/*

 Copyright (C) 2017 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Application delegate class ; opens/closes the Quick Look panel.

 */

@import Cocoa;

@import Quartz;  // for QLPreviewPanel

#import "AppDelegate.h"

@implementation AppDelegate

- (void)applicationDidFinishLaunching:(NSNotification *)notification

{

    if ([[NSDocumentController sharedDocumentController] documents].count == 0)

    {

        // open a new document window if there are none open

        [[NSDocumentController sharedDocumentController] newDocument:self];

    }

}

- (IBAction)togglePreviewPanel:(id)previewPanel

{

    if ([QLPreviewPanel sharedPreviewPanelExists] && [[QLPreviewPanel sharedPreviewPanel] isVisible])

    {

        [[QLPreviewPanel sharedPreviewPanel] orderOut:nil];

    }

    else

    {

        [[QLPreviewPanel sharedPreviewPanel] makeKeyAndOrderFront:nil];

    }

}

- (BOOL)validateMenuItem:(NSMenuItem *)menuItem

{

    SEL action = [menuItem action];

    if (action == @selector(togglePreviewPanel:))

    {

        if ([QLPreviewPanel sharedPreviewPanelExists] && [[QLPreviewPanel sharedPreviewPanel] isVisible])

        {

            [menuItem setTitle:NSLocalizedString(@"Close Quick Look panel", "")];

        }

        else

        {

            [menuItem setTitle:NSLocalizedString(@"Open Quick Look panel", "")];

        }

        return YES;

    }

    return NO;

}

@end