/*

 Copyright (C) 2018 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 View controller object to host the UI for file information

 */

#import "FileViewController.h"

@interface FileViewController ()

@property (nonatomic, weak) IBOutlet NSImageView *fileIcon;

@property (nonatomic, weak) IBOutlet NSTextField *fileName;

@property (nonatomic, weak) IBOutlet NSTextField *fileSize;

@property (nonatomic, weak) IBOutlet NSTextField *modDate;

@property (nonatomic, weak) IBOutlet NSTextField *creationDate;

@property (nonatomic, weak) IBOutlet NSTextField *fileKindString;

@end

#pragma mark -

@implementation FileViewController

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

//  awakeFromNib

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

- (void)awakeFromNib

{

    // listen for changes in the url for this view

    [self addObserver:  self

                        forKeyPath:@"url"

                        options:(NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld) 

                        context:nil];

}

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

//  dealloc

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

- (void)dealloc

{

    [self removeObserver:self forKeyPath:@"url"];

}

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

//  observeValueForKeyPath:ofObject:change:context

//

//  Listen for changes in the file url.

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

- (void)observeValueForKeyPath: (NSString *)keyPath

                                ofObject:(id)object 

                                change:(NSDictionary *)change 

                                context:(void *)context

{

    // name

    self.fileName.stringValue = [[NSFileManager defaultManager] displayNameAtPath:self.url.path];

    // icon

    NSImage *iconImage = [[NSWorkspace sharedWorkspace] iconForFile:self.url.path];

    iconImage.size = NSMakeSize(64,64);

    self.fileIcon.image = iconImage;

    NSDictionary *attr = [[NSFileManager defaultManager] attributesOfItemAtPath:self.url.path error:nil];

    if (attr)

    {

        // file size

        NSNumber *theFileSize = attr[NSFileSize];

        self.fileSize.stringValue = [NSString stringWithFormat:@"%@ KB on disk", theFileSize.stringValue];

        // creation date

        NSDate *fileCreationDate = attr[NSFileCreationDate];

        self.creationDate.stringValue = fileCreationDate.description;

        // mod date

        NSDate *fileModDate = attr[NSFileModificationDate];

        self.modDate.stringValue = fileModDate.description;

    }

    // kind string

    NSString *kindStr;

    [self.url getResourceValue:&kindStr forKey:NSURLLocalizedTypeDescriptionKey error:nil];

    if (kindStr != nil)

    {

        self.fileKindString.stringValue = kindStr;

    }

}

@end