Avoid to be blocked when searching after a page move (bug 2023150)

Author: calixteman

test/integration/reorganize_pages_spec.mjs

@@ -450,6 +450,49 @@ describe("Reorganize Pages View", () => {
       );
     });
 
+    it("should check that find navigation is not blocked after moving pages (bug 2023150)", async () => {
+      await Promise.all(
+        pages.map(async ([browserName, page]) => {
+          await waitAndClick(page, "#viewFindButton");
+          await page.waitForSelector("#findInput", { visible: true });
+          await page.type("#findInput", "1");
+          await page.keyboard.press("Enter");
+
+          // Wait for the first result to be selected and the search to settle.
+          await page.waitForSelector("#findInput[data-status='']");
+          let resultEl = await page.waitForSelector("#findResultsCount");
+          const firstResult = await resultEl.evaluate(el => el.textContent);
+          expect(firstResult)
+            .withContext(`In ${browserName}`)
+            .toEqual(`${FSI}1${PDI} of ${FSI}10${PDI} matches`);
+
+          // Navigate to the next match.
+          await page.keyboard.press("Enter");
+          await page.waitForSelector("#findInput[data-status='']");
+          resultEl = await page.waitForSelector("#findResultsCount");
+          const secondResult = await resultEl.evaluate(el => el.textContent);
+          expect(secondResult)
+            .withContext(`In ${browserName}`)
+            .toEqual(`${FSI}2${PDI} of ${FSI}10${PDI} matches`);
+
+          // Move a page: this previously blocked subsequent find navigation.
+          await movePages(page, [3], 0);
+
+          // Wait for the search to re-run after the page move.
+          await page.waitForSelector("#findInput[data-status='']");
+
+          // Navigate to the next match — must not be blocked.
+          await page.keyboard.press("Enter");
+          await page.waitForSelector("#findInput[data-status='']");
+          resultEl = await page.waitForSelector("#findResultsCount");
+          const resultAfterMove = await resultEl.evaluate(el => el.textContent);
+          expect(resultAfterMove)
+            .withContext(`In ${browserName}`)
+            .not.toEqual(secondResult);
+        })
+      );
+    });
+
     it("should check if the search is working after copy and paste (bug 2023150)", async () => {
       await Promise.all(
         pages.map(async ([browserName, page]) => {

web/pdf_find_controller.js

@@ -1168,7 +1168,14 @@ class PDFFindController {
       return;
     }
 
-    this.#onFindBarClose();
+    // Cancel any pending find timeout and clear a pending resume page index
+    // synchronously. Calling #onFindBarClose() here would schedule its cleanup
+    // asynchronously.
+    if (this._findTimeout) {
+      clearTimeout(this._findTimeout);
+      this._findTimeout = null;
+    }
+    this._resumePageIdx = null;
     this._dirtyMatch = true;
     const prevPromises = this._extractTextPromises;
     const prevContents = this._pageContents;
@@ -1198,11 +1205,7 @@ class PDFFindController {
       hasDiacritics.push(prevDiacritics[prevPageNumber - 1] ?? false);
     }
     if (this.#state) {
-      this._eventBus.dispatch("find", {
-        source: this,
-        type: "",
-        ...this.#state,
-      });
+      this.#nextMatch();
     }
   }