Coffee Machine Example

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 import QtQuick 2.4

 SideBarForm {
     id: sideBar
     property string currentCoffee: qsTr("Cappucino")
     signal coffeeSelected
     property real currentMilk: 0
     property real currentCoffeeAmount: 4

     Behavior on currentMilk {
          NumberAnimation { duration: 250 }
     }

     Behavior on currentCoffeeAmount {
          NumberAnimation { duration: 250 }
     }

     macchiatoButton.onClicked: {
         sideBar.currentCoffee = qsTr("Macchiato")
         sideBar.currentMilk = 1
         sideBar.currentCoffeeAmount = 4
         sideBar.coffeeSelected()
     }

     latteButton.onClicked: {
         sideBar.currentCoffee = qsTr("Latte")
         sideBar.currentMilk = 10
         sideBar.currentCoffeeAmount = 3
         sideBar.coffeeSelected()
     }

     espressoButton.onClicked: {
         sideBar.currentCoffee = qsTr("Espresso")
         sideBar.currentMilk = 0
         sideBar.currentCoffeeAmount = 4
         sideBar.coffeeSelected()
     }

     cappuccinoButton.onClicked: {
         sideBar.currentCoffee = qsTr("Cappucino")
         sideBar.currentMilk = 7
         sideBar.currentCoffeeAmount = 3.5
         sideBar.coffeeSelected()
     }
 }