web/views/schemaentities.py
author Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
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"""Specific views for schema related entities
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:organization: Logilab
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:copyright: 2001-2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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"""
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__docformat__ = "restructuredtext en"
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from logilab.mtconverter import html_escape
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from cubicweb.selectors import implements, rql_condition
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from cubicweb.schemaviewer import SchemaViewer
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from cubicweb.common.uilib import ureport_as_html
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from cubicweb.common.view import EntityView
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from cubicweb.web.views import baseviews
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class ImageView(EntityView):
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    __select__ = implements('EEType')
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    id = 'image'
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    title = _('image')
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    def cell_call(self, row, col):
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        entity = self.entity(row, col)
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        url = entity.absolute_url(vid='eschemagraph')
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        self.w(u'<img src="%s" alt="%s"/>' % (
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            html_escape(url),
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            html_escape(self.req._('graphical schema for %s') % entity.name)))
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class _SchemaEntityPrimaryView(baseviews.PrimaryView):
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    show_attr_label = False
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    cache_max_age = 60*60*2 # stay in http cache for 2 hours by default 
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    def content_title(self, entity):
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        return html_escape(entity.dc_long_title())
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class EETypePrimaryView(_SchemaEntityPrimaryView):
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    __select__ = implements('EEType')
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    skip_attrs = _SchemaEntityPrimaryView.skip_attrs + ('name', 'meta', 'final')
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class ERTypePrimaryView(_SchemaEntityPrimaryView):
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    __select__ = implements('ERType')
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    skip_attrs = _SchemaEntityPrimaryView.skip_attrs + ('name', 'meta', 'final',
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                                                        'symetric', 'inlined')
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class ErdefPrimaryView(_SchemaEntityPrimaryView):
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    __select__ = implements('EEType', 'ENFRDef')
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    show_attr_label = True
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class EETypeSchemaView(EETypePrimaryView):
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    id = 'eschema'
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    title = _('in memory entity schema')
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    main_related_section = False
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    skip_rels = ('is', 'is_instance_of', 'identity', 'created_by', 'owned_by',
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                 'has_text',)
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    def render_entity_attributes(self, entity, siderelations):
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        super(EETypeSchemaView, self).render_entity_attributes(entity, siderelations)
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        eschema = self.vreg.schema.eschema(entity.name)
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        viewer = SchemaViewer(self.req)
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        layout = viewer.visit_entityschema(eschema, skiprels=self.skip_rels)
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        self.w(ureport_as_html(layout))
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        if not eschema.is_final():
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            self.w(u'<img src="%s" alt="%s"/>' % (
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                html_escape(entity.absolute_url(vid='eschemagraph')),
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                html_escape(self.req._('graphical schema for %s') % entity.name)))
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class ERTypeSchemaView(ERTypePrimaryView):
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    id = 'eschema'
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    title = _('in memory relation schema')
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    main_related_section = False
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    def render_entity_attributes(self, entity, siderelations):
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        super(ERTypeSchemaView, self).render_entity_attributes(entity, siderelations)
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        rschema = self.vreg.schema.rschema(entity.name)
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        viewer = SchemaViewer(self.req)
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        layout = viewer.visit_relationschema(rschema)
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        self.w(ureport_as_html(layout))
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        if not rschema.is_final():
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            self.w(u'<img src="%s" alt="%s"/>' % (
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                html_escape(entity.absolute_url(vid='eschemagraph')),
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                html_escape(self.req._('graphical schema for %s') % entity.name)))
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class EETypeWorkflowView(EntityView):
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    id = 'workflow'
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    __select__ = implements('EEType')
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    cache_max_age = 60*60*2 # stay in http cache for 2 hours by default 
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    def cell_call(self, row, col, **kwargs):
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        entity = self.entity(row, col)
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        self.w(u'<h1>%s</h1>' % (self.req._('workflow for %s')
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                                 % display_name(self.req, entity.name)))
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        self.w(u'<img src="%s" alt="%s"/>' % (
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            html_escape(entity.absolute_url(vid='ewfgraph')),
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            html_escape(self.req._('graphical workflow for %s') % entity.name)))
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class EETypeOneLineView(baseviews.OneLineView):
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    __select__ = implements('EEType')
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    def cell_call(self, row, col, **kwargs):
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        entity = self.entity(row, col)
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        final = entity.final
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        if final:
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            self.w(u'<em class="finalentity">')
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        super(EETypeOneLineView, self).cell_call(row, col, **kwargs)
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        if final:
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            self.w(u'</em>')
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from cubicweb.web.action import Action
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class ViewWorkflowAction(Action):
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    id = 'workflow'
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    __select__ = implements('EEType') & rql_condition('S state_of X')
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    category = 'mainactions'
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    title = _('view workflow')
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    def url(self):
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        entity = self.rset.get_entity(self.row or 0, self.col or 0)
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        return entity.absolute_url(vid='workflow')
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