AndroidGCS: Check in the stubs for a logging activity which will eventually

move into the service and this will become the control interface.

androidgcs/AndroidManifest.xml

@@ -29,6 +29,8 @@
 		<activity android:name="UAVLocation" android:label="@string/location_name" />
 		<activity android:name="ObjectEditor" android:label="ObjectEditor"
 			android:theme="@android:style/Theme.Dialog" />
+		<activity android:name="Logger" android:label="Logger"
+		    android:theme="@android:style/Theme.Dialog" />
 
 		<receiver android:name="TelemetryWidget">
 			<intent-filter>

androidgcs/res/layout/logger.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ListView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent" >
+    
+
+</ListView>

androidgcs/src/org/openpilot/androidgcs/HomePage.java

@@ -41,6 +41,13 @@ public class HomePage extends ObjectManagerActivity {
 			}			
 		});
 
+		Button logger = (Button) findViewById(R.id.launch_logger);
+		logger.setOnClickListener(new OnClickListener() {
+			public void onClick(View arg0) {
+				startActivity(new Intent(HomePage.this, Logger.class));	
+			}
+		});
+
 	}
 
 }

androidgcs/src/org/openpilot/androidgcs/Logger.java

@@ -0,0 +1,37 @@
+package org.openpilot.androidgcs;
+
+import java.util.List;
+
+import org.openpilot.uavtalk.UAVObject;
+
+import android.os.Bundle;
+import android.util.Log;
+
+
+public class Logger extends ObjectManagerActivity {
+	
+	final String TAG = "Logger";
+
+	/** Called when the activity is first created. */
+	@Override
+	public void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+		setContentView(R.layout.logger);
+	}
+	
+	@Override
+	void onOPConnected() {
+		Log.d(TAG, "onOPConnected()");
+		
+		List<List<UAVObject>> allObjects = objMngr.getObjects();
+		registerObjectUpdates(allObjects);
+	}		
+	
+	/**
+	 * Called whenever any objects subscribed to via registerObjects 
+	 */
+	@Override
+	protected void objectUpdated(UAVObject obj) {
+		Log.d(TAG,"Updated: " + obj.toString());
+	}
+}

androidgcs/src/org/openpilot/androidgcs/ObjectManagerActivity.java

@@ -1,7 +1,13 @@
 package org.openpilot.androidgcs;
 
+import java.util.List;
+import java.util.ListIterator;
+import java.util.Observable;
+import java.util.Observer;
+
 import org.openpilot.androidgcs.OPTelemetryService.LocalBinder;
 import org.openpilot.androidgcs.OPTelemetryService.TelemTask;
+import org.openpilot.uavtalk.UAVObject;
 import org.openpilot.uavtalk.UAVObjectManager;
 
 import android.app.Activity;
@@ -12,6 +18,7 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.ServiceConnection;
 import android.os.Bundle;
+import android.os.Handler;
 import android.os.IBinder;
 import android.util.Log;
 import android.view.Menu;
@@ -25,9 +32,13 @@ public abstract class ObjectManagerActivity extends Activity {
 //	private static boolean WARN = LOGLEVEL > 1;
 	private static boolean DEBUG = LOGLEVEL > 0;
 	
+	//! Object manager, populated by parent for the children to use
 	UAVObjectManager objMngr;
+	//! Indicates if the activity is bound to the service
 	boolean mBound = false;
+	//! Indicates if telemetry is connected
 	boolean mConnected = false;
+	//! The binder to access the telemetry task, and thus the object manager
 	LocalBinder binder;
     
 
@@ -42,7 +53,6 @@ public abstract class ObjectManagerActivity extends Activity {
 				Log.d(TAG, "Received intent");
 				TelemTask task;
 				if(intent.getAction().compareTo(OPTelemetryService.INTENT_ACTION_CONNECTED) == 0) {
-					
 					if(binder  == null)
 						return;
 					if((task = binder.getTelemTask(0)) == null)
@@ -67,10 +77,57 @@ public abstract class ObjectManagerActivity extends Activity {
 		registerReceiver(connectedReceiver, filter);
 	}
 	
+	/**
+	 * Called whenever any objects subscribed to via registerObjects 
+	 */
+	protected void objectUpdated(UAVObject obj) {
+		
+	}
+	
+	/**
+	 * A message handler and a custom Observer to use it which calls
+	 * objectUpdated with the right object type
+	 */
+	final Handler uavobjHandler = new Handler(); 	
+	private class UpdatedObserver implements Observer  {
+		UAVObject obj;
+		UpdatedObserver(UAVObject obj) { this.obj = obj; };
+		public void update(Observable observable, Object data) {
+			uavobjHandler.post(new Runnable() {
+				@Override
+				public void run() { objectUpdated(obj); }
+			});
+		}
+	};
+
+	/**
+	 * Register an activity to receive updates from this object
+	 * 
+	 * the objectUpdated() method will be called in the original UI thread
+	 */
+	protected void registerObjectUpdates(UAVObject object) {
+		object.addUpdatedObserver(new UpdatedObserver(object));
+	}
+	protected void registerObjectUpdates(List<List<UAVObject>> objects) {
+		ListIterator<List<UAVObject>> li = objects.listIterator();
+		while(li.hasNext()) {
+			ListIterator<UAVObject> li2 = li.next().listIterator();
+			while(li2.hasNext())
+				registerObjectUpdates(li2.next());
+		}
+	}
+	
+	/**
+	 * Called when either the telemetry establishes a connection or
+	 * if it already has on creation of this activity
+	 */
 	void onOPConnected() {
 		
 	}
 	
+	/**
+	 * Called when telemetry drops the connection
+	 */
 	void onOPDisconnected() {
 		
 	}