primeng
Version:
[](https://opensource.org/licenses/MIT) [](https://badge.fury.io/js/primeng) [ • 11.6 kB
JavaScript
import * as i0 from '@angular/core';
import { EventEmitter, Component, ChangeDetectionStrategy, ViewEncapsulation, Input, ContentChild, ContentChildren, ViewChild, Output, NgModule } from '@angular/core';
import * as i2 from '@angular/common';
import { CommonModule } from '@angular/common';
import { Header, Footer, PrimeTemplate, SharedModule } from 'primeng/api';
import * as i1 from '@angular/cdk/scrolling';
import { CdkVirtualScrollViewport, ScrollingModule } from '@angular/cdk/scrolling';
class VirtualScroller {
constructor(el) {
this.el = el;
this.delay = 250;
this.trackBy = (index, item) => item;
this.onLazyLoad = new EventEmitter();
this._totalRecords = 0;
this.page = 0;
this._first = 0;
}
get totalRecords() {
return this._totalRecords;
}
set totalRecords(val) {
this._totalRecords = val;
console.log("totalRecords is deprecated, provide a value with the length of virtual items instead.");
}
get first() {
return this._first;
}
set first(val) {
this._first = val;
console.log("first property is deprecated, use scrollToIndex function to scroll a specific item.");
}
get cache() {
return this._cache;
}
set cache(val) {
this._cache = val;
console.log("cache is deprecated as it is always on.");
}
ngAfterContentInit() {
this.templates.forEach((item) => {
switch (item.getType()) {
case 'item':
this.itemTemplate = item.template;
break;
case 'loadingItem':
this.loadingItemTemplate = item.template;
break;
case 'header':
this.headerTemplate = item.template;
break;
case 'footer':
this.footerTemplate = item.template;
break;
default:
this.itemTemplate = item.template;
break;
}
});
}
onScrollIndexChange(index) {
if (this.lazy) {
if (this.virtualScrollTimeout) {
clearTimeout(this.virtualScrollTimeout);
}
this.virtualScrollTimeout = setTimeout(() => {
let page = Math.floor(index / this.rows);
let virtualScrollOffset = page === 0 ? 0 : (page - 1) * this.rows;
let virtualScrollChunkSize = page === 0 ? this.rows * 2 : this.rows * 3;
if (page !== this.virtualPage) {
this.virtualPage = page;
this.onLazyLoad.emit({ first: virtualScrollOffset, rows: virtualScrollChunkSize });
}
}, this.delay);
}
}
getBlockableElement() {
return this.el.nativeElement.children[0];
}
//@deprecated
scrollTo(index, mode) {
this.scrollToIndex(index, mode);
}
scrollToIndex(index, mode) {
if (this.viewport) {
this.viewport.scrollToIndex(index, mode);
}
}
}
VirtualScroller.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: VirtualScroller, deps: [{ token: i0.ElementRef }], target: i0.ɵɵFactoryTarget.Component });
VirtualScroller.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "12.0.0", version: "12.0.4", type: VirtualScroller, selector: "p-virtualScroller", inputs: { value: "value", itemSize: "itemSize", style: "style", styleClass: "styleClass", scrollHeight: "scrollHeight", lazy: "lazy", rows: "rows", minBufferPx: "minBufferPx", maxBufferPx: "maxBufferPx", delay: "delay", trackBy: "trackBy", totalRecords: "totalRecords", first: "first", cache: "cache" }, outputs: { onLazyLoad: "onLazyLoad" }, queries: [{ propertyName: "header", first: true, predicate: Header, descendants: true }, { propertyName: "footer", first: true, predicate: Footer, descendants: true }, { propertyName: "templates", predicate: PrimeTemplate }], viewQueries: [{ propertyName: "viewport", first: true, predicate: CdkVirtualScrollViewport, descendants: true }], ngImport: i0, template: `
<div [ngClass]="'p-virtualscroller p-component'" [ngStyle]="style" [class]="styleClass">
<div class="p-virtualscroller-header" *ngIf="header || headerTemplate">
<ng-content select="p-header"></ng-content>
<ng-container *ngTemplateOutlet="headerTemplate"></ng-container>
</div>
<div #content class="p-virtualscroller-content">
<div class="p-virtualscroller-list">
<cdk-virtual-scroll-viewport #viewport [ngStyle]="{'height': scrollHeight}" tabindex="0" [itemSize]="itemSize" [minBufferPx]="minBufferPx" [maxBufferPx]="maxBufferPx" (scrolledIndexChange)="onScrollIndexChange($event)">
<ng-container *cdkVirtualFor="let item of value; trackBy: trackBy; let i = index; let c = count; let f = first; let l = last; let e = even; let o = odd;">
<div [ngStyle]="{'height': itemSize + 'px'}" class="p-virtualscroller-item">
<ng-container *ngTemplateOutlet="item ? itemTemplate : loadingItemTemplate; context: {$implicit: item, index: i, count: c, first: f, last: l, even: e, odd: o}"></ng-container>
</div>
</ng-container>
</cdk-virtual-scroll-viewport>
</div>
</div>
<div class="p-virtualscroller-footer" *ngIf="footer || footerTemplate">
<ng-content select="p-footer"></ng-content>
<ng-container *ngTemplateOutlet="footerTemplate"></ng-container>
</div>
</div>
`, isInline: true, styles: ["cdk-virtual-scroll-viewport{outline:0 none}"], components: [{ type: i1.CdkVirtualScrollViewport, selector: "cdk-virtual-scroll-viewport", inputs: ["orientation"], outputs: ["scrolledIndexChange"] }], directives: [{ type: i2.NgClass, selector: "[ngClass]", inputs: ["class", "ngClass"] }, { type: i2.NgStyle, selector: "[ngStyle]", inputs: ["ngStyle"] }, { type: i2.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }, { type: i2.NgTemplateOutlet, selector: "[ngTemplateOutlet]", inputs: ["ngTemplateOutletContext", "ngTemplateOutlet"] }, { type: i1.CdkFixedSizeVirtualScroll, selector: "cdk-virtual-scroll-viewport[itemSize]", inputs: ["itemSize", "minBufferPx", "maxBufferPx"] }, { type: i1.CdkVirtualForOf, selector: "[cdkVirtualFor][cdkVirtualForOf]", inputs: ["cdkVirtualForOf", "cdkVirtualForTrackBy", "cdkVirtualForTemplate", "cdkVirtualForTemplateCacheSize"] }], changeDetection: i0.ChangeDetectionStrategy.Default, encapsulation: i0.ViewEncapsulation.None });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: VirtualScroller, decorators: [{
type: Component,
args: [{
selector: 'p-virtualScroller',
template: `
<div [ngClass]="'p-virtualscroller p-component'" [ngStyle]="style" [class]="styleClass">
<div class="p-virtualscroller-header" *ngIf="header || headerTemplate">
<ng-content select="p-header"></ng-content>
<ng-container *ngTemplateOutlet="headerTemplate"></ng-container>
</div>
<div #content class="p-virtualscroller-content">
<div class="p-virtualscroller-list">
<cdk-virtual-scroll-viewport #viewport [ngStyle]="{'height': scrollHeight}" tabindex="0" [itemSize]="itemSize" [minBufferPx]="minBufferPx" [maxBufferPx]="maxBufferPx" (scrolledIndexChange)="onScrollIndexChange($event)">
<ng-container *cdkVirtualFor="let item of value; trackBy: trackBy; let i = index; let c = count; let f = first; let l = last; let e = even; let o = odd;">
<div [ngStyle]="{'height': itemSize + 'px'}" class="p-virtualscroller-item">
<ng-container *ngTemplateOutlet="item ? itemTemplate : loadingItemTemplate; context: {$implicit: item, index: i, count: c, first: f, last: l, even: e, odd: o}"></ng-container>
</div>
</ng-container>
</cdk-virtual-scroll-viewport>
</div>
</div>
<div class="p-virtualscroller-footer" *ngIf="footer || footerTemplate">
<ng-content select="p-footer"></ng-content>
<ng-container *ngTemplateOutlet="footerTemplate"></ng-container>
</div>
</div>
`,
changeDetection: ChangeDetectionStrategy.Default,
encapsulation: ViewEncapsulation.None,
styleUrls: ['./virtualscroller.css']
}]
}], ctorParameters: function () { return [{ type: i0.ElementRef }]; }, propDecorators: { value: [{
type: Input
}], itemSize: [{
type: Input
}], style: [{
type: Input
}], styleClass: [{
type: Input
}], scrollHeight: [{
type: Input
}], lazy: [{
type: Input
}], rows: [{
type: Input
}], minBufferPx: [{
type: Input
}], maxBufferPx: [{
type: Input
}], delay: [{
type: Input
}], trackBy: [{
type: Input
}], header: [{
type: ContentChild,
args: [Header]
}], footer: [{
type: ContentChild,
args: [Footer]
}], templates: [{
type: ContentChildren,
args: [PrimeTemplate]
}], viewport: [{
type: ViewChild,
args: [CdkVirtualScrollViewport]
}], onLazyLoad: [{
type: Output
}], totalRecords: [{
type: Input
}], first: [{
type: Input
}], cache: [{
type: Input
}] } });
class VirtualScrollerModule {
}
VirtualScrollerModule.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: VirtualScrollerModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule });
VirtualScrollerModule.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: VirtualScrollerModule, declarations: [VirtualScroller], imports: [CommonModule, ScrollingModule], exports: [VirtualScroller, SharedModule, ScrollingModule] });
VirtualScrollerModule.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: VirtualScrollerModule, imports: [[CommonModule, ScrollingModule], SharedModule, ScrollingModule] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "12.0.4", ngImport: i0, type: VirtualScrollerModule, decorators: [{
type: NgModule,
args: [{
imports: [CommonModule, ScrollingModule],
exports: [VirtualScroller, SharedModule, ScrollingModule],
declarations: [VirtualScroller]
}]
}] });
/**
* Generated bundle index. Do not edit.
*/
export { VirtualScroller, VirtualScrollerModule };
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