fix(app): prevent desktop combobox initial 0,0 flash

2026-02-16 18:37:04 +07:00
parent f590e60617
commit 427e3daca9
2 changed files with 183 additions and 4 deletions
@@ -0,0 +1,130 @@
+import { test, expect } from "./fixtures";
+import { gotoHome } from "./helpers/app";
+
+test("project filter dropdown never appears visibly at 0,0 on open", async ({ page }) => {
+  await gotoHome(page);
+
+  const trigger = page.getByText("Project", { exact: true }).first();
+  await expect(trigger).toBeVisible();
+
+  await page.evaluate(() => {
+    (window as any).__projectFilterFlashProbe = new Promise<{
+      targetFound: boolean;
+      visibleAtOrigin: boolean;
+      records: Array<{ left: number; top: number; opacity: number }>;
+    }>((resolve) => {
+      let target: HTMLElement | null = null;
+      const records: Array<{ left: number; top: number; opacity: number }> = [];
+
+      const capture = () => {
+        if (!target) return;
+        const style = getComputedStyle(target);
+        records.push({
+          left: Number.parseFloat(style.left || "0"),
+          top: Number.parseFloat(style.top || "0"),
+          opacity: Number.parseFloat(style.opacity || "1"),
+        });
+      };
+
+      const getContainer = (node: HTMLElement): HTMLElement | null => {
+        let current: HTMLElement | null = node;
+        while (current && current !== document.body) {
+          const style = getComputedStyle(current);
+          if (style.position === "absolute" && style.backgroundColor !== "rgba(0, 0, 0, 0)") {
+            return current;
+          }
+          current = current.parentElement;
+        }
+        return null;
+      };
+
+      const tryResolveTarget = (root: HTMLElement) => {
+        const stack = [root, ...Array.from(root.querySelectorAll<HTMLElement>("*"))];
+        for (const element of stack) {
+          if (!element.textContent?.includes("No projects")) continue;
+          const container = getContainer(element);
+          if (!container) continue;
+          target = container;
+          return true;
+        }
+        return false;
+      };
+
+      const finish = () => {
+        observer.disconnect();
+        if (!target) {
+          resolve({
+            targetFound: false,
+            visibleAtOrigin: false,
+            records: [],
+          });
+          return;
+        }
+
+        const visibleAtOrigin = records.some(
+          (entry) => entry.left <= 1 && entry.top <= 1 && entry.opacity > 0.01
+        );
+
+        resolve({
+          targetFound: true,
+          visibleAtOrigin,
+          records,
+        });
+      };
+
+      const sampleFrames = () => {
+        capture();
+        requestAnimationFrame(() => {
+          capture();
+          requestAnimationFrame(() => {
+            capture();
+            requestAnimationFrame(() => {
+              capture();
+              requestAnimationFrame(() => {
+                capture();
+                finish();
+              });
+            });
+          });
+        });
+      };
+
+      const observer = new MutationObserver((mutations) => {
+        for (const mutation of mutations) {
+          for (const added of Array.from(mutation.addedNodes)) {
+            if (!(added instanceof HTMLElement)) continue;
+            if (tryResolveTarget(added)) {
+              sampleFrames();
+              return;
+            }
+          }
+
+          if (
+            mutation.type === "attributes" &&
+            mutation.target instanceof HTMLElement &&
+            !target &&
+            tryResolveTarget(mutation.target)
+          ) {
+            sampleFrames();
+            return;
+          }
+        }
+      });
+
+      observer.observe(document.body, {
+        childList: true,
+        subtree: true,
+        attributes: true,
+        attributeFilter: ["style"],
+      });
+
+      setTimeout(() => finish(), 2500);
+    });
+  });
+
+  await trigger.click();
+  const probe = await page.evaluate(() => (window as any).__projectFilterFlashProbe);
+
+  expect(probe.targetFound).toBe(true);
+  expect(probe.visibleAtOrigin).toBe(false);
+});