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zhishifufei_php/public/pc/element-ui/lib/infinite-scroll.js

300 lines
9.0 KiB

module.exports =
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/************************************************************************/
/******/ ({
/***/ 139:
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
// EXTERNAL MODULE: external "throttle-debounce/debounce"
var debounce_ = __webpack_require__(18);
var debounce_default = /*#__PURE__*/__webpack_require__.n(debounce_);
// EXTERNAL MODULE: external "element-ui/lib/utils/types"
var types_ = __webpack_require__(17);
// EXTERNAL MODULE: external "element-ui/lib/utils/dom"
var dom_ = __webpack_require__(2);
// CONCATENATED MODULE: ./packages/infinite-scroll/src/main.js
var getStyleComputedProperty = function getStyleComputedProperty(element, property) {
if (element === window) {
element = document.documentElement;
}
if (element.nodeType !== 1) {
return [];
}
// NOTE: 1 DOM access here
var css = window.getComputedStyle(element, null);
return property ? css[property] : css;
};
var entries = function entries(obj) {
return Object.keys(obj || {}).map(function (key) {
return [key, obj[key]];
});
};
var getPositionSize = function getPositionSize(el, prop) {
return el === window || el === document ? document.documentElement[prop] : el[prop];
};
var getOffsetHeight = function getOffsetHeight(el) {
return getPositionSize(el, 'offsetHeight');
};
var getClientHeight = function getClientHeight(el) {
return getPositionSize(el, 'clientHeight');
};
var scope = 'ElInfiniteScroll';
var attributes = {
delay: {
type: Number,
default: 200
},
distance: {
type: Number,
default: 0
},
disabled: {
type: Boolean,
default: false
},
immediate: {
type: Boolean,
default: true
}
};
var main_getScrollOptions = function getScrollOptions(el, vm) {
if (!Object(types_["isHtmlElement"])(el)) return {};
return entries(attributes).reduce(function (map, _ref) {
var key = _ref[0],
option = _ref[1];
var type = option.type,
defaultValue = option.default;
var value = el.getAttribute('infinite-scroll-' + key);
value = Object(types_["isUndefined"])(vm[value]) ? value : vm[value];
switch (type) {
case Number:
value = Number(value);
value = Number.isNaN(value) ? defaultValue : value;
break;
case Boolean:
value = Object(types_["isDefined"])(value) ? value === 'false' ? false : Boolean(value) : defaultValue;
break;
default:
value = type(value);
}
map[key] = value;
return map;
}, {});
};
var getElementTop = function getElementTop(el) {
return el.getBoundingClientRect().top;
};
var main_handleScroll = function handleScroll(cb) {
var _scope = this[scope],
el = _scope.el,
vm = _scope.vm,
container = _scope.container,
observer = _scope.observer;
var _getScrollOptions = main_getScrollOptions(el, vm),
distance = _getScrollOptions.distance,
disabled = _getScrollOptions.disabled;
if (disabled) return;
var containerInfo = container.getBoundingClientRect();
if (!containerInfo.width && !containerInfo.height) return;
var shouldTrigger = false;
if (container === el) {
// be aware of difference between clientHeight & offsetHeight & window.getComputedStyle().height
var scrollBottom = container.scrollTop + getClientHeight(container);
shouldTrigger = container.scrollHeight - scrollBottom <= distance;
} else {
var heightBelowTop = getOffsetHeight(el) + getElementTop(el) - getElementTop(container);
var offsetHeight = getOffsetHeight(container);
var borderBottom = Number.parseFloat(getStyleComputedProperty(container, 'borderBottomWidth'));
shouldTrigger = heightBelowTop - offsetHeight + borderBottom <= distance;
}
if (shouldTrigger && Object(types_["isFunction"])(cb)) {
cb.call(vm);
} else if (observer) {
observer.disconnect();
this[scope].observer = null;
}
};
/* harmony default export */ var main = ({
name: 'InfiniteScroll',
inserted: function inserted(el, binding, vnode) {
var cb = binding.value;
var vm = vnode.context;
// only include vertical scroll
var container = Object(dom_["getScrollContainer"])(el, true);
var _getScrollOptions2 = main_getScrollOptions(el, vm),
delay = _getScrollOptions2.delay,
immediate = _getScrollOptions2.immediate;
var onScroll = debounce_default()(delay, main_handleScroll.bind(el, cb));
el[scope] = { el: el, vm: vm, container: container, onScroll: onScroll };
if (container) {
container.addEventListener('scroll', onScroll);
if (immediate) {
var observer = el[scope].observer = new MutationObserver(onScroll);
observer.observe(container, { childList: true, subtree: true });
onScroll();
}
}
},
unbind: function unbind(el) {
var _el$scope = el[scope],
container = _el$scope.container,
onScroll = _el$scope.onScroll;
if (container) {
container.removeEventListener('scroll', onScroll);
}
}
});
// CONCATENATED MODULE: ./packages/infinite-scroll/index.js
/* istanbul ignore next */
main.install = function (Vue) {
Vue.directive(main.name, main);
};
/* harmony default export */ var infinite_scroll = __webpack_exports__["default"] = (main);
/***/ }),
/***/ 17:
/***/ (function(module, exports) {
module.exports = require("element-ui/lib/utils/types");
/***/ }),
/***/ 18:
/***/ (function(module, exports) {
module.exports = require("throttle-debounce/debounce");
/***/ }),
/***/ 2:
/***/ (function(module, exports) {
module.exports = require("element-ui/lib/utils/dom");
/***/ })
/******/ });