Nexus: Clean up supplicant events, protocol, and continue plumbing

    - Create SupplicantEvent classes for events
    - New SupplicantEventFactory for creating events
    - Extract Controller -> NetworkManager callbacks into IControllerHandler
    - Move ScanResult handling from Supplicant -> WifiController
    - Plumb more 'onConnected()' code
    - Instead of re-creating NetworkList every-time, merge in
      new entries
    - Extract SupplicantListener -> Supplicant callbacks into
      ISupplicantEventHandler
    - Move SupplicantListener callback handling to WifiController
    - Add unlocked version of lookupNetwork()
    - Save supplicant config after setting a WifiNetwork variable
    - Move property registration from WifiNetwork -> Supplicant
    - Change wifi enable broadcast messages
    - Add 3 new events: 'onAssociating', 'onAssociated', 'onConnectionTimeout'
    - Add support for handling KeyManagement

Signed-off-by: San Mehat <san@google.com>
diff --git a/nexus/SupplicantStateChangeEvent.cpp b/nexus/SupplicantStateChangeEvent.cpp
new file mode 100644
index 0000000..cf0b9da
--- /dev/null
+++ b/nexus/SupplicantStateChangeEvent.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2008 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.
+ */
+
+#include <stdlib.h>
+
+#define LOG_TAG "SupplicantStateChangeEvent"
+#include <cutils/log.h>
+
+#include "SupplicantStateChangeEvent.h"
+
+SupplicantStateChangeEvent::SupplicantStateChangeEvent(int level, char *event,
+                                                       size_t len) :
+                            SupplicantEvent(SupplicantEvent::EVENT_STATE_CHANGE,
+                                            level) {
+    // XXX: move this stuff into a static creation method
+    char *p = index(event, ' ');
+    if (!p) {
+        LOGW("Bad event '%s'\n", event);
+        return;
+    }
+
+    mState = atoi(p + strlen("state=") + 1);
+}
+
+SupplicantStateChangeEvent::SupplicantStateChangeEvent(int state) :
+                            SupplicantEvent(SupplicantEvent::EVENT_STATE_CHANGE, -1) {
+    mState = state;
+}
+
+SupplicantStateChangeEvent::~SupplicantStateChangeEvent() {
+}
+