9 files changed, 2046 insertions, 0 deletions
diff --git a/extensions/cpsection/updater/Makefile.am b/extensions/cpsection/updater/Makefile.am
new file mode 100644
index 0000000..897dbf3
--- /dev/null
+++ b/extensions/cpsection/updater/Makefile.am
@@ -0,0 +1,8 @@
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+
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+	__init__.py	\
+	model.py	\
+	view.py		
diff --git a/extensions/cpsection/updater/Makefile.in b/extensions/cpsection/updater/Makefile.in
new file mode 100644
index 0000000..dd9b2ec
--- /dev/null
+++ b/extensions/cpsection/updater/Makefile.in
@@ -0,0 +1,645 @@
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diff --git a/extensions/cpsection/updater/__init__.py b/extensions/cpsection/updater/__init__.py
new file mode 100644
index 0000000..6010615
--- /dev/null
+++ b/extensions/cpsection/updater/__init__.py
@@ -0,0 +1,22 @@
+# Copyright (C) 2008, OLPC
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+from gettext import gettext as _
+
+CLASS = 'ActivityUpdater'
+ICON = 'module-updater'
+TITLE = _('Software update')
+KEYWORDS = ['software', 'activity', 'update']
diff --git a/extensions/cpsection/updater/backends/Makefile.am b/extensions/cpsection/updater/backends/Makefile.am
new file mode 100644
index 0000000..e280a07
--- /dev/null
+++ b/extensions/cpsection/updater/backends/Makefile.am
@@ -0,0 +1,5 @@
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+
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diff --git a/extensions/cpsection/updater/backends/Makefile.in b/extensions/cpsection/updater/backends/Makefile.in
new file mode 100644
index 0000000..49e509c
--- /dev/null
+++ b/extensions/cpsection/updater/backends/Makefile.in
@@ -0,0 +1,441 @@
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+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-sugarPYTHON
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-sugarPYTHON
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic distclean \
+	distclean-generic distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip install-sugarPYTHON installcheck installcheck-am \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-generic pdf pdf-am ps ps-am uninstall \
+	uninstall-am uninstall-sugarPYTHON
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/extensions/cpsection/updater/backends/__init__.py b/extensions/cpsection/updater/backends/__init__.py
new file mode 100644
index 0000000..0dd0174
--- /dev/null
+++ b/extensions/cpsection/updater/backends/__init__.py
@@ -0,0 +1,16 @@
+#!/usr/bin/python
+# Copyright (C) 2009, Sugar Labs
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
diff --git a/extensions/cpsection/updater/backends/aslo.py b/extensions/cpsection/updater/backends/aslo.py
new file mode 100644
index 0000000..6504e9e
--- /dev/null
+++ b/extensions/cpsection/updater/backends/aslo.py
@@ -0,0 +1,164 @@
+#!/usr/bin/python
+# Copyright (C) 2009, Sugar Labs
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+"""Activity information microformat parser.
+
+Activity information is embedded in HTML/XHTML/XML pages using a
+Resource Description Framework (RDF) http://www.w3.org/RDF/ .
+
+An example::
+
+<?xml version="1.0" encoding="UTF-8"?>
+<RDF:RDF xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+        xmlns:em="http://www.mozilla.org/2004/em-rdf#">
+<RDF:Description about="urn:mozilla:extension:bounce">
+    <em:updates>
+        <RDF:Seq>
+            <RDF:li resource="urn:mozilla:extension:bounce:7"/>
+        </RDF:Seq>
+    </em:updates>
+</RDF:Description>
+
+<RDF:Description about="urn:mozilla:extension:bounce:7">
+    <em:version>7</em:version>
+    <em:targetApplication>
+        <RDF:Description>
+            <em:id>{3ca105e0-2280-4897-99a0-c277d1b733d2}</em:id>
+            <em:minVersion>0.82</em:minVersion>
+            <em:maxVersion>0.84</em:maxVersion>
+            <em:updateLink>http://foo.xo</em:updateLink>
+            <em:updateSize>7</em:updateSize>
+            <em:updateHash>sha256:816a7c43b4f1ea4769c61c03ea4..</em:updateHash>
+        </RDF:Description>
+    </em:targetApplication>
+</RDF:Description></RDF:RDF>
+"""
+
+import logging
+from xml.etree.ElementTree import XML
+import traceback
+
+import gio
+
+from sugar.bundle.bundleversion import NormalizedVersion
+from sugar.bundle.bundleversion import InvalidVersionError
+
+from jarabe import config
+
+_FIND_DESCRIPTION = \
+        './/{http://www.w3.org/1999/02/22-rdf-syntax-ns#}Description'
+_FIND_VERSION = './/{http://www.mozilla.org/2004/em-rdf#}version'
+_FIND_LINK = './/{http://www.mozilla.org/2004/em-rdf#}updateLink'
+_FIND_SIZE = './/{http://www.mozilla.org/2004/em-rdf#}updateSize'
+
+_UPDATE_PATH = 'http://activities.sugarlabs.org/services/update-aslo.php'
+
+_fetcher = None
+
+
+class _UpdateFetcher(object):
+
+    _CHUNK_SIZE = 10240
+
+    def __init__(self, bundle, completion_cb):
+        # ASLO knows only about stable SP releases
+        major, minor = config.version.split('.')[0:2]
+        sp_version = '%s.%s' % (major, int(minor) + int(minor) % 2)
+
+        url = '%s?id=%s&appVersion=%s' % \
+                (_UPDATE_PATH, bundle.get_bundle_id(), sp_version)
+
+        logging.debug('Fetch %s', url)
+
+        self._completion_cb = completion_cb
+        self._file = gio.File(url)
+        self._stream = None
+        self._xml_data = ''
+        self._bundle = bundle
+
+        self._file.read_async(self.__file_read_async_cb)
+
+    def __file_read_async_cb(self, gfile, result):
+        try:
+            self._stream = self._file.read_finish(result)
+        except:
+            global _fetcher
+            _fetcher = None
+            self._completion_cb(None, None, None, None, traceback.format_exc())
+            return
+
+        self._stream.read_async(self._CHUNK_SIZE, self.__stream_read_async_cb)
+
+    def __stream_read_async_cb(self, stream, result):
+        xml_data = self._stream.read_finish(result)
+        if xml_data is None:
+            global _fetcher
+            _fetcher = None
+            self._completion_cb(self._bundle, None, None, None,
+                    'Error reading update information for %s from '
+                    'server.' % self._bundle.get_bundle_id())
+            return
+        elif not xml_data:
+            self._process_result()
+        else:
+            self._xml_data += xml_data
+            self._stream.read_async(self._CHUNK_SIZE,
+                                    self.__stream_read_async_cb)
+
+    def _process_result(self):
+        document = XML(self._xml_data)
+
+        if document.find(_FIND_DESCRIPTION) is None:
+            logging.debug('Bundle %s not available in the server for the '
+                'version %s', self._bundle.get_bundle_id(), config.version)
+            version = None
+            link = None
+            size = None
+        else:
+            try:
+                version = NormalizedVersion(document.find(_FIND_VERSION).text)
+            except InvalidVersionError:
+                logging.exception('Exception occured while parsing version')
+                version = '0'
+
+            link = document.find(_FIND_LINK).text
+
+            try:
+                size = long(document.find(_FIND_SIZE).text) * 1024
+            except ValueError:
+                logging.exception('Exception occured while parsing size')
+                size = 0
+
+        global _fetcher
+        _fetcher = None
+        self._completion_cb(self._bundle, version, link, size, None)
+
+
+def fetch_update_info(bundle, completion_cb):
+    """Queries the server for a newer version of the ActivityBundle.
+
+       completion_cb receives bundle, version, link, size and possibly an error
+       message:
+
+       def completion_cb(bundle, version, link, size, error_message):
+    """
+    global _fetcher
+
+    if _fetcher is not None:
+        raise RuntimeError('Multiple simultaneous requests are not supported')
+
+    _fetcher = _UpdateFetcher(bundle, completion_cb)
diff --git a/extensions/cpsection/updater/model.py b/extensions/cpsection/updater/model.py
new file mode 100755
index 0000000..7ea445f
--- /dev/null
+++ b/extensions/cpsection/updater/model.py
@@ -0,0 +1,354 @@
+# Copyright (C) 2009, Sugar Labs
+# Copyright (C) 2009, Tomeu Vizoso
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+"""Sugar bundle updater: model.
+
+This module implements the non-GUI portions of the bundle updater, including
+list of installed bundls, whether updates are needed, and the URL at which to
+find the bundle updated.
+"""
+
+import os
+import logging
+import tempfile
+from urlparse import urlparse
+import traceback
+
+import gobject
+import gio
+
+from sugar import env
+from sugar.datastore import datastore
+from sugar.bundle.activitybundle import ActivityBundle
+from sugar.bundle.bundleversion import NormalizedVersion
+
+from jarabe.model import bundleregistry
+
+from backends import aslo
+
+
+class UpdateModel(gobject.GObject):
+    __gtype_name__ = 'SugarUpdateModel'
+
+    __gsignals__ = {
+        'progress': (gobject.SIGNAL_RUN_FIRST,
+                     gobject.TYPE_NONE,
+                     ([int, str, float, int])),
+    }
+
+    ACTION_CHECKING = 0
+    ACTION_UPDATING = 1
+    ACTION_DOWNLOADING = 2
+
+    def __init__(self):
+        gobject.GObject.__init__(self)
+
+        self.updates = None
+        self._bundles_to_check = None
+        self._bundles_to_update = None
+        self._total_bundles_to_update = 0
+        self._downloader = None
+        self._cancelling = False
+
+    def check_updates(self):
+        self.updates = []
+        self._bundles_to_check = list(bundleregistry.get_registry())
+        self._check_next_update()
+
+    def _check_next_update(self):
+        total = len(bundleregistry.get_registry())
+        current = total - len(self._bundles_to_check)
+
+        if not self._bundles_to_check:
+            return False
+
+        bundle = self._bundles_to_check.pop()
+        self.emit('progress', UpdateModel.ACTION_CHECKING, bundle.get_name(),
+                  current, total)
+
+        aslo.fetch_update_info(bundle, self.__check_completed_cb)
+
+    def __check_completed_cb(self, bundle, version, link, size, error_message):
+        if error_message is not None:
+            logging.error('Error getting update information from server:\n'
+                          '%s' % error_message)
+
+        if version is not None and \
+                version > NormalizedVersion(bundle.get_activity_version()):
+            self.updates.append(BundleUpdate(bundle, version, link, size))
+
+        if self._cancelling:
+            self._cancel_checking()
+        elif self._bundles_to_check:
+            gobject.idle_add(self._check_next_update)
+        else:
+            total = len(bundleregistry.get_registry())
+            if bundle is None:
+                name = ''
+            else:
+                name = bundle.get_name()
+            self.emit('progress', UpdateModel.ACTION_CHECKING, name, total,
+                      total)
+
+    def update(self, bundle_ids):
+        self._bundles_to_update = []
+        for bundle_update in self.updates:
+            if bundle_update.bundle.get_bundle_id() in bundle_ids:
+                self._bundles_to_update.append(bundle_update)
+
+        self._total_bundles_to_update = len(self._bundles_to_update)
+        self._download_next_update()
+
+    def _download_next_update(self):
+        if self._cancelling:
+            self._cancel_updating()
+            return
+
+        bundle_update = self._bundles_to_update.pop()
+
+        total = self._total_bundles_to_update * 2
+        current = total - len(self._bundles_to_update) * 2 - 2
+
+        self.emit('progress', UpdateModel.ACTION_DOWNLOADING,
+                  bundle_update.bundle.get_name(), current, total)
+
+        self._downloader = _Downloader(bundle_update)
+        self._downloader.connect('progress', self.__downloader_progress_cb)
+        self._downloader.connect('error', self.__downloader_error_cb)
+
+    def __downloader_progress_cb(self, downloader, progress):
+        logging.debug('__downloader_progress_cb %r', progress)
+
+        if self._cancelling:
+            self._cancel_updating()
+            return
+
+        total = self._total_bundles_to_update * 2
+        current = total - len(self._bundles_to_update) * 2 - 2 + progress
+
+        self.emit('progress', UpdateModel.ACTION_DOWNLOADING,
+                  self._downloader.bundle_update.bundle.get_name(),
+                  current, total)
+
+        if progress == 1:
+            self._install_update(self._downloader.bundle_update,
+                                 self._downloader.get_local_file_path())
+            self._downloader = None
+
+    def __downloader_error_cb(self, downloader, error_message):
+        logging.error('Error downloading update:\n%s', error_message)
+
+        if self._cancelling:
+            self._cancel_updating()
+            return
+
+        total = self._total_bundles_to_update
+        current = total - len(self._bundles_to_update)
+        self.emit('progress', UpdateModel.ACTION_UPDATING, '', current, total)
+
+        if self._bundles_to_update:
+            # do it in idle so the UI has a chance to refresh
+            gobject.idle_add(self._download_next_update)
+
+    def _install_update(self, bundle_update, local_file_path):
+
+        total = self._total_bundles_to_update
+        current = total - len(self._bundles_to_update) - 0.5
+
+        self.emit('progress', UpdateModel.ACTION_UPDATING,
+                  bundle_update.bundle.get_name(),
+                  current, total)
+
+        # TODO: Should we first expand the zip async so we can provide progress
+        # and only then copy to the journal?
+        jobject = datastore.create()
+        try:
+            title = '%s-%s' % (bundle_update.bundle.get_name(),
+                               bundle_update.version)
+            jobject.metadata['title'] = title
+            jobject.metadata['mime_type'] = ActivityBundle.MIME_TYPE
+            jobject.file_path = local_file_path
+            datastore.write(jobject, transfer_ownership=True)
+        finally:
+            jobject.destroy()
+
+        self.emit('progress', UpdateModel.ACTION_UPDATING,
+                  bundle_update.bundle.get_name(),
+                  current + 0.5, total)
+
+        if self._bundles_to_update:
+            # do it in idle so the UI has a chance to refresh
+            gobject.idle_add(self._download_next_update)
+
+    def cancel(self):
+        self._cancelling = True
+
+    def _cancel_checking(self):
+        logging.debug('UpdateModel._cancel_checking')
+        total = len(bundleregistry.get_registry())
+        current = total - len(self._bundles_to_check)
+        self.emit('progress', UpdateModel.ACTION_CHECKING, '', current,
+                  current)
+        self._bundles_to_check = None
+        self._cancelling = False
+
+    def _cancel_updating(self):
+        logging.debug('UpdateModel._cancel_updating')
+        current = (self._total_bundles_to_update -
+                   len(self._bundles_to_update) - 1)
+        self.emit('progress', UpdateModel.ACTION_UPDATING, '', current,
+                  current)
+
+        if self._downloader is not None:
+            self._downloader.cancel()
+            file_path = self._downloader.get_local_file_path()
+            if file_path is not None and os.path.exists(file_path):
+                os.unlink(file_path)
+            self._downloader = None
+
+        self._total_bundles_to_update = 0
+        self._bundles_to_update = None
+        self._cancelling = False
+
+
+class BundleUpdate(object):
+
+    def __init__(self, bundle, version, link, size):
+        self.bundle = bundle
+        self.version = version
+        self.link = link
+        self.size = size
+
+
+class _Downloader(gobject.GObject):
+    _CHUNK_SIZE = 10240  # 10K
+    __gsignals__ = {
+        'progress': (gobject.SIGNAL_RUN_FIRST,
+                     gobject.TYPE_NONE,
+                     ([float])),
+        'error': (gobject.SIGNAL_RUN_FIRST,
+                  gobject.TYPE_NONE,
+                  ([str])),
+    }
+
+    def __init__(self, bundle_update):
+        gobject.GObject.__init__(self)
+
+        self.bundle_update = bundle_update
+        self._input_stream = None
+        self._output_stream = None
+        self._pending_buffers = []
+        self._input_file = gio.File(bundle_update.link)
+        self._output_file = None
+        self._downloaded_size = 0
+        self._cancelling = False
+
+        self._input_file.read_async(self.__file_read_async_cb)
+
+    def cancel(self):
+        self._cancelling = True
+
+    def __file_read_async_cb(self, gfile, result):
+        if self._cancelling:
+            return
+
+        try:
+            self._input_stream = self._input_file.read_finish(result)
+        except:
+            self.emit('error', traceback.format_exc())
+            return
+
+        temp_file_path = self._get_temp_file_path(self.bundle_update.link)
+        self._output_file = gio.File(temp_file_path)
+        self._output_stream = self._output_file.create()
+
+        self._input_stream.read_async(self._CHUNK_SIZE, self.__read_async_cb,
+                                      gobject.PRIORITY_LOW)
+
+    def __read_async_cb(self, input_stream, result):
+        if self._cancelling:
+            return
+
+        data = input_stream.read_finish(result)
+
+        if data is None:
+            # TODO
+            pass
+        elif not data:
+            logging.debug('closing input stream')
+            self._input_stream.close()
+            self._check_if_finished_writing()
+        else:
+            self._pending_buffers.append(data)
+            self._input_stream.read_async(self._CHUNK_SIZE,
+                                          self.__read_async_cb,
+                                          gobject.PRIORITY_LOW)
+
+        self._write_next_buffer()
+
+    def __write_async_cb(self, output_stream, result, user_data):
+        if self._cancelling:
+            return
+
+        count = output_stream.write_finish(result)
+
+        self._downloaded_size += count
+        progress = self._downloaded_size / float(self.bundle_update.size)
+        self.emit('progress', progress)
+
+        self._check_if_finished_writing()
+
+        if self._pending_buffers:
+            self._write_next_buffer()
+
+    def _write_next_buffer(self):
+        if self._pending_buffers and not self._output_stream.has_pending():
+            data = self._pending_buffers.pop(0)
+            # TODO: we pass the buffer as user_data because of
+            # http://bugzilla.gnome.org/show_bug.cgi?id=564102
+            self._output_stream.write_async(data, self.__write_async_cb,
+                                            gobject.PRIORITY_LOW,
+                                            user_data=data)
+
+    def _get_temp_file_path(self, uri):
+        # TODO: Should we use the HTTP headers for the file name?
+        scheme_, netloc_, path, params_, query_, fragment_ = \
+                urlparse(uri)
+        path = os.path.basename(path)
+
+        if not os.path.exists(env.get_user_activities_path()):
+            os.makedirs(env.get_user_activities_path())
+
+        base_name, extension_ = os.path.splitext(path)
+        fd, file_path = tempfile.mkstemp(dir=env.get_user_activities_path(),
+                prefix=base_name, suffix='.xo')
+        os.close(fd)
+        os.unlink(file_path)
+
+        return file_path
+
+    def get_local_file_path(self):
+        return self._output_file.get_path()
+
+    def _check_if_finished_writing(self):
+        if not self._pending_buffers and \
+                not self._output_stream.has_pending() and \
+                self._input_stream.is_closed():
+
+            logging.debug('closing output stream')
+            self._output_stream.close()
+
+            self.emit('progress', 1.0)
diff --git a/extensions/cpsection/updater/view.py b/extensions/cpsection/updater/view.py
new file mode 100644
index 0000000..814658f
--- /dev/null
+++ b/extensions/cpsection/updater/view.py
@@ -0,0 +1,391 @@
+# Copyright (C) 2008, One Laptop Per Child
+# Copyright (C) 2009, Tomeu Vizoso
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+
+from gettext import gettext as _
+from gettext import ngettext
+import locale
+import logging
+
+import gobject
+import gtk
+
+from sugar.graphics import style
+from sugar.graphics.icon import Icon, CellRendererIcon
+
+from jarabe.controlpanel.sectionview import SectionView
+
+from model import UpdateModel
+
+_DEBUG_VIEW_ALL = True
+
+
+class ActivityUpdater(SectionView):
+
+    def __init__(self, model, alerts):
+        SectionView.__init__(self)
+
+        self._model = UpdateModel()
+        self._model.connect('progress', self.__progress_cb)
+
+        self.set_spacing(style.DEFAULT_SPACING)
+        self.set_border_width(style.DEFAULT_SPACING * 2)
+
+        self._top_label = gtk.Label()
+        self._top_label.set_line_wrap(True)
+        self._top_label.set_justify(gtk.JUSTIFY_LEFT)
+        self._top_label.props.xalign = 0
+        self.pack_start(self._top_label, expand=False)
+        self._top_label.show()
+
+        separator = gtk.HSeparator()
+        self.pack_start(separator, expand=False)
+        separator.show()
+
+        bottom_label = gtk.Label()
+        bottom_label.set_line_wrap(True)
+        bottom_label.set_justify(gtk.JUSTIFY_LEFT)
+        bottom_label.props.xalign = 0
+        bottom_label.set_markup(
+                _('Software updates correct errors, eliminate security ' \
+                  'vulnerabilities, and provide new features.'))
+        self.pack_start(bottom_label, expand=False)
+        bottom_label.show()
+
+        self._update_box = None
+        self._progress_pane = None
+
+        self._refresh()
+
+    def _switch_to_update_box(self):
+        if self._update_box in self.get_children():
+            return
+
+        if self._progress_pane in self.get_children():
+            self.remove(self._progress_pane)
+            self._progress_pane = None
+
+        if self._update_box is None:
+            self._update_box = UpdateBox(self._model)
+            self._update_box.refresh_button.connect('clicked',
+                    self.__refresh_button_clicked_cb)
+            self._update_box.install_button.connect('clicked',
+                    self.__install_button_clicked_cb)
+
+        self.pack_start(self._update_box, expand=True, fill=True)
+        self._update_box.show()
+
+    def _switch_to_progress_pane(self):
+        if self._progress_pane in self.get_children():
+            return
+
+        if self._update_box in self.get_children():
+            self.remove(self._update_box)
+            self._update_box = None
+
+        if self._progress_pane is None:
+            self._progress_pane = ProgressPane()
+            self._progress_pane.cancel_button.connect('clicked',
+                    self.__cancel_button_clicked_cb)
+
+        self.pack_start(self._progress_pane, expand=True, fill=False)
+        self._progress_pane.show()
+
+    def _clear_center(self):
+        if self._progress_pane in self.get_children():
+            self.remove(self._progress_pane)
+            self._progress_pane = None
+
+        if self._update_box in self.get_children():
+            self.remove(self._update_box)
+            self._update_box = None
+
+    def __progress_cb(self, model, action, bundle_name, current, total):
+        if current == total and action == UpdateModel.ACTION_CHECKING:
+            self._finished_checking()
+            return
+        elif current == total:
+            self._finished_updating(int(current))
+            return
+
+        if action == UpdateModel.ACTION_CHECKING:
+            message = _('Checking %s...') % bundle_name
+        elif action == UpdateModel.ACTION_DOWNLOADING:
+            message = _('Downloading %s...') % bundle_name
+        elif action == UpdateModel.ACTION_UPDATING:
+            message = _('Updating %s...') % bundle_name
+
+        self._switch_to_progress_pane()
+        self._progress_pane.set_message(message)
+        self._progress_pane.set_progress(current / float(total))
+
+    def _finished_checking(self):
+        logging.debug('ActivityUpdater._finished_checking')
+        available_updates = len(self._model.updates)
+        if not available_updates:
+            top_message = _('Your software is up-to-date')
+        else:
+            top_message = ngettext('You can install %s update',
+                                   'You can install %s updates',
+                                   available_updates)
+            top_message = top_message % available_updates
+            top_message = gobject.markup_escape_text(top_message)
+
+        self._top_label.set_markup('<big>%s</big>' % top_message)
+
+        if not available_updates:
+            self._clear_center()
+        else:
+            self._switch_to_update_box()
+            self._update_box.refresh()
+
+    def __refresh_button_clicked_cb(self, button):
+        self._refresh()
+
+    def _refresh(self):
+        top_message = _('Checking for updates...')
+        self._top_label.set_markup('<big>%s</big>' % top_message)
+        self._model.check_updates()
+
+    def __install_button_clicked_cb(self, button):
+        text = '<big>%s</big>' % _('Installing updates...')
+        self._top_label.set_markup(text)
+        self._model.update(self._update_box.get_bundles_to_update())
+
+    def __cancel_button_clicked_cb(self, button):
+        self._model.cancel()
+
+    def _finished_updating(self, installed_updates):
+        logging.debug('ActivityUpdater._finished_updating')
+        top_message = ngettext('%s update was installed',
+                               '%s updates were installed', installed_updates)
+        top_message = top_message % installed_updates
+        top_message = gobject.markup_escape_text(top_message)
+        self._top_label.set_markup('<big>%s</big>' % top_message)
+        self._clear_center()
+
+    def undo(self):
+        self._model.cancel()
+
+
+class ProgressPane(gtk.VBox):
+    """Container which replaces the `ActivityPane` during refresh or
+    install."""
+
+    def __init__(self):
+        gtk.VBox.__init__(self)
+        self.set_spacing(style.DEFAULT_PADDING)
+        self.set_border_width(style.DEFAULT_SPACING * 2)
+
+        self._progress = gtk.ProgressBar()
+        self.pack_start(self._progress)
+        self._progress.show()
+
+        self._label = gtk.Label()
+        self._label.set_line_wrap(True)
+        self._label.set_property('xalign', 0.5)
+        self._label.modify_fg(gtk.STATE_NORMAL,
+                              style.COLOR_BUTTON_GREY.get_gdk_color())
+        self.pack_start(self._label)
+        self._label.show()
+
+        alignment_box = gtk.Alignment(xalign=0.5, yalign=0.5)
+        self.pack_start(alignment_box)
+        alignment_box.show()
+
+        self.cancel_button = gtk.Button(stock=gtk.STOCK_CANCEL)
+        alignment_box.add(self.cancel_button)
+        self.cancel_button.show()
+
+    def set_message(self, message):
+        self._label.set_text(message)
+
+    def set_progress(self, fraction):
+        self._progress.props.fraction = fraction
+
+
+class UpdateBox(gtk.VBox):
+
+    def __init__(self, model):
+        gtk.VBox.__init__(self)
+
+        self._model = model
+
+        self.set_spacing(style.DEFAULT_PADDING)
+
+        scrolled_window = gtk.ScrolledWindow()
+        scrolled_window.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
+        self.pack_start(scrolled_window)
+        scrolled_window.show()
+
+        self._update_list = UpdateList(model)
+        self._update_list.props.model.connect('row-changed',
+                                              self.__row_changed_cb)
+        scrolled_window.add(self._update_list)
+        self._update_list.show()
+
+        bottom_box = gtk.HBox()
+        bottom_box.set_spacing(style.DEFAULT_SPACING)
+        self.pack_start(bottom_box, expand=False)
+        bottom_box.show()
+
+        self._size_label = gtk.Label()
+        self._size_label.props.xalign = 0
+        self._size_label.set_justify(gtk.JUSTIFY_LEFT)
+        bottom_box.pack_start(self._size_label, expand=True)
+        self._size_label.show()
+
+        self.refresh_button = gtk.Button(stock=gtk.STOCK_REFRESH)
+        bottom_box.pack_start(self.refresh_button, expand=False)
+        self.refresh_button.show()
+
+        self.install_button = gtk.Button(_('Install selected'))
+        self.install_button.props.image = Icon(icon_name='emblem-downloads',
+                                                icon_size=gtk.ICON_SIZE_BUTTON)
+        bottom_box.pack_start(self.install_button, expand=False)
+        self.install_button.show()
+
+        self._update_total_size_label()
+
+    def refresh(self):
+        self._update_list.refresh()
+
+    def __row_changed_cb(self, list_model, path, iterator):
+        self._update_total_size_label()
+        self._update_install_button()
+
+    def _update_total_size_label(self):
+        total_size = 0
+        for row in self._update_list.props.model:
+            if row[UpdateListModel.SELECTED]:
+                total_size += row[UpdateListModel.SIZE]
+
+        markup = _('Download size: %s') % _format_size(total_size)
+        self._size_label.set_markup(markup)
+
+    def _update_install_button(self):
+        for row in self._update_list.props.model:
+            if row[UpdateListModel.SELECTED]:
+                self.install_button.props.sensitive = True
+                return
+        self.install_button.props.sensitive = False
+
+    def get_bundles_to_update(self):
+        bundles_to_update = []
+        for row in self._update_list.props.model:
+            if row[UpdateListModel.SELECTED]:
+                bundles_to_update.append(row[UpdateListModel.BUNDLE_ID])
+        return bundles_to_update
+
+
+class UpdateList(gtk.TreeView):
+
+    def __init__(self, model):
+        list_model = UpdateListModel(model)
+        gtk.TreeView.__init__(self, list_model)
+
+        self.set_reorderable(False)
+        self.set_enable_search(False)
+        self.set_headers_visible(False)
+
+        toggle_renderer = gtk.CellRendererToggle()
+        toggle_renderer.props.activatable = True
+        toggle_renderer.props.xpad = style.DEFAULT_PADDING
+        toggle_renderer.props.indicator_size = style.zoom(26)
+        toggle_renderer.connect('toggled', self.__toggled_cb)
+
+        toggle_column = gtk.TreeViewColumn()
+        toggle_column.pack_start(toggle_renderer)
+        toggle_column.add_attribute(toggle_renderer, 'active',
+                                    UpdateListModel.SELECTED)
+        self.append_column(toggle_column)
+
+        icon_renderer = CellRendererIcon(self)
+        icon_renderer.props.width = style.STANDARD_ICON_SIZE
+        icon_renderer.props.height = style.STANDARD_ICON_SIZE
+        icon_renderer.props.size = style.STANDARD_ICON_SIZE
+        icon_renderer.props.xpad = style.DEFAULT_PADDING
+        icon_renderer.props.ypad = style.DEFAULT_PADDING
+        icon_renderer.props.stroke_color = style.COLOR_TOOLBAR_GREY.get_svg()
+        icon_renderer.props.fill_color = style.COLOR_TRANSPARENT.get_svg()
+
+        icon_column = gtk.TreeViewColumn()
+        icon_column.pack_start(icon_renderer)
+        icon_column.add_attribute(icon_renderer, 'file-name',
+                                  UpdateListModel.ICON_FILE_NAME)
+        self.append_column(icon_column)
+
+        text_renderer = gtk.CellRendererText()
+
+        description_column = gtk.TreeViewColumn()
+        description_column.pack_start(text_renderer)
+        description_column.add_attribute(text_renderer, 'markup',
+                                         UpdateListModel.DESCRIPTION)
+        self.append_column(description_column)
+
+    def __toggled_cb(self, cell_renderer, path):
+        row = self.props.model[path]
+        row[UpdateListModel.SELECTED] = not row[UpdateListModel.SELECTED]
+
+    def refresh(self):
+        pass
+
+
+class UpdateListModel(gtk.ListStore):
+
+    BUNDLE_ID = 0
+    SELECTED = 1
+    ICON_FILE_NAME = 2
+    DESCRIPTION = 3
+    SIZE = 4
+
+    def __init__(self, model):
+        gtk.ListStore.__init__(self, str, bool, str, str, int)
+
+        for bundle_update in model.updates:
+            row = [None] * 5
+            row[self.BUNDLE_ID] = bundle_update.bundle.get_bundle_id()
+            row[self.SELECTED] = True
+            row[self.ICON_FILE_NAME] = bundle_update.bundle.get_icon()
+
+            details = _('From version %(current)s to %(new)s (Size: %(size)s)')
+            details = details % \
+                    {'current': bundle_update.bundle.get_activity_version(),
+                     'new': bundle_update.version,
+                     'size': _format_size(bundle_update.size)}
+
+            row[self.DESCRIPTION] = '<b>%s</b>\n%s' % \
+                    (bundle_update.bundle.get_name(), details)
+
+            row[self.SIZE] = bundle_update.size
+
+            self.append(row)
+
+
+def _format_size(size):
+    """Convert a given size in bytes to a nicer better readable unit"""
+    if size == 0:
+        # TRANS: download size is 0
+        return _('None')
+    elif size < 1024:
+        # TRANS: download size of very small updates
+        return _('1 KB')
+    elif size < 1024 * 1024:
+        # TRANS: download size of small updates, e.g. '250 KB'
+        return locale.format_string(_('%.0f KB'), size / 1024.0)
+    else:
+        # TRANS: download size of updates, e.g. '2.3 MB'
+        return locale.format_string(_('%.1f MB'), size / 1024.0 / 1024)