Tab and backtab keyboard navigation on supported content

Modals/Clipboard/ClipboardKeyboardController.qml

@@ -53,7 +53,7 @@ QtObject {
                 modal.hide()
                 event.accepted = true
             }
-        } else if (event.key === Qt.Key_Down) {
+        } else if (event.key === Qt.Key_Down || event.key === Qt.Key_Tab) {
             if (!modal.keyboardNavigationActive) {
                 modal.keyboardNavigationActive = true
                 modal.selectedIndex = 0
@@ -62,7 +62,7 @@ QtObject {
                 selectNext()
                 event.accepted = true
             }
-        } else if (event.key === Qt.Key_Up) {
+        } else if (event.key === Qt.Key_Up || event.key === Qt.Key_Backtab) {
             if (!modal.keyboardNavigationActive) {
                 modal.keyboardNavigationActive = true
                 modal.selectedIndex = 0

Modals/PowerMenuModal.qml

@@ -57,13 +57,11 @@ DankModal {
     modalFocusScope.Keys.onPressed: (event) => {
         switch (event.key) {
         case Qt.Key_Up:
+        case Qt.Key_Backtab:
             selectedIndex = (selectedIndex - 1 + optionCount) % optionCount;
             event.accepted = true;
             break;
         case Qt.Key_Down:
-            selectedIndex = (selectedIndex + 1) % optionCount;
-            event.accepted = true;
-            break;
         case Qt.Key_Tab:
             selectedIndex = (selectedIndex + 1) % optionCount;
             event.accepted = true;

Modals/Spotlight/SpotlightContent.qml

@@ -33,6 +33,20 @@ Item {
                         } else if (event.key === Qt.Key_Left && appLauncher.viewMode === "grid") {
                             appLauncher.selectPreviousInRow()
                             event.accepted = true
+                        } else if (event.key === Qt.Key_Tab) {
+                            if (appLauncher.viewMode === "grid") {
+                                appLauncher.selectNextInRow()
+                            } else {
+                                appLauncher.selectNext()
+                            }
+                            event.accepted = true
+                        } else if (event.key === Qt.Key_Backtab) {
+                            if (appLauncher.viewMode === "grid") {
+                                appLauncher.selectPreviousInRow()
+                            } else {
+                                appLauncher.selectPrevious()
+                            }
+                            event.accepted = true
                         } else if (event.key === Qt.Key_Return || event.key === Qt.Key_Enter) {
                             appLauncher.launchSelected()
                             event.accepted = true
@@ -124,7 +138,7 @@ Item {
                                         else if (appLauncher.model.count > 0)
                                         appLauncher.launchApp(appLauncher.model.get(0))
                                         event.accepted = true
-                                    } else if (event.key === Qt.Key_Down || event.key === Qt.Key_Up || event.key === Qt.Key_Left || event.key === Qt.Key_Right || ((event.key === Qt.Key_Return || event.key === Qt.Key_Enter) && text.length === 0)) {
+                                    } else if (event.key === Qt.Key_Down || event.key === Qt.Key_Up || event.key === Qt.Key_Left || event.key === Qt.Key_Right || event.key === Qt.Key_Tab || event.key === Qt.Key_Backtab || ((event.key === Qt.Key_Return || event.key === Qt.Key_Enter) && text.length === 0)) {
                                         event.accepted = false
                                     }
                                 }

Modules/Notifications/Center/NotificationKeyboardController.qml

@@ -425,7 +425,10 @@ QtObject {
                 clearSelected()
                 event.accepted = true
             } else if (event.key === Qt.Key_Tab) {
-                selectNextWrapping()
+                selectNext()
+                event.accepted = true
+            } else if (event.key === Qt.Key_Backtab) {
+                selectPrevious()
                 event.accepted = true
             } else if (event.key >= Qt.Key_1 && event.key <= Qt.Key_9) {
                 const actionIndex = event.key - Qt.Key_1