<html>
<body>
<webview nodeintegration src="zoom://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)
    }
    view.getZoomLevel((zoomLevel) => {
      view.getZoomFactor((zoomFactor) => {
        ipcRenderer.send('webview-zoom-level', zoomLevel, zoomFactor, view.canGoBack(), finalNavigation)
        if (!view.canGoBack() && !finalNavigation) {
          view.src = 'zoom://host2'
        } else if (!finalNavigation) {
          finalNavigation = true
          view.goBack()
        }
      })
    })
  })
</script>
</html>