PageRange[] ComputeWrittenPageRanges(SparseIntArray writtenPages)
{
var pageRanges = new List <PageRange> ();
int start = -1;
int end = -1;
int writtenPageCount = writtenPages.Size();
for (int i = 0; i < writtenPageCount; i++)
{
if (start < 0)
{
start = writtenPages.ValueAt(i);
}
int oldEnd = end = start;
while (i < writtenPageCount && (end - oldEnd) <= 1)
{
oldEnd = end;
end = writtenPages.ValueAt(i);
i++;
}
var pageRange = new PageRange(start, end);
pageRanges.Add(pageRange);
start = end = -1;
}
return(pageRanges.ToArray());
}
private void Init()
{
_mChildrenHeights = new SparseIntArray();
_mHeaderViewInfos = new List <FixedViewInfo>();
_mFooterViewInfos = new List <FixedViewInfo>();
base.SetClipChildren(false);
ScrollStateChanged += (sender, args) =>
{
if (_mOriginalScrollListener != null)
{
_mOriginalScrollListener.OnScrollStateChanged(args.View, args.ScrollState);
}
};
Scroll += (sender, args) =>
{
if (_mOriginalScrollListener != null)
{
_mOriginalScrollListener.OnScroll(args.View, args.FirstVisibleItem, args.VisibleItemCount, args.TotalItemCount);
}
// AbsListView#invokeOnItemScrollListener calls onScrollChanged(0, 0, 0, 0)
// on Android 4.0+, but Android 2.3 is not. (Android 3.0 is unknown)
// So call it with onScrollListener.
OnScrollChanged();
};
}
protected override void OnRestoreInstanceState(IParcelable state) {
ObservableListSavedState ss = (ObservableListSavedState) state;
_mPrevFirstVisiblePosition = ss.PrevFirstVisiblePosition;
_mPrevFirstVisibleChildHeight = ss.PrevFirstVisibleChildHeight;
_mPrevScrolledChildrenHeight = ss.PrevScrolledChildrenHeight;
_mPrevScrollY = ss.PrevScrollY;
_mScrollY = ss.ScrollY;
_mChildrenHeights = ss.ChildrenHeights;
base.OnRestoreInstanceState(ss.SuperState);
}
protected override void OnRestoreInstanceState(IParcelable state)
{
ObservableListSavedState ss = (ObservableListSavedState)state;
_mPrevFirstVisiblePosition = ss.PrevFirstVisiblePosition;
_mPrevFirstVisibleChildHeight = ss.PrevFirstVisibleChildHeight;
_mPrevScrolledChildrenHeight = ss.PrevScrolledChildrenHeight;
_mPrevScrollY = ss.PrevScrollY;
_mScrollY = ss.ScrollY;
_mChildrenHeights = ss.ChildrenHeights;
base.OnRestoreInstanceState(ss.SuperState);
}
/**
* Called by CREATOR.
*/
private ObservableListSavedState(Parcel input)
: base(input)
{
PrevFirstVisiblePosition = input.ReadInt();
PrevFirstVisibleChildHeight = input.ReadInt();
PrevScrolledChildrenHeight = input.ReadInt();
PrevScrollY = input.ReadInt();
ScrollY = input.ReadInt();
ChildrenHeights = new SparseIntArray();
int numOfChildren = input.ReadInt();
if (0 < numOfChildren)
{
for (int i = 0; i < numOfChildren; i++)
{
int key = input.ReadInt();
int value = input.ReadInt();
ChildrenHeights.Put(key, value);
}
}
}
/**
* Called by CREATOR.
*/
private ObservableListSavedState(Parcel input)
: base(input)
{
PrevFirstVisiblePosition = input.ReadInt();
PrevFirstVisibleChildHeight = input.ReadInt();
PrevScrolledChildrenHeight = input.ReadInt();
PrevScrollY = input.ReadInt();
ScrollY = input.ReadInt();
ChildrenHeights = new SparseIntArray();
int numOfChildren = input.ReadInt();
if (0 < numOfChildren)
{
for (int i = 0; i < numOfChildren; i++)
{
int key = input.ReadInt();
int value = input.ReadInt();
ChildrenHeights.Put(key, value);
}
}
}
private void Init() {
_mChildrenHeights = new SparseIntArray();
CheckLibraryVersion();
}
private void Init()
{
_mChildrenHeights = new SparseIntArray();
CheckLibraryVersion();
}
private void Init()
{
_mChildrenHeights = new SparseIntArray();
_mHeaderViewInfos = new List<FixedViewInfo>();
_mFooterViewInfos = new List<FixedViewInfo>();
base.SetClipChildren(false);
ScrollStateChanged += (sender, args) =>
{
if (_mOriginalScrollListener != null)
{
_mOriginalScrollListener.OnScrollStateChanged(args.View, args.ScrollState);
}
};
Scroll += (sender, args) =>
{
if (_mOriginalScrollListener != null)
{
_mOriginalScrollListener.OnScroll(args.View, args.FirstVisibleItem, args.VisibleItemCount, args.TotalItemCount);
}
// AbsListView#invokeOnItemScrollListener calls onScrollChanged(0, 0, 0, 0)
// on Android 4.0+, but Android 2.3 is not. (Android 3.0 is unknown)
// So call it with onScrollListener.
OnScrollChanged();
};
}
