Retrying sending proxy changes to webkit

Now checking if the ProxyProperties object is null, and if the
string returned by getHost() is null.

Change-Id: I727e26c2a41fe057501c3b610ba6fa221d16da45

core/java/android/webkit/JWebCoreJavaBridge.java

@@ -307,4 +307,5 @@ final class JWebCoreJavaBridge extends Handler {
     public native void addPackageNames(Set<String> packageNames);
     public native void addPackageName(String packageName);
     public native void removePackageName(String packageName);
+    public native void updateProxy(String newProxy);
 }

core/java/android/webkit/WebView.java

@@ -48,6 +48,8 @@ import android.graphics.RectF;
 import android.graphics.Region;
 import android.graphics.Shader;
 import android.graphics.drawable.Drawable;
+import android.net.Proxy;
+import android.net.ProxyProperties;
 import android.net.Uri;
 import android.net.http.SslCertificate;
 import android.os.AsyncTask;
@@ -981,6 +983,7 @@ public class WebView extends AbsoluteLayout
          */
         init();
         setupPackageListener(context);
+        setupProxyListener(context);
         updateMultiTouchSupport(context);
 
         if (privateBrowsing) {
@@ -990,6 +993,43 @@ public class WebView extends AbsoluteLayout
         mAutoFillData = new WebViewCore.AutoFillData();
     }
 
+    private static class ProxyReceiver extends BroadcastReceiver {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) {
+                handleProxyBroadcast(intent);
+            }
+        }
+    }
+
+    private static void setupProxyListener(Context context) {
+        IntentFilter filter = new IntentFilter();
+        filter.addAction(Proxy.PROXY_CHANGE_ACTION);
+        Intent currentProxy = context.registerReceiver(new ProxyReceiver(), filter);
+        if (currentProxy != null) {
+            handleProxyBroadcast(currentProxy);
+        }
+    }
+
+    private static void handleProxyBroadcast(Intent intent) {
+        ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO);
+        if (proxyProperties == null || proxyProperties.getHost() == null) {
+            WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, "");
+            return;
+        }
+
+        String host = proxyProperties.getHost();
+        int port = proxyProperties.getPort();
+        if (port != 0)
+            host += ": " + port;
+
+        // TODO: Handle exclusion list
+        // The plan is to make an AndroidProxyResolver, and handle the blacklist
+        // there
+        String exclusionList = proxyProperties.getExclusionList();
+        WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host);
+    }
+
     /*
      * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED
      * or ACTION_PACKAGE_REMOVED.

core/java/android/webkit/WebViewCore.java

@@ -684,6 +684,14 @@ final class WebViewCore {
                                 }
                                 BrowserFrame.sJavaBridge.removePackageName((String) msg.obj);
                                 break;
+
+                            case EventHub.PROXY_CHANGED:
+                                if (BrowserFrame.sJavaBridge == null) {
+                                    throw new IllegalStateException(
+                                            "No WebView has been created in this process!");
+                                }
+                                BrowserFrame.sJavaBridge.updateProxy((String) msg.obj);
+                                break;
                         }
                     }
                 };
@@ -983,6 +991,8 @@ final class WebViewCore {
 
         static final int AUTOFILL_FORM = 192;
 
+        static final int PROXY_CHANGED = 193;
+
         // private message ids
         private static final int DESTROY =     200;