call(this); // Override v-autocomplete's override
    },

    genCommaSelection(item, index, last) {
      return this.segmented ? this.genSegmentedBtn(item) : VSelect.options.methods.genCommaSelection.call(this, item, index, last);
    },

    genInput() {
      const input = VTextField.options.methods.genInput.call(this);
      input.data = input.data || {};
      input.data.domProps.value = this.editable ? this.internalSearch : '';
      input.data.attrs.readonly = !this.isAnyValueAllowed;
      return input;
    },

    genLabel() {
      if (this.editable && this.isFocused) return null;
      const label = VTextField.options.methods.genLabel.call(this);
      if (!label) return label;
      label.data = label.data || {}; // Reset previously set styles from parent

      label.data.style = {};
      return label;
    },

    genSegmentedBtn(item) {
      const itemValue = this.getValue(item);
      const itemObj = this.computedItems.find(i => this.getValue(i) === itemValue) || item;

      if (!itemObj.text || !itemObj.callback) {
        consoleWarn('When using "segmented" prop without a selection slot, items must contain both a text and callback property', this);
        return null;
      }

      return this.$createElement(VBtn, {
        props: {
          text: true
        },
        on: {
          click(e) {
            e.stopPropagation();
            itemObj.callback(e);
          }

        }
      }, [itemObj.text]);
    },

    updateValue(val) {
      if (val) {
        this.initialValue = this.lazyValue;
      } else if (this.initialValue !== this.lazyValue) {
        this.$emit('change', this.lazyValue);
      }
    }

  }
});
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