How to allow files uploading with WebView in Cocoa?

Question

WebView have a method called

- (void)webView:(WebView *)sender runOpenPanelForFileButtonWithResultListener:(id < WebOpenPanelResultListener >)resultListener

But there is almost 0 doc and details on it. Inside I display an open file dialog and get the selected file name.

Like this

- (void)webView:(WebView *)sender runOpenPanelForFileButtonWithResultListener:(id < WebOpenPanelResultListener >)resultListener
{       
    NSOpenPanel* openDlg = [NSOpenPanel openPanel];

    [openDlg setCanChooseFiles:YES];

    [openDlg setCanChooseDirectories:NO];

    // process the files.
    if ( [openDlg runModal] == NSOKButton )
    {
        NSString* fileString = [[openDlg URL]absoluteString];
        [resultListener chooseFilename:fileString]; 
    }

}

But then ?

What should I do ? On website, it show that I selected a file, but when you click on upload the website just return an error, like if no file is uploaded. Should I write the code that handle the file upload or what ?

I'm kinda lost...

Edit:

In fact I got it working.... By just alter the code from here: Cocoa webkit: how to get file upload / file system access in webkit a bit, as some part was deprecated

- (void)webView:(WebView *)sender runOpenPanelForFileButtonWithResultListener:(id < WebOpenPanelResultListener >)resultListener
{       
    // Create the File Open Dialog class.
    NSOpenPanel* openDlg = [NSOpenPanel openPanel];

    // Enable the selection of files in the dialog.
    [openDlg setCanChooseFiles:YES];

    // Enable the selection of directories in the dialog.
    [openDlg setCanChooseDirectories:NO];

    if ( [openDlg runModal] == NSOKButton )
    {
        NSArray* URLs = [openDlg URLs];
        NSMutableArray *files = [[NSMutableArray alloc]init];
        for (int i = 0; i <[URLs count]; i++) {
            NSString *filename = [[URLs objectAtIndex:i]relativePath];
            [files addObject:filename];
        }

        for(int i = 0; i < [files count]; i++ )
        {
            NSString* fileName = [files objectAtIndex:i];
            [resultListener chooseFilename:fileName]; 
        }
        [files release];
    }

}

Enjoy !

Answer 1

I followed Peter Hosey comment and wow, my code is now short and works the same

- (void)webView:(WebView *)sender runOpenPanelForFileButtonWithResultListener:(id < WebOpenPanelResultListener >)resultListener
{       
    // Create the File Open Dialog class.
    NSOpenPanel* openDlg = [NSOpenPanel openPanel];

    // Enable the selection of files in the dialog.
    [openDlg setCanChooseFiles:YES];

    // Enable the selection of directories in the dialog.
    [openDlg setCanChooseDirectories:NO];

    if ( [openDlg runModal] == NSOKButton )
    {
        NSArray* files = [[openDlg URLs]valueForKey:@"relativePath"];
        [resultListener chooseFilenames:files];
    }

}