[Bf-extensions-cvs] [05fe57e] temp-blend-utils: Add command_complete callback to subprocess helper

[Campbell Barton]

Commit: 05fe57e7ae47470d96f82361a7193d9a4f277cb2
Author: Campbell Barton
Date:   Fri Jan 29 16:25:08 2016 +1100
Branches: temp-blend-utils
https://developer.blender.org/rBA05fe57e7ae47470d96f82361a7193d9a4f277cb2

Add command_complete callback to subprocess helper

Useful for running cleanup operations when the subprocess is terminated.

===================================================================

M	io_blend_utils/bl_utils/subprocess_helper.py

===================================================================

diff --git a/io_blend_utils/bl_utils/subprocess_helper.py b/io_blend_utils/bl_utils/subprocess_helper.py
index 8133f6a..a19031b 100644
--- a/io_blend_utils/bl_utils/subprocess_helper.py
+++ b/io_blend_utils/bl_utils/subprocess_helper.py
@@ -36,6 +36,10 @@ class SubprocessHelper:
 
         command: List of arguments to pass to subprocess.Popen
         report_interval: Time in seconds between updating reports.
+
+        command_complete(returncode): Callback that runs
+        when the process has ended.
+        returncode is -1 if the process was terminated.
     """
 
     @staticmethod
@@ -107,6 +111,8 @@ class SubprocessHelper:
         wm.event_timer_remove(self._timer)
         window.cursor_set('DEFAULT')
 
+    def command_complete(self, returncode):
+        pass
 
     def modal(self, context, event):
         wm = context.window_manager
@@ -121,6 +127,7 @@ class SubprocessHelper:
             if p.poll() is not None:
                 self._report_output()
                 self._wm_exit(context)
+                self.command_complete(p.returncode)
                 return {'FINISHED'}
 
             self._report_output()
@@ -156,4 +163,5 @@ class SubprocessHelper:
     def cancel(self, context):
         self._wm_exit(context)
         self._process.kill()
+        self.command_complete(-1)