web/views/iprogress.py
author Alexandre Fayolle <alexandre.fayolle@logilab.fr>
Wed, 07 Apr 2010 11:56:30 +0200
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"""Specific views for entities implementing IProgress
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:organization: Logilab
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:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
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"""
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__docformat__ = "restructuredtext en"
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_ = unicode
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from math import floor
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from logilab.mtconverter import xml_escape
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from cubicweb.utils import make_uid
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from cubicweb.selectors import implements
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from cubicweb.interfaces import IProgress, IMileStone
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from cubicweb.schema import display_name
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from cubicweb.view import EntityView
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class ProgressTableView(EntityView):
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    """The progress table view is able to display progress information
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    of any object implement IMileStone.
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    The default layout is composoed of 7 columns : parent task,
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    milestone, state, estimated date, cost, progressbar, and todo_by
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    The view accepts an optional ``columns`` paramater that lets you
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    remove or reorder some of those columns.
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    To add new columns, you should extend this class, define a new
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    ``columns`` class attribute and implement corresponding
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    build_COLNAME_cell methods
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    header_for_COLNAME methods allow to customize header's label
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    """
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    __regid__ = 'progress_table_view'
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    title = _('task progression')
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    __select__ = implements(IMileStone)
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    # default columns of the table
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    columns = (_('project'), _('milestone'), _('state'), _('eta_date'),
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               _('cost'), _('progress'), _('todo_by'))
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    def call(self, columns=None):
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        """displays all versions in a table"""
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        self._cw.add_css('cubicweb.iprogress.css')
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        _ = self._cw._
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        self.columns = columns or self.columns
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        ecls = self._cw.vreg['etypes'].etype_class(self.cw_rset.description[0][0])
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        self.w(u'<table class="progress">')
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        self.table_header(ecls)
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        self.w(u'<tbody>')
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        for row in xrange(self.cw_rset.rowcount):
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            self.cell_call(row=row, col=0)
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        self.w(u'</tbody>')
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        self.w(u'</table>')
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    def cell_call(self, row, col):
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        _ = self._cw._
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        entity = self.cw_rset.get_entity(row, col)
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        infos = {}
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        for col in self.columns:
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            meth = getattr(self, 'build_%s_cell' % col, None)
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            # find the build method or try to find matching attribute
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            if meth:
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                content = meth(entity)
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            else:
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                content = entity.printable_value(col)
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            infos[col] = content
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        if hasattr(entity, 'progress_class'):
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            cssclass = entity.progress_class()
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        else:
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            cssclass = u''
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        self.w(u"""<tr class="%s" onmouseover="addElementClass(this, 'highlighted');"
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            onmouseout="removeElementClass(this, 'highlighted')">""" % cssclass)
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        line = u''.join(u'<td>%%(%s)s</td>' % col for col in self.columns)
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        self.w(line % infos)
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        self.w(u'</tr>\n')
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    ## header management ######################################################
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    def header_for_project(self, ecls):
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        """use entity's parent type as label"""
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        return display_name(self._cw, ecls.parent_type)
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    def header_for_milestone(self, ecls):
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        """use entity's type as label"""
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        return display_name(self._cw, ecls.__regid__)
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    def table_header(self, ecls):
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        """builds the table's header"""
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        self.w(u'<thead><tr>')
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        _ = self._cw._
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        for column in self.columns:
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            meth = getattr(self, 'header_for_%s' % column, None)
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            if meth:
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                colname = meth(ecls)
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            else:
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                colname = _(column)
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            self.w(u'<th>%s</th>' % xml_escape(colname))
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        self.w(u'</tr></thead>\n')
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    ## cell management ########################################################
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    def build_project_cell(self, entity):
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        """``project`` column cell renderer"""
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        project = entity.get_main_task()
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        if project:
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            return project.view('incontext')
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        return self._cw._('no related project')
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    def build_milestone_cell(self, entity):
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        """``milestone`` column cell renderer"""
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        return entity.view('incontext')
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    def build_state_cell(self, entity):
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        """``state`` column cell renderer"""
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        return xml_escape(self._cw._(entity.state))
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    def build_eta_date_cell(self, entity):
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        """``eta_date`` column cell renderer"""
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        if entity.finished():
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            return self._cw.format_date(entity.completion_date())
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        formated_date = self._cw.format_date(entity.initial_prevision_date())
0
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        if entity.in_progress():
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            eta_date = self._cw.format_date(entity.eta_date())
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            _ = self._cw._
0
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            if formated_date:
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                formated_date += u' (%s %s)' % (_('expected:'), eta_date)
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            else:
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                formated_date = u'%s %s' % (_('expected:'), eta_date)
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        return formated_date
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0
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    def build_todo_by_cell(self, entity):
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        """``todo_by`` column cell renderer"""
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        return u', '.join(p.view('outofcontext') for p in entity.contractors())
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    def build_cost_cell(self, entity):
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        """``cost`` column cell renderer"""
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        _ = self._cw._
0
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        pinfo = entity.progress_info()
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        totalcost = pinfo.get('estimatedcorrected', pinfo['estimated'])
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        missing = pinfo.get('notestimatedcorrected', pinfo.get('notestimated', 0))
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        costdescr = []
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        if missing:
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            # XXX: link to unestimated entities
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            costdescr.append(_('%s not estimated') % missing)
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        estimated = pinfo['estimated']
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        if estimated and estimated != totalcost:
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            costdescr.append(_('initial estimation %s') % estimated)
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        if costdescr:
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            return u'%s (%s)' % (totalcost, ', '.join(costdescr))
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        return unicode(totalcost)
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0
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    def build_progress_cell(self, entity):
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        """``progress`` column cell renderer"""
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        return entity.view('progressbar')
0
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class InContextProgressTableView(ProgressTableView):
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    """this views redirects to ``progress_table_view`` but removes
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    the ``project`` column
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    """
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    __regid__ = 'ic_progress_table_view'
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    def call(self, columns=None):
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        view = self._cw.vreg['views'].select('progress_table_view', self._cw,
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                                         rset=self.cw_rset)
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        columns = list(columns or view.columns)
0
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        try:
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            columns.remove('project')
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        except ValueError:
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            self.info('[ic_progress_table_view] could not remove project from columns')
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        view.render(w=self.w, columns=columns)
0
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class ProgressBarView(EntityView):
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    """displays a progress bar"""
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    __regid__ = 'progressbar'
0
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    title = _('progress bar')
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    __select__ = implements(IProgress)
0
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    precision = 0.1
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    red_threshold = 1.1
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    orange_threshold = 1.05
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    yellow_threshold = 1
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    @classmethod
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    def overrun(cls, entity):
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        """overrun = done + todo - """
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        if entity.done + entity.todo > entity.revised_cost:
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            overrun = entity.done + entity.todo - entity.revised_cost
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        else:
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            overrun = 0
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        if overrun < cls.precision:
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            overrun = 0
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        return overrun
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    @classmethod
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    def overrun_percentage(cls, entity):
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        """pourcentage overrun = overrun / budget"""
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        if entity.revised_cost == 0:
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            return 0
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        else:
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            return cls.overrun(entity) * 100. / entity.revised_cost
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0
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    def cell_call(self, row, col):
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        self._cw.add_css('cubicweb.iprogress.css')
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        self._cw.add_js('cubicweb.iprogress.js')
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        entity = self.cw_rset.get_entity(row, col)
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        done = entity.done
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        todo = entity.todo
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        budget = entity.revised_cost
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        if budget == 0:
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            pourcent = 100
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        else:
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            pourcent = done*100./budget
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        if pourcent > 100.1:
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            color = 'red'
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        elif todo+done > self.red_threshold*budget:
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            color = 'red'
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        elif todo+done > self.orange_threshold*budget:
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            color = 'orange'
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        elif todo+done > self.yellow_threshold*budget:
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            color = 'yellow'
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        else:
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            color = 'green'
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        if pourcent < 0:
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            pourcent = 0
0
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        if floor(done) == done or done>100:
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            done_str = '%i' % done
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        else:
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            done_str = '%.1f' % done
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        if floor(budget) == budget or budget>100:
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            budget_str = '%i' % budget
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        else:
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            budget_str = '%.1f' % budget
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        title = u'%s/%s = %i%%' % (done_str, budget_str, pourcent)
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        short_title = title
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        if self.overrun_percentage(entity):
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            title += u' overrun +%sj (+%i%%)' % (self.overrun(entity),
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                                                 self.overrun_percentage(entity))
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            overrun = self.overrun(entity)
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            if floor(overrun) == overrun or overrun>100:
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                overrun_str = '%i' % overrun
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            else:
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                overrun_str = '%.1f' % overrun
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            short_title += u' +%s' % overrun_str
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        # write bars
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        maxi = max(done+todo, budget)
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        if maxi == 0:
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            maxi = 1
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        cid = make_uid('progress_bar')
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        self._cw.html_headers.add_onload('draw_progressbar("canvas%s", %i, %i, %i, "%s");' %
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                                         (cid,
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                                          int(100.*done/maxi), int(100.*(done+todo)/maxi),
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                                          int(100.*budget/maxi), color))
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        self.w(u'%s<br/>'
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               u'<canvas class="progressbar" id="canvas%s" width="100" height="10"></canvas>'
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               % (short_title.replace(' ','&nbsp;'), cid))