master trunk of gnowsys-studio

1 files changed, 121 insertions, 0 deletions

diff --git a/gstudio/signals.py b/gstudio/signals.py
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+++ b/gstudio/signals.py
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+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# This project incorporates work covered by the following copyright and permission notice:  
+
+#    Copyright (c) 2009, Julien Fache
+#    All rights reserved.
+
+#    Redistribution and use in source and binary forms, with or without
+#    modification, are permitted provided that the following conditions
+#    are met:
+
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in
+#      the documentation and/or other materials provided with the
+#      distribution.
+#    * Neither the name of the author nor the names of other
+#      contributors may be used to endorse or promote products derived
+#      from this software without specific prior written permission.
+
+#    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+#    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+#    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+#    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+#    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+#    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+#    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+#    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+#    OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero 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 Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+
+"""Signal handlers of Gstudio"""
+import inspect
+from functools import wraps
+
+from django.db.models.signals import post_save
+
+from gstudio import settings
+
+
+def disable_for_loaddata(signal_handler):
+    """Decorator for disabling signals sent
+    by 'post_save' on loaddata command.
+    http://code.djangoproject.com/ticket/8399"""
+
+    @wraps(signal_handler)
+    def wrapper(*args, **kwargs):
+        for fr in inspect.stack():
+            if inspect.getmodulename(fr[1]) == 'loaddata':
+                return
+        signal_handler(*args, **kwargs)
+
+    return wrapper
+
+
+@disable_for_loaddata
+def ping_directories_handler(sender, **kwargs):
+    """Ping Directories when a nodetype is saved"""
+    nodetype = kwargs['instance']
+
+    if nodetype.is_visible and settings.SAVE_PING_DIRECTORIES:
+        from gstudio.ping import DirectoryPinger
+
+        for directory in settings.PING_DIRECTORIES:
+            DirectoryPinger(directory, [nodetype])
+
+
+@disable_for_loaddata
+def ping_external_urls_handler(sender, **kwargs):
+    """Ping Externals URLS when a nodetype is saved"""
+    nodetype = kwargs['instance']
+
+    if nodetype.is_visible and settings.SAVE_PING_EXTERNAL_URLS:
+        from gstudio.ping import ExternalUrlsPinger
+
+        ExternalUrlsPinger(nodetype)
+
+
+def disconnect_gstudio_signals():
+    """Disconnect all the signals provided by Gstudio"""
+    from gstudio.models import Nodetype
+
+    post_save.disconnect(
+        sender=Nodetype, dispatch_uid='gstudio.nodetype.post_save.ping_directories')
+    post_save.disconnect(
+        sender=Nodetype, dispatch_uid='gstudio.nodetype.post_save.ping_external_urls')