org.nlogo.workspace

Components manages components which are dynamically registered with the Workspace

At the moment, it just holds and returns those components. Perhaps in the future we could have a more advanced component lifecycle where components could be initialized, disposed, and made aware of workspace events (like ticks)

Interface provides access to the NetLogo controlling API's report and command methods found in methods independent of App.app and headless.HeadlessWorkspace. This is useful for making java software that can run NetLogo in both GUI and Headless mode.

Some simple notes on loading and unloading extensions:

• The load method is called when an extension appears in the extensions block when it wasn't there in the last compilation
• The unload method is called when an extension is removed from the extensions block

ExtensionManager lifecycle call chart. In [square brackets] are methods called on the extension manager. In {curly braces} are the methods called on the class manager of the extension. Conditions are specified in (parens)

[startFullCompilation] // called by compiler | | (no exts) (ext foo) | | | v | [importExtension(foo)] // called by compiler | | | | (foo loaded) (foo not loaded) | | | | v v | {unload} {runOnce} | | | | v v | +-----{load} | | | // return control to compiler |(foo:bar not used) (foo:bar used) | | | | | v | | [replaceIdentifer(foo:bar)] // foo added to live set | | | | | | v v v [finishFullCompilation] | | | (no ext) (foo live) (foo not live) | | | --- --- v {unload} | ---

This trait holds the state of the workspace with respect to various facets related to (but external from) the model. These include:

• the model path
• the model file name
• the model type (new, library, "normal")

At some point in the future this trait could be modified to hold the model itself. At the moment, that bit of state is handled by ModelSaver, but only because nothing in the workspace needs it directly. RG 5/12/16