primeng
Version:
[](https://opensource.org/licenses/MIT) [](https://gitter.im/primefaces/primeng?ut
192 lines • 8.98 kB
JavaScript
"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
Object.defineProperty(exports, "__esModule", { value: true });
var core_1 = require("@angular/core");
var common_1 = require("@angular/common");
var shared_1 = require("../common/shared");
var scrolling_1 = require("@angular/cdk/scrolling");
var objectutils_1 = require("../utils/objectutils");
var VirtualScroller = /** @class */ (function () {
function VirtualScroller(el, objectUtils) {
this.el = el;
this.objectUtils = objectUtils;
this.cache = true;
this.first = 0;
this.trackBy = function (index, item) { return item; };
this.onLazyLoad = new core_1.EventEmitter();
this._totalRecords = 0;
this.lazyValue = [];
this.page = 0;
}
Object.defineProperty(VirtualScroller.prototype, "totalRecords", {
get: function () {
return this._totalRecords;
},
set: function (val) {
this._totalRecords = val;
this.lazyValue = Array.from({ length: this._totalRecords });
this.onLazyLoad.emit(this.createLazyLoadMetadata());
this.first = 0;
this.scrollTo(0);
},
enumerable: true,
configurable: true
});
Object.defineProperty(VirtualScroller.prototype, "value", {
get: function () {
return this.lazy ? this.lazyValue : this._value;
},
set: function (val) {
if (this.lazy) {
if (val) {
var arr = this.cache ? this.lazyValue.slice() : Array.from({ length: this._totalRecords });
for (var i = this.first, j = 0; i < (this.first + this.rows); i++, j++) {
arr[i] = val[j];
}
this.lazyValue = arr;
}
}
else {
this._value = val;
}
},
enumerable: true,
configurable: true
});
VirtualScroller.prototype.ngAfterContentInit = function () {
var _this = this;
this.templates.forEach(function (item) {
switch (item.getType()) {
case 'item':
_this.itemTemplate = item.template;
break;
case 'loadingItem':
_this.loadingItemTemplate = item.template;
break;
default:
_this.itemTemplate = item.template;
break;
}
});
};
VirtualScroller.prototype.onScrollIndexChange = function (index) {
var p = Math.floor(index / this.rows);
if (p !== this.page) {
this.page = p;
this.first = this.page * this.rows;
this.onLazyLoad.emit(this.createLazyLoadMetadata());
}
};
VirtualScroller.prototype.createLazyLoadMetadata = function () {
return {
first: this.first,
rows: this.rows
};
};
VirtualScroller.prototype.getBlockableElement = function () {
return this.el.nativeElement.children[0];
};
VirtualScroller.prototype.scrollTo = function (index) {
if (this.viewPortViewChild && this.viewPortViewChild['elementRef'] && this.viewPortViewChild['elementRef'].nativeElement) {
this.viewPortViewChild['elementRef'].nativeElement.scrollTop = index * this.itemSize;
}
};
__decorate([
core_1.Input(),
__metadata("design:type", Number)
], VirtualScroller.prototype, "itemSize", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Object)
], VirtualScroller.prototype, "style", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", String)
], VirtualScroller.prototype, "styleClass", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Object)
], VirtualScroller.prototype, "scrollHeight", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Boolean)
], VirtualScroller.prototype, "lazy", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Boolean)
], VirtualScroller.prototype, "cache", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Number)
], VirtualScroller.prototype, "rows", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Number)
], VirtualScroller.prototype, "first", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Function)
], VirtualScroller.prototype, "trackBy", void 0);
__decorate([
core_1.ContentChild(shared_1.Header),
__metadata("design:type", Object)
], VirtualScroller.prototype, "header", void 0);
__decorate([
core_1.ContentChild(shared_1.Footer),
__metadata("design:type", Object)
], VirtualScroller.prototype, "footer", void 0);
__decorate([
core_1.ContentChildren(shared_1.PrimeTemplate),
__metadata("design:type", core_1.QueryList)
], VirtualScroller.prototype, "templates", void 0);
__decorate([
core_1.ViewChild('viewport'),
__metadata("design:type", core_1.ElementRef)
], VirtualScroller.prototype, "viewPortViewChild", void 0);
__decorate([
core_1.Output(),
__metadata("design:type", core_1.EventEmitter)
], VirtualScroller.prototype, "onLazyLoad", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Number),
__metadata("design:paramtypes", [Number])
], VirtualScroller.prototype, "totalRecords", null);
__decorate([
core_1.Input(),
__metadata("design:type", Array),
__metadata("design:paramtypes", [Array])
], VirtualScroller.prototype, "value", null);
VirtualScroller = __decorate([
core_1.Component({
selector: 'p-virtualScroller',
template: "\n <div [ngClass]=\"'ui-virtualscroller ui-widget'\" [ngStyle]=\"style\" [class]=\"styleClass\">\n <div class=\"ui-virtualscroller-header ui-widget-header ui-corner-top\" *ngIf=\"header\">\n <ng-content select=\"p-header\"></ng-content>\n </div>\n <div #content class=\"ui-virtualscroller-content ui-widget-content\">\n <ul class=\"ui-virtualscroller-list\">\n <cdk-virtual-scroll-viewport #viewport [ngStyle]=\"{'height': scrollHeight}\" [itemSize]=\"itemSize\" (scrolledIndexChange)=\"onScrollIndexChange($event)\">\n <ng-container *cdkVirtualFor=\"let item of value; trackBy: trackBy; let i = index; let c = count; let f = first; let l = last; let e = even; let o = odd; \">\n <li [ngStyle]=\"{'height': itemSize + 'px'}\">\n <ng-container *ngTemplateOutlet=\"item ? itemTemplate : loadingItemTemplate; context: {$implicit: item, index: i, count: c, first: f, last: l, even: e, odd: o}\"></ng-container>\n </li>\n </ng-container>\n </cdk-virtual-scroll-viewport>\n </ul>\n </div>\n <div class=\"ui-virtualscroller-footer ui-widget-header ui-corner-bottom\" *ngIf=\"footer\">\n <ng-content select=\"p-footer\"></ng-content>\n </div>\n </div>\n ",
providers: [objectutils_1.ObjectUtils]
}),
__metadata("design:paramtypes", [core_1.ElementRef, objectutils_1.ObjectUtils])
], VirtualScroller);
return VirtualScroller;
}());
exports.VirtualScroller = VirtualScroller;
var VirtualScrollerModule = /** @class */ (function () {
function VirtualScrollerModule() {
}
VirtualScrollerModule = __decorate([
core_1.NgModule({
imports: [common_1.CommonModule, scrolling_1.ScrollingModule],
exports: [VirtualScroller, shared_1.SharedModule, scrolling_1.ScrollingModule],
declarations: [VirtualScroller]
})
], VirtualScrollerModule);
return VirtualScrollerModule;
}());
exports.VirtualScrollerModule = VirtualScrollerModule;
//# sourceMappingURL=virtualscroller.js.map