private void ScrollRows(GridTableElement tableElement, Point location)
{
ScrollableRowsContainerElement scrollableRows = tableElement.ViewElement.ScrollableRows;
RadScrollBarElement veritcalScrollbar = this.GetVeritcalScrollbar(tableElement);
Rectangle boundingRectangle = scrollableRows.ControlBoundingRectangle;
if (boundingRectangle.Contains(location) || location.X < boundingRectangle.X || location.X > boundingRectangle.Right)
{
return;
}
int num = 0;
if (location.Y > boundingRectangle.Bottom)
{
num = location.Y - boundingRectangle.Bottom;
}
else if (location.Y < boundingRectangle.Y)
{
num = location.Y - boundingRectangle.Y;
}
if (num == 0 || veritcalScrollbar.Visibility != ElementVisibility.Visible)
{
return;
}
veritcalScrollbar.Value = this.ClampValue(veritcalScrollbar.Value + num, veritcalScrollbar.Minimum, veritcalScrollbar.Maximum - veritcalScrollbar.LargeChange + 1);
}
private Rectangle GetScrollableColumnBounds(GridTableElement tableElement)
{
PinnedRowsContainerElement topPinnedRows = tableElement.ViewElement.TopPinnedRows;
ScrollableRowsContainerElement scrollableRows = tableElement.ViewElement.ScrollableRows;
PinnedRowsContainerElement bottomPinnedRows = tableElement.ViewElement.BottomPinnedRows;
RadElement radElement = (RadElement)null;
if (topPinnedRows.Children.Count > 0)
{
radElement = (RadElement)topPinnedRows;
}
else if (scrollableRows.Children.Count > 0)
{
radElement = (RadElement)scrollableRows;
}
else if (bottomPinnedRows.Children.Count > 0)
{
radElement = (RadElement)bottomPinnedRows;
}
if (radElement == null)
{
return(Rectangle.Empty);
}
Rectangle boundingRectangle = (radElement.Children[0] as GridVirtualizedRowElement).ScrollableColumns.ControlBoundingRectangle;
if (tableElement.VScrollBar.Visibility != ElementVisibility.Collapsed)
{
boundingRectangle.Width -= tableElement.VScrollBar.ControlBoundingRectangle.Width;
}
if (tableElement.HScrollBar.Visibility != ElementVisibility.Collapsed)
{
boundingRectangle.Height -= tableElement.HScrollBar.ControlBoundingRectangle.Height;
}
return(boundingRectangle);
}
protected virtual bool TryEnsureRowVisibilityByTraverser(
GridViewRowInfo rowInfo,
bool isLastRow,
RadScrollBarElement verticalScrollBar,
ScrollableRowsContainerElement scrollableRows,
out GridRowElement row,
out bool isTraverserd)
{
int num = verticalScrollBar.Maximum - verticalScrollBar.LargeChange + 1;
if (isLastRow && num != verticalScrollBar.Value)
{
this.ChangeScrollbarValue(verticalScrollBar, num);
this.UpdateLayout();
}
row = this.GetRowElement(rowInfo);
isTraverserd = false;
if (row != null)
{
return(false);
}
int height = (int)this.RowScroller.ElementProvider.GetElementSize(rowInfo).Height;
this.EnsureScrollingDelta(rowInfo, isLastRow, ref height);
if (this.UseScrollbarsInHierarchy && scrollableRows.Children.Count > 0)
{
GridDetailViewRowElement child = scrollableRows.Children[scrollableRows.Children.Count - 1] as GridDetailViewRowElement;
height += child != null ? child.RowInfo.Height - child.Size.Height : 0;
}
isTraverserd = this.EnsureRowVisibleByTraverser(verticalScrollBar, rowInfo, (float)height);
return(true);
}
private bool EnsureRowVisibleByTraverserDown(
RadScrollBarElement vScrollBar,
GridViewRowInfo rowInfo,
ScrollableRowsContainerElement rows,
float delta)
{
GridRowElement child = (GridRowElement)rows.Children[rows.Children.Count - 1];
GridTraverser enumerator = (GridTraverser)((IEnumerable)this.RowScroller).GetEnumerator();
while (enumerator.Current is GridViewDetailsRowInfo)
{
enumerator.MoveNext();
}
enumerator.MovePrevious();
if (enumerator.Current == rowInfo)
{
return(this.ChangeScrollbarValue(vScrollBar, vScrollBar.Value - (int)delta));
}
do
{
;
}while (enumerator.MoveNext() && enumerator.Current != child.RowInfo);
enumerator.MoveNext();
if (enumerator.Current == rowInfo)
{
return(this.ChangeScrollbarValue(vScrollBar, vScrollBar.Value + (int)delta));
}
return(false);
}
protected virtual bool EnsureRowVisibleCore(GridViewRowInfo rowInfo)
{
bool isTraverserd = false;
bool isLastRow = false;
bool isFirstRow = false;
GridRowElement row = this.GetRowElement(rowInfo);
this.DetermineScrollableRowPosition(rowInfo, out isFirstRow, out isLastRow);
ScrollableRowsContainerElement scrollableRows = this.ViewElement.ScrollableRows;
RadScrollBarElement vericalScrollBar = this.UseScrollbarsInHierarchy ? this.VScrollBar : this.MasterVScrollBar;
if (row == null && this.TryEnsureRowVisibilityByTraverser(rowInfo, isLastRow, vericalScrollBar, scrollableRows, out row, out isTraverserd))
{
return(isTraverserd);
}
RectangleF boundingRectangle1 = (RectangleF)this.MasterTableElement.ViewElement.ScrollableRows.ControlBoundingRectangle;
RectangleF innerClientRectangle = this.GetInnerClientRectangle(rowInfo);
Rectangle boundingRectangle2 = row.ControlBoundingRectangle;
int scrollValue = vericalScrollBar.Value;
if (this.GridViewElement.SplitMode != RadGridViewSplitMode.None && this.MasterTableElement != row.TableElement)
{
return(false);
}
if ((double)boundingRectangle2.Bottom > (double)boundingRectangle1.Bottom || (double)boundingRectangle2.Bottom > (double)innerClientRectangle.Bottom)
{
this.EnsureRowVisibilityAtBottom(rowInfo, isLastRow, (RectangleF)boundingRectangle2, innerClientRectangle, ref vericalScrollBar, ref scrollValue);
}
else if ((double)boundingRectangle2.Y < (double)boundingRectangle1.Y || this.ParentHScrollBar.Visibility == ElementVisibility.Visible && this.ParentHScrollBar.ControlBoundingRectangle.IntersectsWith(boundingRectangle2) || this.UseScrollbarsInHierarchy && (double)boundingRectangle2.Y < (double)innerClientRectangle.Y)
{
this.EnsureRowVisibilityAtTop((RectangleF)boundingRectangle2, boundingRectangle1, innerClientRectangle, ref vericalScrollBar, ref scrollValue);
}
return(this.ChangeScrollbarValue(vericalScrollBar, scrollValue));
}
protected GridViewRowInfo GetLastScrollableRow(GridTableElement tableElement)
{
ScrollableRowsContainerElement scrollableRows = tableElement.ViewElement.ScrollableRows;
GridTraverser enumerator = (GridTraverser)((IEnumerable)tableElement.RowScroller).GetEnumerator();
int index = 0;
while (index < scrollableRows.Children.Count && (scrollableRows.Children[index].BoundingRectangle.Bottom <= scrollableRows.Size.Height && enumerator.MoveNext()))
{
++index;
}
return(enumerator.Current);
}
protected GridViewRowInfo GetFirstScrollableRow(
GridTableElement tableElement,
bool checkBounds)
{
ScrollableRowsContainerElement scrollableRows = tableElement.ViewElement.ScrollableRows;
GridTraverser enumerator = (GridTraverser)((IEnumerable)tableElement.RowScroller).GetEnumerator();
if (enumerator.Current == null)
{
enumerator.MoveNext();
}
return(enumerator.Current);
}
protected virtual bool EnsureRowVisibleByTraverser(
RadScrollBarElement vScrollBar,
GridViewRowInfo rowInfo,
float delta)
{
ScrollableRowsContainerElement scrollableRows = this.ViewElement.ScrollableRows;
RadElementCollection children = scrollableRows.Children;
int num1 = vScrollBar.Maximum - vScrollBar.LargeChange + 1;
while (vScrollBar.Maximum != 0 && children.Count == 0)
{
this.ChangeScrollbarValue(vScrollBar, vScrollBar.Value + 1);
this.UpdateLayout();
if (scrollableRows.Children.Count > 0 || vScrollBar.Value == num1 || vScrollBar.Value == vScrollBar.Maximum)
{
break;
}
}
if (children.Count == 0)
{
return(false);
}
if (this.EnsureRowVisibleByTraverserDown(vScrollBar, rowInfo, scrollableRows, delta))
{
return(true);
}
GridRowElement child = (GridRowElement)scrollableRows.Children[0];
if (((GridTraverser)((IEnumerable)this.RowScroller).GetEnumerator()).Current == rowInfo)
{
int num2 = vScrollBar.Value - (int)delta;
if (num2 < vScrollBar.Minimum)
{
num2 = vScrollBar.Minimum;
}
else if (num2 > vScrollBar.Maximum)
{
num2 = vScrollBar.Maximum;
}
return(this.ChangeScrollbarValue(vScrollBar, num2));
}
GridViewGroupRowInfo parent = rowInfo.Parent as GridViewGroupRowInfo;
if (parent != null && !parent.IsExpanded)
{
return(false);
}
return(this.RowScroller.ScrollToItem(rowInfo, false));
}
private void CorrectScrollbarRangeInHierarchy()
{
GridTableElement tableElement = ((RowsContainerElement)this.Parent).TableElement;
RadGridViewElement gridViewElement = tableElement.GridViewElement;
RadScrollBarElement vscrollBar = tableElement.VScrollBar;
MasterGridViewTemplate masterTemplate = tableElement.MasterTemplate;
if (masterTemplate == null || masterTemplate.Templates.Count == 0 || (gridViewElement.UseScrollbarsInHierarchy || tableElement.ViewInfo.ParentRow != null) || (this.Children.Count == 0 || vscrollBar.Value < vscrollBar.Maximum - vscrollBar.LargeChange + 1))
{
return;
}
GridDetailViewRowElement child1 = this.Children[this.Children.Count - 1] as GridDetailViewRowElement;
if (child1 == null || child1.ContentCell.ChildTableElement.ViewInfo == null)
{
return;
}
ScrollableRowsContainerElement scrollableRows = child1.ContentCell.ChildTableElement.ViewElement.ScrollableRows;
int count = scrollableRows.Children.Count;
GridTraverser gridTraverser = new GridTraverser(child1.ContentCell.ChildTableElement.ViewInfo);
gridTraverser.TraversalMode = GridTraverser.TraversalModes.ScrollableRows;
int num1 = 0;
while (gridTraverser.MoveNext())
{
++num1;
if (num1 > count)
{
int height = (int)child1.ContentCell.ChildTableElement.RowElementProvider.GetElementSize(gridTraverser.Current).Height;
tableElement.RowScroller.UpdateScrollRange(vscrollBar.Maximum + height, false);
return;
}
}
if (scrollableRows.Children.Count <= 0)
{
return;
}
GridRowElement child2 = (GridRowElement)scrollableRows.Children[scrollableRows.Children.Count - 1];
if (child2.ControlBoundingRectangle.Bottom <= scrollableRows.ControlBoundingRectangle.Bottom)
{
return;
}
int num2 = child2.ControlBoundingRectangle.Bottom - scrollableRows.ControlBoundingRectangle.Bottom;
tableElement.RowScroller.UpdateScrollRange(vscrollBar.Maximum + num2, false);
}
protected override void CreateChildElements()
{
base.CreateChildElements();
ChildrenChangedEventHandler changedEventHandler = new ChildrenChangedEventHandler(this.rows_ChildrenChanged);
this.topPinnedRows = new PinnedRowsContainerElement();
this.topPinnedRows.ZIndex = 10;
this.topPinnedRows.ChildrenChanged += changedEventHandler;
this.Children.Add((RadElement)this.topPinnedRows);
this.scrollableRows = new ScrollableRowsContainerElement();
this.scrollableRows.ChildrenChanged += changedEventHandler;
this.Children.Add((RadElement)this.scrollableRows);
this.bottomPinnedRows = new PinnedRowsContainerElement();
this.bottomPinnedRows.ZIndex = 5;
this.bottomPinnedRows.ChildrenChanged += changedEventHandler;
this.Children.Add((RadElement)this.bottomPinnedRows);
}
