/// <summary>
/// Default entry into managed code.
/// </summary>
/// <param name="__dirname">The directory name of the current module. This the same as the path.dirname() of the __filename.</param>
/// <returns></returns>
public async Task <object> Invoke(string __dirname)
{
if (console == null)
{
console = await WebSharpJs.NodeJS.Console.Instance();
}
try
{
app = await App.Instance();
// We use app.IsReady instead of listening for the 'ready'event.
// By the time we get here from the main.js module the 'ready' event has
// already fired.
if (await app.IsReady())
{
windowId = await CreateWindow(__dirname);
var ipcMain = await IpcMain.Create();
ipcMain.On("print-to-pdf",
new IpcMainEventListener
(
async(result) =>
{
var state = result.CallbackState as object[];
var ipcMainEvent = (IpcMainEvent)state[0];
var parms = state[1] as object[];
var win = await BrowserWindow.FromWebContents(ipcMainEvent.Sender);
System.Console.WriteLine($"Asynchronous message from: {await win.GetTitle()}");
// foreach (var parm in parms)
// System.Console.WriteLine($"\tparm: {parm}");
var contents = await win.GetWebContents();
await contents.PrintToPDF(new PrintToPDFOptions(),
new ScriptObjectCallback <Error, byte[]>(
async(cr) =>
{
await console.Log("callback in Print to Pdf");
var PDFState = cr.CallbackState as object[];
var error = PDFState[0] as Error;
if (error != null)
{
throw new Exception(error.Message);
}
var buffer = PDFState[1] as byte[];
string filename = Path.GetTempFileName() + ".pdf";
File.WriteAllBytes(filename, buffer);
var process = Process.Start(filename);
await ipcMainEvent.Sender.Send("wrote-pdf", filename);
}
)
);
}
)
);
}
await console.Log($"Loading: file://{__dirname}/index.html");
}
catch (Exception exc) { await console.Log($"extension exception: {exc.Message}"); }
return(windowId);
}
