/*

  Simple DirectMedia Layer

  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied

  warranty.  In no event will the authors be held liable for any damages

  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,

  including commercial applications, and to alter it and redistribute it

  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not

     claim that you wrote the original software. If you use this software

     in a product, an acknowledgment in the product documentation would be

     appreciated but is not required.

  2. Altered source versions must be plainly marked as such, and must not be

     misrepresented as being the original software.

  3. This notice may not be removed or altered from any source distribution.

*/

#include "../../SDL_internal.h"

#if SDL_VIDEO_DRIVER_COCOA

#include "SDL_events.h"

#include "SDL_timer.h"

#include "SDL_messagebox.h"

#include "SDL_cocoavideo.h"

@interface SDLMessageBoxPresenter : NSObject {

@public

    NSInteger clicked;

    NSWindow *nswindow;

}

- (id) initWithParentWindow:(SDL_Window *)window;

- (void) alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo;

@end

@implementation SDLMessageBoxPresenter

- (id) initWithParentWindow:(SDL_Window *)window

{

    self = [super init];

    if (self) {

        clicked = -1;

        /* Retain the NSWindow because we'll show the alert later on the main thread */

        if (window) {

            nswindow = [((SDL_WindowData *) window->driverdata)->nswindow retain];

        } else {

            nswindow = NULL;

        }

    }

    return self;

}

- (void)showAlert:(NSAlert*)alert

{

    if (nswindow) {

        [alert beginSheetModalForWindow:nswindow modalDelegate:self didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:) contextInfo:nil];

        while (clicked < 0) {

            SDL_PumpEvents();

            SDL_Delay(100);

        }

        [nswindow release];

    } else {

        clicked = [alert runModal];

    }

}

- (void) alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo

{

    clicked = returnCode;

}

@end

/* Display a Cocoa message box */

int

Cocoa_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid)

{ @autoreleasepool

{

    Cocoa_RegisterApp();

    NSAlert* alert = [[[NSAlert alloc] init] autorelease];

    if (messageboxdata->flags & SDL_MESSAGEBOX_ERROR) {

        [alert setAlertStyle:NSCriticalAlertStyle];

    } else if (messageboxdata->flags & SDL_MESSAGEBOX_WARNING) {

        [alert setAlertStyle:NSWarningAlertStyle];

    } else {

        [alert setAlertStyle:NSInformationalAlertStyle];

    }

    [alert setMessageText:[NSString stringWithUTF8String:messageboxdata->title]];

    [alert setInformativeText:[NSString stringWithUTF8String:messageboxdata->message]];

    const SDL_MessageBoxButtonData *buttons = messageboxdata->buttons;

    int i;

    for (i = 0; i < messageboxdata->numbuttons; ++i) {

        NSButton *button = [alert addButtonWithTitle:[NSString stringWithUTF8String:buttons[i].text]];

        if (buttons[i].flags & SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT) {

            [button setKeyEquivalent:@"\r"];

        } else if (buttons[i].flags & SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT) {

            [button setKeyEquivalent:@"\033"];

        } else {

            [button setKeyEquivalent:@""];

        }

    }

    SDLMessageBoxPresenter* presenter = [[[SDLMessageBoxPresenter alloc] initWithParentWindow:messageboxdata->window] autorelease];

    [presenter performSelectorOnMainThread:@selector(showAlert:)

                                withObject:alert

                             waitUntilDone:YES];

    int returnValue = 0;

    NSInteger clicked = presenter->clicked;

    if (clicked >= NSAlertFirstButtonReturn) {

        clicked -= NSAlertFirstButtonReturn;

        *buttonid = buttons[clicked].buttonid;

    } else {

        returnValue = SDL_SetError("Did not get a valid `clicked button' id: %ld", (long)clicked);

    }

    return returnValue;

}}

#endif /* SDL_VIDEO_DRIVER_COCOA */

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