(refs #32)First impression of the plugin system

src/main/scala/plugin/PluginSystem.scala

@@ -0,0 +1,35 @@
+package plugin
+
+import app.Context
+
+/**
+ * Provides extension points to plug-ins.
+ */
+object PluginSystem {
+
+  private val repositoryMenuList = scala.collection.mutable.ListBuffer[Menu]()
+  private val globalMenuList = scala.collection.mutable.ListBuffer[Menu]()
+
+  case class Menu(label: String, url: String, icon: String, condition: Context => Boolean)
+
+  def addRepositoryMenu(label: String, url: String, icon: String = "")(condition: Context => Boolean): Unit = {
+    repositoryMenuList += Menu(label, url, icon, condition)
+  }
+
+  def addGlobalMenu(label: String, url: String, icon: String = "")(condition: Context => Boolean): Unit = {
+    globalMenuList += Menu(label, url, icon, condition)
+  }
+
+  def addAction(path: String): Unit = {
+    // TODO
+  }
+
+  def repositoryMenus: List[Menu] = repositoryMenuList.toList
+  def globalMenus: List[Menu] = globalMenuList.toList
+
+  // TODO This is a test
+  addGlobalMenu("Google", "http://www.google.co.jp/"){ context => context.loginAccount.isDefined }
+
+}
+
+