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1///////////////////////////////////////////////////////////////////////////////
2// Name: cocoa/evtloop.mm
3// Purpose: implements wxEventLoop for Cocoa
4// Author: David Elliott
5// Modified by:
6// Created: 2003/10/02
7// RCS-ID: $Id$
8// Copyright: (c) 2003 David Elliott <dfe@cox.net>
065e208e 9// License: wxWidgets licence
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10///////////////////////////////////////////////////////////////////////////////
11
12#include "wx/wxprec.h"
13#ifndef WX_PRECOMP
14 #include "wx/log.h"
eb537cfb 15 #include "wx/app.h"
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16#endif //WX_PRECOMP
17
18#include "wx/evtloop.h"
19
20#import <AppKit/NSApplication.h>
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21#import <AppKit/NSEvent.h>
22#import <Foundation/NSRunLoop.h>
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23
24// ========================================================================
25// wxEventLoopImpl
26// ========================================================================
27
28class WXDLLEXPORT wxEventLoopImpl
29{
30public:
31 // ctor
32 wxEventLoopImpl() { SetExitCode(0); }
33
34 // set/get the exit code
35 void SetExitCode(int exitcode) { m_exitcode = exitcode; }
36 int GetExitCode() const { return m_exitcode; }
37
38private:
39 // the exit code of the event loop
40 int m_exitcode;
41};
42
43// ========================================================================
44// wxEventLoop
45// ========================================================================
46
47// ----------------------------------------------------------------------------
48// wxEventLoop running and exiting
49// ----------------------------------------------------------------------------
50
3754265e 51wxEventLoop *wxEventLoopBase::ms_activeLoop = NULL;
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52
53wxEventLoop::~wxEventLoop()
54{
55 wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
56}
57
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58int wxEventLoop::Run()
59{
60 // event loops are not recursive, you need to create another loop!
61 wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") );
62
63 wxEventLoop *oldLoop = ms_activeLoop;
64 ms_activeLoop = this;
65
66 m_impl = new wxEventLoopImpl;
67
68 [[NSApplication sharedApplication] run];
69
70 int exitcode = m_impl->GetExitCode();
71 delete m_impl;
72 m_impl = NULL;
73
74 ms_activeLoop = oldLoop;
75
76 return exitcode;
77}
78
79void wxEventLoop::Exit(int rc)
80{
81 wxCHECK_RET( IsRunning(), _T("can't call Exit() if not running") );
82
83 m_impl->SetExitCode(rc);
84
85 NSApplication *cocoaApp = [NSApplication sharedApplication];
48580976 86 wxLogTrace(wxTRACE_COCOA,wxT("wxEventLoop::Exit isRunning=%d"), (int)[cocoaApp isRunning]);
eb537cfb 87 wxTheApp->WakeUpIdle();
9670dfc4 88 /* Notes:
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89 If we're being called from idle time (which occurs while checking the
90 queue for new events) there may or may not be any events in the queue.
91 In order to successfully stop the event loop, at least one event must
92 be processed. To ensure this always happens, WakeUpIdle is called.
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93
94 If the application was active when closed then this is unnecessary
95 because it would receive a deactivate event anyway. However, if the
96 application was not active when closed, then no events would be
97 added to the queue by Cocoa and thus the application would wait
98 indefinitely for the next event.
99 */
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100 [cocoaApp stop: cocoaApp];
101}
102
103// ----------------------------------------------------------------------------
104// wxEventLoop message processing dispatching
105// ----------------------------------------------------------------------------
106
107bool wxEventLoop::Pending() const
108{
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109 // a pointer to the event is returned if there is one, or nil if not
110 return [[NSApplication sharedApplication]
111 nextEventMatchingMask: NSAnyEventMask
112 untilDate: nil /* Equivalent to [NSDate distantPast] */
113 inMode: NSDefaultRunLoopMode
114 dequeue: NO];
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115}
116
117bool wxEventLoop::Dispatch()
118{
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119 // This check is required by wxGTK but probably not really for wxCocoa
120 // Keep it here to encourage developers to write cross-platform code
f5e10026 121 wxCHECK_MSG( IsRunning(), false, _T("can't call Dispatch() if not running") );
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122 NSApplication *cocoaApp = [NSApplication sharedApplication];
123 // Block to retrieve an event then send it
124 if(NSEvent *event = [cocoaApp
125 nextEventMatchingMask:NSAnyEventMask
126 untilDate:[NSDate distantFuture]
127 inMode:NSDefaultRunLoopMode
128 dequeue: YES])
129 {
130 [cocoaApp sendEvent: event];
131 return true;
132 }
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133 return false;
134}
135