private void dismissAbove(int position)
{
View view = AdapterViewUtil.getViewForPosition(getListViewWrapper(), getListViewWrapper().getFirstVisiblePosition());
if (view != null)
{
view.Measure(View.MeasureSpec.MakeMeasureSpec(0, MeasureSpecMode.Unspecified), View.MeasureSpec.MakeMeasureSpec(0, MeasureSpecMode.Unspecified));
int scrollDistance = view.MeasuredHeight;
getListViewWrapper().smoothScrollBy(scrollDistance, (int)mDismissAnimationTime);
mHandler.PostDelayed(new RestoreScrollRunnable(scrollDistance, position, this), mDismissAnimationTime);
}
}
//@Nullable
private View findViewForPosition(int position)
{
if (mListViewWrapper == null)
{
throw new Java.Lang.IllegalStateException("Call setAbsListView on this ExpanableListItemAdapter!");
}
View result = null;
for (int i = 0; i < mListViewWrapper.getChildCount() && result == null; i++)
{
View childView = mListViewWrapper.getChildAt(i);
if (childView != null && AdapterViewUtil.getPositionForView(mListViewWrapper, childView) == position)
{
result = childView;
}
}
return(result);
}
private bool handleDownEvent(View view, MotionEvent motionEvent)
{
if (!mSwipeEnabled)
{
return(false);
}
View downView = findDownView(motionEvent);
if (downView == null)
{
return(false);
}
int downPosition = AdapterViewUtil.getPositionForView(mListViewWrapper, downView);
mCanDismissCurrent = isDismissable(downPosition);
/* Check if we are processing the item at this position */
if (mCurrentPosition == downPosition || downPosition >= mVirtualListCount)
{
return(false);
}
if (view != null)
{
view.OnTouchEvent(motionEvent);
}
disableHorizontalScrollContainerIfNecessary(motionEvent, downView);
mDownX = motionEvent.GetX();
mDownY = motionEvent.GetY();
mCurrentView = downView;
mSwipingView = getSwipeView(downView);
mCurrentPosition = downPosition;
mVelocityTracker = VelocityTracker.Obtain();
mVelocityTracker.AddMovement(motionEvent);
return(true);
}
/**
* Flings the {@link android.view.View} corresponding to given position out of sight.
* Calling this method has the same effect as manually swiping an item off the screen.
*
* @param position the position of the item in the {@link android.widget.ListAdapter}. Must be visible.
*/
public virtual void fling(int position)
{
int firstVisiblePosition = mListViewWrapper.getFirstVisiblePosition();
int lastVisiblePosition = mListViewWrapper.getLastVisiblePosition();
if (position < firstVisiblePosition || position > lastVisiblePosition)
{
throw new Java.Lang.IllegalArgumentException("View for position " + position + " not visible!");
}
View downView = AdapterViewUtil.getViewForPosition(mListViewWrapper, position);
if (downView == null)
{
throw new Java.Lang.IllegalStateException("No view found for position " + position);
}
flingView(downView, position, true);
mActiveSwipeCount++;
mVirtualListCount--;
}
/**
* Performs the undo animation and restores the original state for given {@link android.view.View}.
*
* @param view the parent {@code View} which contains both primary and undo {@code View}s.
*/
public void undo(View view)
{
int position = AdapterViewUtil.getPositionForView(getListViewWrapper(), view);
mUndoPositions.Remove(position);
View primaryView = mCallback.getPrimaryView(view);
View undoView = mCallback.getUndoView(view);
primaryView.Visibility = ViewStates.Visible;
ObjectAnimator undoAlphaAnimator = ObjectAnimator.OfFloat(undoView, ALPHA, 1f, 0f);
ObjectAnimator primaryAlphaAnimator = ObjectAnimator.OfFloat(primaryView, ALPHA, 0f, 1f);
ObjectAnimator primaryXAnimator = ObjectAnimator.OfFloat(primaryView, TRANSLATION_X, primaryView.Width, 0f);
AnimatorSet animatorSet = new AnimatorSet();
animatorSet.PlayTogether(undoAlphaAnimator, primaryAlphaAnimator, primaryXAnimator);
animatorSet.AddListener(new UndoAnimatorListener(undoView, this));
animatorSet.Start();
mCallback.onUndo(view, position);
}
