add roster portlet

src/ploneintranet/workspace/browser/configure.zcml

@@ -8,25 +8,36 @@
     xmlns:plone="http://namespaces.plone.org/plone"
     i18n_domain="ploneintranet.workspace">
 
+  <include package="plone.app.portlets" />
+
+  <browser:page
+      name="policies"
+      for="ploneintranet.workspace.workspacefolder.IWorkspaceFolder"
+      class=".forms.PolicyForm"
+      permission="cmf.ModifyPortalContent"
+      />
+
   <browser:page
-     name="policies"
-     for="ploneintranet.workspace.workspacefolder.IWorkspaceFolder"
-     class=".forms.PolicyForm"
-     permission="cmf.ModifyPortalContent"
-     />
+      name="transfer"
+      for="ploneintranet.workspace.workspacefolder.IWorkspaceFolder"
+      class=".forms.TransferMembershipForm"
+      permission="cmf.ModifyPortalContent"
+      />
 
-   <browser:page
-     name="transfer"
-     for="ploneintranet.workspace.workspacefolder.IWorkspaceFolder"
-     class=".forms.TransferMembershipForm"
-     permission="cmf.ModifyPortalContent"
-     />
+  <browser:page
+      name="invite"
+      for="ploneintranet.workspace.workspacefolder.IWorkspaceFolder"
+      class=".forms.InviteForm"
+      permission="cmf.ModifyPortalContent"
+      />
 
-   <browser:page
-     name="invite"
-     for="ploneintranet.workspace.workspacefolder.IWorkspaceFolder"
-     class=".forms.InviteForm"
-     permission="cmf.ModifyPortalContent"
-     />
+  <plone:portlet
+      name="portlets.RosterPortlet"
+      interface=".portlets.IRosterPortlet"
+      assignment=".portlets.Assignment"
+      renderer=".portlets.Renderer"
+      addview=".portlets.AddForm"
+      editview=".portlets.EditForm"
+      />
 
 </configure>

src/ploneintranet/workspace/browser/portlets.py

@@ -0,0 +1,52 @@
+from Products.Five.browser.pagetemplatefile import ViewPageTemplateFile
+from plone.app.portlets.portlets import base
+from plone.portlets.interfaces import IPortletDataProvider
+from zope.formlib.form import Fields
+from zope.interface import implements
+
+
+class IRosterPortlet(IPortletDataProvider):
+    """
+    Provides a button to participants which links to the roster view
+    """
+
+
+class Assignment(base.Assignment):
+
+    implements(IRosterPortlet)
+
+    @property
+    def title(self):
+        return u"Roster"
+
+
+class Renderer(base.Renderer):
+
+    render = ViewPageTemplateFile("templates/roster_portlet.pt")
+
+    @property
+    def available(self):
+        return True
+
+    def on_workspace(self):
+        """
+        are we within a workspace?
+        """
+        return getattr(self.context, 'acquire_workspace', None) is not None
+
+
+class AddForm(base.AddForm):
+
+    form_fields = Fields(IRosterPortlet)
+    label = u"Add roster portlet"
+    description = "This portlet gives participants access to the roster view"
+
+    def create(self, data):
+        return Assignment()
+
+
+class EditForm(base.EditForm):
+
+    form_fields = Fields(IRosterPortlet)
+    label = "Edit roster portlet"
+    description = "This portlet gives participants access to the roster view"

src/ploneintranet/workspace/browser/templates/roster_portlet.pt

@@ -0,0 +1,12 @@
+<dl class="portlet portletAnnualSubscription">
+  <dt class="portletHeader">
+    <a href=""
+       tal:attributes="href string:${context/absolute_url}/@@edit-roster"
+       tal:condition="view/on_workspace">
+      Roster
+    </a>
+    <p tal:condition="not:view/on_workspace">
+      The roster view is not available outside of a workspace.
+    </p>
+  </dt>
+</dl>

src/ploneintranet/workspace/profiles/default/portlets.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0"?>
+<portlets
+    xmlns:i18n="http://xml.zope.org/namespaces/i18n"
+    i18n:domain="plone">
+
+  <portlet
+      addview="portlets.RosterPortlet"
+      title="Roster"
+      description="Give participants access to the roster view">
+    <for interface="plone.app.portlets.interfaces.IColumn" />
+  </portlet>
+  <assignment
+      type="portlets.RosterPortlet"
+      manager="plone.rightcolumn"
+      category="content_type"
+      key="ploneintranet.workspace.workspacefolder"
+      name="portlets.RosterPortlet"
+      insert-before="*"
+      >
+  </assignment>
+
+</portlets>