/*

 Copyright (C) 2015 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Window controller subclass.

 */

#import "GLEssentialsWindowController.h"

#import "GLEssentialsFullscreenWindow.h"

@interface GLEssentialsWindowController ()

{

    // Fullscreen window

    GLEssentialsFullscreenWindow *_fullscreenWindow;

    // Non-Fullscreen window (also the initial window)

    NSWindow* _standardWindow;

}

@end

@implementation GLEssentialsWindowController

- (instancetype)initWithWindow:(NSWindow *)window

{

    self = [super initWithWindow:window];

    if (self)

    {

        // Initialize to nil since it indicates app is not fullscreen

        _fullscreenWindow = nil;

    }

    return self;

}

- (void) goFullscreen

{

    // If app is already fullscreen...

    if(_fullscreenWindow)

    {

        //...don't do anything

        return;

    }

    // Allocate a new fullscreen window

    _fullscreenWindow = [[GLEssentialsFullscreenWindow alloc] init];

    // Resize the view to screensize

    NSRect viewRect = [_fullscreenWindow frame];

    // Set the view to the size of the fullscreen window

    [self.window.contentView setFrameSize: viewRect.size];

    // Set the view in the fullscreen window

    [_fullscreenWindow setContentView:self.window.contentView];

    _standardWindow = [self window];

    // Hide non-fullscreen window so it doesn't show up when switching out

    // of this app (i.e. with CMD-TAB)

    [_standardWindow orderOut:self];

    // Set controller to the fullscreen window so that all input will go to

    // this controller (self)

    [self setWindow:_fullscreenWindow];

    // Show the window and make it the key window for input

    [_fullscreenWindow makeKeyAndOrderFront:self];

}

- (void) goWindow

{

    // If controller doesn't have a full screen window...

    if(_fullscreenWindow == nil)

    {

        //...app is already windowed so don't do anything

        return;

    }

    // Get the rectangle of the original window

    NSRect viewRect = [_standardWindow frame];

    // Set the view rect to the new size

    [self.window.contentView setFrame:viewRect];

    // Set controller to the standard window so that all input will go to

    // this controller (self)

    [self setWindow:_standardWindow];

    // Set the content of the orginal window to the view

    [[self window] setContentView:_fullscreenWindow.contentView];

    // Show the window and make it the key window for input

    [[self window] makeKeyAndOrderFront:self];

    // Ensure we set fullscreen Window to nil so our checks for 

    // windowed vs. fullscreen mode elsewhere are correct

    _fullscreenWindow = nil;

}

- (void) keyDown:(NSEvent *)event

{

    unichar c = [[event charactersIgnoringModifiers] characterAtIndex:0];

    switch (c)

    {

        // Handle [ESC] key

        case 27:

            if(_fullscreenWindow != nil)

            {

                [self goWindow];

            }

            return;

        // Have f key toggle fullscreen

        case 'f':

            if(_fullscreenWindow == nil)

            {

                [self goFullscreen];

            }

            else

            {

                [self goWindow];

            }

            return;

    }

    // Allow other character to be handled (or not and beep)

    [super keyDown:event];

}

@end