(refs #32)Separate Plugin interface and implementation

src/main/scala/plugin/JavaScriptPlugin.scala

@@ -0,0 +1,83 @@
+package plugin
+
+import org.mozilla.javascript.{Context => JsContext}
+import org.mozilla.javascript.{Function => JsFunction}
+import scala.collection.mutable.ListBuffer
+import plugin.PluginSystem.{Action, GlobalMenu, RepositoryMenu}
+
+class JavaScriptPlugin(val id: String, val author: String, val url: String, val description: String) extends Plugin {
+
+  private val repositoryMenuList   = ListBuffer[RepositoryMenu]()
+  private val globalMenuList       = ListBuffer[GlobalMenu]()
+  private val repositoryActionList = ListBuffer[Action]()
+  private val globalActionList     = ListBuffer[Action]()
+
+  def repositoryMenus   : List[RepositoryMenu] = repositoryMenuList.toList
+  def globalMenus       : List[GlobalMenu]     = globalMenuList.toList
+  def repositoryActions : List[Action]         = repositoryActionList.toList
+  def globalActions     : List[Action]         = globalActionList.toList
+
+  def addRepositoryMenu(label: String, name: String, url: String, icon: String, condition: JsFunction): Unit = {
+    repositoryMenuList += RepositoryMenu(label, name, url, icon, (context) => {
+      val context = JsContext.enter()
+      try {
+        condition.call(context, condition, condition, Array(context)).asInstanceOf[Boolean]
+      } finally {
+        JsContext.exit()
+      }
+    })
+  }
+
+  def addGlobalMenu(label: String, url: String, icon: String, condition: JsFunction): Unit = {
+    globalMenuList += GlobalMenu(label, url, icon, (context) => {
+      val context = JsContext.enter()
+      try {
+        condition.call(context, condition, condition, Array(context)).asInstanceOf[Boolean]
+      } finally {
+        JsContext.exit()
+      }
+    })
+  }
+
+  def addGlobalAction(path: String, function: JsFunction): Unit = {
+    globalActionList += Action(path, (request, response) => {
+      val context = JsContext.enter()
+      try {
+        function.call(context, function, function, Array(request, response))
+      } finally {
+        JsContext.exit()
+      }
+    })
+  }
+
+  def addRepositoryAction(path: String, function: JsFunction): Unit = {
+    repositoryActionList += Action(path, (request, response) => {
+      val context = JsContext.enter()
+      try {
+        function.call(context, function, function, Array(request, response))
+      } finally {
+        JsContext.exit()
+      }
+    })
+  }
+
+}
+
+object JavaScriptPlugin {
+
+  def define(id: String, author: String, url: String, description: String) = new JavaScriptPlugin(id, author, url, description)
+
+  def evaluateJavaScript(script: String): Any = {
+    val context = JsContext.enter()
+    try {
+      val scope = context.initStandardObjects()
+      scope.put("PluginSystem", scope, this)
+      scope.put("JavaScriptPlugin", scope, this)
+      val result = context.evaluateString(scope, script, "<cmd>", 1, null)
+      result
+    } finally {
+      JsContext.exit
+    }
+  }
+
+}