primeng
Version:
[](https://opensource.org/licenses/MIT) [](https://gitter.im/primefaces/primeng?ut
85 lines • 3.54 kB
JavaScript
;
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 domhandler_1 = require("../dom/domhandler");
var DeferredLoader = /** @class */ (function () {
function DeferredLoader(el, domHandler, renderer, viewContainer) {
this.el = el;
this.domHandler = domHandler;
this.renderer = renderer;
this.viewContainer = viewContainer;
this.onLoad = new core_1.EventEmitter();
}
DeferredLoader.prototype.ngAfterViewInit = function () {
var _this = this;
if (this.shouldLoad()) {
this.load();
}
this.documentScrollListener = this.renderer.listen('window', 'scroll', function () {
if (_this.shouldLoad()) {
_this.load();
_this.documentScrollListener();
_this.documentScrollListener = null;
}
});
};
DeferredLoader.prototype.shouldLoad = function () {
var rect = this.el.nativeElement.getBoundingClientRect();
var docElement = document.documentElement;
var scrollTop = (window.pageYOffset || document.documentElement.scrollTop);
var winHeight = docElement.clientHeight;
return (winHeight >= rect.top);
};
DeferredLoader.prototype.load = function () {
this.view = this.viewContainer.createEmbeddedView(this.template);
this.onLoad.emit();
};
DeferredLoader.prototype.ngOnDestroy = function () {
this.view = null;
if (this.documentScrollListener) {
this.documentScrollListener();
}
};
__decorate([
core_1.Output(),
__metadata("design:type", core_1.EventEmitter)
], DeferredLoader.prototype, "onLoad", void 0);
__decorate([
core_1.ContentChild(core_1.TemplateRef),
__metadata("design:type", core_1.TemplateRef)
], DeferredLoader.prototype, "template", void 0);
DeferredLoader = __decorate([
core_1.Directive({
selector: '[pDefer]',
host: {},
providers: [domhandler_1.DomHandler]
}),
__metadata("design:paramtypes", [core_1.ElementRef, domhandler_1.DomHandler, core_1.Renderer2, core_1.ViewContainerRef])
], DeferredLoader);
return DeferredLoader;
}());
exports.DeferredLoader = DeferredLoader;
var DeferModule = /** @class */ (function () {
function DeferModule() {
}
DeferModule = __decorate([
core_1.NgModule({
imports: [common_1.CommonModule],
exports: [DeferredLoader],
declarations: [DeferredLoader]
})
], DeferModule);
return DeferModule;
}());
exports.DeferModule = DeferModule;
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