Move Plone portlets left and right between Products.ContentWellPortlets managers

configure.zcml

    <browser:page
          for="*"
          name="move_portlet"
          permission="cmf.ManagePortal"
          class=".views.MovePortlet"
          />

    <browser:page
        for="*"
        name="manage-portlets-macros"
        class="plone.app.portlets.browser.manage.ManageContextualPortlets"
        template="templates/edit-manager-macros.pt"
        permission="plone.app.portlets.ManageOwnPortlets"
        layer=".interfaces.IThemeSpecific"
        />

edit-manager-macros.pt

<div metal:define-macro="portlet-add-form" class="section" i18n:domain="plone">

    <form method="post" action="#"
          tal:define="portlets view/addable_portlets"
          tal:condition="portlets"
          tal:attributes="action view/context_url">
        <input type="hidden" name="referer" tal:attributes="value view/referer" />

        <label class="hiddenStructure"
               i18n:translate="label_add_portlet">
            Add portlet
        </label>

        <select name=":action" onchange="this.form.submit()">
            <option tal:attributes="value python:request['ACTUAL_URL'].replace(view.context_url(), '')"
                    i18n:translate="label_add_portlet_ellipsis">
                Add portlet&hellip;
            </option>
            <tal:options repeat="portlet portlets">
                <option tal:attributes="value string:${portlet/addview}"
                        tal:content="portlet/title"
                        i18n:translate="" />
            </tal:options>

        </select>

        <noscript>
            <input class="standalone"
                   type="submit"
                   value="Add portlet"
                   i18n:attributes="value label_add_portlet;"/>
        </noscript>

    </form>
</div>

<div metal:define-macro="current-portlets-list" class="portletAssignments"
    i18n:domain="plone">

    <h4 i18n:translate="heading_portlets_assigned_here">
        Portlets assigned here
    </h4>

    <div>
        <tal:block repeat="portlet view/portlets">
            <div tal:define="hiddenPortletClass python:not portlet['visible'] and 'blockedPortlet' or ''"
                tal:attributes="class string:managedPortlet portlet ${hiddenPortletClass};
                                data-portlethash portlet/hash;
                                data-viewname view/view_name;">
                <div class="portletHeader" tal:define="authenticator context/@@authenticator/authenticator">
                    <span class="managedPortletActions">

                      <!-- Up -->
                      <form class="portlet-action up" method="POST" tal:attributes="action portlet/up_url"
                          tal:condition="not:repeat/portlet/start">
                        <input type="hidden" name="referer" tal:attributes="value view/url_quote_referer" />
                        <input type="hidden" name="name" tal:attributes="value portlet/name" />
                        <input type="hidden" name="viewname" tal:attributes="value view/view_name" />
                        <span tal:replace="structure authenticator"/>
                        <button title="Move up" i18n:attributes="title" type="submit"
                          tal:attributes="name string:${portlet/name}-up">&#9650;</button>
                      </form>

                      <!-- Left -->
                      <form class="portlet-action left" method="POST" tal:attributes="action python:portlet['hide_url'].replace('@@toggle-visibility', 'move_portlet')">
                        <input type="hidden" name="direction" value="left" />
                        <input type="hidden" name="name" tal:attributes="value portlet/name" />
                        <input type="hidden" name="referer" tal:attributes="value view/url_quote_referer" />
                        <input type="hidden" name="viewname" tal:attributes="value view/view_name" />
                        <span tal:replace="structure authenticator"/>
                        <button title="Move left" i18n:attributes="title" type="submit"
                          tal:attributes="name string:${portlet/name}-left">&#9664;</button>
                      </form>

                      <!-- Right -->
                      <form class="portlet-action right" method="POST" tal:attributes="action python:portlet['hide_url'].replace('@@toggle-visibility', 'move_portlet')">
                        <input type="hidden" name="direction" value="right" />
                        <input type="hidden" name="name" tal:attributes="value portlet/name" />
                        <input type="hidden" name="referer" tal:attributes="value view/url_quote_referer" />
                        <input type="hidden" name="viewname" tal:attributes="value view/view_name" />
                        <span tal:replace="structure authenticator"/>
                        <button title="Move right" i18n:attributes="title" type="submit"
                          tal:attributes="name string:${portlet/name}-right">&#9654;</button>
                      </form>

                      <form class="portlet-action down" method="POST" tal:attributes="action portlet/down_url"
                          tal:condition="not:repeat/portlet/end">
                        <input type="hidden" name="referer" tal:attributes="value view/url_quote_referer" />
                        <input type="hidden" name="name" tal:attributes="value portlet/name" />
                        <input type="hidden" name="viewname" tal:attributes="value view/view_name" />
                        <span tal:replace="structure authenticator"/>
                        <button title="Move down" i18n:attributes="title" type="submit"
                          tal:attributes="name string:${portlet/name}-down">&#9660;</button>
                      </form>


                      <form class="portlet-action" method="POST" tal:attributes="action portlet/show_url"
                          tal:condition="not: portlet/visible">
                        <input type="hidden" name="referer" tal:attributes="value view/url_quote_referer" />
                        <input type="hidden" name="name" tal:attributes="value portlet/name" />
                        <input type="hidden" name="viewname" tal:attributes="value view/view_name" />
                        <span tal:replace="structure authenticator"/>
                        <button type="submit" i18n:translate="label_show_item"
                          tal:attributes="name string:${portlet/name}-show">Show</button>
                      </form>

                      <form class="portlet-action" method="POST" tal:attributes="action portlet/hide_url"
                          tal:condition="portlet/visible">
                        <input type="hidden" name="referer" tal:attributes="value view/url_quote_referer" />
                        <input type="hidden" name="name" tal:attributes="value portlet/name" />
                        <input type="hidden" name="viewname" tal:attributes="value view/view_name" />
                        <span tal:replace="structure authenticator"/>
                        <button type="submit" i18n:translate="label_hide_item"
                          tal:attributes="name string:${portlet/name}-hide">Hide</button>
                      </form>

                      <form class="portlet-action delete" method="POST" tal:attributes="action portlet/delete_url">
                        <input type="hidden" name="referer" tal:attributes="value view/url_quote_referer" />
                        <input type="hidden" name="name" tal:attributes="value portlet/name" />
                        <input type="hidden" name="viewname" tal:attributes="value view/view_name" />
                        <span tal:replace="structure authenticator"/>
                        <button i18n:attributes="title" title="Remove" type="submit"
                          tal:attributes="name string:${portlet/name}-remove">&times;</button>
                      </form>
                    </span>
 
                    <a tal:omit-tag="not:portlet/editview"
                       tal:attributes="href string:${portlet/editview}?referer=${view/url_quote_referer}"
                       tal:content="portlet/title" />
                </div>
            </div>
        </tal:block>
    </div>

</div>

views.py

"""Left and right portlets moving support for Products.ContentWellPortlets."""

import urllib

from Acquisition import aq_inner

from plone.portlets.interfaces import IPortletManager, IPortletAssignmentMapping

from zope.component import getMultiAdapter
from zope.component import getUtility


# Method: Gets the portlet assignment (behaves similar to a dict)
def getPortletAssignmentMapping(context, name):
    portlet_manager = getUtility(IPortletManager, name=name, context=context)
    return getMultiAdapter((context, portlet_manager), IPortletAssignmentMapping, context=context)


# http://stackoverflow.com/a/23816108/315168
def rfind(li, key):
    return max(loc for loc, val in enumerate(li) if val == key)


# The order we shuffle portlet around in different managers
# TODO: Now we implement this for one content wells section only
ORDER = [
    "ContentWellPortlets.BelowPortletManager6",
    "ContentWellPortlets.BelowPortletManager1",
    "ContentWellPortlets.BelowPortletManager2",
    "ContentWellPortlets.BelowPortletManager3",
    "ContentWellPortlets.BelowPortletManager4",
    "ContentWellPortlets.BelowPortletManager6",
    "ContentWellPortlets.BelowPortletManager1"]


class MovePortlet:
    """Move portlets between content wells left and right."""

    def __init__(self, context, request):
        # context is contentwellportlet managre
        self.context = context
        self.request = request

    def __call__(self):
        """ Shuffle a portlet to a chosen direction."""

        # '++contextportlets++ContentWellPortlets.BelowPortletManager1'
        manager_name = self.context.id[self.context.id.rfind("+") + 1:]
        # assignment_name = self.context.name()
        assignments = aq_inner(self.context)

        name = self.request.form["name"]
        original = assignments[name]

        if self.request.form["direction"] == "left":
            next_manager = ORDER[rfind(ORDER, manager_name) - 1]
        else:
            next_manager = ORDER[ORDER.index(manager_name) + 1]

        content_item = self.context.__parent__
        sideways_mappings = getPortletAssignmentMapping(content_item, next_manager)
        sideways_mappings[name] = original
        del assignments[name]

        referer = self.request.form["referer"]
        referer = urllib.unquote_plus(referer)
        self.request.response.redirect(referer)
        return ''