Add external dependency API.

An APN will not be connected to if some external dependency is not met.

bug:3486704
Change-Id: I7d94df343b260013efd11faa978deb13f07f1389

1 files changed, 12 insertions, 0 deletions

diff --git a/wifi/java/android/net/wifi/WifiStateTracker.java b/wifi/java/android/net/wifi/WifiStateTracker.java
index 07900ae..338cb4d 100644
--- a/wifi/java/android/net/wifi/WifiStateTracker.java
+++ b/wifi/java/android/net/wifi/WifiStateTracker.java
@@ -50,6 +50,7 @@ public class WifiStateTracker implements NetworkStateTracker {
     private LinkProperties mLinkProperties;
     private LinkCapabilities mLinkCapabilities;
     private NetworkInfo mNetworkInfo;
+    private NetworkInfo.State mLastState = NetworkInfo.State.UNKNOWN;
 
     /* For sending events to connectivity service handler */
     private Handler mCsHandler;
@@ -217,6 +218,14 @@ public class WifiStateTracker implements NetworkStateTracker {
                 if (mLinkCapabilities == null) {
                     mLinkCapabilities = new LinkCapabilities();
                 }
+                // don't want to send redundent state messages
+                // TODO can this be fixed in WifiStateMachine?
+                NetworkInfo.State state = mNetworkInfo.getState();
+                if (mLastState == state) {
+                    return;
+                } else {
+                    mLastState = state;
+                }
                 Message msg = mCsHandler.obtainMessage(EVENT_STATE_CHANGED, mNetworkInfo);
                 msg.sendToTarget();
             } else if (intent.getAction().equals(WifiManager.LINK_CONFIGURATION_CHANGED_ACTION)) {
@@ -228,4 +237,7 @@ public class WifiStateTracker implements NetworkStateTracker {
         }
     }
 
+    public void setDependencyMet(boolean met) {
+        // not supported on this network
+    }
 }