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admin/node_modules/element-plus/es/components/scrollbar/src/thumb2.mjs

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+import { defineComponent, inject, ref, computed, onBeforeUnmount, toRef, openBlock, createBlock, Transition, unref, withCtx, withDirectives, createElementVNode, normalizeClass, withModifiers, normalizeStyle, vShow } from 'vue';
+import { useEventListener, isClient } from '@vueuse/core';
+import { scrollbarContextKey } from './constants.mjs';
+import { BAR_MAP, renderThumbStyle } from './util.mjs';
+import { thumbProps } from './thumb.mjs';
+import _export_sfc from '../../../_virtual/plugin-vue_export-helper.mjs';
+import { useNamespace } from '../../../hooks/use-namespace/index.mjs';
+import { throwError } from '../../../utils/error.mjs';
+
+const COMPONENT_NAME = "Thumb";
+const _sfc_main = /* @__PURE__ */ defineComponent({
+  __name: "thumb",
+  props: thumbProps,
+  setup(__props) {
+    const props = __props;
+    const scrollbar = inject(scrollbarContextKey);
+    const ns = useNamespace("scrollbar");
+    if (!scrollbar)
+      throwError(COMPONENT_NAME, "can not inject scrollbar context");
+    const instance = ref();
+    const thumb = ref();
+    const thumbState = ref({});
+    const visible = ref(false);
+    let cursorDown = false;
+    let cursorLeave = false;
+    let baseScrollHeight = 0;
+    let baseScrollWidth = 0;
+    let originalOnSelectStart = isClient ? document.onselectstart : null;
+    const bar = computed(() => BAR_MAP[props.vertical ? "vertical" : "horizontal"]);
+    const thumbStyle = computed(() => renderThumbStyle({
+      size: props.size,
+      move: props.move,
+      bar: bar.value
+    }));
+    const offsetRatio = computed(() => instance.value[bar.value.offset] ** 2 / scrollbar.wrapElement[bar.value.scrollSize] / props.ratio / thumb.value[bar.value.offset]);
+    const clickThumbHandler = (e) => {
+      var _a;
+      e.stopPropagation();
+      if (e.ctrlKey || [1, 2].includes(e.button))
+        return;
+      (_a = window.getSelection()) == null ? void 0 : _a.removeAllRanges();
+      startDrag(e);
+      const el = e.currentTarget;
+      if (!el)
+        return;
+      thumbState.value[bar.value.axis] = el[bar.value.offset] - (e[bar.value.client] - el.getBoundingClientRect()[bar.value.direction]);
+    };
+    const clickTrackHandler = (e) => {
+      if (!thumb.value || !instance.value || !scrollbar.wrapElement)
+        return;
+      const offset = Math.abs(e.target.getBoundingClientRect()[bar.value.direction] - e[bar.value.client]);
+      const thumbHalf = thumb.value[bar.value.offset] / 2;
+      const thumbPositionPercentage = (offset - thumbHalf) * 100 * offsetRatio.value / instance.value[bar.value.offset];
+      scrollbar.wrapElement[bar.value.scroll] = thumbPositionPercentage * scrollbar.wrapElement[bar.value.scrollSize] / 100;
+    };
+    const startDrag = (e) => {
+      e.stopImmediatePropagation();
+      cursorDown = true;
+      baseScrollHeight = scrollbar.wrapElement.scrollHeight;
+      baseScrollWidth = scrollbar.wrapElement.scrollWidth;
+      document.addEventListener("mousemove", mouseMoveDocumentHandler);
+      document.addEventListener("mouseup", mouseUpDocumentHandler);
+      originalOnSelectStart = document.onselectstart;
+      document.onselectstart = () => false;
+    };
+    const mouseMoveDocumentHandler = (e) => {
+      if (!instance.value || !thumb.value)
+        return;
+      if (cursorDown === false)
+        return;
+      const prevPage = thumbState.value[bar.value.axis];
+      if (!prevPage)
+        return;
+      const offset = (instance.value.getBoundingClientRect()[bar.value.direction] - e[bar.value.client]) * -1;
+      const thumbClickPosition = thumb.value[bar.value.offset] - prevPage;
+      const thumbPositionPercentage = (offset - thumbClickPosition) * 100 * offsetRatio.value / instance.value[bar.value.offset];
+      if (bar.value.scroll === "scrollLeft") {
+        scrollbar.wrapElement[bar.value.scroll] = thumbPositionPercentage * baseScrollWidth / 100;
+      } else {
+        scrollbar.wrapElement[bar.value.scroll] = thumbPositionPercentage * baseScrollHeight / 100;
+      }
+    };
+    const mouseUpDocumentHandler = () => {
+      cursorDown = false;
+      thumbState.value[bar.value.axis] = 0;
+      document.removeEventListener("mousemove", mouseMoveDocumentHandler);
+      document.removeEventListener("mouseup", mouseUpDocumentHandler);
+      restoreOnselectstart();
+      if (cursorLeave)
+        visible.value = false;
+    };
+    const mouseMoveScrollbarHandler = () => {
+      cursorLeave = false;
+      visible.value = !!props.size;
+    };
+    const mouseLeaveScrollbarHandler = () => {
+      cursorLeave = true;
+      visible.value = cursorDown;
+    };
+    onBeforeUnmount(() => {
+      restoreOnselectstart();
+      document.removeEventListener("mouseup", mouseUpDocumentHandler);
+    });
+    const restoreOnselectstart = () => {
+      if (document.onselectstart !== originalOnSelectStart)
+        document.onselectstart = originalOnSelectStart;
+    };
+    useEventListener(toRef(scrollbar, "scrollbarElement"), "mousemove", mouseMoveScrollbarHandler);
+    useEventListener(toRef(scrollbar, "scrollbarElement"), "mouseleave", mouseLeaveScrollbarHandler);
+    return (_ctx, _cache) => {
+      return openBlock(), createBlock(Transition, {
+        name: unref(ns).b("fade"),
+        persisted: ""
+      }, {
+        default: withCtx(() => [
+          withDirectives(createElementVNode("div", {
+            ref_key: "instance",
+            ref: instance,
+            class: normalizeClass([unref(ns).e("bar"), unref(ns).is(unref(bar).key)]),
+            onMousedown: clickTrackHandler,
+            onClick: withModifiers(() => {
+            }, ["stop"])
+          }, [
+            createElementVNode("div", {
+              ref_key: "thumb",
+              ref: thumb,
+              class: normalizeClass(unref(ns).e("thumb")),
+              style: normalizeStyle(unref(thumbStyle)),
+              onMousedown: clickThumbHandler
+            }, null, 38)
+          ], 42, ["onClick"]), [
+            [vShow, _ctx.always || visible.value]
+          ])
+        ]),
+        _: 1
+      }, 8, ["name"]);
+    };
+  }
+});
+var Thumb = /* @__PURE__ */ _export_sfc(_sfc_main, [["__file", "thumb.vue"]]);
+
+export { Thumb as default };
+//# sourceMappingURL=thumb2.mjs.map