fix ReferenceError: campi ricerca fuori dall'header della lista (scope chiuso)

qml/pages/MainPage.qml

@@ -7,13 +7,13 @@ Page {
 
     property var customPorts: []   // porti creati dalla ricerca libera (sessione)
 
-    SilicaListView {
-        id: list
-        anchors.fill: parent
-        model: ListModel { id: portModel }
-
-        header: Column {
+    // Campi di ricerca FUORI dal header della lista: gli id dichiarati nel
+    // componente header hanno scope chiuso e le funzioni del Page non li
+    // vedono (ReferenceError "filter is not defined").
+    Column {
+        id: topCol
         width: parent.width
+
         PageHeader { title: "Tide" }
 
         SearchField {
@@ -48,10 +48,18 @@ Page {
             color: Theme.errorColor
             font.pixelSize: Theme.fontSizeSmall
         }
-
-            SectionHeader { text: qsTr("Ports") }
     }
 
+    SilicaListView {
+        id: list
+        anchors.top: topCol.bottom
+        anchors.left: parent.left
+        anchors.right: parent.right
+        anchors.bottom: parent.bottom
+        model: ListModel { id: portModel }
+
+        header: SectionHeader { text: qsTr("Ports") }
+
         delegate: ListItem {
             contentHeight: Theme.itemSizeMedium
             highlighted: model.isPreferred
@@ -84,7 +92,7 @@ Page {
                 anchors.verticalCenter: parent.verticalCenter
             }
             onClicked: {
-                pageStack.push(Qt.resolvedUrl("DetailPage.qml"),
+                page.pageStack.push(Qt.resolvedUrl("DetailPage.qml"),
                                     { port: model.port, portIndex: model.realIndex, custom: model.custom })
             }
         }
@@ -125,6 +133,7 @@ Page {
     function geoFail() {
         geoMsg.text = qsTr("City not found (offline and not in local dataset).")
         geoMsg.visible = true
+        geoMsg.color = Theme.errorColor
     }
 
     function geoFound(name, lat, lon, src) {
@@ -144,7 +153,7 @@ Page {
         geoMsg.text = qsTr("Found %1 (via %2)").arg(name).arg(src)
         geoMsg.visible = true
         geoMsg.color = Theme.highlightColor
-        pageStack.push(Qt.resolvedUrl("DetailPage.qml"),
+        page.pageStack.push(Qt.resolvedUrl("DetailPage.qml"),
                             { port: port, portIndex: -1, custom: true })
     }
 
@@ -199,7 +208,7 @@ Page {
         if (pref !== "") {
             for (var i = 0; i < Tides.PORTS.length; i++) {
                 if (Tides.PORTS[i][0] === pref) {
-                    pageStack.push(Qt.resolvedUrl("DetailPage.qml"),
+                    page.pageStack.push(Qt.resolvedUrl("DetailPage.qml"),
                                         { port: Tides.PORTS[i], portIndex: i, custom: false })
                     break
                 }