Ends the current drawing session when closing the tab (bug 2015385)

src/display/editor/tools.js

@@ -963,6 +963,10 @@ class AnnotationEditorUIManager {
       },
       { capture: true, signal }
     );
+    window.addEventListener("beforeunload", this.#beforeUnload.bind(this), {
+      capture: true,
+      signal,
+    });
     this.#addSelectionListener();
     this.#addDragAndDropListeners();
     this.#addKeyboardManager();
@@ -1398,6 +1402,11 @@ class AnnotationEditorUIManager {
     this.highlightSelection(methodOfCreation, /* comment */ true);
   }
 
+  #beforeUnload(e) {
+    this.commitOrRemove();
+    this.currentLayer?.endDrawingSession(/* isAborted = */ false);
+  }
+
   #displayFloatingToolbar() {
     const selection = document.getSelection();
     if (!selection || selection.isCollapsed) {

test/integration/ink_editor_spec.mjs

@@ -17,6 +17,7 @@ import {
   awaitPromise,
   clearEditors,
   closePages,
+  countStorageEntries,
   dragAndDrop,
   getAnnotationSelector,
   getEditors,
@@ -1236,3 +1237,43 @@ describe("Ink must update its color", () => {
     );
   });
 });
+
+describe("Ink must committed when leaving the tab", () => {
+  let pages;
+
+  beforeEach(async () => {
+    pages = await loadAndWait("empty.pdf", ".annotationEditorLayer");
+  });
+
+  afterEach(async () => {
+    await closePages(pages);
+  });
+
+  it("must check that the annotation storage is updated when leaving the tab", async () => {
+    await Promise.all(
+      pages.map(async ([browserName, page]) => {
+        await switchToInk(page);
+
+        const rect = await getRect(page, ".annotationEditorLayer");
+
+        const x = rect.x + 20;
+        const y = rect.y + 20;
+        await drawLine(page, x, y, x + 50, y + 50);
+
+        const count = await countStorageEntries(page);
+        expect(count).withContext(`In ${browserName}`).toEqual(0);
+
+        // Trigger the beforeunload event to force auto-commit
+        await page.evaluate(() => {
+          window.dispatchEvent(new Event("beforeunload"));
+        });
+
+        // Wait for the annotation to be committed to storage
+        await waitForStorageEntries(page, 1);
+
+        const countAfter = await countStorageEntries(page);
+        expect(countAfter).withContext(`In ${browserName}`).toEqual(1);
+      })
+    );
+  });
+});