k94314517
2025-07-04 50fb58286ed3b718c39a97e0987ee7561a295651
wx/unpackage/dist/dev/mp-weixin/node-modules/uview-ui/components/u-sticky/u-sticky.js
@@ -1,376 +1,10 @@
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/**
 * sticky 吸顶
 * @description 该组件与CSS中position: sticky属性实现的效果一致,当组件达到预设的到顶部距离时, 就会固定在指定位置,组件位置大于预设的顶部距离时,会重新按照正常的布局排列。
 * @tutorial https://www.uviewui.com/components/sticky.html
 * @property {String | Number}   offsetTop      吸顶时与顶部的距离,单位px(默认 0 )
 * @property {String | Number}   customNavHeight   自定义导航栏的高度 (h5 默认44  其他默认 0 )
 * @property {Boolean}         disabled      是否开启吸顶功能 (默认 false )
 * @property {String}         bgColor         组件背景颜色(默认 '#ffffff' )
 * @property {String | Number}   zIndex         吸顶时的z-index值
 * @property {String | Number}   index         自定义标识,用于区分是哪一个组件
 * @property {Object}         customStyle      组件的样式,对象形式
 * @event {Function} fixed      组件吸顶时触发
 * @event {Function} unfixed   组件取消吸顶时触发
 * @example <u-sticky offsetTop="200"><view>塞下秋来风景异,衡阳雁去无留意</view></u-sticky>
 */
var _default = {
  name: 'u-sticky',
  mixins: [uni.$u.mpMixin, uni.$u.mixin, _props.default],
  data: function data() {
    return {
      cssSticky: false,
      // 是否使用css的sticky实现
      stickyTop: 0,
      // 吸顶的top值,因为可能受自定义导航栏影响,最终的吸顶值非offsetTop值
      elId: uni.$u.guid(),
      left: 0,
      // js模式时,吸顶的内容因为处于postition: fixed模式,为了和原来保持一致的样式,需要记录并重新设置它的left,height,width属性
      width: 'auto',
      height: 'auto',
      fixed: false // js模式时,是否处于吸顶模式
    };
  },
  computed: {
    style: function style() {
      var style = {};
      if (!this.disabled) {
        if (this.cssSticky) {
          style.position = 'sticky';
          style.zIndex = this.uZindex;
          style.top = uni.$u.addUnit(this.stickyTop);
        } else {
          style.height = this.fixed ? this.height + 'px' : 'auto';
        }
      } else {
        // 无需吸顶时,设置会默认的relative(nvue)和非nvue的static静态模式即可
        style.position = 'static';
      }
      style.backgroundColor = this.bgColor;
      return uni.$u.deepMerge(uni.$u.addStyle(this.customStyle), style);
    },
    // 吸顶内容的样式
    stickyContent: function stickyContent() {
      var style = {};
      if (!this.cssSticky) {
        style.position = this.fixed ? 'fixed' : 'static';
        style.top = this.stickyTop + 'px';
        style.left = this.left + 'px';
        style.width = this.width == 'auto' ? 'auto' : this.width + 'px';
        style.zIndex = this.uZindex;
      }
      return style;
    },
    uZindex: function uZindex() {
      return this.zIndex ? this.zIndex : uni.$u.zIndex.sticky;
    }
  },
  mounted: function mounted() {
    this.init();
  },
  methods: {
    init: function init() {
      this.getStickyTop();
      // 判断使用的模式
      this.checkSupportCssSticky();
      // 如果不支持css sticky,则使用js方案,此方案性能比不上css方案
      if (!this.cssSticky) {
        !this.disabled && this.initObserveContent();
      }
    },
    initObserveContent: function initObserveContent() {
      var _this = this;
      // 获取吸顶内容的高度,用于在js吸顶模式时,给父元素一个填充高度,防止"塌陷"
      this.$uGetRect('#' + this.elId).then(function (res) {
        _this.height = res.height;
        _this.left = res.left;
        _this.width = res.width;
        _this.$nextTick(function () {
          _this.observeContent();
        });
      });
    },
    observeContent: function observeContent() {
      var _this2 = this;
      // 先断掉之前的观察
      this.disconnectObserver('contentObserver');
      var contentObserver = uni.createIntersectionObserver({
        // 检测的区间范围
        thresholds: [0.95, 0.98, 1]
      });
      // 到屏幕顶部的高度时触发
      contentObserver.relativeToViewport({
        top: -this.stickyTop
      });
      // 绑定观察的元素
      contentObserver.observe("#".concat(this.elId), function (res) {
        _this2.setFixed(res.boundingClientRect.top);
      });
      this.contentObserver = contentObserver;
    },
    setFixed: function setFixed(top) {
      // 判断是否出于吸顶条件范围
      var fixed = top <= this.stickyTop;
      this.fixed = fixed;
    },
    disconnectObserver: function disconnectObserver(observerName) {
      // 断掉观察,释放资源
      var observer = this[observerName];
      observer && observer.disconnect();
    },
    getStickyTop: function getStickyTop() {
      this.stickyTop = uni.$u.getPx(this.offsetTop) + uni.$u.getPx(this.customNavHeight);
    },
    checkSupportCssSticky: function checkSupportCssSticky() {
      var _this3 = this;
      return (0, _asyncToGenerator2.default)( /*#__PURE__*/_regenerator.default.mark(function _callee() {
        return _regenerator.default.wrap(function _callee$(_context) {
          while (1) {
            switch (_context.prev = _context.next) {
              case 0:
                // 如果安卓版本高于8.0,依然认为是支持css sticky的(因为安卓7在某些机型,可能不支持sticky)
                if (uni.$u.os() === 'android' && Number(uni.$u.sys().system) > 8) {
                  _this3.cssSticky = true;
                }
                // APP-Vue和微信平台,通过computedStyle判断是否支持css sticky
                _context.next = 3;
                return _this3.checkComputedStyle();
              case 3:
                _this3.cssSticky = _context.sent;
                // ios上,从ios6开始,都是支持css sticky的
                if (uni.$u.os() === 'ios') {
                  _this3.cssSticky = true;
                }
                // nvue,是支持css sticky的
              case 5:
              case "end":
                return _context.stop();
            }
          }
        }, _callee);
      }))();
    },
    // 在APP和微信小程序上,通过uni.createSelectorQuery可以判断是否支持css sticky
    checkComputedStyle: function checkComputedStyle() {
      var _this4 = this;
      // 方法内进行判断,避免在其他平台生成无用代码
      return new Promise(function (resolve) {
        uni.createSelectorQuery().in(_this4).select('.u-sticky').fields({
          computedStyle: ["position"]
        }).exec(function (e) {
          resolve('sticky' === e[0].position);
        });
      });
    },
    // H5通过创建元素的形式嗅探是否支持css sticky
    // 判断浏览器是否支持sticky属性
    checkCssStickyForH5: function checkCssStickyForH5() {
      // 方法内进行判断,避免在其他平台生成无用代码
    }
  },
  beforeDestroy: function beforeDestroy() {
    this.disconnectObserver('contentObserver');
  }
};
exports.default = _default;
/* WEBPACK VAR INJECTION */}.call(this, __webpack_require__(/*! ./node_modules/@dcloudio/uni-mp-weixin/dist/index.js */ 2)["default"]))
/***/ }),
/***/ 506:
/*!*********************************************************************************************************************************************************!*\
  !*** D:/code/idea2023/git/yunyibao/wx/node_modules/uview-ui/components/u-sticky/u-sticky.vue?vue&type=style&index=0&id=c187ecf2&lang=scss&scoped=true& ***!
  \*********************************************************************************************************************************************************/
/*! no static exports found */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
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/* harmony import */ var _soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_mini_css_extract_plugin_dist_loader_js_ref_8_oneOf_1_0_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_css_loader_dist_cjs_js_ref_8_oneOf_1_1_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_vue_loader_lib_loaders_stylePostLoader_js_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_webpack_preprocess_loader_index_js_ref_8_oneOf_1_2_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_postcss_loader_src_index_js_ref_8_oneOf_1_3_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_sass_loader_dist_cjs_js_ref_8_oneOf_1_4_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_webpack_preprocess_loader_index_js_ref_8_oneOf_1_5_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_vue_loader_lib_index_js_vue_loader_options_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_webpack_uni_mp_loader_lib_style_js_u_sticky_vue_vue_type_style_index_0_id_c187ecf2_lang_scss_scoped_true___WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_mini_css_extract_plugin_dist_loader_js_ref_8_oneOf_1_0_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_css_loader_dist_cjs_js_ref_8_oneOf_1_1_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_vue_loader_lib_loaders_stylePostLoader_js_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_webpack_preprocess_loader_index_js_ref_8_oneOf_1_2_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_postcss_loader_src_index_js_ref_8_oneOf_1_3_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_sass_loader_dist_cjs_js_ref_8_oneOf_1_4_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_webpack_preprocess_loader_index_js_ref_8_oneOf_1_5_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_vue_loader_lib_index_js_vue_loader_options_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_webpack_uni_mp_loader_lib_style_js_u_sticky_vue_vue_type_style_index_0_id_c187ecf2_lang_scss_scoped_true___WEBPACK_IMPORTED_MODULE_0__);
/* harmony reexport (unknown) */ for(var __WEBPACK_IMPORT_KEY__ in _soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_mini_css_extract_plugin_dist_loader_js_ref_8_oneOf_1_0_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_css_loader_dist_cjs_js_ref_8_oneOf_1_1_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_vue_loader_lib_loaders_stylePostLoader_js_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_webpack_preprocess_loader_index_js_ref_8_oneOf_1_2_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_postcss_loader_src_index_js_ref_8_oneOf_1_3_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_sass_loader_dist_cjs_js_ref_8_oneOf_1_4_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_webpack_preprocess_loader_index_js_ref_8_oneOf_1_5_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_vue_loader_lib_index_js_vue_loader_options_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_webpack_uni_mp_loader_lib_style_js_u_sticky_vue_vue_type_style_index_0_id_c187ecf2_lang_scss_scoped_true___WEBPACK_IMPORTED_MODULE_0__) if(["default"].indexOf(__WEBPACK_IMPORT_KEY__) < 0) (function(key) { __webpack_require__.d(__webpack_exports__, key, function() { return _soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_mini_css_extract_plugin_dist_loader_js_ref_8_oneOf_1_0_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_css_loader_dist_cjs_js_ref_8_oneOf_1_1_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_vue_loader_lib_loaders_stylePostLoader_js_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_webpack_preprocess_loader_index_js_ref_8_oneOf_1_2_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_postcss_loader_src_index_js_ref_8_oneOf_1_3_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_sass_loader_dist_cjs_js_ref_8_oneOf_1_4_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_webpack_preprocess_loader_index_js_ref_8_oneOf_1_5_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_vue_cli_plugin_uni_packages_vue_loader_lib_index_js_vue_loader_options_soft_HBuilderX_4_08_2024040127_HBuilderX_plugins_uniapp_cli_node_modules_dcloudio_webpack_uni_mp_loader_lib_style_js_u_sticky_vue_vue_type_style_index_0_id_c187ecf2_lang_scss_scoped_true___WEBPACK_IMPORTED_MODULE_0__[key]; }) }(__WEBPACK_IMPORT_KEY__));
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/***/ }),
/***/ 507:
/*!*************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************!*\
  !*** ./node_modules/mini-css-extract-plugin/dist/loader.js??ref--8-oneOf-1-0!./node_modules/css-loader/dist/cjs.js??ref--8-oneOf-1-1!./node_modules/@dcloudio/vue-cli-plugin-uni/packages/vue-loader/lib/loaders/stylePostLoader.js!./node_modules/@dcloudio/vue-cli-plugin-uni/packages/webpack-preprocess-loader??ref--8-oneOf-1-2!./node_modules/postcss-loader/src??ref--8-oneOf-1-3!./node_modules/@dcloudio/vue-cli-plugin-uni/packages/sass-loader/dist/cjs.js??ref--8-oneOf-1-4!./node_modules/@dcloudio/vue-cli-plugin-uni/packages/webpack-preprocess-loader??ref--8-oneOf-1-5!./node_modules/@dcloudio/vue-cli-plugin-uni/packages/vue-loader/lib??vue-loader-options!./node_modules/@dcloudio/webpack-uni-mp-loader/lib/style.js!D:/code/idea2023/git/yunyibao/wx/node_modules/uview-ui/components/u-sticky/u-sticky.vue?vue&type=style&index=0&id=c187ecf2&lang=scss&scoped=true& ***!
  \*************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************/
/*! no static exports found */
/***/ (function(module, exports, __webpack_require__) {
// extracted by mini-css-extract-plugin
    if(false) { var cssReload; }
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