Add more material design (3)

src/main/scala/com/github/shadowsocks/utils/ConfigUtils.scala

@@ -198,14 +198,14 @@ object ConfigUtils {
   }
 
   def refresh(context: Context) {
-    val holder = context.getApplicationContext.asInstanceOf[ShadowsocksApplication].containerHolder
+    val holder = ShadowsocksApplication.containerHolder
     if (holder != null) holder.refresh()
   }
 
-  def getRejectList(context: Context, app: ShadowsocksApplication): String = {
+  def getRejectList(context: Context): String = {
     val default = context.getString(R.string.reject)
     try {
-      val container = app.containerHolder.getContainer
+      val container = ShadowsocksApplication.containerHolder.getContainer
       val update = container.getString("reject")
       if (update == null || update.isEmpty) default else update
     } catch {
@@ -213,10 +213,10 @@ object ConfigUtils {
     }
   }
 
-  def getBlackList(context: Context, app: ShadowsocksApplication): String = {
+  def getBlackList(context: Context): String = {
     val default = context.getString(R.string.black_list)
     try {
-      val container = app.containerHolder.getContainer
+      val container = ShadowsocksApplication.containerHolder.getContainer
       val update = container.getString("black_list")
       if (update == null || update.isEmpty) default else update
     } catch {

src/main/scala/com/github/shadowsocks/utils/Constants.scala

@@ -111,8 +111,6 @@ object State {
 object Action {
   val SERVICE = "com.github.shadowsocks.SERVICE"
   val CLOSE = "com.github.shadowsocks.CLOSE"
-  val UPDATE_FRAGMENT = "com.github.shadowsocks.ACTION_UPDATE_FRAGMENT"
-  val UPDATE_PREFS = "com.github.shadowsocks.ACTION_UPDATE_PREFS"
 }
 
 object Route {

src/main/scala/com/github/shadowsocks/utils/Utils.scala

@@ -92,6 +92,9 @@ object Utils {
     new String(Base64.encode(mdg.digest, 0))
   }
 
+  def dpToPx(context: Context, dp: Int): Int =
+    Math.round(dp * (context.getResources.getDisplayMetrics.xdpi / DisplayMetrics.DENSITY_DEFAULT))
+
   /*
      * round or floor depending on whether you are using offsets(floor) or
      * widths(round)