primeng
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896 lines • 140 kB
JavaScript
import { CommonModule } from '@angular/common';
import { ChangeDetectionStrategy, Component, ContentChildren, EventEmitter, Input, NgModule, Output, ViewChild, ViewEncapsulation } from '@angular/core';
import { PrimeTemplate } from 'primeng/api';
import { DomHandler } from 'primeng/dom';
import * as i0 from "@angular/core";
import * as i1 from "@angular/common";
export class Scroller {
constructor(cd, zone) {
this.cd = cd;
this.zone = zone;
this.onLazyLoad = new EventEmitter();
this.onScroll = new EventEmitter();
this.onScrollIndexChange = new EventEmitter();
this._tabindex = 0;
this._itemSize = 0;
this._orientation = 'vertical';
this._step = 0;
this._delay = 0;
this._resizeDelay = 10;
this._appendOnly = false;
this._inline = false;
this._lazy = false;
this._disabled = false;
this._loaderDisabled = false;
this._showSpacer = true;
this._showLoader = false;
this._autoSize = false;
this.d_loading = false;
this.first = 0;
this.last = 0;
this.page = 0;
this.numItemsInViewport = 0;
this.lastScrollPos = 0;
this.lazyLoadState = {};
this.loaderArr = [];
this.spacerStyle = {};
this.contentStyle = {};
this.initialized = false;
}
get id() {
return this._id;
}
set id(val) {
this._id = val;
}
get style() {
return this._style;
}
set style(val) {
this._style = val;
}
get styleClass() {
return this._styleClass;
}
set styleClass(val) {
this._styleClass = val;
}
get tabindex() {
return this._tabindex;
}
set tabindex(val) {
this._tabindex = val;
}
get items() {
return this._items;
}
set items(val) {
this._items = val;
}
get itemSize() {
return this._itemSize;
}
set itemSize(val) {
this._itemSize = val;
}
get scrollHeight() {
return this._scrollHeight;
}
set scrollHeight(val) {
this._scrollHeight = val;
}
get scrollWidth() {
return this._scrollWidth;
}
set scrollWidth(val) {
this._scrollWidth = val;
}
get orientation() {
return this._orientation;
}
set orientation(val) {
this._orientation = val;
}
get step() {
return this._step;
}
set step(val) {
this._step = val;
}
get delay() {
return this._delay;
}
set delay(val) {
this._delay = val;
}
get resizeDelay() {
return this._resizeDelay;
}
set resizeDelay(val) {
this._resizeDelay = val;
}
get appendOnly() {
return this._appendOnly;
}
set appendOnly(val) {
this._appendOnly = val;
}
get inline() {
return this._inline;
}
set inline(val) {
this._inline = val;
}
get lazy() {
return this._lazy;
}
set lazy(val) {
this._lazy = val;
}
get disabled() {
return this._disabled;
}
set disabled(val) {
this._disabled = val;
}
get loaderDisabled() {
return this._loaderDisabled;
}
set loaderDisabled(val) {
this._loaderDisabled = val;
}
get columns() {
return this._columns;
}
set columns(val) {
this._columns = val;
}
get showSpacer() {
return this._showSpacer;
}
set showSpacer(val) {
this._showSpacer = val;
}
get showLoader() {
return this._showLoader;
}
set showLoader(val) {
this._showLoader = val;
}
get numToleratedItems() {
return this._numToleratedItems;
}
set numToleratedItems(val) {
this._numToleratedItems = val;
}
get loading() {
return this._loading;
}
set loading(val) {
this._loading = val;
}
get autoSize() {
return this._autoSize;
}
set autoSize(val) {
this._autoSize = val;
}
get trackBy() {
return this._trackBy;
}
set trackBy(val) {
this._trackBy = val;
}
get options() {
return this._options;
}
set options(val) {
this._options = val;
if (val && typeof val === 'object') {
Object.entries(val).forEach(([k, v]) => this[`_${k}`] !== v && (this[`_${k}`] = v));
}
}
get vertical() {
return this._orientation === 'vertical';
}
get horizontal() {
return this._orientation === 'horizontal';
}
get both() {
return this._orientation === 'both';
}
get loadedItems() {
if (this._items && !this.d_loading) {
if (this.both)
return this._items.slice(this._appendOnly ? 0 : this.first.rows, this.last.rows).map((item) => (this._columns ? item : item.slice(this._appendOnly ? 0 : this.first.cols, this.last.cols)));
else if (this.horizontal && this._columns)
return this._items;
else
return this._items.slice(this._appendOnly ? 0 : this.first, this.last);
}
return [];
}
get loadedRows() {
return this.d_loading ? (this._loaderDisabled ? this.loaderArr : []) : this.loadedItems;
}
get loadedColumns() {
if (this._columns && (this.both || this.horizontal)) {
return this.d_loading && this._loaderDisabled ? (this.both ? this.loaderArr[0] : this.loaderArr) : this._columns.slice(this.both ? this.first.cols : this.first, this.both ? this.last.cols : this.last);
}
return this._columns;
}
get isPageChanged() {
return this._step ? this.page !== this.getPageByFirst() : true;
}
ngOnInit() {
this.setInitialState();
}
ngOnChanges(simpleChanges) {
let isLoadingChanged = false;
if (simpleChanges.loading) {
const { previousValue, currentValue } = simpleChanges.loading;
if (this.lazy && previousValue !== currentValue && currentValue !== this.d_loading) {
this.d_loading = currentValue;
isLoadingChanged = true;
}
}
if (simpleChanges.orientation) {
this.lastScrollPos = this.both ? { top: 0, left: 0 } : 0;
}
if (simpleChanges.numToleratedItems) {
const { previousValue, currentValue } = simpleChanges.numToleratedItems;
if (previousValue !== currentValue && currentValue !== this.d_numToleratedItems) {
this.d_numToleratedItems = currentValue;
}
}
if (simpleChanges.options) {
const { previousValue, currentValue } = simpleChanges.options;
if (this.lazy && previousValue?.loading !== currentValue?.loading && currentValue?.loading !== this.d_loading) {
this.d_loading = currentValue.loading;
isLoadingChanged = true;
}
if (previousValue?.numToleratedItems !== currentValue?.numToleratedItems && currentValue?.numToleratedItems !== this.d_numToleratedItems) {
this.d_numToleratedItems = currentValue.numToleratedItems;
}
}
if (this.initialized) {
const isChanged = !isLoadingChanged && (simpleChanges.items?.previousValue?.length !== simpleChanges.items?.currentValue?.length || simpleChanges.itemSize || simpleChanges.scrollHeight || simpleChanges.scrollWidth);
isChanged && this.init();
}
}
ngAfterContentInit() {
this.templates.forEach((item) => {
switch (item.getType()) {
case 'content':
this.contentTemplate = item.template;
break;
case 'item':
this.itemTemplate = item.template;
break;
case 'loader':
this.loaderTemplate = item.template;
break;
case 'loadericon':
this.loaderIconTemplate = item.template;
break;
default:
this.itemTemplate = item.template;
break;
}
});
}
ngAfterViewInit() {
this.viewInit();
}
ngAfterViewChecked() {
if (!this.initialized) {
this.viewInit();
}
this.calculateAutoSize();
}
ngOnDestroy() {
this.unbindResizeListener();
this.contentEl = null;
this.initialized = false;
}
viewInit() {
if (DomHandler.isVisible(this.elementViewChild?.nativeElement)) {
this.setInitialState();
this.setContentEl(this.contentEl);
this.init();
this.defaultWidth = DomHandler.getWidth(this.elementViewChild.nativeElement);
this.defaultHeight = DomHandler.getHeight(this.elementViewChild.nativeElement);
this.initialized = true;
}
}
init() {
if (!this._disabled) {
this.setSize();
this.calculateOptions();
this.setSpacerSize();
this.bindResizeListener();
this.cd.detectChanges();
}
}
setContentEl(el) {
this.contentEl = el || this.contentViewChild?.nativeElement || DomHandler.findSingle(this.elementViewChild?.nativeElement, '.p-scroller-content');
}
setInitialState() {
this.first = this.both ? { rows: 0, cols: 0 } : 0;
this.last = this.both ? { rows: 0, cols: 0 } : 0;
this.numItemsInViewport = this.both ? { rows: 0, cols: 0 } : 0;
this.lastScrollPos = this.both ? { top: 0, left: 0 } : 0;
this.d_loading = this._loading || false;
this.d_numToleratedItems = this._numToleratedItems;
this.loaderArr = [];
this.spacerStyle = {};
this.contentStyle = {};
}
getElementRef() {
return this.elementViewChild;
}
getPageByFirst() {
return Math.floor((this.first + this.d_numToleratedItems * 4) / (this._step || 1));
}
scrollTo(options) {
this.lastScrollPos = this.both ? { top: 0, left: 0 } : 0;
this.elementViewChild?.nativeElement?.scrollTo(options);
}
scrollToIndex(index, behavior = 'auto') {
const { numToleratedItems } = this.calculateNumItems();
const contentPos = this.getContentPosition();
const calculateFirst = (_index = 0, _numT) => (_index <= _numT ? 0 : _index);
const calculateCoord = (_first, _size, _cpos) => _first * _size + _cpos;
const scrollTo = (left = 0, top = 0) => this.scrollTo({ left, top, behavior });
if (this.both) {
this.first = { rows: calculateFirst(index[0], numToleratedItems[0]), cols: calculateFirst(index[1], numToleratedItems[1]) };
scrollTo(calculateCoord(this.first.cols, this._itemSize[1], contentPos.left), calculateCoord(this.first.rows, this._itemSize[0], contentPos.top));
}
else {
this.first = calculateFirst(index, numToleratedItems);
this.horizontal ? scrollTo(calculateCoord(this.first, this._itemSize, contentPos.left), 0) : scrollTo(0, calculateCoord(this.first, this._itemSize, contentPos.top));
}
}
scrollInView(index, to, behavior = 'auto') {
if (to) {
const { first, viewport } = this.getRenderedRange();
const scrollTo = (left = 0, top = 0) => this.scrollTo({ left, top, behavior });
const isToStart = to === 'to-start';
const isToEnd = to === 'to-end';
if (isToStart) {
if (this.both) {
if (viewport.first.rows - first.rows > index[0]) {
scrollTo(viewport.first.cols * this._itemSize[1], (viewport.first.rows - 1) * this._itemSize[0]);
}
else if (viewport.first.cols - first.cols > index[1]) {
scrollTo((viewport.first.cols - 1) * this._itemSize[1], viewport.first.rows * this._itemSize[0]);
}
}
else {
if (viewport.first - first > index) {
const pos = (viewport.first - 1) * this._itemSize;
this.horizontal ? scrollTo(pos, 0) : scrollTo(0, pos);
}
}
}
else if (isToEnd) {
if (this.both) {
if (viewport.last.rows - first.rows <= index[0] + 1) {
scrollTo(viewport.first.cols * this._itemSize[1], (viewport.first.rows + 1) * this._itemSize[0]);
}
else if (viewport.last.cols - first.cols <= index[1] + 1) {
scrollTo((viewport.first.cols + 1) * this._itemSize[1], viewport.first.rows * this._itemSize[0]);
}
}
else {
if (viewport.last - first <= index + 1) {
const pos = (viewport.first + 1) * this._itemSize;
this.horizontal ? scrollTo(pos, 0) : scrollTo(0, pos);
}
}
}
}
else {
this.scrollToIndex(index, behavior);
}
}
getRenderedRange() {
const calculateFirstInViewport = (_pos, _size) => Math.floor(_pos / (_size || _pos));
let firstInViewport = this.first;
let lastInViewport = 0;
if (this.elementViewChild?.nativeElement) {
const { scrollTop, scrollLeft } = this.elementViewChild.nativeElement;
if (this.both) {
firstInViewport = { rows: calculateFirstInViewport(scrollTop, this._itemSize[0]), cols: calculateFirstInViewport(scrollLeft, this._itemSize[1]) };
lastInViewport = { rows: firstInViewport.rows + this.numItemsInViewport.rows, cols: firstInViewport.cols + this.numItemsInViewport.cols };
}
else {
const scrollPos = this.horizontal ? scrollLeft : scrollTop;
firstInViewport = calculateFirstInViewport(scrollPos, this._itemSize);
lastInViewport = firstInViewport + this.numItemsInViewport;
}
}
return {
first: this.first,
last: this.last,
viewport: {
first: firstInViewport,
last: lastInViewport
}
};
}
calculateNumItems() {
const contentPos = this.getContentPosition();
const contentWidth = this.elementViewChild?.nativeElement ? this.elementViewChild.nativeElement.offsetWidth - contentPos.left : 0;
const contentHeight = this.elementViewChild?.nativeElement ? this.elementViewChild.nativeElement.offsetHeight - contentPos.top : 0;
const calculateNumItemsInViewport = (_contentSize, _itemSize) => Math.ceil(_contentSize / (_itemSize || _contentSize));
const calculateNumToleratedItems = (_numItems) => Math.ceil(_numItems / 2);
const numItemsInViewport = this.both
? { rows: calculateNumItemsInViewport(contentHeight, this._itemSize[0]), cols: calculateNumItemsInViewport(contentWidth, this._itemSize[1]) }
: calculateNumItemsInViewport(this.horizontal ? contentWidth : contentHeight, this._itemSize);
const numToleratedItems = this.d_numToleratedItems || (this.both ? [calculateNumToleratedItems(numItemsInViewport.rows), calculateNumToleratedItems(numItemsInViewport.cols)] : calculateNumToleratedItems(numItemsInViewport));
return { numItemsInViewport, numToleratedItems };
}
calculateOptions() {
const { numItemsInViewport, numToleratedItems } = this.calculateNumItems();
const calculateLast = (_first, _num, _numT, _isCols = false) => this.getLast(_first + _num + (_first < _numT ? 2 : 3) * _numT, _isCols);
const first = this.first;
const last = this.both
? { rows: calculateLast(this.first.rows, numItemsInViewport.rows, numToleratedItems[0]), cols: calculateLast(this.first.cols, numItemsInViewport.cols, numToleratedItems[1], true) }
: calculateLast(this.first, numItemsInViewport, numToleratedItems);
this.last = last;
this.numItemsInViewport = numItemsInViewport;
this.d_numToleratedItems = numToleratedItems;
if (this.showLoader) {
this.loaderArr = this.both ? Array.from({ length: numItemsInViewport.rows }).map(() => Array.from({ length: numItemsInViewport.cols })) : Array.from({ length: numItemsInViewport });
}
if (this._lazy) {
Promise.resolve().then(() => {
this.lazyLoadState = {
first: this._step ? (this.both ? { rows: 0, cols: first.cols } : 0) : first,
last: Math.min(this._step ? this._step : this.last, this.items.length)
};
this.handleEvents('onLazyLoad', this.lazyLoadState);
});
}
}
calculateAutoSize() {
if (this._autoSize && !this.d_loading) {
Promise.resolve().then(() => {
if (this.contentEl) {
this.contentEl.style.minHeight = this.contentEl.style.minWidth = 'auto';
const { offsetWidth, offsetHeight } = this.contentEl;
(this.both || this.horizontal) && (this.elementViewChild.nativeElement.style.width = (offsetWidth < this.defaultWidth ? offsetWidth : this.defaultWidth) + 'px');
(this.both || this.vertical) && (this.elementViewChild.nativeElement.style.height = (offsetHeight < this.defaultHeight ? offsetHeight : this.defaultHeight) + 'px');
this.contentEl.style.minHeight = this.contentEl.style.minWidth = '';
}
});
}
}
getLast(last = 0, isCols = false) {
return this._items ? Math.min(isCols ? (this._columns || this._items[0]).length : this._items.length, last) : 0;
}
getContentPosition() {
if (this.contentEl) {
const style = getComputedStyle(this.contentEl);
const left = parseFloat(style.paddingLeft) + Math.max(parseFloat(style.left) || 0, 0);
const right = parseFloat(style.paddingRight) + Math.max(parseFloat(style.right) || 0, 0);
const top = parseFloat(style.paddingTop) + Math.max(parseFloat(style.top) || 0, 0);
const bottom = parseFloat(style.paddingBottom) + Math.max(parseFloat(style.bottom) || 0, 0);
return { left, right, top, bottom, x: left + right, y: top + bottom };
}
return { left: 0, right: 0, top: 0, bottom: 0, x: 0, y: 0 };
}
setSize() {
if (this.elementViewChild?.nativeElement) {
const parentElement = this.elementViewChild.nativeElement.parentElement.parentElement;
const width = this._scrollWidth || `${this.elementViewChild.nativeElement.offsetWidth || parentElement.offsetWidth}px`;
const height = this._scrollHeight || `${this.elementViewChild.nativeElement.offsetHeight || parentElement.offsetHeight}px`;
const setProp = (_name, _value) => (this.elementViewChild.nativeElement.style[_name] = _value);
if (this.both || this.horizontal) {
setProp('height', height);
setProp('width', width);
}
else {
setProp('height', height);
}
}
}
setSpacerSize() {
if (this._items) {
const contentPos = this.getContentPosition();
const setProp = (_name, _value, _size, _cpos = 0) => (this.spacerStyle = { ...this.spacerStyle, ...{ [`${_name}`]: (_value || []).length * _size + _cpos + 'px' } });
if (this.both) {
setProp('height', this._items, this._itemSize[0], contentPos.y);
setProp('width', this._columns || this._items[1], this._itemSize[1], contentPos.x);
}
else {
this.horizontal ? setProp('width', this._columns || this._items, this._itemSize, contentPos.x) : setProp('height', this._items, this._itemSize, contentPos.y);
}
}
}
setContentPosition(pos) {
if (this.contentEl && !this._appendOnly) {
const first = pos ? pos.first : this.first;
const calculateTranslateVal = (_first, _size) => _first * _size;
const setTransform = (_x = 0, _y = 0) => (this.contentStyle = { ...this.contentStyle, ...{ transform: `translate3d(${_x}px, ${_y}px, 0)` } });
if (this.both) {
setTransform(calculateTranslateVal(first.cols, this._itemSize[1]), calculateTranslateVal(first.rows, this._itemSize[0]));
}
else {
const translateVal = calculateTranslateVal(first, this._itemSize);
this.horizontal ? setTransform(translateVal, 0) : setTransform(0, translateVal);
}
}
}
onScrollPositionChange(event) {
const target = event.target;
const contentPos = this.getContentPosition();
const calculateScrollPos = (_pos, _cpos) => (_pos ? (_pos > _cpos ? _pos - _cpos : _pos) : 0);
const calculateCurrentIndex = (_pos, _size) => Math.floor(_pos / (_size || _pos));
const calculateTriggerIndex = (_currentIndex, _first, _last, _num, _numT, _isScrollDownOrRight) => {
return _currentIndex <= _numT ? _numT : _isScrollDownOrRight ? _last - _num - _numT : _first + _numT - 1;
};
const calculateFirst = (_currentIndex, _triggerIndex, _first, _last, _num, _numT, _isScrollDownOrRight) => {
if (_currentIndex <= _numT)
return 0;
else
return Math.max(0, _isScrollDownOrRight ? (_currentIndex < _triggerIndex ? _first : _currentIndex - _numT) : _currentIndex > _triggerIndex ? _first : _currentIndex - 2 * _numT);
};
const calculateLast = (_currentIndex, _first, _last, _num, _numT, _isCols = false) => {
let lastValue = _first + _num + 2 * _numT;
if (_currentIndex >= _numT) {
lastValue += _numT + 1;
}
return this.getLast(lastValue, _isCols);
};
const scrollTop = calculateScrollPos(target.scrollTop, contentPos.top);
const scrollLeft = calculateScrollPos(target.scrollLeft, contentPos.left);
let newFirst = this.both ? { rows: 0, cols: 0 } : 0;
let newLast = this.last;
let isRangeChanged = false;
let newScrollPos = this.lastScrollPos;
if (this.both) {
const isScrollDown = this.lastScrollPos.top <= scrollTop;
const isScrollRight = this.lastScrollPos.left <= scrollLeft;
if (!this._appendOnly || (this._appendOnly && (isScrollDown || isScrollRight))) {
const currentIndex = { rows: calculateCurrentIndex(scrollTop, this._itemSize[0]), cols: calculateCurrentIndex(scrollLeft, this._itemSize[1]) };
const triggerIndex = {
rows: calculateTriggerIndex(currentIndex.rows, this.first.rows, this.last.rows, this.numItemsInViewport.rows, this.d_numToleratedItems[0], isScrollDown),
cols: calculateTriggerIndex(currentIndex.cols, this.first.cols, this.last.cols, this.numItemsInViewport.cols, this.d_numToleratedItems[1], isScrollRight)
};
newFirst = {
rows: calculateFirst(currentIndex.rows, triggerIndex.rows, this.first.rows, this.last.rows, this.numItemsInViewport.rows, this.d_numToleratedItems[0], isScrollDown),
cols: calculateFirst(currentIndex.cols, triggerIndex.cols, this.first.cols, this.last.cols, this.numItemsInViewport.cols, this.d_numToleratedItems[1], isScrollRight)
};
newLast = {
rows: calculateLast(currentIndex.rows, newFirst.rows, this.last.rows, this.numItemsInViewport.rows, this.d_numToleratedItems[0]),
cols: calculateLast(currentIndex.cols, newFirst.cols, this.last.cols, this.numItemsInViewport.cols, this.d_numToleratedItems[1], true)
};
isRangeChanged = newFirst.rows !== this.first.rows || newLast.rows !== this.last.rows || newFirst.cols !== this.first.cols || newLast.cols !== this.last.cols;
newScrollPos = { top: scrollTop, left: scrollLeft };
}
}
else {
const scrollPos = this.horizontal ? scrollLeft : scrollTop;
const isScrollDownOrRight = this.lastScrollPos <= scrollPos;
if (!this._appendOnly || (this._appendOnly && isScrollDownOrRight)) {
const currentIndex = calculateCurrentIndex(scrollPos, this._itemSize);
const triggerIndex = calculateTriggerIndex(currentIndex, this.first, this.last, this.numItemsInViewport, this.d_numToleratedItems, isScrollDownOrRight);
newFirst = calculateFirst(currentIndex, triggerIndex, this.first, this.last, this.numItemsInViewport, this.d_numToleratedItems, isScrollDownOrRight);
newLast = calculateLast(currentIndex, newFirst, this.last, this.numItemsInViewport, this.d_numToleratedItems);
isRangeChanged = newFirst !== this.first || newLast !== this.last;
newScrollPos = scrollPos;
}
}
return {
first: newFirst,
last: newLast,
isRangeChanged,
scrollPos: newScrollPos
};
}
onScrollChange(event) {
const { first, last, isRangeChanged, scrollPos } = this.onScrollPositionChange(event);
if (isRangeChanged) {
const newState = { first, last };
this.setContentPosition(newState);
this.first = first;
this.last = last;
this.lastScrollPos = scrollPos;
this.handleEvents('onScrollIndexChange', newState);
if (this._lazy && this.isPageChanged) {
const lazyLoadState = {
first: this._step ? Math.min(this.getPageByFirst() * this._step, this.items.length - this._step) : first,
last: Math.min(this._step ? (this.getPageByFirst() + 1) * this._step : last, this.items.length)
};
const isLazyStateChanged = this.lazyLoadState.first !== lazyLoadState.first || this.lazyLoadState.last !== lazyLoadState.last;
isLazyStateChanged && this.handleEvents('onLazyLoad', lazyLoadState);
this.lazyLoadState = lazyLoadState;
}
}
}
onContainerScroll(event) {
this.handleEvents('onScroll', { originalEvent: event });
if (this._delay && this.isPageChanged) {
if (this.scrollTimeout) {
clearTimeout(this.scrollTimeout);
}
if (!this.d_loading && this.showLoader) {
const { isRangeChanged } = this.onScrollPositionChange(event);
const changed = isRangeChanged || (this._step ? this.isPageChanged : false);
if (changed) {
this.d_loading = true;
this.cd.detectChanges();
}
}
this.scrollTimeout = setTimeout(() => {
this.onScrollChange(event);
if (this.d_loading && this.showLoader && (!this._lazy || this._loading === undefined)) {
this.d_loading = false;
this.page = this.getPageByFirst();
this.cd.detectChanges();
}
}, this._delay);
}
else {
!this.d_loading && this.onScrollChange(event);
}
}
bindResizeListener() {
if (!this.windowResizeListener) {
this.zone.runOutsideAngular(() => {
this.windowResizeListener = this.onWindowResize.bind(this);
window.addEventListener('resize', this.windowResizeListener);
window.addEventListener('orientationchange', this.windowResizeListener);
});
}
}
unbindResizeListener() {
if (this.windowResizeListener) {
window.removeEventListener('resize', this.windowResizeListener);
window.removeEventListener('orientationchange', this.windowResizeListener);
this.windowResizeListener = null;
}
}
onWindowResize() {
if (this.resizeTimeout) {
clearTimeout(this.resizeTimeout);
}
this.resizeTimeout = setTimeout(() => {
if (DomHandler.isVisible(this.elementViewChild?.nativeElement)) {
const [width, height] = [DomHandler.getWidth(this.elementViewChild.nativeElement), DomHandler.getHeight(this.elementViewChild.nativeElement)];
const [isDiffWidth, isDiffHeight] = [width !== this.defaultWidth, height !== this.defaultHeight];
const reinit = this.both ? isDiffWidth || isDiffHeight : this.horizontal ? isDiffWidth : this.vertical ? isDiffHeight : false;
reinit &&
this.zone.run(() => {
this.d_numToleratedItems = this._numToleratedItems;
this.defaultWidth = width;
this.defaultHeight = height;
this.init();
});
}
}, this._resizeDelay);
}
handleEvents(name, params) {
return this.options && this.options[name] ? this.options[name](params) : this[name].emit(params);
}
getContentOptions() {
return {
contentStyleClass: `p-scroller-content ${this.d_loading ? 'p-scroller-loading' : ''}`,
items: this.loadedItems,
getItemOptions: (index) => this.getOptions(index),
loading: this.d_loading,
getLoaderOptions: (index, options) => this.getLoaderOptions(index, options),
itemSize: this._itemSize,
rows: this.loadedRows,
columns: this.loadedColumns,
spacerStyle: this.spacerStyle,
contentStyle: this.contentStyle,
vertical: this.vertical,
horizontal: this.horizontal,
both: this.both
};
}
getOptions(renderedIndex) {
const count = (this._items || []).length;
const index = this.both ? this.first.rows + renderedIndex : this.first + renderedIndex;
return {
index,
count,
first: index === 0,
last: index === count - 1,
even: index % 2 === 0,
odd: index % 2 !== 0
};
}
getLoaderOptions(index, extOptions) {
const count = this.loaderArr.length;
return {
index,
count,
first: index === 0,
last: index === count - 1,
even: index % 2 === 0,
odd: index % 2 !== 0,
...extOptions
};
}
}
Scroller.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.0.7", ngImport: i0, type: Scroller, deps: [{ token: i0.ChangeDetectorRef }, { token: i0.NgZone }], target: i0.ɵɵFactoryTarget.Component });
Scroller.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "14.0.7", type: Scroller, selector: "p-scroller", inputs: { id: "id", style: "style", styleClass: "styleClass", tabindex: "tabindex", items: "items", itemSize: "itemSize", scrollHeight: "scrollHeight", scrollWidth: "scrollWidth", orientation: "orientation", step: "step", delay: "delay", resizeDelay: "resizeDelay", appendOnly: "appendOnly", inline: "inline", lazy: "lazy", disabled: "disabled", loaderDisabled: "loaderDisabled", columns: "columns", showSpacer: "showSpacer", showLoader: "showLoader", numToleratedItems: "numToleratedItems", loading: "loading", autoSize: "autoSize", trackBy: "trackBy", options: "options" }, outputs: { onLazyLoad: "onLazyLoad", onScroll: "onScroll", onScrollIndexChange: "onScrollIndexChange" }, host: { classAttribute: "p-scroller-viewport p-element" }, queries: [{ propertyName: "templates", predicate: PrimeTemplate }], viewQueries: [{ propertyName: "elementViewChild", first: true, predicate: ["element"], descendants: true }, { propertyName: "contentViewChild", first: true, predicate: ["content"], descendants: true }], usesOnChanges: true, ngImport: i0, template: `
<ng-container *ngIf="!_disabled; else disabledContainer">
<div
#element
[attr.id]="_id"
[attr.tabindex]="tabindex"
[ngStyle]="_style"
[class]="_styleClass"
[ngClass]="{ 'p-scroller': true, 'p-scroller-inline': inline, 'p-both-scroll': both, 'p-horizontal-scroll': horizontal }"
(scroll)="onContainerScroll($event)"
>
<ng-container *ngIf="contentTemplate; else buildInContent">
<ng-container *ngTemplateOutlet="contentTemplate; context: { $implicit: loadedItems, options: getContentOptions() }"></ng-container>
</ng-container>
<ng-template #buildInContent>
<div #content class="p-scroller-content" [ngClass]="{ 'p-scroller-loading': d_loading }" [ngStyle]="contentStyle">
<ng-container *ngFor="let item of loadedItems; let index = index; trackBy: _trackBy || index">
<ng-container *ngTemplateOutlet="itemTemplate; context: { $implicit: item, options: getOptions(index) }"></ng-container>
</ng-container>
</div>
</ng-template>
<div *ngIf="_showSpacer" class="p-scroller-spacer" [ngStyle]="spacerStyle"></div>
<div *ngIf="!loaderDisabled && _showLoader && d_loading" class="p-scroller-loader" [ngClass]="{ 'p-component-overlay': !loaderTemplate }">
<ng-container *ngIf="loaderTemplate; else buildInLoader">
<ng-container *ngFor="let item of loaderArr; let index = index">
<ng-container *ngTemplateOutlet="loaderTemplate; context: { options: getLoaderOptions(index, both && { numCols: _numItemsInViewport.cols }) }"></ng-container>
</ng-container>
</ng-container>
<ng-template #buildInLoader>
<ng-container *ngIf="loaderIconTemplate; else buildInLoaderIcon">
<ng-container *ngTemplateOutlet="loaderIconTemplate; context: { options: { styleClass: 'p-scroller-loading-icon' } }"></ng-container>
</ng-container>
<ng-template #buildInLoaderIcon>
<i class="p-scroller-loading-icon pi pi-spinner pi-spin"></i>
</ng-template>
</ng-template>
</div>
</div>
</ng-container>
<ng-template #disabledContainer>
<ng-content></ng-content>
<ng-container *ngIf="contentTemplate">
<ng-container *ngTemplateOutlet="contentTemplate; context: { $implicit: items, options: { rows: _items, columns: loadedColumns } }"></ng-container>
</ng-container>
</ng-template>
`, isInline: true, styles: ["p-scroller{flex:1;outline:0 none}.p-scroller{position:relative;overflow:auto;contain:strict;transform:translateZ(0);will-change:scroll-position;outline:0 none}.p-scroller-content{position:absolute;top:0;left:0;min-height:100%;min-width:100%;will-change:transform}.p-scroller-spacer{position:absolute;top:0;left:0;height:1px;width:1px;transform-origin:0 0;pointer-events:none}.p-scroller-loader{position:sticky;top:0;left:0;width:100%;height:100%}.p-scroller-loader.p-component-overlay{display:flex;align-items:center;justify-content:center}.p-scroller-loading-icon{font-size:2rem}.p-scroller-inline .p-scroller-content{position:static}\n"], dependencies: [{ kind: "directive", type: i1.NgClass, selector: "[ngClass]", inputs: ["class", "ngClass"] }, { kind: "directive", type: i1.NgForOf, selector: "[ngFor][ngForOf]", inputs: ["ngForOf", "ngForTrackBy", "ngForTemplate"] }, { kind: "directive", type: i1.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }, { kind: "directive", type: i1.NgTemplateOutlet, selector: "[ngTemplateOutlet]", inputs: ["ngTemplateOutletContext", "ngTemplateOutlet", "ngTemplateOutletInjector"] }, { kind: "directive", type: i1.NgStyle, selector: "[ngStyle]", inputs: ["ngStyle"] }], changeDetection: i0.ChangeDetectionStrategy.Default, encapsulation: i0.ViewEncapsulation.None });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.0.7", ngImport: i0, type: Scroller, decorators: [{
type: Component,
args: [{ selector: 'p-scroller', template: `
<ng-container *ngIf="!_disabled; else disabledContainer">
<div
#element
[attr.id]="_id"
[attr.tabindex]="tabindex"
[ngStyle]="_style"
[class]="_styleClass"
[ngClass]="{ 'p-scroller': true, 'p-scroller-inline': inline, 'p-both-scroll': both, 'p-horizontal-scroll': horizontal }"
(scroll)="onContainerScroll($event)"
>
<ng-container *ngIf="contentTemplate; else buildInContent">
<ng-container *ngTemplateOutlet="contentTemplate; context: { $implicit: loadedItems, options: getContentOptions() }"></ng-container>
</ng-container>
<ng-template #buildInContent>
<div #content class="p-scroller-content" [ngClass]="{ 'p-scroller-loading': d_loading }" [ngStyle]="contentStyle">
<ng-container *ngFor="let item of loadedItems; let index = index; trackBy: _trackBy || index">
<ng-container *ngTemplateOutlet="itemTemplate; context: { $implicit: item, options: getOptions(index) }"></ng-container>
</ng-container>
</div>
</ng-template>
<div *ngIf="_showSpacer" class="p-scroller-spacer" [ngStyle]="spacerStyle"></div>
<div *ngIf="!loaderDisabled && _showLoader && d_loading" class="p-scroller-loader" [ngClass]="{ 'p-component-overlay': !loaderTemplate }">
<ng-container *ngIf="loaderTemplate; else buildInLoader">
<ng-container *ngFor="let item of loaderArr; let index = index">
<ng-container *ngTemplateOutlet="loaderTemplate; context: { options: getLoaderOptions(index, both && { numCols: _numItemsInViewport.cols }) }"></ng-container>
</ng-container>
</ng-container>
<ng-template #buildInLoader>
<ng-container *ngIf="loaderIconTemplate; else buildInLoaderIcon">
<ng-container *ngTemplateOutlet="loaderIconTemplate; context: { options: { styleClass: 'p-scroller-loading-icon' } }"></ng-container>
</ng-container>
<ng-template #buildInLoaderIcon>
<i class="p-scroller-loading-icon pi pi-spinner pi-spin"></i>
</ng-template>
</ng-template>
</div>
</div>
</ng-container>
<ng-template #disabledContainer>
<ng-content></ng-content>
<ng-container *ngIf="contentTemplate">
<ng-container *ngTemplateOutlet="contentTemplate; context: { $implicit: items, options: { rows: _items, columns: loadedColumns } }"></ng-container>
</ng-container>
</ng-template>
`, changeDetection: ChangeDetectionStrategy.Default, encapsulation: ViewEncapsulation.None, host: {
class: 'p-scroller-viewport p-element'
}, styles: ["p-scroller{flex:1;outline:0 none}.p-scroller{position:relative;overflow:auto;contain:strict;transform:translateZ(0);will-change:scroll-position;outline:0 none}.p-scroller-content{position:absolute;top:0;left:0;min-height:100%;min-width:100%;will-change:transform}.p-scroller-spacer{position:absolute;top:0;left:0;height:1px;width:1px;transform-origin:0 0;pointer-events:none}.p-scroller-loader{position:sticky;top:0;left:0;width:100%;height:100%}.p-scroller-loader.p-component-overlay{display:flex;align-items:center;justify-content:center}.p-scroller-loading-icon{font-size:2rem}.p-scroller-inline .p-scroller-content{position:static}\n"] }]
}], ctorParameters: function () { return [{ type: i0.ChangeDetectorRef }, { type: i0.NgZone }]; }, propDecorators: { id: [{
type: Input
}], style: [{
type: Input
}], styleClass: [{
type: Input
}], tabindex: [{
type: Input
}], items: [{
type: Input
}], itemSize: [{
type: Input
}], scrollHeight: [{
type: Input
}], scrollWidth: [{
type: Input
}], orientation: [{
type: Input
}], step: [{
type: Input
}], delay: [{
type: Input
}], resizeDelay: [{
type: Input
}], appendOnly: [{
type: Input
}], inline: [{
type: Input
}], lazy: [{
type: Input
}], disabled: [{
type: Input
}], loaderDisabled: [{
type: Input
}], columns: [{
type: Input
}], showSpacer: [{
type: Input
}], showLoader: [{
type: Input
}], numToleratedItems: [{
type: Input
}], loading: [{
type: Input
}], autoSize: [{
type: Input
}], trackBy: [{
type: Input
}], options: [{
type: Input
}], elementViewChild: [{
type: ViewChild,
args: ['element']
}], contentViewChild: [{
type: ViewChild,
args: ['content']
}], templates: [{
type: ContentChildren,
args: [PrimeTemplate]
}], onLazyLoad: [{
type: Output
}], onScroll: [{
type: Output
}], onScrollIndexChange: [{
type: Output
}] } });
export class ScrollerModule {
}
ScrollerModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.0.7", ngImport: i0, type: ScrollerModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
ScrollerModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "14.0.7", ngImport: i0, type: ScrollerModule, declarations: [Scroller], imports: [CommonModule], exports: [Scroller] });
ScrollerModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "14.0.7", ngImport: i0, type: ScrollerModule, imports: [CommonModule] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.0.7", ngImport: i0, type: ScrollerModule, decorators: [{
type: NgModule,
args: [{
imports: [CommonModule],
exports: [Scroller],
declarations: [Scroller]
}]
}] });
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