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"use strict";
(self["webpackChunkapp"] = self["webpackChunkapp"] || []).push([["node_modules_ionic_core_dist_esm_ion-virtual-scroll_entry_js"],{

/***/ 39043:
/*!***********************************************************************!*\
  !*** ./node_modules/@ionic/core/dist/esm/ion-virtual-scroll.entry.js ***!
  \***********************************************************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {

__webpack_require__.r(__webpack_exports__);
/* harmony export */ __webpack_require__.d(__webpack_exports__, {
/* harmony export */   "ion_virtual_scroll": () => (/* binding */ VirtualScroll)
/* harmony export */ });
/* harmony import */ var F_www_mayer_app_node_modules_babel_runtime_helpers_esm_asyncToGenerator__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./node_modules/@babel/runtime/helpers/esm/asyncToGenerator */ 19369);
/* harmony import */ var _index_06cd27b1_js__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./index-06cd27b1.js */ 88179);
/* harmony import */ var _helpers_eed79a2b_js__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./helpers-eed79a2b.js */ 17998);


/*!
 * (C) Ionic http://ionicframework.com - MIT License
 */


const CELL_TYPE_ITEM = 'item';
const CELL_TYPE_HEADER = 'header';
const CELL_TYPE_FOOTER = 'footer';
const NODE_CHANGE_NONE = 0;
const NODE_CHANGE_POSITION = 1;
const NODE_CHANGE_CELL = 2;
const MIN_READS = 2;

const updateVDom = (dom, heightIndex, cells, range) => {
  // reset dom
  for (const node of dom) {
    node.change = NODE_CHANGE_NONE;
    node.d = true;
  } // try to match into exisiting dom


  const toMutate = [];
  const end = range.offset + range.length;

  for (let i = range.offset; i < end; i++) {
    const cell = cells[i];
    const node = dom.find(n => n.d && n.cell === cell);

    if (node) {
      const top = heightIndex[i];

      if (top !== node.top) {
        node.top = top;
        node.change = NODE_CHANGE_POSITION;
      }

      node.d = false;
    } else {
      toMutate.push(cell);
    }
  } // needs to append


  const pool = dom.filter(n => n.d);

  for (const cell of toMutate) {
    const node = pool.find(n => n.d && n.cell.type === cell.type);
    const index = cell.i;

    if (node) {
      node.d = false;
      node.change = NODE_CHANGE_CELL;
      node.cell = cell;
      node.top = heightIndex[index];
    } else {
      dom.push({
        d: false,
        cell,
        visible: true,
        change: NODE_CHANGE_CELL,
        top: heightIndex[index]
      });
    }
  }

  dom.filter(n => n.d && n.top !== -9999).forEach(n => {
    n.change = NODE_CHANGE_POSITION;
    n.top = -9999;
  });
};

const doRender = (el, nodeRender, dom, updateCellHeight) => {
  const children = Array.from(el.children).filter(n => n.tagName !== 'TEMPLATE');
  const childrenNu = children.length;
  let child;

  for (let i = 0; i < dom.length; i++) {
    const node = dom[i];
    const cell = node.cell; // the cell change, the content must be updated

    if (node.change === NODE_CHANGE_CELL) {
      if (i < childrenNu) {
        child = children[i];
        nodeRender(child, cell, i);
      } else {
        const newChild = createNode(el, cell.type);
        child = nodeRender(newChild, cell, i) || newChild;
        child.classList.add('virtual-item');
        el.appendChild(child);
      }

      child['$ionCell'] = cell;
    } else {
      child = children[i];
    } // only update position when it changes


    if (node.change !== NODE_CHANGE_NONE) {
      child.style.transform = `translate3d(0,${node.top}px,0)`;
    } // update visibility


    const visible = cell.visible;

    if (node.visible !== visible) {
      if (visible) {
        child.classList.remove('virtual-loading');
      } else {
        child.classList.add('virtual-loading');
      }

      node.visible = visible;
    } // dynamic height


    if (cell.reads > 0) {
      updateCellHeight(cell, child);
      cell.reads--;
    }
  }
};

const createNode = (el, type) => {
  const template = getTemplate(el, type);

  if (template && el.ownerDocument) {
    return el.ownerDocument.importNode(template.content, true).children[0];
  }

  return null;
};

const getTemplate = (el, type) => {
  switch (type) {
    case CELL_TYPE_ITEM:
      return el.querySelector('template:not([name])');

    case CELL_TYPE_HEADER:
      return el.querySelector('template[name=header]');

    case CELL_TYPE_FOOTER:
      return el.querySelector('template[name=footer]');
  }
};

const getViewport = (scrollTop, vierportHeight, margin) => {
  return {
    top: Math.max(scrollTop - margin, 0),
    bottom: scrollTop + vierportHeight + margin
  };
};

const getRange = (heightIndex, viewport, buffer) => {
  const topPos = viewport.top;
  const bottomPos = viewport.bottom; // find top index

  let i = 0;

  for (; i < heightIndex.length; i++) {
    if (heightIndex[i] > topPos) {
      break;
    }
  }

  const offset = Math.max(i - buffer - 1, 0); // find bottom index

  for (; i < heightIndex.length; i++) {
    if (heightIndex[i] >= bottomPos) {
      break;
    }
  }

  const end = Math.min(i + buffer, heightIndex.length);
  const length = end - offset;
  return {
    offset,
    length
  };
};

const getShouldUpdate = (dirtyIndex, currentRange, range) => {
  const end = range.offset + range.length;
  return dirtyIndex <= end || currentRange.offset !== range.offset || currentRange.length !== range.length;
};

const findCellIndex = (cells, index) => {
  const max = cells.length > 0 ? cells[cells.length - 1].index : 0;

  if (index === 0) {
    return 0;
  } else if (index === max + 1) {
    return cells.length;
  } else {
    return cells.findIndex(c => c.index === index);
  }
};

const inplaceUpdate = (dst, src, offset) => {
  if (offset === 0 && src.length >= dst.length) {
    return src;
  }

  for (let i = 0; i < src.length; i++) {
    dst[i + offset] = src[i];
  }

  return dst;
};

const calcCells = (items, itemHeight, headerHeight, footerHeight, headerFn, footerFn, approxHeaderHeight, approxFooterHeight, approxItemHeight, j, offset, len) => {
  const cells = [];
  const end = len + offset;

  for (let i = offset; i < end; i++) {
    const item = items[i];

    if (headerFn) {
      const value = headerFn(item, i, items);

      if (value != null) {
        cells.push({
          i: j++,
          type: CELL_TYPE_HEADER,
          value,
          index: i,
          height: headerHeight ? headerHeight(value, i) : approxHeaderHeight,
          reads: headerHeight ? 0 : MIN_READS,
          visible: !!headerHeight
        });
      }
    }

    cells.push({
      i: j++,
      type: CELL_TYPE_ITEM,
      value: item,
      index: i,
      height: itemHeight ? itemHeight(item, i) : approxItemHeight,
      reads: itemHeight ? 0 : MIN_READS,
      visible: !!itemHeight
    });

    if (footerFn) {
      const value = footerFn(item, i, items);

      if (value != null) {
        cells.push({
          i: j++,
          type: CELL_TYPE_FOOTER,
          value,
          index: i,
          height: footerHeight ? footerHeight(value, i) : approxFooterHeight,
          reads: footerHeight ? 0 : MIN_READS,
          visible: !!footerHeight
        });
      }
    }
  }

  return cells;
};

const calcHeightIndex = (buf, cells, index) => {
  let acum = buf[index];

  for (let i = index; i < buf.length; i++) {
    buf[i] = acum;
    acum += cells[i].height;
  }

  return acum;
};

const resizeBuffer = (buf, len) => {
  if (!buf) {
    return new Uint32Array(len);
  }

  if (buf.length === len) {
    return buf;
  } else if (len > buf.length) {
    const newBuf = new Uint32Array(len);
    newBuf.set(buf);
    return newBuf;
  } else {
    return buf.subarray(0, len);
  }
};

const positionForIndex = (index, cells, heightIndex) => {
  const cell = cells.find(c => c.type === CELL_TYPE_ITEM && c.index === index);

  if (cell) {
    return heightIndex[cell.i];
  }

  return -1;
};

const virtualScrollCss = "ion-virtual-scroll{display:block;position:relative;width:100%;contain:strict;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}ion-virtual-scroll>.virtual-loading{opacity:0}ion-virtual-scroll>.virtual-item{position:absolute !important;top:0 !important;right:0 !important;left:0 !important;-webkit-transition-duration:0ms;transition-duration:0ms;will-change:transform}";
let VirtualScroll = class {
  constructor(hostRef) {
    (0,_index_06cd27b1_js__WEBPACK_IMPORTED_MODULE_1__.r)(this, hostRef);
    this.range = {
      offset: 0,
      length: 0
    };
    this.viewportHeight = 0;
    this.cells = [];
    this.virtualDom = [];
    this.isEnabled = false;
    this.viewportOffset = 0;
    this.currentScrollTop = 0;
    this.indexDirty = 0;
    this.lastItemLen = 0;
    this.totalHeight = 0;
    /**
     * It is important to provide this
     * if virtual item height will be significantly larger than the default
     * The approximate height of each virtual item template's cell.
     * This dimension is used to help determine how many cells should
     * be created when initialized, and to help calculate the height of
     * the scrollable area. This height value can only use `px` units.
     * Note that the actual rendered size of each cell comes from the
     * app's CSS, whereas this approximation is used to help calculate
     * initial dimensions before the item has been rendered.
     */

    this.approxItemHeight = 45;
    /**
     * The approximate height of each header template's cell.
     * This dimension is used to help determine how many cells should
     * be created when initialized, and to help calculate the height of
     * the scrollable area. This height value can only use `px` units.
     * Note that the actual rendered size of each cell comes from the
     * app's CSS, whereas this approximation is used to help calculate
     * initial dimensions before the item has been rendered.
     */

    this.approxHeaderHeight = 30;
    /**
     * The approximate width of each footer template's cell.
     * This dimension is used to help determine how many cells should
     * be created when initialized, and to help calculate the height of
     * the scrollable area. This height value can only use `px` units.
     * Note that the actual rendered size of each cell comes from the
     * app's CSS, whereas this approximation is used to help calculate
     * initial dimensions before the item has been rendered.
     */

    this.approxFooterHeight = 30;

    this.onScroll = () => {
      this.updateVirtualScroll();
    };
  }

  itemsChanged() {
    this.calcCells();
    this.updateVirtualScroll();
  }

  componentWillLoad() {
    console.warn(`[Deprecation Warning]: ion-virtual-scroll has been deprecated and will be removed in Ionic Framework v7.0. See https://ionicframework.com/docs/angular/virtual-scroll for migration steps.`);
  }

  connectedCallback() {
    var _this = this;

    return (0,F_www_mayer_app_node_modules_babel_runtime_helpers_esm_asyncToGenerator__WEBPACK_IMPORTED_MODULE_0__.default)(function* () {
      const contentEl = _this.el.closest('ion-content');

      if (!contentEl) {
        console.error('<ion-virtual-scroll> must be used inside an <ion-content>');
        return;
      }

      _this.scrollEl = yield contentEl.getScrollElement();
      _this.contentEl = contentEl;

      _this.calcCells();

      _this.updateState();
    })();
  }

  componentDidUpdate() {
    this.updateState();
  }

  disconnectedCallback() {
    this.scrollEl = undefined;
  }

  onResize() {
    this.calcCells();
    this.updateVirtualScroll();
  }
  /**
   * Returns the position of the virtual item at the given index.
   */


  positionForItem(index) {
    return Promise.resolve(positionForIndex(index, this.cells, this.getHeightIndex()));
  }
  /**
   * This method marks a subset of items as dirty, so they can be re-rendered. Items should be marked as
   * dirty any time the content or their style changes.
   *
   * The subset of items to be updated can are specifing by an offset and a length.
   */


  checkRange(offset, len = -1) {
    var _this2 = this;

    return (0,F_www_mayer_app_node_modules_babel_runtime_helpers_esm_asyncToGenerator__WEBPACK_IMPORTED_MODULE_0__.default)(function* () {
      // TODO: kind of hacky how we do in-place updated of the cells
      // array. this part needs a complete refactor
      if (!_this2.items) {
        return;
      }

      const length = len === -1 ? _this2.items.length - offset : len;
      const cellIndex = findCellIndex(_this2.cells, offset);
      const cells = calcCells(_this2.items, _this2.itemHeight, _this2.headerHeight, _this2.footerHeight, _this2.headerFn, _this2.footerFn, _this2.approxHeaderHeight, _this2.approxFooterHeight, _this2.approxItemHeight, cellIndex, offset, length);
      _this2.cells = inplaceUpdate(_this2.cells, cells, cellIndex);
      _this2.lastItemLen = _this2.items.length;
      _this2.indexDirty = Math.max(offset - 1, 0);

      _this2.scheduleUpdate();
    })();
  }
  /**
   * This method marks the tail the items array as dirty, so they can be re-rendered.
   *
   * It's equivalent to calling:
   *
   * ```js
   * virtualScroll.checkRange(lastItemLen);
   * ```
   */


  checkEnd() {
    var _this3 = this;

    return (0,F_www_mayer_app_node_modules_babel_runtime_helpers_esm_asyncToGenerator__WEBPACK_IMPORTED_MODULE_0__.default)(function* () {
      if (_this3.items) {
        _this3.checkRange(_this3.lastItemLen);
      }
    })();
  }

  updateVirtualScroll() {
    // do nothing if virtual-scroll is disabled
    if (!this.isEnabled || !this.scrollEl) {
      return;
    } // unschedule future updates


    if (this.timerUpdate) {
      clearTimeout(this.timerUpdate);
      this.timerUpdate = undefined;
    } // schedule DOM operations into the stencil queue


    (0,_index_06cd27b1_js__WEBPACK_IMPORTED_MODULE_1__.f)(this.readVS.bind(this));
    (0,_index_06cd27b1_js__WEBPACK_IMPORTED_MODULE_1__.c)(this.writeVS.bind(this));
  }

  readVS() {
    const {
      contentEl,
      scrollEl,
      el
    } = this;
    let topOffset = 0;
    let node = el;

    while (node && node !== contentEl) {
      topOffset += node.offsetTop;
      node = node.offsetParent;
    }

    this.viewportOffset = topOffset;

    if (scrollEl) {
      this.viewportHeight = scrollEl.offsetHeight;
      this.currentScrollTop = scrollEl.scrollTop;
    }
  }

  writeVS() {
    const dirtyIndex = this.indexDirty; // get visible viewport

    const scrollTop = this.currentScrollTop - this.viewportOffset;
    const viewport = getViewport(scrollTop, this.viewportHeight, 100); // compute lazily the height index

    const heightIndex = this.getHeightIndex(); // get array bounds of visible cells base in the viewport

    const range = getRange(heightIndex, viewport, 2); // fast path, do nothing

    const shouldUpdate = getShouldUpdate(dirtyIndex, this.range, range);

    if (!shouldUpdate) {
      return;
    }

    this.range = range; // in place mutation of the virtual DOM

    updateVDom(this.virtualDom, heightIndex, this.cells, range); // Write DOM
    // Different code paths taken depending of the render API used

    if (this.nodeRender) {
      doRender(this.el, this.nodeRender, this.virtualDom, this.updateCellHeight.bind(this));
    } else if (this.domRender) {
      this.domRender(this.virtualDom);
    } else if (this.renderItem) {
      (0,_index_06cd27b1_js__WEBPACK_IMPORTED_MODULE_1__.j)(this);
    }
  }

  updateCellHeight(cell, node) {
    const update = () => {
      if (node['$ionCell'] === cell) {
        const style = window.getComputedStyle(node);
        const height = node.offsetHeight + parseFloat(style.getPropertyValue('margin-bottom'));
        this.setCellHeight(cell, height);
      }
    };

    if (node) {
      (0,_helpers_eed79a2b_js__WEBPACK_IMPORTED_MODULE_2__.c)(node, update);
    } else {
      update();
    }
  }

  setCellHeight(cell, height) {
    const index = cell.i; // the cell might changed since the height update was scheduled

    if (cell !== this.cells[index]) {
      return;
    }

    if (cell.height !== height || cell.visible !== true) {
      cell.visible = true;
      cell.height = height;
      this.indexDirty = Math.min(this.indexDirty, index);
      this.scheduleUpdate();
    }
  }

  scheduleUpdate() {
    clearTimeout(this.timerUpdate);
    this.timerUpdate = setTimeout(() => this.updateVirtualScroll(), 100);
  }

  updateState() {
    const shouldEnable = !!(this.scrollEl && this.cells);

    if (shouldEnable !== this.isEnabled) {
      this.enableScrollEvents(shouldEnable);

      if (shouldEnable) {
        this.updateVirtualScroll();
      }
    }
  }

  calcCells() {
    if (!this.items) {
      return;
    }

    this.lastItemLen = this.items.length;
    this.cells = calcCells(this.items, this.itemHeight, this.headerHeight, this.footerHeight, this.headerFn, this.footerFn, this.approxHeaderHeight, this.approxFooterHeight, this.approxItemHeight, 0, 0, this.lastItemLen);
    this.indexDirty = 0;
  }

  getHeightIndex() {
    if (this.indexDirty !== Infinity) {
      this.calcHeightIndex(this.indexDirty);
    }

    return this.heightIndex;
  }

  calcHeightIndex(index = 0) {
    // TODO: optimize, we don't need to calculate all the cells
    this.heightIndex = resizeBuffer(this.heightIndex, this.cells.length);
    this.totalHeight = calcHeightIndex(this.heightIndex, this.cells, index);
    this.indexDirty = Infinity;
  }

  enableScrollEvents(shouldListen) {
    if (this.rmEvent) {
      this.rmEvent();
      this.rmEvent = undefined;
    }

    const scrollEl = this.scrollEl;

    if (scrollEl) {
      this.isEnabled = shouldListen;
      scrollEl.addEventListener('scroll', this.onScroll);

      this.rmEvent = () => {
        scrollEl.removeEventListener('scroll', this.onScroll);
      };
    }
  }

  renderVirtualNode(node) {
    const {
      type,
      value,
      index
    } = node.cell;

    switch (type) {
      case CELL_TYPE_ITEM:
        return this.renderItem(value, index);

      case CELL_TYPE_HEADER:
        return this.renderHeader(value, index);

      case CELL_TYPE_FOOTER:
        return this.renderFooter(value, index);
    }
  }

  render() {
    return (0,_index_06cd27b1_js__WEBPACK_IMPORTED_MODULE_1__.h)(_index_06cd27b1_js__WEBPACK_IMPORTED_MODULE_1__.H, {
      style: {
        height: `${this.totalHeight}px`
      }
    }, this.renderItem && (0,_index_06cd27b1_js__WEBPACK_IMPORTED_MODULE_1__.h)(VirtualProxy, {
      dom: this.virtualDom
    }, this.virtualDom.map(node => this.renderVirtualNode(node))));
  }

  get el() {
    return (0,_index_06cd27b1_js__WEBPACK_IMPORTED_MODULE_1__.i)(this);
  }

  static get watchers() {
    return {
      "itemHeight": ["itemsChanged"],
      "headerHeight": ["itemsChanged"],
      "footerHeight": ["itemsChanged"],
      "items": ["itemsChanged"]
    };
  }

};

const VirtualProxy = ({
  dom
}, children, utils) => {
  return utils.map(children, (child, i) => {
    const node = dom[i];
    const vattrs = child.vattrs || {};
    let classes = vattrs.class || '';
    classes += 'virtual-item ';

    if (!node.visible) {
      classes += 'virtual-loading';
    }

    return Object.assign(Object.assign({}, child), {
      vattrs: Object.assign(Object.assign({}, vattrs), {
        class: classes,
        style: Object.assign(Object.assign({}, vattrs.style), {
          transform: `translate3d(0,${node.top}px,0)`
        })
      })
    });
  });
};

VirtualScroll.style = virtualScrollCss;


/***/ })

}]);
//# sourceMappingURL=node_modules_ionic_core_dist_esm_ion-virtual-scroll_entry_js.js.map