<html>
<body>
<webview nodeintegration src="app://host1" id="view" partition="webview-temp"/>
</body>
<script>
  const {ipcRenderer, webFrame} = require('electron')
  const view = document.getElementById('view')
  let finalNavigation = false
  view.addEventListener('dom-ready', () => {
    if (!finalNavigation && !view.canGoBack()) {
      view.setZoomLevel(2.0)
    }
    const zoomLevel = view.getZoomLevel()
    const zoomFactor = view.getZoomFactor()
    ipcRenderer.send('webview-zoom-level', zoomLevel, zoomFactor, view.canGoBack(), finalNavigation)
    if (!view.canGoBack() && !finalNavigation) {
      view.src = 'app://host2'
    } else if (!finalNavigation) {
      finalNavigation = true
      view.goBack()
    }
  })
</script>
</html>