IJPL-207199 Popups are shown on top of other windows

In Wayland, focus transfer between windows is not "atomic": indeterminate amount of time can pass between focus lost and gain, and the corresponding even would have null for the 'opposite window' property. When a popup is shown, the keyboard focus remains on the parent window.
 So if a popup is shown as a top-level window, make sure it is NOT canceled on window deactivation.
The existing cancellation logic remains valid for regular popups, however.

GitOrigin-RevId: fd55354e5b3930736c4b7f3442d91d9f96506bd1

platform/lang-impl/src/com/intellij/ide/actions/searcheverywhere/SearchEverywhereManagerImpl.java

@@ -106,6 +106,7 @@ public final class SearchEverywhereManagerImpl implements SearchEverywhereManage
       .setProject(myProject)
       .setModalContext(false)
       .setNormalWindowLevel(StartupUiUtil.isWaylandToolkit())
+      .setCancelOnWindowDeactivation(!StartupUiUtil.isWaylandToolkit())
       .setCancelOnClickOutside(true)
       .setRequestFocus(true)
       .setCancelKeyEnabled(false)

platform/platform-impl/src/com/intellij/ide/IdePopupManager.java

@@ -45,19 +45,6 @@ public final class IdePopupManager implements IdeEventQueue.EventDispatcher {
         return false;
       }
 
-      if (StartupUiUtil.isWaylandToolkit()) {
-        // Reasons for skipping 'focus lost'-like events on Wayland:
-        // - When a new popup window appears, the main frame looses focus, but the "opposite window"
-        //   for that event is null (because Wayland); this can be solved by waiting a bit
-        //   (several hundreds ms) for
-        //   KeyboardFocusManager.getCurrentKeyboardFocusManager().getFocusedWindow()
-        //   to become non-null.
-        // - When a (popup) window is dragged, it also looses focus (because Wayland); this one is
-        //   not solvable because there's no guarantee that the focus will get back, nor is there
-        //   a notification that the drag is actually happening.
-        return false;
-      }
-
       if (!isPopupActive()) return false;
 
       Window sourceWindow = ((WindowEvent)e).getWindow();

platform/platform-impl/src/com/intellij/ide/actions/Switcher.kt

@@ -359,7 +359,7 @@ object Switcher : BaseSwitcherAction(null) {
         .setModalContext(false)
         .setFocusable(true)
         .setRequestFocus(true)
-        .setCancelOnWindowDeactivation(true)
+        .setCancelOnWindowDeactivation(!pinned || !StartupUiUtil.isWaylandToolkit())
         .setCancelOnOtherWindowOpen(true)
         .setMovable(pinned)
         .setDimensionServiceKey(if (pinned) project else null, if (pinned) "SwitcherDM" else null, false)

platform/recentFiles/frontend/src/com/intellij/platform/recentFiles/frontend/Switcher.kt

@@ -394,7 +394,7 @@ object Switcher : BaseSwitcherAction(null), ActionRemoteBehaviorSpecification.Fr
         .setModalContext(false)
         .setFocusable(true)
         .setRequestFocus(true)
-        .setCancelOnWindowDeactivation(true)
+        .setCancelOnWindowDeactivation(!pinned || !StartupUiUtil.isWaylandToolkit())
         .setCancelOnOtherWindowOpen(true)
         .setMovable(pinned)
         .setDimensionServiceKey(if (pinned) project else null, if (pinned) "SwitcherDM" else null, false)

platform/searchEverywhere/frontend/src/SeFrontendService.kt

@@ -214,6 +214,7 @@ class SeFrontendService(val project: Project?, private val coroutineScope: Corou
       .setProject(project)
       .setModalContext(false)
       .setNormalWindowLevel(StartupUiUtil.isWaylandToolkit())
+      .setCancelOnWindowDeactivation(!StartupUiUtil.isWaylandToolkit())
       .setCancelOnClickOutside(true)
       .setRequestFocus(true)
       .setCancelKeyEnabled(false)