public override int getBaseline()
{
android.view.View child = null;
if (getChildCount() > 0)
{
child = getChildAt(0);
}
else
{
if (mAdapter != null && mAdapter.getCount() > 0)
{
child = makeAndAddView(0);
mRecycler.put(0, child);
removeAllViewsInLayout();
}
}
if (child != null)
{
int childBaseline = child.getBaseline();
return(childBaseline >= 0 ? child.getTop() + childBaseline : -1);
}
else
{
return(-1);
}
}
private int getThumbPositionForListPosition(int firstVisibleItem, int visibleItemCount
, int totalItemCount)
{
if (mSectionIndexer == null || mListAdapter == null)
{
getSectionsFromIndexer();
}
if (mSectionIndexer == null || !mMatchDragPosition)
{
return(((mList.getHeight() - mThumbH) * firstVisibleItem) / (totalItemCount - visibleItemCount
));
}
firstVisibleItem -= mListOffset;
if (firstVisibleItem < 0)
{
return(0);
}
totalItemCount -= mListOffset;
int trackHeight = mList.getHeight() - mThumbH;
int section = mSectionIndexer.getSectionForPosition(firstVisibleItem);
int sectionPos = mSectionIndexer.getPositionForSection(section);
int nextSectionPos = mSectionIndexer.getPositionForSection(section + 1);
int sectionCount = mSections.Length;
int positionsInSection = nextSectionPos - sectionPos;
android.view.View child = mList.getChildAt(0);
float incrementalPos = child == null ? 0 : firstVisibleItem + (float)(mList.getPaddingTop
() - child.getTop()) / child.getHeight();
float posWithinSection = (incrementalPos - sectionPos) / positionsInSection;
int result = (int)((section + posWithinSection) / sectionCount * trackHeight);
// Fake out the scrollbar for the last item. Since the section indexer won't
// ever actually move the list in this end space, make scrolling across the last item
// account for whatever space is remaining.
if (firstVisibleItem > 0 && firstVisibleItem + visibleItemCount == totalItemCount)
{
android.view.View lastChild = mList.getChildAt(visibleItemCount - 1);
float lastItemVisible = (float)(mList.getHeight() - mList.getPaddingBottom() - lastChild
.getTop()) / lastChild.getHeight();
result += (int)((trackHeight - result) * lastItemVisible);
}
return(result);
}
protected internal override void onLayout(bool changed, int l, int t, int r, int
b)
{
base.onLayout(changed, l, t, r, b);
bool hasTabs = mTabContainer != null && mTabContainer.getVisibility() != GONE;
if (mTabContainer != null && mTabContainer.getVisibility() != GONE)
{
int containerHeight = getMeasuredHeight();
int tabHeight = mTabContainer.getMeasuredHeight();
if ((mActionBarView.getDisplayOptions() & android.app.ActionBar.DISPLAY_SHOW_HOME
) == 0)
{
// Not showing home, put tabs on top.
int count = getChildCount();
{
for (int i = 0; i < count; i++)
{
android.view.View child = getChildAt(i);
if (child == mTabContainer)
{
continue;
}
if (!mActionBarView.isCollapsed())
{
child.offsetTopAndBottom(tabHeight);
}
}
}
mTabContainer.layout(l, 0, r, tabHeight);
}
else
{
mTabContainer.layout(l, containerHeight - tabHeight, r, containerHeight);
}
}
bool needsInvalidate = false;
if (mIsSplit)
{
if (mSplitBackground != null)
{
mSplitBackground.setBounds(0, 0, getMeasuredWidth(), getMeasuredHeight());
needsInvalidate = true;
}
}
else
{
if (mBackground != null)
{
mBackground.setBounds(mActionBarView.getLeft(), mActionBarView.getTop(), mActionBarView
.getRight(), mActionBarView.getBottom());
needsInvalidate = true;
}
if ((mIsStacked = hasTabs && mStackedBackground != null))
{
mStackedBackground.setBounds(mTabContainer.getLeft(), mTabContainer.getTop(), mTabContainer
.getRight(), mTabContainer.getBottom());
needsInvalidate = true;
}
}
if (needsInvalidate)
{
invalidate();
}
}
