зеркало из https://github.com/github/jtml.git
move all functions to their own files
Co-authored-by: Kristján Oddsson <koddsson@gmail.com>
This commit is contained in:
Родитель
2237f9047b
Коммит
7455cb0486
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@ -0,0 +1,10 @@
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import {NodeTemplatePart} from '@github/template-parts'
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import type {TemplatePart} from '@github/template-parts'
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export function processDocumentFragment(part: TemplatePart, value: unknown): boolean {
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if (value instanceof DocumentFragment && part instanceof NodeTemplatePart) {
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if (value.childNodes.length) part.replace(...value.childNodes)
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return true
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}
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return false
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}
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111
src/html.ts
111
src/html.ts
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@ -1,111 +1,6 @@
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import {
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TemplateInstance,
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NodeTemplatePart,
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createProcessor,
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processPropertyIdentity,
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processBooleanAttribute
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} from '@github/template-parts'
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import {processDirective} from './directive.js'
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import {processEvent} from './events.js'
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import type {TemplatePart, TemplateTypeInit} from '@github/template-parts'
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import {processor} from './processor.js'
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import {TemplateResult} from './template-result.js'
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function processSubTemplate(part: TemplatePart, value: unknown): boolean {
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if (value instanceof TemplateResult && part instanceof NodeTemplatePart) {
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value.renderInto(part)
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return true
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}
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return false
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}
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function processDocumentFragment(part: TemplatePart, value: unknown): boolean {
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if (value instanceof DocumentFragment && part instanceof NodeTemplatePart) {
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if (value.childNodes.length) part.replace(...value.childNodes)
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return true
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}
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return false
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}
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function isIterable(value: unknown): value is Iterable<unknown> {
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return typeof value === 'object' && Symbol.iterator in ((value as unknown) as Record<symbol, unknown>)
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}
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function processIterable(part: TemplatePart, value: unknown): boolean {
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if (!isIterable(value)) return false
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if (part instanceof NodeTemplatePart) {
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const nodes = []
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for (const item of value) {
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if (item instanceof TemplateResult) {
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const fragment = document.createDocumentFragment()
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item.renderInto(fragment)
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nodes.push(...fragment.childNodes)
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} else if (item instanceof DocumentFragment) {
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nodes.push(...item.childNodes)
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} else {
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nodes.push(String(item))
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}
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}
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if (nodes.length) part.replace(...nodes)
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return true
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} else {
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part.value = Array.from(value).join(' ')
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return true
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}
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}
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export function processPart(part: TemplatePart, value: unknown): void {
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processDirective(part, value) ||
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processBooleanAttribute(part, value) ||
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processEvent(part, value) ||
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processSubTemplate(part, value) ||
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processDocumentFragment(part, value) ||
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processIterable(part, value) ||
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processPropertyIdentity(part, value)
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}
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const templates = new WeakMap<TemplateStringsArray, HTMLTemplateElement>()
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const renderedTemplates = new WeakMap<Node | NodeTemplatePart, HTMLTemplateElement>()
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const renderedTemplateInstances = new WeakMap<Node | NodeTemplatePart, TemplateInstance>()
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export class TemplateResult {
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constructor(
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public readonly strings: TemplateStringsArray,
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public readonly values: unknown[],
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public readonly processor: TemplateTypeInit
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) {}
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get template(): HTMLTemplateElement {
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if (templates.has(this.strings)) {
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return templates.get(this.strings)!
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} else {
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const template = document.createElement('template')
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const end = this.strings.length - 1
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template.innerHTML = this.strings.reduce((str, cur, i) => str + cur + (i < end ? `{{ ${i} }}` : ''), '')
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templates.set(this.strings, template)
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return template
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}
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}
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renderInto(element: Node | NodeTemplatePart): void {
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const template = this.template
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if (renderedTemplates.get(element) !== template) {
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renderedTemplates.set(element, template)
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const instance = new TemplateInstance(template, this.values, this.processor)
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renderedTemplateInstances.set(element, instance)
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if (element instanceof NodeTemplatePart) {
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element.replace(...instance.children)
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} else {
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element.appendChild(instance)
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}
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return
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}
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renderedTemplateInstances.get(element)!.update((this.values as unknown) as Record<string, unknown>)
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}
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}
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const defaultProcessor = createProcessor(processPart)
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export function html(strings: TemplateStringsArray, ...values: unknown[]): TemplateResult {
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return new TemplateResult(strings, values, defaultProcessor)
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}
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export function render(result: TemplateResult, element: Node | NodeTemplatePart): void {
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result.renderInto(element)
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return new TemplateResult(strings, values, processor)
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}
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|
|
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@ -1,4 +1,7 @@
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export {TemplateResult, html, render} from './html.js'
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export {TemplateResult} from './template-result.js'
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export {render} from './render.js'
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export {processor} from './processor.js'
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export {html} from './html.js'
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export {isDirective, directive} from './directive.js'
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export {until} from './until.js'
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export {unsafeHTML} from './unsafe-html.js'
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@ -0,0 +1,30 @@
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import {TemplateResult} from './template-result.js'
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import {NodeTemplatePart} from '@github/template-parts'
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import type {TemplatePart} from '@github/template-parts'
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function isIterable(value: unknown): value is Iterable<unknown> {
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return typeof value === 'object' && Symbol.iterator in ((value as unknown) as Record<symbol, unknown>)
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}
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export function processIterable(part: TemplatePart, value: unknown): boolean {
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if (!isIterable(value)) return false
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if (part instanceof NodeTemplatePart) {
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const nodes = []
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for (const item of value) {
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if (item instanceof TemplateResult) {
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const fragment = document.createDocumentFragment()
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item.renderInto(fragment)
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nodes.push(...fragment.childNodes)
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} else if (item instanceof DocumentFragment) {
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nodes.push(...item.childNodes)
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} else {
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nodes.push(String(item))
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}
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}
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if (nodes.length) part.replace(...nodes)
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return true
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} else {
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part.value = Array.from(value).join(' ')
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return true
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}
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}
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@ -0,0 +1,20 @@
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import {createProcessor, processPropertyIdentity, processBooleanAttribute} from '@github/template-parts'
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import type {TemplatePart} from '@github/template-parts'
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import {processDirective} from './directive.js'
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import {processEvent} from './events.js'
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import {processIterable} from './iterable.js'
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import {processDocumentFragment} from './document-fragment.js'
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import {processSubTemplate} from './sub-template.js'
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export function processPart(part: TemplatePart, value: unknown): void {
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processDirective(part, value) ||
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processBooleanAttribute(part, value) ||
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processEvent(part, value) ||
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processSubTemplate(part, value) ||
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processDocumentFragment(part, value) ||
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processIterable(part, value) ||
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processPropertyIdentity(part, value)
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}
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export const processor = createProcessor(processPart)
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@ -0,0 +1,7 @@
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import type {NodeTemplatePart} from '@github/template-parts'
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import {TemplateResult} from './template-result.js'
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export function render(result: TemplateResult, element: Node | NodeTemplatePart): void {
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result.renderInto(element)
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}
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@ -0,0 +1,12 @@
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import {NodeTemplatePart} from '@github/template-parts'
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import type {TemplatePart} from '@github/template-parts'
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import {TemplateResult} from './template-result.js'
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export function processSubTemplate(part: TemplatePart, value: unknown): boolean {
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if (value instanceof TemplateResult && part instanceof NodeTemplatePart) {
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value.renderInto(part)
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return true
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}
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return false
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}
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@ -0,0 +1,41 @@
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import {TemplateInstance, NodeTemplatePart} from '@github/template-parts'
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import type {TemplateTypeInit} from '@github/template-parts'
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const templates = new WeakMap<TemplateStringsArray, HTMLTemplateElement>()
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const renderedTemplates = new WeakMap<Node | NodeTemplatePart, HTMLTemplateElement>()
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const renderedTemplateInstances = new WeakMap<Node | NodeTemplatePart, TemplateInstance>()
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export class TemplateResult {
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constructor(
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public readonly strings: TemplateStringsArray,
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public readonly values: unknown[],
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public readonly processor: TemplateTypeInit
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) {}
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get template(): HTMLTemplateElement {
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if (templates.has(this.strings)) {
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return templates.get(this.strings)!
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} else {
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const template = document.createElement('template')
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const end = this.strings.length - 1
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template.innerHTML = this.strings.reduce((str, cur, i) => str + cur + (i < end ? `{{ ${i} }}` : ''), '')
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templates.set(this.strings, template)
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return template
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}
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}
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renderInto(element: Node | NodeTemplatePart): void {
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const template = this.template
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if (renderedTemplates.get(element) !== template) {
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renderedTemplates.set(element, template)
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const instance = new TemplateInstance(template, this.values, this.processor)
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renderedTemplateInstances.set(element, instance)
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if (element instanceof NodeTemplatePart) {
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element.replace(...instance.children)
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} else {
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element.appendChild(instance)
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}
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return
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}
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renderedTemplateInstances.get(element)!.update((this.values as unknown) as Record<string, unknown>)
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}
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}
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@ -1,7 +1,8 @@
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import {processPart} from './html.js'
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import {directive} from './directive.js'
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import type {TemplatePart} from '@github/template-parts'
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import {processPart} from './processor.js'
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import {directive} from './directive.js'
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const untils: WeakMap<TemplatePart, {i: number}> = new WeakMap()
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export const until = directive((...promises: unknown[]) => (part: TemplatePart) => {
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if (!untils.has(part)) untils.set(part, {i: promises.length})
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251
test/html.ts
251
test/html.ts
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@ -1,4 +1,4 @@
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import {html, render, directive} from '../lib/index.js'
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import {html} from '../lib/index.js'
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describe('html', () => {
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it('creates new TemplateResults with each call', () => {
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@ -9,252 +9,3 @@ describe('html', () => {
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expect(other()).to.not.equal(other())
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})
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})
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describe('render', () => {
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let surface
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beforeEach(() => {
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surface = document.createElement('section')
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})
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it('calls `createCallback` on first render', () => {
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const main = (x = null) => html`<div class="${x}"></div>`
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let called = false
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const instance = main()
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instance.processor = {
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processCallback() {
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throw new Error('Expected processCallback to not be called')
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},
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createCallback() {
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called = true
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}
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}
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instance.renderInto(surface)
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expect(called).to.equal(true)
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})
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it('memoizes by TemplateResult#template, updating old templates with new values', () => {
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const main = (x = null) => html`<div class="${x}"></div>`
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render(main('foo'), surface)
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expect(surface.innerHTML).to.equal('<div class="foo"></div>')
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render(main('bar'), surface)
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expect(surface.innerHTML).to.equal('<div class="bar"></div>')
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})
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describe('nesting', () => {
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it('supports nested html calls', () => {
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const main = child => html`<div>${child}</div>`
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const child = message => html`<span>${message}</span>`
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render(main(child('Hello')), surface)
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expect(surface.innerHTML).to.equal('<div><span>Hello</span></div>')
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})
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it('updates nodes from repeat calls', () => {
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const main = child => html`<div>${child}</div>`
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const child = message => html`<span>${message}</span>`
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render(main(child('Hello')), surface)
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expect(surface.innerHTML).to.equal('<div><span>Hello</span></div>')
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render(main(child('Goodbye')), surface)
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expect(surface.innerHTML).to.equal('<div><span>Goodbye</span></div>')
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})
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it('can nest document fragments and text nodes', () => {
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const main = frag => html`<span>${frag}</span>`
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const fragment = document.createDocumentFragment()
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fragment.append(new Text('Hello World'))
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render(main(fragment), surface)
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expect(surface.innerHTML).to.equal('<span>Hello World</span>')
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fragment.append(document.createTextNode('Hello Universe!'))
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render(main(fragment), surface)
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expect(surface.innerHTML).to.equal('<span>Hello Universe!</span>')
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})
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it('renders DocumentFragments nested in sub templates nested in arrays', () => {
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const sub = () => {
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const frag = document.createDocumentFragment()
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frag.appendChild(document.createElement('div'))
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return html`<span>${frag}</span>`
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}
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const main = () => html`<div>${[sub(), sub()]}</div>`
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render(main(), surface)
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expect(surface.innerHTML).to.contain('<div><span><div></div></span><span><div></div></span></div>')
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})
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})
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describe('iterables', () => {
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it('supports arrays of strings in nodes', () => {
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const main = list => html`<div>${list}</div>`
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render(main(['one', 'two', 'three']), surface)
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expect(surface.innerHTML).to.equal('<div>onetwothree</div>')
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render(main(['four', 'five', 'six']), surface)
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expect(surface.innerHTML).to.equal('<div>fourfivesix</div>')
|
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})
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|
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it('supports iterables of Sub Templates with text nodes', () => {
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const main = list => html`<div>${list}</div>`
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let fragments = ['one', 'two', 'three'].map(text => html`${text}`)
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render(main(fragments), surface)
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expect(surface.innerHTML).to.equal('<div>onetwothree</div>')
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fragments = ['four', 'five', 'six'].map(text => html`${text}`)
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render(main(fragments), surface)
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expect(surface.innerHTML).to.equal('<div>fourfivesix</div>')
|
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})
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|
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it('supports iterables of fragments with text nodes', () => {
|
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const main = list => html`<div>${list}</div>`
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let fragments = ['one', 'two', 'three'].map(text => {
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const fragment = document.createDocumentFragment()
|
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fragment.append(new Text(text))
|
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return fragment
|
||||
})
|
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render(main(fragments), surface)
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expect(surface.innerHTML).to.equal('<div>onetwothree</div>')
|
||||
fragments = ['four', 'five', 'six'].map(text => {
|
||||
const fragment = document.createDocumentFragment()
|
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fragment.append(new Text(text))
|
||||
return fragment
|
||||
})
|
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render(main(fragments), surface)
|
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expect(surface.innerHTML).to.equal('<div>fourfivesix</div>')
|
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})
|
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|
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it('supports other strings iterables in nodes', () => {
|
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const main = list => html`<div>${list}</div>`
|
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render(main(new Set(['one', 'two', 'three'])), surface)
|
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expect(surface.innerHTML).to.equal('<div>onetwothree</div>')
|
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render(
|
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main(
|
||||
new Map([
|
||||
[4, 'four'],
|
||||
[5, 'five'],
|
||||
[6, 'six']
|
||||
]).values()
|
||||
),
|
||||
surface
|
||||
)
|
||||
expect(surface.innerHTML).to.equal('<div>fourfivesix</div>')
|
||||
})
|
||||
|
||||
it('supports iterables of strings in attributes', () => {
|
||||
const main = list => html`<div class="${list}"></div>`
|
||||
render(main(['one', 'two', 'three']), surface)
|
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expect(surface.innerHTML).to.equal('<div class="one two three"></div>')
|
||||
render(main(new Set(['four', 'five', 'six'])), surface)
|
||||
expect(surface.innerHTML).to.equal('<div class="four five six"></div>')
|
||||
})
|
||||
|
||||
it('supports nested iterables of document fragments', () => {
|
||||
// prettier-ignore
|
||||
const main = list => html`<ul>${list}</ul>`
|
||||
render(
|
||||
main(
|
||||
['One', 'Two'].map(text => {
|
||||
const f = document.createDocumentFragment()
|
||||
const li = document.createElement('li')
|
||||
li.textContent = text
|
||||
f.append(li)
|
||||
return f
|
||||
})
|
||||
),
|
||||
surface
|
||||
)
|
||||
expect(surface.innerHTML).to.equal('<ul><li>One</li><li>Two</li></ul>')
|
||||
})
|
||||
|
||||
it('supports nested iterables of templates', () => {
|
||||
const child = item => html`<li>${item.name}</li>`
|
||||
// prettier-ignore
|
||||
const main = list => html`<ul>${list.map(child)}</ul>`
|
||||
render(main([{name: 'One'}, {name: 'Two'}, {name: 'Three'}]), surface)
|
||||
expect(surface.innerHTML).to.equal('<ul><li>One</li><li>Two</li><li>Three</li></ul>')
|
||||
render(main([{name: 'Two'}, {name: 'Three'}, {name: 'Four'}]), surface)
|
||||
expect(surface.innerHTML).to.equal('<ul><li>Two</li><li>Three</li><li>Four</li></ul>')
|
||||
})
|
||||
})
|
||||
|
||||
describe('directives', () => {
|
||||
it('handles directives differently', () => {
|
||||
const setAsFoo = directive(() => part => {
|
||||
part.value = 'foo'
|
||||
})
|
||||
const main = () => html`<div class="${setAsFoo()}"></div>`
|
||||
render(main(), surface)
|
||||
expect(surface.innerHTML).to.equal('<div class="foo"></div>')
|
||||
})
|
||||
})
|
||||
|
||||
describe('event listeners', () => {
|
||||
it('handles event listeners properly', () => {
|
||||
let i = 0
|
||||
const main = () => html`<div onclick="${() => (i += 1)}"></div>`
|
||||
render(main(), surface)
|
||||
expect(surface.innerHTML).to.equal('<div></div>')
|
||||
expect(i).to.equal(0)
|
||||
surface.children[0].click()
|
||||
expect(i).to.equal(1)
|
||||
surface.children[0].dispatchEvent(new CustomEvent('click'))
|
||||
expect(i).to.equal(2)
|
||||
})
|
||||
|
||||
it('does not rebind event listeners multiple times', () => {
|
||||
let i = 0
|
||||
const main = () => html`<div onclick="${() => (i += 1)}"></div>`
|
||||
render(main(), surface)
|
||||
render(main(), surface)
|
||||
render(main(), surface)
|
||||
expect(surface.innerHTML).to.equal('<div></div>')
|
||||
expect(i).to.equal(0)
|
||||
surface.children[0].click()
|
||||
expect(i).to.equal(1)
|
||||
surface.children[0].dispatchEvent(new CustomEvent('click'))
|
||||
expect(i).to.equal(2)
|
||||
})
|
||||
|
||||
it('allows events to be driven by params', () => {
|
||||
let i = 0
|
||||
const main = amt => html`<div onclick="${() => (i += amt)}"></div>`
|
||||
render(main(1), surface)
|
||||
expect(surface.innerHTML).to.equal('<div></div>')
|
||||
expect(i).to.equal(0)
|
||||
surface.children[0].click()
|
||||
expect(i).to.equal(1)
|
||||
render(main(4), surface)
|
||||
surface.children[0].dispatchEvent(new CustomEvent('click'))
|
||||
expect(i).to.equal(5)
|
||||
})
|
||||
|
||||
it('will unbind event listeners by passing null', () => {
|
||||
let i = 0
|
||||
const main = listener => html`<div onclick="${listener}"></div>`
|
||||
render(
|
||||
main(() => (i += 1)),
|
||||
surface
|
||||
)
|
||||
expect(surface.innerHTML).to.equal('<div></div>')
|
||||
expect(i).to.equal(0)
|
||||
surface.children[0].click()
|
||||
expect(i).to.equal(1)
|
||||
render(main(null), surface)
|
||||
surface.children[0].click()
|
||||
surface.children[0].click()
|
||||
surface.children[0].click()
|
||||
expect(i).to.equal(1)
|
||||
})
|
||||
|
||||
it('binds event handler objects', () => {
|
||||
const handler = {
|
||||
i: 0,
|
||||
handleEvent() {
|
||||
this.i += 1
|
||||
}
|
||||
}
|
||||
const main = () => html`<div onclick="${handler}"></div>`
|
||||
render(main(), surface)
|
||||
expect(surface.innerHTML).to.equal('<div></div>')
|
||||
expect(handler.i).to.equal(0)
|
||||
surface.children[0].click()
|
||||
expect(handler.i).to.equal(1)
|
||||
surface.children[0].dispatchEvent(new CustomEvent('click'))
|
||||
expect(handler.i).to.equal(2)
|
||||
})
|
||||
})
|
||||
})
|
||||
|
|
|
@ -0,0 +1,250 @@
|
|||
import {html, render, directive} from '../lib/index.js'
|
||||
|
||||
describe('render', () => {
|
||||
let surface
|
||||
beforeEach(() => {
|
||||
surface = document.createElement('section')
|
||||
})
|
||||
|
||||
it('calls `createCallback` on first render', () => {
|
||||
const main = (x = null) => html`<div class="${x}"></div>`
|
||||
let called = false
|
||||
const instance = main()
|
||||
instance.processor = {
|
||||
processCallback() {
|
||||
throw new Error('Expected processCallback to not be called')
|
||||
},
|
||||
createCallback() {
|
||||
called = true
|
||||
}
|
||||
}
|
||||
instance.renderInto(surface)
|
||||
expect(called).to.equal(true)
|
||||
})
|
||||
|
||||
it('memoizes by TemplateResult#template, updating old templates with new values', () => {
|
||||
const main = (x = null) => html`<div class="${x}"></div>`
|
||||
render(main('foo'), surface)
|
||||
expect(surface.innerHTML).to.equal('<div class="foo"></div>')
|
||||
render(main('bar'), surface)
|
||||
expect(surface.innerHTML).to.equal('<div class="bar"></div>')
|
||||
})
|
||||
|
||||
describe('nesting', () => {
|
||||
it('supports nested html calls', () => {
|
||||
const main = child => html`<div>${child}</div>`
|
||||
const child = message => html`<span>${message}</span>`
|
||||
render(main(child('Hello')), surface)
|
||||
expect(surface.innerHTML).to.equal('<div><span>Hello</span></div>')
|
||||
})
|
||||
|
||||
it('updates nodes from repeat calls', () => {
|
||||
const main = child => html`<div>${child}</div>`
|
||||
const child = message => html`<span>${message}</span>`
|
||||
render(main(child('Hello')), surface)
|
||||
expect(surface.innerHTML).to.equal('<div><span>Hello</span></div>')
|
||||
render(main(child('Goodbye')), surface)
|
||||
expect(surface.innerHTML).to.equal('<div><span>Goodbye</span></div>')
|
||||
})
|
||||
|
||||
it('can nest document fragments and text nodes', () => {
|
||||
const main = frag => html`<span>${frag}</span>`
|
||||
const fragment = document.createDocumentFragment()
|
||||
fragment.append(new Text('Hello World'))
|
||||
render(main(fragment), surface)
|
||||
expect(surface.innerHTML).to.equal('<span>Hello World</span>')
|
||||
fragment.append(document.createTextNode('Hello Universe!'))
|
||||
render(main(fragment), surface)
|
||||
expect(surface.innerHTML).to.equal('<span>Hello Universe!</span>')
|
||||
})
|
||||
|
||||
it('renders DocumentFragments nested in sub templates nested in arrays', () => {
|
||||
const sub = () => {
|
||||
const frag = document.createDocumentFragment()
|
||||
frag.appendChild(document.createElement('div'))
|
||||
return html`<span>${frag}</span>`
|
||||
}
|
||||
const main = () => html`<div>${[sub(), sub()]}</div>`
|
||||
render(main(), surface)
|
||||
expect(surface.innerHTML).to.contain('<div><span><div></div></span><span><div></div></span></div>')
|
||||
})
|
||||
})
|
||||
|
||||
describe('iterables', () => {
|
||||
it('supports arrays of strings in nodes', () => {
|
||||
const main = list => html`<div>${list}</div>`
|
||||
render(main(['one', 'two', 'three']), surface)
|
||||
expect(surface.innerHTML).to.equal('<div>onetwothree</div>')
|
||||
render(main(['four', 'five', 'six']), surface)
|
||||
expect(surface.innerHTML).to.equal('<div>fourfivesix</div>')
|
||||
})
|
||||
|
||||
it('supports iterables of Sub Templates with text nodes', () => {
|
||||
const main = list => html`<div>${list}</div>`
|
||||
let fragments = ['one', 'two', 'three'].map(text => html`${text}`)
|
||||
render(main(fragments), surface)
|
||||
expect(surface.innerHTML).to.equal('<div>onetwothree</div>')
|
||||
fragments = ['four', 'five', 'six'].map(text => html`${text}`)
|
||||
render(main(fragments), surface)
|
||||
expect(surface.innerHTML).to.equal('<div>fourfivesix</div>')
|
||||
})
|
||||
|
||||
it('supports iterables of fragments with text nodes', () => {
|
||||
const main = list => html`<div>${list}</div>`
|
||||
let fragments = ['one', 'two', 'three'].map(text => {
|
||||
const fragment = document.createDocumentFragment()
|
||||
fragment.append(new Text(text))
|
||||
return fragment
|
||||
})
|
||||
render(main(fragments), surface)
|
||||
expect(surface.innerHTML).to.equal('<div>onetwothree</div>')
|
||||
fragments = ['four', 'five', 'six'].map(text => {
|
||||
const fragment = document.createDocumentFragment()
|
||||
fragment.append(new Text(text))
|
||||
return fragment
|
||||
})
|
||||
render(main(fragments), surface)
|
||||
expect(surface.innerHTML).to.equal('<div>fourfivesix</div>')
|
||||
})
|
||||
|
||||
it('supports other strings iterables in nodes', () => {
|
||||
const main = list => html`<div>${list}</div>`
|
||||
render(main(new Set(['one', 'two', 'three'])), surface)
|
||||
expect(surface.innerHTML).to.equal('<div>onetwothree</div>')
|
||||
render(
|
||||
main(
|
||||
new Map([
|
||||
[4, 'four'],
|
||||
[5, 'five'],
|
||||
[6, 'six']
|
||||
]).values()
|
||||
),
|
||||
surface
|
||||
)
|
||||
expect(surface.innerHTML).to.equal('<div>fourfivesix</div>')
|
||||
})
|
||||
|
||||
it('supports iterables of strings in attributes', () => {
|
||||
const main = list => html`<div class="${list}"></div>`
|
||||
render(main(['one', 'two', 'three']), surface)
|
||||
expect(surface.innerHTML).to.equal('<div class="one two three"></div>')
|
||||
render(main(new Set(['four', 'five', 'six'])), surface)
|
||||
expect(surface.innerHTML).to.equal('<div class="four five six"></div>')
|
||||
})
|
||||
|
||||
it('supports nested iterables of document fragments', () => {
|
||||
// prettier-ignore
|
||||
const main = list => html`<ul>${list}</ul>`
|
||||
render(
|
||||
main(
|
||||
['One', 'Two'].map(text => {
|
||||
const f = document.createDocumentFragment()
|
||||
const li = document.createElement('li')
|
||||
li.textContent = text
|
||||
f.append(li)
|
||||
return f
|
||||
})
|
||||
),
|
||||
surface
|
||||
)
|
||||
expect(surface.innerHTML).to.equal('<ul><li>One</li><li>Two</li></ul>')
|
||||
})
|
||||
|
||||
it('supports nested iterables of templates', () => {
|
||||
const child = item => html`<li>${item.name}</li>`
|
||||
// prettier-ignore
|
||||
const main = list => html`<ul>${list.map(child)}</ul>`
|
||||
render(main([{name: 'One'}, {name: 'Two'}, {name: 'Three'}]), surface)
|
||||
expect(surface.innerHTML).to.equal('<ul><li>One</li><li>Two</li><li>Three</li></ul>')
|
||||
render(main([{name: 'Two'}, {name: 'Three'}, {name: 'Four'}]), surface)
|
||||
expect(surface.innerHTML).to.equal('<ul><li>Two</li><li>Three</li><li>Four</li></ul>')
|
||||
})
|
||||
})
|
||||
|
||||
describe('directives', () => {
|
||||
it('handles directives differently', () => {
|
||||
const setAsFoo = directive(() => part => {
|
||||
part.value = 'foo'
|
||||
})
|
||||
const main = () => html`<div class="${setAsFoo()}"></div>`
|
||||
render(main(), surface)
|
||||
expect(surface.innerHTML).to.equal('<div class="foo"></div>')
|
||||
})
|
||||
})
|
||||
|
||||
describe('event listeners', () => {
|
||||
it('handles event listeners properly', () => {
|
||||
let i = 0
|
||||
const main = () => html`<div onclick="${() => (i += 1)}"></div>`
|
||||
render(main(), surface)
|
||||
expect(surface.innerHTML).to.equal('<div></div>')
|
||||
expect(i).to.equal(0)
|
||||
surface.children[0].click()
|
||||
expect(i).to.equal(1)
|
||||
surface.children[0].dispatchEvent(new CustomEvent('click'))
|
||||
expect(i).to.equal(2)
|
||||
})
|
||||
|
||||
it('does not rebind event listeners multiple times', () => {
|
||||
let i = 0
|
||||
const main = () => html`<div onclick="${() => (i += 1)}"></div>`
|
||||
render(main(), surface)
|
||||
render(main(), surface)
|
||||
render(main(), surface)
|
||||
expect(surface.innerHTML).to.equal('<div></div>')
|
||||
expect(i).to.equal(0)
|
||||
surface.children[0].click()
|
||||
expect(i).to.equal(1)
|
||||
surface.children[0].dispatchEvent(new CustomEvent('click'))
|
||||
expect(i).to.equal(2)
|
||||
})
|
||||
|
||||
it('allows events to be driven by params', () => {
|
||||
let i = 0
|
||||
const main = amt => html`<div onclick="${() => (i += amt)}"></div>`
|
||||
render(main(1), surface)
|
||||
expect(surface.innerHTML).to.equal('<div></div>')
|
||||
expect(i).to.equal(0)
|
||||
surface.children[0].click()
|
||||
expect(i).to.equal(1)
|
||||
render(main(4), surface)
|
||||
surface.children[0].dispatchEvent(new CustomEvent('click'))
|
||||
expect(i).to.equal(5)
|
||||
})
|
||||
|
||||
it('will unbind event listeners by passing null', () => {
|
||||
let i = 0
|
||||
const main = listener => html`<div onclick="${listener}"></div>`
|
||||
render(
|
||||
main(() => (i += 1)),
|
||||
surface
|
||||
)
|
||||
expect(surface.innerHTML).to.equal('<div></div>')
|
||||
expect(i).to.equal(0)
|
||||
surface.children[0].click()
|
||||
expect(i).to.equal(1)
|
||||
render(main(null), surface)
|
||||
surface.children[0].click()
|
||||
surface.children[0].click()
|
||||
surface.children[0].click()
|
||||
expect(i).to.equal(1)
|
||||
})
|
||||
|
||||
it('binds event handler objects', () => {
|
||||
const handler = {
|
||||
i: 0,
|
||||
handleEvent() {
|
||||
this.i += 1
|
||||
}
|
||||
}
|
||||
const main = () => html`<div onclick="${handler}"></div>`
|
||||
render(main(), surface)
|
||||
expect(surface.innerHTML).to.equal('<div></div>')
|
||||
expect(handler.i).to.equal(0)
|
||||
surface.children[0].click()
|
||||
expect(handler.i).to.equal(1)
|
||||
surface.children[0].dispatchEvent(new CustomEvent('click'))
|
||||
expect(handler.i).to.equal(2)
|
||||
})
|
||||
})
|
||||
})
|
Загрузка…
Ссылка в новой задаче