import { c as createNamespace, k as isDef, e as extend, s as clamp, n as numericProp, M as makeRequiredProp, o as makeArrayProp, a as useParent, D as useEventListener, p as preventDefault, H as HAPTICS_FEEDBACK, m as makeNumericProp, t as truthProp, z as makeStringProp, u as useChildren, U as unitToPx, x as isSameValue, y as pick, V as BORDER_UNSET_TOP_BOTTOM, w as withInstall } from "./index-487cde8c.js";
import { u as useExpose } from "./use-scope-id-0b5b8615.js";
import { L as Loading } from "./index-217c49a0.js";
import { u as useTouch } from "./index-eef3af38.js";
import { d as defineComponent, r as ref, a as computed, S as watchEffect, c as createVNode, w as watch, m as mergeProps, z as nextTick } from "./index-5e4623ce.js";
const [name$3, bem$2, t] = createNamespace("picker");
const getFirstEnabledOption = (options) => options.find((option) => !option.disabled) || options[0];
function getColumnsType(columns, fields) {
  const firstColumn = columns[0];
  if (firstColumn) {
    if (Array.isArray(firstColumn)) {
      return "multiple";
    }
    if (fields.children in firstColumn) {
      return "cascade";
    }
  }
  return "default";
}
function findIndexOfEnabledOption(options, index2) {
  index2 = clamp(index2, 0, options.length);
  for (let i = index2; i < options.length; i++) {
    if (!options[i].disabled)
      return i;
  }
  for (let i = index2 - 1; i >= 0; i--) {
    if (!options[i].disabled)
      return i;
  }
  return 0;
}
const isOptionExist = (options, value, fields) => value !== void 0 && !!options.find((option) => option[fields.value] === value);
function findOptionByValue(options, value, fields) {
  const index2 = options.findIndex((option) => option[fields.value] === value);
  const enabledIndex = findIndexOfEnabledOption(options, index2);
  return options[enabledIndex];
}
function formatCascadeColumns(columns, fields, selectedValues) {
  const formatted = [];
  let cursor = {
    [fields.children]: columns
  };
  let columnIndex = 0;
  while (cursor && cursor[fields.children]) {
    const options = cursor[fields.children];
    const value = selectedValues.value[columnIndex];
    cursor = isDef(value) ? findOptionByValue(options, value, fields) : void 0;
    if (!cursor && options.length) {
      const firstValue = getFirstEnabledOption(options)[fields.value];
      cursor = findOptionByValue(options, firstValue, fields);
    }
    columnIndex++;
    formatted.push(options);
  }
  return formatted;
}
function getElementTranslateY(element) {
  const { transform } = window.getComputedStyle(element);
  const translateY = transform.slice(7, transform.length - 1).split(", ")[5];
  return Number(translateY);
}
function assignDefaultFields(fields) {
  return extend(
    {
      text: "text",
      value: "value",
      children: "children"
    },
    fields
  );
}
const DEFAULT_DURATION = 200;
const MOMENTUM_TIME = 300;
const MOMENTUM_DISTANCE = 15;
const [name$2, bem$1] = createNamespace("picker-column");
const PICKER_KEY = Symbol(name$2);
var stdin_default$2 = defineComponent({
  name: name$2,
  props: {
    value: numericProp,
    fields: makeRequiredProp(Object),
    options: makeArrayProp(),
    readonly: Boolean,
    allowHtml: Boolean,
    optionHeight: makeRequiredProp(Number),
    swipeDuration: makeRequiredProp(numericProp),
    visibleOptionNum: makeRequiredProp(numericProp)
  },
  emits: ["change", "clickOption", "scrollInto"],
  setup(props, {
    emit,
    slots
  }) {
    let moving;
    let startOffset;
    let touchStartTime;
    let momentumOffset;
    let transitionEndTrigger;
    const root = ref();
    const wrapper = ref();
    const currentOffset = ref(0);
    const currentDuration = ref(0);
    const touch = useTouch();
    const count = () => props.options.length;
    const baseOffset = () => props.optionHeight * (+props.visibleOptionNum - 1) / 2;
    const updateValueByIndex = (index2) => {
      let enabledIndex = findIndexOfEnabledOption(props.options, index2);
      const offset = -enabledIndex * props.optionHeight;
      const trigger = () => {
        if (enabledIndex > count() - 1) {
          enabledIndex = findIndexOfEnabledOption(props.options, index2);
        }
        const value = props.options[enabledIndex][props.fields.value];
        if (value !== props.value) {
          emit("change", value);
        }
      };
      if (moving && offset !== currentOffset.value) {
        transitionEndTrigger = trigger;
      } else {
        trigger();
      }
      currentOffset.value = offset;
    };
    const isReadonly = () => props.readonly || !props.options.length;
    const onClickOption = (index2) => {
      if (moving || isReadonly()) {
        return;
      }
      transitionEndTrigger = null;
      currentDuration.value = DEFAULT_DURATION;
      updateValueByIndex(index2);
      emit("clickOption", props.options[index2]);
    };
    const getIndexByOffset = (offset) => clamp(Math.round(-offset / props.optionHeight), 0, count() - 1);
    const currentIndex = computed(() => getIndexByOffset(currentOffset.value));
    const momentum = (distance, duration) => {
      const speed = Math.abs(distance / duration);
      distance = currentOffset.value + speed / 3e-3 * (distance < 0 ? -1 : 1);
      const index2 = getIndexByOffset(distance);
      currentDuration.value = +props.swipeDuration;
      updateValueByIndex(index2);
    };
    const stopMomentum = () => {
      moving = false;
      currentDuration.value = 0;
      if (transitionEndTrigger) {
        transitionEndTrigger();
        transitionEndTrigger = null;
      }
    };
    const onTouchStart = (event) => {
      if (isReadonly()) {
        return;
      }
      touch.start(event);
      if (moving) {
        const translateY = getElementTranslateY(wrapper.value);
        currentOffset.value = Math.min(0, translateY - baseOffset());
      }
      currentDuration.value = 0;
      startOffset = currentOffset.value;
      touchStartTime = Date.now();
      momentumOffset = startOffset;
      transitionEndTrigger = null;
    };
    const onTouchMove = (event) => {
      if (isReadonly()) {
        return;
      }
      touch.move(event);
      if (touch.isVertical()) {
        moving = true;
        preventDefault(event, true);
      }
      const newOffset = clamp(startOffset + touch.deltaY.value, -(count() * props.optionHeight), props.optionHeight);
      const newIndex = getIndexByOffset(newOffset);
      if (newIndex !== currentIndex.value) {
        emit("scrollInto", props.options[newIndex]);
      }
      currentOffset.value = newOffset;
      const now = Date.now();
      if (now - touchStartTime > MOMENTUM_TIME) {
        touchStartTime = now;
        momentumOffset = newOffset;
      }
    };
    const onTouchEnd = () => {
      if (isReadonly()) {
        return;
      }
      const distance = currentOffset.value - momentumOffset;
      const duration = Date.now() - touchStartTime;
      const startMomentum = duration < MOMENTUM_TIME && Math.abs(distance) > MOMENTUM_DISTANCE;
      if (startMomentum) {
        momentum(distance, duration);
        return;
      }
      const index2 = getIndexByOffset(currentOffset.value);
      currentDuration.value = DEFAULT_DURATION;
      updateValueByIndex(index2);
      setTimeout(() => {
        moving = false;
      }, 0);
    };
    const renderOptions = () => {
      const optionStyle = {
        height: `${props.optionHeight}px`
      };
      return props.options.map((option, index2) => {
        const text = option[props.fields.text];
        const {
          disabled
        } = option;
        const value = option[props.fields.value];
        const data = {
          role: "button",
          style: optionStyle,
          tabindex: disabled ? -1 : 0,
          class: [bem$1("item", {
            disabled,
            selected: value === props.value
          }), option.className],
          onClick: () => onClickOption(index2)
        };
        const childData = {
          class: "van-ellipsis",
          [props.allowHtml ? "innerHTML" : "textContent"]: text
        };
        return createVNode("li", data, [slots.option ? slots.option(option, index2) : createVNode("div", childData, null)]);
      });
    };
    useParent(PICKER_KEY);
    useExpose({
      stopMomentum
    });
    watchEffect(() => {
      const index2 = moving ? Math.floor(-currentOffset.value / props.optionHeight) : props.options.findIndex((option) => option[props.fields.value] === props.value);
      const enabledIndex = findIndexOfEnabledOption(props.options, index2);
      const offset = -enabledIndex * props.optionHeight;
      if (moving && enabledIndex < index2)
        stopMomentum();
      currentOffset.value = offset;
    });
    useEventListener("touchmove", onTouchMove, {
      target: root
    });
    return () => createVNode("div", {
      "ref": root,
      "class": bem$1(),
      "onTouchstartPassive": onTouchStart,
      "onTouchend": onTouchEnd,
      "onTouchcancel": onTouchEnd
    }, [createVNode("ul", {
      "ref": wrapper,
      "style": {
        transform: `translate3d(0, ${currentOffset.value + baseOffset()}px, 0)`,
        transitionDuration: `${currentDuration.value}ms`,
        transitionProperty: currentDuration.value ? "all" : "none"
      },
      "class": bem$1("wrapper"),
      "onTransitionend": stopMomentum
    }, [renderOptions()])]);
  }
});
const [name$1] = createNamespace("picker-toolbar");
const pickerToolbarProps = {
  title: String,
  cancelButtonText: String,
  confirmButtonText: String
};
const pickerToolbarSlots = ["cancel", "confirm", "title", "toolbar"];
const pickerToolbarPropKeys = Object.keys(pickerToolbarProps);
var stdin_default$1 = defineComponent({
  name: name$1,
  props: pickerToolbarProps,
  emits: ["confirm", "cancel"],
  setup(props, {
    emit,
    slots
  }) {
    const renderTitle = () => {
      if (slots.title) {
        return slots.title();
      }
      if (props.title) {
        return createVNode("div", {
          "class": [bem$2("title"), "van-ellipsis"]
        }, [props.title]);
      }
    };
    const onCancel = () => emit("cancel");
    const onConfirm = () => emit("confirm");
    const renderCancel = () => {
      var _a;
      const text = (_a = props.cancelButtonText) != null ? _a : t("cancel");
      if (!slots.cancel && !text) {
        return;
      }
      return createVNode("button", {
        "type": "button",
        "class": [bem$2("cancel"), HAPTICS_FEEDBACK],
        "onClick": onCancel
      }, [slots.cancel ? slots.cancel() : text]);
    };
    const renderConfirm = () => {
      var _a;
      const text = (_a = props.confirmButtonText) != null ? _a : t("confirm");
      if (!slots.confirm && !text) {
        return;
      }
      return createVNode("button", {
        "type": "button",
        "class": [bem$2("confirm"), HAPTICS_FEEDBACK],
        "onClick": onConfirm
      }, [slots.confirm ? slots.confirm() : text]);
    };
    return () => createVNode("div", {
      "class": bem$2("toolbar")
    }, [slots.toolbar ? slots.toolbar() : [renderCancel(), renderTitle(), renderConfirm()]]);
  }
});
const [name, bem] = createNamespace("picker-group");
const PICKER_GROUP_KEY = Symbol(name);
extend({
  tabs: makeArrayProp(),
  activeTab: makeNumericProp(0),
  nextStepText: String,
  showToolbar: truthProp
}, pickerToolbarProps);
const pickerSharedProps = extend({
  loading: Boolean,
  readonly: Boolean,
  allowHtml: Boolean,
  optionHeight: makeNumericProp(44),
  showToolbar: truthProp,
  swipeDuration: makeNumericProp(1e3),
  visibleOptionNum: makeNumericProp(6)
}, pickerToolbarProps);
const pickerProps = extend({}, pickerSharedProps, {
  columns: makeArrayProp(),
  modelValue: makeArrayProp(),
  toolbarPosition: makeStringProp("top"),
  columnsFieldNames: Object
});
var stdin_default = defineComponent({
  name: name$3,
  props: pickerProps,
  emits: ["confirm", "cancel", "change", "scrollInto", "clickOption", "update:modelValue"],
  setup(props, {
    emit,
    slots
  }) {
    const columnsRef = ref();
    const selectedValues = ref(props.modelValue.slice(0));
    const {
      parent
    } = useParent(PICKER_GROUP_KEY);
    const {
      children,
      linkChildren
    } = useChildren(PICKER_KEY);
    linkChildren();
    const fields = computed(() => assignDefaultFields(props.columnsFieldNames));
    const optionHeight = computed(() => unitToPx(props.optionHeight));
    const columnsType = computed(() => getColumnsType(props.columns, fields.value));
    const currentColumns = computed(() => {
      const {
        columns
      } = props;
      switch (columnsType.value) {
        case "multiple":
          return columns;
        case "cascade":
          return formatCascadeColumns(columns, fields.value, selectedValues);
        default:
          return [columns];
      }
    });
    const hasOptions = computed(() => currentColumns.value.some((options) => options.length));
    const selectedOptions = computed(() => currentColumns.value.map((options, index2) => findOptionByValue(options, selectedValues.value[index2], fields.value)));
    const selectedIndexes = computed(() => currentColumns.value.map((options, index2) => options.findIndex((option) => option[fields.value.value] === selectedValues.value[index2])));
    const setValue = (index2, value) => {
      if (selectedValues.value[index2] !== value) {
        const newValues = selectedValues.value.slice(0);
        newValues[index2] = value;
        selectedValues.value = newValues;
      }
    };
    const getEventParams = () => ({
      selectedValues: selectedValues.value.slice(0),
      selectedOptions: selectedOptions.value,
      selectedIndexes: selectedIndexes.value
    });
    const onChange = (value, columnIndex) => {
      setValue(columnIndex, value);
      if (columnsType.value === "cascade") {
        selectedValues.value.forEach((value2, index2) => {
          const options = currentColumns.value[index2];
          if (!isOptionExist(options, value2, fields.value)) {
            setValue(index2, options.length ? options[0][fields.value.value] : void 0);
          }
        });
      }
      nextTick(() => {
        emit("change", extend({
          columnIndex
        }, getEventParams()));
      });
    };
    const onClickOption = (currentOption, columnIndex) => {
      const params = {
        columnIndex,
        currentOption
      };
      emit("clickOption", extend(getEventParams(), params));
      emit("scrollInto", params);
    };
    const confirm = () => {
      children.forEach((child) => child.stopMomentum());
      const params = getEventParams();
      nextTick(() => {
        emit("confirm", params);
      });
      return params;
    };
    const cancel = () => emit("cancel", getEventParams());
    const renderColumnItems = () => currentColumns.value.map((options, columnIndex) => createVNode(stdin_default$2, {
      "value": selectedValues.value[columnIndex],
      "fields": fields.value,
      "options": options,
      "readonly": props.readonly,
      "allowHtml": props.allowHtml,
      "optionHeight": optionHeight.value,
      "swipeDuration": props.swipeDuration,
      "visibleOptionNum": props.visibleOptionNum,
      "onChange": (value) => onChange(value, columnIndex),
      "onClickOption": (option) => onClickOption(option, columnIndex),
      "onScrollInto": (option) => {
        emit("scrollInto", {
          currentOption: option,
          columnIndex
        });
      }
    }, {
      option: slots.option
    }));
    const renderMask = (wrapHeight) => {
      if (hasOptions.value) {
        const frameStyle = {
          height: `${optionHeight.value}px`
        };
        const maskStyle = {
          backgroundSize: `100% ${(wrapHeight - optionHeight.value) / 2}px`
        };
        return [createVNode("div", {
          "class": bem$2("mask"),
          "style": maskStyle
        }, null), createVNode("div", {
          "class": [BORDER_UNSET_TOP_BOTTOM, bem$2("frame")],
          "style": frameStyle
        }, null)];
      }
    };
    const renderColumns = () => {
      const wrapHeight = optionHeight.value * +props.visibleOptionNum;
      const columnsStyle = {
        height: `${wrapHeight}px`
      };
      return createVNode("div", {
        "ref": columnsRef,
        "class": bem$2("columns"),
        "style": columnsStyle
      }, [renderColumnItems(), renderMask(wrapHeight)]);
    };
    const renderToolbar = () => {
      if (props.showToolbar && !parent) {
        return createVNode(stdin_default$1, mergeProps(pick(props, pickerToolbarPropKeys), {
          "onConfirm": confirm,
          "onCancel": cancel
        }), pick(slots, pickerToolbarSlots));
      }
    };
    watch(currentColumns, (columns) => {
      columns.forEach((options, index2) => {
        if (options.length && !isOptionExist(options, selectedValues.value[index2], fields.value)) {
          setValue(index2, getFirstEnabledOption(options)[fields.value.value]);
        }
      });
    }, {
      immediate: true
    });
    let lastEmittedModelValue;
    watch(() => props.modelValue, (newValues) => {
      if (!isSameValue(newValues, selectedValues.value) && !isSameValue(newValues, lastEmittedModelValue)) {
        selectedValues.value = newValues.slice(0);
        lastEmittedModelValue = newValues.slice(0);
      }
    }, {
      deep: true
    });
    watch(selectedValues, (newValues) => {
      if (!isSameValue(newValues, props.modelValue)) {
        lastEmittedModelValue = newValues.slice(0);
        emit("update:modelValue", lastEmittedModelValue);
      }
    }, {
      immediate: true
    });
    useEventListener("touchmove", preventDefault, {
      target: columnsRef
    });
    const getSelectedOptions = () => selectedOptions.value;
    useExpose({
      confirm,
      getSelectedOptions
    });
    return () => {
      var _a, _b;
      return createVNode("div", {
        "class": bem$2()
      }, [props.toolbarPosition === "top" ? renderToolbar() : null, props.loading ? createVNode(Loading, {
        "class": bem$2("loading")
      }, null) : null, (_a = slots["columns-top"]) == null ? void 0 : _a.call(slots), renderColumns(), (_b = slots["columns-bottom"]) == null ? void 0 : _b.call(slots), props.toolbarPosition === "bottom" ? renderToolbar() : null]);
    };
  }
});
const Picker = withInstall(stdin_default);
const index$6 = "";
const index$5 = "";
const index$4 = "";
const index$3 = "";
const index$2 = "";
const index$1 = "";
const index = "";
export {
  Picker as P,
  pickerSharedProps as p
};