SDL  2.0
SDL_cocoamessagebox.m
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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_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  [alert beginSheetModalForWindow:nswindow modalDelegate:self didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:) contextInfo:nil];
61  while (clicked < 0) {
63  SDL_Delay(100);
64  }
65  [nswindow release];
66  } else {
67  clicked = [alert runModal];
68  }
69 }
70 
71 - (void) alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo
72 {
73  clicked = returnCode;
74 }
75 
76 @end
77 
78 
79 /* Display a Cocoa message box */
80 int
81 Cocoa_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid)
82 { @autoreleasepool
83 {
85 
86  NSAlert* alert = [[[NSAlert alloc] init] autorelease];
87 
88  if (messageboxdata->flags & SDL_MESSAGEBOX_ERROR) {
89  [alert setAlertStyle:NSCriticalAlertStyle];
90  } else if (messageboxdata->flags & SDL_MESSAGEBOX_WARNING) {
91  [alert setAlertStyle:NSWarningAlertStyle];
92  } else {
93  [alert setAlertStyle:NSInformationalAlertStyle];
94  }
95 
96  [alert setMessageText:[NSString stringWithUTF8String:messageboxdata->title]];
97  [alert setInformativeText:[NSString stringWithUTF8String:messageboxdata->message]];
98 
99  const SDL_MessageBoxButtonData *buttons = messageboxdata->buttons;
100  int i;
101  for (i = 0; i < messageboxdata->numbuttons; ++i) {
102  NSButton *button = [alert addButtonWithTitle:[NSString stringWithUTF8String:buttons[i].text]];
104  [button setKeyEquivalent:@"\r"];
105  } else if (buttons[i].flags & SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT) {
106  [button setKeyEquivalent:@"\033"];
107  } else {
108  [button setKeyEquivalent:@""];
109  }
110  }
111 
112  SDLMessageBoxPresenter* presenter = [[[SDLMessageBoxPresenter alloc] initWithParentWindow:messageboxdata->window] autorelease];
113 
114  [presenter performSelectorOnMainThread:@selector(showAlert:)
115  withObject:alert
116  waitUntilDone:YES];
117 
118  int returnValue = 0;
119  NSInteger clicked = presenter->clicked;
120  if (clicked >= NSAlertFirstButtonReturn) {
121  clicked -= NSAlertFirstButtonReturn;
122  *buttonid = buttons[clicked].buttonid;
123  } else {
124  returnValue = SDL_SetError("Did not get a valid `clicked button' id: %ld", (long)clicked);
125  }
126 
127  return returnValue;
128 }}
129 
130 #endif /* SDL_VIDEO_DRIVER_COCOA */
131 
132 /* 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:143
#define SDL_SetError
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:71
GLbitfield flags