SwapView.m

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/*--------------------------------------------------------------------------
 *
 * 	You may freely copy, distribute, and reuse the code in this example.
 * 	SHL Systemhouse disclaims any warranty of any kind, expressed or  
 *	implied, as to its fitness for any particular use.
 *
 *
 *	SwapView
 *
 *	Inherits From:		View
 *
 *	Conforms To:		none
 *
 *	Declared In:		SwapView.h
 *
 *------------------------------------------------------------------------*/

#import "SwapView.h"



@implementation SwapView

- initFrame: (const NXRect *) theFrame
{
	[super initFrame:theFrame];
	[self setAutoresizeSubviews:YES];
	currentPanel = nil;
	currentView = nil;
	return self;
}

- currentPanel
{
	return currentPanel;
}

- swap: storagePanel;
{
	id
		aView; 

	if (storagePanel != currentPanel)
		{
		aView = [currentPanel contentView];
		[self swapView:[currentPanel contentView]];
		[currentPanel setContentView:aView];
		currentPanel = storagePanel;
		}

	return self;
}

- swapView: newView;
{
	if (newView != currentView)
		{
		[currentView removeFromSuperview];
		currentView = newView;
		[currentView setFrame:&frame];
		[currentView moveTo:0.0 :0.0];
		[self addSubview:currentView];
		[[self window] display];
		}

	return self;
}

@end

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.