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1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "../../SDL_internal.h"
22
23#if SDL_VIDEO_DRIVER_UIKIT
24
25#include "SDL.h"
26#include "SDL_uikitvideo.h"
27#include "SDL_uikitwindow.h"
28
29/* Display a UIKit message box */
30
31static SDL_bool s_showingMessageBox = SDL_FALSE;
32
33SDL_bool
34UIKit_ShowingMessageBox()
35{
36    return s_showingMessageBox;
37}
38
39static void
40UIKit_WaitUntilMessageBoxClosed(const SDL_MessageBoxData *messageboxdata, int *clickedindex)
41{
42    *clickedindex = messageboxdata->numbuttons;
43
44    @autoreleasepool {
45        /* Run the main event loop until the alert has finished */
46        /* Note that this needs to be done on the main thread */
47        s_showingMessageBox = SDL_TRUE;
48        while ((*clickedindex) == messageboxdata->numbuttons) {
49            [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
50        }
51        s_showingMessageBox = SDL_FALSE;
52    }
53}
54
55static BOOL
56UIKit_ShowMessageBoxAlertController(const SDL_MessageBoxData *messageboxdata, int *buttonid)
57{
58#ifdef __IPHONE_8_0
59    int i;
60    int __block clickedindex = messageboxdata->numbuttons;
61    const SDL_MessageBoxButtonData *buttons = messageboxdata->buttons;
62    UIWindow *window = nil;
63    UIWindow *alertwindow = nil;
64
65    if (![UIAlertController class]) {
66        return NO;
67    }
68
69    UIAlertController *alert;
70    alert = [UIAlertController alertControllerWithTitle:@(messageboxdata->title)
71                                                message:@(messageboxdata->message)
72                                         preferredStyle:UIAlertControllerStyleAlert];
73
74    for (i = 0; i < messageboxdata->numbuttons; i++) {
75        UIAlertAction *action;
76        UIAlertActionStyle style = UIAlertActionStyleDefault;
77
78        if (buttons[i].flags & SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT) {
79            style = UIAlertActionStyleCancel;
80        }
81
82        action = [UIAlertAction actionWithTitle:@(buttons[i].text)
83                                          style:style
84                                        handler:^(UIAlertAction *action) {
85                                            clickedindex = i;
86                                        }];
87        [alert addAction:action];
88    }
89
90    if (messageboxdata->window) {
91        SDL_WindowData *data = (__bridge SDL_WindowData *) messageboxdata->window->driverdata;
92        window = data.uiwindow;
93    }
94
95    if (window == nil || window.rootViewController == nil) {
96        alertwindow = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
97        alertwindow.rootViewController = [UIViewController new];
98        alertwindow.windowLevel = UIWindowLevelAlert;
99
100        window = alertwindow;
101
102        [alertwindow makeKeyAndVisible];
103    }
104
105    [window.rootViewController presentViewController:alert animated:YES completion:nil];
106    UIKit_WaitUntilMessageBoxClosed(messageboxdata, &clickedindex);
107
108    if (alertwindow) {
109        alertwindow.hidden = YES;
110    }
111
112    *buttonid = messageboxdata->buttons[clickedindex].buttonid;
113    return YES;
114#else
115    return NO;
116#endif /* __IPHONE_8_0 */
117}
118
119/* UIAlertView is deprecated in iOS 8+ in favor of UIAlertController. */
120#if __IPHONE_OS_VERSION_MIN_REQUIRED < 80000
121@interface SDLAlertViewDelegate : NSObject <UIAlertViewDelegate>
122
123@property (nonatomic, assign) int *clickedIndex;
124
125@end
126
127@implementation SDLAlertViewDelegate
128
129- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex
130{
131    if (_clickedIndex != NULL) {
132        *_clickedIndex = (int) buttonIndex;
133    }
134}
135
136@end
137#endif /* __IPHONE_OS_VERSION_MIN_REQUIRED < 80000 */
138
139static BOOL
140UIKit_ShowMessageBoxAlertView(const SDL_MessageBoxData *messageboxdata, int *buttonid)
141{
142    /* UIAlertView is deprecated in iOS 8+ in favor of UIAlertController. */
143#if __IPHONE_OS_VERSION_MIN_REQUIRED < 80000
144    int i;
145    int clickedindex = messageboxdata->numbuttons;
146    const SDL_MessageBoxButtonData *buttons = messageboxdata->buttons;
147    UIAlertView *alert = [[UIAlertView alloc] init];
148    SDLAlertViewDelegate *delegate = [[SDLAlertViewDelegate alloc] init];
149
150    alert.delegate = delegate;
151    alert.title = @(messageboxdata->title);
152    alert.message = @(messageboxdata->message);
153
154    for (i = 0; i < messageboxdata->numbuttons; i++) {
155        [alert addButtonWithTitle:@(buttons[i].text)];
156    }
157
158    delegate.clickedIndex = &clickedindex;
159
160    [alert show];
161
162    UIKit_WaitUntilMessageBoxClosed(messageboxdata, &clickedindex);
163
164    alert.delegate = nil;
165
166    *buttonid = messageboxdata->buttons[clickedindex].buttonid;
167    return YES;
168#else
169    return NO;
170#endif /* __IPHONE_OS_VERSION_MIN_REQUIRED < 80000 */
171}
172
173int
174UIKit_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid)
175{
176    BOOL success = NO;
177
178    @autoreleasepool {
179        success = UIKit_ShowMessageBoxAlertController(messageboxdata, buttonid);
180        if (!success) {
181            success = UIKit_ShowMessageBoxAlertView(messageboxdata, buttonid);
182        }
183    }
184
185    if (!success) {
186        return SDL_SetError("Could not show message box.");
187    }
188
189    return 0;
190}
191
192#endif /* SDL_VIDEO_DRIVER_UIKIT */
193
194/* vi: set ts=4 sw=4 expandtab: */
195