Improved documentaiton and internal callbacks.

README.md

@@ -78,7 +78,16 @@ The option disabled in the OptionPlist will disable the plugin at load time.
 
 Callbacks
 =========
+
+notation
+--------
+callbacks are noted as `<callback name>(arguments)` so `eplugin:init(Config)` means the callback `eplugin:init` is caled with 1 argument - `Config`.
+
+internal callbacks
+------------------
 eplugin provides the following callbacks itself:
-* eplugin:init - this is called when all modules are compiled. The Plugins config is passed.
-* eplugin:enable - this is called before a module gets enabled.  The Plugins config is passed.
-* eplugin:disable - this gets called after a module gets disabled. The Plugins config is passed.
+* eplugin:init(Config) - this is called when all modules are compiled.
+* eplugin:enable(Config) - this is called before a module gets enabled.
+* eplugin:disable(Config) - this gets called after a module gets disabled.
+* eplugin:enable_plugin(Plugin) - this gets called whenever a plugin is enabled.
+* eplugin:disable_plugin(Plugin) - this gets called whenever a plugin is disabled.

src/eplugin.erl

@@ -153,6 +153,7 @@ disable(Plugin) ->
             ets:match_delete(?TABLE, {'_', Plugin, '_', '_'}),
             {ok, Config} = config(Plugin),
             [erlang:apply(M, F, [Config]) || [M, F] <- Callback],
+            eplugin:apply('eplugin:disable_plugin', [Plugin]),
             ok;
         false ->
             lager:warning("[eplugin::~p] already disabled.", [Plugin])
@@ -176,6 +177,7 @@ enable(Plugin) ->
                                                         end, Callbacks)
                                   end, Modules),
                     [register_callbacks(Plugin, M) || M <- Modules],
+                    eplugin:apply('eplugin:enable_plugin', [Plugin]),
                     ok
             end
     end.