Displaying text in a NSScrollView (Swift)
It seems that the earlier beta versions (which featured Swift) of Xcode had some serious issues with this kind of outlets (as you can see here: http://swiftwtf.tumblr.com/post/88387419568/nstextview). However, since Xcode 6 Beta 6
it works.
textFieldOutlet.textStorage.mutableString.setString("Hello w0rld!")
To handle the String, creating an outlet for the textField
instead of the scrollView
itself is also a better practice.
In the following example, I added the scrollView in the interface builder as my starting point.
The following works if you your scrollView/textView is empty/blank OR if you need to append text in front of what is already in the scrollView/textView. If there is already text in the box, the new text is inserted in front of the existing text.
The documentView is an NSTextView
Swift 4.0
@IBOutlet weak var imageDestinationDirectory: NSScrollView!
...
let destinationText = "Text to display"
imageDestinationDirectory.documentView!.insertText(destinationText)
Here's how to do it programmatically, with auto layout:
class ViewController: NSViewController {
let scrollView = NSScrollView()
let textView = NSTextView()
override func viewDidLoad() {
super.viewDidLoad()
textView.maxSize = NSSize(width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude)
textView.autoresizingMask = .width
textView.isVerticallyResizable = true
textView.textContainer?.widthTracksTextView = true
view.addSubview(scrollView)
scrollView.translatesAutoresizingMaskIntoConstraints = false
scrollView.documentView = textView
NSLayoutConstraint.activate([
scrollView.topAnchor.constraint(equalTo: view.topAnchor),
scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
])
}
}
Apple's has an article about setting up a text view inside a scroll view programmatically. Text System User Interface Layer Programming Guide: Putting an NSTextView Object in an NSScrollView You should read that for greatest understanding, but here's the code:
NSScrollView *scrollview = [[NSScrollView alloc] initWithFrame:[[theWindow contentView] frame]];
NSSize contentSize = [scrollview contentSize];
[scrollview setBorderType:NSNoBorder];
[scrollview setHasVerticalScroller:YES];
[scrollview setHasHorizontalScroller:NO];
[scrollview setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
theTextView = [[NSTextView alloc] initWithFrame:NSMakeRect(0, 0, contentSize.width, contentSize.height)];
[theTextView setMinSize:NSMakeSize(0.0, contentSize.height)];
[theTextView setMaxSize:NSMakeSize(FLT_MAX, FLT_MAX)];
[theTextView setVerticallyResizable:YES];
[theTextView setHorizontallyResizable:NO];
[theTextView setAutoresizingMask:NSViewWidthSizable];
[[theTextView textContainer] setContainerSize:NSMakeSize(contentSize.width, FLT_MAX)];
[[theTextView textContainer] setWidthTracksTextView:YES];
[scrollview setDocumentView:theTextView];
[theWindow setContentView:scrollview];
[theWindow makeKeyAndOrderFront:nil];
[theWindow makeFirstResponder:theTextView];
You can then set the text of the text view by operating on its textStorage
object:
theTextView.textStorage.attributedString = attributedString;