/*
     File: ImageAndTextCell.m 
 Abstract: Subclass of NSTextFieldCell which can display text and an image simultaneously.
  
  Version: 1.1 
  
 Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple 
 Inc. ("Apple") in consideration of your agreement to the following 
 terms, and your use, installation, modification or redistribution of 
 this Apple software constitutes acceptance of these terms.  If you do 
 not agree with these terms, please do not use, install, modify or 
 redistribute this Apple software. 
  
 In consideration of your agreement to abide by the following terms, and 
 subject to these terms, Apple grants you a personal, non-exclusive 
 license, under Apple's copyrights in this original Apple software (the 
 "Apple Software"), to use, reproduce, modify and redistribute the Apple 
 Software, with or without modifications, in source and/or binary forms; 
 provided that if you redistribute the Apple Software in its entirety and 
 without modifications, you must retain this notice and the following 
 text and disclaimers in all such redistributions of the Apple Software. 
 Neither the name, trademarks, service marks or logos of Apple Inc. may 
 be used to endorse or promote products derived from the Apple Software 
 without specific prior written permission from Apple.  Except as 
 expressly stated in this notice, no other rights or licenses, express or 
 implied, are granted by Apple herein, including but not limited to any 
 patent rights that may be infringed by your derivative works or by other 
 works in which the Apple Software may be incorporated. 
  
 The Apple Software is provided by Apple on an "AS IS" basis.  APPLE 
 MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION 
 THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS 
 FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND 
 OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. 
  
 IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL 
 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, 
 MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED 
 AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), 
 STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE 
 POSSIBILITY OF SUCH DAMAGE. 
  
 Copyright (C) 2010 Apple Inc. All Rights Reserved. 
  
 */

#import "ImageAndTextCell.h"
//#import "BaseNode.h"

@implementation ImageAndTextCell

#define kIconImageSize		16.0

#define kImageOriginXOffset 3
#define kImageOriginYOffset 1

#define kTextOriginXOffset	2
#define kTextOriginYOffset	2
#define kTextHeightAdjust	4

// -------------------------------------------------------------------------------
//	init:
// -------------------------------------------------------------------------------
- (id)init
{
	self = [super init];
	
	// we want a smaller font
	[self setFont:[NSFont systemFontOfSize:[NSFont smallSystemFontSize]]];

	return self;
}

// -------------------------------------------------------------------------------
//	dealloc:
// -------------------------------------------------------------------------------
- (void)dealloc
{
    [image release];
    image = nil;
    [super dealloc];
}

// -------------------------------------------------------------------------------
//	copyWithZone:zone
// -------------------------------------------------------------------------------
- (id)copyWithZone:(NSZone*)zone
{
    ImageAndTextCell *cell = (ImageAndTextCell*)[super copyWithZone:zone];
    cell->image = [image retain];
    return cell;
}

// -------------------------------------------------------------------------------
//	setImage:anImage
// -------------------------------------------------------------------------------
- (void)setImage:(NSImage*)anImage
{
    if (anImage != image)
	{
        [image release];
        image = [anImage retain];
		[image setSize:NSMakeSize(kIconImageSize, kIconImageSize)];
    }
}

// -------------------------------------------------------------------------------
//	image:
// -------------------------------------------------------------------------------
- (NSImage*)image
{
    return image;
}

// -------------------------------------------------------------------------------
//	isGroupCell:
// -------------------------------------------------------------------------------
- (BOOL)isGroupCell
{
    return ([self image] == nil && [[self title] length] > 0);
}

// -------------------------------------------------------------------------------
//	titleRectForBounds:cellRect
//
//	Returns the proper bound for the cell's title while being edited
// -------------------------------------------------------------------------------
- (NSRect)titleRectForBounds:(NSRect)cellRect
{	
	// the cell has an image: draw the normal item cell
	NSSize imageSize;
	NSRect imageFrame;

	imageSize = [image size];
	NSDivideRect(cellRect, &imageFrame, &cellRect, 3 + imageSize.width, NSMinXEdge);

	imageFrame.origin.x += kImageOriginXOffset;
	imageFrame.origin.y -= kImageOriginYOffset;
	imageFrame.size = imageSize;
	
	imageFrame.origin.y += ceil((cellRect.size.height - imageFrame.size.height) / 2);
	
	NSRect newFrame = cellRect;
	newFrame.origin.x += kTextOriginXOffset;
	newFrame.origin.y += kTextOriginYOffset;
	newFrame.size.height -= kTextHeightAdjust;

	return newFrame;
}

// -------------------------------------------------------------------------------
//	editWithFrame:inView:editor:delegate:event
// -------------------------------------------------------------------------------
- (void)editWithFrame:(NSRect)aRect inView:(NSView*)controlView editor:(NSText*)textObj delegate:(id)anObject event:(NSEvent*)theEvent
{
	NSRect textFrame = [self titleRectForBounds:aRect];
	[super editWithFrame:textFrame inView:controlView editor:textObj delegate:anObject event:theEvent];
}

// -------------------------------------------------------------------------------
//	selectWithFrame:inView:editor:delegate:event:start:length
// -------------------------------------------------------------------------------
- (void)selectWithFrame:(NSRect)aRect inView:(NSView *)controlView editor:(NSText *)textObj delegate:(id)anObject start:(NSInteger)selStart length:(NSInteger)selLength
{
	NSRect textFrame = [self titleRectForBounds:aRect];
	[super selectWithFrame:textFrame inView:controlView editor:textObj delegate:anObject start:selStart length:selLength];
}

// -------------------------------------------------------------------------------
//	drawWithFrame:cellFrame:controlView:
// -------------------------------------------------------------------------------
- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView*)controlView
{
	if (image != nil)
	{
		// the cell has an image: draw the normal item cell
		NSSize imageSize;
        NSRect imageFrame;

        imageSize = [image size];
        NSDivideRect(cellFrame, &imageFrame, &cellFrame, 3 + imageSize.width, NSMinXEdge);
 
        imageFrame.origin.x += kImageOriginXOffset;
		imageFrame.origin.y -= kImageOriginYOffset;
        imageFrame.size = imageSize;
		
        if ([controlView isFlipped])
            imageFrame.origin.y += ceil((cellFrame.size.height + imageFrame.size.height) / 2);
        else
            imageFrame.origin.y += ceil((cellFrame.size.height - imageFrame.size.height) / 2);
		[image compositeToPoint:imageFrame.origin operation:NSCompositeSourceOver];

		NSRect newFrame = cellFrame;
		newFrame.origin.x += kTextOriginXOffset;
		newFrame.origin.y += kTextOriginYOffset;
		newFrame.size.height -= kTextHeightAdjust;
		[super drawWithFrame:newFrame inView:controlView];
    }
	else
	{
		if ([self isGroupCell])
		{
			// Center the text in the cellFrame, and call super to do thew ork of actually drawing. 
			CGFloat yOffset = floor((NSHeight(cellFrame) - [[self attributedStringValue] size].height) / 2.0);
			cellFrame.origin.y += yOffset;
			cellFrame.size.height -= (kTextOriginYOffset*yOffset);
			[super drawWithFrame:cellFrame inView:controlView];
		}
	}
}

// -------------------------------------------------------------------------------
//	cellSize:
// -------------------------------------------------------------------------------
- (NSSize)cellSize
{
    NSSize cellSize = [super cellSize];
    cellSize.width += (image ? [image size].width : 0) + 3;
    return cellSize;
}

// -------------------------------------------------------------------------------
//	hitTestForEvent:
//
//	In 10.5, we need you to implement this method for blocking drag and drop of a given cell.
//	So NSCell hit testing will determine if a row can be dragged or not.
//
//	NSTableView calls this cell method when starting a drag, if the hit cell returns
//	NSCellHitTrackableArea, the particular row will be tracked instead of dragged.
//
// -------------------------------------------------------------------------------
//- (NSUInteger)hitTestForEvent:(NSEvent *)event inRect:(NSRect)cellFrame ofView:(NSView *)controlView
//{
//	NSInteger result = NSCellHitContentArea;
//	
//	NSOutlineView* hostingOutlineView = (NSOutlineView*)[self controlView];
//	if (hostingOutlineView)
//	{
//		NSInteger selectedRow = [hostingOutlineView selectedRow];
//		BaseNode* node = [[hostingOutlineView itemAtRow:selectedRow] representedObject];
//
//		if (![node isDraggable])	// is the node isDraggable (i.e. non-file system based objects)
//			result = NSCellHitTrackableArea;
//	}
//		
//	return result;
//}

@end