particle library

test/sound-library.test.js

@@ -11,7 +11,7 @@ function harness() {
     .replace('  Plugin.register(PLUGIN_ID, {', `
       globalThis.api = { loadSoundLibrary, resolveSoundAudio, mapAnimationSounds,
         applyLibrarySound, compileConjoinedStage, showSoundLibrary, SOUND_SOURCE_KEY, SOUND_PREVIEW_PROPERTY,
-        installFiguraSoundCompat, beginFiguraSoundPlayback, removeFiguraSoundCompat, isBrokenFiguraSoundWrapper };
+        installFiguraSoundCompat, beginFiguraSoundPlayback, removeFiguraSoundCompat, isBrokenFiguraSoundWrapper, refreshSoundLibraryPanel };
       Plugin.register(PLUGIN_ID, {`);
   class EffectAnimator {
     constructor(animation) { this.animation = animation; this.sound = []; }
@@ -69,6 +69,33 @@ function assets(t, json, files = {}) {
   return root;
 }
 
+test('keyframe sound library button only appears for sound selections', () => {
+  const h = harness(), elements = new Map();
+  const id = 'animationdirector_sound_library_button';
+  elements.set('panel_keyframe', { appendChild(button) { elements.set(button.id, button); } });
+  h.context.Blockbench = { isWeb: false };
+  h.context.document = {
+    getElementById(id) { return elements.get(id); },
+    createElement() { return { style: {}, addEventListener() {}, remove() { elements.delete(this.id); } }; },
+  };
+  for (const channel of ['particle', 'rotation', null, 'sound', 'particle', 'sound']) {
+    h.context.Timeline.selected = channel ? [{ channel }] : [];
+    h.refreshSoundLibraryPanel();
+    assert.equal(elements.has(id), channel === 'sound', `Button visibility for ${channel}`);
+  }
+  h.context.Timeline.selected.push({ channel: 'particle' });
+  h.refreshSoundLibraryPanel();
+  assert.equal(elements.has(id), false, 'Mixed selections do not show sound-only controls');
+  h.context.Timeline.selected = [{ channel: 'sound' }];
+  h.refreshSoundLibraryPanel();
+  const first = elements.get(id);
+  h.refreshSoundLibraryPanel();
+  assert.equal(elements.get(id), first, 'Refreshing does not duplicate the button');
+  h.context.Blockbench.isWeb = true;
+  h.refreshSoundLibraryPanel();
+  assert.equal(elements.has(id), false, 'Desktop-only controls remain hidden in browsers');
+});
+
 test('sound library reads the real NoN sound registry, lazily maps semantic cues and caches audio', () => {
   const h = harness();
   h.storage.set(h.SOUND_SOURCE_KEY, path.resolve(__dirname, '../../NON/src/main/resources'));