fix: readonly component style + TabList + required component (#61)

| Numéro du ticket | Titre du ticket |
|------------------|-----------------|
|                  |                 |

## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [ ] TU/TI/TF rédigée
- [ ] TU/TI/TF OK
- [ ] CHANGELOG modifié

---------

Co-authored-by: THOLOT DECHENE Matthieu <matthieu@yuno.malio.fr>
Co-authored-by: matthieu <matthieu@yuno.malio.fr>
Reviewed-on: #61
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

app/components/malio/tab/TabList.vue

@@ -1,11 +1,81 @@
 <template>
   <div v-bind="$attrs">
+    <div v-if="isWindowed" class="flex items-center justify-center gap-[36px] border-b border-m-primary">
+      <button
+        type="button"
+        aria-label="Onglets précédents"
+        data-test="tab-prev"
+        :disabled="!canPrev"
+        :class="[
+          'transition-colors',
+          canPrev
+            ? 'cursor-pointer text-m-btn-primary hover:text-m-btn-primary-hover active:text-m-btn-primary-active'
+            : 'cursor-not-allowed text-m-disabled',
+        ]"
+        @click="prev"
+      >
+        <IconifyIcon icon="mdi:chevron-left" :width="28" />
+      </button>
+
+      <div
+        role="tablist"
+        class="flex flex-1 justify-center gap-[60px]"
+        :style="{ maxWidth: `${maxWidth}px` }"
+      >
+        <button
+          v-for="tab in visibleTabs"
+          :id="`${componentId}-tab-${tab.key}`"
+          :key="tab.key"
+          role="tab"
+          type="button"
+          :aria-selected="activeTab === tab.key"
+          :aria-controls="`${componentId}-panel-${tab.key}`"
+          :aria-disabled="!!tab.disabled"
+          :tabindex="focusedKey === tab.key ? 0 : -1"
+          :disabled="tab.disabled"
+          :class="[
+            'relative flex items-center gap-[18px] text-[24px] font-[600] transition-colors',
+            activeTab === tab.key
+              ? 'cursor-pointer text-m-primary after:content-[\'\'] after:absolute after:-bottom-[3px] after:left-0 after:right-0 after:h-[3px] after:bg-m-primary'
+              : tab.disabled
+                ? 'cursor-not-allowed text-m-primary/50'
+                : 'cursor-pointer text-m-primary/50 hover:text-m-primary/70',
+          ]"
+          @click="selectTab(tab.key)"
+        >
+          <IconifyIcon
+            v-if="tab.icon"
+            :icon="tab.icon"
+            :width="tab.iconSize ?? 24"
+          />
+          {{ tab.label }}
+        </button>
+      </div>
+
+      <button
+        type="button"
+        aria-label="Onglets suivants"
+        data-test="tab-next"
+        :disabled="!canNext"
+        :class="[
+          'transition-colors',
+          canNext
+            ? 'cursor-pointer text-m-btn-primary hover:text-m-btn-primary-hover active:text-m-btn-primary-active'
+            : 'cursor-not-allowed text-m-disabled',
+        ]"
+        @click="next"
+      >
+        <IconifyIcon icon="mdi:chevron-right" :width="28" />
+      </button>
+    </div>
+
     <div
+      v-else
       role="tablist"
       class="flex justify-center gap-[60px] border-b border-m-primary"
     >
       <button
-        v-for="tab in tabs"
+        v-for="tab in visibleTabs"
         :id="`${componentId}-tab-${tab.key}`"
         :key="tab.key"
         role="tab"
@@ -13,7 +83,7 @@
         :aria-selected="activeTab === tab.key"
         :aria-controls="`${componentId}-panel-${tab.key}`"
         :aria-disabled="!!tab.disabled"
-        :tabindex="activeTab === tab.key ? 0 : -1"
+        :tabindex="focusedKey === tab.key ? 0 : -1"
         :disabled="tab.disabled"
         :class="[
           'relative flex items-center gap-[18px] text-[24px] font-[600] transition-colors',
@@ -40,7 +110,8 @@
       :id="`${componentId}-panel-${tab.key}`"
       :key="tab.key"
       role="tabpanel"
-      :aria-labelledby="`${componentId}-tab-${tab.key}`"
+      :aria-labelledby="isTabRendered(tab.key) ? `${componentId}-tab-${tab.key}` : undefined"
+      :aria-label="isTabRendered(tab.key) ? undefined : tab.label"
     >
       <slot :name="tab.key" />
     </div>
@@ -48,7 +119,7 @@
 </template>
 
 <script setup lang="ts">
-import {computed, ref, useId} from 'vue'
+import {computed, ref, useId, watch} from 'vue'
 import {Icon as IconifyIcon} from '@iconify/vue'
 
 defineOptions({name: 'MalioTabList', inheritAttrs: false})
@@ -65,9 +136,13 @@ const props = withDefaults(defineProps<{
   tabs: Tab[]
   modelValue?: string
   id?: string
+  maxVisibleTabs?: number
+  maxWidth?: number
 }>(), {
   modelValue: undefined,
   id: '',
+  maxVisibleTabs: undefined,
+  maxWidth: 1100,
 })
 
 const emit = defineEmits<{
@@ -84,6 +159,53 @@ const activeTab = computed(() =>
   isControlled.value ? props.modelValue! : localValue.value,
 )
 
+const isWindowed = computed(() =>
+  props.maxVisibleTabs != null && props.tabs.length > props.maxVisibleTabs,
+)
+
+const maxStartIndex = computed(() =>
+  isWindowed.value ? Math.max(0, props.tabs.length - props.maxVisibleTabs!) : 0,
+)
+
+const startIndex = ref(0)
+
+const visibleTabs = computed(() =>
+  isWindowed.value
+    ? props.tabs.slice(startIndex.value, startIndex.value + props.maxVisibleTabs!)
+    : props.tabs,
+)
+
+const focusedKey = computed(() => {
+  if (!isWindowed.value) return activeTab.value
+  const inView = visibleTabs.value.some(t => t.key === activeTab.value)
+  return inView ? activeTab.value : (visibleTabs.value[0]?.key ?? '')
+})
+
+const isTabRendered = (key: string) => !isWindowed.value || visibleTabs.value.some(t => t.key === key)
+
+const canPrev = computed(() => isWindowed.value && startIndex.value > 0)
+const canNext = computed(() => isWindowed.value && startIndex.value < maxStartIndex.value)
+
+function prev() {
+  if (!canPrev.value) return
+  startIndex.value -= 1
+}
+
+function next() {
+  if (!canNext.value) return
+  startIndex.value += 1
+}
+
+// Clamp startIndex back in range if tabs or maxVisibleTabs change.
+watch(maxStartIndex, (max) => {
+  if (startIndex.value > max) startIndex.value = max
+})
+
+// Reset the window to the start when the tab list is replaced.
+watch(() => props.tabs, () => {
+  startIndex.value = 0
+})
+
 function selectTab(key: string) {
   const tab = props.tabs.find(t => t.key === key)
   if (tab?.disabled) return