You are not logged in Log in Join
You are here: Home » Members » Phillip J. Eby's Zope Center » My Wikis » ZPatterns Wiki » PlugInKind
Log in
Name

Password

 
Link icon Forgot your password?
 
Print

History for PlugInKind

??changed:
-
Like a Zope 'meta_type', a plug-in kind is a string which describes a kind of Zope object.  Unlike a 'meta_type', plug-in kinds are used by more than one class of object.  You can think of a plug-in kind as a sort of meta-meta_type, which groups together a variety of similar meta-types by the collaboration interfaces they support.

For example, the string '"Attribute Provider"' is a plug-in kind used for AttributeProviders.  There can be many different classes whose instances act as AttributeProviders, but as long as their '__plugin_kind__' attribute is set to '"Attribute Provider"', they will be recognized by their PlugInContainers as AttributeProviders.

PlugInGroups display an "Add" list that only includes registered plug-ins of the correct plug-in kinds.  (PlugInGroups can support more than one !PlugInKind, even though PlugIns can each only *be* of one !PlugInKind.)

Since PlugInGroups are restricted to a specific set of plug-in kinds, PlugInContainers can be assured that the PlugIns in those groups support whatever collaboration interfaces are required by the container.
Copyright (c) 2011 Zope Foundation. All rights reserved. Legal | Contact
If you can read this text, it means you are not experiencing the Plone design at its best. Plone makes heavy use of CSS, which means it is accessible to any internet browser, but the design needs a standards-compliant browser to look like we intended it. Just so you know ;)