Keep Search View visible after search completed

Improve Search View behavior
Add Search View background color

Bug:26143355
Change-Id: Ifdc4bfff56fc6244c571dfbeff4179e1515d53b7

packages/DocumentsUI/res/menu/activity.xml

@@ -15,11 +15,19 @@
 -->
 
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
+<!-- showAsAction flag impacts the behavior of SearchView.
+     When set to collapseActionView, collapsing SearchView to icon is the
+     default behavior. It would fit UX, however after expanding SearchView is
+     shown on the left site of the toolbar (replacing title). Since no way to
+     prevent this behavior was found, the flag is set to always. SearchView is
+     always visible by default and it is being collapse manually by calling
+     setIconified() method
+-->
     <item
         android:id="@+id/menu_search"
         android:title="@string/menu_search"
         android:icon="@drawable/ic_menu_search"
-        android:showAsAction="always|collapseActionView"
+        android:showAsAction="always"
         android:actionViewClass="android.widget.SearchView"
         android:imeOptions="actionSearch" />
     <item

packages/DocumentsUI/res/values/colors.xml

@@ -33,4 +33,6 @@
     <color name="item_doc_background">#fffafafa</color>
     <color name="item_doc_background_selected">#ffe0f2f1</color>
 
+    <color name="menu_search_background">#ff676f74</color>
+
 </resources>

packages/DocumentsUI/src/com/android/documentsui/BaseActivity.java

@@ -38,13 +38,15 @@ import android.provider.DocumentsContract;
 import android.provider.DocumentsContract.Root;
 import android.support.annotation.LayoutRes;
 import android.support.annotation.Nullable;
+import android.text.TextUtils;
 import android.util.Log;
 import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
-import android.view.MenuItem.OnActionExpandListener;
 import android.view.View;
+import android.view.View.OnClickListener;
+import android.view.View.OnFocusChangeListener;
 import android.view.ViewGroup;
 import android.widget.AdapterView;
 import android.widget.AdapterView.OnItemSelectedListener;
@@ -214,6 +216,7 @@ public abstract class BaseActivity extends Activity {
                 case R.id.menu_advanced:
                 case R.id.menu_file_size:
                 case R.id.menu_new_window:
+                case R.id.menu_search:
                     break;
                 default:
                     item.setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
@@ -315,6 +318,8 @@ public abstract class BaseActivity extends Activity {
      * the (abstract) directoryChanged method will be called.
      * @param anim
      */
+    // TODO: Refactor the usage of the method - now it is called not only when the directory
+    // changed, but also to refresh the content of the directory while searching
     final void onCurrentDirectoryChanged(int anim) {
         mDirectoryContainer.setDrawDisappearingFirst(anim == ANIM_DOWN);
         onDirectoryChanged(anim);
@@ -325,7 +330,11 @@ public abstract class BaseActivity extends Activity {
         }
 
         updateActionBar();
-        invalidateOptionsMenu();
+
+        // Prevents searchView from being recreated while searching
+        if (!mSearchManager.isSearching()) {
+            invalidateOptionsMenu();
+        }
     }
 
     final List<String> getExcludedAuthorities() {
@@ -682,7 +691,7 @@ public abstract class BaseActivity extends Activity {
      * Facade over the various search parts in the menu.
      */
     final class SearchManager implements
-            SearchView.OnCloseListener, OnActionExpandListener, OnQueryTextListener,
+            SearchView.OnCloseListener, OnQueryTextListener, OnClickListener, OnFocusChangeListener,
             DocumentsToolBar.OnActionViewCollapsedListener {
 
         private boolean mSearchExpanded;
@@ -700,9 +709,10 @@ public abstract class BaseActivity extends Activity {
             mView = (SearchView) mMenu.getActionView();
 
             mActionBar.setOnActionViewCollapsedListener(this);
-            mMenu.setOnActionExpandListener(this);
             mView.setOnQueryTextListener(this);
             mView.setOnCloseListener(this);
+            mView.setOnSearchClickListener(this);
+            mView.setOnQueryTextFocusChangeListener(this);
         }
 
         /**
@@ -755,19 +765,13 @@ public abstract class BaseActivity extends Activity {
          *     search currently.
          */
         boolean cancelSearch() {
-            boolean collapsed = false;
-            boolean closed = false;
-
-            if (mActionBar.hasExpandedActionView()) {
-                mActionBar.collapseActionView();
-                collapsed = true;
-            }
-
             if (isExpanded() || isSearching()) {
-                onClose();
-                closed = true;
+                // If the query string is not empty search view won't get iconified
+                mView.setQuery("", false);
+                mView.setIconified(true);
+                return true;
             }
-            return collapsed || closed;
+            return false;
         }
 
         boolean isSearching() {
@@ -778,6 +782,11 @@ public abstract class BaseActivity extends Activity {
             return mSearchExpanded;
         }
 
+        /**
+         * Clears the search.
+         * @return True if the default behavior of clearing/dismissing SearchView should be
+         *      overridden. False otherwise.
+         */
         @Override
         public boolean onClose() {
             mSearchExpanded = false;
@@ -786,33 +795,33 @@ public abstract class BaseActivity extends Activity {
                 return false;
             }
 
-            mState.currentSearch = null;
-            onCurrentDirectoryChanged(ANIM_NONE);
+            mView.setBackgroundColor(
+                    getResources().getColor(android.R.color.transparent, null));
+
+            // Refresh the directory if a search was done
+            if(mState.currentSearch != null) {
+                mState.currentSearch = null;
+                onCurrentDirectoryChanged(ANIM_NONE);
+            }
+
             return false;
         }
 
+        /**
+         * Sets mSearchExpanded.
+         * Called when search icon is clicked to start search.
+         * Used to detect when the view expanded instead of onMenuItemActionExpand, because
+         * SearchView has showAsAction set to always and onMenuItemAction* methods are not called.
+         */
         @Override
-        public boolean onMenuItemActionExpand(MenuItem item) {
+        public void onClick (View v) {
             mSearchExpanded = true;
-            updateActionBar();
-            return true;
-        }
-
-        @Override
-        public boolean onMenuItemActionCollapse(MenuItem item) {
-            mSearchExpanded = false;
-            if (mIgnoreNextCollapse) {
-                mIgnoreNextCollapse = false;
-                return true;
-            }
-            mState.currentSearch = null;
-            onCurrentDirectoryChanged(ANIM_NONE);
-            return true;
+            mView.setBackgroundColor(
+                    getResources().getColor(R.color.menu_search_background, null));
         }
 
         @Override
         public boolean onQueryTextSubmit(String query) {
-            mSearchExpanded = true;
             mState.currentSearch = query;
             mView.clearFocus();
             onCurrentDirectoryChanged(ANIM_NONE);
@@ -824,6 +833,18 @@ public abstract class BaseActivity extends Activity {
             return false;
         }
 
+        @Override
+        public void onFocusChange(View v, boolean hasFocus) {
+            if(!hasFocus) {
+                if(mState.currentSearch == null) {
+                    mView.setIconified(true);
+                }
+                else if(TextUtils.isEmpty(mView.getQuery())) {
+                    cancelSearch();
+                }
+            }
+        }
+
         @Override
         public void onActionViewCollapsed() {
             updateActionBar();

packages/DocumentsUI/src/com/android/documentsui/dirlist/DirectoryFragment.java

@@ -403,7 +403,6 @@ public class DirectoryFragment extends Fragment {
                     state.derivedMode = result.mode;
                 }
                 state.derivedSortOrder = result.sortOrder;
-                ((BaseActivity) context).onStateChanged();
 
                 updateDisplayState();