Initial commit

Change-Id: Ie79f257c46a2c50abdd7ce63bfeceaad976ca878

.gitignore

@@ -0,0 +1 @@
+*.pyc

LICENSE

@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

README.rst

@@ -0,0 +1,111 @@
+Gertty
+======
+
+Gertty is a console-based interface to the Gerrit Code Review system.
+
+As compared to the web interface, the main advantages are:
+
+ * Workflow -- the interface is designed to support a workflow similar
+   to reading network news or mail.  In particular, it is designed to
+   deal with a large number of review requests across a large number
+   of projects.
+
+ * Offline Use -- Gertty syncs information about changes in subscribed
+   projects to a local database and local git repos.  All review
+   operations are performed against that database and then synced back
+   to Gerrit.
+
+ * Speed -- user actions modify locally cached content and need not
+   wait for server interaction.
+
+ * Convenience -- because Gertty downloads all changes to local git
+   repos, a single command instructs it to checkout a change into that
+   repo for detailed examination or testing of larger changes.
+
+Usage
+-----
+
+Create a file at ``~/.gerttyrc`` with the following contents::
+
+  [gerrit]
+  url=https://review.example.org/
+  username=<gerrit username>
+  password=<gerrit password>
+  git_root=~/git/
+
+You can generate or retrieve your Gerrit password by navigating to
+Settings, then HTTP Password.  Set ``git_root`` to a directory where
+Gertty should find or clone git repositories for your projects.
+
+If your Gerrit uses a self-signed certificate, you can add::
+
+  verify_ssl=False
+
+To the section.
+
+The config file is designed to support multiple Gerrit instances, but
+currently, only the first one is used.
+
+After installing the requirements (listed in requirements.txt), you
+should be able to simply run Gertty.  You will need to start by
+subscribing to some projects.  Use 'l' to list all of the projects and
+then 's' to subscribe to them.
+
+In general, pressing the F1 key will show help text on any screen, and
+ESC will take you to the previous screen.
+
+To select text (e.g., to copy to the clipboard), hold Shift while
+selecting the text.
+
+Philosophy
+----------
+
+Gertty is based on the following precepts which should inform changes
+to the program:
+
+* Support large numbers of review requests across large numbers of
+  projects.  Help the user prioritize those reviews.
+
+* Adopt a news/mailreader-like workflow in support of the above.
+  Being able to subscribe to projects, mark reviews as "read" without
+  reviewing, etc, are all useful concepts to support a heavy review
+  load (they have worked extremely well in supporting people who
+  read/write a lot of mail/news).
+
+* Support off-line use.  Gertty should be completely usable off-line
+  with reliable syncing between local data and Gerrit when a
+  connection is available (just like git or mail or news).
+
+* Ample use of color.  Unlike a web interface, a good text interface
+  relies mostly on color and precise placement rather than whitespace
+  and decoration to indicate to the user the purpose of a given piece
+  of information.  Gertty should degrade well to 16 colors, but more
+  (88 or 256) may be used.
+
+* Keyboard navigation (with easy-to-remember commands) should be
+  considered the primary mode of interaction.  Mouse interaction
+  should also be supported.
+
+* The navigation philosophy is a stack of screens, where each
+  selection pushes a new screen onto the stack, and ESC pops the
+  screen off.  This makes sense when drilling down to a change from
+  lists, but also supports linking from change to change (via commit
+  messages or comments) and navigating back intuitive (it matches
+  expectations set by the web browsers).
+
+Contributing
+------------
+
+To browse the latest code, see: https://git.openstack.org/cgit/stackforge/gertty/tree/
+To clone the latest code, use `git clone git://git.openstack.org/stackforge/gertty`
+
+Bugs are handled at: https://storyboard.openstack.org/
+
+Code reviews are handled by gerrit at: https://review.openstack.org
+
+Use `git review` to submit patches (after creating a gerrit account
+that links to your launchpad account). Example::
+
+    # Do your commits
+    $ git review
+    # Enter your username if prompted

gertty/config.py

@@ -0,0 +1,46 @@
+# Copyright 2014 OpenStack Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import os
+import ConfigParser
+
+
+DEFAULT_CONFIG_PATH='~/.gerttyrc'
+
+class Config(object):
+    def __init__(self, server=None, path=DEFAULT_CONFIG_PATH):
+        self.path = os.path.expanduser(path)
+        self.config = ConfigParser.RawConfigParser()
+        self.config.read(self.path)
+        if server is None:
+            server = self.config.sections()[0]
+        self.server = server
+        self.url = self.config.get(server, 'url')
+        self.username = self.config.get(server, 'username')
+        self.password = self.config.get(server, 'password')
+        if self.config.has_option(server, 'verify_ssl'):
+            self.verify_ssl = self.config.getboolean(server, 'verify_ssl')
+        else:
+            self.verify_ssl = True
+        if not self.verify_ssl:
+            os.environ['GIT_SSL_NO_VERIFY']='true'
+        self.git_root = os.path.expanduser(self.config.get(server, 'git_root'))
+        if self.config.has_option(server, 'dburi'):
+            self.dburi = self.config.get(server, 'dburi')
+        else:
+            self.dburi = 'sqlite:///' + os.path.expanduser('~/.gertty.db')
+        if self.config.has_option(server, 'log_file'):
+            self.log_file = os.path.expanduser(self.config.get(server, 'log_file'))
+        else:
+            self.log_file = os.path.expanduser('~/.gertty.log')

gertty/db.py

@@ -0,0 +1,446 @@
+# Copyright 2014 OpenStack Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import sqlalchemy
+from sqlalchemy import create_engine, MetaData, Table, Column, Integer, String, Boolean, DateTime, Text, select, func
+from sqlalchemy.schema import ForeignKey
+from sqlalchemy.orm import mapper, sessionmaker, relationship, column_property, scoped_session
+from sqlalchemy.orm.session import Session
+from sqlalchemy.sql.expression import and_
+
+metadata = MetaData()
+project_table = Table(
+    'project', metadata,
+    Column('key', Integer, primary_key=True),
+    Column('name', String(255), index=True, unique=True, nullable=False),
+    Column('subscribed', Boolean, index=True, default=False),
+    Column('description', Text, nullable=False, default=''),
+    )
+change_table = Table(
+    'change', metadata,
+    Column('key', Integer, primary_key=True),
+    Column('project_key', Integer, ForeignKey("project.key"), index=True),
+    Column('id', String(255), index=True, unique=True, nullable=False),
+    Column('number', Integer, index=True, unique=True, nullable=False),
+    Column('branch', String(255), index=True, nullable=False),
+    Column('change_id', String(255), index=True, nullable=False),
+    Column('topic', String(255), index=True),
+    Column('owner', String(255), index=True),
+    Column('subject', Text, nullable=False),
+    Column('created', DateTime, index=True, nullable=False),
+    Column('updated', DateTime, index=True, nullable=False),
+    Column('status', String(8), index=True, nullable=False),
+    Column('hidden', Boolean, index=True, nullable=False),
+    Column('reviewed', Boolean, index=True, nullable=False),
+    )
+revision_table = Table(
+    'revision', metadata,
+    Column('key', Integer, primary_key=True),
+    Column('change_key', Integer, ForeignKey("change.key"), index=True),
+    Column('number', Integer, index=True, nullable=False),
+    Column('message', Text, nullable=False),
+    Column('commit', String(255), nullable=False),
+    Column('parent', String(255), nullable=False),
+    )
+message_table = Table(
+    'message', metadata,
+    Column('key', Integer, primary_key=True),
+    Column('revision_key', Integer, ForeignKey("revision.key"), index=True),
+    Column('id', String(255), index=True), #, unique=True, nullable=False),
+    Column('created', DateTime, index=True, nullable=False),
+    Column('name', String(255)),
+    Column('message', Text, nullable=False),
+    Column('pending', Boolean, index=True, nullable=False),
+    )
+comment_table = Table(
+    'comment', metadata,
+    Column('key', Integer, primary_key=True),
+    Column('revision_key', Integer, ForeignKey("revision.key"), index=True),
+    Column('id', String(255), index=True), #, unique=True, nullable=False),
+    Column('in_reply_to', String(255)),
+    Column('created', DateTime, index=True, nullable=False),
+    Column('name', String(255)),
+    Column('file', Text, nullable=False),
+    Column('parent', Boolean, nullable=False),
+    Column('line', Integer),
+    Column('message', Text, nullable=False),
+    Column('pending', Boolean, index=True, nullable=False),
+    )
+label_table = Table(
+    'label', metadata,
+    Column('key', Integer, primary_key=True),
+    Column('change_key', Integer, ForeignKey("change.key"), index=True),
+    Column('category', String(255), nullable=False),
+    Column('value', Integer, nullable=False),
+    Column('description', String(255), nullable=False),
+    )
+permitted_label_table = Table(
+    'permitted_label', metadata,
+    Column('key', Integer, primary_key=True),
+    Column('change_key', Integer, ForeignKey("change.key"), index=True),
+    Column('category', String(255), nullable=False),
+    Column('value', Integer, nullable=False),
+    )
+approval_table = Table(
+    'approval', metadata,
+    Column('key', Integer, primary_key=True),
+    Column('change_key', Integer, ForeignKey("change.key"), index=True),
+    Column('name', String(255)),
+    Column('category', String(255), nullable=False),
+    Column('value', Integer, nullable=False),
+    Column('pending', Boolean, index=True, nullable=False),
+    )
+
+
+class Project(object):
+    def __init__(self, name, subscribed=False, description=''):
+        self.name = name
+        self.subscribed = subscribed
+        self.description = description
+
+    def createChange(self, *args, **kw):
+        session = Session.object_session(self)
+        args = [self] + list(args)
+        c = Change(*args, **kw)
+        self.changes.append(c)
+        session.add(c)
+        session.flush()
+        return c
+
+class Change(object):
+    def __init__(self, project, id, number, branch, change_id,
+                 owner, subject, created, updated, status,
+                 topic=False, hidden=False, reviewed=False):
+        self.project_key = project.key
+        self.id = id
+        self.number = number
+        self.branch = branch
+        self.change_id = change_id
+        self.topic = topic
+        self.owner = owner
+        self.subject = subject
+        self.created = created
+        self.updated = updated
+        self.status = status
+        self.hidden = hidden
+        self.reviewed = reviewed
+
+    def getCategories(self):
+        categories = []
+        for label in self.labels:
+            if label.category in categories:
+                continue
+            categories.append(label.category)
+        return categories
+
+    def getMaxForCategory(self, category):
+        if not hasattr(self, '_approval_cache'):
+            self._updateApprovalCache()
+        return self._approval_cache.get(category, 0)
+
+    def _updateApprovalCache(self):
+        cat_min = {}
+        cat_max = {}
+        cat_value = {}
+        for approval in self.approvals:
+            cur_min = cat_min.get(approval.category, 0)
+            cur_max = cat_max.get(approval.category, 0)
+            cur_min = min(approval.value, cur_min)
+            cur_max = max(approval.value, cur_max)
+            cat_min[approval.category] = cur_min
+            cat_max[approval.category] = cur_max
+            cur_value = cat_value.get(approval.category, 0)
+            if abs(cur_min) > abs(cur_value):
+                cur_value = cur_min
+            if abs(cur_max) > abs(cur_value):
+                cur_value = cur_max
+            cat_value[approval.category] = cur_value
+        self._approval_cache = cat_value
+
+    def createRevision(self, *args, **kw):
+        session = Session.object_session(self)
+        args = [self] + list(args)
+        r = Revision(*args, **kw)
+        self.revisions.append(r)
+        session.add(r)
+        session.flush()
+        return r
+
+    def createLabel(self, *args, **kw):
+        session = Session.object_session(self)
+        args = [self] + list(args)
+        l = Label(*args, **kw)
+        self.labels.append(l)
+        session.add(l)
+        session.flush()
+        return l
+
+    def createApproval(self, *args, **kw):
+        session = Session.object_session(self)
+        args = [self] + list(args)
+        l = Approval(*args, **kw)
+        self.approvals.append(l)
+        session.add(l)
+        session.flush()
+        return l
+
+    def createPermittedLabel(self, *args, **kw):
+        session = Session.object_session(self)
+        args = [self] + list(args)
+        l = PermittedLabel(*args, **kw)
+        self.permitted_labels.append(l)
+        session.add(l)
+        session.flush()
+        return l
+
+class Revision(object):
+    def __init__(self, change, number, message, commit, parent):
+        self.change_key = change.key
+        self.number = number
+        self.message = message
+        self.commit = commit
+        self.parent = parent
+
+    def createMessage(self, *args, **kw):
+        session = Session.object_session(self)
+        args = [self] + list(args)
+        m = Message(*args, **kw)
+        self.messages.append(m)
+        session.add(m)
+        session.flush()
+        return m
+
+    def createComment(self, *args, **kw):
+        session = Session.object_session(self)
+        args = [self] + list(args)
+        c = Comment(*args, **kw)
+        self.comments.append(c)
+        session.add(c)
+        session.flush()
+        return c
+
+class Message(object):
+    def __init__(self, revision, id, created, name, message, pending=False):
+        self.revision_key = revision.key
+        self.id = id
+        self.created = created
+        self.name = name
+        self.message = message
+        self.pending = pending
+
+class Comment(object):
+    def __init__(self, revision, id, in_reply_to, created, name, file, parent, line, message, pending=False):
+        self.revision_key = revision.key
+        self.id = id
+        self.in_reply_to = in_reply_to
+        self.created = created
+        self.name = name
+        self.file = file
+        self.parent = parent
+        self.line = line
+        self.message = message
+        self.pending = pending
+
+class Label(object):
+    def __init__(self, change, category, value, description):
+        self.change_key = change.key
+        self.category = category
+        self.value = value
+        self.description = description
+
+class PermittedLabel(object):
+    def __init__(self, change, category, value):
+        self.change_key = change.key
+        self.category = category
+        self.value = value
+
+class Approval(object):
+    def __init__(self, change, name, category, value, pending=False):
+        self.change_key = change.key
+        self.name = name
+        self.category = category
+        self.value = value
+        self.pending = pending
+
+mapper(Project, project_table, properties=dict(
+        changes=relationship(Change, backref='project',
+                             order_by=change_table.c.number),
+        unreviewed_changes=relationship(Change,
+                                        primaryjoin=and_(project_table.c.key==change_table.c.project_key,
+                                                         change_table.c.hidden==False,
+                                                         change_table.c.reviewed==False),
+                                        order_by=change_table.c.number,
+                                        ),
+        reviewed_changes=relationship(Change,
+                                      primaryjoin=and_(project_table.c.key==change_table.c.project_key,
+                                                       change_table.c.hidden==False,
+                                                       change_table.c.reviewed==True),
+                                        order_by=change_table.c.number,
+                                      ),
+        updated = column_property(
+            select([func.max(change_table.c.updated)]).where(
+                change_table.c.project_key==project_table.c.key)
+            ),
+        ))
+mapper(Change, change_table, properties=dict(
+        revisions=relationship(Revision, backref='change',
+                               order_by=revision_table.c.number),
+        messages=relationship(Message,
+                              secondary=revision_table,
+                              order_by=message_table.c.created),
+        labels=relationship(Label, backref='change', order_by=(label_table.c.category,
+                                                               label_table.c.value)),
+        permitted_labels=relationship(PermittedLabel, backref='change',
+                                      order_by=(permitted_label_table.c.category,
+                                                permitted_label_table.c.value)),
+        approvals=relationship(Approval, backref='change', order_by=(approval_table.c.category,
+                                                                     approval_table.c.value)),
+        pending_approvals=relationship(Approval,
+                                       primaryjoin=and_(change_table.c.key==approval_table.c.change_key,
+                                                        approval_table.c.pending==True),
+                                       order_by=(approval_table.c.category,
+                                                 approval_table.c.value))
+        ))
+mapper(Revision, revision_table, properties=dict(
+        messages=relationship(Message, backref='revision'),
+        comments=relationship(Comment, backref='revision',
+                              order_by=(comment_table.c.line,
+                                        comment_table.c.created)),
+        pending_comments=relationship(Comment,
+                                      primaryjoin=and_(revision_table.c.key==comment_table.c.revision_key,
+                                                       comment_table.c.pending==True),
+                                      order_by=(comment_table.c.line,
+                                                comment_table.c.created)),
+        ))
+mapper(Message, message_table)
+mapper(Comment, comment_table)
+mapper(Label, label_table)
+mapper(PermittedLabel, permitted_label_table)
+mapper(Approval, approval_table)
+
+class Database(object):
+    def __init__(self, app):
+        self.app = app
+        self.engine = create_engine(self.app.config.dburi)
+        metadata.create_all(self.engine)
+        self.session_factory = sessionmaker(bind=self.engine)
+        self.session = scoped_session(self.session_factory)
+
+    def getSession(self):
+        return DatabaseSession(self.session)
+
+class DatabaseSession(object):
+    def __init__(self, session):
+        self.session = session
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, etype, value, tb):
+        if etype:
+            self.session().rollback()
+        else:
+            self.session().commit()
+        self.session().close()
+        self.session = None
+
+    def abort(self):
+        self.session().rollback()
+
+    def commit(self):
+        self.session().commit()
+
+    def delete(self, obj):
+        self.session().delete(obj)
+
+    def getProjects(self, subscribed=False):
+        if subscribed:
+            return self.session().query(Project).filter_by(subscribed=subscribed).order_by(Project.name).all()
+        else:
+            return self.session().query(Project).order_by(Project.name).all()
+
+    def getProject(self, key):
+        try:
+            return self.session().query(Project).filter_by(key=key).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getProjectByName(self, name):
+        try:
+            return self.session().query(Project).filter_by(name=name).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getChange(self, key):
+        try:
+            return self.session().query(Change).filter_by(key=key).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getChangeByID(self, id):
+        try:
+            return self.session().query(Change).filter_by(id=id).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getRevision(self, key):
+        try:
+            return self.session().query(Revision).filter_by(key=key).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getRevisionByCommit(self, commit):
+        try:
+            return self.session().query(Revision).filter_by(commit=commit).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getRevisionByNumber(self, change, number):
+        try:
+            return self.session().query(Revision).filter_by(change_key=change.key, number=number).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getComment(self, key):
+        try:
+            return self.session().query(Comment).filter_by(key=key).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getCommentByID(self, id):
+        try:
+            return self.session().query(Comment).filter_by(id=id).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getMessage(self, key):
+        try:
+            return self.session().query(Message).filter_by(key=key).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getMessageByID(self, id):
+        try:
+            return self.session().query(Message).filter_by(id=id).one()
+        except sqlalchemy.orm.exc.NoResultFound:
+            return None
+
+    def getPendingMessages(self):
+        return self.session().query(Message).filter_by(pending=True).all()
+
+    def createProject(self, *args, **kw):
+        o = Project(*args, **kw)
+        self.session().add(o)
+        self.session().flush()
+        return o

gertty/gertty.py

@@ -0,0 +1,186 @@
+# Copyright 2014 OpenStack Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import argparse
+import logging
+import os
+import sys
+import threading
+
+import urwid
+
+import db
+import config
+import gitrepo
+import mywid
+import sync
+import view.project_list
+
+palette=[('reversed', 'default,standout', ''),
+         ('header', 'white,bold', 'dark blue'),
+         ('error', 'light red', 'dark blue'),
+         ('table-header', 'white,bold', ''),
+         # Diff
+         ('removed-line', 'dark red', ''),
+         ('removed-word', 'light red', ''),
+         ('added-line', 'dark green', ''),
+         ('added-word', 'light green', ''),
+         ('nonexistent', 'default', ''),
+         ('reversed-removed-line', 'dark red,standout', ''),
+         ('reversed-removed-word', 'light red,standout', ''),
+         ('reversed-added-line', 'dark green,standout', ''),
+         ('reversed-added-word', 'light green,standout', ''),
+         ('reversed-nonexistent', 'default,standout', ''),
+         ('draft-comment', 'default', 'dark gray'),
+         ('comment', 'white', 'dark gray'),
+         # Change view
+         ('change-data', 'light cyan', ''),
+         ('change-header', 'light blue', ''),
+         ('revision-name', 'light blue', ''),
+         ('revision-commit', 'dark blue', ''),
+         ('revision-drafts', 'dark red', ''),
+         ('reversed-revision-name', 'light blue,standout', ''),
+         ('reversed-revision-commit', 'dark blue,standout', ''),
+         ('reversed-revision-drafts', 'dark red,standout', ''),
+         ('change-message-name', 'light blue', ''),
+         ('change-message-header', 'dark blue', ''),
+         # project list
+         ('unreviewed-project', 'white', ''),
+         ('subscribed-project', 'default', ''),
+         ('unsubscribed-project', 'dark gray', ''),
+         ('reversed-unreviewed-project', 'white,standout', ''),
+         ('reversed-subscribed-project', 'default,standout', ''),
+         ('reversed-unsubscribed-project', 'dark gray,standout', ''),
+         # change list
+         ('unreviewed-change', 'default', ''),
+         ('reviewed-change', 'dark gray', ''),
+         ('reversed-unreviewed-change', 'default,standout', ''),
+         ('reversed-reviewed-change', 'dark gray,standout', ''),
+         ]
+
+class StatusHeader(urwid.WidgetWrap):
+    def __init__(self, app):
+        super(StatusHeader, self).__init__(urwid.Columns([]))
+        self.app = app
+        self.title = urwid.Text(u'Start')
+        self.error = urwid.Text('')
+        self.offline = urwid.Text('')
+        self.sync = urwid.Text(u'Sync: 0')
+        self._w.contents.append((self.title, ('pack', None, False)))
+        self._w.contents.append((urwid.Text(u''), ('weight', 1, False)))
+        self._w.contents.append((self.error, ('pack', None, False)))
+        self._w.contents.append((self.offline, ('pack', None, False)))
+        self._w.contents.append((self.sync, ('pack', None, False)))
+
+    def update(self, title=None, error=False, offline=None):
+        if title:
+            self.title.set_text(title)
+        if error:
+            self.error.set_text(('error', u'Error'))
+        if offline is not None:
+            if offline:
+                self.error.set_text(u'Offline')
+            else:
+                self.error.set_text(u'')
+        self.sync.set_text(u' Sync: %i' % self.app.sync.queue.qsize())
+
+class App(object):
+    def __init__(self, server=None, debug=False):
+        self.server = server
+        self.config = config.Config(server)
+        if debug:
+            level = logging.DEBUG
+        else:
+            level = logging.WARNING
+        logging.basicConfig(filename=self.config.log_file, filemode='w',
+                            format='%(asctime)s %(message)s',
+                            level=level)
+        self.log = logging.getLogger('gertty.App')
+        self.log.debug("Starting")
+        self.db = db.Database(self)
+        self.sync = sync.Sync(self)
+
+        self.screens = []
+        self.status = StatusHeader(self)
+        self.header = urwid.AttrMap(self.status, 'header')
+        screen = view.project_list.ProjectListView(self)
+        self.status.update(title=screen.title)
+        self.loop = urwid.MainLoop(screen, palette=palette,
+                                   unhandled_input=self.unhandledInput)
+        sync_pipe = self.loop.watch_pipe(self.refresh)
+        #self.loop.screen.set_terminal_properties(colors=88)
+        self.sync_thread = threading.Thread(target=self.sync.run, args=(sync_pipe,))
+        self.sync_thread.start()
+        self.loop.run()
+
+    def changeScreen(self, widget):
+        self.status.update(title=widget.title)
+        self.screens.append(self.loop.widget)
+        self.loop.widget = widget
+
+    def backScreen(self):
+        if not self.screens:
+            return
+        widget = self.screens.pop()
+        self.status.update(title=widget.title)
+        self.loop.widget = widget
+        self.refresh()
+
+    def refresh(self, data=None):
+        widget = self.loop.widget
+        while isinstance(widget, urwid.Overlay):
+            widget = widget.contents[0][0]
+        widget.refresh()
+
+    def popup(self, widget,
+              relative_width=50, relative_height=25,
+              min_width=20, min_height=8):
+        overlay = urwid.Overlay(widget, self.loop.widget,
+                                'center', ('relative', relative_width),
+                                'middle', ('relative', relative_height),
+                                min_width=min_width, min_height=min_height)
+        self.screens.append(self.loop.widget)
+        self.loop.widget = overlay
+
+    def help(self):
+        if not hasattr(self.loop.widget, 'help'):
+            return
+        dialog = mywid.MessageDialog('Help', self.loop.widget.help)
+        lines = self.loop.widget.help.split('\n')
+        urwid.connect_signal(dialog, 'close',
+            lambda button: self.backScreen())
+        self.popup(dialog, min_width=76, min_height=len(lines)+2)
+
+    def unhandledInput(self, key):
+        if key == 'esc':
+            self.backScreen()
+        elif key == 'f1':
+            self.help()
+
+    def getRepo(self, project_name):
+        local_path = os.path.join(self.config.git_root, project_name)
+        local_root = os.path.abspath(self.config.git_root)
+        assert os.path.commonprefix((local_root, local_path)) == local_root
+        return gitrepo.Repo(self.config.url+'p/'+project_name,
+                            local_path)
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(
+        description='Console client for Gerrit Code Review.')
+    parser.add_argument('-d', dest='debug', action='store_true',
+                        help='enable debug logging')
+    parser.add_argument('server', nargs='?',
+                        help='the server to use (as specified in config file)')
+    args = parser.parse_args()
+    g = App(args.server, args.debug)

gertty/gitrepo.py

@@ -0,0 +1,196 @@
+# Copyright 2014 OpenStack Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import difflib
+import os
+import re
+
+import git
+
+class DiffFile(object):
+    def __init__(self):
+        self.newname = None
+        self.oldname = None
+        self.oldlines = []
+        self.newlines = []
+
+class GitCheckoutError(Exception):
+    def __init__(self, msg):
+        super(GitCheckoutError, self).__init__(msg)
+        self.msg = msg
+
+class Repo(object):
+    def __init__(self, url, path):
+        self.url = url
+        self.path = path
+        self.differ = difflib.Differ()
+        if not os.path.exists(path):
+            git.Repo.clone_from(self.url, self.path)
+
+    def fetch(self, url, refspec):
+        repo = git.Repo(self.path)
+        try:
+            repo.git.fetch(url, refspec)
+        except AssertionError:
+            repo.git.fetch(url, refspec)
+
+    def checkout(self, ref):
+        repo = git.Repo(self.path)
+        try:
+            repo.git.checkout(ref)
+        except git.exc.GitCommandError as e:
+            raise GitCheckoutError(e.stderr.replace('\t', '    '))
+
+    def diffstat(self, old, new):
+        repo = git.Repo(self.path)
+        diff = repo.git.diff('-M', '--numstat', old, new)
+        ret = []
+        for x in diff.split('\n'):
+            # Added, removed, filename
+            ret.append(x.split('\t'))
+        return ret
+
+    def intraline_diff(self, old, new):
+        prevline = None
+        prevstyle = None
+        output_old = []
+        output_new = []
+        #socket.send('startold' + repr(old)+'\n')
+        #socket.send('startnew' + repr(new)+'\n')
+        for line in self.differ.compare(old, new):
+            #socket.sendall('diff output: ' + line+'\n')
+            key = line[0]
+            rest = line[2:]
+            if key == '?':
+                result = []
+                accumulator = ''
+                emphasis = False
+                rest = rest[:-1]  # It has a newline.
+                for i, c in enumerate(prevline):
+                    if i >= len(rest):
+                        indicator = ' '
+                    else:
+                        indicator = rest[i]
+                    #socket.sendall('%s %s %s %s %s\n' % (i, c, indicator, emphasis, accumulator))
+                    if indicator != ' ' and not emphasis:
+                        # changing from not emph to emph
+                        if accumulator:
+                            result.append((prevstyle+'-line', accumulator))
+                        accumulator = ''
+                        emphasis = True
+                    elif indicator == ' ' and emphasis:
+                        # changing from emph to not emph
+                        if accumulator:
+                            result.append((prevstyle+'-word', accumulator))
+                        accumulator = ''
+                        emphasis = False
+                    accumulator += c
+                if accumulator:
+                    if emphasis:
+                        result.append((prevstyle+'-word', accumulator))
+                    else:
+                        result.append((prevstyle+'-line', accumulator))
+                if prevstyle == 'added':
+                    output_new.append(result)
+                elif prevstyle == 'removed':
+                    output_old.append(result)
+                prevline = None
+                continue
+            if prevline is not None:
+                if prevstyle == 'added':
+                    output_new.append((prevstyle+'-line', prevline))
+                elif prevstyle == 'removed':
+                    output_old.append((prevstyle+'-line', prevline))
+            if key == '+':
+                prevstyle = 'added'
+            elif key == '-':
+                prevstyle = 'removed'
+            prevline = rest
+        #socket.sendall('prev'+repr(prevline)+'\n')
+        if prevline is not None:
+            if prevstyle == 'added':
+                output_new.append((prevstyle+'-line', prevline))
+            elif prevstyle == 'removed':
+                output_old.append((prevstyle+'-line', prevline))
+        #socket.sendall(repr(output_old)+'\n')
+        #socket.sendall(repr(output_new)+'\n')
+        #socket.sendall('\n')
+        return output_old, output_new
+
+    header_re = re.compile('@@ -(\d+)(,\d+)? \+(\d+)(,\d+)? @@')
+    def diff(self, old, new, context=20):
+        repo = git.Repo(self.path)
+        #'-y', '-x', 'diff -C10', old, new, path).split('\n'):
+        oldc = repo.commit(old)
+        newc = repo.commit(new)
+        files = []
+        for context in oldc.diff(newc, create_patch=True, U=context):
+            f = DiffFile()
+            files.append(f)
+            old_lineno = 0
+            new_lineno = 0
+            offset = 0
+            oldchunk = []
+            newchunk = []
+            for line in context.diff.split('\n'):
+                if line.startswith('---'):
+                    f.oldname = line[6:]
+                    continue
+                if line.startswith('+++'):
+                    f.newname = line[6:]
+                    continue
+                if line.startswith('@@'):
+                    #socket.sendall(line)
+                    m = self.header_re.match(line)
+                    #socket.sendall(str(m.groups()))
+                    old_lineno = int(m.group(1))
+                    new_lineno = int(m.group(3))
+                    continue
+                if not line:
+                    line = ' '
+                key = line[0]
+                rest = line[1:]
+                if key == '-':
+                    oldchunk.append(rest)
+                    continue
+                if key == '+':
+                    newchunk.append(rest)
+                    continue
+                # end of chunk
+                if oldchunk or newchunk:
+                    oldchunk, newchunk = self.intraline_diff(oldchunk, newchunk)
+                for l in oldchunk:
+                    f.oldlines.append((old_lineno, '-', l))
+                    old_lineno += 1
+                    offset -= 1
+                for l in newchunk:
+                    f.newlines.append((new_lineno, '+', l))
+                    new_lineno += 1
+                    offset += 1
+                oldchunk = []
+                newchunk = []
+                while offset > 0:
+                    f.oldlines.append((None, '', ''))
+                    offset -= 1
+                while offset < 0:
+                    f.newlines.append((None, '', ''))
+                    offset += 1
+                if key == ' ':
+                    f.oldlines.append((old_lineno, ' ', rest))
+                    f.newlines.append((new_lineno, ' ', rest))
+                    old_lineno += 1
+                    new_lineno += 1
+                    continue
+                raise Exception("Unhandled line: %s" % line)
+        return files

gertty/mywid.py

@@ -0,0 +1,61 @@
+# Copyright 2014 OpenStack Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import urwid
+
+class TextButton(urwid.Button):
+    def selectable(self):
+        return True
+
+    def __init__(self, text, on_press=None, user_data=None):
+        super(TextButton, self).__init__('', on_press=on_press, user_data=user_data)
+        text = urwid.Text(text)
+        self._w = urwid.AttrMap(text, None, focus_map='reversed')
+
+class FixedButton(urwid.Button):
+    def sizing(self):
+        return frozenset([urwid.FIXED])
+
+    def pack(self, size, focus=False):
+        return (len(self.get_label())+4, 1)
+
+class TableColumn(urwid.Pile):
+    def pack(self, size, focus=False):
+        mx = max([len(i[0].text) for i in self.contents])
+        return (mx+2, len(self.contents))
+
+class Table(urwid.WidgetWrap):
+    def __init__(self, headers=[]):
+        super(Table, self).__init__(
+            urwid.Columns([('pack', TableColumn([('pack', w)])) for w in headers]))
+
+    def addRow(self, cells=[]):
+        for i, widget in enumerate(cells):
+            self._w.contents[i][0].contents.append((widget, ('pack', None)))
+
+class MessageDialog(urwid.WidgetWrap):
+    signals = ['close']
+    def __init__(self, title, message):
+        ok_button = FixedButton(u'OK')
+        urwid.connect_signal(ok_button, 'click',
+            lambda button:self._emit('close'))
+        buttons = urwid.Columns([('pack', ok_button)],
+                                dividechars=2)
+        rows = []
+        rows.append(urwid.Text(message))
+        rows.append(urwid.Divider())
+        rows.append(buttons)
+        pile = urwid.Pile(rows)
+        fill = urwid.Filler(pile, valign='top')
+        super(MessageDialog, self).__init__(urwid.LineBox(fill, title))

gertty/sync.py

@@ -0,0 +1,453 @@
+# Copyright 2014 OpenStack Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import collections
+import logging
+import math
+import os
+import threading
+import urlparse
+import json
+import time
+import Queue
+import datetime
+
+import dateutil.parser
+import requests
+
+HIGH_PRIORITY=0
+NORMAL_PRIORITY=1
+LOW_PRIORITY=2
+
+class MultiQueue(object):
+    def __init__(self, priorities):
+        self.queues = collections.OrderedDict()
+        for key in priorities:
+            self.queues[key] = collections.deque()
+        self.condition = threading.Condition()
+
+    def qsize(self):
+        count = 0
+        for queue in self.queues.values():
+            count += len(queue)
+        return count
+
+    def put(self, item, priority):
+        self.condition.acquire()
+        try:
+            self.queues[priority].append(item)
+            self.condition.notify()
+        finally:
+            self.condition.release()
+
+    def get(self):
+        self.condition.acquire()
+        try:
+            while True:
+                for queue in self.queues.values():
+                    try:
+                        ret = queue.popleft()
+                        return ret
+                    except IndexError:
+                        pass
+                self.condition.wait()
+        finally:
+            self.condition.release()
+
+class Task(object):
+    def __init__(self, priority=NORMAL_PRIORITY):
+        self.log = logging.getLogger('gertty.sync')
+        self.priority = priority
+        self.succeeded = None
+        self.event = threading.Event()
+
+    def complete(self, success):
+        self.succeeded = success
+        self.event.set()
+
+    def wait(self):
+        self.event.wait()
+
+class SyncProjectListTask(Task):
+    def __repr__(self):
+        return '<SyncProjectListTask>'
+
+    def run(self, sync):
+        app = sync.app
+        with app.db.getSession() as session:
+            remote = sync.get('projects/?d')
+            remote_keys = set(remote.keys())
+
+            local = {}
+            for p in session.getProjects():
+                local[p.name] = p
+            local_keys = set(local.keys())
+
+            for name in local_keys-remote_keys:
+                session.delete(local[name])
+
+            for name in remote_keys-local_keys:
+                p = remote[name]
+                session.createProject(name, description=p.get('description', ''))
+
+class SyncSubscribedProjectsTask(Task):
+    def __repr__(self):
+        return '<SyncSubscribedProjectsTask>'
+
+    def run(self, sync):
+        app = sync.app
+        with app.db.getSession() as session:
+            for p in session.getProjects(subscribed=True):
+                sync.submitTask(SyncProjectTask(p.key, self.priority))
+
+class SyncProjectTask(Task):
+    _closed_statuses = ['MERGED', 'ABANDONED']
+
+    def __init__(self, project_key, priority=NORMAL_PRIORITY):
+        super(SyncProjectTask, self).__init__(priority)
+        self.project_key = project_key
+
+    def __repr__(self):
+        return '<SyncProjectTask %s>' % (self.project_key,)
+
+    def run(self, sync):
+        app = sync.app
+        with app.db.getSession() as session:
+            project = session.getProject(self.project_key)
+            query = 'project:%s' % project.name
+            if project.updated:
+                query += ' -age:%ss' % (int(math.ceil((datetime.datetime.utcnow()-project.updated).total_seconds())) + 0,)
+            changes = sync.get('changes/?q=%s' % query)
+            self.log.debug('Query: %s ' % (query,))
+            for c in reversed(changes):
+                # The list we get is newest to oldest; if we are
+                # interrupted, we will have already synced the newest
+                # change and a subsequent sync will not catch up the
+                # old ones.  So reverse the list before we process it
+                # so that the updated time is accurate.
+                # For now, just sync open changes or changes already
+                # in the db optionally we could sync all changes ever
+                change = session.getChangeByID(c['id'])
+                if change or (c['status'] not in self._closed_statuses):
+                    sync.submitTask(SyncChangeTask(c['id'], self.priority))
+                    self.log.debug("Change %s update %s" % (c['id'], c['updated']))
+
+class SyncChangeTask(Task):
+    def __init__(self, change_id, priority=NORMAL_PRIORITY):
+        super(SyncChangeTask, self).__init__(priority)
+        self.change_id = change_id
+
+    def __repr__(self):
+        return '<SyncChangeTask %s>' % (self.change_id,)
+
+    def run(self, sync):
+        app = sync.app
+        remote_change = sync.get('changes/%s?o=DETAILED_LABELS&o=ALL_REVISIONS&o=ALL_COMMITS&o=MESSAGES&o=DETAILED_ACCOUNTS' % self.change_id)
+        fetches = []
+        with app.db.getSession() as session:
+            change = session.getChangeByID(self.change_id)
+            if not change:
+                project = session.getProjectByName(remote_change['project'])
+                created = dateutil.parser.parse(remote_change['created'])
+                updated = dateutil.parser.parse(remote_change['updated'])
+                change = project.createChange(remote_change['id'], remote_change['_number'],
+                                              remote_change['branch'], remote_change['change_id'],
+                                              remote_change['owner']['name'],
+                                              remote_change['subject'], created,
+                                              updated, remote_change['status'],
+                                              topic=remote_change.get('topic'))
+            change.status = remote_change['status']
+            change.subject = remote_change['subject']
+            change.updated = dateutil.parser.parse(remote_change['updated'])
+            change.topic = remote_change.get('topic')
+            repo = app.getRepo(change.project.name)
+            new_revision = False
+            for remote_commit, remote_revision in remote_change.get('revisions', {}).items():
+                revision = session.getRevisionByCommit(remote_commit)
+                if not revision:
+                    # TODO: handle multiple parents
+                    url = sync.app.config.url + change.project.name
+                    if 'anonymous http' in remote_revision['fetch']:
+                        ref = remote_revision['fetch']['anonymous http']['ref']
+                    else:
+                        ref = remote_revision['fetch']['http']['ref']
+                        url = list(urlparse.urlsplit(url))
+                        url[1] = '%s:%s@%s' % (sync.app.config.username,
+                                               sync.app.config.password, url[1])
+                        url = urlparse.urlunsplit(url)
+                    fetches.append((url, ref))
+                    revision = change.createRevision(remote_revision['_number'],
+                                                     remote_revision['commit']['message'], remote_commit,
+                                                     remote_revision['commit']['parents'][0]['commit'])
+                    new_revision = True
+                remote_comments = sync.get('changes/%s/revisions/%s/comments' % (self.change_id, revision.commit))
+                for remote_file, remote_comments in remote_comments.items():
+                    for remote_comment in remote_comments:
+                        comment = session.getCommentByID(remote_comment['id'])
+                        if not comment:
+                            # Normalize updated -> created
+                            created = dateutil.parser.parse(remote_comment['updated'])
+                            parent = False
+                            if remote_comment.get('side', '') == 'PARENT':
+                                parent = True
+                            comment = revision.createComment(remote_comment['id'],
+                                                             remote_comment.get('in_reply_to'),
+                                                             created, remote_comment['author']['name'],
+                                                             remote_file, parent, remote_comment.get('line'),
+                                                             remote_comment['message'])
+            new_message = False
+            for remote_message in remote_change.get('messages', []):
+                message = session.getMessageByID(remote_message['id'])
+                if not message:
+                    revision = session.getRevisionByNumber(change, remote_message['_revision_number'])
+                    # Normalize date -> created
+                    created = dateutil.parser.parse(remote_message['date'])
+                    if 'author' in remote_message:
+                        author_name = remote_message['author']['name']
+                        if remote_message['author']['username'] != app.config.username:
+                            new_message = True
+                    else:
+                        author_name = 'Gerrit Code Review'
+                    message = revision.createMessage(remote_message['id'], created,
+                                                     author_name,
+                                                     remote_message['message'])
+            remote_approval_entries = {}
+            remote_label_entries = {}
+            user_voted = False
+            for remote_label_name, remote_label_dict in remote_change.get('labels', {}).items():
+                for remote_approval in remote_label_dict.get('all', []):
+                    if remote_approval.get('value') is None:
+                        continue
+                    remote_approval['category'] = remote_label_name
+                    key = '%s~%s' % (remote_approval['category'], remote_approval['name'])
+                    remote_approval_entries[key] = remote_approval
+                    if remote_approval.get('username', None) == app.config.username and int(remote_approval['value']) != 0:
+                        user_voted = True
+                for key, value in remote_label_dict.get('values', {}).items():
+                    # +1: "LGTM"
+                    label = dict(value=key,
+                                 description=value,
+                                 category=remote_label_name)
+                    key = '%s~%s~%s' % (label['category'], label['value'], label['description'])
+                    remote_label_entries[key] = label
+            remote_approval_keys = set(remote_approval_entries.keys())
+            remote_label_keys = set(remote_label_entries.keys())
+            local_approvals = {}
+            local_labels = {}
+            for approval in change.approvals:
+                key = '%s~%s' % (approval.category, approval.name)
+                local_approvals[key] = approval
+            local_approval_keys = set(local_approvals.keys())
+            for label in change.labels:
+                key = '%s~%s~%s' % (label.category, label.value, label.description)
+                local_labels[key] = label
+            local_label_keys = set(local_labels.keys())
+
+            for key in local_approval_keys-remote_approval_keys:
+                session.delete(local_approvals[key])
+
+            for key in local_label_keys-remote_label_keys:
+                session.delete(local_labels[key])
+
+            for key in remote_approval_keys-local_approval_keys:
+                remote_approval = remote_approval_entries[key]
+                change.createApproval(remote_approval['name'],
+                                      remote_approval['category'],
+                                      remote_approval['value'])
+
+            for key in remote_label_keys-local_label_keys:
+                remote_label = remote_label_entries[key]
+                change.createLabel(remote_label['category'],
+                                   remote_label['value'],
+                                   remote_label['description'])
+
+            for key in remote_approval_keys.intersection(local_approval_keys):
+                local_approval = local_approvals[key]
+                remote_approval = remote_approval_entries[key]
+                local_approval.value = remote_approval['value']
+
+            remote_permitted_entries = {}
+            for remote_label_name, remote_label_values in remote_change.get('permitted_labels', {}).items():
+                for remote_label_value in remote_label_values:
+                    remote_label = dict(category=remote_label_name,
+                                        value=remote_label_value)
+                    key = '%s~%s' % (remote_label['category'], remote_label['value'])
+                    remote_permitted_entries[key] = remote_label
+            remote_permitted_keys = set(remote_permitted_entries.keys())
+            local_permitted = {}
+            for permitted in change.permitted_labels:
+                key = '%s~%s' % (permitted.category, permitted.value)
+                local_permitted[key] = permitted
+            local_permitted_keys = set(local_permitted.keys())
+
+            for key in local_permitted_keys-remote_permitted_keys:
+                session.delete(local_permitted[key])
+
+            for key in remote_permitted_keys-local_permitted_keys:
+                remote_permitted = remote_permitted_entries[key]
+                change.createPermittedLabel(remote_permitted['category'],
+                                            remote_permitted['value'])
+
+            if not user_voted:
+                # Only consider changing the reviewed state if we don't have a vote
+                if new_revision or new_message:
+                    change.reviewed = False
+        for (url, ref) in fetches:
+            self.log.debug("git fetch %s %s" % (url, ref))
+            repo.fetch(url, ref)
+
+
+class UploadReviewsTask(Task):
+    def __repr__(self):
+        return '<UploadReviewsTask>'
+
+    def run(self, sync):
+        app = sync.app
+        with app.db.getSession() as session:
+            for m in session.getPendingMessages():
+                sync.submitTask(UploadReviewTask(m.key, self.priority))
+
+class UploadReviewTask(Task):
+    def __init__(self, message_key, priority=NORMAL_PRIORITY):
+        super(UploadReviewTask, self).__init__(priority)
+        self.message_key = message_key
+
+    def __repr__(self):
+        return '<UploadReviewTask %s>' % (self.message_key,)
+
+    def run(self, sync):
+        app = sync.app
+        with app.db.getSession() as session:
+            message = session.getMessage(self.message_key)
+            revision = message.revision
+            change = message.revision.change
+            current_revision = change.revisions[-1]
+            data = dict(message=message.message,
+                        strict_labels=False)
+            if revision == current_revision:
+                data['labels'] = {}
+                for approval in change.pending_approvals:
+                    data['labels'][approval.category] = approval.value
+                    session.delete(approval)
+            if revision.pending_comments:
+                data['comments'] = {}
+                last_file = None
+                comment_list = []
+                for comment in revision.pending_comments:
+                    if comment.file != last_file:
+                        last_file = comment.file
+                        comment_list = []
+                        data['comments'][comment.file] = comment_list
+                    d = dict(line=comment.line,
+                             message=comment.message)
+                    if comment.parent:
+                        d['side'] = 'PARENT'
+                    comment_list.append(d)
+                    session.delete(comment)
+            session.delete(message)
+            sync.post('changes/%s/revisions/%s/review' % (change.id, revision.commit),
+                      data)
+            sync.submitTask(SyncChangeTask(change.id, self.priority))
+
+class Sync(object):
+    def __init__(self, app):
+        self.offline = False
+        self.app = app
+        self.log = logging.getLogger('gertty.sync')
+        self.queue = MultiQueue([HIGH_PRIORITY, NORMAL_PRIORITY, LOW_PRIORITY])
+        self.submitTask(SyncProjectListTask(HIGH_PRIORITY))
+        self.submitTask(SyncSubscribedProjectsTask(HIGH_PRIORITY))
+        self.submitTask(UploadReviewsTask(HIGH_PRIORITY))
+        self.periodic_thread = threading.Thread(target=self.periodicSync)
+        self.periodic_thread.start()
+
+    def periodicSync(self):
+        while True:
+            try:
+                time.sleep(60)
+                self.syncSubscribedProjects()
+            except Exception:
+                self.log.exception('Exception in periodicSync')
+
+    def submitTask(self, task):
+        if not self.offline:
+            self.queue.put(task, task.priority)
+
+    def run(self, pipe):
+        task = None
+        while True:
+            task = self._run(pipe, task)
+
+    def _run(self, pipe, task=None):
+        if not task:
+            task = self.queue.get()
+        self.log.debug('Run: %s' % (task,))
+        try:
+            task.run(self)
+            task.complete(True)
+        except requests.ConnectionError, e:
+            self.log.warning("Offline due to: %s" % (e,))
+            if not self.offline:
+                self.submitTask(SyncSubscribedProjectsTask(HIGH_PRIORITY))
+                self.submitTask(UploadReviewsTask(HIGH_PRIORITY))
+            self.offline = True
+            self.app.status.update(offline=True)
+            os.write(pipe, 'refresh\n')
+            time.sleep(30)
+            return task
+        except Exception:
+            task.complete(False)
+            self.log.exception('Exception running task %s' % (task,))
+            self.app.status.update(error=True)
+        self.offline = False
+        self.app.status.update(offline=False)
+        os.write(pipe, 'refresh\n')
+        return None
+
+    def url(self, path):
+        return self.app.config.url + 'a/' + path
+
+    def get(self, path):
+        url = self.url(path)
+        self.log.debug('GET: %s' % (url,))
+        r = requests.get(url,
+                         verify=self.app.config.verify_ssl,
+                         auth=requests.auth.HTTPDigestAuth(self.app.config.username,
+                                                           self.app.config.password),
+                         headers = {'Accept': 'application/json',
+                                    'Accept-Encoding': 'gzip'})
+        self.log.debug('Received: %s' % (r.text,))
+        ret = json.loads(r.text[4:])
+        return ret
+
+    def post(self, path, data):
+        url = self.url(path)
+        self.log.debug('POST: %s' % (url,))
+        self.log.debug('data: %s' % (data,))
+        r = requests.post(url, data=json.dumps(data).encode('utf8'),
+                          verify=self.app.config.verify_ssl,
+                          auth=requests.auth.HTTPDigestAuth(self.app.config.username,
+                                                            self.app.config.password),
+                          headers = {'Content-Type': 'application/json;charset=UTF-8'})
+        self.log.debug('Received: %s' % (r.text,))
+
+    def syncSubscribedProjects(self):
+        keys = []
+        with self.app.db.getSession() as session:
+            for p in session.getProjects(subscribed=True):
+                keys.append(p.key)
+        for key in keys:
+            t = SyncProjectTask(key, LOW_PRIORITY)
+            self.submitTask(t)
+            t.wait()

gertty/view/change.py

@@ -0,0 +1,372 @@
+# Copyright 2014 OpenStack Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import datetime
+
+import urwid
+
+import gitrepo
+import mywid
+import sync
+import view.diff
+
+class ReviewDialog(urwid.WidgetWrap):
+    signals = ['save', 'cancel']
+    def __init__(self, revision_row):
+        self.revision_row = revision_row
+        self.change_view = revision_row.change_view
+        self.app = self.change_view.app
+        save_button = mywid.FixedButton(u'Save')
+        cancel_button = mywid.FixedButton(u'Cancel')
+        urwid.connect_signal(save_button, 'click',
+            lambda button:self._emit('save'))
+        urwid.connect_signal(cancel_button, 'click',
+            lambda button:self._emit('cancel'))
+        buttons = urwid.Columns([('pack', save_button), ('pack', cancel_button)],
+                                dividechars=2)
+        rows = []
+        categories = []
+        values = {}
+        self.button_groups = {}
+        message = ''
+        with self.app.db.getSession() as session:
+            revision = session.getRevision(self.revision_row.revision_key)
+            change = revision.change
+            if revision == change.revisions[-1]:
+                for label in change.permitted_labels:
+                    if label.category not in categories:
+                        categories.append(label.category)
+                        values[label.category] = []
+                    values[label.category].append(label.value)
+                pending_approvals = {}
+                for approval in change.pending_approvals:
+                    pending_approvals[approval.category] = approval
+                for category in categories:
+                    rows.append(urwid.Text(category))
+                    group = []
+                    self.button_groups[category] = group
+                    current = pending_approvals.get(category)
+                    if current is None:
+                        current = 0
+                    else:
+                        current = current.value
+                    for value in values[category]:
+                        if value > 0:
+                            strvalue = '+%s' % value
+                        elif value == 0:
+                            strvalue = ' 0'
+                        else:
+                            strvalue = str(value)
+                        b = urwid.RadioButton(group, strvalue, state=(value == current))
+                        rows.append(b)
+                    rows.append(urwid.Divider())
+            for m in revision.messages:
+                if m.pending:
+                    message = m.message
+                    break
+        self.message = urwid.Edit("Message: \n", edit_text=message, multiline=True)
+        rows.append(self.message)
+        rows.append(urwid.Divider())
+        rows.append(buttons)
+        pile = urwid.Pile(rows)
+        fill = urwid.Filler(pile, valign='top')
+        super(ReviewDialog, self).__init__(urwid.LineBox(fill, 'Review'))
+
+    def save(self):
+        message_key = None
+        with self.app.db.getSession() as session:
+            revision = session.getRevision(self.revision_row.revision_key)
+            change = revision.change
+            pending_approvals = {}
+            for approval in change.pending_approvals:
+                pending_approvals[approval.category] = approval
+            for category, group in self.button_groups.items():
+                approval = pending_approvals.get(category)
+                if not approval:
+                    approval = change.createApproval(u'(draft)', category, 0, pending=True)
+                    pending_approvals[category] = approval
+                for button in group:
+                    if button.state:
+                        approval.value = int(button.get_label())
+            message = None
+            for m in revision.messages:
+                if m.pending:
+                    message = m
+                    break
+            if not message:
+                message = revision.createMessage(None,
+                                                 datetime.datetime.utcnow(),
+                                                 u'(draft)', '', pending=True)
+            message.message = self.message.edit_text.strip()
+            message_key = message.key
+            change.reviewed = True
+        return message_key
+
+    def keypress(self, size, key):
+        r = super(ReviewDialog, self).keypress(size, key)
+        if r=='esc':
+            self._emit('cancel')
+            return None
+        return r
+
+class ReviewButton(mywid.FixedButton):
+    def __init__(self, revision_row):
+        super(ReviewButton, self).__init__(u'Review')
+        self.revision_row = revision_row
+        self.change_view = revision_row.change_view
+        urwid.connect_signal(self, 'click',
+            lambda button: self.openReview())
+
+    def openReview(self):
+        self.dialog = ReviewDialog(self.revision_row)
+        urwid.connect_signal(self.dialog, 'save',
+            lambda button: self.closeReview(True))
+        urwid.connect_signal(self.dialog, 'cancel',
+            lambda button: self.closeReview(False))
+        self.change_view.app.popup(self.dialog,
+                                   relative_width=50, relative_height=75,
+                                   min_width=60, min_height=20)
+
+    def closeReview(self, save):
+        if save:
+            message_key = self.dialog.save()
+            self.change_view.app.sync.submitTask(
+                sync.UploadReviewTask(message_key, sync.HIGH_PRIORITY))
+            self.change_view.refresh()
+        self.change_view.app.backScreen()
+
+class RevisionRow(urwid.WidgetWrap):
+    revision_focus_map = {
+                          'revision-name': 'reversed-revision-name',
+                          'revision-commit': 'reversed-revision-commit',
+                          'revision-drafts': 'reversed-revision-drafts',
+                          }
+
+    def __init__(self, app, change_view, repo, revision, expanded=False):
+        super(RevisionRow, self).__init__(urwid.Pile([]))
+        self.app = app
+        self.change_view = change_view
+        self.revision_key = revision.key
+        self.project_name = revision.change.project.name
+        self.commit_sha = revision.commit
+        line = [('revision-name', 'Patch Set %s ' % revision.number),
+                ('revision-commit', revision.commit)]
+        if len(revision.pending_comments):
+            line.append(('revision-drafts', ' (%s drafts)' % len(revision.pending_comments)))
+        self.title = mywid.TextButton(line, on_press = self.expandContract)
+        stats = repo.diffstat(revision.parent, revision.commit)
+        rows = []
+        total_added = 0
+        total_removed = 0
+        for added, removed, filename in stats:
+            total_added += int(added)
+            total_removed += int(removed)
+            rows.append(urwid.Columns([urwid.Text(filename),
+                                       (10, urwid.Text('+%s, -%s' % (added, removed))),
+                                       ]))
+        rows.append(urwid.Columns([urwid.Text(''),
+                                   (10, urwid.Text('+%s, -%s' % (total_added, total_removed))),
+                                   ]))
+        table = urwid.Pile(rows)
+        buttons = urwid.Columns([('pack', ReviewButton(self)),
+                                 ('pack', mywid.FixedButton("Diff", on_press=self.diff)),
+                                 ('pack', mywid.FixedButton("Checkout", on_press=self.checkout)),
+                                 urwid.Text(''),
+                                 ], dividechars=2)
+        self.more = urwid.Pile([table, buttons])
+        self.pile = urwid.Pile([self.title])
+        self._w = urwid.AttrMap(self.pile, None, focus_map=self.revision_focus_map)
+        self.expanded = False
+        if expanded:
+            self.expandContract(None)
+
+    def expandContract(self, button):
+        if self.expanded:
+            self.pile.contents.pop()
+            self.expanded = False
+        else:
+            self.pile.contents.append((self.more, ('pack', None)))
+            self.expanded = True
+
+    def diff(self, button):
+        self.change_view.diff(self.revision_key)
+
+    def checkout(self, button):
+        repo = self.app.getRepo(self.project_name)
+        try:
+            repo.checkout(self.commit_sha)
+            dialog = mywid.MessageDialog('Checkout', 'Change checked out in %s' % repo.path)
+            min_height=8
+        except gitrepo.GitCheckoutError as e:
+            dialog = mywid.MessageDialog('Error', e.msg)
+            min_height=12
+        urwid.connect_signal(dialog, 'close',
+            lambda button: self.app.backScreen())
+        self.app.popup(dialog, min_height=min_height)
+
+class ChangeMessageBox(urwid.Text):
+    def __init__(self, message):
+        super(ChangeMessageBox, self).__init__(u'')
+        lines = message.message.split('\n')
+        text = [('change-message-name', message.name),
+                ('change-message-header', ': '+lines.pop(0))]
+        if lines and lines[-1]:
+            lines.append('')
+        text += '\n'.join(lines)
+        self.set_text(text)
+
+class ChangeView(urwid.WidgetWrap):
+    help = """
+<r>   Toggle the reviewed flag for the current change.
+<ESC> Go back to the previous screen.
+"""
+
+    def __init__(self, app, change_key):
+        super(ChangeView, self).__init__(urwid.Pile([]))
+        self.app = app
+        self.change_key = change_key
+        self.revision_rows = {}
+        self.message_rows = {}
+        self.change_id_label = urwid.Text(u'', wrap='clip')
+        self.owner_label = urwid.Text(u'', wrap='clip')
+        self.project_label = urwid.Text(u'', wrap='clip')
+        self.branch_label = urwid.Text(u'', wrap='clip')
+        self.topic_label = urwid.Text(u'', wrap='clip')
+        self.created_label = urwid.Text(u'', wrap='clip')
+        self.updated_label = urwid.Text(u'', wrap='clip')
+        self.status_label = urwid.Text(u'', wrap='clip')
+        change_info = []
+        for l, v in [("Change-Id", self.change_id_label),
+                     ("Owner", self.owner_label),
+                     ("Project", self.project_label),
+                     ("Branch", self.branch_label),
+                     ("Topic", self.topic_label),
+                     ("Created", self.created_label),
+                     ("Updated", self.updated_label),
+                     ("Status", self.status_label),
+                     ]:
+            row = urwid.Columns([(12, urwid.Text(('change-header', l), wrap='clip')), v])
+            change_info.append(row)
+        change_info = urwid.Pile(change_info)
+        self.commit_message = urwid.Text(u'')
+        top = urwid.Columns([change_info, ('weight', 1, self.commit_message)])
+        votes = mywid.Table([])
+
+        self.listbox = urwid.ListBox(urwid.SimpleFocusListWalker([]))
+        self._w.contents.append((self.app.header, ('pack', 1)))
+        self._w.contents.append((urwid.Divider(), ('pack', 1)))
+        self._w.contents.append((top, ('pack', None)))
+        self._w.contents.append((urwid.Divider(), ('pack', 1)))
+        self._w.contents.append((votes, ('pack', None)))
+        self._w.contents.append((urwid.Divider(), ('pack', 1)))
+        self._w.contents.append((self.listbox, ('weight', 1)))
+        self._w.set_focus(6)
+
+        self.refresh()
+
+    def refresh(self):
+        change_info = []
+        with self.app.db.getSession() as session:
+            change = session.getChange(self.change_key)
+            if change.reviewed:
+                reviewed = ' (reviewed)'
+            else:
+                reviewed = ''
+            self.title = 'Change %s%s' % (change.number, reviewed)
+            self.app.status.update(title=self.title)
+            self.project_key = change.project.key
+
+            self.change_id_label.set_text(('change-data', change.change_id))
+            self.owner_label.set_text(('change-data', change.owner))
+            self.project_label.set_text(('change-data', change.project.name))
+            self.branch_label.set_text(('change-data', change.branch))
+            self.topic_label.set_text(('change-data', change.topic or ''))
+            self.created_label.set_text(('change-data', str(change.created)))
+            self.updated_label.set_text(('change-data', str(change.updated)))
+            self.status_label.set_text(('change-data', change.status))
+            self.commit_message.set_text(change.revisions[-1].message)
+
+            categories = []
+            approval_headers = [urwid.Text(('table-header', 'Name'))]
+            for label in change.labels:
+                if label.category in categories:
+                    continue
+                approval_headers.append(urwid.Text(('table-header', label.category)))
+                categories.append(label.category)
+            votes = mywid.Table(approval_headers)
+            approvals_for_name = {}
+            for approval in change.approvals:
+                approvals = approvals_for_name.get(approval.name)
+                if not approvals:
+                    approvals = {}
+                    row = []
+                    row.append(urwid.Text(approval.name))
+                    for i, category in enumerate(categories):
+                        w = urwid.Text(u'')
+                        approvals[category] = w
+                        row.append(w)
+                    approvals_for_name[approval.name] = approvals
+                    votes.addRow(row)
+                if str(approval.value) != '0':
+                    approvals[approval.category].set_text(str(approval.value))
+            votes = urwid.Padding(votes, width='pack')
+
+            # TODO: update the existing table rather than replacing it
+            # wholesale.  It will become more important if the table
+            # gets selectable items (like clickable names).
+            self._w.contents[4] = (votes, ('pack', None))
+
+            repo = self.app.getRepo(change.project.name)
+            # The listbox has both revisions and messages in it (and
+            # may later contain the vote table and change header), so
+            # keep track of the index separate from the loop.
+            listbox_index = 0
+            for revno, revision in enumerate(change.revisions):
+                row = self.revision_rows.get(revision.key)
+                if not row:
+                    row = RevisionRow(self.app, self, repo, revision,
+                                      expanded=(revno==len(change.revisions)-1))
+                    self.listbox.body.insert(listbox_index, row)
+                    self.revision_rows[revision.key] = row
+                # Revisions are extremely unlikely to be deleted, skip
+                # that case.
+                listbox_index += 1
+            if len(self.listbox.body) == listbox_index:
+                self.listbox.body.insert(listbox_index, urwid.Divider())
+                listbox_index += 1
+            for message in change.messages:
+                row = self.message_rows.get(message.key)
+                if not row:
+                    row = ChangeMessageBox(message)
+                    self.listbox.body.insert(listbox_index, row)
+                    self.message_rows[message.key] = row
+                # Messages are extremely unlikely to be deleted, skip
+                # that case.
+                listbox_index += 1
+
+    def toggleReviewed(self):
+        with self.app.db.getSession() as session:
+            change = session.getChange(self.change_key)
+            change.reviewed = not change.reviewed
+
+    def keypress(self, size, key):
+        r = super(ChangeView, self).keypress(size, key)
+        if r=='r':
+            self.toggleReviewed()
+            self.refresh()
+            return None
+        return r
+
+    def diff(self, revision_key):
+        self.app.changeScreen(view.diff.DiffView(self.app, revision_key))

gertty/view/change_list.py

@@ -0,0 +1,140 @@
+# Copyright 2014 OpenStack Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS