In-App purchasing demo

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 import QtQuick
 import QtQuick.Controls
 import Hangman

 Rectangle {
     id: storeItem

     property Product product: undefined

     state: "NORMAL"

     visible: product.status == Product.Registered
     radius: 10
     color: "white"

     height: titleText.contentHeight + descriptionText.contentHeight + topLevel.globalMargin * 2
     // ![0]
     Text {
         id: titleText
         text: product.title
         font.bold: true
         anchors.right: priceText.left
         anchors.rightMargin: topLevel.globalMargin
         anchors.top: parent.top
         anchors.topMargin: topLevel.globalMargin
         anchors.left: parent.left
         anchors.leftMargin: topLevel.globalMargin
     }

     Text {
         id: descriptionText
         text: product.description
         anchors.right: priceText.left
         anchors.rightMargin: topLevel.globalMargin
         anchors.left: parent.left
         anchors.leftMargin: topLevel.globalMargin
         anchors.top: titleText.bottom
         anchors.topMargin: topLevel.globalMargin / 2
         wrapMode: Text.WordWrap
     }

     Text {
         id: priceText
         text: product.price
         anchors.right: parent.right
         anchors.rightMargin: topLevel.globalMargin
         anchors.verticalCenter: parent.verticalCenter
     }

     MouseArea {
         anchors.fill: parent
         onClicked: {
             pendingRect.visible = true;
             spinBox.visible = true;
             statusText.text = "Purchasing...";
             storeItem.state = "PURCHASING";
             product.purchase();
         }
         onPressed: {
             storeItem.state = "PRESSED";
         }
         onReleased: {
             storeItem.state = "NORMAL";
         }
     }
     // ![0]

     Rectangle {
         id: pendingRect
         anchors.fill: parent
         opacity: 0.0
         color: "white"
         radius: parent.radius
         Text {
             id: statusText
             anchors.top: parent.top
             anchors.bottom: parent.bottom
             anchors.left: parent.left
             anchors.right: spinBox.left
             anchors.margins: topLevel.globalMargin
             verticalAlignment: Text.AlignVCenter
         }
         BusyIndicator {
             id: spinBox
             anchors.top: parent.top
             anchors.bottom: parent.bottom
             anchors.right: parent.right
             anchors.margins: topLevel.globalMargin
             width: height
         }

         Connections {
             target: product
             function onPurchaseSucceeded() {
                 statusText.text = "Purchase Succeeded";
                 spinBox.visible = false;

             }
             function onPurchaseFailed() {
                 statusText.text = "Purchase Failed";
                 spinBox.visible = false;
                 storeItem.state = "NORMAL";
             }
         }
     }

     states: [
         State {
             name: "NORMAL"
             PropertyChanges {
                 target: storeItem
                 color: "white"
                 border.color: "transparent"
             }
             PropertyChanges {
                 target: pendingRect
                 opacity: 0.0
             }
         },
         State {
             name: "PRESSED"
             PropertyChanges {
                 target: storeItem
                 color: "transparent"
                 border.color: "white"
             }
         },
         State {
             name: "PURCHASING"
             PropertyChanges {
                 target: pendingRect
                 opacity: 1.0
             }
         }
     ]

     transitions: [
         Transition {
             from: "PURCHASING"
             to: "NORMAL"
             NumberAnimation { target: pendingRect; property: "opacity"; duration: 2000; easing.type: Easing.InExpo }
         }
     ]
 }