import { defineComponent, inject, ref, nextTick, onMounted, onBeforeUnmount, onUpdated, watch, computed, createVNode, Fragment } from 'vue';
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import { useResizeObserver } from '@vueuse/core';
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import '../../../utils/index.mjs';
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import '../../../hooks/index.mjs';
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import { formContextKey, formItemContextKey } from './constants.mjs';
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import { throwError } from '../../../utils/error.mjs';
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import { useNamespace } from '../../../hooks/use-namespace/index.mjs';
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const COMPONENT_NAME = "ElLabelWrap";
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var FormLabelWrap = defineComponent({
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name: COMPONENT_NAME,
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props: {
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isAutoWidth: Boolean,
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updateAll: Boolean
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},
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setup(props, {
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slots
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}) {
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const formContext = inject(formContextKey, void 0);
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const formItemContext = inject(formItemContextKey);
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if (!formItemContext)
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throwError(COMPONENT_NAME, "usage: <el-form-item><label-wrap /></el-form-item>");
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const ns = useNamespace("form");
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const el = ref();
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const computedWidth = ref(0);
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const getLabelWidth = () => {
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var _a;
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if ((_a = el.value) == null ? void 0 : _a.firstElementChild) {
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const width = window.getComputedStyle(el.value.firstElementChild).width;
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return Math.ceil(Number.parseFloat(width));
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} else {
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return 0;
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}
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};
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const updateLabelWidth = (action = "update") => {
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nextTick(() => {
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if (slots.default && props.isAutoWidth) {
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if (action === "update") {
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computedWidth.value = getLabelWidth();
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} else if (action === "remove") {
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formContext == null ? void 0 : formContext.deregisterLabelWidth(computedWidth.value);
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}
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}
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});
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};
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const updateLabelWidthFn = () => updateLabelWidth("update");
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onMounted(() => {
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updateLabelWidthFn();
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});
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onBeforeUnmount(() => {
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updateLabelWidth("remove");
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});
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onUpdated(() => updateLabelWidthFn());
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watch(computedWidth, (val, oldVal) => {
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if (props.updateAll) {
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formContext == null ? void 0 : formContext.registerLabelWidth(val, oldVal);
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}
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});
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useResizeObserver(computed(() => {
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var _a, _b;
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return (_b = (_a = el.value) == null ? void 0 : _a.firstElementChild) != null ? _b : null;
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}), updateLabelWidthFn);
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return () => {
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var _a, _b;
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if (!slots)
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return null;
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const {
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isAutoWidth
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} = props;
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if (isAutoWidth) {
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const autoLabelWidth = formContext == null ? void 0 : formContext.autoLabelWidth;
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const hasLabel = formItemContext == null ? void 0 : formItemContext.hasLabel;
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const style = {};
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if (hasLabel && autoLabelWidth && autoLabelWidth !== "auto") {
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const marginWidth = Math.max(0, Number.parseInt(autoLabelWidth, 10) - computedWidth.value);
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const marginPosition = formContext.labelPosition === "left" ? "marginRight" : "marginLeft";
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if (marginWidth) {
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style[marginPosition] = `${marginWidth}px`;
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}
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}
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return createVNode("div", {
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"ref": el,
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"class": [ns.be("item", "label-wrap")],
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"style": style
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}, [(_a = slots.default) == null ? void 0 : _a.call(slots)]);
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} else {
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return createVNode(Fragment, {
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"ref": el
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}, [(_b = slots.default) == null ? void 0 : _b.call(slots)]);
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}
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};
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}
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});
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export { FormLabelWrap as default };
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//# sourceMappingURL=form-label-wrap.mjs.map
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