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However, this also means that
we are limited to only modifying those parts of the system that raise events.
Plugins represent the listener, and they can define either a listener class or a listener
function to handle specific events.
In this chapter, we will cover the following:
Setting up a Sandbox
Events
Listeners
Plugin Groups
Loading Plugins
Using Plugins as libraries (in lieu of library extensions)
Translating Plugins
Dealing with Plugin Settings (Parameters)
Packaging
File Naming Conflicts
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Plugin Design
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Setting Up a Sandbox
When we start building a new plugin it is imperative that we have a sandbox:
somewhere we can test our code. Ideally, we should have more than one system so
we can test our plugins on different server setups.
To set up a plugin sandbox we can create a basic installer. The XML displayed below
can be used to create a blank plugin called 'Foobar - My Extension'.

"http://dev.


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