Bug 1038789 - Add clear button to search bar in search activity. r=eedens

mobile/android/search/java/org/mozilla/search/autocomplete/SearchFragment.java

@@ -19,6 +19,7 @@ import android.view.ViewGroup;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.AdapterView;
+import android.widget.Button;
 import android.widget.EditText;
 import android.widget.FrameLayout;
 import android.widget.ListView;
@@ -30,7 +31,6 @@ import org.mozilla.search.R;
  * A fragment to handle autocomplete. Its interface with the outside
  * world should be very very limited.
  * <p/>
- * TODO: Add clear button to search input
  * TODO: Add more search providers (other than the dictionary)
  */
 public class SearchFragment extends Fragment implements AdapterView.OnItemClickListener,
@@ -95,6 +95,14 @@ public class SearchFragment extends Fragment implements AdapterView.OnItemClickL
             }
         });
 
+        final Button clearButton = (Button) mainView.findViewById(R.id.clear_button);
+        clearButton.setOnClickListener(new View.OnClickListener(){
+            @Override
+            public void onClick(View v) {
+                searchBar.setText("");
+            }
+        });
+
         backdropFrame.setOnClickListener(new BackdropClickListener());
 
         autoCompleteAdapter = new AutoCompleteAdapter(getActivity(), this);

mobile/android/search/res/layout/search_auto_complete.xml

@@ -25,10 +25,24 @@
         android:orientation="vertical"
         >
 
+        <FrameLayout
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content">
+
             <EditText
                 android:id="@+id/auto_complete_search_bar"
                 style="@style/AutoCompleteEditText"/>
 
+            <Button
+                android:id="@+id/clear_button"
+                android:layout_width="26dp"
+                android:layout_height="26dp"
+                android:layout_gravity="right|center_vertical"
+                android:layout_marginRight="3dp"
+                android:background="@drawable/search_clear" />
+
+        </FrameLayout>
+
         <ListView
             android:id="@+id/auto_complete_dropdown"
             style="@style/AutoCompleteDropdown"/>