Add logging to search fragment.

- User leaves screen without any query
- Number of results clicked before leaving screen
- Event of each result click

Bug: 34204146
Test: RunSettingsRoboTests

Change-Id: I357fbb4cdfd4d02370791b4a2ddeb2127fdddf97

src/com/android/settings/search2/InlineSwitchViewHolder.java

@@ -17,14 +17,11 @@
 
 package com.android.settings.search2;
 
-import android.app.Fragment;
-import android.util.Log;
+import android.content.Context;
 import android.view.View;
-import android.view.ViewParent;
 import android.widget.CompoundButton;
 import android.widget.Switch;
 import android.widget.TextView;
-import android.content.Context;
 
 import com.android.internal.widget.PreferenceImageView;
 import com.android.settings.R;
@@ -52,7 +49,7 @@ public class InlineSwitchViewHolder extends SearchViewHolder {
     }
 
     @Override
-    public void onBind(Fragment fragment, SearchResult result) {
+    public void onBind(SearchFragment fragment, SearchResult result) {
         if (mContext == null) {
             return;
         }
@@ -62,6 +59,7 @@ public class InlineSwitchViewHolder extends SearchViewHolder {
         switchView.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
             @Override
             public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+                fragment.onSearchResultClicked();
                 payload.setSwitchValue(mContext, isChecked);
             }
         });

src/com/android/settings/search2/IntentSearchViewHolder.java

@@ -15,7 +15,6 @@
  */
 package com.android.settings.search2;
 
-import android.app.Fragment;
 import android.view.View;
 import android.widget.ImageView;
 import android.widget.TextView;
@@ -40,7 +39,7 @@ public class IntentSearchViewHolder extends SearchViewHolder {
     }
 
     @Override
-    public void onBind(final Fragment fragment, final SearchResult result) {
+    public void onBind(final SearchFragment fragment, final SearchResult result) {
         titleView.setText(result.title);
         summaryView.setText(result.summary);
         iconView.setImageDrawable(result.icon);
@@ -50,6 +49,7 @@ public class IntentSearchViewHolder extends SearchViewHolder {
         itemView.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
+                fragment.onSearchResultClicked();
                 fragment.startActivity(((IntentPayload) result.payload).intent);
             }
         });

src/com/android/settings/search2/SearchFragment.java

@@ -35,23 +35,33 @@ import android.widget.SearchView;
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
 import com.android.settings.core.InstrumentedFragment;
+import com.android.settings.core.instrumentation.MetricsFeatureProvider;
 import com.android.settings.overlay.FeatureFactory;
 
 import java.util.List;
 
 public class SearchFragment extends InstrumentedFragment implements
         SearchView.OnQueryTextListener, LoaderManager.LoaderCallbacks<List<SearchResult>> {
+    private static final String TAG = "SearchFragment";
 
     // State values
-    static final String STATE_QUERY = "query";
+    private static final String STATE_QUERY = "state_query";
+    private static final String STATE_NEVER_ENTERED_QUERY = "state_never_entered_query";
+    private static final String STATE_RESULT_CLICK_COUNT = "state_result_click_count";
 
     // Loader IDs
     private static final int LOADER_ID_DATABASE = 0;
     private static final int LOADER_ID_INSTALLED_APPS = 1;
 
-    @VisibleForTesting
-    String mQuery;
+    // Logging
+    @VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
+    static final String RESULT_CLICK_COUNT = "settings_search_result_click_count";
 
+    @VisibleForTesting(otherwise = VisibleForTesting.PRIVATE)
+    String mQuery;
+    private boolean mNeverEnteredQuery = true;
+    private int mResultClickCount;
+    private MetricsFeatureProvider mMetricsFeatureProvider;
     private SearchFeatureProvider mSearchFeatureProvider;
 
     private SearchResultsAdapter mSearchAdapter;
@@ -65,8 +75,8 @@ public class SearchFragment extends InstrumentedFragment implements
     @Override
     public void onAttach(Context context) {
         super.onAttach(context);
-        mSearchFeatureProvider = FeatureFactory.getFactory(context)
-                .getSearchFeatureProvider();
+        mSearchFeatureProvider = FeatureFactory.getFactory(context).getSearchFeatureProvider();
+        mMetricsFeatureProvider = FeatureFactory.getFactory(context).getMetricsFeatureProvider();
     }
 
     @Override
@@ -76,6 +86,8 @@ public class SearchFragment extends InstrumentedFragment implements
         mSearchAdapter = new SearchResultsAdapter(this);
         if (savedInstanceState != null) {
             mQuery = savedInstanceState.getString(STATE_QUERY);
+            mNeverEnteredQuery = savedInstanceState.getBoolean(STATE_NEVER_ENTERED_QUERY);
+            mResultClickCount = savedInstanceState.getInt(STATE_RESULT_CLICK_COUNT);
             final LoaderManager loaderManager = getLoaderManager();
             loaderManager.initLoader(LOADER_ID_DATABASE, null, this);
             loaderManager.initLoader(LOADER_ID_INSTALLED_APPS, null, this);
@@ -96,10 +108,25 @@ public class SearchFragment extends InstrumentedFragment implements
         return view;
     }
 
+    @Override
+    public void onStop() {
+        super.onStop();
+        final Activity activity = getActivity();
+        if (activity != null && activity.isFinishing()) {
+            mMetricsFeatureProvider.histogram(activity, RESULT_CLICK_COUNT, mResultClickCount);
+            if (mNeverEnteredQuery) {
+                mMetricsFeatureProvider.action(activity,
+                        MetricsProto.MetricsEvent.ACTION_LEAVE_SEARCH_RESULT_WITHOUT_QUERY);
+            }
+        }
+    }
+
     @Override
     public void onSaveInstanceState(Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putString(STATE_QUERY, mQuery);
+        outState.putBoolean(STATE_NEVER_ENTERED_QUERY, mNeverEnteredQuery);
+        outState.putInt(STATE_RESULT_CLICK_COUNT, mResultClickCount);
     }
 
     @Override
@@ -107,6 +134,8 @@ public class SearchFragment extends InstrumentedFragment implements
         if (TextUtils.equals(query, mQuery)) {
             return true;
         }
+        mResultClickCount = 0;
+        mNeverEnteredQuery = false;
         mQuery = query;
         mSearchAdapter.clearResults();
 
@@ -147,6 +176,10 @@ public class SearchFragment extends InstrumentedFragment implements
     public void onLoaderReset(Loader<List<SearchResult>> loader) {
     }
 
+    public void onSearchResultClicked() {
+        mResultClickCount++;
+    }
+
     private void restartLoaders() {
         final LoaderManager loaderManager = getLoaderManager();
         loaderManager.restartLoader(LOADER_ID_DATABASE, null /* args */, this /* callback */);

src/com/android/settings/search2/SearchViewHolder.java

@@ -15,7 +15,6 @@
  */
 package com.android.settings.search2;
 
-import android.app.Fragment;
 import android.support.v7.widget.RecyclerView;
 import android.view.View;
 
@@ -30,5 +29,5 @@ public abstract class SearchViewHolder extends RecyclerView.ViewHolder {
         super(view);
     }
 
-    public abstract void onBind(Fragment fragment, SearchResult result);
+    public abstract void onBind(SearchFragment fragment, SearchResult result);
 }