88 lines
2.5 KiB
JavaScript
88 lines
2.5 KiB
JavaScript
import { ref, reactive, computed, defineComponent, createVNode as _createVNode } from "vue";
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import { extend, numericProp, BORDER_BOTTOM, getZIndexStyle, createNamespace } from "../utils/index.mjs";
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import { INDEX_BAR_KEY } from "../index-bar/IndexBar.mjs";
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import { getScrollTop, getRootScrollTop } from "../utils/dom.mjs";
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import { useRect, useParent } from "@vant/use";
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import { useExpose } from "../composables/use-expose.mjs";
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const [name, bem] = createNamespace("index-anchor");
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const indexAnchorProps = {
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index: numericProp
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};
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var stdin_default = defineComponent({
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name,
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props: indexAnchorProps,
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setup(props, {
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slots
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}) {
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const state = reactive({
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top: 0,
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left: null,
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rect: {
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top: 0,
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height: 0
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},
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width: null,
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active: false
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});
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const root = ref();
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const {
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parent
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} = useParent(INDEX_BAR_KEY);
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if (!parent) {
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if (process.env.NODE_ENV !== "production") {
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console.error("[Vant] <IndexAnchor> must be a child component of <IndexBar>.");
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}
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return;
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}
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const isSticky = () => state.active && parent.props.sticky;
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const anchorStyle = computed(() => {
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const {
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zIndex,
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highlightColor
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} = parent.props;
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if (isSticky()) {
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return extend(getZIndexStyle(zIndex), {
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left: state.left ? `${state.left}px` : void 0,
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width: state.width ? `${state.width}px` : void 0,
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transform: state.top ? `translate3d(0, ${state.top}px, 0)` : void 0,
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color: highlightColor
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});
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}
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});
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const getRect = (scrollParent, scrollParentRect) => {
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const rootRect = useRect(root);
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state.rect.height = rootRect.height;
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if (scrollParent === window || scrollParent === document.body) {
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state.rect.top = rootRect.top + getRootScrollTop();
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} else {
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state.rect.top = rootRect.top + getScrollTop(scrollParent) - scrollParentRect.top;
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}
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return state.rect;
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};
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useExpose({
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state,
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getRect
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});
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return () => {
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const sticky = isSticky();
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return _createVNode("div", {
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"ref": root,
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"style": {
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height: sticky ? `${state.rect.height}px` : void 0
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}
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}, [_createVNode("div", {
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"style": anchorStyle.value,
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"class": [bem({
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sticky
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}), {
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[BORDER_BOTTOM]: sticky
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}]
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}, [slots.default ? slots.default() : props.index])]);
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};
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}
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});
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export {
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stdin_default as default,
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indexAnchorProps
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};
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