element-ui-for-gov/lib/infinite-scroll.js

element-ui for gov

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/***/ 101:
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/***/ 133:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);

// EXTERNAL MODULE: external "throttle-debounce/debounce"
var debounce_ = __webpack_require__(17);
var debounce_default = /*#__PURE__*/__webpack_require__.n(debounce_);

// EXTERNAL MODULE: external "element-ui/lib/utils/types"
var types_ = __webpack_require__(19);

// 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 = __webpack_require__(15);

/***/ }),

/***/ 19:
/***/ (function(module, exports) {

module.exports = __webpack_require__(20);

/***/ }),

/***/ 2:
/***/ (function(module, exports) {

module.exports = __webpack_require__(29);

/***/ })

/******/ });

/***/ }),

/***/ 15:
/***/ (function(module, exports, __webpack_require__) {

/* eslint-disable no-undefined */

var throttle = __webpack_require__(18);

/**
 * Debounce execution of a function. Debouncing, unlike throttling,
 * guarantees that a function is only executed a single time, either at the
 * very beginning of a series of calls, or at the very end.
 *
 * @param  {Number}   delay         A zero-or-greater delay in milliseconds. For event callbacks, values around 100 or 250 (or even higher) are most useful.
 * @param  {Boolean}  [atBegin]     Optional, defaults to false. If atBegin is false or unspecified, callback will only be executed `delay` milliseconds
 *                                  after the last debounced-function call. If atBegin is true, callback will be executed only at the first debounced-function call.
 *                                  (After the throttled-function has not been called for `delay` milliseconds, the internal counter is reset).
 * @param  {Function} callback      A function to be executed after delay milliseconds. The `this` context and all arguments are passed through, as-is,
 *                                  to `callback` when the debounced-function is executed.
 *
 * @return {Function} A new, debounced function.
 */
module.exports = function ( delay, atBegin, callback ) {
	return callback === undefined ? throttle(delay, atBegin, false) : throttle(delay, callback, atBegin !== false);
};


/***/ }),

/***/ 18:
/***/ (function(module, exports) {

/* eslint-disable no-undefined,no-param-reassign,no-shadow */

/**
 * Throttle execution of a function. Especially useful for rate limiting
 * execution of handlers on events like resize and scroll.
 *
 * @param  {Number}    delay          A zero-or-greater delay in milliseconds. For event callbacks, values around 100 or 250 (or even higher) are most useful.
 * @param  {Boolean}   [noTrailing]   Optional, defaults to false. If noTrailing is true, callback will only execute every `delay` milliseconds while the
 *                                    throttled-function is being called. If noTrailing is false or unspecified, callback will be executed one final time
 *                                    after the last throttled-function call. (After the throttled-function has not been called for `delay` milliseconds,
 *                                    the internal counter is reset)
 * @param  {Function}  callback       A function to be executed after delay milliseconds. The `this` context and all arguments are passed through, as-is,
 *                                    to `callback` when the throttled-function is executed.
 * @param  {Boolean}   [debounceMode] If `debounceMode` is true (at begin), schedule `clear` to execute after `delay` ms. If `debounceMode` is false (at end),
 *                                    schedule `callback` to execute after `delay` ms.
 *
 * @return {Function}  A new, throttled, function.
 */
module.exports = function ( delay, noTrailing, callback, debounceMode ) {

	// After wrapper has stopped being called, this timeout ensures that
	// `callback` is executed at the proper times in `throttle` and `end`
	// debounce modes.
	var timeoutID;

	// Keep track of the last time `callback` was executed.
	var lastExec = 0;

	// `noTrailing` defaults to falsy.
	if ( typeof noTrailing !== 'boolean' ) {
		debounceMode = callback;
		callback = noTrailing;
		noTrailing = undefined;
	}

	// The `wrapper` function encapsulates all of the throttling / debouncing
	// functionality and when executed will limit the rate at which `callback`
	// is executed.
	function wrapper () {

		var self = this;
		var elapsed = Number(new Date()) - lastExec;
		var args = arguments;

		// Execute `callback` and update the `lastExec` timestamp.
		function exec () {
			lastExec = Number(new Date());
			callback.apply(self, args);
		}

		// If `debounceMode` is true (at begin) this is used to clear the flag
		// to allow future `callback` executions.
		function clear () {
			timeoutID = undefined;
		}

		if ( debounceMode && !timeoutID ) {
			// Since `wrapper` is being called for the first time and
			// `debounceMode` is true (at begin), execute `callback`.
			exec();
		}

		// Clear any existing timeout.
		if ( timeoutID ) {
			clearTimeout(timeoutID);
		}

		if ( debounceMode === undefined && elapsed > delay ) {
			// In throttle mode, if `delay` time has been exceeded, execute
			// `callback`.
			exec();

		} else if ( noTrailing !== true ) {
			// In trailing throttle mode, since `delay` time has not been
			// exceeded, schedule `callback` to execute `delay` ms after most
			// recent execution.
			//
			// If `debounceMode` is true (at begin), schedule `clear` to execute
			// after `delay` ms.
			//
			// If `debounceMode` is false (at end), schedule `callback` to
			// execute after `delay` ms.
			timeoutID = setTimeout(debounceMode ? clear : exec, debounceMode === undefined ? delay - elapsed : delay);
		}

	}

	// Return the wrapper function.
	return wrapper;

};


/***/ }),

/***/ 20:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


exports.__esModule = true;
exports.isString = isString;
exports.isObject = isObject;
exports.isHtmlElement = isHtmlElement;
function isString(obj) {
  return Object.prototype.toString.call(obj) === '[object String]';
}

function isObject(obj) {
  return Object.prototype.toString.call(obj) === '[object Object]';
}

function isHtmlElement(node) {
  return node && node.nodeType === Node.ELEMENT_NODE;
}

var isFunction = exports.isFunction = function isFunction(functionToCheck) {
  var getType = {};
  return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
};

var isUndefined = exports.isUndefined = function isUndefined(val) {
  return val === void 0;
};

var isDefined = exports.isDefined = function isDefined(val) {
  return val !== undefined && val !== null;
};

/***/ }),

/***/ 243:
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var element_ui_lib_infinite_scroll__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(101);
/* harmony import */ var element_ui_lib_infinite_scroll__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(element_ui_lib_infinite_scroll__WEBPACK_IMPORTED_MODULE_0__);


/* istanbul ignore next */
element_ui_lib_infinite_scroll__WEBPACK_IMPORTED_MODULE_0___default.a.install = function (Vue) {
  Vue.directive(element_ui_lib_infinite_scroll__WEBPACK_IMPORTED_MODULE_0___default.a.name, element_ui_lib_infinite_scroll__WEBPACK_IMPORTED_MODULE_0___default.a);
};

/* harmony default export */ __webpack_exports__["default"] = (element_ui_lib_infinite_scroll__WEBPACK_IMPORTED_MODULE_0___default.a);

/***/ }),

/***/ 29:
/***/ (function(module, exports, __webpack_require__) {

"use strict";


exports.__esModule = true;
exports.isInContainer = exports.getScrollContainer = exports.isScroll = exports.getStyle = exports.once = exports.off = exports.on = undefined;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; /* istanbul ignore next */

exports.hasClass = hasClass;
exports.addClass = addClass;
exports.removeClass = removeClass;
exports.setStyle = setStyle;

var _vue = __webpack_require__(4);

var _vue2 = _interopRequireDefault(_vue);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var isServer = _vue2.default.prototype.$isServer;
var SPECIAL_CHARS_REGEXP = /([\:\-\_]+(.))/g;
var MOZ_HACK_REGEXP = /^moz([A-Z])/;
var ieVersion = isServer ? 0 : Number(document.documentMode);

/* istanbul ignore next */
var trim = function trim(string) {
  return (string || '').replace(/^[\s\uFEFF]+|[\s\uFEFF]+$/g, '');
};
/* istanbul ignore next */
var camelCase = function camelCase(name) {
  return name.replace(SPECIAL_CHARS_REGEXP, function (_, separator, letter, offset) {
    return offset ? letter.toUpperCase() : letter;
  }).replace(MOZ_HACK_REGEXP, 'Moz$1');
};

/* istanbul ignore next */
var on = exports.on = function () {
  if (!isServer && document.addEventListener) {
    return function (element, event, handler) {
      if (element && event && handler) {
        element.addEventListener(event, handler, false);
      }
    };
  } else {
    return function (element, event, handler) {
      if (element && event && handler) {
        element.attachEvent('on' + event, handler);
      }
    };
  }
}();

/* istanbul ignore next */
var off = exports.off = function () {
  if (!isServer && document.removeEventListener) {
    return function (element, event, handler) {
      if (element && event) {
        element.removeEventListener(event, handler, false);
      }
    };
  } else {
    return function (element, event, handler) {
      if (element && event) {
        element.detachEvent('on' + event, handler);
      }
    };
  }
}();

/* istanbul ignore next */
var once = exports.once = function once(el, event, fn) {
  var listener = function listener() {
    if (fn) {
      fn.apply(this, arguments);
    }
    off(el, event, listener);
  };
  on(el, event, listener);
};

/* istanbul ignore next */
function hasClass(el, cls) {
  if (!el || !cls) return false;
  if (cls.indexOf(' ') !== -1) throw new Error('className should not contain space.');
  if (el.classList) {
    return el.classList.contains(cls);
  } else {
    return (' ' + el.className + ' ').indexOf(' ' + cls + ' ') > -1;
  }
};

/* istanbul ignore next */
function addClass(el, cls) {
  if (!el) return;
  var curClass = el.className;
  var classes = (cls || '').split(' ');

  for (var i = 0, j = classes.length; i < j; i++) {
    var clsName = classes[i];
    if (!clsName) continue;

    if (el.classList) {
      el.classList.add(clsName);
    } else if (!hasClass(el, clsName)) {
      curClass += ' ' + clsName;
    }
  }
  if (!el.classList) {
    el.className = curClass;
  }
};

/* istanbul ignore next */
function removeClass(el, cls) {
  if (!el || !cls) return;
  var classes = cls.split(' ');
  var curClass = ' ' + el.className + ' ';

  for (var i = 0, j = classes.length; i < j; i++) {
    var clsName = classes[i];
    if (!clsName) continue;

    if (el.classList) {
      el.classList.remove(clsName);
    } else if (hasClass(el, clsName)) {
      curClass = curClass.replace(' ' + clsName + ' ', ' ');
    }
  }
  if (!el.classList) {
    el.className = trim(curClass);
  }
};

/* istanbul ignore next */
var getStyle = exports.getStyle = ieVersion < 9 ? function (element, styleName) {
  if (isServer) return;
  if (!element || !styleName) return null;
  styleName = camelCase(styleName);
  if (styleName === 'float') {
    styleName = 'styleFloat';
  }
  try {
    switch (styleName) {
      case 'opacity':
        try {
          return element.filters.item('alpha').opacity / 100;
        } catch (e) {
          return 1.0;
        }
      default:
        return element.style[styleName] || element.currentStyle ? element.currentStyle[styleName] : null;
    }
  } catch (e) {
    return element.style[styleName];
  }
} : function (element, styleName) {
  if (isServer) return;
  if (!element || !styleName) return null;
  styleName = camelCase(styleName);
  if (styleName === 'float') {
    styleName = 'cssFloat';
  }
  try {
    var computed = document.defaultView.getComputedStyle(element, '');
    return element.style[styleName] || computed ? computed[styleName] : null;
  } catch (e) {
    return element.style[styleName];
  }
};

/* istanbul ignore next */
function setStyle(element, styleName, value) {
  if (!element || !styleName) return;

  if ((typeof styleName === 'undefined' ? 'undefined' : _typeof(styleName)) === 'object') {
    for (var prop in styleName) {
      if (styleName.hasOwnProperty(prop)) {
        setStyle(element, prop, styleName[prop]);
      }
    }
  } else {
    styleName = camelCase(styleName);
    if (styleName === 'opacity' && ieVersion < 9) {
      element.style.filter = isNaN(value) ? '' : 'alpha(opacity=' + value * 100 + ')';
    } else {
      element.style[styleName] = value;
    }
  }
};

var isScroll = exports.isScroll = function isScroll(el, vertical) {
  if (isServer) return;

  var determinedDirection = vertical !== null || vertical !== undefined;
  var overflow = determinedDirection ? vertical ? getStyle(el, 'overflow-y') : getStyle(el, 'overflow-x') : getStyle(el, 'overflow');

  return overflow.match(/(scroll|auto)/);
};

var getScrollContainer = exports.getScrollContainer = function getScrollContainer(el, vertical) {
  if (isServer) return;

  var parent = el;
  while (parent) {
    if ([window, document, document.documentElement].includes(parent)) {
      return window;
    }
    if (isScroll(parent, vertical)) {
      return parent;
    }
    parent = parent.parentNode;
  }

  return parent;
};

var isInContainer = exports.isInContainer = function isInContainer(el, container) {
  if (isServer || !el || !container) return false;

  var elRect = el.getBoundingClientRect();
  var containerRect = void 0;

  if ([window, document, document.documentElement, null, undefined].includes(container)) {
    containerRect = {
      top: 0,
      right: window.innerWidth,
      bottom: window.innerHeight,
      left: 0
    };
  } else {
    containerRect = container.getBoundingClientRect();
  }

  return elRect.top < containerRect.bottom && elRect.bottom > containerRect.top && elRect.right > containerRect.left && elRect.left < containerRect.right;
};

/***/ }),

/***/ 4:
/***/ (function(module, exports) {

module.exports = require("vue");

/***/ })

/******/ });