Example usage for com.google.gwt.user.client.ui HasScrolling setHorizontalScrollPosition

Introduction

In this page you can find the example usage for com.google.gwt.user.client.ui HasScrolling setHorizontalScrollPosition.

Prototype

void setHorizontalScrollPosition(int position);

Source Link

Document

Sets the horizontal scroll position.

Usage

From source file:com.google.gwt.sample.showcase.client.content.cell.Cells.java

/**
 * Wrap the given cell so that if/*from   w  w  w  . j av  a  2  s. c o m*/
 * {@link Cell#resetFocus(com.google.gwt.cell.client.Cell.Context, Element, Object)} is
 * called on it, the wrapped cell will focus itself, but will also make sure that the
 * browser window doesn't automatically scroll the cell into view. This is handy for
 * cells that should respond to keyboard commands even when out of view.
 *
 * <p>Note that refocusing on top-level cells will happen automatically when a cell widget
 * is redrawn. One surprising cause of a redraws is that HasDataPresenter optimizes extensions
 * to a short list by just redoing the whole list. See
 * {@link com.google.gwt.user.cellview.client.HasDataPresenter#REDRAW_THRESHOLD} for what
 * can trigger redraws.
 */
public static <T> Cell<T> makeFocusableWithoutScrolling(Cell<T> cellToWrap, final HasScrolling scrollable) {
    return new CellAdapter<T, T>(cellToWrap, null, null) {
        @Override
        public boolean resetFocus(Context context, Element parent, T value) {
            int x = scrollable.getHorizontalScrollPosition();
            int y = scrollable.getVerticalScrollPosition();
            parent.focus();
            scrollable.setHorizontalScrollPosition(x);
            scrollable.setVerticalScrollPosition(y);
            return true;
        }
    };
}

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