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delegate.ts
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delegate.ts
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import {
Cursor,
Dict,
ElementBuilder,
Environment,
RenderResult,
Option,
} from '@glimmer/interfaces';
import { serializeBuilder } from '@glimmer/node';
import { UpdatableRootReference } from '@glimmer/reference';
import createHTMLDocument from '@simple-dom/document';
import { SimpleDocument, SimpleElement, SimpleNode } from '@simple-dom/interface';
import { ComponentKind } from '../../components';
import { replaceHTML, toInnerHTML } from '../../dom/simple-utils';
import { UserHelper } from '../../helpers';
import { TestModifierConstructor } from '../../modifiers';
import RenderDelegate from '../../render-delegate';
import { JitDelegateContext, JitTestDelegateContext } from '../jit/delegate';
import { registerComponent, registerHelper, registerModifier } from '../jit/register';
import { TestJitRegistry } from '../jit/registry';
import { renderTemplate } from '../jit/render';
import TestJitRuntimeResolver from '../jit/resolver';
import { debugRehydration, DebugRehydrationBuilder } from './builder';
export interface RehydrationStats {
clearedNodes: SimpleNode[];
}
export class RehydrationDelegate implements RenderDelegate {
static readonly isEager = false;
static readonly style = 'rehydration';
public clientEnv: JitTestDelegateContext;
public serverEnv: JitTestDelegateContext;
private clientResolver: TestJitRuntimeResolver;
private serverResolver: TestJitRuntimeResolver;
private clientRegistry: TestJitRegistry;
private serverRegistry: TestJitRegistry;
public clientDoc: SimpleDocument;
public serverDoc: SimpleDocument;
public rehydrationStats!: RehydrationStats;
private self: Option<UpdatableRootReference> = null;
constructor() {
this.clientDoc = document as SimpleDocument;
this.clientResolver = new TestJitRuntimeResolver();
this.clientRegistry = this.clientResolver.registry;
this.clientEnv = JitDelegateContext(this.clientDoc, this.clientResolver, this.clientRegistry);
this.serverDoc = createHTMLDocument();
this.serverResolver = new TestJitRuntimeResolver();
this.serverRegistry = this.serverResolver.registry;
this.serverEnv = JitDelegateContext(this.serverDoc, this.serverResolver, this.serverRegistry);
}
getInitialElement(): SimpleElement {
return this.clientDoc.createElement('div');
}
createElement(tagName: string): SimpleElement {
return this.clientDoc.createElement(tagName);
}
getElementBuilder(env: Environment, cursor: Cursor): ElementBuilder {
if (cursor.element instanceof Node) {
return debugRehydration(env, cursor);
}
return serializeBuilder(env, cursor);
}
renderServerSide(
template: string,
context: Dict<unknown>,
takeSnapshot: () => void,
element: SimpleElement | undefined = undefined
): string {
element = element || this.serverDoc.createElement('div');
let cursor = { element, nextSibling: null };
// Emulate server-side render
renderTemplate(
template,
this.serverEnv,
this.getSelf(context),
this.getElementBuilder(this.serverEnv.runtime.env, cursor)
);
takeSnapshot();
return this.serialize(element);
}
getSelf(context: unknown): UpdatableRootReference {
if (!this.self) {
this.self = new UpdatableRootReference(context);
}
return this.self;
}
serialize(element: SimpleElement): string {
return toInnerHTML(element);
}
renderClientSide(template: string, context: Dict<unknown>, element: SimpleElement): RenderResult {
let env = this.clientEnv.runtime.env;
this.self = null;
// Client-side rehydration
let cursor = { element, nextSibling: null };
let builder = this.getElementBuilder(env, cursor) as DebugRehydrationBuilder;
let result = renderTemplate(template, this.clientEnv, this.getSelf(context), builder);
this.rehydrationStats = {
clearedNodes: builder['clearedNodes'],
};
return result;
}
renderTemplate(
template: string,
context: Dict<unknown>,
element: SimpleElement,
snapshot: () => void
): RenderResult {
let serialized = this.renderServerSide(template, context, snapshot);
replaceHTML(element, serialized);
qunitFixture().appendChild(element);
return this.renderClientSide(template, context, element);
}
registerComponent(type: ComponentKind, _testType: string, name: string, layout: string): void {
registerComponent(this.clientRegistry, type, name, layout);
registerComponent(this.serverRegistry, type, name, layout);
}
registerHelper(name: string, helper: UserHelper): void {
registerHelper(this.clientRegistry, name, helper);
registerHelper(this.serverRegistry, name, helper);
}
registerModifier(name: string, ModifierClass: TestModifierConstructor): void {
registerModifier(this.clientRegistry, name, ModifierClass);
registerModifier(this.serverRegistry, name, ModifierClass);
}
}
export function qunitFixture(): SimpleElement {
return document.getElementById('qunit-fixture') as SimpleElement;
}