Lock wallet on inactivity

pages/settings/Settings.qml

@@ -65,17 +65,16 @@ ColumnLayout {
 
         onCurrentViewChanged: {
             if (previousView) {
-//                if (typeof previousView.onPageClosed === "function") {
-//                    previousView.onPageClosed();
-//                }
+                if (typeof previousView.onPageClosed === "function") {
+                    previousView.onPageClosed();
+                }
             }
             previousView = currentView
             if (currentView) {
                 stackView.replace(currentView)
-                // Component.onCompleted is called before wallet is initilized
-//                if (typeof currentView.onPageCompleted === "function") {
-//                    currentView.onPageCompleted();
-//                }
+                if (typeof currentView.onPageCompleted === "function") {
+                    currentView.onPageCompleted();
+                }
             }
         }
 

pages/settings/SettingsLayout.qml

@@ -40,6 +40,14 @@ Rectangle {
     height: 1400
     Layout.fillWidth: true
 
+    function onPageCompleted() {
+        userInactivitySliderTimer.running = true;
+    }
+
+    function onPageClosed() {
+        userInactivitySliderTimer.running = false;
+    }
+
     ColumnLayout {
         id: settingsUI
         property int itemHeight: 60 * scaleRatio
@@ -70,6 +78,82 @@ Rectangle {
             text: qsTr("Hide balance") + translationManager.emptyString
         }
 
+        MoneroComponents.CheckBox {
+            visible: !isMobile
+            id: userInActivityCheckbox
+            checked: persistentSettings.lockOnUserInActivity
+            onClicked: persistentSettings.lockOnUserInActivity = !persistentSettings.lockOnUserInActivity
+            text: qsTr("Lock wallet on inactivity") + translationManager.emptyString
+        }
+
+        ColumnLayout {
+            visible: userInActivityCheckbox.checked
+            Layout.fillWidth: true
+            Layout.topMargin: 6 * scaleRatio
+            Layout.leftMargin: 42 * scaleRatio
+            spacing: 0
+
+            MoneroComponents.TextBlock {
+                font.pixelSize: 14 * scaleRatio
+                Layout.fillWidth: true
+                text: {
+                    var val = userInactivitySlider.value;
+                    var minutes = val > 1 ? qsTr("minutes") : qsTr("minute");
+
+                    qsTr("After ") + val + " " + minutes + translationManager.emptyString;
+                }
+            }
+
+            Slider {
+                id: userInactivitySlider
+                from: 1
+                value: persistentSettings.lockOnUserInActivityInterval
+                to: 60
+                leftPadding: 0
+                stepSize: 1
+                snapMode: Slider.SnapAlways
+
+                background: Rectangle {
+                    x: parent.leftPadding
+                    y: parent.topPadding + parent.availableHeight / 2 - height / 2
+                    implicitWidth: 200 * scaleRatio
+                    implicitHeight: 4 * scaleRatio
+                    width: parent.availableWidth
+                    height: implicitHeight
+                    radius: 2
+                    color: MoneroComponents.Style.grey
+
+                    Rectangle {
+                        width: parent.visualPosition * parent.width
+                        height: parent.height
+                        color: MoneroComponents.Style.green
+                        radius: 2
+                    }
+                }
+
+                handle: Rectangle {
+                    x: parent.leftPadding + parent.visualPosition * (parent.availableWidth - width)
+                    y: parent.topPadding + parent.availableHeight / 2 - height / 2
+                    implicitWidth: 18 * scaleRatio
+                    implicitHeight: 18 * scaleRatio
+                    radius: 8
+                    color: parent.pressed ? "#f0f0f0" : "#f6f6f6"
+                    border.color: MoneroComponents.Style.grey
+                }
+            }
+
+            Timer {
+                // @TODO: Slider.onMoved{} is available in Qt > 5.9, use a hacky timer for now
+                id: userInactivitySliderTimer
+                interval: 1000; running: false; repeat: true
+                onTriggered: {
+                    if(persistentSettings.lockOnUserInActivityInterval != userInactivitySlider.value) {
+                        persistentSettings.lockOnUserInActivityInterval = userInactivitySlider.value;
+                    }
+                }
+            }
+        }
+
         MoneroComponents.TextBlock {
             visible: isMobile
             font.pixelSize: 14