Add GTK GUI frontend for whipper

whipper/program/cdrdao.py

@@ -3,6 +3,7 @@ import re
 import shutil
 import tempfile
 import subprocess
+import signal
 from subprocess import Popen, PIPE
 
 from whipper.common.common import truncate_filename
@@ -86,6 +87,7 @@ class ReadTOCTask(task.Task):
         self.toc_path = toc_path
         self._buffer = ""  # accumulate characters
         self._parser = ProgressParser()
+        self._aborted = False
 
         self.fd, self.tocfile = tempfile.mkstemp(
             suffix='.cdrdao.read-toc.whipper.task')
@@ -148,6 +150,11 @@ class ReadTOCTask(task.Task):
         self._done()
 
     def _done(self):
+        if self._aborted:
+            if os.path.exists(self.tocfile):
+                os.unlink(self.tocfile)
+            self.stop()
+            return
         self.setProgress(1.0)
         self.toc = TocFile(self.tocfile)
         self.toc.parse()
@@ -167,6 +174,11 @@ class ReadTOCTask(task.Task):
         self.stop()
         return
 
+    def abort(self):
+        self._aborted = True
+        if getattr(self, "_popen", None) is not None and self._popen.poll() is None:
+            os.kill(self._popen.pid, signal.SIGTERM)
+
 
 def DetectCdr(device):
     """Whether cdrdao detects a CD-R for ``device``."""