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98 lines
2.5 KiB
98 lines
2.5 KiB
import {autoGrow} from 'app/client/ui/forms';
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import {theme, vars} from 'app/client/ui2018/cssVars';
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import {dom, DomElementArg, IDomArgs, IInputOptions, Observable, styled, subscribe} from 'grainjs';
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export const cssInput = styled('input', `
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font-size: ${vars.mediumFontSize};
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height: 48px;
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line-height: 20px;
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width: 100%;
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padding: 14px;
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border: 1px solid ${theme.inputBorder};
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border-radius: 4px;
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outline: none;
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display: block;
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color: ${theme.inputFg};
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background-color: ${theme.inputBg};
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&::placeholder {
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color: ${theme.inputPlaceholderFg};
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}
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&[type=number] {
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-moz-appearance: textfield;
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}
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&[type=number]::-webkit-inner-spin-button,
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&[type=number]::-webkit-outer-spin-button {
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-webkit-appearance: none;
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margin: 0;
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}
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&-invalid {
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border: 1px solid ${theme.inputInvalid};
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}
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&-valid {
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border: 1px solid ${theme.inputValid};
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}
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`);
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/**
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* Builds a text input that updates `obs` as you type.
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*/
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export function textInput(obs: Observable<string|undefined>, ...args: DomElementArg[]): HTMLInputElement {
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return cssInput(
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dom.prop('value', u => u(obs) || ''),
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dom.on('input', (_e, elem) => obs.set(elem.value)),
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...args,
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);
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}
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export interface ITextAreaOptions extends IInputOptions {
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autoGrow?: boolean;
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save?: (value: string) => void;
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}
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export function textarea(
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obs: Observable<string>, options?: ITextAreaOptions|null, ...args: IDomArgs<HTMLTextAreaElement>
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): HTMLTextAreaElement {
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const isValid = options?.isValid;
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function setValue(elem: HTMLTextAreaElement) {
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if (options?.save) { options.save(elem.value); }
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else { obs.set(elem.value); }
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if (isValid) { isValid.set(elem.validity.valid); }
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}
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const value = options?.autoGrow ? Observable.create(null, obs.get()) : null;
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const trackInput = Boolean(options?.onInput || options?.autoGrow);
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const onInput = trackInput ? dom.on('input', (e, elem: HTMLTextAreaElement) => {
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if (options?.onInput) {
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setValue(elem);
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}
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if (options?.autoGrow) {
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value?.set(elem.value);
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}
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}) : null;
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return dom('textarea', ...args,
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value ? [
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dom.autoDispose(value),
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dom.autoDispose(obs.addListener(v => value.set(v))),
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] : null,
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dom.prop('value', use => use(obs) ?? ''),
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(isValid ?
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(elem) => dom.autoDisposeElem(elem,
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subscribe(obs, (use) => isValid.set(elem.checkValidity()))) :
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null),
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onInput,
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options?.autoGrow ? [
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autoGrow(value!),
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dom.style('resize', 'none')
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] : null,
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dom.on('change', (e, elem) => setValue(elem)),
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);
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}
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