fix: don't restore maximized BrowserWindow when calling showInactive (#32870)

patches/chromium/.patches

@@ -111,3 +111,4 @@ fix_aspect_ratio_with_max_size.patch
 fix_dont_delete_SerialPortManager_on_main_thread.patch
 feat_add_data_transfer_to_requestsingleinstancelock.patch
 fix_crash_when_saving_edited_pdf_files.patch
+fix_don_t_restore_maximized_windows_when_calling_showinactive.patch

patches/chromium/fix_don_t_restore_maximized_windows_when_calling_showinactive.patch

@@ -0,0 +1,42 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: David Sanders <dsanders11@ucsbalum.com>
+Date: Fri, 11 Feb 2022 22:37:39 +0000
+Subject: fix: don't restore maximized windows when calling ShowInactive
+
+This is a backport from Chromium of
+https://chromium-review.googlesource.com/c/chromium/src/+/3371573.
+
+diff --git a/ui/views/win/hwnd_message_handler.cc b/ui/views/win/hwnd_message_handler.cc
+index 067861bb743ee2f3c1916794d45efb7dd591b230..6507557bf5a47492343602607e0dbb7d8f88246d 100644
+--- a/ui/views/win/hwnd_message_handler.cc
++++ b/ui/views/win/hwnd_message_handler.cc
+@@ -664,9 +664,16 @@ void HWNDMessageHandler::Show(ui::WindowShowState show_state,
+     SetWindowPlacement(hwnd(), &placement);
+     native_show_state = SW_SHOWMAXIMIZED;
+   } else {
++    const bool is_maximized = IsMaximized();
++
++    // Use SW_SHOW/SW_SHOWNA instead of SW_SHOWNORMAL/SW_SHOWNOACTIVATE so that
++    // the window is not restored to its original position if it is maximized.
++    // This could be used unconditionally for ui::SHOW_STATE_INACTIVE, but
++    // cross-platform behavior when showing a minimized window is inconsistent,
++    // some platforms restore the position, some do not. See crbug.com/1296710
+     switch (show_state) {
+       case ui::SHOW_STATE_INACTIVE:
+-        native_show_state = SW_SHOWNOACTIVATE;
++        native_show_state = is_maximized ? SW_SHOWNA : SW_SHOWNOACTIVATE;
+         break;
+       case ui::SHOW_STATE_MAXIMIZED:
+         native_show_state = SW_SHOWMAXIMIZED;
+@@ -677,9 +684,9 @@ void HWNDMessageHandler::Show(ui::WindowShowState show_state,
+       case ui::SHOW_STATE_NORMAL:
+         if ((GetWindowLong(hwnd(), GWL_EXSTYLE) & WS_EX_TRANSPARENT) ||
+             (GetWindowLong(hwnd(), GWL_EXSTYLE) & WS_EX_NOACTIVATE)) {
+-          native_show_state = SW_SHOWNOACTIVATE;
++          native_show_state = is_maximized ? SW_SHOWNA : SW_SHOWNOACTIVATE;
+         } else {
+-          native_show_state = SW_SHOWNORMAL;
++          native_show_state = is_maximized ? SW_SHOW : SW_SHOWNORMAL;
+         }
+         break;
+       case ui::SHOW_STATE_FULLSCREEN:

spec-main/api-browser-window-spec.ts

@@ -735,6 +735,22 @@ describe('BrowserWindow module', () => {
         w.showInactive();
         expect(w.isFocused()).to.equal(false);
       });
+
+      // TODO(dsanders11): Enable for Linux once CI plays nice with these kinds of tests
+      ifit(process.platform !== 'linux')('should not restore maximized windows', async () => {
+        const maximize = emittedOnce(w, 'maximize');
+        const shown = emittedOnce(w, 'show');
+        w.maximize();
+        // TODO(dsanders11): The maximize event isn't firing on macOS for a window initially hidden
+        if (process.platform !== 'darwin') {
+          await maximize;
+        } else {
+          await delay(1000);
+        }
+        w.showInactive();
+        await shown;
+        expect(w.isMaximized()).to.equal(true);
+      });
     });
 
     describe('BrowserWindow.focus()', () => {