MyWindowController.m

/*
     File: MyWindowController.m 
 Abstract: main NSWindowController 
  Version: 1.1 
  
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 */
 
#import "MyWindowController.h"
#import "CustomImageViewController.h"
#import "CustomTableViewController.h"
#import "CustomVideoViewController.h"
 
@implementation MyWindowController
 
enum    // popup tag choices
{
    kImageView = 0,
    kTableView,
    kVideoView,
    kCameraView
};
 
NSString *const kViewTitle      = @"CustomImageView";
NSString *const kTableTitle     = @"CustomTableView";
NSString *const kVideoTitle     = @"CustomVideoView";
NSString *const kCameraTitle    = @"CustomCameraView";
 
// -------------------------------------------------------------------------------
//  initWithPath:newPath
// -------------------------------------------------------------------------------
- initWithPath:(NSString *)newPath
{
   return [super initWithWindowNibName:@"TestWindow"];
}
 
// -------------------------------------------------------------------------------
//  changeViewController:whichViewTag
//
//  Change the current NSViewController to a new one based on a tag obtained from
//  the NSPopupButton control.
// -------------------------------------------------------------------------------
- (void)changeViewController:(NSInteger)whichViewTag
{
    // we are about to change the current view controller,
    // this prepares our title's value binding to change with it
    [self willChangeValueForKey:@"viewController"];
    
    if ([myCurrentViewController view] != nil)
        [[myCurrentViewController view] removeFromSuperview];   // remove the current view
 
    if (myCurrentViewController != nil)
        [myCurrentViewController release];      // remove the current view controller
    
    switch (whichViewTag)
    {
        case 0: // swap in the "CustomImageViewController - NSImageView"
        {
            CustomImageViewController* imageViewController =
                [[CustomImageViewController alloc] initWithNibName:kViewTitle bundle:nil];
            if (imageViewController != nil)
            {
                
                myCurrentViewController = imageViewController;  // keep track of the current view controller
                [myCurrentViewController setTitle:kViewTitle];
            }
            break;
        }
        
        case 1: // swap in the "CustomTableViewController - NSTableView"
        {
            CustomTableViewController* tableViewController =
                [[CustomTableViewController alloc] initWithNibName:kTableTitle bundle:nil];
            if (tableViewController != nil)
            {
                myCurrentViewController = tableViewController;  // keep track of the current view controller
                [myCurrentViewController setTitle:kTableTitle];
            }
            break;
        }
        
        case 2: // swap in the "CustomVideoViewController - QTMovieView"
        {
            CustomVideoViewController* videoViewController =
                [[CustomVideoViewController alloc] initWithNibName:kVideoTitle bundle:nil];
            if (videoViewController != nil)
            {
                myCurrentViewController = videoViewController;  // keep track of the current view controller
                [myCurrentViewController setTitle:kVideoTitle];
            }
            break;
        }
        
        case 3: // swap in the "NSViewController - Quartz Composer iSight Camera"
        {
            NSViewController* cameraViewController =
                [[NSViewController alloc] initWithNibName:kCameraTitle bundle:nil];
            if (cameraViewController != nil)
            {
                myCurrentViewController = cameraViewController; // keep track of the current view controller
                [myCurrentViewController setTitle:kCameraTitle];
            }
            break;
        }
    }
    
    // embed the current view to our host view
    [myTargetView addSubview: [myCurrentViewController view]];
    
    // make sure we automatically resize the controller's view to the current window size
    [[myCurrentViewController view] setFrame: [myTargetView bounds]];
    
    // set the view controller's represented object to the number of subviews in that controller
    // (our NSTextField's value binding will reflect this value)
    [myCurrentViewController setRepresentedObject: [NSNumber numberWithUnsignedInt: [[[myCurrentViewController view] subviews] count]]];
    
    [self didChangeValueForKey:@"viewController"];  // this will trigger the NSTextField's value binding to change
}
 
// -------------------------------------------------------------------------------
//  awakeFromNib:
// -------------------------------------------------------------------------------
- (void)awakeFromNib
{
    [self changeViewController: kImageView];
}
 
// -------------------------------------------------------------------------------
//  viewChoicePopupAction
// -------------------------------------------------------------------------------
- (IBAction)viewChoicePopupAction:(id)sender
{
    [self changeViewController: [[sender selectedCell] tag]];
}
 
// -------------------------------------------------------------------------------
//  viewController
// -------------------------------------------------------------------------------
- (NSViewController*)viewController
{
    return myCurrentViewController;
}
 
@end