redoc/lib/components/JsonSchema/json-schema-lazy.ts
2016-08-22 12:12:13 +03:00

96 lines
2.9 KiB
TypeScript

'use strict';
import { Component, ElementRef, ViewContainerRef, OnDestroy, Input,
AfterViewInit, ComponentFactoryResolver, Renderer } from '@angular/core';
import { JsonSchema } from './json-schema';
import { OptionsService } from '../../services/options.service';
import { SpecManager } from '../../utils/SpecManager';
var cache = {};
@Component({
selector: 'json-schema-lazy',
entryComponents: [ JsonSchema ],
template: ''
})
export class JsonSchemaLazy implements OnDestroy, AfterViewInit {
@Input() pointer: string;
@Input() auto: boolean;
@Input() isRequestSchema: boolean;
@Input() final: boolean = false;
@Input() nestOdd: boolean;
@Input() childFor: string;
@Input() isArray: boolean;
disableLazy: boolean = false;
loaded: boolean = false;
constructor(private specMgr:SpecManager, private location:ViewContainerRef, private elementRef:ElementRef,
private resolver:ComponentFactoryResolver, private optionsService:OptionsService, private _renderer: Renderer) {
this.disableLazy = this.optionsService.options.disableLazySchemas;
}
normalizePointer() {
let schema = this.specMgr.byPointer(this.pointer);
return schema && schema.$ref || this.pointer;
}
_loadAfterSelf() {
var componentFactory = this.resolver.resolveComponentFactory(JsonSchema);
let contextInjector = this.location.parentInjector;
let compRef = this.location.createComponent(componentFactory, null, contextInjector, null);
this.initComponent(compRef.instance);
this._renderer.setElementAttribute(compRef.location.nativeElement, 'class', this.location.element.nativeElement.className);
compRef.changeDetectorRef.detectChanges();
this.loaded = true;
return compRef;
}
load() {
if (this.optionsService.options.disableLazySchemas) return;
if (this.loaded) return;
if (this.pointer) {
this._loadAfterSelf();
}
}
// cache JsonSchema view
loadCached() {
this.pointer = this.normalizePointer();
if (cache[this.pointer]) {
let compRef = cache[this.pointer];
setTimeout( ()=> {
let $element = compRef.location.nativeElement;
// skip caching view with descendant schemas
// as it needs attached controller
if (!this.disableLazy && (compRef.instance.hasDescendants || compRef.instance._hasSubSchemas)) {
this._loadAfterSelf();
return;
}
insertAfter($element.cloneNode(true), this.elementRef.nativeElement);
this.loaded = true;
});
} else {
cache[this.pointer] = this._loadAfterSelf();
}
}
initComponent(instance:JsonSchema) {
Object.assign(instance, this);
}
ngAfterViewInit() {
if (!this.auto && !this.disableLazy) return;
this.loadCached();
}
ngOnDestroy() {
// clear cache
cache = {};
}
}
function insertAfter(newNode, referenceNode) {
referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
}