75 lines
2.1 KiB
TypeScript
75 lines
2.1 KiB
TypeScript
import { CommunicateMessage, FormSavedDataContent } from './types'
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class FormSaverExtension {
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private readonly api = browser ?? chrome
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public startListen = (): void =>
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this.api.runtime.onMessage.addListener(this.messageHandler.bind(this))
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// ---
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private readonly messageHandler = (message: unknown, _: any, sendResponse: (message: CommunicateMessage) => void): undefined => {
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const receivedMessage = message as CommunicateMessage
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if (receivedMessage.type === 'SAVE_FORM') {
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return sendResponse(this.saveForm()) as undefined
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}
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if (receivedMessage.type === 'LOAD_FORM') {
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return this.loadForm(receivedMessage.data?.contents ?? []) as undefined
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}
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}
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private readonly saveForm = (): CommunicateMessage => {
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const inputElements = this.findInputElements()
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return {
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type: 'FORM_SAVED',
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data: {
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url: window.location.href,
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contents: [
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...this.retrieveTextInputValues(inputElements)
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]
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}
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}
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}
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private readonly loadForm = (formSaved: FormSavedDataContent[]): void => {
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this.loadTextInputValues(formSaved)
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}
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// ---
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private readonly findInputElements = (): HTMLInputElement[] =>
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[...document.querySelectorAll('input')]
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private readonly retrieveTextInputValues = (elements: HTMLInputElement[]): FormSavedDataContent[] =>
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elements
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.filter((v) => v.type === 'text')
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.map((v) => ({
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selector: `div#${v.parentElement?.id ?? ''}>input`,
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type: 'TEXT' as const,
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value: v.value
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}))
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// ---
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private readonly loadTextInputValues = (formSaved: FormSavedDataContent[]): void =>
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formSaved
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.filter((v) => v.type === 'TEXT')
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.forEach(this.loadTextInputValue.bind(this))
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private readonly loadTextInputValue = (formSaved: FormSavedDataContent): void => {
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const element = document.querySelector(formSaved.selector)
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if (element === null || !(element instanceof HTMLInputElement) || element.type !== 'text') { return }
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element.value = formSaved.value
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element.dispatchEvent(new Event('input', {
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bubbles: true
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}))
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}
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}
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new FormSaverExtension()
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.startListen()
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