Merge "Return an empty accessibility node info for a keyboard"

 */

final class KeyboardAccessibilityNodeProvider extends AccessibilityNodeProviderCompat {

    private static final String TAG = KeyboardAccessibilityNodeProvider.class.getSimpleName();

    private static final int UNDEFINED = Integer.MIN_VALUE;

    // From {@link android.view.accessibility.AccessibilityNodeInfo#UNDEFINED_ITEM_ID}.

    private static final int UNDEFINED = Integer.MAX_VALUE;

    private final KeyCodeDescriptionMapper mKeyCodeDescriptionMapper;

    private final AccessibilityUtils mAccessibilityUtils;

        }

        if (virtualViewId == View.NO_ID) {

            // We are requested to create an AccessibilityNodeInfo describing

            // this View, i.e. the root of the virtual sub-tree.

            // this View. Returning an empty info is sufficient for a keyboard.

            final AccessibilityNodeInfoCompat rootInfo =

                    AccessibilityNodeInfoCompat.obtain(mKeyboardView);

            ViewCompat.onInitializeAccessibilityNodeInfo(mKeyboardView, rootInfo);

            // Add the virtual children of the root View.

            final List<Key> sortedKeys = mKeyboard.getSortedKeys();

            final int size = sortedKeys.size();

            for (int index = 0; index < size; index++) {

                final Key key = sortedKeys.get(index);

                if (key.isSpacer()) {

                    continue;

                }

                // Use an index of the sorted keys list as a virtual view id.

                rootInfo.addChild(mKeyboardView, index);

            }

            return rootInfo;

        }