Show dialog when user tries to edit a locked down WiFi config

Also, 'FORGET' button is not shown on WifiDialogs of locked down configs.
Context menu only shows 'Connect' for them.

Bug: 20117316
Change-Id: I3fa986c10b6ff47d1a897794213c225c8c6f579b

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

@@ -37,11 +37,14 @@ class WifiDialog extends AlertDialog implements WifiConfigUiBase {
     private View mView;
     private WifiConfigController mController;
     private boolean mHideSubmitButton;
+    private boolean mHideForgetButton;
 
     public WifiDialog(Context context, DialogInterface.OnClickListener listener,
-            AccessPoint accessPoint, boolean edit, boolean hideSubmitButton) {
+            AccessPoint accessPoint, boolean edit, boolean hideSubmitButton,
+            boolean hideForgetButton) {
         this(context, listener, accessPoint, edit);
         mHideSubmitButton = hideSubmitButton;
+        mHideForgetButton = hideForgetButton;
     }
 
     public WifiDialog(Context context, DialogInterface.OnClickListener listener,
@@ -51,6 +54,7 @@ class WifiDialog extends AlertDialog implements WifiConfigUiBase {
         mListener = listener;
         mAccessPoint = accessPoint;
         mHideSubmitButton = false;
+        mHideForgetButton = false;
     }
 
     @Override
@@ -73,6 +77,10 @@ class WifiDialog extends AlertDialog implements WifiConfigUiBase {
              * visibility. Right after creation, update button visibility */
             mController.enableSubmitIfAppropriate();
         }
+
+        if (mHideForgetButton) {
+            mController.hideForgetButton();
+        }
     }
 
     public void onRestoreInstanceState(Bundle savedInstanceState) {