Webui: Disable attachment button and model selector button when prompt textbox is disabled. (#17925)

* Pass disabled state to the file attachments button and the model
selector button.

* Update index.html.gz

* Fix model info card in non-router mode.

* Update index.html.gz

tools/server/webui/src/lib/components/app/chat/ChatForm/ChatFormActions/ChatFormActionFileAttachments.svelte

@@ -35,7 +35,7 @@
 
 <div class="flex items-center gap-1 {className}">
 	<DropdownMenu.Root>
-		<DropdownMenu.Trigger name="Attach files">
+		<DropdownMenu.Trigger name="Attach files" {disabled}>
 			<Tooltip.Root>
 				<Tooltip.Trigger>
 					<Button

tools/server/webui/src/lib/components/app/chat/ChatForm/ChatFormActions/ChatFormActions.svelte

@@ -173,6 +173,7 @@
 	/>
 
 	<ModelsSelector
+		{disabled}
 		bind:this={selectorModelRef}
 		currentModel={conversationModel}
 		forceForegroundText={true}

tools/server/webui/src/lib/components/app/models/ModelsSelector.svelte

@@ -179,9 +179,12 @@
 		});
 	});
 
+	// Handle changes to the model selector pop-down or the model dialog, depending on if the server is in
+	// router mode or not.
 	function handleOpenChange(open: boolean) {
 		if (loading || updating) return;
 
+		if (isRouter) {
 			if (open) {
 				isOpen = true;
 				searchTerm = '';
@@ -192,38 +195,21 @@
 					requestAnimationFrame(() => searchInputRef?.focus());
 				});
 
-			if (isRouter) {
 				modelsStore.fetchRouterModels().then(() => {
 					modelsStore.fetchModalitiesForLoadedModels();
 				});
-			}
 			} else {
 				isOpen = false;
 				searchTerm = '';
 				highlightedIndex = -1;
 			}
+		} else {
+			showModelDialog = open;
 		}
-
-	function handleTriggerClick() {
-		if (loading || updating) return;
-
-		if (!isRouter) {
-			// Single model mode: show dialog instead of popover
-			showModelDialog = true;
-		}
-		// For router mode, the Popover handles open/close
 	}
 
 	export function open() {
-		if (isRouter) {
 		handleOpenChange(true);
-		} else {
-			showModelDialog = true;
-		}
-	}
-
-	function closeMenu() {
-		handleOpenChange(false);
 	}
 
 	function handleSearchKeyDown(event: KeyboardEvent) {
@@ -292,7 +278,7 @@
 		}
 
 		if (shouldCloseMenu) {
-			closeMenu();
+			handleOpenChange(false);
 
 			// Focus the chat textarea after model selection
 			requestAnimationFrame(() => {
@@ -360,6 +346,7 @@
 	{:else}
 		{@const selectedOption = getDisplayOption()}
 
+		{#if isRouter}
 			<Popover.Root bind:open={isOpen} onOpenChange={handleOpenChange}>
 				<Popover.Trigger
 					class={cn(
@@ -374,8 +361,7 @@
 						isOpen ? 'text-foreground' : ''
 					)}
 					style="max-width: min(calc(100cqw - 6.5rem), 32rem)"
-				onclick={handleTriggerClick}
-				disabled={disabled || updating || !isRouter}
+					disabled={disabled || updating}
 				>
 					<Package class="h-3.5 w-3.5" />
 
@@ -385,7 +371,7 @@
 
 					{#if updating}
 						<Loader2 class="h-3 w-3.5 animate-spin" />
-				{:else if isRouter}
+					{:else}
 						<ChevronDown class="h-3 w-3.5" />
 					{/if}
 				</Popover.Trigger>
@@ -405,7 +391,7 @@
 								placeholder="Search models..."
 								bind:value={searchTerm}
 								bind:ref={searchInputRef}
-							onClose={closeMenu}
+								onClose={() => handleOpenChange(false)}
 								onKeyDown={handleSearchKeyDown}
 							/>
 						</div>
@@ -533,6 +519,34 @@
 					</div>
 				</Popover.Content>
 			</Popover.Root>
+		{:else}
+			<button
+				class={cn(
+					`inline-flex cursor-pointer items-center gap-1.5 rounded-sm bg-muted-foreground/10 px-1.5 py-1 text-xs transition hover:text-foreground focus:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-60`,
+					!isCurrentModelInCache()
+						? 'bg-red-400/10 !text-red-400 hover:bg-red-400/20 hover:text-red-400'
+						: forceForegroundText
+							? 'text-foreground'
+							: isHighlightedCurrentModelActive
+								? 'text-foreground'
+								: 'text-muted-foreground',
+					isOpen ? 'text-foreground' : ''
+				)}
+				style="max-width: min(calc(100cqw - 6.5rem), 32rem)"
+				onclick={() => handleOpenChange(true)}
+				disabled={disabled || updating}
+			>
+				<Package class="h-3.5 w-3.5" />
+
+				<span class="truncate font-medium">
+					{selectedOption?.model}
+				</span>
+
+				{#if updating}
+					<Loader2 class="h-3 w-3.5 animate-spin" />
+				{/if}
+			</button>
+		{/if}
 	{/if}
 </div>