Add drawer with state information

platform_tools/android/apps/viewer/src/main/java/org/skia/viewer/ViewerActivity.java

Index: platform_tools/android/apps/viewer/src/main/java/org/skia/viewer/ViewerActivity.java
diff --git a/platform_tools/android/apps/viewer/src/main/java/org/skia/viewer/ViewerActivity.java b/platform_tools/android/apps/viewer/src/main/java/org/skia/viewer/ViewerActivity.java
index 49f711d517171556670b14cd8432a3cff7a2e474..ce5bb0dedadae99c950d0a6f01e4b9dc32a9e78f 100644
--- a/platform_tools/android/apps/viewer/src/main/java/org/skia/viewer/ViewerActivity.java
+++ b/platform_tools/android/apps/viewer/src/main/java/org/skia/viewer/ViewerActivity.java
@@ -8,9 +8,10 @@
 package org.skia.viewer;
 
 import android.app.Activity;
+import android.content.res.Configuration;
 import android.os.Bundle;
-import android.util.Log;
-import android.view.GestureDetector;
+import android.support.v4.widget.DrawerLayout;
+import android.support.v7.app.ActionBarDrawerToggle;
 import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -20,11 +21,17 @@ import android.view.Surface;
 import android.view.SurfaceHolder;
 import android.view.SurfaceView;
 import android.view.View;
+import android.widget.ListView;
 
 public class ViewerActivity
         extends Activity implements SurfaceHolder.Callback, View.OnTouchListener {
     private static final float FLING_VELOCITY_THRESHOLD = 1000;
 
+    private DrawerLayout mDrawerLayout;
+    private ActionBarDrawerToggle mDrawerToggle;
+    private ListView mDrawerList;
+    private StateAdapter mStateAdapter;
+
     private SurfaceView mView;
     private ViewerApplication mApplication;
 
@@ -33,6 +40,7 @@ public class ViewerActivity
     private native void onSurfaceDestroyed(long handle);
     private native void onKeyPressed(long handle, int keycode);
     private native void onTouched(long handle, int owner, int state, float x, float y);
+    private native void onUIStateChanged(long handle, String stateName, String stateValue);
 
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
@@ -43,6 +51,12 @@ public class ViewerActivity
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
+        // Pass the event to ActionBarDrawerToggle, if it returns
+        // true, then it has handled the app icon touch event
+        if (mDrawerToggle.onOptionsItemSelected(item)) {
+            return true;
+        }
+
         switch (item.getItemId()) {
             case R.id.action_left:
                 onKeyPressed(mApplication.getNativeHandle(), KeyEvent.KEYCODE_SOFT_LEFT);
@@ -60,12 +74,36 @@ public class ViewerActivity
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        mApplication = (ViewerApplication) getApplication();
-        mApplication.setViewerActivity(this);
         mView = (SurfaceView) findViewById(R.id.surfaceView);
         mView.getHolder().addCallback(this);
 
         mView.setOnTouchListener(this);
+
+        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
+        mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
+                R.string.drawer_open, R.string.drawer_close);
+        mDrawerLayout.addDrawerListener(mDrawerToggle);
+        getActionBar().setDisplayHomeAsUpEnabled(true);
+        getActionBar().setHomeButtonEnabled(true);
+
+        mDrawerList = (ListView) findViewById(R.id.leftDrawer);
+        mStateAdapter = new StateAdapter(this);
+        mDrawerList.setAdapter(mStateAdapter);
+
+        mApplication = (ViewerApplication) getApplication();
+        mApplication.setViewerActivity(this);
+    }
+
+    @Override
+    protected void onPostCreate(Bundle savedInstanceState) {
+        super.onPostCreate(savedInstanceState);
+        mDrawerToggle.syncState();
+    }
+
+    @Override
+    public void onConfigurationChanged(Configuration newConfig) {
+        super.onConfigurationChanged(newConfig);
+        mDrawerToggle.onConfigurationChanged(newConfig);
     }
 
     @Override
@@ -107,4 +145,12 @@ public class ViewerActivity
         }
         return true;
     }
+
+    public void setState(String stateJson) {
+        mStateAdapter.setState(stateJson);
+    }
+
+    public void onStateChanged(String stateName, String stateValue) {
+        onUIStateChanged(mApplication.getNativeHandle(), stateName, stateValue);
+    }
 }