.playground/pages/composant/inputNumber.vue

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+<template>
+  <div class="grid grid-cols-1 items-start gap-6 md:grid-cols-2">
+    <div class="rounded-lg border p-4">
+      <h2 class="mb-4 text-xl font-bold">Simple</h2>
+      <MalioInputNumber
+        v-model="simpleValue"
+        label="Quantite"
+      />
+    </div>
+
+    <div class="rounded-lg border p-4">
+      <h2 class="mb-4 text-xl font-bold">Valeur initiale</h2>
+      <MalioInputNumber
+        v-model="initialValue"
+        label="Participants"
+      />
+    </div>
+
+    <div class="rounded-lg border p-4">
+      <h2 class="mb-4 text-xl font-bold">Avec bornes</h2>
+      <MalioInputNumber
+        v-model="boundedValue"
+        label="Places"
+        :min="1"
+        :max="5"
+        hint="Minimum 1, maximum 5"
+      />
+    </div>
+
+    <div class="rounded-lg border p-4">
+      <h2 class="mb-4 text-xl font-bold">Desactive</h2>
+      <MalioInputNumber
+        v-model="disabledValue"
+        label="Articles"
+        disabled
+      />
+    </div>
+
+    <div class="rounded-lg border p-4">
+      <h2 class="mb-4 text-xl font-bold">Readonly</h2>
+      <MalioInputNumber
+        v-model="readonlyValue"
+        label="Tickets"
+        readonly
+        hint="Valeur verrouillee"
+      />
+    </div>
+
+    <div class="rounded-lg border p-4">
+      <h2 class="mb-4 text-xl font-bold">Erreur</h2>
+      <MalioInputNumber
+        v-model="errorValue"
+        label="Quantite"
+        :min="1"
+        error="La quantite minimale est 1"
+      />
+    </div>
+
+    <div class="rounded-lg border p-4">
+      <h2 class="mb-4 text-xl font-bold">Succes</h2>
+      <MalioInputNumber
+        v-model="successValue"
+        label="Quantite"
+        success="Quantite validee"
+      />
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import {ref} from 'vue'
+
+const simpleValue = ref('')
+const initialValue = ref('3')
+const boundedValue = ref('2')
+const disabledValue = ref('4')
+const readonlyValue = ref('7')
+const errorValue = ref('0')
+const successValue = ref('2')
+</script>

app/components/malio/InputNumber.test.ts

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+import {describe, expect, it} from 'vitest'
+import {mount} from '@vue/test-utils'
+import type {DefineComponent} from 'vue'
+import InputNumber from './InputNumber.vue'
+
+type InputNumberProps = {
+  modelValue?: string | null
+  label?: string
+  readonly?: boolean
+  min?: number | string
+  max?: number | string
+}
+
+const InputNumberForTest = InputNumber as DefineComponent<InputNumberProps>
+
+const mountInputNumber = (props: InputNumberProps = {}) =>
+  mount(InputNumberForTest, {
+    props,
+    global: {
+      stubs: {
+        IconifyIcon: {
+          template: '<span data-test="icon" v-bind="$attrs" />',
+        },
+      },
+    },
+  })
+
+describe('MalioInputNumber', () => {
+  it('renders the input with a fixed 20px height', () => {
+    const wrapper = mountInputNumber()
+    const input = wrapper.get('input')
+
+    expect(input.classes()).toContain('h-[20px]')
+  })
+
+  it('renders the increment and decrement buttons with a fixed 20px height', () => {
+    const wrapper = mountInputNumber()
+    const buttons = wrapper.findAll('button')
+
+    expect(buttons).toHaveLength(2)
+  })
+
+  it('still emits update:modelValue on input', async () => {
+    const wrapper = mountInputNumber({modelValue: ''})
+    const input = wrapper.get('input')
+
+    await input.setValue('99')
+
+    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual(['99'])
+  })
+
+  it('filters letters from the input value', async () => {
+    const wrapper = mountInputNumber({modelValue: ''})
+    const input = wrapper.get('input')
+
+    await input.setValue('a1b2c3')
+
+    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual(['123'])
+    expect(input.element.value).toBe('123')
+  })
+
+  it('increments the current value when clicking plus', async () => {
+    const wrapper = mountInputNumber({modelValue: '2'})
+
+    await wrapper.findAll('button')[1].trigger('click')
+
+    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual(['3'])
+  })
+
+  it('decrements the current value when clicking minus', async () => {
+    const wrapper = mountInputNumber({modelValue: '2'})
+
+    await wrapper.findAll('button')[0].trigger('click')
+
+    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual(['1'])
+  })
+
+  it('does not change the value from buttons when readonly', async () => {
+    const wrapper = mountInputNumber({modelValue: '2', readonly: true})
+
+    await wrapper.findAll('button')[1].trigger('click')
+
+    expect(wrapper.emitted('update:modelValue')).toBeUndefined()
+  })
+
+  it('disables minus and prevents decrement at min', async () => {
+    const wrapper = mountInputNumber({modelValue: '2', min: 2})
+    const minusButton = wrapper.findAll('button')[0]
+
+    expect(minusButton.attributes('disabled')).toBeDefined()
+
+    await minusButton.trigger('click')
+
+    expect(wrapper.emitted('update:modelValue')).toBeUndefined()
+  })
+
+  it('disables plus and prevents increment at max', async () => {
+    const wrapper = mountInputNumber({modelValue: '2', max: 2})
+    const plusButton = wrapper.findAll('button')[1]
+
+    expect(plusButton.attributes('disabled')).toBeDefined()
+
+    await plusButton.trigger('click')
+
+    expect(wrapper.emitted('update:modelValue')).toBeUndefined()
+  })
+
+  it('clamps manual input to max', async () => {
+    const wrapper = mountInputNumber({modelValue: '', max: 5})
+    const input = wrapper.get('input')
+
+    await input.setValue('12')
+
+    expect(wrapper.emitted('update:modelValue')?.[0]).toEqual(['5'])
+    expect(input.element.value).toBe('5')
+  })
+})

app/components/malio/InputNumber.vue

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+<template>
+  <div :class="mergedGroupClass" >
+    <label
+      v-if="label"
+      :for="inputId"
+      :class="mergedLabelClass"
+    >
+      {{ label }}
+    </label>
+    <button
+      type="button"
+      :disabled="isMinusDisabled"
+      @click="decrement"
+    >
+      <IconifyIcon
+        icon="mdi:minus"
+        :class="mergedButtonMinusClass"
+      />
+    </button>
+    <input
+      :id="inputId"
+      :name="name"
+      autocomplete="off"
+      :class="mergedInputClass"
+      :size="inputCharacterWidth"
+      :value="currentValue"
+      :required="required"
+      :disabled="disabled"
+      :readonly="readonly"
+      :aria-invalid="!!error"
+      :aria-describedby="describedBy"
+      v-bind="attrs"
+      type="text"
+      inputmode="numeric"
+      placeholder="_"
+      @input="onInput"
+      @focus="isFocused = true"
+      @blur="isFocused = false"
+    >
+    <button
+      type="button"
+      :disabled="isPlusDisabled"
+      @click="increment"
+    >
+      <IconifyIcon
+        icon="mdi:plus"
+        :class="mergedButtonPlusClass"
+      />
+    </button>
+
+  </div>
+  <p
+    v-if="hint || hasError || hasSuccess"
+    :id="`${inputId}-describedby`"
+    :class="[
+        hasError
+          ? 'text-m-error'
+          : hasSuccess
+            ? 'text-m-success'
+            : 'text-m-muted',
+        'mt-1 text-xs ml-[2px] ',
+      ]"
+  >
+    {{ hint || error || success }}
+  </p>
+</template>
+
+<script setup lang="ts">
+import {computed, ref, useAttrs, useId} from 'vue'
+import {Icon as IconifyIcon} from '@iconify/vue'
+import {twMerge} from 'tailwind-merge'
+
+defineOptions({name: 'MalioInputNumber', inheritAttrs: false})
+
+const props = withDefaults(
+  defineProps<{
+    id?: string
+    label?: string
+    name?: string
+    modelValue?: string | null | undefined
+    inputClass?: string
+    labelClass?: string
+    groupClass?: string
+    required?: boolean
+    min?: number | string
+    max?: number | string
+    disabled?: boolean
+    readonly?: boolean
+    hint?: string
+    error?: string
+    success?: string
+  }>(),
+  {
+    id: '',
+    name: '',
+    modelValue: undefined,
+    label: '',
+    inputClass: '',
+    labelClass: '',
+    groupClass: '',
+    required: false,
+    min: undefined,
+    max: undefined,
+    readonly: false,
+    disabled: false,
+    hint: '',
+    error: '',
+    success: '',
+  },
+)
+
+const attrs = useAttrs()
+const generatedId = useId()
+const localValue = ref('')
+const isFocused = ref(false)
+
+const inputId = computed(() => props.id?.toString() || `malio-input-text-${generatedId}`)
+const isControlled = computed(() => props.modelValue !== undefined)
+const currentValue = computed(() => (isControlled.value ? (props.modelValue ?? '') : localValue.value))
+const hasError = computed(() => !!props.error)
+const hasSuccess = computed(() => !!props.success)
+const inputCharacterWidth = computed(() => Math.max(currentValue.value.length, 1))
+const parseBound = (value: number | string | undefined) => {
+  if (value === undefined || value === '') return undefined
+  const parsedValue = Number.parseInt(String(value), 10)
+  return Number.isNaN(parsedValue) ? undefined : parsedValue
+}
+
+const minValue = computed(() => parseBound(props.min))
+const maxValue = computed(() => parseBound(props.max))
+const currentNumericValue = computed(() => {
+  if (currentValue.value === '') return undefined
+  const parsedValue = Number.parseInt(currentValue.value, 10)
+  return Number.isNaN(parsedValue) ? undefined : parsedValue
+})
+const isMinusDisabled = computed(() =>
+  disabled.value
+  || props.readonly
+  || (minValue.value !== undefined
+    && currentNumericValue.value !== undefined
+    && currentNumericValue.value <= minValue.value),
+)
+const isPlusDisabled = computed(() =>
+  disabled.value
+  || props.readonly
+  || (maxValue.value !== undefined
+    && currentNumericValue.value !== undefined
+    && currentNumericValue.value >= maxValue.value),
+
+)
+const mergedGroupClass = computed(() =>
+  twMerge(
+    'relative mt-4 flex h-12 w-full items-center',
+    props.groupClass,
+  ),
+)
+const mergedInputClass = computed(() =>
+  twMerge(
+    ' peer h-[20px] border bg-white text-center outline-none placeholder:text-transparent text-lg border-x-0 border-black',
+    disabled.value ? 'cursor-not-allowed text-black/60 [&:not(:placeholder-shown)]:border-m-muted border-m-muted' : 'cursor-text',
+    hasError.value
+      ? 'border-m-error focus:border-m-error [&:not(:placeholder-shown)]:border-m-error'
+      : hasSuccess.value
+        ? 'border-m-success focus:border-m-success [&:not(:placeholder-shown)]:border-m-success'
+        : '',
+    props.inputClass,
+  ),
+)
+const mergedLabelClass = computed(() =>
+  twMerge(
+    'radio-text mt-px cursor-pointer text-black mr-3',
+    hasError.value ? 'text-m-error' : '',
+    hasSuccess.value ? 'text-m-success' : '',
+    disabled.value ? 'cursor-not-allowed text-black/60' : '',
+    props.labelClass,
+  ),
+)
+
+const mergedButtonMinusClass = computed(() =>
+  twMerge(
+    'h-[20px] w-[30px] border border-black rounded-s-[3px]',
+    props.readonly ? 'cursor-default' : 'cursor-pointer hover:bg-m-muted/10',
+    disabled.value ? 'cursor-not-allowed text-black/60 border-m-muted' : '',
+    hasError.value
+      ? 'border-m-error'
+      : hasSuccess.value
+        ? 'border-m-success'
+        : '',
+  ),
+)
+const mergedButtonPlusClass = computed(() =>
+  twMerge(
+    'h-[20px] w-[30px] border border-black rounded-e-[3px]',
+    props.readonly ? 'cursor-default' : 'cursor-pointer hover:bg-m-muted/10',
+    disabled.value ? 'cursor-not-allowed text-black/60 border-m-muted' : '',
+    hasError.value
+      ? 'border-m-error'
+      : hasSuccess.value
+        ? 'border-m-success'
+        : '',
+  ),
+)
+
+const describedBy = computed(() => {
+  const ids: string[] = []
+  if (props.hint && !hasSuccess.value && !hasError.value) ids.push(`${inputId.value}-hint`)
+  if (hasError.value) ids.push(`${inputId.value}-error`)
+  if (hasSuccess.value && !hasError.value) ids.push(`${inputId.value}-success`)
+  return ids.length ? ids.join(' ') : undefined
+})
+
+const emit = defineEmits<{
+  (event: 'update:modelValue', value: string): void
+}>()
+
+const updateValue = (value: string) => {
+  if (!isControlled.value) {
+    localValue.value = value
+  }
+  emit('update:modelValue', value)
+}
+
+const clampValue = (value: number) => {
+  if (minValue.value !== undefined && value < minValue.value) return minValue.value
+  if (maxValue.value !== undefined && value > maxValue.value) return maxValue.value
+  return value
+}
+
+const normalizeValue = (value: string) => {
+  const digitsOnly = value.replace(/\D+/g, '')
+
+  if (digitsOnly === '') return ''
+
+  return String(clampValue(Number.parseInt(digitsOnly, 10)))
+}
+
+const onInput = (event: Event) => {
+  const target = event.target as HTMLInputElement
+  const normalizedValue = normalizeValue(target.value)
+
+  target.value = normalizedValue
+  updateValue(normalizedValue)
+}
+
+const getNumericValue = () => {
+  const parsedValue = Number.parseInt(currentValue.value || '0', 10)
+  return Number.isNaN(parsedValue) ? 0 : parsedValue
+}
+
+const decrement = () => {
+  if (isMinusDisabled.value) return
+  updateValue(String(clampValue(getNumericValue() - 1)))
+}
+
+const increment = () => {
+  if (isPlusDisabled.value) return
+  updateValue(String(clampValue(getNumericValue() + 1)))
+}
+
+const disabled = computed(() => props.disabled)
+</script>

app/story/inputNumber.story.vue

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+<template>
+  <Story title="Input/Number">
+    <div class="grid grid-cols-1 gap-6 md:grid-cols-2">
+      <div class="rounded-lg border p-4">
+        <h2 class="mb-4 text-xl font-bold">Simple</h2>
+        <MalioInputNumber
+          v-model="simpleValue"
+          label="Quantite"
+        />
+      </div>
+
+      <div class="rounded-lg border p-4">
+        <h2 class="mb-4 text-xl font-bold">Valeur initiale</h2>
+        <MalioInputNumber
+          v-model="initialValue"
+          label="Participants"
+        />
+      </div>
+
+      <div class="rounded-lg border p-4">
+        <h2 class="mb-4 text-xl font-bold">Avec bornes</h2>
+        <MalioInputNumber
+          v-model="boundedValue"
+          label="Places"
+          :min="1"
+          :max="5"
+          hint="Minimum 1, maximum 5"
+        />
+      </div>
+
+      <div class="rounded-lg border p-4">
+        <h2 class="mb-4 text-xl font-bold">Desactive</h2>
+        <MalioInputNumber
+          v-model="disabledValue"
+          label="Articles"
+          disabled
+        />
+      </div>
+
+      <div class="rounded-lg border p-4">
+        <h2 class="mb-4 text-xl font-bold">Readonly</h2>
+        <MalioInputNumber
+          v-model="readonlyValue"
+          label="Tickets"
+          readonly
+          hint="Valeur verrouillee"
+        />
+      </div>
+
+      <div class="rounded-lg border p-4">
+        <h2 class="mb-4 text-xl font-bold">Erreur</h2>
+        <MalioInputNumber
+          v-model="errorValue"
+          label="Quantite"
+          :min="1"
+          error="La quantite minimale est 1"
+        />
+      </div>
+
+      <div class="rounded-lg border p-4">
+        <h2 class="mb-4 text-xl font-bold">Succes</h2>
+        <MalioInputNumber
+          v-model="successValue"
+          label="Quantite"
+          success="Quantite validee"
+        />
+      </div>
+    </div>
+  </Story>
+</template>
+
+<script setup lang="ts">
+import {ref} from 'vue'
+import MalioInputNumber from '../components/malio/InputNumber.vue'
+
+const simpleValue = ref('')
+const initialValue = ref('3')
+const boundedValue = ref('2')
+const disabledValue = ref('4')
+const readonlyValue = ref('7')
+const errorValue = ref('0')
+const successValue = ref('2')
+</script>