App.qml Example File

  /***************************************************************************
  **
  ** Copyright (C) 2017 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
  **
  ** This file is part of the examples of the QtBluetooth module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:BSD$
  ** You may use this file under the terms of the BSD license as follows:
  **
  ** "Redistribution and use in source and binary forms, with or without
  ** modification, are permitted provided that the following conditions are
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  **     from this software without specific prior written permission.
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  import QtQuick 2.5

  Item {
      id: app
      anchors.fill: parent
      opacity: 0.0

      Behavior on opacity { NumberAnimation { duration: 500 } }

      property var lastPages: []
      property int __currentIndex: 0

      function init()
      {
          opacity = 1.0
          showPage("Connect.qml")
      }

      function prevPage()
      {
          lastPages.pop()
          pageLoader.setSource(lastPages[lastPages.length-1])
          __currentIndex = lastPages.length-1;
      }

      function showPage(name)
      {
          lastPages.push(name)
          pageLoader.setSource(name)
          __currentIndex = lastPages.length-1;
      }

      TitleBar {
          id: titleBar
          currentIndex: __currentIndex

          onTitleClicked: {
              if (index < __currentIndex)
                  pageLoader.item.close()
          }
      }

      Loader {
          id: pageLoader
          anchors.left: parent.left
          anchors.right: parent.right
          anchors.top: titleBar.bottom
          anchors.bottom: parent.bottom

          onStatusChanged: {
              if (status === Loader.Ready)
              {
                  pageLoader.item.init();
                  pageLoader.item.forceActiveFocus()
              }
          }
      }

      Keys.onReleased: {
          switch (event.key) {
          case Qt.Key_Escape:
          case Qt.Key_Back: {
              if (__currentIndex > 0) {
                  pageLoader.item.close()
                  event.accepted = true
              } else {
                  Qt.quit()
              }
              break;
          }
          default: break;
          }
      }

      BluetoothAlarmDialog {
          id: btAlarmDialog
          anchors.fill: parent
          visible: !connectionHandler.alive
      }
  }