/*

     File: MyWindowController.m 

 Abstract: main NSWindowController 

  Version: 1.2 

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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";

@synthesize myCurrentViewController;

// -------------------------------------------------------------------------------

//  awakeFromNib

// -------------------------------------------------------------------------------

- (void)awakeFromNib

{

    // start by displaying the CustomImageViewController

    [self changeViewController:kImageView];

}

- (void)videoReady:(NSNotification *)notif

{

    // we have been notified by CustomVideoViewController that the video is ready to play

    [self.videoViewController start:YES];

}

// -------------------------------------------------------------------------------

//  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 valuer binding to change with it

    //

    [self willChangeValueForKey:@"viewController"];

    if ([self.myCurrentViewController view] != nil)

    {

        [[self.myCurrentViewController view] removeFromSuperview];  // remove the current view

        if ([self.myCurrentViewController isKindOfClass:[CustomVideoViewController class]])

        {

            // stop playing the video

            [(CustomVideoViewController *)self.myCurrentViewController start:NO];

            // no longer interested in this notification

            [[NSNotificationCenter defaultCenter] removeObserver:self name:kVideoReadyNotification object:nil];

        }

    }

    switch (whichViewTag)

    {

        case kImageView:    // swap in the "CustomImageViewController - NSImageView"

        {

            if (self.imageViewController == nil)

            {

                _imageViewController = [[CustomImageViewController alloc] initWithNibName:kViewTitle bundle:nil];

            }

            myCurrentViewController = self.imageViewController; // keep track of the current view controller

            [self.myCurrentViewController setTitle:kViewTitle];

            break;

        }

        case kTableView:    // swap in the "CustomTableViewController - NSTableView"

        {

            if (self.tableViewController == nil)

            {

                _tableViewController = [[CustomTableViewController alloc] initWithNibName:kTableTitle bundle:nil];

            }

            myCurrentViewController = self.tableViewController; // keep track of the current view controller

            [self.myCurrentViewController setTitle:kTableTitle];

            break;

        }

        case kVideoView:    // swap in the "CustomVideoViewController - QTMovieView"

        {

            if (self.videoViewController == nil)

            {

                _videoViewController = [[CustomVideoViewController alloc] initWithNibName:kVideoTitle bundle:nil];

            }

            // listen for when the video is ready to play (used for initial loading)

            [[NSNotificationCenter defaultCenter] addObserver:self

                                                     selector:@selector(videoReady:)

                                                         name:kVideoReadyNotification

                                                       object:nil];

            myCurrentViewController = self.videoViewController; // keep track of the current view controller

            [self.myCurrentViewController setTitle:kVideoTitle];

            // check if the video is loaded and ready

            if (self.videoViewController.videoIsReady)

            {

                [self.videoViewController start:YES];

            }

            break;

        }

        case kCameraView:   // swap in the "NSViewController - Quartz Composer iSight Camera"

        {

            if (self.cameraViewController == nil)

            {

                _cameraViewController = [[NSViewController alloc] initWithNibName:kCameraTitle bundle:nil];

            }

            myCurrentViewController = self.cameraViewController;    // keep track of the current view controller

            [self.myCurrentViewController setTitle:kCameraTitle];

            break;

        }

    }

    // embed the current view to our host view

    [myTargetView addSubview:[self.myCurrentViewController view]];

    // make sure we automatically resize the controller's view to the current window size

    [[self.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)

    [self.myCurrentViewController setRepresentedObject:[NSNumber numberWithUnsignedInteger:[[[self.myCurrentViewController view] subviews] count]]];

    [self didChangeValueForKey:@"viewController"];  // this will trigger the NSTextField's value binding to change

}

// -------------------------------------------------------------------------------

//  viewChoicePopupAction:sender

// -------------------------------------------------------------------------------

- (IBAction)viewChoicePopupAction:(id)sender

{

    [self changeViewController:[[sender selectedCell] tag]];

}

// -------------------------------------------------------------------------------

//  viewController

// -------------------------------------------------------------------------------

- (NSViewController *)viewController

{

    return self.myCurrentViewController;

}

// -------------------------------------------------------------------------------

//  dealloc

// -------------------------------------------------------------------------------

- (void)dealloc

{

    [_videoViewController release];

    [_tableViewController release];

    [_cameraViewController release];

    [_imageViewController release];

    [super dealloc];

}

@end