fix: don't show ui on fast trigger

alt-tab-macos/ui/App.swift

@@ -93,7 +93,7 @@ class App: NSApplication, NSApplicationDelegate, NSWindowDelegate {
             Windows.focusedWindowIndex = 0
             Windows.cycleFocusedWindowIndex(step)
             refreshOpenUi()
-            thumbnailsPanel?.show()
+            if uiWorkShouldBeDone { thumbnailsPanel?.show() }
         } else {
             debugPrint("showUiOrCycleSelection: !isFirstSummon")
             cycleSelection(step)
@@ -103,7 +103,7 @@ class App: NSApplication, NSApplicationDelegate, NSWindowDelegate {
     func refreshOpenUi() {
         guard appIsBeingUsed else { return }
         let currentScreen = Screen.preferred() // fix screen between steps since it could change (e.g. mouse moved to another screen)
-        if uiWorkShouldBeDone { thumbnailsPanel!.refreshCollectionView(currentScreen); debugPrint("refreshCollectionView") }
+        if uiWorkShouldBeDone { thumbnailsPanel!.refreshCollectionView(currentScreen, uiWorkShouldBeDone); debugPrint("refreshCollectionView") }
         if uiWorkShouldBeDone { thumbnailsPanel!.highlightCell(); debugPrint("highlightCellAt") }
         if uiWorkShouldBeDone { Screen.repositionPanel(thumbnailsPanel!, currentScreen, .appleCentered); debugPrint("repositionPanel") }
     }

alt-tab-macos/ui/ThumbnailsPanel.swift

@@ -97,14 +97,14 @@ class ThumbnailsPanel: NSPanel, NSCollectionViewDataSource, NSCollectionViewDele
         }
     }
 
-    func refreshCollectionView(_ currentScreen: NSScreen) {
-        self.currentScreen = currentScreen
-        (collectionView_.collectionViewLayout as! CollectionViewCenterFlowLayout).currentScreen = currentScreen
-        collectionView_!.setFrameSize(Screen.thumbnailPanelMaxSize(currentScreen))
-        collectionView_!.reloadData()
-        collectionView_!.layoutSubtreeIfNeeded()
-        setContentSize(NSSize(width: collectionView_!.frame.size.width + Preferences.windowPadding * 2, height: collectionView_!.frame.size.height + Preferences.windowPadding * 2))
-        backgroundView!.setFrameSize(frame.size)
-        collectionView_!.setFrameOrigin(NSPoint(x: Preferences.windowPadding, y: Preferences.windowPadding))
+    func refreshCollectionView(_ currentScreen: NSScreen, _ uiWorkShouldBeDone: Bool) {
+        if uiWorkShouldBeDone { self.currentScreen = currentScreen }
+        if uiWorkShouldBeDone { (collectionView_.collectionViewLayout as! CollectionViewCenterFlowLayout).currentScreen = currentScreen }
+        if uiWorkShouldBeDone { collectionView_!.setFrameSize(Screen.thumbnailPanelMaxSize(currentScreen)) }
+        if uiWorkShouldBeDone { collectionView_!.reloadData() }
+        if uiWorkShouldBeDone { collectionView_!.layoutSubtreeIfNeeded() }
+        if uiWorkShouldBeDone { setContentSize(NSSize(width: collectionView_!.frame.size.width + Preferences.windowPadding * 2, height: collectionView_!.frame.size.height + Preferences.windowPadding * 2)) }
+        if uiWorkShouldBeDone { backgroundView!.setFrameSize(frame.size) }
+        if uiWorkShouldBeDone { collectionView_!.setFrameOrigin(NSPoint(x: Preferences.windowPadding, y: Preferences.windowPadding)) }
     }
 }