tdesign-vue/lib/back-top/back-top.js

tdesign-vue

/**
 * tdesign v1.14.1
 * (c) 2025 tdesign
 * @license MIT
 */

import _typeof from '@babel/runtime/helpers/typeof';
import _defineProperty from '@babel/runtime/helpers/defineProperty';
import { defineComponent, ref, computed, onMounted, onBeforeUnmount } from '@vue/composition-api';
import { BacktopIcon } from 'tdesign-icons-vue';
import { scrollTo } from '../utils/dom.js';
import { renderContent } from '../utils/render-tnode.js';
import { usePrefixClass } from '../hooks/useConfig.js';
import { useGlobalIcon } from '../hooks/useGlobalIcon.js';
import props from './props.js';
import 'vue';
import 'raf';
import 'lodash-es';
import '../utils/easing.js';
import '@babel/runtime/helpers/readOnlyError';
import '../config-provider/useConfig.js';
import '../config-provider/context.js';
import '../_common/js/global-config/default-config.js';
import '../_common/js/global-config/locale/zh_CN.js';
import '../_chunks/dep-ba613a02.js';
import '../_chunks/dep-fdb1b253.js';
import 'dayjs';
import '../_common/js/global-config/t.js';
import '@babel/runtime/helpers/slicedToArray';

function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
var _BackTop = defineComponent({
  name: "TBackTop",
  props: _objectSpread({}, props),
  setup: function setup(props2) {
    var visible = ref(false);
    var containerRef = ref(null);
    var componentName = usePrefixClass("back-top");
    var classPrefix = usePrefixClass();
    var theme = props2.theme,
      shape = props2.shape,
      size = props2.size,
      target = props2.target,
      duration = props2.duration,
      offset = props2.offset,
      container = props2.container;
    var _useGlobalIcon = useGlobalIcon({
        BacktopIcon: BacktopIcon
      }),
      BacktopIcon$1 = _useGlobalIcon.BacktopIcon;
    var getContainer = function getContainer(container2) {
      if (typeof container2 === "string" && (typeof document === "undefined" ? "undefined" : _typeof(document)) !== void 0) {
        if (container2 === "body") {
          return document;
        }
        return document.querySelector(container2);
      }
      if (typeof container2 === "function") {
        return container2();
      }
      return null;
    };
    var getBackTo = function getBackTo() {
      if (target === container) return 0;
      if (target === "body") return 0;
      if (!target) return 0;
      var targetNode = getContainer(target);
      if (!targetNode) return 0;
      var _targetNode$getBoundi = targetNode.getBoundingClientRect(),
        y = _targetNode$getBoundi.y;
      return y;
    };
    var handleClick = function handleClick(e) {
      var _props2$onClick;
      var y = getBackTo();
      scrollTo(y, {
        container: containerRef.value,
        duration: duration
      });
      (_props2$onClick = props2.onClick) === null || _props2$onClick === void 0 || _props2$onClick.call(props2, {
        e: e
      });
    };
    var cls = computed(function () {
      return _defineProperty(_defineProperty(_defineProperty(_defineProperty(_defineProperty(_defineProperty({}, componentName.value, true), "".concat(componentName.value, "--theme-").concat(theme), true), "".concat(componentName.value, "--").concat(shape), true), "".concat(componentName.value, "--show"), visible.value), "".concat(classPrefix.value, "-size-s"), size === "small"), "".concat(classPrefix.value, "-size-m"), size === "medium");
    });
    var positionStyle = computed(function () {
      return {
        insetInlineEnd: offset[0],
        insetBlockEnd: offset[1]
      };
    });
    onMounted(function () {
      containerRef.value = getContainer(props2.container);
      var visibleHeight;
      if (typeof props2.visibleHeight === "string") {
        visibleHeight = Number(props2.visibleHeight.replace("px", ""));
      } else {
        visibleHeight = props2.visibleHeight;
      }
      if (visibleHeight === 0) {
        visible.value = true;
        return;
      }
      var scrollDOM;
      if (containerRef.value) {
        if (containerRef.value.scrollTop === void 0) {
          scrollDOM = document.documentElement;
        } else {
          scrollDOM = containerRef.value;
        }
        containerRef.value.onscroll = function () {
          var _scrollDOM = scrollDOM,
            scrollTop = _scrollDOM.scrollTop;
          if (scrollTop >= visibleHeight) {
            visible.value = true;
          }
          if (scrollTop < visibleHeight && visible.value) {
            visible.value = false;
          }
        };
      }
    });
    onBeforeUnmount(function () {
      containerRef.value.onscroll = null;
    });
    return {
      BacktopIcon: BacktopIcon$1,
      cls: cls,
      handleClick: handleClick,
      positionStyle: positionStyle,
      componentName: componentName
    };
  },
  render: function render() {
    var h = arguments[0];
    var BacktopIcon = this.BacktopIcon;
    var defaultContent = h("div", [h(BacktopIcon, {
      "class": "".concat(this.componentName, "__icon"),
      "attrs": {
        "size": "24"
      }
    }), h("span", {
      "class": "".concat(this.componentName, "__text")
    }, ["TOP"])]);
    return h("button", {
      "attrs": {
        "type": "button"
      },
      "class": this.cls,
      "style": this.positionStyle,
      "on": {
        "click": this.handleClick
      }
    }, [renderContent(this, "content", "default", defaultContent)]);
  }
});

export { _BackTop as default };
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