1 files changed, 79 insertions, 0 deletions

diff --git a/src/FbTk/SignalHandler.cc b/src/FbTk/SignalHandler.cc
new file mode 100644
index 0000000..adbcbc0
--- /dev/null
+++ b/src/FbTk/SignalHandler.cc
@@ -0,0 +1,79 @@
+// SignalHandler.cc for Fluxbox Window Manager
+// Copyright (c) 2002 Henrik Kinnunen (fluxgen@linuxmail.org)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.        IN NO EVENT SHALL
+// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+// $Id: SignalHandler.cc,v 1.3 2002/12/01 13:42:14 rathnor Exp $
+
+#include "SignalHandler.hh"
+
+namespace FbTk {
+
+SignalEventHandler *SignalHandler::s_signal_handler[NSIG];
+
+SignalHandler::SignalHandler() {
+    // clear signal list
+    for (int i=0; i < NSIG; ++i)
+        s_signal_handler[i] = 0;
+}
+
+SignalHandler *SignalHandler::instance() {
+    static SignalHandler singleton;
+    return &singleton;
+}
+
+bool SignalHandler::registerHandler(int signum, SignalEventHandler *eh, 
+                                    SignalEventHandler **oldhandler_ret) {
+    // must be less than NSIG
+    if (signum >= NSIG)
+        return false;
+
+    // get old signal handler for this signum
+    if (oldhandler_ret != 0)
+        *oldhandler_ret = s_signal_handler[signum];
+        
+    struct sigaction sa;
+    // set callback
+    sa.sa_handler = SignalHandler::handleSignal;
+    sigemptyset (&sa.sa_mask);
+    sa.sa_flags = 0;
+        
+    if (sigaction(signum, &sa, 0) == -1)
+        return false;
+        
+    s_signal_handler[signum] = eh;
+        
+    return true;
+}
+
+void SignalHandler::removeHandler(int signum) {
+    if (signum < NSIG)
+        s_signal_handler[signum] = 0; // clear handler pointer
+}
+
+void SignalHandler::handleSignal(int signum) {
+    if (signum >= NSIG)
+        return;
+    // make sure we got a handler for this signal
+    if (s_signal_handler[signum] != 0) {
+        s_signal_handler[signum]->handleSignal(signum);
+    }
+}
+
+};