Use FocusScope in all the right places

src/PlanView/MissionItemEditor.qml

@@ -41,9 +41,17 @@ Rectangle {
         colorGroupEnabled: enabled
     }
 
+    FocusScope {
+        id:             currentItemScope
+        anchors.fill:   parent
+
         MouseArea {
             anchors.fill:   parent
-        onClicked:      _root.clicked()
+            onClicked: {
+                currentItemScope.focus = true
+                _root.clicked()
+            }
+        }
     }
 
     QGCLabel {
@@ -72,7 +80,10 @@ Rectangle {
     QGCMouseArea {
         fillItem:   hamburger
         visible:    hamburger.visible
-        onClicked:  hamburgerMenu.popup()
+        onClicked: {
+            currentItemScope.focus = true
+            hamburgerMenu.popup()
+        }
 
         Menu {
             id: hamburgerMenu

src/PlanView/SectionHeader.qml

@@ -6,12 +6,11 @@ import QtGraphicalEffects 1.0
 import QGroundControl.ScreenTools   1.0
 import QGroundControl.Palette       1.0
 
-QGCMouseArea {
+FocusScope {
     id:             _root
     anchors.left:   parent.left
     anchors.right:  parent.right
     height:         column.height
-    onClicked:      checked = !checked
 
     property alias          text:           label.text
     property bool           checked:        true
@@ -27,6 +26,14 @@ QGCMouseArea {
 
     QGCPalette { id: qgcPal; colorGroupEnabled: true }
 
+    QGCMouseArea {
+        anchors.fill: parent
+
+        onClicked: {
+            _root.focus = true
+            checked = !checked
+        }
+
         ColumnLayout {
             id:             column
             anchors.left:   parent.left
@@ -62,3 +69,4 @@ QGCMouseArea {
             }
         }
     }
+}

src/QmlControls/QGCComboBox.qml

@@ -68,7 +68,10 @@ Button {
         }
     }
 
-    onClicked: popup.toggleShow()
+    onClicked: {
+        combo.focus = true
+        popup.toggleShow()
+    }
 
     Component.onCompleted: {
         if (currentIndex === -1) {

src/QmlControls/ToolStrip.qml

@@ -163,10 +163,14 @@ Rectangle {
                     visible:    index == 0 ? _showOptionalElements : true
                 }
 
-                Rectangle {
+                FocusScope {
+                    id:             scope
                     anchors.left:   parent.left
                     anchors.right:  parent.right
                     height:         width
+
+                    Rectangle {
+                        anchors.fill:   parent
                         color:          checked ? _repeaterPal.buttonHighlight : _repeaterPal.button
 
                         QGCColoredImage {
@@ -210,6 +214,7 @@ Rectangle {
                             preventStealing:        true
 
                             onClicked: {
+                                scope.focus = true
                                 if (modelData.dropPanelComponent === undefined) {
                                     dropPanel.hide()
                                     if (modelData.toggle === true) {
@@ -233,6 +238,7 @@ Rectangle {
                             }
                         }
                     }
+                }
 
                 Item {
                     width:      1