add possibility to send versions by email (#4326)

src/pfwbged/policy/browser/configure.zcml

@@ -43,6 +43,13 @@
     permission="zope2.View"
     />
 
+  <browser:page
+    name="send_by_email"
+    for="collective.dms.basecontent.dmsfile.IDmsFile"
+    class=".send_by_email.SendMailView"
+    permission="zope2.View"
+    />
+
   <!-- Custom comments viewlet for IBaseTask -->
   <browser:viewlet
       name="plone.comments"

src/pfwbged/policy/browser/send_by_email.py

@@ -0,0 +1,106 @@
+# -*- encoding: utf-8 -*-
+
+import logging
+from datetime import datetime
+from email.mime.base import MIMEBase
+from email.mime.multipart import MIMEMultipart
+from email.mime.text import MIMEText
+from email import encoders
+
+from zope.interface import Interface
+from zope import schema
+from zope.component import createObject, queryUtility
+from z3c.form import form, button
+from z3c.form.field import Fields
+from z3c.form.interfaces import HIDDEN_MODE
+
+from Acquisition import aq_inner, aq_parent
+
+from plone.z3cform.layout import FormWrapper
+from Products.Five.browser import BrowserView
+from Products.CMFCore.utils import getToolByName
+
+from plone import api
+
+from .. import _
+
+class IMail(Interface):
+    recipients = schema.Text(title=_(u"Recipients"), required=True,
+            description=_(u"Email addresses of the recipients, one per line"))
+    subject = schema.TextLine(title=_(u"Subject"), required=True)
+    comment = schema.Text(
+        title=_(u"Comment"),
+        description=_(u"You can enter a note."),
+        required=False)
+
+
+class MailForm(form.AddForm):
+    fields = Fields(IMail)
+    next_url = None
+
+    def updateActions(self):
+        super(MailForm, self).updateActions()
+        self.actions["save"].addClass("context")
+        self.actions["cancel"].addClass("standalone")
+
+    def updateWidgets(self):
+        super(MailForm, self).updateWidgets()
+
+    @button.buttonAndHandler(_(u'Send'), name='save')
+    def handleAdd(self, action):
+        data, errors = self.extractData()
+        if errors:
+            self.status = self.formErrorsMessage
+            return
+        self._finishedAdd = True
+
+        subject = data['subject']
+        recipients = data['recipients'].splitlines()
+        comment = data.get('comment')
+
+        msg = MIMEMultipart()
+        msg['Subject'] = subject
+        msg['To'] = ', '.join(recipients)
+        msg['From'] = api.user.get_current().email or \
+                api.portal.get().getProperty('email_from_address') or \
+                'admin@localhost'
+
+        if comment:
+            msg.attach(MIMEText(comment, _charset='utf-8'))
+
+        ctype = self.context.file.contentType or 'application/octet-stream'
+        maintype, subtype = ctype.split('/', 1)
+        attachment = MIMEBase(maintype, subtype)
+        attachment.set_payload(self.context.file.data)
+        encoders.encode_base64(attachment)
+        if self.context.file.filename:
+            attachment.add_header('Content-Disposition', 'attachment',
+                    filename=self.context.file.filename)
+
+        msg.attach(attachment)
+
+        try:
+            self.context.MailHost.send(msg.as_string())
+        except Exception as e:
+            # do not abort transaction in case of email error
+            log = logging.getLogger('pfwbged.policy')
+            log.exception(e)
+            self.context.plone_utils.addPortalMessage(_('Error sending email'))
+
+        self.next_url = aq_parent(self.context).absolute_url()
+
+    @button.buttonAndHandler(_(u'Cancel'), name='cancel')
+    def handleCancel(self, action):
+        self._finishedAdd = True
+        self.next_url = aq_parent(self.context).absolute_url()
+
+    def nextURL(self):
+        return self.next_url
+
+
+class SendMailView(FormWrapper, BrowserView):
+    form = MailForm
+
+    def __init__(self, context, request):
+        BrowserView.__init__(self, context, request)
+        FormWrapper.__init__(self, context, request)

src/pfwbged/policy/menu.py

@@ -48,6 +48,7 @@ dmsfile_wfactions_mapping = {'ask_opinion': _(u"Ask opinion about version ${vers
                              'refuse': _(u"Refuse version ${version}"),
                              'finish': _(u"Finish version ${version}"),
                              'finish_without_validation': _(u"Validate and finish version ${version}"),
+                             'send_by_email': _(u"Send version ${version} by email"),
                              }
 
 
@@ -135,6 +136,18 @@ class CustomMenu(menu.WorkflowMenu):
             workflowActions.insert(idx, to_process_without_comment_action)
             to_process_action['title'] = _(u'To process (with comment)')
 
+        if IDmsFile.providedBy(context):
+            workflowActions.append(
+                    {'available': True,
+                     'visible': True,
+                     'allowed': True,
+                     'link_target': None,
+                     'id': 'send_by_email',
+                     'category': 'workflow',
+                     'title': 'Send by email',
+                     'url': context.absolute_url() + '/@@send_by_email',
+                     'icon': None})
+
         for action in workflowActions:
             if action['category'] != 'workflow':
                 continue
@@ -152,7 +165,7 @@ class CustomMenu(menu.WorkflowMenu):
             description = ''
 
             if action['id'] in ('submit', 'ask_opinion', 'attribute',
-                    'to_process', 'refuse'):
+                    'to_process', 'refuse', 'send_by_email'):
                 cssClass += " overlay-form-reload"
 
             transition = action.get('transition', None)
@@ -349,7 +362,9 @@ class CustomMenu(menu.WorkflowMenu):
             _editActions = ttool.listActionInfos(object=context,
                                                 category='object_buttons',
                                                 max=-1)
-            editActions = [action for action in _editActions if action['id'] != 'create_outgoing_mail' or (is_linked_to_an_incoming_mail(context) and not outgoingmail_created(context))]
+            editActions = [action for action in _editActions if
+                    action['id'] not in ('create_outgoing_mail', 'send_by_email') or (
+                    is_linked_to_an_incoming_mail(context) and not outgoingmail_created(context))]
 
         else:
             editActions = []