694 lines
18 KiB
Text
694 lines
18 KiB
Text
import { Meta, Story, html } from '@open-wc/demoing-storybook';
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/* eslint-disable import/no-extraneous-dependencies */
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import { LionInput } from '@lion/input';
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import '@lion/input-amount/lion-input-amount.js';
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import '@lion/input-date/lion-input-date.js';
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import '@lion/input-email/lion-input-email.js';
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import '@lion/input/lion-input.js';
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import {
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DefaultSuccess,
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EqualsLength,
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IsDate,
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IsEmail,
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IsNumber,
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loadDefaultFeedbackMessages,
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MaxDate,
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MaxLength,
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MaxNumber,
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MinDate,
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MinLength,
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MinMaxDate,
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MinMaxLength,
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MinMaxNumber,
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MinNumber,
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Required,
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Validator,
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Pattern,
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} from '@lion/validate';
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<Meta title="Forms/Validation/Examples" parameters={{ component: 'lion-input' }}/>
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## Required Validator
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The required validator can be put onto every form field element and will make sure that element is
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not empty.
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For an input that may mean that it is not an empty string,
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while for a checkbox group it means at least one checkbox needs to be checked.
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<Story name="Required Validator">
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{() => {
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loadDefaultFeedbackMessages();
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return html`
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<lion-input .validators=${[new Required()]} label="Required"></lion-input>
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`}}
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</Story>
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```html
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<lion-input .validators="${[new Required()]}" label="Required"></lion-input>
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```
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## String Validators
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Useful on input elements it allows to define how many characters can be entered.
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<Story name="String Validators">
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{html`
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<lion-input
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.validators=${[new EqualsLength(7)]}
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.modelValue=${'not exactly'}
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label="EqualsLength"
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></lion-input>
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<lion-input
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.validators=${[new MinLength(10)]}
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.modelValue=${'too short'}
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label="MinLength"
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></lion-input>
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<lion-input
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.validators=${[new MaxLength(7)]}
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.modelValue=${'too long'}
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label="MaxLength"
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></lion-input>
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<lion-input
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.validators=${[new MinMaxLength({ min: 10, max: 20 })]}
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.modelValue=${'that should be enough'}
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label="MinMaxLength"
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></lion-input>
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<lion-input
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.validators=${[new Pattern(/#LionRocks/)]}
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.modelValue=${'regex checks if "#Lion<NO SPACE>Rocks" is in this input #LionRocks'}
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label="Pattern"
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></lion-input>
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`}
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</Story>
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```html
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<lion-input
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.validators="${[new EqualsLength(7)]}"
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.modelValue="${'not exactly'}"
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label="EqualsLength"
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></lion-input>
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<lion-input
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.validators="${[new MinLength(10)]}"
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.modelValue="${'too short'}"
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label="MinLength"
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></lion-input>
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<lion-input
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.validators="${[new MaxLength(7)]}"
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.modelValue="${'too long'}"
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label="MaxLength"
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></lion-input>
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<lion-input
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.validators="${[new MinMaxLength({ min: 10, max: 20 })]}"
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.modelValue="${'that should be enough'}"
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label="MinMaxLength"
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></lion-input>
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```
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## Number Validators
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Number validations assume that it's modelValue is actually a number.
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Therefore it may only be used on input that have an appropriate parser/formatter like the input-amount.
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<Story name="Number Validators">
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{html`
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<lion-input-amount
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.validators="${[new IsNumber()]}"
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.modelValue="${'foo'}"
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label="IsNumber"
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></lion-input-amount>
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<lion-input-amount
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.validators="${[new MinNumber(7)]}"
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.modelValue="${5}"
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label="MinNumber"
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></lion-input-amount>
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<lion-input-amount
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.validators="${[new MaxNumber(7)]}"
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.modelValue="${9}"
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label="MaxNumber"
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></lion-input-amount>
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<lion-input-amount
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.validators="${[new MinMaxNumber({ min: 10, max: 20 })]}"
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.modelValue="${5}"
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label="MinMaxNumber"
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></lion-input-amount>
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`}
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</Story>
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```html
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<lion-input-amount
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.validators="${[new IsNumber()]}"
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.modelValue="${'foo'}"
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label="IsNumber"
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></lion-input-amount>
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<lion-input-amount
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.validators="${[new MinNumber(7)]}"
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.modelValue="${5}"
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label="MinNumber"
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></lion-input-amount>
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<lion-input-amount
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.validators="${[new MaxNumber(7)]}"
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.modelValue="${9}"
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label="MaxNumber"
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></lion-input-amount>
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<lion-input-amount
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.validators="${[new MinMaxNumber({ min: 10, max: 20 })]}"
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.modelValue="${5}"
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label="MinMaxNumber"
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></lion-input-amount>
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```
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## Date Validators
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Date validators work with real javascript dates. Use them on input-date.
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<Story name="Date Validators">
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{() => {
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const today = new Date();
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const year = today.getFullYear();
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const month = today.getMonth();
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const day = today.getDate();
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const yesterday = new Date(year, month, day - 1);
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const tomorrow = new Date(year, month, day + 1);
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return html`
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<lion-input-date
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.validators=${[new IsDate()]}
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.modelValue=${'foo'}
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label="IsDate"
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></lion-input-date>
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<lion-input-date
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.validators=${[new MinDate(today)]}
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.modelValue=${new Date(yesterday)}
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label="MinDate"
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></lion-input-date>
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<lion-input-date
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.validators=${[new MaxDate(today)]}
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.modelValue=${new Date(tomorrow)}
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label="MaxDate"
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></lion-input-date>
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<lion-input-date
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.validators=${[new MinMaxDate({ min: new Date(yesterday), max: new Date(tomorrow) })]}
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.modelValue=${new Date(today)}
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label="MinMaxDate"
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></lion-input-date>
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`;
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}}
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</Story>
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```js
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const today = new Date();
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const year = today.getFullYear();
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const month = today.getMonth();
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const day = today.getDate();
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const yesterday = new Date(year, month, day - 1);
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const tomorrow = new Date(year, month, day + 1);
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```
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```html
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<lion-input-date
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.validators="${[new IsDate()]}"
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.modelValue="${'foo'}"
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label="IsDate"
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></lion-input-date>
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<lion-input-date
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.validators="${[new MinDate(today)]}"
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.modelValue="${new Date(yesterday)}"
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label="MinDate"
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></lion-input-date>
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<lion-input-date
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.validators="${[new MaxDate(today)]}"
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.modelValue="${new Date(tomorrow)}"
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label="MaxDate"
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></lion-input-date>
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<lion-input-date
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.validators="${[new MinMaxDate({ min: new Date(yesterday), max: new Date(tomorrow) })]}"
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.modelValue="${new Date(today)}"
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label="MinMaxDate"
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></lion-input-date>
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```
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## Email Validator
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<Story name="Email Validator">
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{html`
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<lion-input-email
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.validators="${[new IsEmail()]}"
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.modelValue="${'foo'}"
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label="IsEmail"
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></lion-input-email>
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`}
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</Story>
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```html
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<lion-input-email
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.validators="${[new IsEmail()]}"
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.modelValue="${'foo'}"
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label="IsEmail"
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></lion-input-email>
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```
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## Validation Types
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When defining your own component you can decide to allow for multiple types of validation.
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By default only `error` is used, however there are certainly use cases where warning or success messages make sense.
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<Story name="Validation Types">
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{() => {
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try {
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class MyTypesInput extends LionInput {
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static get validationTypes() {
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return ['error', 'warning', 'info', 'success'];
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}
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}
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customElements.define('my-types-input', MyTypesInput);
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} catch (err) {
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// expected as it is a demo
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}
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return html`
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<style>
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.demo-types-input {
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padding: 0.5rem;
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}
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.demo-types-input[shows-feedback-for~='success'] {
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background-color: #e4ffe4;
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border: 1px solid green;
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}
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.demo-types-input[shows-feedback-for~='error'] {
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background-color: #ffd4d4;
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border: 1px solid red;
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}
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.demo-types-input[shows-feedback-for~='warning'] {
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background-color: #ffe4d4;
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border: 1px solid orange;
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}
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.demo-types-input[shows-feedback-for~='info'] {
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background-color: #d4e4ff;
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border: 1px solid blue;
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}
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</style>
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<my-types-input
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.validators="${[
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new Required(),
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new MinLength(7, { type: 'warning' }),
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new MaxLength(10, {
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type: 'info',
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getMessage: () => `Please, keep the length below the 10 characters.`,
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}),
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new DefaultSuccess(),
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]}"
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.modelValue="${'exactly'}"
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label="Validation Types"
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class="demo-types-input"
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></my-types-input>
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`;
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}}
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</Story>
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```js
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try {
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class MyTypesInput extends LionInput {
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static get validationTypes() {
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return ['error', 'warning', 'info', 'success'];
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}
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}
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customElements.define('my-types-input', MyTypesInput);
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} catch (err) {
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// expected as it is a demo
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}
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```
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```html
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<style>
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.demo-types-input {
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padding: 0.5rem;
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}
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.demo-types-input[shows-feedback-for~='success'] {
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background-color: #e4ffe4;
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border: 1px solid green;
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}
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.demo-types-input[shows-feedback-for~='error'] {
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background-color: #ffd4d4;
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border: 1px solid red;
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}
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.demo-types-input[shows-feedback-for~='warning'] {
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background-color: #ffe4d4;
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border: 1px solid orange;
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}
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.demo-types-input[shows-feedback-for~='info'] {
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background-color: #d4e4ff;
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border: 1px solid blue;
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}
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</style>
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<my-types-input
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.validators="${[
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new Required(),
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new MinLength(7, { type: 'warning' }),
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new MaxLength(10, {
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type: 'info',
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getMessage: () => `Please, keep the length below the 10 characters.`,
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}),
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new DefaultSuccess(),
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]}"
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.modelValue="${'exactly'}"
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label="Validation Types"
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class="demo-types-input"
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></my-types-input>
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```
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## Custom Validators
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Here is an example how you can make your own validator and providing the error messages directly within.
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You can even hard code localization in there if needed or you can use a localization system.
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<Story name="Custom Validators">
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{() => {
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class MyValidator extends Validator {
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static get validatorName() {
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return 'myValidator';
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}
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execute(modelValue, param) {
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return modelValue !== param;
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}
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static getMessage({ fieldName, modelValue, params: param }) {
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if (modelValue.length >= param.length - 1 && param.startsWith(modelValue)) {
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return 'Almost there...';
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}
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return `No "${param}" found in ${fieldName}`;
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}
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}
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return html`
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<lion-input
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label="Custom validator"
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help-text="Type 'mine' please"
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.validators="${[new MyValidator('mine')]}"
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.modelValue="${'mi'}"
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></lion-input>
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`;
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}
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}
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</Story>
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```js
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class MyValidator extends Validator {
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constructor(...args) {
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super(...args);
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}
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static get validatorName() {
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return 'myValidator';
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}
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execute(modelValue, param) {
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return modelValue !== param;
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}
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static getMessage({ fieldName, modelValue, params: param }) {
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if (modelValue.length >= param.length - 1 && param.startsWith(modelValue)) {
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return 'Almost there...';
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}
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return `No "${param}" found in ${fieldName}`;
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}
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}
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```
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```html
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<lion-input
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label="Custom validator"
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help-text="Type 'mine' please"
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.validators="${[new MyValidator('mine')]}"
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.modelValue="${'mi'}"
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></lion-input>
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```
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## Default messages
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To get default validation messages you need to import and call the `loadDefaultFeedbackMessages` function once in your application.
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Sometimes the default messages don't make sense for your input field. In that case you want to override it by adding a `getMessage` function to your validator.
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<Story name="Override default messages">
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{html`
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<lion-input
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.validators="${[new EqualsLength(4, { getMessage: () => '4 chars please...' })]}"
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.modelValue="${'123'}"
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label="Custom message for validator instance"
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></lion-input>
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<lion-input
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.validators="${[
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new EqualsLength(4, {
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getMessage: ({ modelValue, params: param }) => {
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const diff = modelValue.length - param;
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return `${Math.abs(diff)} too ${diff > 0 ? 'much' : 'few'}...`;
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},
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}),
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]}"
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.modelValue="${'way too much'}"
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label="Dynamic message for validator instance"
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></lion-input>
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`}
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</Story>
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```html
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<lion-input
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.validators="${[new EqualsLength(4, { getMessage: () => '4 chars please...' })]}"
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.modelValue="${'123'}"
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label="Custom message for validator instance"
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></lion-input>
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<lion-input
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.validators="${[
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new EqualsLength(4, {
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getMessage: ({ modelValue, params: param }) => {
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const diff = modelValue.length - param;
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return `${Math.abs(diff)} too ${diff > 0 ? 'much' : 'few'}...`;
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},
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}),
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]}"
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.modelValue="${'way too much'}"
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label="Dynamic message for validator instance"
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></lion-input>
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```
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## Override fieldName
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In the scenario that the default messages are correct, but you only want to change the `fieldName`, this can both be done for a single specific validator or for all at once.
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<Story name="Override fieldName">
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{html`
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<lion-input
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.validators="${[new EqualsLength(4, { fieldName: 'custom fieldName' })]}"
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.modelValue="${'123'}"
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label="Custom fieldName for 1 validator"
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></lion-input>
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<lion-input
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.validators="${[new Required(), new EqualsLength(4)]}"
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.fieldName="${'custom fieldName'}"
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.modelValue="${'123'}"
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label="Custom fieldName for all validators"
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></lion-input>
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`}
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</Story>
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```html
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<lion-input
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.validators="${[new EqualsLength(4, { fieldName: 'custom fieldName' })]}"
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.modelValue="${'123'}"
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label="Custom fieldName for 1 validator"
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></lion-input>
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<lion-input
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.validators="${[new Required(), new EqualsLength(4)]}"
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.fieldName="${'custom fieldName'}"
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.modelValue="${'123'}"
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label="Custom fieldName for all validators"
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></lion-input>
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```
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## Asynchronous validation
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<Story name="Asynchronous validation">
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{() => {
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function pause(ms = 0) {
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return new Promise(resolve => {
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setTimeout(() => {
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resolve();
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}, ms);
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});
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}
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class AsyncValidator extends Validator {
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constructor(...args) {
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super(...args);
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}
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static get validatorName() {
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return 'asyncValidator';
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}
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static get async() {
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return true;
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}
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async execute() {
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console.log('async pending...');
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await pause(2000);
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console.log('async done...');
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return true;
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}
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static getMessage({ modelValue }) {
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return `validated for modelValue: ${modelValue}...`;
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}
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}
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return html`
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<style>
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lion-input[is-pending] {
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opacity: 0.5;
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}
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</style>
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<lion-input
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label="Async validation"
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.validators="${[new AsyncValidator()]}"
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.modelValue="${'123'}"
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></lion-input>
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`}}
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</Story>
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```js
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function pause(ms = 0) {
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return new Promise(resolve => {
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setTimeout(() => {
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resolve();
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}, ms);
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});
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}
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class AsyncValidator extends Validator {
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constructor(...args) {
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super(...args);
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}
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static get validatorName() {
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return 'asyncValidator';
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}
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static get async() {
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return true;
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}
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async execute() {
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console.log('async pending...');
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await pause(2000);
|
|
console.log('async done...');
|
|
return true;
|
|
}
|
|
static getMessage({ modelValue }) {
|
|
return `validated for modelValue: ${modelValue}...`;
|
|
}
|
|
}
|
|
```
|
|
|
|
## Dynamic parameter change
|
|
|
|
<Story name="Dynamic parameter change">
|
|
{() => {
|
|
const beginDate = new Date('09/09/1990');
|
|
const minDateValidatorRef = new MinDate(beginDate, {
|
|
message: 'Fill in a date after your birth date',
|
|
});
|
|
return html`
|
|
<lion-input-date
|
|
label="Birth date"
|
|
help-text="Adjust this date to retrigger validation of the input below..."
|
|
.modelValue="${beginDate}"
|
|
@model-value-changed="${({ target: { modelValue, errorState } }) => {
|
|
if (!errorState) {
|
|
// Since graduation date is usually not before birth date
|
|
minDateValidatorRef.param = modelValue;
|
|
}
|
|
}}"
|
|
></lion-input-date>
|
|
<lion-input-date
|
|
label="Graduation date"
|
|
.modelValue="${new Date('09/09/1989')}"
|
|
.validators="${[minDateValidatorRef]}"
|
|
></lion-input-date>
|
|
`}}
|
|
</Story>
|
|
|
|
```js
|
|
const beginDate = new Date('09/09/1990');
|
|
const minDateValidatorRef = new MinDate(beginDate, {
|
|
message: 'Fill in a date after your birth date',
|
|
});
|
|
```
|
|
|
|
```html
|
|
<lion-input-date
|
|
label="Your birth date"
|
|
help-text="Adjust this date to retrigger validation of the input below..."
|
|
.modelValue="${beginDate}"
|
|
@model-value-changed="${({ target: { modelValue, errorState } }) => {
|
|
if (!errorState) {
|
|
// Since graduation date is usually not before birth date
|
|
minDateValidatorRef.param = modelValue;
|
|
}
|
|
}}"
|
|
></lion-input-date>
|
|
<lion-input-date
|
|
label="Your graduation date"
|
|
.modelValue="${new Date('09/09/1989')}"
|
|
.validators="${[minDateValidatorRef]}"
|
|
></lion-input-date>
|
|
```
|
|
|
|
## Disabled inputs validation
|
|
|
|
According to the W3C specs, Disabled fields should not be validated.
|
|
Therefor if the attribute disabled is present on a lion-input it will not be validated.
|
|
|
|
<Story name="Disabled Validators">
|
|
{html`
|
|
<lion-input
|
|
disabled
|
|
.validators=${[new EqualsLength(7)]}
|
|
.modelValue=${'not exactly'}
|
|
label="EqualsLength"
|
|
></lion-input>
|
|
<lion-input
|
|
disabled
|
|
.validators=${[new MinLength(10)]}
|
|
.modelValue=${'too short'}
|
|
label="MinLength"
|
|
></lion-input>
|
|
<lion-input
|
|
disabled
|
|
.validators=${[new MaxLength(7)]}
|
|
.modelValue=${'too long'}
|
|
label="MaxLength"
|
|
></lion-input>
|
|
<lion-input
|
|
disabled
|
|
.validators=${[new MinMaxLength({ min: 10, max: 20 })]}
|
|
.modelValue=${'that should be enough'}
|
|
label="MinMaxLength"
|
|
></lion-input>
|
|
`}
|
|
</Story>
|
|
|
|
```html
|
|
<lion-input
|
|
disabled
|
|
.validators=${[new EqualsLength(7)]}
|
|
.modelValue=${'not exactly'}
|
|
label="EqualsLength"
|
|
></lion-input>
|
|
<lion-input
|
|
disabled
|
|
.validators=${[new MinLength(10)]}
|
|
.modelValue=${'too short'}
|
|
label="MinLength"
|
|
></lion-input>
|
|
<lion-input
|
|
disabled
|
|
.validators=${[new MaxLength(7)]}
|
|
.modelValue=${'too long'}
|
|
label="MaxLength"
|
|
></lion-input>
|
|
<lion-input
|
|
disabled
|
|
.validators=${[new MinMaxLength({ min: 10, max: 20 })]}
|
|
.modelValue=${'that should be enough'}
|
|
label="MinMaxLength"
|
|
></lion-input>
|
|
```
|