diff --git a/applets/kicker/package/contents/ui/DashboardRepresentation.qml b/applets/kicker/package/contents/ui/DashboardRepresentation.qml
--- a/applets/kicker/package/contents/ui/DashboardRepresentation.qml
+++ b/applets/kicker/package/contents/ui/DashboardRepresentation.qml
@@ -333,7 +333,7 @@
 
             onClicked: searchField.clear();
 
-            Keys.onPressed: {
+            Keys.onPressed: event => {
                 if (event.key === Qt.Key_Tab) {
                     event.accepted = true;
 
@@ -471,7 +471,7 @@
                         systemFavoritesGrid.tryActivate(0, currentCol());
                     }
 
-                    Keys.onPressed: {
+                    Keys.onPressed: event => {
                         if (event.key === Qt.Key_Tab) {
                             event.accepted = true;
 
@@ -528,7 +528,7 @@
                         globalFavoritesGrid.tryActivate(globalFavoritesGrid.rows - 1, currentCol());
                     }
 
-                    Keys.onPressed: {
+                    Keys.onPressed: event => {
                         if (event.key === Qt.Key_Tab) {
                             event.accepted = true;
 
@@ -770,7 +770,7 @@
                     }
                 }
 
-                Keys.onPressed: {
+                Keys.onPressed: event => {
                     if (event.key === Qt.Key_Tab) {
                         event.accepted = true;
 
@@ -886,7 +886,7 @@
                                 }
                             }
 
-                            onPositionChanged: { // Lazy menu implementation.
+                            onPositionChanged: mouse => { // Lazy menu implementation.
                                 mouseCol = mouse.x;
 
                                 if (justOpenedTimer.running || ListView.view.currentIndex === 0 || index === ListView.view.currentIndex) {
@@ -904,15 +904,15 @@
                                 updateCurrentItemTimer.restart();
                             }
 
-                            onPressed: {
+                            onPressed: mouse => {
                                 if (mouse.buttons & Qt.RightButton) {
                                     if (hasActionList) {
                                         openActionMenu(item, mouse.x, mouse.y);
                                     }
                                 }
                             }
 
-                            onClicked: {
+                            onClicked: mouse => {
                                 if (mouse.button == Qt.LeftButton) {
                                     updateCurrentItem();
                                 }
@@ -1049,7 +1049,7 @@
                             }
                         }
 
-                        Keys.onPressed: {
+                        Keys.onPressed: event => {
                             if (event.key === Qt.Key_Left) {
                                 event.accepted = true;
 
@@ -1068,13 +1068,13 @@
             }
         }
 
-        onPressed: {
+        onPressed: mouse => {
             if (mouse.button == Qt.RightButton) {
                 contextMenu.open(mouse.x, mouse.y);
             }
         }
 
-        onClicked: {
+        onClicked: mouse => {
             if (mouse.button == Qt.LeftButton) {
                 root.toggle();
             }
diff --git a/applets/kicker/package/contents/ui/DashboardTabBar.qml b/applets/kicker/package/contents/ui/DashboardTabBar.qml
--- a/applets/kicker/package/contents/ui/DashboardTabBar.qml
+++ b/applets/kicker/package/contents/ui/DashboardTabBar.qml
@@ -28,7 +28,7 @@
 
     signal containsMouseChanged(int index, bool containsMouse)
 
-    onContainsMouseChanged: {
+    onContainsMouseChanged: (index, containsMouse) => {
         if (containsMouse) {
             hoveredTab = index;
         } else {
@@ -58,19 +58,19 @@
         focus: parent.focus & active
     }
 
-    Keys.onLeftPressed: {
+    Keys.onLeftPressed: event => {
         if (activeTab == 1) {
             activeTab = 0;
         }
     }
 
-    Keys.onRightPressed: {
+    Keys.onRightPressed: event => {
         if (activeTab == 0) {
             activeTab = 1;
         }
     }
 
-    Keys.onPressed: {
+    Keys.onPressed: event => {
         if (event.key === Qt.Key_Tab) {
             event.accepted = true;
 
diff --git a/applets/kicker/package/contents/ui/ItemGridDelegate.qml b/applets/kicker/package/contents/ui/ItemGridDelegate.qml
--- a/applets/kicker/package/contents/ui/ItemGridDelegate.qml
+++ b/applets/kicker/package/contents/ui/ItemGridDelegate.qml
@@ -114,7 +114,7 @@
         onContainsMouseChanged: item.GridView.view.itemContainsMouseChanged(containsMouse)
     }
 
-    Keys.onPressed: {
+    Keys.onPressed: event => {
         if (event.key === Qt.Key_Menu && hasActionList) {
             event.accepted = true;
             openActionMenu(item);
diff --git a/applets/kicker/package/contents/ui/ItemGridView.qml b/applets/kicker/package/contents/ui/ItemGridView.qml
--- a/applets/kicker/package/contents/ui/ItemGridView.qml
+++ b/applets/kicker/package/contents/ui/ItemGridView.qml
@@ -403,7 +403,7 @@
                 return item;
             }
 
-            onPressed: {
+            onPressed: mouse => {
                 mouse.accepted = true;
 
                 updatePositionProperties(mouse.x, mouse.y);
@@ -426,7 +426,7 @@
                 }
             }
 
-            onReleased: {
+            onReleased: mouse => {
                 mouse.accepted = true;
                 updatePositionProperties(mouse.x, mouse.y);
 
@@ -446,7 +446,7 @@
                 pressedItem = null;
             }
 
-            onPositionChanged: {
+            onPositionChanged: mouse => {
                 var item = pressedItem? pressedItem : updatePositionProperties(mouse.x, mouse.y);
 
                 if (gridView.currentIndex != -1) {
diff --git a/applets/kicker/package/contents/ui/ItemListDelegate.qml b/applets/kicker/package/contents/ui/ItemListDelegate.qml
--- a/applets/kicker/package/contents/ui/ItemListDelegate.qml
+++ b/applets/kicker/package/contents/ui/ItemListDelegate.qml
@@ -96,7 +96,7 @@
         hoverEnabled: true
         acceptedButtons: Qt.LeftButton | Qt.RightButton
 
-        onPressed: {
+        onPressed: mouse => {
             if (mouse.buttons & Qt.RightButton) {
                 if (item.hasActionList) {
                     item.openActionMenu(mouseArea, mouse.x, mouse.y);
@@ -108,7 +108,7 @@
             }
         }
 
-        onReleased: {
+        onReleased: mouse => {
             if (pressed && !item.hasChildren) {
                 item.ListView.view.model.trigger(index, "", null);
                 plasmoid.expanded = false;
@@ -119,7 +119,7 @@
             pressY = -1;
         }
 
-        onPositionChanged: {
+        onPositionChanged: mouse => {
             if (pressX != -1 && model.url && dragHelper.isDrag(pressX, pressY, mouse.x, mouse.y)) {
                 dragHelper.startDrag(kicker, model.url, model.decoration);
                 pressed = false;
diff --git a/applets/kicker/package/contents/ui/ItemListView.qml b/applets/kicker/package/contents/ui/ItemListView.qml
--- a/applets/kicker/package/contents/ui/ItemListView.qml
+++ b/applets/kicker/package/contents/ui/ItemListView.qml
@@ -199,7 +199,7 @@
                     }
                 }
 
-                Keys.onPressed: {
+                Keys.onPressed: event => {
                     if (event.key === Qt.Key_Up) {
                         event.accepted = true;
 
diff --git a/applets/kicker/package/contents/ui/MenuRepresentation.qml b/applets/kicker/package/contents/ui/MenuRepresentation.qml
--- a/applets/kicker/package/contents/ui/MenuRepresentation.qml
+++ b/applets/kicker/package/contents/ui/MenuRepresentation.qml
@@ -243,7 +243,7 @@
                         }
                     }
 
-                    Keys.onPressed: {
+                    Keys.onPressed: event => {
                         var target = null;
 
                         if (event.key === Qt.Key_Right) {
@@ -374,7 +374,7 @@
             }
         }]
 
-        Keys.onPressed: {
+        Keys.onPressed: event => {
             if (event.key === Qt.Key_Up) {
                 if (rootList.visible) {
                     rootList.showChildDialogs = false;
@@ -443,7 +443,7 @@
         }
     }
 
-    Keys.onPressed: {
+    Keys.onPressed: event => {
         if (event.key === Qt.Key_Escape) {
             plasmoid.expanded = false;
         }
diff --git a/applets/kicker/package/contents/ui/SideBarItem.qml b/applets/kicker/package/contents/ui/SideBarItem.qml
--- a/applets/kicker/package/contents/ui/SideBarItem.qml
+++ b/applets/kicker/package/contents/ui/SideBarItem.qml
@@ -37,12 +37,12 @@
         || (("hasActionList" in model) && (model.hasActionList !== null)))
     property int itemIndex: model.index
 
-    onAboutToShowActionMenu: {
+    onAboutToShowActionMenu: actionMenu => {
         var actionList = (model.hasActionList !== null) ? model.actionList : [];
         Tools.fillActionMenu(i18n, actionMenu, actionList, repeater.model, model.favoriteId);
     }
 
-    onActionTriggered: {
+    onActionTriggered: (actionId, actionArgument) => {
         if (Tools.triggerAction(repeater.model, model.index, actionId, actionArgument) === true) {
             plasmoid.expanded = false;
         }
diff --git a/applets/kicker/package/contents/ui/SideBarSection.qml b/applets/kicker/package/contents/ui/SideBarSection.qml
--- a/applets/kicker/package/contents/ui/SideBarSection.qml
+++ b/applets/kicker/package/contents/ui/SideBarSection.qml
@@ -35,7 +35,7 @@
     property alias model: repeater.model
     property alias usesPlasmaTheme: repeater.usesPlasmaTheme
 
-    onDragMove: {
+    onDragMove: event => {
         if (flow.animating) {
             return;
         }