PlanView.qml

                    enabled:            !masterController.offline && !masterController.syncInProgress
                    visible:            !QGroundControl.corePlugin.options.disableVehicleConnection
                    onClicked: {
                        dropPanel.hide()
                        _qgcView.showDialog(clearVehicleMissionDialog, text, _qgcView.showDialogDefaultWidth, StandardButton.Yes | StandardButton.Cancel)
                    }
                }

            }
        }
    }
} // QGCVIew