feat: show confirm when deleting project

app/src/lib/project-manager/ProjectManager.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
   import { defaultPlant, lottaFaces, plant, simple } from '$lib/graph-templates';
   import type { Graph } from '$lib/types';
-  import { InputSelect } from '@nodarium/ui';
+  import { Button, ConfirmDialog, InputSelect, Spinner } from '@nodarium/ui';
   import type { ProjectManager } from './project-manager.svelte';
 
   const { projectManager } = $props<{ projectManager: ProjectManager }>();
@@ -31,16 +31,27 @@
     newProjectName = '';
     showNewProject = false;
   }
+
+  let pendingDeleteId = $state<number | null>(null);
+  let confirmOpen = $state(false);
+
+  function requestDelete(id: number, e: MouseEvent) {
+    e.stopPropagation();
+    pendingDeleteId = id;
+    confirmOpen = true;
+  }
+
+  function confirmDelete() {
+    if (pendingDeleteId !== null) {
+      projectManager.handleDeleteProject(pendingDeleteId);
+      pendingDeleteId = null;
+    }
+  }
 </script>
 
 <header class="flex justify-between px-4 h-[70px] border-b-1 border-outline items-center bg-layer-2">
   <h3>Project</h3>
-  <button
-    class="px-3 py-1 bg-layer-1 rounded"
-    onclick={() => (showNewProject = !showNewProject)}
-  >
-    New
-  </button>
+  <Button onclick={() => (showNewProject = !showNewProject)}>New</Button>
 </header>
 
 {#if showNewProject}
@@ -53,20 +64,11 @@
       onkeydown={(e) => e.key === 'Enter' && handleCreate()}
     />
     <InputSelect options={templates.map(t => t.name)} bind:value={selectedTemplateIndex} />
-    <button
-      class="cursor-pointer self-end px-3 py-1 bg-selected rounded"
-      onclick={() => handleCreate()}
-    >
-      Create
-    </button>
+    <Button variant="primary" class="self-end" onclick={() => handleCreate()}>Create</Button>
   </div>
 {/if}
 
 <div class="text-white min-h-screen">
-  {#if projectManager.loading}
-    <p>Loading...</p>
-  {/if}
-
   <ul>
     {#each projectManager.projects as project (project.id)}
       <li>
@@ -89,16 +91,35 @@
           <div class="flex justify-between items-center grow">
             <span>{project.meta?.title || 'Untitled'}</span>
             <button
-              class="text-layer-1! bg-red-500 w-7 text-xl rounded-sm cursor-pointer opacity-20 hover:opacity-80"
-              onclick={() => {
-                projectManager.handleDeleteProject(project.id!);
-              }}
+              class="opacity-20 hover:opacity-70 transition-opacity cursor-pointer p-1 rounded text-red-400"
+              onclick={(e) => requestDelete(project.id!, e)}
+              aria-label="Delete project"
             >
-              ×
+              <span class="i-[tabler--trash] w-4 h-4 block"></span>
             </button>
           </div>
         </div>
       </li>
+    {:else}
+      {#if projectManager.loading}
+        <div class="flex items-center gap-2 p-4">
+          <Spinner size={12} />
+          <p>Loading</p>
+        </div>
+      {:else}
+        <li class="px-4 py-8 text-center opacity-40 text-sm">
+          No projects yet.<br />Press <b>New</b> to create one.
+        </li>
+      {/if}
     {/each}
   </ul>
 </div>
+
+<ConfirmDialog
+  bind:open={confirmOpen}
+  title="Delete project?"
+  message="This cannot be undone. The project and all its data will be permanently removed."
+  confirmLabel="Delete"
+  cancelLabel="Cancel"
+  onconfirm={confirmDelete}
+/>

app/src/lib/project-manager/project-manager.svelte.ts

@@ -10,7 +10,9 @@ export class ProjectManager {
     'node.activeProjectId',
     undefined
   );
-  public readonly loading = $derived(this.graph?.id !== this.activeProjectId.value);
+  public readonly loading = $derived(
+    this.projects.length && this.graph?.id !== this.activeProjectId.value
+  );
 
   constructor() {
     this.init();

packages/ui/src/lib/ConfirmDialog.svelte

@@ -0,0 +1,91 @@
+<script lang="ts">
+  import type { Snippet } from 'svelte';
+  import Button from './Button.svelte';
+
+  interface Props {
+    open?: boolean;
+    title?: string;
+    message?: string;
+    confirmLabel?: string;
+    cancelLabel?: string;
+    onconfirm?: () => void;
+    oncancel?: () => void;
+    children?: Snippet;
+  }
+
+  let {
+    open = $bindable(false),
+    title = 'Are you sure?',
+    message,
+    confirmLabel = 'Confirm',
+    cancelLabel = 'Cancel',
+    onconfirm,
+    oncancel,
+    children
+  }: Props = $props();
+
+  let dialogEl: HTMLDialogElement;
+
+  $effect(() => {
+    if (!dialogEl) return;
+    if (open) {
+      dialogEl.showModal();
+    } else {
+      dialogEl.close();
+    }
+  });
+
+  function confirm() {
+    open = false;
+    onconfirm?.();
+  }
+
+  function cancel() {
+    open = false;
+    oncancel?.();
+  }
+
+  function handleKeydown(e: KeyboardEvent) {
+    if (e.key === 'Enter') { e.preventDefault(); confirm(); }
+  }
+
+  function handleCancel(e: Event) {
+    e.preventDefault();
+    cancel();
+  }
+</script>
+
+<!-- svelte-ignore a11y_interactive_supports_focus -->
+<dialog
+  bind:this={dialogEl}
+  class="m-auto bg-layer-1 border border-outline rounded-md p-0 text-text max-w-md w-full backdrop:bg-black/50"
+  oncancel={handleCancel}
+  onkeydown={handleKeydown}
+  onclick={(e) => { if (e.target === dialogEl) cancel(); }}
+>
+  <div class="px-6 py-5 flex flex-col gap-3">
+    <h3 class="m-0 text-sm font-semibold">{title}</h3>
+    {#if message}
+      <p class="m-0 text-xs opacity-75 leading-relaxed">{message}</p>
+    {/if}
+    {#if children}
+      <div class="text-xs">
+        {@render children()}
+      </div>
+    {/if}
+    <div class="flex justify-end gap-2 mt-1">
+      <Button onclick={cancel}>{cancelLabel}</Button>
+      <Button variant="primary" onclick={confirm}>{confirmLabel}</Button>
+    </div>
+  </div>
+</dialog>
+
+<style>
+  dialog {
+    font-family: var(--font-family);
+  }
+
+  dialog::backdrop {
+    background: rgba(0, 0, 0, 0.5);
+  }
+</style>