/// <summary>
/// set and save last top index
/// </summary>
/// <param name="guiTopIndex"> </param>
internal override void SetGuiTopIndex(int guiTopIndex)
{
_guiTopIndex = guiTopIndex;
_tableControl.Scroll -= TableHandler.getInstance().ScrollHandler;
_tableControl.SetTopIndex(guiTopIndex, false);
_tableControl.Scroll += TableHandler.getInstance().ScrollHandler;
}
/// <returns>
/// </returns>
internal static TableHandler getInstance()
{
if (_instance == null)
{
_instance = new TableHandler();
}
return(_instance);
}
/// <summary>
/// sets the items count of table control
/// </summary>
/// <param name="count"></param>
internal void SetTableControlItemsCount(int count)
{
#if !PocketPC
//prevent unnecessary resizes
_tableControl.Layout -= TableHandler.getInstance().LayoutHandler;
#endif
_tableControl.SetItemsCount(count);
#if !PocketPC
//prevent unnecessary resizes
_tableControl.Layout += TableHandler.getInstance().LayoutHandler;
#endif
}
/// <summary>
/// sets the virtual items count of table control
/// </summary>
/// <param name="count">the count to set</param>
internal override void SetTableVirtualItemsCount(int count)
{
#if !PocketPC
//prevent unnecessary resizes
_tableControl.Layout -= TableHandler.getInstance().LayoutHandler;
#endif
_tableControl.VirtualItemsCount = count;
#if !PocketPC
//prevent unnecessary resizes
_tableControl.Layout += TableHandler.getInstance().LayoutHandler;
#endif
}
/// <summary>
/// sets Table Items Count
/// </summary>
/// <param name="newCount">the count to set</param>
internal override void SetTableItemsCount(int newCount)
{
if (_mgCount != newCount)
{
RefreshPageNeeded = true;
}
_mgCount = newCount;
int oldCount = GetTableControlItemsCount();
bool updated = false;
if (newCount != 0)
{
// update includesFirst according to number rows in table, if number of rows is too small
// creating dummy record is impossible
updated = updateIncludeFirst();
if (!_includesFirst)
{
newCount++;
if (updated)
// when chunks are added and size becomes bigger than page,
// create dummy first line
{
//TODO new TableItem(table, 0, 0);
_prevTopGuiIndex = -1;
//SetItemsCount may cause resize, in this case we need mgCount to be updated with correct value
if (_tableControl.VirtualItemsCount < 2)
{
//setItemscount 1 will not work if we have less then 2 items. QCR #434423
SetTableControlItemsCount(newCount);
}
}
}
if (!_includesLast)
{
newCount++;
}
}
if (IsSmallerThanScreen(newCount))
{
//QCR #997566, need to show scrollbar to let user know there are records before current record
newCount = _rowsInPage + 1; //create dummy records for this
}
if (oldCount != newCount || updated)
{
RefreshPageNeeded = true;
}
// In RC when table is invalidated it always get setitemscount(0) and then setItemsCount(realcount). So, after request with (newCount == 0)
// there will always follow real request with correct number of rows (we always have at least one row in RC). So, when newCount == 0 we are
// in temporary state and should not do any “resize”.
if (newCount == 0)
{
_tableControl.HorizontalScrollVisibilityChanged -= TableHandler.getInstance().HorizontalScrollVisibilityChangedHandler;
}
SetTableControlItemsCount(newCount);
if (newCount == 0)
{
_tableControl.HorizontalScrollVisibilityChanged += TableHandler.getInstance().HorizontalScrollVisibilityChangedHandler;
}
if (!_includesFirst && updated)
{
SetTopIndex(0);
}
}