gitx/PBGitXMessageSheet.m

//
//  PBGitXMessageSheet.m
//  GitX
//
//  Created by BrotherBard on 7/4/10.
//  Copyright 2010 BrotherBard. All rights reserved.
//

#import "PBGitXMessageSheet.h"


#define MaxScrollViewHeight 125.0f


@interface PBGitXMessageSheet ()

- (void)setInfoString:(NSString *)info;
- (void)resizeWindow;

@end



@implementation PBGitXMessageSheet


@synthesize iconView;
@synthesize messageField;
@synthesize infoView;
@synthesize scrollView;


#pragma mark -
#pragma mark PBGitXMessageSheet

+ (void)beginMessageSheetForWindow:(NSWindow *)parentWindow withMessageText:(NSString *)message infoText:(NSString *)info
{
	PBGitXMessageSheet *sheet = [[self alloc] initWithWindowNibName:@"PBGitXMessageSheet"];
	[sheet beginMessageSheetForWindow:parentWindow withMessageText:message infoText:info];
}


+ (void)beginMessageSheetForWindow:(NSWindow *)parentWindow withError:(NSError *)error
{
	PBGitXMessageSheet *sheet = [[self alloc] initWithWindowNibName:@"PBGitXMessageSheet"];
	[sheet beginMessageSheetForWindow:parentWindow withMessageText:[error localizedDescription] infoText:[error localizedRecoverySuggestion]];
}


- (IBAction)closeMessageSheet:(id)sender
{
	[NSApp endSheet:[self window]];
	[[self window] orderOut:self];
}



#pragma mark Private

- (void)beginMessageSheetForWindow:(NSWindow *)parentWindow withMessageText:(NSString *)message infoText:(NSString *)info;
{
	[self window];
	
	[self.messageField setStringValue:message];
	[self setInfoString:info];
	[self resizeWindow];
	
	[NSApp beginSheet:[self window] modalForWindow:parentWindow modalDelegate:self didEndSelector:nil contextInfo:NULL];
}


- (void)setInfoString:(NSString *)info
{
	NSDictionary *attributes = [NSDictionary dictionaryWithObject:[NSFont labelFontOfSize:[NSFont smallSystemFontSize]]
														   forKey:NSFontAttributeName];
	NSAttributedString *attributedInfoString = [[NSAttributedString alloc] initWithString:info attributes:attributes];
	[[self.infoView textStorage] setAttributedString:attributedInfoString];
}


- (void)resizeWindow
{
	// resize for message text
	NSRect messageFrame = [self.messageField frame];
	NSSize boundingSize = messageFrame.size;
	boundingSize.height = 0.0f;
	NSAttributedString *attributedTitle = [self.messageField attributedStringValue];
	NSRect boundingRect = [attributedTitle boundingRectWithSize:boundingSize options:NSStringDrawingUsesLineFragmentOrigin];
	CGFloat heightDelta = boundingRect.size.height - messageFrame.size.height;
	if (heightDelta > 0.0f) {
		messageFrame.size.height += heightDelta;
		messageFrame.origin.y -= heightDelta;
		[self.messageField setFrame:messageFrame];
		
		NSRect scrollFrame = [self.scrollView frame];
		scrollFrame.size.height -= heightDelta;
		[self.scrollView setFrame:scrollFrame];
		
		NSRect windowFrame = [[self window] frame];
		windowFrame.size.height += heightDelta;
		[[self window] setFrame:windowFrame display:NO];
	}
	
	// resize for info text
	NSRect scrollFrame = [self.scrollView frame];
	boundingSize = [self.scrollView bounds].size;
	boundingSize.height = 0.0f;
	NSAttributedString *attributedInfo = [[self.infoView layoutManager] attributedString];
	boundingRect = [attributedInfo boundingRectWithSize:boundingSize options:NSStringDrawingUsesLineFragmentOrigin];
	heightDelta = boundingRect.size.height - scrollFrame.size.height;
	if (heightDelta > MaxScrollViewHeight)
		heightDelta = MaxScrollViewHeight;
	if (heightDelta > 0.0f) {
		NSRect windowFrame = [[self window] frame];
		windowFrame.size.height += heightDelta;
		[[self window] setFrame:windowFrame display:NO];
	}
	[self.infoView scrollRangeToVisible:NSMakeRange(0, 0)];
}


@end