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Squaby Demo

 import QtQuick 2.0
 import Felgo 3.0
 import "../otherScenes" // for MainMenuButton and SquabySceneBase
 import "levelSelection"
 import"../common"

 SquabySceneBase {
   id: levelSelectionScene

   signal backClicked
   signal levelSelected(variant levelData, bool isAuthorLevel, bool isUserLevel, bool isDownloaded, bool isPublished, bool isLoggedInPlayer)
   signal newLevelClicked
   signal clearSelectedItems
   // is called when the fb connection dialog was shown due to no friends
   signal showProfileView
   signal showHighscoreForLevel(string leaderboard)
   signal unpublishLevelClicked(variant levelData)
   // is emitted from LevelItem if the share level button is clicked
   signal downloadLevelClicked(variant levelData)

   // gets set from the MainMenuScene, depending which mainmenu button was clicked (application levels, author levels, etc.)
   // is used to disable the new level button for application levels
   // currently only user levels are used, so set this initally
   property string storageLocation: levelEditor.applicationJSONLevelsLocation

   // can have the following states: "myLevels", "myDownloadedLevels", "exited", "appLevels", "communityLevels"
   state: "exited"
   property string oldState: ""
   property string prevState: ""
   property string exitReason: ""

   onBackButtonPressed: {
     if(buyCreditDialog.opacity == 1) {
       buyCreditDialog.opacity = 0
       myLevelSelection.isLoading = false
       return
     } else if(unpublishDialog.opacity == 1) {
       unpublishDialog.opacity = 0
       return
     }

     levelSelectionScene.state = "exited"
     // make this with a timer, otherwise the animation wouldnt be played to the end!
     exitReason = "exit"
     sceneChangeTimer.start()
   }

   // either is default "", "unpublishConfirmation"
   property string dialogState
   property variant unpublishLevelData
   Connections {
     target: nativeUtils
     onMessageBoxFinished: {

       if(accepted) {
         if(dialogState === "unpublishConfirmation") {
           flurry.logEvent("LevelSelection.Unpublish")
           levelEditor.unpublishLevel(unpublishLevelData)
           editAuthorLevel = true
           singleLevelSelected(unpublishDialog.levelData)
         }
       }
       // reset the dialogState, no matter if accepted or not
       dialogState = ""
     }

   }

   MultiResolutionImage {
     source: "../../assets/img/bgSubmenu.png"
     anchors.centerIn: parent
     property int pixelFormat: 3
   }

   MultiResolutionImage {
     source: "../../assets/img/nextprev.png"
     visible: (
              (levelScene.state === "communityLevels" && levelEditor.communityLevelsPageMetaData.page > 1)) &&
              // avoid to show while the level items are created
              !currentLevelSelection.isLoading

     anchors.top: levelSelectionScene.gameWindowAnchorItem.top
     anchors.topMargin: 3
     anchors.left: levelSelectionScene.gameWindowAnchorItem.left
     anchors.leftMargin: -3
     MouseArea {
       anchors.fill: parent
       onClicked: {
         parent.scale = 1.0
         currentLevelSelection.prevPage()
       }
       onPressed: {
         parent.scale = 0.85
       }
       onReleased: {
         parent.scale = 1.0
       }
       onCanceled: {
         parent.scale = 1.0
       }
     }
   }

   MultiResolutionImage {
     source: "../../assets/img/nextprev.png"
     visible: (levelScene.state === "communityLevels") &&
              levelEditor.userGeneratedLevelsPageMetaData !== undefined && levelEditor.userGeneratedLevelsPageMetaData.page < levelEditor.userGeneratedLevelsPageMetaData.pageCount &&
              // avoid to show while the level items are created
              !currentLevelSelection.isLoading
     mirror: true
     anchors.top: levelSelectionScene.gameWindowAnchorItem.top
     anchors.topMargin: 3
     anchors.right: levelSelectionScene.gameWindowAnchorItem.right
     anchors.rightMargin: -3

     MouseArea {
       anchors.fill: parent
       onClicked: {
         parent.scale = 1.0
         currentLevelSelection.nextPage()
       }
       onPressed: {
         parent.scale = 0.85
       }
       onReleased: {
         parent.scale = 1.0
       }
       onCanceled: {
         parent.scale = 1.0
       }
     }
   }

   MultiResolutionImage {
     id: header
     anchors.top: gameWindowAnchorItem.top
     anchors.topMargin: -2
     anchors.horizontalCenter: gameWindowAnchorItem.horizontalCenter
     source: "../../assets/img/menuBar.png"

     Text {
       anchors.centerIn: parent
       visible: levelSelectionScene.state === "appLevels"
       text: qsTr("Select Level")
       color: "white"
       font.family: jellyFont.name
       font.pixelSize: 42
     }

     Text {
       anchors.centerIn: parent
       visible: levelSelectionScene.state === "exited"
       text: qsTr("...")
       color: "white"
       font.family: jellyFont.name
       font.pixelSize: 42
     }

     Row {
       id: headerRow
       anchors.centerIn: parent
       spacing: 10

       visible: levelSelectionScene.state !== "appLevels" && levelSelectionScene.state !== "communityLevels" && levelSelectionScene.state !== "exited"

       MenuButton {
         source: "../../assets/img/menu-new.png"
         visible: levelSelectionScene.state === "myLevels" || levelScene.state === "myDownloadedLevels"
         onClicked: {
           levelSelectionScene.state = "exited"
           exitReason = "newLevel"
           sceneChangeTimer.start()
         }
       }
       MenuButton {
         source: "../../assets/img/menu-saved.png"
         active: levelScene.state === "myLevels"
         onClicked: {
           flurry.logEvent("LevelSelection.ChangeTo","myLevels")
           levelScene.state = "myLevels"
           previousMyLevelState = levelScene.state
         }
       }
       MenuButton {
         source: "../../assets/img/menu-downloaded.png"
         active: levelScene.state === "myDownloadedLevels"
         onClicked: {
           flurry.logEvent("LevelSelection.ChangeTo","myDownloadedLevels")
           levelScene.state = "myDownloadedLevels"
           previousMyLevelState = levelScene.state
         }

         onPressAndHold: {
           // don't add this functionality in publish builds, just during testing
           if(system.publishBuild)
             return

           // this is just during testing, to test the behavior of no downloaded(=bought) levels
           console.debug("clearing all bought levels...")
           levelStore.clearAllBoughtLevels()
         }
       }
     }// headerRow

     property bool sort: true

     MenuButton {
       id: dataSettings
       source: "../../assets/img/menu-clock.png"
       anchors.verticalCenter: parent.verticalCenter
       anchors.left: parent.left
       anchors.leftMargin: 5
       visible: levelScene.state === "communityLevels" && header.sort

       onClicked: {
         flurry.logEvent("LevelSelection.Sorting","Time")
         header.sort^=1
       }
     }

     MenuButton {
       source: "../../assets/img/menu-sort.png"
       anchors.verticalCenter: parent.verticalCenter
       anchors.left: parent.left
       anchors.leftMargin: 5
       visible: levelScene.state === "communityLevels" && !header.sort

       onClicked: {
         flurry.logEvent("LevelSelection.Sorting","Sort")
         header.sort^=1
       }
     }

     Item {
       height: parent.height
       width: parent.width - dataSettings.width
       anchors.left: dataSettings.right
       anchors.verticalCenter: parent.verticalCenter
       visible: levelScene.state === "communityLevels"

       Row {
         id: moreSubRow
         spacing: 15
         anchors.centerIn: parent
         height: parent.height

         MenuButtonText {
           id: highestRated
           anchors.verticalCenter: parent.verticalCenter
           text: "Highest Rated"
           active: levelScene.orderString() === text
           visible: header.sort
           onClicked: {
             flurry.logEvent("LevelSelection.Sorting","average_quality")
             levelScene.order = "average_quality"
           }
         }
         MenuButtonText {
           id: newestText
           anchors.verticalCenter: parent.verticalCenter
           text: "Newest"
           active: levelScene.orderString() === text
           visible: header.sort
           onClicked: {
             flurry.logEvent("LevelSelection.Sorting","created_at")
             levelScene.order = "created_at"
           }
         }
         MenuButtonText {
           id: mostDownloaded
           anchors.verticalCenter: parent.verticalCenter
           text: "Most Downloaded"
           active: levelScene.orderString() === text
           visible: header.sort
           onClicked: {
             flurry.logEvent("LevelSelection.Sorting","times_downloaded")
             levelScene.order = "times_downloaded"
           }
         }

         MenuButton {
           id: alltime
           source: "../../assets/img/menu-alltime.png"
           active: levelScene.timeLimit === 0
           visible: !header.sort
           onClicked: {
             flurry.logEvent("LevelSelection.AllTime")
             levelScene.timeLimit = 0
           }
         }
         MenuButton {
           id: week
           source: "../../assets/img/menu-7d.png"
           active: levelScene.timeLimit === 24*7
           visible: !header.sort
           onClicked: {
             flurry.logEvent("LevelSelection.ThisWeek")
             levelScene.timeLimit = 24*7
           }
         }
         MenuButton {
           id: today
           source: "../../assets/img/menu-24h.png"
           active: levelScene.timeLimit === 24
           visible: !header.sort
           onClicked: {
             flurry.logEvent("LevelSelection.Today")
             levelScene.timeLimit = 24
           }
         }
       }
     } // moreSubRow

   }// header

   // is set in onStateChanged
   property variant currentLevelSelection: myLevelSelection

   LevelSelection {
     id: myLevelSelection
     visible: levelSelectionScene.state !== "exited" && !isLoading
     anchors.top: header.bottom
     anchors.topMargin: 10
     anchors.bottom: backButtonItem.top
     anchors.bottomMargin: 10
     anchors.left: gameWindowAnchorItem.left
     anchors.leftMargin: grid.width < levelSelectionScene.gameWindowAnchorItem.width  ? (levelSelectionScene.gameWindowAnchorItem.width-grid.width)/2-2 : 1
     anchors.right: gameWindowAnchorItem.right
     anchors.rightMargin: 1
     clip: false
     levelMetaDataArray: (levelScene.state === "myLevels" || levelScene.state === "appLevels") ? storageFromLocation() : (levelScene.state === "myDownloadedLevels" ? levelEditor.downloadedLevels : levelEditor.communityLevels)
     pageCount: levelScene.state === "communityLevels" ? levelEditor.communityLevelsPageMetaData.pageCount : 1
   }

   MultiResolutionImage {
     id: loading
     source: "../../assets/img/splash-text.png"
     anchors.centerIn: parent.gameWindowAnchorItem
     //anchors.verticalCenter: parent.parent.gameWindowAnchorItem.verticalCenter
     //anchors.horizontalCenter: parent.parent.gameWindowAnchorItem.horizontalCenter
     //anchors.horizontalCenterOffset: -parent.x
     visible: myLevelSelection.isLoading
   }

   Connections {
     target: levelStore
     onInsufficientFundsError: {
       flurry.logEvent("Level.InsufficientFunds")
       buyCreditDialog.opacity = 1
       myLevelSelection.isLoading = false
     }
     onLevelBoughtSuccessfully: {
       flurry.logEvent("Level.BoughtSucc")
       console.debug("level bought:", JSON.stringify(levelData))
     }
     onLevelDownloadedSuccessfully: {
       flurry.logEvent("Level.Downloaded")
       console.debug("level downloaded:", JSON.stringify(levelData))
     }
     onItemNotFoundError:  {
       myLevelSelection.isLoading = false
     }
     onItemPurchased: {
       myLevelSelection.isLoading = false
     }

     onStorePurchaseCancelled: {
       myLevelSelection.isLoading = false
     }

     onStorePurchased: {
       myLevelSelection.isLoading = false
     }
   }

   BuyCreditDialog {
     id: buyCreditDialog
     opacity: 0
     onOpacityChanged: {
       if(opacity == 1) {
         myLevelSelection.isLoading = true
       }
     }
     onCancelClicked: {
       myLevelSelection.isLoading = false
     }

     z: 100
   }

   DialogField {
     id: unpublishDialog

     width: levelScene.gameWindowAnchorItem.width
     height: levelScene.gameWindowAnchorItem.height

     descriptionText: qsTr("Your level is published, play it or unpublish it for editing!")
     options1Text: qsTr("Play")
     options2Text: qsTr("Edit")
     options3Text: qsTr("Unpublish")

     opacity: 0
     z: 100

     onOption1Pressed: {
       flurry.logEvent("LevelSelection.Published.Dialog","Play")
       editAuthorLevel = false
       singleLevelSelected(levelData)
     }

     onOption2Pressed: {
       flurry.logEvent("LevelSelection.Published.Dialog","Edit")
       reloadLevel = true
       editAuthorLevel = true
       singleLevelSelected(levelData)
     }

     onOption3Pressed: {
       flurry.logEvent("LevelSelection.Published.Dialog","Unpublish")
       unpublishLevelClicked(levelData)
     }

     property variant levelData
   }

   onLevelSelected: {
     if(isAuthorLevel && !isPublished) {
       editAuthorLevel = true
       singleLevelSelected(levelData)
     } else if(isAuthorLevel && isPublished) {
       editAuthorLevel = false
       unpublishDialog.opacity = 1.0
       unpublishDialog.levelData = levelData
     } else {
       editAuthorLevel = false
       singleLevelSelected(levelData)
     }
   }

   onDownloadLevelClicked: {
     // it's up to the developer if he wants to support the LevelStore - if so, then a direct download is not possible but only a buy
     // on iOS & Android, do not open the store yet, as too tedious to set up during development
     // this should be the other way around in the end, or use buyLevel for both platforms, as basic Store functionality is now also supported on desktop
     // NOTE: the supported property does also return FALSE on iOS & Android, thus a bug in Store plugin!
     //if(levelStore.supported) {

     // for testing the purchase process with the build server, by default the "stage" property is set to "test"
     // this means the build server signs the app with the Felgo certificate to allow quick testing & deployment
     // however, in-app-purchases and the Store plugin require a publish build because in-app purchases are not working with the Felgo certificate but require YOUR OWN certificate
     // thus for final testing including in-app purchases on iOS & Android, do change to publish build by changing the config.json "stage" property to "publish"
     // and to simulate the correct purchase process on build server for test builds, we directly download the level without an actual purchase on iOS & Android
     if( (system.isPlatform(System.IOS) || system.isPlatform(System.Android)) && !system.publishBuild ) {
       levelEditor.downloadLevel(levelData)
     } else {
       levelStore.buyLevel(levelData)
     }
   }

   onUnpublishLevelClicked: {
     dialogState = "unpublishConfirmation"
     // must be saved so we know the levelId to unpublish after confirmation
     unpublishLevelData = levelData
     nativeUtils.displayMessageBox("Unpublish Confirmation", "Do you really want to unpublish your level? This removes all ratings and download stats for this level.", 2)
   }

   onStateChanged: {
     if(state === "myLevels" || state === "appLevels") {
       levelEditor.loadAllLevelsFromStorageLocation(storageLocation)
       // we need to now how often a level from the user was downloaded.
       var params = {}
       params.filters =  ["created_by_user"]
       levelEditor.loadUserOrFriendsLevels(params)
     } else if(state === "myDownloadedLevels") {
       levelEditor.loadAllLevelsFromStorageLocation(levelEditor.downloadedLevelsLocation)
     } else if (state === "communityLevels") {
       // this takes into account the current ordering and timeLimit
       levelScene.reloadLevels()
     } else if(state === "exited") {

     } else {
       console.debug("ERROR: LevelScene: undefined state!", state)
     }
     prevState = oldState
     oldState = state
   }

   // is either "myLevels" or "myDownloadedLevels", and is needed to go back to these levels when "My Levels" is selected
   property string previousMyLevelState: "myLevels"

   //order - Order results by fields, newest/highst quality first Has to be one of ["created_at", "average_quality", "average_difficulty", "times_favored", "times_played", "times_downloaded"]. Default: created_at.
   property string order: "average_quality"
   onOrderChanged: {
     currentLevelSelection.page = 1
     reloadLevels()
   }
   function orderString() {
     if(order === "created_at")
       return "Newest"
     else if(order === "average_quality")
       return "Highest Rated"
     else if(order === "times_downloaded")
       return "Most Downloaded"

     return "XXX"
   }

   //timeLimit - Only return levels that have been created within time_limit hours (integer).
   property int timeLimit
   onTimeLimitChanged: {
     currentLevelSelection.page = 1
     reloadLevels()
   }

   function reloadLevels() {
     var params = {}
     if(timeLimit > 0) {
       params.timeLimit = timeLimit
     }
     params.order = order
     params.perPage = currentLevelSelection.pageSize
     params.page = currentLevelSelection.page

     if(levelScene.state === "communityLevels") {
       levelEditor.loadCommunityLevels(params)
     }
   }

   // this is used as a binding for the levelListRepeater.model property
   // every time the storageLocation changes, the model will also update
   // if the model in levelEditor then changes afterwards (e.g. authorGeneratedLevels change because a new level was added), the change will be forwarded to the model as it is a binding
   function storageFromLocation() {
     console.debug("LevelSelectionScene: storageLocation changed to", storageLocation)
     if(storageLocation === levelEditor.authorGeneratedLevelsLocation) {
       return levelEditor.authorGeneratedLevels
     } else if(storageLocation === levelEditor.applicationQMLLevelsLocation) {
       return levelEditor.applicationQMLLevels
     } else if(storageLocation === levelEditor.applicationJSONLevelsLocation) {
       return resort(levelEditor.applicationJSONLevels)
     } else {
       console.debug("ERROR: LevelSelectionScene: unknown storageLocation:", storageLocation)
       return null
     }
   }

   // used to sort the json levels in a order as they should appear to play one after another.
   function resort(levelMetaDataArray) {
     var predesignedLevelCount = 11
     if(!levelMetaDataArray || levelMetaDataArray.length < predesignedLevelCount)
       return;

     var finalOrderOfLevels = new Array
     var index = 0
     while(index < predesignedLevelCount-1) {
       for(var i=0; levelMetaDataArray && i<levelMetaDataArray.length; i++) {
         var level = levelMetaDataArray[i]
         if(index == 0 && level.levelName === "Level 1") {
           finalOrderOfLevels.push(level)
           index++
         } else if(index == 1 && level.levelName === "Level 2") {
           finalOrderOfLevels.push(level)
           index++
         } else if(index == 2 && level.levelName === "Level 3") {
           finalOrderOfLevels.push(level)
           index++
         } else if(index == 3 && level.levelName === "Level 4") {
           finalOrderOfLevels.push(level)
           index++
         } else if(index == 4 && level.levelName === "Level 5") {
           finalOrderOfLevels.push(level)
           index++
         }  else if(index == 5 && level.levelName === "Level 6") {
           finalOrderOfLevels.push(level)
           index++
         } else if(index == 6 && level.levelName === "Level 7") {
           finalOrderOfLevels.push(level)
           index++
         } else if(index == 7 && level.levelName === "Level 8") {
           finalOrderOfLevels.push(level)
           index++
         } else if(index == 8 && level.levelName === "Level 9") {
           finalOrderOfLevels.push(level)
           index++
         } else if(index == 9 && level.levelName === "Level 10") {
           finalOrderOfLevels.push(level)
           index++
         }
       }
     }
     return finalOrderOfLevels
   }
   function levelArrayFromState() {
     if(state === "myLevels" || state === "appLevels")
       return storageFromLocation()
     else if(state === "myDownloadedLevels")
       return levelEditor.downloadedLevels
     else if(state === "communityLevels")
       return levelEditor.communityLevels

     console.debug("ERROR: LevelScene: undefined state!", state)

     return undefined

   }
   Item {
     id: backButtonItem
     height: more.height
     anchors.left: parent.gameWindowAnchorItem.left
     anchors.bottom: gameWindowAnchorItem.bottom
     anchors.bottomMargin: 10
     MainMenuButton {
       id: backButton

       text: ""

       offsetX: -120

       onClicked: {
         menuImage.scale = 1.0
         backButtonPressed()
       }
       onPressed: {
         menuImage.scale = 0.85
       }
       onReleased: {
         menuImage.scale = 1.0
       }
       onCanceled: {
         menuImage.scale = 1.0
       }
       MultiResolutionImage {
         id: menuImage
         source: "../../assets/img/menu-back.png"
         anchors.right: parent.right
         anchors.rightMargin: 10
       }
     }
   }

     MainMenuButton {
       id: more
       slideInFromRight: false
       offsetX: (storageLocation == levelEditor.applicationJSONLevelsLocation) ? 100 : 100
       outslidedXBase: levelSelectionScene.width
       anchors.bottom: gameWindowAnchorItem.bottom
       anchors.bottomMargin: 10

       Row {
         id: moreSubRowMyLevels
         spacing: 25
         y: 1
         anchors.verticalCenter: parent.verticalCenter
         anchors.left: parent.left
         anchors.leftMargin: 15

         MenuButton {
           source: "../../assets/img/menu-author.png"
           active: levelScene.state === "myLevels" || levelScene.state === "myDownloadedLevels"
           onClicked: {
             flurry.logEvent("LevelSelection.MyLevels")
             storageLocation = levelEditor.authorGeneratedLevelsLocation
             levelScene.state = levelScene.previousMyLevelState
           }
         }

         MenuButton {
           source: "../../assets/img/menu-community.png"
           active: levelScene.state === "communityLevels"
           onClicked: {
             flurry.logEvent("LevelSelection.CommunityLevels")
             levelScene.state = "communityLevels"
           }
         }

         MenuButton {
           source: "../../assets/img/menu-grid.png"
           active: levelScene.state === "appLevels"
           onClicked: {
             flurry.logEvent("LevelSelection.AppLevels")
             storageLocation = levelEditor.applicationJSONLevelsLocation
             levelScene.state = "appLevels"
           }
         }

         MenuButton {
           source: "../../assets/img/menu-buy.png"

           onClicked: {
             buyCreditDialog.opacity = 1
           }
           onPressAndHold: {

             // don't add this functionality in publish builds, just during testing
             if(system.publishBuild)
               return

             // just for testing during development to reset the playerCredits
             levelStore.resetCurrency()
           }
           Text {
             text: levelStore.playerCredits
             anchors.horizontalCenter: parent.horizontalCenter
             anchors.horizontalCenterOffset: 2
             anchors.verticalCenter: parent.verticalCenter
             anchors.verticalCenterOffset: -5
             //anchors.left: parent.right
             color: "#405e83"
             font.family: jellyFont.name
             font.pixelSize: 14
           }
         }

       } // moreSubRowMyLevels
     }

   // Called when scene is displayed
   function enterScene() {
     if(oldState === "" || oldState === "exited") {
       if(storageLocation == levelEditor.applicationJSONLevelsLocation) {
         state = "appLevels"
       } else if(storageLocation == levelEditor.authorGeneratedLevelsLocation) {
         state = "myLevels"
       }
     } else {
       state = oldState
     }
   }

   function singleLevelSelected(levelData) {
     console.debug("LevelSelectionScene: single level selected, switch to state game and load the level with LevelEditor")
     flurry.logEvent("LevelSelection.LoadLevel.clicked")
     state = "exited"
     exitReason = "levelStart"
     sceneChangeTimer.levelData = levelData
     sceneChangeTimer.start()
   }

   Timer {
     id: sceneChangeTimer
     interval: backButton.slideDuration
     onTriggered: {
       if(exitReason === "exit") {
         levelScene.backClicked()
       } else if(exitReason === "levelStart") {
         reloadLevel = true
         twoPhaseLevelLoader.startLoadingLevel(false, levelData)
       } else if(exitReason === "newLevel") {
         newLevelClicked()
       }
     }
     property variant levelData
   }

   states: [
     State {
       PropertyChanges { target: header; opacity: 1 }
       PropertyChanges { target: currentLevelSelection; opacity: 1 }
       name: "myLevels"
       StateChangeScript {
         script: {
           backButton.slideIn()
           more.slideIn()
         }
       }
     },
     State {
       PropertyChanges { target: header; opacity: 1 }
       PropertyChanges { target: currentLevelSelection; opacity: 1 }
       name: "appLevels"
       StateChangeScript {
         script: {
           backButton.slideIn()
           more.slideIn()
         }
       }
     },
     State {
       PropertyChanges { target: header; opacity: 0 }
       PropertyChanges { target: currentLevelSelection; opacity: 0 }
       name: "exited"
       StateChangeScript {
         script: {
           backButton.slideOut()
           more.slideOut()
         }
       }
     },
     State {
       PropertyChanges { target: header; opacity: 1 }
       PropertyChanges { target: currentLevelSelection; opacity: 1 }
       name: "myDownloadedLevels"
       StateChangeScript {
         script: {
           backButton.slideIn()
           more.slideIn()
         }
       }
     },
     State {
       PropertyChanges { target: header; opacity: 1 }
       PropertyChanges { target: currentLevelSelection; opacity: 1 }
       name: "communityLevels"
       StateChangeScript {
         script: {
           backButton.slideIn()
           more.slideIn()
         }
       }
     }
   ]

   transitions: Transition {
     NumberAnimation {
       targets: [header,currentLevelSelection]
       duration: 900
       property: "opacity"
       easing.type: Easing.InOutQuad
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