After cut & paste, the thumbnail must be correctly rendered (bug 2018162)

src/core/document.js

@@ -128,11 +128,14 @@ class Page {
     };
   }
 
-  #createPartialEvaluator(handler) {
+  #createPartialEvaluator(handler, pageIndex = this.pageIndex) {
+    // The pageIndex is used to identify the page some objects (like images)
+    // belong to.
+
     return new PartialEvaluator({
       xref: this.xref,
       handler,
-      pageIndex: this.pageIndex,
+      pageIndex,
       idFactory: this._localIdFactory,
       fontCache: this.fontCache,
       builtInCMapCache: this.builtInCMapCache,
@@ -463,7 +466,6 @@ class Page {
     task,
     intent,
     cacheKey,
-    pageId = this.pageIndex,
     pageIndex = this.pageIndex,
     annotationStorage = null,
     modifiedIds = null,
@@ -471,7 +473,7 @@ class Page {
     const contentStreamPromise = this.getContentStream();
     const resourcesPromise = this.loadResources(RESOURCES_KEYS_OPERATOR_LIST);
 
-    const partialEvaluator = this.#createPartialEvaluator(handler);
+    const partialEvaluator = this.#createPartialEvaluator(handler, pageIndex);
 
     const newAnnotsByPage = !this.xfaFactory
       ? getNewAnnotationsMap(annotationStorage)

test/integration/reorganize_pages_spec.mjs

@@ -984,4 +984,60 @@ describe("Reorganize Pages View", () => {
       );
     });
   });
+
+  describe("Thumbnails are not blank after cut/paste (bug 2018162)", () => {
+    let pages;
+
+    beforeEach(async () => {
+      pages = await loadAndWait(
+        "two_pages.pdf",
+        "#viewsManagerToggleButton",
+        "page-fit",
+        null,
+        { enableSplitMerge: true }
+      );
+    });
+
+    afterEach(async () => {
+      await closePages(pages);
+    });
+
+    it("should check that the thumbnail has a blob src after cut and paste", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await waitForThumbnailVisible(page, 1);
+          await page.waitForSelector("#viewsManagerStatusActionButton", {
+            visible: true,
+          });
+          await waitAndClick(
+            page,
+            `.thumbnail:has(${getThumbnailSelector(1)}) input`
+          );
+
+          for (let i = 1; i <= 2; i++) {
+            await page.waitForSelector(
+              `${getThumbnailSelector(i)} > img[src^="blob:http:"]`,
+              { visible: true }
+            );
+          }
+
+          let handlePagesEdited = await waitForPagesEdited(page, "cut");
+          await waitAndClick(page, "#viewsManagerStatusActionButton");
+          await waitAndClick(page, "#viewsManagerStatusActionCut");
+          await awaitPromise(handlePagesEdited);
+
+          handlePagesEdited = await waitForPagesEdited(page);
+          await waitAndClick(page, `${getThumbnailSelector(1)}+button`);
+          await awaitPromise(handlePagesEdited);
+
+          for (let i = 1; i <= 2; i++) {
+            await page.waitForSelector(
+              `${getThumbnailSelector(i)} > img[src^="blob:http:"]`,
+              { visible: true }
+            );
+          }
+        })
+      );
+    });
+  });
 });

test/integration/thumbnail_view_spec.mjs

@@ -52,10 +52,9 @@ describe("PDF Thumbnail View", () => {
 
           await waitForThumbnailVisible(page, 1);
 
-          const src = await page.$eval(thumbSelector, el => el.src);
-          expect(src)
-            .withContext(`In ${browserName}`)
-            .toMatch(/^blob:http:/);
+          await page.waitForSelector(`${thumbSelector}[src^="blob:http:"]`, {
+            visible: true,
+          });
         })
       );
     });
@@ -116,13 +115,12 @@ describe("PDF Thumbnail View", () => {
               `.thumbnail ${thumbSelector}[aria-current="page"]`,
               { visible: true }
             );
-            const src = await page.$eval(
-              `${thumbSelector} > img`,
-              el => el.src
+            await page.waitForSelector(
+              `${thumbSelector} > img[src^="blob:http:"]`,
+              {
+                visible: true,
+              }
             );
-            expect(src)
-              .withContext(`In ${browserName}`)
-              .toMatch(/^blob:http:/);
           }
         })
       );

test/pdfs/.gitignore

@@ -873,3 +873,4 @@
 !Brotli-Prototype-FileA.pdf
 !bug2013793.pdf
 !bug2014080.pdf
+!two_pages.pdf