98 lines
3.5 KiB
JavaScript
98 lines
3.5 KiB
JavaScript
import { useForwardExpose } from "../shared/useForwardExpose.js";
|
|
import { Primitive } from "../Primitive/Primitive.js";
|
|
import { injectScrollAreaRootContext } from "./ScrollAreaRoot.js";
|
|
import { addUnlinkedScrollListener } from "./utils.js";
|
|
import { injectScrollAreaScrollbarVisibleContext } from "./ScrollAreaScrollbarVisible.js";
|
|
import { computed, createBlock, defineComponent, onUnmounted, openBlock, ref, renderSlot, unref, withCtx } from "vue";
|
|
import { watchOnce } from "@vueuse/core";
|
|
|
|
//#region src/ScrollArea/ScrollAreaThumb.vue?vue&type=script&setup=true&lang.ts
|
|
var ScrollAreaThumb_vue_vue_type_script_setup_true_lang_default = /* @__PURE__ */ defineComponent({
|
|
__name: "ScrollAreaThumb",
|
|
props: {
|
|
asChild: {
|
|
type: Boolean,
|
|
required: false
|
|
},
|
|
as: {
|
|
type: null,
|
|
required: false
|
|
}
|
|
},
|
|
setup(__props) {
|
|
const props = __props;
|
|
const rootContext = injectScrollAreaRootContext();
|
|
const scrollbarContextVisible = injectScrollAreaScrollbarVisibleContext();
|
|
function handlePointerDown(event) {
|
|
const thumb = event.target;
|
|
const thumbRect = thumb.getBoundingClientRect();
|
|
const x = event.clientX - thumbRect.left;
|
|
const y = event.clientY - thumbRect.top;
|
|
scrollbarContextVisible.handleThumbDown(event, {
|
|
x,
|
|
y
|
|
});
|
|
}
|
|
function handlePointerUp(event) {
|
|
scrollbarContextVisible.handleThumbUp(event);
|
|
}
|
|
const { forwardRef, currentElement: thumbElement } = useForwardExpose();
|
|
const removeUnlinkedScrollListenerRef = ref();
|
|
const viewport = computed(() => rootContext.viewport.value);
|
|
function handleScroll() {
|
|
if (!removeUnlinkedScrollListenerRef.value) {
|
|
const listener = addUnlinkedScrollListener(viewport.value, scrollbarContextVisible.onThumbPositionChange);
|
|
removeUnlinkedScrollListenerRef.value = listener;
|
|
scrollbarContextVisible.onThumbPositionChange();
|
|
}
|
|
}
|
|
const sizes = computed(() => scrollbarContextVisible.sizes.value);
|
|
watchOnce(sizes, () => {
|
|
scrollbarContextVisible.onThumbChange(thumbElement.value);
|
|
if (viewport.value) {
|
|
/**
|
|
* We only bind to native scroll event so we know when scroll starts and ends.
|
|
* When scroll starts we start a requestAnimationFrame loop that checks for
|
|
* changes to scroll position. That rAF loop triggers our thumb position change
|
|
* when relevant to avoid scroll-linked effects. We cancel the loop when scroll ends.
|
|
* https://developer.mozilla.org/en-US/docs/Mozilla/Performance/Scroll-linked_effects
|
|
*/
|
|
scrollbarContextVisible.onThumbPositionChange();
|
|
viewport.value.addEventListener("scroll", handleScroll);
|
|
}
|
|
});
|
|
onUnmounted(() => {
|
|
viewport.value.removeEventListener("scroll", handleScroll);
|
|
rootContext.viewport.value?.removeEventListener("scroll", handleScroll);
|
|
});
|
|
return (_ctx, _cache) => {
|
|
return openBlock(), createBlock(unref(Primitive), {
|
|
ref: unref(forwardRef),
|
|
"data-state": unref(scrollbarContextVisible).hasThumb ? "visible" : "hidden",
|
|
style: {
|
|
width: "var(--reka-scroll-area-thumb-width)",
|
|
height: "var(--reka-scroll-area-thumb-height)"
|
|
},
|
|
"as-child": props.asChild,
|
|
as: _ctx.as,
|
|
onPointerdown: handlePointerDown,
|
|
onPointerup: handlePointerUp
|
|
}, {
|
|
default: withCtx(() => [renderSlot(_ctx.$slots, "default")]),
|
|
_: 3
|
|
}, 8, [
|
|
"data-state",
|
|
"as-child",
|
|
"as"
|
|
]);
|
|
};
|
|
}
|
|
});
|
|
|
|
//#endregion
|
|
//#region src/ScrollArea/ScrollAreaThumb.vue
|
|
var ScrollAreaThumb_default = ScrollAreaThumb_vue_vue_type_script_setup_true_lang_default;
|
|
|
|
//#endregion
|
|
export { ScrollAreaThumb_default };
|
|
//# sourceMappingURL=ScrollAreaThumb.js.map
|