element-plus/es/components/checkbox/src/useCheckbox.mjs

A Component Library for Vue 3

import { inject, computed, ref, getCurrentInstance, watch } from 'vue';
import { toTypeString } from '@vue/shared';
import '../../../constants/index.mjs';
import '../../../tokens/index.mjs';
import '../../../hooks/index.mjs';
import '../../../utils/index.mjs';
import { formContextKey, formItemContextKey } from '../../../tokens/form.mjs';
import { UPDATE_MODEL_EVENT } from '../../../constants/event.mjs';
import { useSize } from '../../../hooks/use-common-props/index.mjs';
import { debugWarn } from '../../../utils/error.mjs';

const useCheckboxProps = {
  modelValue: {
    type: [Boolean, Number, String],
    default: () => void 0
  },
  label: {
    type: [String, Boolean, Number, Object]
  },
  indeterminate: Boolean,
  disabled: Boolean,
  checked: Boolean,
  name: {
    type: String,
    default: void 0
  },
  trueLabel: {
    type: [String, Number],
    default: void 0
  },
  falseLabel: {
    type: [String, Number],
    default: void 0
  },
  tabindex: [String, Number],
  size: String
};
const useCheckboxGroup = () => {
  const elForm = inject(formContextKey, {});
  const elFormItem = inject(formItemContextKey, {});
  const checkboxGroup = inject("CheckboxGroup", {});
  const isGroup = computed(() => checkboxGroup && (checkboxGroup == null ? void 0 : checkboxGroup.name) === "ElCheckboxGroup");
  const elFormItemSize = computed(() => {
    return elFormItem.size;
  });
  return {
    isGroup,
    checkboxGroup,
    elForm,
    elFormItemSize,
    elFormItem
  };
};
const useModel = (props) => {
  const selfModel = ref(false);
  const { emit } = getCurrentInstance();
  const { isGroup, checkboxGroup } = useCheckboxGroup();
  const isLimitExceeded = ref(false);
  const model = computed({
    get() {
      var _a, _b;
      return isGroup.value ? (_a = checkboxGroup.modelValue) == null ? void 0 : _a.value : (_b = props.modelValue) != null ? _b : selfModel.value;
    },
    set(val) {
      var _a;
      if (isGroup.value && Array.isArray(val)) {
        isLimitExceeded.value = checkboxGroup.max !== void 0 && val.length > checkboxGroup.max.value;
        isLimitExceeded.value === false && ((_a = checkboxGroup == null ? void 0 : checkboxGroup.changeEvent) == null ? void 0 : _a.call(checkboxGroup, val));
      } else {
        emit(UPDATE_MODEL_EVENT, val);
        selfModel.value = val;
      }
    }
  });
  return {
    model,
    isLimitExceeded
  };
};
const useCheckboxStatus = (props, { model }) => {
  const { isGroup, checkboxGroup } = useCheckboxGroup();
  const focus = ref(false);
  const size = useSize(checkboxGroup == null ? void 0 : checkboxGroup.checkboxGroupSize, { prop: true });
  const isChecked = computed(() => {
    const value = model.value;
    if (toTypeString(value) === "[object Boolean]") {
      return value;
    } else if (Array.isArray(value)) {
      return value.includes(props.label);
    } else if (value !== null && value !== void 0) {
      return value === props.trueLabel;
    } else {
      return !!value;
    }
  });
  const checkboxSize = useSize(computed(() => {
    var _a;
    return isGroup.value ? (_a = checkboxGroup == null ? void 0 : checkboxGroup.checkboxGroupSize) == null ? void 0 : _a.value : void 0;
  }));
  return {
    isChecked,
    focus,
    size,
    checkboxSize
  };
};
const useDisabled = (props, {
  model,
  isChecked
}) => {
  const { elForm, isGroup, checkboxGroup } = useCheckboxGroup();
  const isLimitDisabled = computed(() => {
    var _a, _b;
    const max = (_a = checkboxGroup.max) == null ? void 0 : _a.value;
    const min = (_b = checkboxGroup.min) == null ? void 0 : _b.value;
    return !!(max || min) && model.value.length >= max && !isChecked.value || model.value.length <= min && isChecked.value;
  });
  const isDisabled = computed(() => {
    var _a, _b;
    const disabled = props.disabled || elForm.disabled;
    return (_b = isGroup.value ? ((_a = checkboxGroup.disabled) == null ? void 0 : _a.value) || disabled || isLimitDisabled.value : props.disabled || elForm.disabled) != null ? _b : false;
  });
  return {
    isDisabled,
    isLimitDisabled
  };
};
const setStoreValue = (props, { model }) => {
  function addToStore() {
    if (Array.isArray(model.value) && !model.value.includes(props.label)) {
      model.value.push(props.label);
    } else {
      model.value = props.trueLabel || true;
    }
  }
  props.checked && addToStore();
};
const useEvent = (props, { isLimitExceeded }) => {
  const { elFormItem } = useCheckboxGroup();
  const { emit } = getCurrentInstance();
  function handleChange(e) {
    var _a, _b;
    if (isLimitExceeded.value)
      return;
    const target = e.target;
    const value = target.checked ? (_a = props.trueLabel) != null ? _a : true : (_b = props.falseLabel) != null ? _b : false;
    emit("change", value, e);
  }
  watch(() => props.modelValue, () => {
    var _a;
    (_a = elFormItem.validate) == null ? void 0 : _a.call(elFormItem, "change").catch((err) => debugWarn(err));
  });
  return {
    handleChange
  };
};
const useCheckbox = (props) => {
  const { model, isLimitExceeded } = useModel(props);
  const { focus, size, isChecked, checkboxSize } = useCheckboxStatus(props, {
    model
  });
  const { isDisabled } = useDisabled(props, { model, isChecked });
  const { handleChange } = useEvent(props, { isLimitExceeded });
  setStoreValue(props, { model });
  return {
    isChecked,
    isDisabled,
    checkboxSize,
    model,
    handleChange,
    focus,
    size
  };
};

export { useCheckbox, useCheckboxGroup, useCheckboxProps };
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