Is there any way to set the placeholder string for NSTextView
like that in NSTextField
? I have checked the property but couldn't find it. I have searched some questions but there isn't a proper explanation.
I found this answer online. Philippe Mougin made this.
static NSAttributedString *placeHolderString;
@implementation TextViewWithPlaceHolder
+(void)initialize
{
static BOOL initialized = NO;
if (!initialized)
{
NSColor *txtColor = [NSColor grayColor];
NSDictionary *txtDict = [NSDictionary dictionaryWithObjectsAndKeys:txtColor, NSForegroundColorAttributeName, nil];
placeHolderString = [[NSAttributedString alloc] initWithString:@"This is my placeholder text" attributes:txtDict];
}
}
- (BOOL)becomeFirstResponder
{
[self setNeedsDisplay:YES];
return [super becomeFirstResponder];
}
- (void)drawRect:(NSRect)rect
{
[super drawRect:rect];
if ([[self string] isEqualToString:@""] && self != [[self window] firstResponder])
[placeHolderString drawAtPoint:NSMakePoint(0,0)];
}
- (BOOL)resignFirstResponder
{
[self setNeedsDisplay:YES];
return [super resignFirstResponder];
}
@end