added escape key handler (#461)

Added escape key handler for drawer2type

client/ui/qml/Pages2/PageDeinstalling.qml

@@ -14,8 +14,8 @@ import "../Config"
 PageType {
     id: root
 
-    Component.onCompleted: PageController.enableTabBar(false)
-    Component.onDestruction: PageController.enableTabBar(true)
+    Component.onCompleted: PageController.disableControls(true)
+    Component.onDestruction: PageController.disableControls(false)
 
     SortFilterProxyModel {
         id: proxyServersModel

client/ui/qml/Pages2/PageSetupWizardInstalling.qml

@@ -14,8 +14,8 @@ import "../Config"
 PageType {
     id: root
 
-    Component.onCompleted: PageController.enableTabBar(false)
-    Component.onDestruction: PageController.enableTabBar(true)
+    Component.onCompleted: PageController.disableControls(true)
+    Component.onDestruction: PageController.disableControls(false)
 
     property bool isTimerRunning: true
     property string progressBarText: qsTr("Usually it takes no more than 5 minutes")

client/ui/qml/Pages2/PageSetupWizardStart.qml

@@ -13,6 +13,8 @@ import "../Components"
 PageType {
     id: root
 
+    property bool isControlsDisabled: false
+
     Connections {
         target: PageController
 
@@ -45,6 +47,18 @@ PageType {
                 stackView.pop()
             }
         }
+
+        function onDisableControls(disabled) {
+            isControlsDisabled = disabled
+        }
+
+        function onEscapePressed() {
+            if (isControlsDisabled || busyIndicator.visible) {
+                return
+            }
+
+            PageController.closePage()
+        }
     }
 
     Connections {

client/ui/qml/Pages2/PageStart.qml

@@ -38,8 +38,8 @@ PageType {
             tabBar.enabled = !visible
         }
 
-        function onEnableTabBar(enabled) {
-            tabBar.enabled = enabled
+        function onDisableControls(disabled) {
+            tabBar.enabled = !disabled
         }
 
         function onClosePage() {
@@ -70,6 +70,21 @@ PageType {
                 tabBarStackView.pop()
             }
         }
+
+        function onEscapePressed() {
+            if (!tabBar.enabled || busyIndicator.visible) {
+                return
+            }
+
+            var pageName = tabBarStackView.currentItem.objectName
+            if ((pageName === PageController.getPagePath(PageEnum.PageShare)) ||
+                    (pageName === PageController.getPagePath(PageEnum.PageSettings))) {
+                PageController.goToPageHome()
+                tabBar.previousIndex = 0
+            } else {
+                PageController.closePage()
+            }
+        }
     }
 
     Connections {