Merge "Fix issue that expanded widgets appear before next item moved down" into main

import static com.android.launcher3.allapps.ActivityAllAppsContainerView.AdapterHolder.SEARCH;

import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_WIDGETSTRAY_SEARCHED;

import static com.android.launcher3.testing.shared.TestProtocol.NORMAL_STATE_ORDINAL;

import static com.android.launcher3.widget.picker.WidgetsListAdapter.VIEW_TYPE_WIDGETS_LIST;

import android.animation.Animator;

import android.content.Context;

                default:

                    break;

            }

            mWidgetsListItemAnimator = new DefaultItemAnimator();

            mWidgetsListItemAnimator = new DefaultItemAnimator() {

                @Override

                public boolean animateChange(RecyclerView.ViewHolder oldHolder,

                        RecyclerView.ViewHolder newHolder, int fromLeft, int fromTop, int toLeft,

                        int toTop) {

                    // As we expand an item, the content / widgets list that appears (with add

                    // event) also gets change events as its previews load asynchronously. The

                    // super implementation of animateChange cancels the animations on it - breaking

                    // the "add animation". Instead, here, we skip "change" animation for content

                    // list - because we want it to either appear or disappear. And, the previews

                    // themselves have their own animation when loaded, so, we don't need change

                    // animations for them anyway. Below, we do-nothing.

                    if (oldHolder.getItemViewType() == VIEW_TYPE_WIDGETS_LIST) {

                        dispatchChangeStarting(oldHolder, true);

                        dispatchChangeFinished(oldHolder, true);

                        return true;

                    }

                    return super.animateChange(oldHolder, newHolder, fromLeft, fromTop, toLeft,

                            toTop);

                }

            };

            // Disable change animations because it disrupts the item focus upon adapter item

            // change.

            mWidgetsListItemAnimator.setSupportsChangeAnimations(false);

            // Make the moves a bit faster, so that the amount of time for which user sees the

            // bottom-sheet background before "add" animation starts is less making it smoother.

            mWidgetsListItemAnimator.setChangeDuration(90);

            mWidgetsListItemAnimator.setMoveDuration(90);

            mWidgetsListItemAnimator.setAddDuration(300);

        }

        private int getEmptySpaceHeight() {