SDL  2.0
SDL_cocoamessagebox.m
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1 /*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 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_COCOA
24 
25 #include "SDL_events.h"
26 #include "SDL_timer.h"
27 #include "SDL_messagebox.h"
28 #include "SDL_cocoavideo.h"
29 
30 @interface SDLMessageBoxPresenter : NSObject {
31 @public
32  NSInteger clicked;
33  NSWindow *nswindow;
34 }
35 - (id) initWithParentWindow:(SDL_Window *)window;
36 - (void) alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo;
37 @end
38 
39 @implementation SDLMessageBoxPresenter
40 - (id) initWithParentWindow:(SDL_Window *)window
41 {
42  self = [super init];
43  if (self) {
44  clicked = -1;
45 
46  /* Retain the NSWindow because we'll show the alert later on the main thread */
47  if (window) {
48  nswindow = [((SDL_WindowData *) window->driverdata)->nswindow retain];
49  } else {
50  nswindow = NULL;
51  }
52  }
53 
54  return self;
55 }
56 
57 - (void)showAlert:(NSAlert*)alert
58 {
59  if (nswindow) {
60 #ifdef MAC_OS_X_VERSION_10_9
61  if ([alert respondsToSelector:@selector(beginSheetModalForWindow:completionHandler:)]) {
62  [alert beginSheetModalForWindow:nswindow completionHandler:^(NSModalResponse returnCode) {
63  clicked = returnCode;
64  }];
65  } else
66 #endif
67  {
68 #if MAC_OS_X_VERSION_MIN_REQUIRED < 1090
69  [alert beginSheetModalForWindow:nswindow modalDelegate:self didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:) contextInfo:nil];
70 #endif
71  }
72 
73  while (clicked < 0) {
75  SDL_Delay(100);
76  }
77 
78  [nswindow release];
79  } else {
80  clicked = [alert runModal];
81  }
82 }
83 
84 - (void) alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo
85 {
86  clicked = returnCode;
87 }
88 
89 @end
90 
91 
92 /* Display a Cocoa message box */
93 int
94 Cocoa_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid)
95 { @autoreleasepool
96 {
98 
99  NSAlert* alert = [[[NSAlert alloc] init] autorelease];
100 
101  if (messageboxdata->flags & SDL_MESSAGEBOX_ERROR) {
102  [alert setAlertStyle:NSAlertStyleCritical];
103  } else if (messageboxdata->flags & SDL_MESSAGEBOX_WARNING) {
104  [alert setAlertStyle:NSAlertStyleWarning];
105  } else {
106  [alert setAlertStyle:NSAlertStyleInformational];
107  }
108 
109  [alert setMessageText:[NSString stringWithUTF8String:messageboxdata->title]];
110  [alert setInformativeText:[NSString stringWithUTF8String:messageboxdata->message]];
111 
112  const SDL_MessageBoxButtonData *buttons = messageboxdata->buttons;
113  int i;
114  for (i = 0; i < messageboxdata->numbuttons; ++i) {
115  NSButton *button = [alert addButtonWithTitle:[NSString stringWithUTF8String:buttons[i].text]];
117  [button setKeyEquivalent:@"\r"];
118  } else if (buttons[i].flags & SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT) {
119  [button setKeyEquivalent:@"\033"];
120  } else {
121  [button setKeyEquivalent:@""];
122  }
123  }
124 
125  SDLMessageBoxPresenter* presenter = [[[SDLMessageBoxPresenter alloc] initWithParentWindow:messageboxdata->window] autorelease];
126 
127  [presenter performSelectorOnMainThread:@selector(showAlert:)
128  withObject:alert
129  waitUntilDone:YES];
130 
131  int returnValue = 0;
132  NSInteger clicked = presenter->clicked;
133  if (clicked >= NSAlertFirstButtonReturn) {
134  clicked -= NSAlertFirstButtonReturn;
135  *buttonid = buttons[clicked].buttonid;
136  } else {
137  returnValue = SDL_SetError("Did not get a valid `clicked button' id: %ld", (long)clicked);
138  }
139 
140  return returnValue;
141 }}
142 
143 #endif /* SDL_VIDEO_DRIVER_COCOA */
144 
145 /* vi: set ts=4 sw=4 expandtab: */
void Cocoa_RegisterApp(void)
GLuint id
SDL_Texture * button
#define SDL_PumpEvents
Individual button data.
const SDL_MessageBoxButtonData * buttons
MessageBox structure containing title, text, window, etc.
#define SDL_Delay
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:50
#define NULL
Definition: begin_code.h:164
#define SDL_SetError
GLbitfield flags
SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char const char SDL_SCANF_FORMAT_STRING const char return SDL_ThreadFunction const char void return Uint32 return Uint32 void
The type used to identify a window.
Definition: SDL_sysvideo.h:73