qml: wallet loading indicator as modal dialog, unclosable

electrum/gui/qml/components/LoadingWalletDialog.qml

@@ -0,0 +1,41 @@
+import QtQuick 2.6
+import QtQuick.Layouts 1.0
+import QtQuick.Controls 2.3
+import QtQuick.Controls.Material 2.0
+
+import org.electrum 1.0
+
+ElDialog {
+    id: dialog
+
+    title: qsTr('Loading Wallet')
+    iconSource: Qt.resolvedUrl('../../icons/wallet.png')
+
+    modal: true
+    parent: Overlay.overlay
+    Overlay.modal: Rectangle {
+        color: "#aa000000"
+    }
+
+    x: Math.floor((parent.width - implicitWidth) / 2)
+    y: Math.floor((parent.height - implicitHeight) / 2)
+    // anchors.centerIn: parent // this strangely pixelates the spinner
+
+    ColumnLayout {
+        width: parent.width
+
+        BusyIndicator {
+            Layout.alignment: Qt.AlignHCenter
+
+            running: Daemon.loading
+        }
+    }
+
+    Connections {
+        target: Daemon
+        function onLoadingChanged() {
+            if (!Daemon.loading)
+                dialog.close()
+        }
+    }
+}