z3c.menu.simple 0.5.1

A simple menu system for Zope3

This package provides a simple menu implementation based on viewlets.

Detailed Documentation

Simple Menu

The z3c.menu.simple package provides a simple menu implementation which allows you to implement simply menus based on content providers and viewlets.

Right now there are some SimpleMenuItem menu item implementations and a tabbed menu with tab/tab-item and action/action-item located in this package.

Let’s see what this means.

ContextMenu

>>> from zope.viewlet.interfaces import IViewlet
>>> from zope.viewlet.interfaces import IViewletManager

Let’s create a menu which means we define a viewlet manager interface:

>>> class IMenu(IViewletManager):
...     """Menu viewlet manager."""

You can then create a viewlet manager using this interface now:

>>> from zope.viewlet import manager
>>> Menu = manager.ViewletManager('left', IMenu)

Now we have to define a context:

>>> import zope.interface
>>> from zope.app.container import contained
>>> from zope.app.container.interfaces import IContained
>>> class Content(contained.Contained):
...     zope.interface.implements(IContained)
>>> root['content'] = Content()
>>> content = root['content']

>>> from zope.publisher.browser import TestRequest
>>> request = TestRequest()

>>> from zope.publisher.interfaces.browser import IBrowserView
>>> class View(contained.Contained):
...     zope.interface.implements(IBrowserView)
...     def __init__(self, context, request):
...         self.__parent__ = context
...         self.context = context
...         self.request = request
>>> view = View(content, request)

>>> menu = Menu(content, request, view)

So initially no menu get rendered:

>>> menu.update()
>>> menu.render()
u''

But now we register a context menu item for the IMenu:

>>> import zope.component
>>> from zope.publisher.interfaces.browser import IDefaultBrowserLayer

>>> from z3c.menu.simple.menu import ContextMenuItem
>>> class MyLocalLink(ContextMenuItem):
...
...     __name__ = u'MyLocalLink'
...     urlEndings = 'myLocal.html'
...     viewURL = 'myLocal.html'

>>> # Create a security checker for viewlets.
>>> from zope.security.checker import NamesChecker, defineChecker
>>> viewletChecker = NamesChecker(('update', 'render'))
>>> defineChecker(MyLocalLink, viewletChecker)

>>> zope.component.provideAdapter(
...     MyLocalLink,
...     (zope.interface.Interface, IDefaultBrowserLayer,
...     IBrowserView, IMenu),
...     IViewlet, name='MyLocalLink')

Now see what we get if the IMenu viewlet manager get used:

>>> menu.update()
>>> print menu.render()
<a href="http://127.0.0.1/content/myLocal.html"
   class="inactive-menu-item">MyLocalLink</a>

GlobalMenu

>>> from z3c.menu.simple.menu import GlobalMenuItem
>>> class MyGlobalLink(GlobalMenuItem):
...
...     __name__ = u'MyGlobalLink'
...     urlEndings = 'myGlobal.html'
...     viewURL = 'myGlobal.html'

>>> defineChecker(MyGlobalLink, viewletChecker)

>>> zope.component.provideAdapter(
...     MyGlobalLink,
...     (zope.interface.Interface, IDefaultBrowserLayer,
...     IBrowserView, IMenu),
...     IViewlet, name='MyGlobalLink')

Now see what we get if the IMenu viewlet manager get used:

>>> menu.update()
>>> print menu.render()
<a href="http://127.0.0.1/myGlobal.html"
   class="inactive-menu-item">MyGlobalLink</a>
<a href="http://127.0.0.1/content/myLocal.html"
   class="inactive-menu-item">MyLocalLink</a>

TabbedMenu

Now we create a tabbed menu called MasterMenu:

>>> class IMasterMenu(IViewletManager):
...     """Master menu viewlet manager."""

Let’s create a viewlet manager using this interface and the TabMenu as base class:

>>> from z3c.menu.simple.menu import TabMenu
>>> MasterMenu = manager.ViewletManager('masterMenu', IMasterMenu,
...                                     bases=(TabMenu,))

We use the same context, request and view like before:

>>> masterMenu = MasterMenu(content, request, view)

So initially no menu get rendered:

>>> masterMenu.update()
>>> masterMenu.render()
u''

Now we register a menu tab which is also a viewlet manager:

>>> from zope.app.pagetemplate import viewpagetemplatefile
>>> from z3c.menu.simple import ITab
>>> from z3c.menu.simple.menu import Tab
>>> class MyTabs(Tab):
...     template = viewpagetemplatefile.ViewPageTemplateFile('tab.pt')
>>> myTabs = MyTabs(content, request, view)

Also here, initially no tab get rendered:

>>> myTabs.update()
>>> myTabs.render()
u''

Now we register a menu action which is also a viewlet manager:

>>> from z3c.menu.simple import IAction
>>> from z3c.menu.simple.menu import Action
>>> class MyActions(Action):
...     template = viewpagetemplatefile.ViewPageTemplateFile('action.pt')
>>> myActions = MyActions(content, request, view)

Also here, initially no tab get rendered:

>>> myActions.update()
>>> myActions.render()
u''

After setup the TabMenu, Tab and Action viewlet managers, we start to register a tab menu item:

>>> from z3c.menu.simple.menu import TabItem
>>> class MyTab(TabItem):
...
...     __name__ = u'MyTab'
...     url = 'myTab.html'
...     selectedViewNames = ['myTab.html']

>>> tabChecker = NamesChecker(('update', 'render', 'css', 'selected'))
>>> defineChecker(MyTab, tabChecker)

>>> zope.component.provideAdapter(
...     MyTab,
...     (zope.interface.Interface, IDefaultBrowserLayer,
...     IBrowserView, ITab),
...     IViewlet, name='MyTab')

Now see what we get if the tab viewlet manager get rendered:

>>> myTabs.update()
>>> print myTabs.render()
<div class="tabMenu">
  <span class="inactive-menu-item">
  <a href="myTab.html">MyTab</a>
</span>
</div>

After showing how a tab menu item get used, we will register a menu action item.

>>> from z3c.menu.simple.menu import ActionItem
>>> class MyAction(ActionItem):
...
...     __name__ = u'MyAction'
...     title = 'myAction'

>>> actionChecker = NamesChecker(('update', 'render', 'title'))
>>> defineChecker(MyAction, actionChecker)

>>> zope.component.provideAdapter(
...     MyAction,
...     (zope.interface.Interface, IDefaultBrowserLayer,
...     IBrowserView, IAction),
...     IViewlet, name='MyAction')

Now see what we get if the action viewlet manager get used:

>>> myActions.update()
>>> print myActions.render()
<div class="actionMenuWrapper">
  <ul class="actionMenu">
    <li class="inactive-menu-item">
      <a href="">
        <div>myAction</div>
      </a>
    </li>
  </ul>
</div>
<div class="clearActionMenu" />

CHANGES

0.5.1dev (unreleased)

• Bug: Updated meta-data and documentation.

0.5.0 (2008-01-21)

• Initial Release