ITKit/ITMultilineTextFieldCell.m at master · ithinksw/ITKit · GitHub

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#import "ITMultilineTextFieldCell.h"

@implementation ITMultilineTextFieldCell

- (void)drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView *)controlView {
	if ([(id)[self objectValue] isKindOfClass:[NSArray class]]) {

		/*
			Okay, here's the different possibilities for the objectValue of this cell, and how they're displayed:

				NSArray of NSStrings - Draw first line with System Font, following lines with Small System Font
				NSArray of NSAttributedStrings - Draw as given
				NSArray of both - Draw each line as above!

			The number of lines is determined by the contents of the array...
		*/

		NSColor *defaultColor;
		NSMutableParagraphStyle *paragraphStyle = [[[NSParagraphStyle defaultParagraphStyle] mutableCopy] autorelease];
		[paragraphStyle setLineBreakMode:NSLineBreakByTruncatingTail];
		NSPoint cellPoint = cellFrame.origin;
		NSSize cellSize = cellFrame.size;

		NSRect secondaryLineRect;

		if ([self isHighlighted] && ([self highlightColorWithFrame:cellFrame inView:controlView]!=[NSColor secondarySelectedControlColor])) {
			defaultColor = [NSColor whiteColor];
		} else {
			defaultColor = [NSColor blackColor];
		}

		// Process the first line...
		{
			NSDictionary *firstLineAttributes = [NSDictionary dictionaryWithObjectsAndKeys:[NSFont boldSystemFontOfSize:[NSFont systemFontSize]], NSFontAttributeName, defaultColor, NSForegroundColorAttributeName, paragraphStyle, NSParagraphStyleAttributeName, nil];

			NSRect firstLineRect = NSMakeRect(cellPoint.x+5, cellPoint.y+1, cellSize.width-5, cellSize.height);

			id firstString = [(NSArray *)[self objectValue] objectAtIndex:0];
			NSMutableAttributedString *firstAttrString;

			if ([firstString isKindOfClass:[NSAttributedString class]]) {
				firstAttrString = [[[NSMutableAttributedString alloc] initWithAttributedString:firstString] autorelease];
				[firstAttrString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0,[firstAttrString length])];
				if ([defaultColor isEqual:[NSColor whiteColor]]) {
				[firstAttrString addAttribute:NSForegroundColorAttributeName value:defaultColor range:NSMakeRange(0,[firstAttrString length])];
				}
			} else if ([firstString isKindOfClass:[NSString class]]) {
				firstAttrString = [[[NSMutableAttributedString alloc] initWithString:firstString attributes:firstLineAttributes] autorelease];
			} else {
				firstAttrString = [[[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"Object (%@) is not a string", firstString] attributes:firstLineAttributes] autorelease];
			}

			[controlView lockFocus];

			[firstAttrString drawInRect:firstLineRect];

			[controlView unlockFocus];

			secondaryLineRect = NSMakeRect(cellPoint.x+5, (cellPoint.y+1+[firstAttrString size].height), cellSize.width-5, cellSize.height);
		}

		// Process the secondary lines
		{
			NSDictionary *secondaryLineAttributes = [NSDictionary dictionaryWithObjectsAndKeys:[NSFont systemFontOfSize:[NSFont smallSystemFontSize]], NSFontAttributeName, defaultColor, NSForegroundColorAttributeName, paragraphStyle, NSParagraphStyleAttributeName, nil];

			NSMutableArray *tMArray = [NSMutableArray arrayWithArray:(NSArray *)[self objectValue]];
			[tMArray removeObjectAtIndex:0]; // Remove the first line string... already handled that above!

			NSEnumerator *enumerator = [tMArray objectEnumerator];
			id secondaryString;

			while ((secondaryString = [enumerator nextObject])) {

				NSMutableAttributedString *secondaryAttrString;

				if ([secondaryString isKindOfClass:[NSAttributedString class]]) {
					secondaryAttrString = [[[NSMutableAttributedString alloc] initWithAttributedString:secondaryString] autorelease];
					[secondaryAttrString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0,[secondaryAttrString length])];
					if ([defaultColor isEqual:[NSColor whiteColor]]) {
					[secondaryAttrString addAttribute:NSForegroundColorAttributeName value:defaultColor range:NSMakeRange(0,[secondaryAttrString length])];
					}
				} else if ([secondaryString isKindOfClass:[NSString class]]) {
					secondaryAttrString = [[[NSMutableAttributedString alloc] initWithString:secondaryString attributes:secondaryLineAttributes] autorelease];
				} else {
					secondaryAttrString = [[[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"Object (%@) is not a string", secondaryString] attributes:secondaryLineAttributes] autorelease];
				}

				[controlView lockFocus];

				[secondaryAttrString drawInRect:secondaryLineRect];

				[controlView unlockFocus];

				secondaryLineRect.origin.y = secondaryLineRect.origin.y+[secondaryAttrString size].height; // modify the rect for the next loop, based on the size and location of the most recently processed line.

			}
		}
	} else {
		[super drawInteriorWithFrame:cellFrame inView:controlView];
	}
}

@end