/*

     File: AppController.m

 Abstract: Implements a simple camera browser application using the ImageCaptureCore framework.

  Version: 1.1

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 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

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 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

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 Copyright (C) 2012 Apple Inc. All Rights Reserved.

 */

#import "AppController.h"

@interface NSImageFromCGImageRef: NSValueTransformer {}

@end

@implementation NSImageFromCGImageRef

+ (Class)transformedValueClass      { return [NSImage class]; }

+ (BOOL)allowsReverseTransformation { return NO; }

- (id)transformedValue:(id)item

{

    if ( item )

        return  [[NSImage alloc] initWithCGImage:(CGImageRef)item size:NSZeroSize];

    else

        return nil;

}

@end

@implementation AppController

@synthesize cameras = mCameras;

- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender

{

    return YES;

}

#pragma mark -

#pragma mark Initialization & Cleanup methods

- (void)applicationDidFinishLaunching:(NSNotification*)notification

{

    mCameras = [[NSMutableArray alloc] initWithCapacity:0];

    // Get an instance of ICDeviceBrowser

    mDeviceBrowser = [[ICDeviceBrowser alloc] init];

    // Assign a delegate

    mDeviceBrowser.delegate = self;

    // Look for cameras in all available locations

    mDeviceBrowser.browsedDeviceTypeMask = mDeviceBrowser.browsedDeviceTypeMask | ICDeviceTypeMaskCamera

                                        | ICDeviceLocationTypeMaskLocal

                                        | ICDeviceLocationTypeMaskShared

                                        | ICDeviceLocationTypeMaskBonjour

                                        | ICDeviceLocationTypeMaskBluetooth

                                        | ICDeviceLocationTypeMaskRemote;

    // Start browsing for cameras

    [mDeviceBrowser start];

}

/*---------------------------------------------------------------------------------------------------- applicationWillTerminate: */

- (void)applicationWillTerminate:(NSNotification*)notification

{

    mDeviceBrowser.delegate = NULL;

    [mDeviceBrowser stop];

}

#pragma mark -

#pragma mark Getter methods

/*------------------------------------------------------------------------------------------------------------------ canDownload */

/* The canDownload property reports whether or not there are any images available for download. 

 */

- (BOOL)canDownload

{

    if ( [[mMediaFilesController selectedObjects] count] )

        return YES;

    else

        return NO;

}

#pragma mark -

#pragma mark Methods to download media files from the device

/*---------------------------------------------------------------------------------------------------------------- downloadFiles */

/* The downloadFiles method is called when the Download button is pressed to download all available 

 media files from the device. Once a file is successfully downloaded, the didDownloadFile method is also called.

 */

- (void)downloadFiles:(NSArray*)files

{

    NSDictionary* options = [NSDictionary dictionaryWithObject:[NSURL fileURLWithPath:[@"~/Pictures" stringByExpandingTildeInPath]] forKey:ICDownloadsDirectoryURL];

    for ( ICCameraFile* f in files )

    {

        [f.device requestDownloadFile:f options:options downloadDelegate:self didDownloadSelector:@selector(didDownloadFile:error:options:contextInfo:) contextInfo:NULL];

    }

}

/* Once a file is successfully downloaded, the didDownloadFile method is called from the downloadFiles method.

*/

- (void)didDownloadFile:(ICCameraFile*)file error:(NSError*)error options:(NSDictionary*)options contextInfo:(void*)contextInfo

{

    NSLog( @"didDownloadFile called with:\n" );

    NSLog( @"  file:        %@\n", file );

    NSLog( @"  error:       %@\n", error );

    NSLog( @"  options:     %@\n", options );

    NSLog( @"  contextInfo: %p\n", contextInfo );

}

#pragma mark -

#pragma mark ICDeviceBrowser delegate methods

/*--------------------------------------------------------------------------------------- deviceBrowser:didAddDevice:moreComing: */

/* This message is sent to the delegate when a device has been added. This code adds the device to the cameras array. 

 */

- (void)deviceBrowser:(ICDeviceBrowser*)browser didAddDevice:(ICDevice*)addedDevice moreComing:(BOOL)moreComing

{

    NSLog( @"deviceBrowser:didAddDevice:moreComing: \n%@\n", addedDevice );

    if ( addedDevice.type & ICDeviceTypeCamera )

    {

        addedDevice.delegate = self;

        // This triggers KVO messages to AppController

        // to add the new camera object to the cameras array.

        [[self mutableArrayValueForKey:@"cameras"] addObject:addedDevice];

    }

}

/*----------------------------------------------------------------------------------------------- deviceBrowser:didRemoveDevice: */

/* The required delegate method didRemoveDevice will handle the removal of camera devices. This message is sent to 

 the delegate to inform that a device has been removed.

 */

- (void)deviceBrowser:(ICDeviceBrowser*)browser didRemoveDevice:(ICDevice*)device moreGoing:(BOOL)moreGoing;

{

    NSLog( @"deviceBrowser:didRemoveDevice:moreGoing: \n%@\n", device );

    device.delegate = NULL;

    // This triggers KVO messages to AppController

    // to remove the camera object from the cameras array.

    [[self mutableArrayValueForKey:@"cameras"] removeObject:device];

}

#pragma mark -

#pragma mark ICDevice & ICCameraDevice delegate methods

/*------------------------------------------------------------------------------------------------------------- didRemoveDevice: */

/* A delegate of ICDevice must conform to ICDeviceDelegate protocol. The required delegate method didRemoveDevice 

 will handle the removal of camera devices. This message is sent to the delegate to inform that a device has been removed.

 */

- (void)didRemoveDevice:(ICDevice*)removedDevice

{

    NSLog( @"didRemoveDevice: \n%@\n", removedDevice );

    [mCamerasController removeObject:removedDevice];

}

@end