How to use

clear

method

in

com.badlogic.gdx.scenes.scene2d.utils.ArraySelection

/** Sets the selection to only the selected index.
 * @param index -1 to clear the selection. */
public void setSelectedIndex (int index) {
  if (index < -1 || index >= items.size)
    throw new IllegalArgumentException("index must be >= -1 and < " + items.size + ": " + index);
  if (index == -1) {
    selection.clear();
  } else {
    selection.set(items.get(index));
  }
}

/** Sets the selection to only the selected index.
 * @param index -1 to clear the selection. */
public void setSelectedIndex (int index) {
  if (index < -1 || index >= items.size)
    throw new IllegalArgumentException("index must be >= -1 and < " + items.size + ": " + index);
  if (index == -1) {
    selection.clear();
  } else {
    selection.set(items.get(index));
  }
}

public void clearItems () {
  if (items.size == 0) return;
  items.clear();
  selection.clear();
  invalidateHierarchy();
}

public void clearItems () {
  if (items.size == 0) return;
  items.clear();
  selection.clear();
  invalidateHierarchy();
}

public void clearItems () {
  if (items.size == 0) return;
  items.clear();
  selection.clear();
  invalidateHierarchy();
}

public void clearItems () {
  if (items.size == 0) return;
  items.clear();
  selection.clear();
  invalidateHierarchy();
}

  /** Removes objects from the selection that are no longer in the items array. If {@link #getRequired()} is true and there is no
   * selected item, the first item is selected. */
  public void validate () {
    Array<T> array = this.array;
    if (array.size == 0) {
      clear();
      return;
    }
    for (Iterator<T> iter = items().iterator(); iter.hasNext();) {
      T selected = iter.next();
      if (!array.contains(selected, false)) iter.remove();
    }
    if (required && selected.size == 0) set(array.first());
  }
}

  /** Removes objects from the selection that are no longer in the items array. If {@link #getRequired()} is true and there is no
   * selected item, the first item is selected. */
  public void validate () {
    Array<T> array = this.array;
    if (array.size == 0) {
      clear();
      return;
    }
    for (Iterator<T> iter = items().iterator(); iter.hasNext();) {
      T selected = iter.next();
      if (!array.contains(selected, false)) iter.remove();
    }
    if (required && selected.size == 0) set(array.first());
  }
}

/** Sets the selection to only the passed item, if it is a possible choice, else selects the first item. */
public void setSelected (T item) {
  if (items.contains(item, false))
    selection.set(item);
  else if (items.size > 0)
    selection.set(items.first());
  else
    selection.clear();
}

/** Sets the selection to only the passed item, if it is a possible choice, else selects the first item. */
public void setSelected (T item) {
  if (items.contains(item, false))
    selection.set(item);
  else if (items.size > 0)
    selection.set(items.first());
  else
    selection.clear();
}

/** Sets the selection to only the passed item, if it is a possible choice.
 * @param item May be null. */
public void setSelected (T item) {
  if (items.contains(item, false))
    selection.set(item);
  else if (selection.getRequired() && items.size > 0)
    selection.set(items.first());
  else
    selection.clear();
}

/** Sets the selection to only the passed item, if it is a possible choice.
 * @param item May be null. */
public void setSelected (T item) {
  if (items.contains(item, false))
    selection.set(item);
  else if (selection.getRequired() && items.size > 0)
    selection.set(items.first());
  else
    selection.clear();
}

case Keys.A:
  if (UIUtils.ctrl() && selection.getMultiple()) {
    selection.clear();
    selection.addAll(items);
    return true;

case Keys.A:
  if (UIUtils.ctrl() && selection.getMultiple()) {
    selection.clear();
    selection.addAll(items);
    return true;

/** Sets the selection to only the selected index.
 * @param index -1 to clear the selection. */
public void setSelectedIndex (int index) {
  if (index < -1 || index >= items.size)
    throw new IllegalArgumentException("index must be >= -1 and < " + items.size + ": " + index);
  if (index == -1) {
    selection.clear();
  } else {
    selection.set(items.get(index));
  }
}

public void clearItems () {
  if (items.size == 0) return;
  items.clear();
  selection.clear();
  invalidateHierarchy();
}

public void clearItems () {
  if (items.size == 0) return;
  items.clear();
  selection.clear();
  invalidateHierarchy();
}

public boolean keyDown (InputEvent event, int keycode) {
  if (keycode == Keys.A && UIUtils.ctrl() && selection.getMultiple()) {
    selection.clear();
    selection.addAll(items);
    return true;
  }
  return false;
}

/** Sets the selection to only the passed item, if it is a possible choice, else selects the first item. */
public void setSelected (T item) {
  if (items.contains(item, false))
    selection.set(item);
  else if (items.size > 0)
    selection.set(items.first());
  else
    selection.clear();
}

/** Sets the selection to only the passed item, if it is a possible choice.
 * @param item May be null. */
public void setSelected (T item) {
  if (items.contains(item, false))
    selection.set(item);
  else if (selection.getRequired() && items.size > 0)
    selection.set(items.first());
  else
    selection.clear();
}