primeng
Version:
[](https://opensource.org/licenses/MIT) [](https://gitter.im/primefaces/primeng?ut
221 lines • 9.54 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 domhandler_1 = require("../dom/domhandler");
var DataScroller = /** @class */ (function () {
function DataScroller(el, renderer, domHandler, zone) {
this.el = el;
this.renderer = renderer;
this.domHandler = domHandler;
this.zone = zone;
this.buffer = 0.9;
this.trackBy = function (index, item) { return item; };
this.onLazyLoad = new core_1.EventEmitter();
this.dataToRender = [];
this.first = 0;
this.page = 0;
}
DataScroller.prototype.ngOnInit = function () {
this.load();
};
DataScroller.prototype.ngAfterViewInit = function () {
var _this = this;
if (this.loader) {
this.loaderClickListener = this.renderer.listen(this.loader, 'click', function () {
_this.load();
});
}
else {
this.bindScrollListener();
}
};
DataScroller.prototype.ngAfterContentInit = function () {
var _this = this;
this.templates.forEach(function (item) {
switch (item.getType()) {
case 'item':
_this.itemTemplate = item.template;
break;
default:
_this.itemTemplate = item.template;
break;
}
});
};
DataScroller.prototype.load = function () {
if (this.lazy) {
this.onLazyLoad.emit({
first: this.page * this.rows,
rows: this.rows
});
}
this.page = this.page + 1;
};
DataScroller.prototype.shouldLoad = function () {
if (this.lazy)
return (this.rows * this.page < this.totalRecords);
else
return this.value && this.value.length && (this.rows * this.page < this.value.length);
};
DataScroller.prototype.reset = function () {
this.page = 0;
};
DataScroller.prototype.isEmpty = function () {
return !this.value || (this.value.length == 0);
};
DataScroller.prototype.bindScrollListener = function () {
var _this = this;
this.zone.runOutsideAngular(function () {
if (_this.inline) {
_this.inlineScrollListener = _this.onInlineScroll.bind(_this);
_this.contentViewChild.nativeElement.addEventListener('scroll', _this.inlineScrollListener);
}
else {
_this.windowScrollListener = _this.onWindowScroll.bind(_this);
window.addEventListener('scroll', _this.windowScrollListener);
}
});
};
DataScroller.prototype.unbindScrollListener = function () {
if (this.inlineScrollListener) {
this.contentViewChild.nativeElement.removeEventListener('scroll', this.inlineScrollListener);
}
if (this.windowScrollListener) {
window.removeEventListener('scroll', this.windowScrollListener);
}
if (this.loaderClickListener) {
this.loaderClickListener();
this.loaderClickListener = null;
}
};
DataScroller.prototype.onInlineScroll = function () {
var _this = this;
var scrollTop = this.contentViewChild.nativeElement.scrollTop;
var scrollHeight = this.contentViewChild.nativeElement.scrollHeight;
var viewportHeight = this.contentViewChild.nativeElement.clientHeight;
if ((scrollTop >= ((scrollHeight * this.buffer) - (viewportHeight)))) {
if (this.shouldLoad()) {
this.zone.run(function () {
_this.load();
});
}
}
};
DataScroller.prototype.onWindowScroll = function () {
var _this = this;
var docBody = document.body;
var docElement = document.documentElement;
var scrollTop = (window.pageYOffset || document.documentElement.scrollTop);
var winHeight = docElement.clientHeight;
var docHeight = Math.max(docBody.scrollHeight, docBody.offsetHeight, winHeight, docElement.scrollHeight, docElement.offsetHeight);
if (scrollTop >= ((docHeight * this.buffer) - winHeight)) {
if (this.shouldLoad()) {
this.zone.run(function () {
_this.load();
});
}
}
};
DataScroller.prototype.ngOnDestroy = function () {
this.unbindScrollListener();
};
__decorate([
core_1.Input(),
__metadata("design:type", Array)
], DataScroller.prototype, "value", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Number)
], DataScroller.prototype, "rows", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Boolean)
], DataScroller.prototype, "lazy", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Object)
], DataScroller.prototype, "style", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", String)
], DataScroller.prototype, "styleClass", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Number)
], DataScroller.prototype, "buffer", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Boolean)
], DataScroller.prototype, "inline", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Object)
], DataScroller.prototype, "scrollHeight", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Object)
], DataScroller.prototype, "loader", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Number)
], DataScroller.prototype, "totalRecords", void 0);
__decorate([
core_1.Input(),
__metadata("design:type", Function)
], DataScroller.prototype, "trackBy", void 0);
__decorate([
core_1.ContentChild(shared_1.Header),
__metadata("design:type", Object)
], DataScroller.prototype, "header", void 0);
__decorate([
core_1.ContentChild(shared_1.Footer),
__metadata("design:type", Object)
], DataScroller.prototype, "footer", void 0);
__decorate([
core_1.ContentChildren(shared_1.PrimeTemplate),
__metadata("design:type", core_1.QueryList)
], DataScroller.prototype, "templates", void 0);
__decorate([
core_1.ViewChild('content'),
__metadata("design:type", core_1.ElementRef)
], DataScroller.prototype, "contentViewChild", void 0);
__decorate([
core_1.Output(),
__metadata("design:type", core_1.EventEmitter)
], DataScroller.prototype, "onLazyLoad", void 0);
DataScroller = __decorate([
core_1.Component({
selector: 'p-dataScroller',
template: "\n <div [ngClass]=\"{'ui-datascroller ui-widget': true, 'ui-datascroller-inline': inline}\" [ngStyle]=\"style\" [class]=\"styleClass\">\n <div class=\"ui-datascroller-header ui-widget-header ui-corner-top\" *ngIf=\"header\">\n <ng-content select=\"p-header\"></ng-content>\n </div>\n <div #content class=\"ui-datascroller-content ui-widget-content\" [ngStyle]=\"{'max-height': scrollHeight}\">\n <ul class=\"ui-datascroller-list\">\n <li *ngFor=\"let item of value | slice:first:(first + (page * rows)); trackBy: trackBy; let i = index\">\n <ng-container *ngTemplateOutlet=\"itemTemplate; context: {$implicit: item, index: i}\"></ng-container>\n </li>\n </ul>\n </div>\n <div class=\"ui-datascroller-footer ui-widget-header ui-corner-bottom\" *ngIf=\"footer\">\n <ng-content select=\"p-footer\"></ng-content>\n </div>\n </div>\n ",
providers: [domhandler_1.DomHandler]
}),
__metadata("design:paramtypes", [core_1.ElementRef, core_1.Renderer2, domhandler_1.DomHandler, core_1.NgZone])
], DataScroller);
return DataScroller;
}());
exports.DataScroller = DataScroller;
var DataScrollerModule = /** @class */ (function () {
function DataScrollerModule() {
}
DataScrollerModule = __decorate([
core_1.NgModule({
imports: [common_1.CommonModule],
exports: [DataScroller, shared_1.SharedModule],
declarations: [DataScroller]
})
], DataScrollerModule);
return DataScrollerModule;
}());
exports.DataScrollerModule = DataScrollerModule;
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