Introduction

plone.app.contentmenu contains the logic that powers Plone's content menu which is part of the toolbar.

It provides the menus items (and its submenues) for

• factories menu (order=10)
• workflows menu (order=20)
• actions menu (order=30)
• display menu (order=40)
• manage portlets menu (order=50)

Note that menu items are ordered by an 'ordered' property. To allow third party products to slot their own sub-menus in between the default menu items, these are registered with gaps.

Custom menus

Custom menus are registered in configure.zcml like so:

<!-- the main menu item -->
<adapter for="* *"
    name="plone.contentmenu.my_menu_item"
    factory=".menu.MyMainMenuItem"
    provides="plone.app.contentmenu.interfaces.IContentMenuItem" />

<!-- the sub menu items - name must match submenuId of MyMainMenuItem class -->
<browser:menu
    id="my_fancy_menu"
    title="The 'My' menu - allows to do new exciting stuff"
    class=".menu.MyMenu"
/>

in menu.py the class looks like so:

from zope.browsermenu.interfaces import IBrowserMenu
from zope.browsermenu.menu import BrowserMenu
from zope.browsermenu.menu import BrowserSubMenuItem
from zope.component import getMultiAdapter
from zope.i18nmessageid import MessageFactory
from zope.interface import implementer

_ = MessageFactory('my.fancy')


class IMyMainMenuItem(IBrowserMenu):
    """The main my menu item.

    You may want to place this in interfaces.py
    """


class IMyMenu(IBrowserMenu):
    """The my menu.

    You may want to place this in interfaces.py
    """


@implementer(IMyMainMenuItem)
class MyMainMenuItem(BrowserSubMenuItem):
    # This is in fact a submenu item of the parent menu, thus the name
    # of the inherited class tells it, don't be confused.

    title = _(u'label_my_menu', default=u'My')
    description = _(u'title_my_menu', default=u'My for the current content item')
    submenuId = 'my_fancy_menu'

    order = 70  # after the default menus
    extra = {
        'id': 'my-fancy-menu',
        'li_class': 'plonetoolbar-content-my-fancy'
    }

    @property
    def action(self):
        # return the url to be loaded if clicked on the link.
        # even if a submenu exists it will be active if javascript is disabled
        return self.context.absolute_url()

    def available(self):
        # check if the menu is available and shown or not
        return True

    def selected(self):
        # check if the menu should be shown as selected
        return False


@implementer(IMyMenu)
class MyMenu(BrowserMenu):

    def getMenuItems(self, context, request):
        """Return menu item entries in a TAL-friendly form."""
        results = []

        # here a single item is added. do what needed to add several entries
        results.append({
            'title': 'My item 1',
            'description': 'An my item',
            'action': '/url/to/action',
            'selected': False,
            'icon': 'some_icon_class',
            'extra': {
                'id': 'plone-contentmenu-my-fancy-one',
                'separator': None,
                'class': 'my-class pat-plone-modal',
                'modal': 'width: 400'
            },
            'submenu': None,
        })

        return results

Source Code

Contributors please read the document Process for Plone core's development

Sources are at the Plone code repository hosted at Github.