NSOpenPanel Sheet

Question

This is how I show an open panel as a floating window.

Can someone help me with launching the dashboard as a sheet? The window object is mWindow. Most of the standard code that I used depreciates.

NSOpenPanel *openPanel = [NSOpenPanel openPanel];
NSArray* fileTypes = [[NSArray alloc] initWithObjects:@"mp3", @"mp2", @"m4a", nil];

[openPanel setAllowsMultipleSelection: NO];
[openPanel setCanChooseDirectories:NO];
[openPanel setCanCreateDirectories:NO];
[openPanel setCanChooseFiles:YES];
[openPanel setAllowedFileTypes:fileTypes];

NSString * filePath = @"~/Desktop";
filePath = [filePath stringByExpandingTildeInPath];
NSURL *fileURL = [NSURL fileURLWithPath:filePath]; 
[openPanel setDirectoryURL:fileURL];

NSInteger clicked = [openPanel runModal];
if (clicked == NSFileHandlingPanelOKButton) {
    for (NSURL *url in [openPanel URLs]) {
        NSString *urlString = [url path];
        [input setStringValue:urlString];
        NSString *myString = [input stringValue];
        NSString *oldPath = [myString lastPathComponent];
        [inputDisplay setStringValue:oldPath];
    }
}

Answer 1

Pretty simple, it’s right in the docs, although you might have skipped it because the corresponding method is actually part of the NSSavePanel from which the NSOpenPanel is inherited.

Assuming you are targeting Snow Leopard or better and therefore have access to blocks, this is just a question that has replaced your runModal call with the following:

[openPanel beginSheetModalForWindow:mWindow completionHandler:^(NSInteger result) {

    if (result == NSFileHandlingPanelOKButton) {

        // Do something.
    }
}];