Extremely simple implementation of wxEventLoop using wxGTK as a skeleton

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24063 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/cocoa/evtloop.mm b/src/cocoa/evtloop.mm
new file mode 100644 (file)
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+++ b/src/cocoa/evtloop.mm
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+///////////////////////////////////////////////////////////////////////////////
+// Name:        cocoa/evtloop.mm
+// Purpose:     implements wxEventLoop for Cocoa
+// Author:      David Elliott
+// Modified by:
+// Created:     2003/10/02
+// RCS-ID:      $Id$
+// Copyright:   (c) 2003 David Elliott <dfe@cox.net>
+// License:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#include "wx/wxprec.h"
+#ifndef WX_PRECOMP
+    #include "wx/log.h"
+#endif //WX_PRECOMP
+
+#include "wx/evtloop.h"
+
+#import <AppKit/NSApplication.h>
+
+// ========================================================================
+// wxEventLoopImpl
+// ========================================================================
+
+class WXDLLEXPORT wxEventLoopImpl
+{
+public:
+    // ctor
+    wxEventLoopImpl() { SetExitCode(0); }
+
+    // set/get the exit code
+    void SetExitCode(int exitcode) { m_exitcode = exitcode; }
+    int GetExitCode() const { return m_exitcode; }
+
+private:
+    // the exit code of the event loop
+    int m_exitcode;
+};
+
+// ========================================================================
+// wxEventLoop
+// ========================================================================
+
+// ----------------------------------------------------------------------------
+// wxEventLoop running and exiting
+// ----------------------------------------------------------------------------
+
+wxEventLoop *wxEventLoop::ms_activeLoop = NULL;
+
+wxEventLoop::~wxEventLoop()
+{
+    wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
+}
+
+bool wxEventLoop::IsRunning() const
+{
+    return m_impl;
+}
+
+int wxEventLoop::Run()
+{
+    // event loops are not recursive, you need to create another loop!
+    wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") );
+
+    wxEventLoop *oldLoop = ms_activeLoop;
+    ms_activeLoop = this;
+
+    m_impl = new wxEventLoopImpl;
+
+    [[NSApplication sharedApplication] run];
+
+    int exitcode = m_impl->GetExitCode();
+    delete m_impl;
+    m_impl = NULL;
+
+    ms_activeLoop = oldLoop;
+
+    return exitcode;
+}
+
+void wxEventLoop::Exit(int rc)
+{
+    wxCHECK_RET( IsRunning(), _T("can't call Exit() if not running") );
+
+    m_impl->SetExitCode(rc);
+
+    NSApplication *cocoaApp = [NSApplication sharedApplication];
+    wxLogDebug("wxEventLoop::Exit isRunning=%d", (int)[cocoaApp isRunning]);
+    [cocoaApp stop: cocoaApp];
+}
+
+// ----------------------------------------------------------------------------
+// wxEventLoop message processing dispatching
+// ----------------------------------------------------------------------------
+
+bool wxEventLoop::Pending() const
+{
+    return 0;
+}
+
+bool wxEventLoop::Dispatch()
+{
+    wxCHECK_MSG( IsRunning(), false, _T("can't call Dispatch() if not running") );
+    return false;
+}
+