QmlDesigner: Add State specifics

Change-Id: Ia80688dc056eab190e80344ef4414d1be247c4e5
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

share/qtcreator/qmldesigner/propertyEditorQmlSources/QtQuick/StateSpecifics.qml

@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+import QtQuick 2.15
+import HelperWidgets 2.0
+import QtQuick.Layouts 1.15
+
+Column {
+    anchors.left: parent.left
+    anchors.right: parent.right
+
+    Section {
+        anchors.left: parent.left
+        anchors.right: parent.right
+        caption: qsTr("State")
+
+        SectionLayout {
+            Label {
+                text: qsTr("When")
+                tooltip: qsTr("Sets when the state should be applied.")
+            }
+            SecondColumnLayout {
+                CheckBox {
+                    text: backendValues.when.valueToString
+                    backendValue: backendValues.when
+                    implicitWidth: 180
+                }
+                ExpandingSpacer {}
+            }
+
+            Label {
+                text: qsTr("Name")
+                tooltip: qsTr("Holds the name of the state.")
+            }
+            SecondColumnLayout {
+                LineEdit {
+                    backendValue: backendValues.name
+                    Layout.fillWidth: true
+                    showTranslateCheckBox: false
+                }
+                ExpandingSpacer {}
+            }
+
+            Label {
+                text: qsTr("Extend")
+                tooltip: qsTr("Holds the state that this state extends.")
+            }
+            SecondColumnLayout {
+                LineEdit {
+                    backendValue: backendValues.extend
+                    Layout.fillWidth: true
+                    showTranslateCheckBox: false
+                }
+                ExpandingSpacer {}
+            }
+        }
+
+    }
+}