Correctly focus the pasted page (bug 2022516)

Author: calixteman

test/integration/reorganize_pages_spec.mjs

@@ -1267,6 +1267,68 @@ describe("Reorganize Pages View", () => {
         })
       );
     });
+
+    it("should focus the newly pasted page after copy and paste (bug 2022516)", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await waitForThumbnailVisible(page, 1);
+          await page.waitForSelector("#viewsManagerStatusActionButton", {
+            visible: true,
+          });
+
+          // Select page 1 and copy it.
+          await waitAndClick(
+            page,
+            `.thumbnail:has(${getThumbnailSelector(1)}) input`
+          );
+          let handlePagesEdited = await waitForPagesEdited(page, "copy");
+          await waitAndClick(page, "#viewsManagerStatusActionButton");
+          await waitAndClick(page, "#viewsManagerStatusActionCopy");
+          await awaitPromise(handlePagesEdited);
+
+          // Paste after page 3: the pasted page lands at position 4.
+          handlePagesEdited = await waitForPagesEdited(page);
+          await waitAndClick(page, `${getThumbnailSelector(3)}+button`);
+          await awaitPromise(handlePagesEdited);
+
+          // Focus must be on the newly pasted page (position 4), not page 1.
+          await page.waitForSelector(`${getThumbnailSelector(4)}:focus`, {
+            visible: true,
+          });
+        })
+      );
+    });
+
+    it("should focus the newly pasted page after cut and paste (bug 2022516)", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await waitForThumbnailVisible(page, 1);
+          await page.waitForSelector("#viewsManagerStatusActionButton", {
+            visible: true,
+          });
+
+          // Select page 3 and cut it.
+          await waitAndClick(
+            page,
+            `.thumbnail:has(${getThumbnailSelector(3)}) input`
+          );
+          let handlePagesEdited = await waitForPagesEdited(page, "cut");
+          await waitAndClick(page, "#viewsManagerStatusActionButton");
+          await waitAndClick(page, "#viewsManagerStatusActionCut");
+          await awaitPromise(handlePagesEdited);
+
+          // Paste after page 1: the pasted page lands at position 2.
+          handlePagesEdited = await waitForPagesEdited(page);
+          await waitAndClick(page, `${getThumbnailSelector(1)}+button`);
+          await awaitPromise(handlePagesEdited);
+
+          // Focus must be on the newly pasted page (position 2), not page 1.
+          await page.waitForSelector(`${getThumbnailSelector(2)}:focus`, {
+            visible: true,
+          });
+        })
+      );
+    });
   });
 
   describe("Status label reflects number of checked thumbnails (bug 2010832)", () => {

web/pdf_thumbnail_viewer.js

@@ -729,13 +729,13 @@ class PDFThumbnailViewer {
     this.#selectedPages.clear();
   }
 
-  #updateCurrentPage(currentPageNumber) {
+  #updateCurrentPage(currentPageNumber, forceFocus = false) {
     setTimeout(() => {
       this.forceRendering();
       const newPageNumber = currentPageNumber || 1;
       this.linkService.goToPage(newPageNumber);
       const thumbnailView = this._thumbnails[newPageNumber - 1];
-      if (!this.container.contains(document.activeElement)) {
+      if (forceFocus || !this.container.contains(document.activeElement)) {
         thumbnailView.imageContainer.focus();
       }
     }, 0);
@@ -883,7 +883,8 @@ class PDFThumbnailViewer {
       : this._currentPageNumber;
 
     pagesMapper.pastePages(index);
-    this.#updateCurrentPage(this.#updateThumbnails(currentPageNumber));
+    this.#updateThumbnails(currentPageNumber);
+    this.#updateCurrentPage(index + 1, /* forceFocus = */ true);
     this.#computeThumbnailsPosition();
 
     this.eventBus.dispatch("pagesedited", {