From 48e2764916b052f976a21a6ad3a3830aee29128d Mon Sep 17 00:00:00 2001
From: Tom Tromey <tom@tromey.com>
Date: Tue, 29 Sep 2015 12:28:05 -0600
Subject: [PATCH] add stop notifications

Fixes #38
---
 gui/__init__.py |  3 ++
 gui/notify.py   | 76 +++++++++++++++++++++++++++++++++++++++++++++++++
 gui/params.py   | 35 +++++++++++++++++++++++
 3 files changed, 114 insertions(+)
 create mode 100644 gui/notify.py

diff --git a/gui/__init__.py b/gui/__init__.py
index eea8e1c..07fdf90 100644
--- a/gui/__init__.py
+++ b/gui/__init__.py
@@ -22,3 +22,6 @@ import gui.commands
 import gui.params
 import gui.toplevel
 import gui.framecache
+
+# Hooks in to gdb.
+import gui.notify
diff --git a/gui/notify.py b/gui/notify.py
new file mode 100644
index 0000000..bc780b0
--- /dev/null
+++ b/gui/notify.py
@@ -0,0 +1,76 @@
+# Copyright (C) 2015 Tom Tromey <tom@tromey.com>
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Notifications
+
+import gdb
+import gui.params
+import gui.startup
+import time
+
+from gi.repository import Notify
+from gui.startup import in_gtk_thread, in_gdb_thread
+
+_initialized = False
+
+_last_time = None
+
+@in_gtk_thread
+def _show_notification(title, content):
+    global _initialized
+    if not _initialized:
+        _initialized = True
+        Notify.init("gdb")
+    n = Notify.Notification.new(title, content)
+    n.show()
+
+@in_gdb_thread
+def _on_stop(event):
+    global _last_time
+    t = _last_time
+    _last_time = None
+
+    if (t is None
+        or not gui.params.stop_notification.value
+        or time.clock() - t < gui.params.stop_notification_seconds.value):
+        return
+
+    if isinstance(event, gdb.ExitedEvent):
+        title = 'gdb - inferior exited'
+        if hasattr(event, 'exit_code'):
+            content = 'inferior exited with code ' + str(event.exit_code)
+        else:
+            content = 'inferior exited, code unavailable'
+    elif isinstance(event, gdb.BreakpointEvent):
+        title = 'gdb - inferior stopped'
+        content = ('inferior stopped at breakpoint '
+                   + str(event.breakpoints[0].number))
+    elif isinstance(event, gdb.SignalEvent):
+        title = 'gdb - inferior stopped'
+        content = 'inferior stopped with signal: ' + event.stop_signal
+    else:
+        title = 'gdb - inferior stopped'
+        content = 'inferior stopped, reason unknown'
+
+    gui.startup.send_to_gtk(lambda: _show_notification(title, content))
+
+@in_gdb_thread
+def _on_cont(event):
+    global _last_time
+    _last_time = time.clock()
+
+gdb.events.stop.connect(_on_stop)
+gdb.events.cont.connect(_on_cont)
+gdb.events.exited.connect(_on_stop)
diff --git a/gui/params.py b/gui/params.py
index 6ef155d..6f43c03 100644
--- a/gui/params.py
+++ b/gui/params.py
@@ -261,6 +261,39 @@ class _Tabs(_StoredParameter):
         gui.toplevel.state.set_tab_width(self.value)
         return ""
 
+class _StopNotification(_StoredParameter):
+    # Silly gdb requirement.
+    ""
+
+    set_doc = "Set whether stop notifications are displayed."
+    show_doc = "Show whether stop notifications are displayed."
+
+    def __init__(self):
+        super(_StopNotification, self).__init__('%s', 'stop-notification', True,
+                                                gdb.COMMAND_RUNNING,
+                                                gdb.PARAM_BOOLEAN)
+
+    @in_gdb_thread
+    def get_show_string(self, pvalue):
+        return "Whether stop notifications are displayed is: %s" % self.value
+
+class _StopNotificationSeconds(_StoredParameter):
+    # Silly gdb requirement.
+    ""
+
+    set_doc = "Set stop notification timeout in seconds."
+    show_doc = "Show stop notification timeout."
+
+    def __init__(self):
+        super(_StopNotificationSeconds, self).__init__('%s',
+                                                       'stop-notification-seconds',
+                                                       120,
+                                                       gdb.COMMAND_RUNNING,
+                                                       gdb.PARAM_ZINTEGER)
+
+    @in_gdb_thread
+    def get_show_string(self, pvalue):
+        return "Stop notifications are displayed after %d seconds." % self.value
 
 _SetBase()
 _SetTitleBase()
@@ -268,6 +301,8 @@ _ShowBase()
 _ShowTitleBase()
 source_theme = _Theme()
 font_manager = _Font()
+stop_notification = _StopNotification()
+stop_notification_seconds = _StopNotificationSeconds()
 
 _Title('source', '\\W{basename} [GDB Source @\\W{number}]')
 _Title('display', '\\W{command} [GDB Display @\\W{number}]')