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node-keypress.tsx
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node-keypress.tsx
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/*
* Copyright (c) 2021-2022 R3BL LLC. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
import { Box, render, Text, useApp } from "ink"
import React, { FC } from "react"
import {
_also, ConfirmInput, createNewShortcutToActionMap, LifecycleHelper, ShortcutToActionMap,
StateHolder, TextColor, TimerRegistry, UseKeyboardReturnValue, useKeyboardWithMapCached,
UseKeyboardWrapper, useStateSafely,
} from "../../index"
// Types & data classes.
export type HookOutput = {
answer: StateHolder<string>,
useKeyboard: UseKeyboardReturnValue,
greeting: string
}
export type HookInput = { name: string }
type InternalProps = { ctx: HookOutput }
// Hooks.
const runHooks = (input: HookInput): HookOutput => {
const { name } = input
const app = useApp()
const [ answer, setAnswer ] = useStateSafely<string>("").asArray()
const createShortcuts = (): ShortcutToActionMap => {
return _also(
createNewShortcutToActionMap(),
map => map
.set("q", app.exit)
.set("ctrl+q", app.exit)
)
}
return {
greeting: `Hello ${name}`,
answer: new StateHolder(answer, setAnswer),
useKeyboard: useKeyboardWithMapCached(createShortcuts)
}
}
// Function components.
export const App: FC = () => {
const ctx: HookOutput = runHooks({ name: "" })
const [ text ] = ctx.answer.asArray()
return (
<UseKeyboardWrapper>
<Box flexDirection="column">
<Row_Debug ctx={ctx}/>
<UnicornQuestion ctx={ctx}/>
{text ? <Text color="green">{text}</Text> : undefined}
</Box>
</UseKeyboardWrapper>
)
}
const Row_Debug: FC<InternalProps> =
({ ctx }) => {
const { keyPress: kp, inRawMode: mode } = ctx.useKeyboard
return mode ?
<Text color="magenta">keyPress: {kp ? `${kp.toString()}` : "n/a"}</Text> :
<Text color="gray">keyb disabled</Text>
}
const UnicornQuestion: FC<InternalProps> =
({ ctx }) => {
const [ _, setText ] = ctx.answer.asArray()
const onSubmit = (answer: boolean) => {
setText(answer ? "You like rainbows 🌈" : "You don't like rainbows 😥")
}
return (
<Box flexDirection="column">
<Text>Do you like rainbows? (Y/n)</Text>
<ConfirmInput
placeholderBeforeSubmit="Type y/n, then press enter to submit"
placeholderAfterSubmit="Thank you"
defaultValue={false}
onSubmit={onSubmit}
/>
</Box>
)
}
// main().
const main = async (): Promise<void> => {
const instance = render(<App/>)
LifecycleHelper.addExitListener(() => {
TimerRegistry.killAll()
instance.unmount()
})
try {
await instance.waitUntilExit()
console.log(TextColor.builder.bgYellow.black.build()("Exiting ink"))
} catch (err) {
console.error(TextColor.builder.bgYellow.black.build()("Problem with exiting ink"))
}
}
main().catch(console.log)