Added UIKit implementation of SDL messagebox

src/video/uikit/SDL_uikitmessagebox.m

@@ -0,0 +1,101 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2012 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_config.h"
+
+#if SDL_VIDEO_DRIVER_UIKIT
+
+#include "SDL.h"
+#include "SDL_uikitvideo.h"
+
+
+/* Display a UIKit message box */
+
+
+@interface UIKit_UIAlertViewDelegate : NSObject <UIAlertViewDelegate> {
+@private
+    int *clickedButtonIndex;
+}
+
+- (id)initWithButtonIndex:(int *)_buttonIndex;
+- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex;
+
+@end
+
+@implementation UIKit_UIAlertViewDelegate
+
+- (id)initWithButtonIndex:(int *)buttonIndex
+{
+    self = [self init];
+    if (self == nil) {
+        return nil;
+    }
+    self->clickedButtonIndex = buttonIndex;
+    
+    return self;
+}
+
+- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex;
+{
+    *clickedButtonIndex = buttonIndex;
+}
+
+@end // UIKit_UIAlertViewDelegate
+
+
+int
+UIKit_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid)
+{
+    int clicked;
+    
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+
+    UIAlertView* alert = [[UIAlertView alloc] init];
+
+    alert.title = [[NSString alloc] initWithUTF8String:messageboxdata->title];
+    alert.message = [[NSString alloc] initWithUTF8String:messageboxdata->message];
+    alert.delegate = [[UIKit_UIAlertViewDelegate alloc] initWithButtonIndex:&clicked];
+
+    const SDL_MessageBoxButtonData *buttons = messageboxdata->buttons;
+    int i;
+    for (i = 0; i < messageboxdata->numbuttons; ++i) {
+        [alert addButtonWithTitle:[[NSString alloc] initWithUTF8String:buttons[i].text]];
+    }
+
+    // Set up for showing the alert
+    clicked = messageboxdata->numbuttons;
+
+    [alert show];
+    
+    // Run the main event loop until the alert has finished
+    // Note that this needs to be done on the main thread
+    while (clicked == messageboxdata->numbuttons) {
+        [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
+    }
+    *buttonid = messageboxdata->buttons[clicked].buttonid;
+
+    [pool release];
+
+    return 0;
+}
+
+#endif /* SDL_VIDEO_DRIVER_UIKIT */
+
+/* vi: set ts=4 sw=4 expandtab: */