Changes for scroll-to-cursor functionality.

ReactTextInputSelectionEvent.java

/**
 * Event emitted by EditText native view when the text selection changes.
 */
/* package */ class ReactTextInputSelectionEvent
    extends Event<ReactTextInputSelectionEvent> {

  private static final String EVENT_NAME = "topSelectionChange";

  private int mSelectionStart;
  private int mSelectionEnd;
  /* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
  private float mCursorPositionX;
  private float mCursorPositionY;
  /* <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< */

  public ReactTextInputSelectionEvent(
      int viewId,
      int selectionStart,
      int selectionEnd,
  /* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
      float cursorPositionX,
      float cursorPositionY) {
  /* <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< */
    super(viewId);
    mSelectionStart = selectionStart;
    mSelectionEnd = selectionEnd;
  /* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
    mCursorPositionX = cursorPositionX;
    mCursorPositionY = cursorPositionY;
  /* <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< */
  }

  @Override
  public String getEventName() {
    return EVENT_NAME;
  }

  @Override
  public void dispatch(RCTEventEmitter rctEventEmitter) {
    rctEventEmitter.receiveEvent(getViewTag(), getEventName(), serializeEventData());
  }

  private WritableMap serializeEventData() {
    WritableMap eventData = Arguments.createMap();

    WritableMap selectionData = Arguments.createMap();
    selectionData.putInt("end", mSelectionEnd);
    selectionData.putInt("start", mSelectionStart);
  /* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
    selectionData.putDouble("cursorPositionX", mCursorPositionX);
    selectionData.putDouble("cursorPositionY", mCursorPositionY);
  /* <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< */

    eventData.putMap("selection", selectionData);
    return eventData;
  }
}