WifiEnabler: add support to show supplicant state.

src/com/android/settings/wifi/Summary.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.wifi;
+
+import com.android.settings.R;
+
+import android.content.Context;
+import android.net.NetworkInfo.DetailedState;
+import android.text.TextUtils;
+
+class Summary {
+    static String get(Context context, String ssid, DetailedState state) {
+        String[] formats = context.getResources().getStringArray((ssid == null)
+                ? R.array.wifi_status : R.array.wifi_status_with_ssid);
+        int index = state.ordinal();
+
+        if (index >= formats.length || formats[index].length() == 0) {
+            return null;
+        }
+        return String.format(formats[index], ssid);
+    }
+
+    static String get(Context context, DetailedState state) {
+        return get(context, null, state);
+    }
+}