CODEWITHSUNDEEP
cocoanstextviewappkit
Justin
Justin

Reputation: 2142

Deselect text in an NSTextView programmatically?

I am using the following code to deselect an NSTextView, as suggested here. Unfortunately, nothing at all happens. I have tried what I know to debug it, but everything seems to be working correctly, but it doesn't affect the NSTextView.

The code:

// Sets the scrolling bounds and behavior. This might be useful, but I don't know
[[textView textContainer] setContainerSize:NSMakeSize(FLT_MAX, FLT_MAX)];
[[textView textContainer] setWidthTracksTextView:FALSE];

// The code for deselecting, beginning by making sure it is actually selected (for testing only, as strange as it is)

[textView setSelectable:TRUE];
[textView setDelegate:self];
[_window makeFirstResponder:textView];

NSText *fieldEditor = [_window fieldEditor:TRUE forObject:textView];
[fieldEditor setSelectedRange:NSMakeRange([[fieldEditor string] length],0)];
[fieldEditor setNeedsDisplay:YES];

Any ideas about why this doesn't work? I am sure my outlets are set properly because I can manipulate other things, such as it's string value.

Upvotes: 6

Views: 4626

Answers (6)

Hofi
Hofi

Reputation: 976

As suggested earlier setSelectedRange: will do the trick BUT!

If your goal is to completely remove the selection and the cursor too, f.e. if you subclass an NSTextView to support similar behavior like NSTextEdit has in case of firstResponder status change you should write:

- (BOOL)resignFirstResponder
{
    // Invalid range location will remove cursor too
    [self setSelectedRange:NSMakeRange(NSUIntegerMax, 0)];  
    return YES;
}
//------------------------------------------------------------------------------

- (BOOL)becomeFirstResponder
{
    [self setSelectedRange:NSMakeRange(0, self.string.length)];
    return YES;
}
//------------------------------------------------------------------------------

Upvotes: 2

aumanets
aumanets

Reputation: 3833

I've using this approach and it works perfectly:

[textView setSelectedRange:NSMakeRange(0, 0)];

Upvotes: 2

user1330493
user1330493

Reputation: 61

This almost worked for me;

[textView.window makeFirstResponder:nil];

However, I had trouble setting the first responder to nil. If I set it to any other view it seems to do as you want. 

[textView.window makeFirstResponder:[textView superview]];

Tested in 10.7 Lion.

Upvotes: 6

Francis McGrew
Francis McGrew

Reputation: 7272

I'm not sure NSTextViews use the field editor, have you tried calling the method on the text view directly?

[textView setSelectedRange:NSMakeRange(textView.string.length, 0)];

The range location can be adjusted to move the cursor to the start or end, for example. You may also want to check to make sure something is actually selected before calling this method.

EDIT:

From your comment it sounds like you just want it to resign first responder. You can do that manually by calling [textView.window makeFirstResponder:nil];

Upvotes: 8

Justin
Justin

Reputation: 2142

As a temporary solution, just until somebody comes up with a better idea, setHidden: can be used. I am sure this is not as efficient as is recommended, but it deselects the NSTextView.

Simply toggle it twice, like so:

[textView setHidden:TRUE];
[textView setHidden:FALSE];

Upvotes: -2

Ben
Ben

Reputation: 1302

[textView setDelegate:self];

I have a feeling that one of your delegate methods is preventing things from happening. See the documentation under "Managing the selection".

Upvotes: -2

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