Merge pull request #15466 from itk-dev/feature/accessibility-dropdown-model-selector

Feat: accessibility in dropdown model selector

src/lib/components/chat/ModelSelector.svelte

@@ -49,7 +49,7 @@
 	{#each selectedModels as selectedModel, selectedModelIdx}
 		<div class="flex w-full max-w-fit">
 			<div class="overflow-hidden w-full">
-				<div class="mr-1 max-w-full">
+				<div class="max-w-full {($settings?.highContrastMode ?? false) ? 'm-1' : 'mr-1'}">
 					<Selector
 						id={`${selectedModelIdx}`}
 						placeholder={$i18n.t('Select a model')}

src/lib/components/chat/ModelSelector/Selector.svelte

@@ -346,12 +346,17 @@
 	closeFocus={false}
 >
 	<DropdownMenu.Trigger
-		class="relative w-full font-primary"
+		class="relative w-full font-primary {($settings?.highContrastMode ?? false)
+			? ''
+			: 'outline-hidden focus:outline-hidden'}"
 		aria-label={placeholder}
 		id="model-selector-{id}-button"
 	>
-		<button
-			class="flex w-full text-left px-0.5 outline-hidden bg-transparent truncate {triggerClassName} justify-between font-medium placeholder-gray-400 focus:outline-hidden"
+		<div
+			class="flex w-full text-left px-0.5 bg-transparent truncate {triggerClassName} justify-between font-medium {($settings?.highContrastMode ??
+			false)
+				? 'dark:placeholder-gray-100 placeholder-gray-800'
+				: 'placeholder-gray-400'}"
 			on:mouseenter={async () => {
 				models.set(
 					await getModels(
@@ -360,7 +365,6 @@
 					)
 				);
 			}}
-			type="button"
 		>
 			{#if selectedModel}
 				{selectedModel.label}
@@ -368,7 +372,7 @@
 				{placeholder}
 			{/if}
 			<ChevronDown className=" self-center ml-2 size-3" strokeWidth="2.5" />
-		</button>
+		</div>
 	</DropdownMenu.Trigger>
 
 	<DropdownMenu.Content

src/lib/components/icons/ChevronDown.svelte

@@ -10,6 +10,7 @@
 	stroke-width={strokeWidth}
 	stroke="currentColor"
 	class={className}
+	aria-hidden="true"
 >
 	<path stroke-linecap="round" stroke-linejoin="round" d="m19.5 8.25-7.5 7.5-7.5-7.5" />
 </svg>