OptionsDialog.qml Example File

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 import QtQuick 2.0
 import QtLocation 5.0
 import QtLocation.examples 5.0

 Dialog {
     id: dialog

     property alias isFavoritesEnabled: enableFavoritesButton.selected
     property alias locales: localesInput.text
     property int listItemHeight: 21

     title: "Options"

     item: Column {
         id: options
         width: parent.width
         spacing: gap

         TextWithLabel {
             id: localesInput

             width: parent.width - gap
             height: listItemHeight
             label: "Locale(s)"
             enabled: true
             visible: placesPlugin.name != "" ? placesPlugin.supportsPlaces(Plugin.LocalizedPlacesFeature) : false;
         }

         Optionbutton {
             id: enableFavoritesButton

             function resetVisibility() {
                 if (placesPlugin.name !== "nokia_places_jsondb") {
                     var pluginNames = placesPlugin.availableServiceProviders;
                     for (var i = 0; i < pluginNames.length; ++i) {
                         if (pluginNames[i] === "nokia_places_jsondb") {
                             enableFavoritesButton.visible = true;
                             return;
                         }
                     }
                 }
                 enableFavoritesButton.visible = false;
             }

             width: parent.width
             text: "Enable favorites"
             toggle:  true
             visible: false

             Component.onCompleted: {
                 resetVisibility();
                 placesPlugin.nameChanged.connect(resetVisibility);
             }
         }
     }
 }