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Change-Id: Ie79f257c46a2c50abdd7ce63bfeceaad976ca878

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+*.pyc

LICENSE

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+
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+
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README.rst

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+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

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+# 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

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+# 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 OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import urwid
+
+import view.change
+
+class ChangeRow(urwid.Button):
+    change_focus_map = {None: 'reversed',
+                        'unreviewed-change': 'reversed-unreviewed-change',
+                        'reviewed-change': 'reversed-reviewed-change',
+                        }
+
+    def selectable(self):
+        return True
+
+    def __init__(self, change, callback=None):
+        super(ChangeRow, self).__init__('', on_press=callback, user_data=change.key)
+        self.change_key = change.key
+        self.subject = urwid.Text(u'', wrap='clip')
+        self.number = urwid.Text(u'')
+        cols = [(8, self.number), self.subject]
+        self.columns = urwid.Columns(cols)
+        self.row_style = urwid.AttrMap(self.columns, '')
+        self._w = urwid.AttrMap(self.row_style, None, focus_map=self.change_focus_map)
+        self.update(change)
+
+    def update(self, change):
+        if change.reviewed:
+            style = 'reviewed-change'
+        else:
+            style = 'unreviewed-change'
+        self.row_style.set_attr_map({None: style})
+        self.subject.set_text(change.subject)
+        self.number.set_text(str(change.number))
+        del self.columns.contents[2:]
+        for category in change.getCategories():
+            v = change.getMaxForCategory(category)
+            if v == 0:
+                v = ''
+            else:
+                v = '%2i' % v
+            self.columns.contents.append((urwid.Text(v), self.columns.options('given', 3)))
+
+class ChangeListHeader(urwid.WidgetWrap):
+    def __init__(self):
+        cols = [(8, urwid.Text(u'Number')), urwid.Text(u'Subject')]
+        super(ChangeListHeader, self).__init__(urwid.Columns(cols))
+
+    def update(self, change):
+        del self._w.contents[2:]
+        for category in change.getCategories():
+            self._w.contents.append((urwid.Text(' %s' % category[0]), self._w.options('given', 3)))
+
+class ChangeListView(urwid.WidgetWrap):
+    help = """
+<l>   Toggle whether only unreviewed or all changes are displayed.
+<r>   Toggle the reviewed flag for the currently selected change.
+<ESC> Go back to the previous screen.
+"""
+
+    def __init__(self, app, project_key):
+        super(ChangeListView, self).__init__(urwid.Pile([]))
+        self.app = app
+        self.project_key = project_key
+        self.unreviewed = True
+        self.change_rows = {}
+        self.listbox = urwid.ListBox(urwid.SimpleFocusListWalker([]))
+        self.header = ChangeListHeader()
+        self.refresh()
+        self._w.contents.append((app.header, ('pack', 1)))
+        self._w.contents.append((urwid.Divider(), ('pack', 1)))
+        self._w.contents.append((urwid.AttrWrap(self.header, 'table-header'), ('pack', 1)))
+        self._w.contents.append((self.listbox, ('weight', 1)))
+        self._w.set_focus(3)
+
+    def refresh(self):
+        unseen_keys = set(self.change_rows.keys())
+        with self.app.db.getSession() as session:
+            project = session.getProject(self.project_key)
+            self.project_name = project.name
+            if self.unreviewed:
+                self.title = u'Unreviewed changes in %s' % project.name
+                lst = project.unreviewed_changes
+            else:
+                self.title = u'Open changes in %s' % project.name
+                lst = project.changes
+            self.app.status.update(title=self.title)
+            i = 0
+            for change in lst:
+                row = self.change_rows.get(change.key)
+                if not row:
+                    row = ChangeRow(change, self.onSelect)
+                    self.listbox.body.insert(i, row)
+                    self.change_rows[change.key] = row
+                else:
+                    row.update(change)
+                    unseen_keys.remove(change.key)
+                i += 1
+            if project.changes:
+                self.header.update(project.changes[0])
+        for key in unseen_keys:
+            row = self.change_rows[key]
+            self.listbox.body.remove(row)
+            del self.change_rows[key]
+
+    def toggleReviewed(self, change_key):
+        with self.app.db.getSession() as session:
+            change = session.getChange(change_key)
+            change.reviewed = not change.reviewed
+            ret = change.reviewed
+        return ret
+
+    def keypress(self, size, key):
+        if key=='l':
+            self.unreviewed = not self.unreviewed
+            self.refresh()
+            return None
+        if key=='r':
+            if not len(self.listbox.body):
+                return None
+            pos = self.listbox.focus_position
+            reviewed = self.toggleReviewed(self.listbox.body[pos].change_key)
+            self.refresh()
+            return None
+        return super(ChangeListView, self).keypress(size, key)
+
+    def onSelect(self, button, change_key):
+        self.app.changeScreen(view.change.ChangeView(self.app, change_key))

gertty/view/diff.py

@@ -0,0 +1,261 @@
+# 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
+
+class LineContext(object):
+    def __init__(self, old_revision_key, new_revision_key,
+                 old_revision_num, new_revision_num,
+                 old_fn, new_fn, old_ln, new_ln):
+        self.old_revision_key = old_revision_key
+        self.new_revision_key = new_revision_key
+        self.old_revision_num = old_revision_num
+        self.new_revision_num = new_revision_num
+        self.old_fn = old_fn
+        self.new_fn = new_fn
+        self.old_ln = old_ln
+        self.new_ln = new_ln
+
+class DiffCommentEdit(urwid.Columns):
+    def __init__(self, context, old_key=None, new_key=None, old=u'', new=u''):
+        super(DiffCommentEdit, self).__init__([])
+        self.context = context
+        # If we save a comment, the resulting key will be stored here
+        self.old_key = old_key
+        self.new_key = new_key
+        self.old = urwid.Edit(edit_text=old, multiline=True)
+        self.new = urwid.Edit(edit_text=new, multiline=True)
+        self.contents.append((urwid.Text(u''), ('given', 4, False)))
+        self.contents.append((urwid.AttrMap(self.old, 'draft-comment'), ('weight', 1, False)))
+        self.contents.append((urwid.Text(u''), ('given', 4, False)))
+        self.contents.append((urwid.AttrMap(self.new, 'draft-comment'), ('weight', 1, False)))
+        self.focus_position = 3
+
+    def keypress(self, size, key):
+        r = super(DiffCommentEdit, self).keypress(size, key)
+        if r in ['tab', 'shift tab']:
+            if self.focus_position == 3:
+                self.focus_position = 1
+            else:
+                self.focus_position = 3
+            return None
+        return r
+
+class DiffComment(urwid.Columns):
+    def __init__(self, context, old, new):
+        super(DiffComment, self).__init__([])
+        self.context = context
+        self.old = urwid.AttrMap(urwid.Text(old), 'comment')
+        self.new = urwid.AttrMap(urwid.Text(new), 'comment')
+        self.contents.append((urwid.Text(u''), ('given', 4, False)))
+        self.contents.append((self.old, ('weight', 1, False)))
+        self.contents.append((urwid.Text(u''), ('given', 4, False)))
+        self.contents.append((self.new, ('weight', 1, False)))
+
+class DiffLine(urwid.Button):
+    def selectable(self):
+        return True
+
+    def __init__(self, app, context, old, new, callback=None):
+        super(DiffLine, self).__init__('', on_press=callback)
+        self.context = context
+        columns = []
+        for (ln, action, line) in (old, new):
+            if ln is None:
+                ln = ''
+            else:
+                ln = str(ln)
+            ln_col = urwid.Text(ln)
+            ln_col.set_wrap_mode('clip')
+            line_col = urwid.Text(line)
+            line_col.set_wrap_mode('clip')
+            if action == '':
+                line_col = urwid.AttrMap(line_col, 'nonexistent')
+            columns += [(4, ln_col), line_col]
+        col = urwid.Columns(columns)
+        map = {None: 'reversed',
+               'added-line': 'reversed-added-line',
+               'added-word': 'reversed-added-word',
+               'removed-line': 'reversed-removed-line',
+               'removed-word': 'reversed-removed-word',
+               'nonexistent': 'reversed-nonexistent',
+               }
+        self._w = urwid.AttrMap(col, None, focus_map=map)
+
+class DiffView(urwid.WidgetWrap):
+    help = """
+<Enter> Add an inline comment.
+<ESC>   Go back to the previous screen.
+"""
+
+    def __init__(self, app, new_revision_key):
+        super(DiffView, self).__init__(urwid.Pile([]))
+        self.app = app
+        self.new_revision_key = new_revision_key
+        with self.app.db.getSession() as session:
+            revision = session.getRevision(new_revision_key)
+            self.title = u'Diff of %s change %s patchset %s' % (
+                revision.change.project.name,
+                revision.change.number,
+                revision.number)
+            self.new_revision_num = revision.number
+            self.change_key = revision.change.key
+            self.project_name = revision.change.project.name
+            self.parent = revision.parent
+            self.commit = revision.commit
+            comment_lists = {}
+            for comment in revision.comments:
+                if comment.parent:
+                    key = 'old'
+                else:
+                    key = 'new'
+                if comment.pending:
+                    key += 'draft'
+                key += '-' + str(comment.line)
+                key += '-' + str(comment.file)
+                comment_list = comment_lists.get(key, [])
+                comment_list.append((comment.key, comment.message))
+                comment_lists[key] = comment_list
+        repo = self.app.getRepo(self.project_name)
+        self._w.contents.append((app.header, ('pack', 1)))
+        self._w.contents.append((urwid.Divider(), ('pack', 1)))
+        lines = []
+        # this is a list of files:
+        for i, diff in enumerate(repo.diff(self.parent, self.commit)):
+            if i > 0:
+                lines.append(urwid.Text(''))
+            lines.append(urwid.Columns([
+                        urwid.Text(diff.oldname),
+                        urwid.Text(diff.newname)]))
+            for i, old in enumerate(diff.oldlines):
+                new = diff.newlines[i]
+                context = LineContext(
+                    None, self.new_revision_key,
+                    None, self.new_revision_num,
+                    diff.oldname, diff.newname,
+                    old[0], new[0])
+                lines.append(DiffLine(self.app, context, old, new,
+                                      callback=self.onSelect))
+                # see if there are any comments for this line
+                key = 'old-%s-%s' % (old[0], diff.oldname)
+                old_list = comment_lists.get(key, [])
+                key = 'new-%s-%s' % (old[0], diff.oldname)
+                new_list = comment_lists.get(key, [])
+                while old_list or new_list:
+                    old_comment_key = new_comment_key = None
+                    old_comment = new_comment = u''
+                    if old_list:
+                        (old_comment_key, old_comment) = old_list.pop(0)
+                    if new_list:
+                        (new_comment_key, new_comment) = new_list.pop(0)
+                    lines.append(DiffComment(context, old_comment, new_comment))
+                # see if there are any draft comments for this line
+                key = 'olddraft-%s-%s' % (old[0], diff.oldname)
+                old_list = comment_lists.get(key, [])
+                key = 'newdraft-%s-%s' % (old[0], diff.oldname)
+                new_list = comment_lists.get(key, [])
+                while old_list or new_list:
+                    old_comment_key = new_comment_key = None
+                    old_comment = new_comment = u''
+                    if old_list:
+                        (old_comment_key, old_comment) = old_list.pop(0)
+                    if new_list:
+                        (new_comment_key, new_comment) = new_list.pop(0)
+                    lines.append(DiffCommentEdit(context,
+                                                 old_comment_key,
+                                                 new_comment_key,
+                                                 old_comment, new_comment))
+        listwalker = urwid.SimpleFocusListWalker(lines)
+        self.listbox = urwid.ListBox(listwalker)
+        self._w.contents.append((self.listbox, ('weight', 1)))
+        self.old_focus = 2
+        self.draft_comments = []
+        self._w.set_focus(self.old_focus)
+
+    def refresh(self):
+        #TODO
+        pass
+
+    def keypress(self, size, key):
+        old_focus = self.listbox.focus
+        r = super(DiffView, self).keypress(size, key)
+        new_focus = self.listbox.focus
+        if old_focus != new_focus and isinstance(old_focus, DiffCommentEdit):
+            self.cleanupEdit(old_focus)
+        return r
+
+    def mouse_event(self, size, event, button, x, y, focus):
+        old_focus = self.listbox.focus
+        r = super(DiffView, self).mouse_event(size, event, button, x, y, focus)
+        new_focus = self.listbox.focus
+        if old_focus != new_focus and isinstance(old_focus, DiffCommentEdit):
+            self.cleanupEdit(old_focus)
+        return r
+
+    def onSelect(self, button):
+        pos = self.listbox.focus_position
+        e = DiffCommentEdit(self.listbox.body[pos].context)
+        self.listbox.body.insert(pos+1, e)
+        self.listbox.focus_position = pos+1
+
+    def cleanupEdit(self, edit):
+        if edit.old_key:
+            self.deleteComment(edit.old_key)
+            edit.old_key = None
+        if edit.new_key:
+            self.deleteComment(edit.new_key)
+            edit.new_key = None
+        old = edit.old.edit_text.strip()
+        new = edit.new.edit_text.strip()
+        if old or new:
+            if old:
+                edit.old_key = self.saveComment(
+                    edit.context, old, new=False)
+            if new:
+                edit.new_key = self.saveComment(
+                    edit.context, new, new=True)
+        else:
+            self.listbox.body.remove(edit)
+
+    def deleteComment(self, comment_key):
+        with self.app.db.getSession() as session:
+            comment = session.getComment(comment_key)
+            session.delete(comment)
+
+    def saveComment(self, context, text, new=True):
+        if (not new) and (not context.old_revision_num):
+            parent = True
+            revision_key = context.new_revision_key
+        else:
+            parent = False
+            if new:
+                revision_key = context.new_revision_key
+            else:
+                revision_key = context.old_revision_key
+        if new:
+            line_num = context.new_ln
+            filename = context.new_fn
+        else:
+            line_num = context.old_ln
+            filename = context.old_fn
+        with self.app.db.getSession() as session:
+            revision = session.getRevision(revision_key)
+            comment = revision.createComment(None, None,
+                                             datetime.datetime.utcnow(),
+                                             None, filename, parent,
+                                             line_num, text, pending=True)
+            key = comment.key
+        return key

gertty/view/project_list.py

@@ -0,0 +1,127 @@
+# 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
+
+import sync
+import view.change_list
+
+class ProjectRow(urwid.Button):
+    project_focus_map = {None: 'reversed',
+                         'unreviewed-project': 'reversed-unreviewed-project',
+                         'subscribed-project': 'reversed-subscribed-project',
+                         'unsubscribed-project': 'reversed-unsubscribed-project',
+                         }
+
+    def selectable(self):
+        return True
+
+    def __init__(self, project, callback=None):
+        super(ProjectRow, self).__init__('', on_press=callback, user_data=project.key)
+        self.project_key = project.key
+        name = urwid.Text(u' '+project.name)
+        name.set_wrap_mode('clip')
+        self.unreviewed_changes = urwid.Text(u'')
+        self.reviewed_changes = urwid.Text(u'')
+        col = urwid.Columns([
+                name,
+                ('fixed', 4, self.unreviewed_changes),
+                ('fixed', 4, self.reviewed_changes),
+                ])
+        self.row_style = urwid.AttrMap(col, '')
+        self._w = urwid.AttrMap(self.row_style, None, focus_map=self.project_focus_map)
+        self.update(project)
+
+    def update(self, project):
+        if project.subscribed:
+            if len(project.unreviewed_changes) > 0:
+                style = 'unreviewed-project'
+            else:
+                style = 'subscribed-project'
+        else:
+            style = 'unsubscribed-project'
+        self.row_style.set_attr_map({None: style})
+        self.unreviewed_changes.set_text(str(len(project.unreviewed_changes)))
+        self.reviewed_changes.set_text(str(len(project.reviewed_changes)))
+
+class ProjectListView(urwid.WidgetWrap):
+    help = """
+<l>   Toggle whether only subscribed projects or all projects are listed.
+<s>   Toggle the subscription flag for the currently selected project.
+"""
+
+    def __init__(self, app):
+        super(ProjectListView, self).__init__(urwid.Pile([]))
+        self.app = app
+        self.subscribed = True
+        self.project_rows = {}
+        self.listbox = urwid.ListBox(urwid.SimpleFocusListWalker([]))
+        self.refresh()
+        self._w.contents.append((app.header, ('pack', 1)))
+        self._w.contents.append((urwid.Divider(),('pack', 1)))
+        self._w.contents.append((self