protected override Size MeasureOverride(Size availableSize)
{
Size panelDesiredSize = new Size();
for (int i = 0; i < Children.Count; i++)
{
UIElement child = Children[i];
Debug.Assert(child != null, "child not expected to be null");
Debug.Assert(RibbonQuickAccessToolBar.GetIsOverflowItem(child) == true, "child expected to have IsOverflowItem == true");
Size infinity = new Size(Double.PositiveInfinity, availableSize.Height);
child.Measure(infinity);
panelDesiredSize.Width += child.DesiredSize.Width;
panelDesiredSize.Height = Math.Max(panelDesiredSize.Height, child.DesiredSize.Height);
}
return(panelDesiredSize);
}
private void ValidateMeasure()
{
// validation code
if (QAT.HasOverflowItems)
{
Debug.Assert(GeneratedChildren.Count > InternalChildren.Count);
int numItemsExpectedInOverflowPanel = GeneratedChildren.Count - InternalChildren.Count;
Debug.Assert(QAT.OverflowPanel.Children.Count == numItemsExpectedInOverflowPanel);
}
// MainPanel
for (int j = 0; j < InternalChildren.Count; j++)
{
Debug.Assert(object.ReferenceEquals(InternalChildren[j], GeneratedChildren[j]));
UIElement currentChild = InternalChildren[j];
Debug.Assert(currentChild != null);
Debug.Assert(RibbonQuickAccessToolBar.GetIsOverflowItem(currentChild) == false);
Debug.Assert(this.Children.Contains(currentChild) == true);
Debug.Assert(QAT.OverflowPanel.Children.Contains(currentChild) == false);
Debug.Assert(currentChild.IsVisible == this.IsVisible);
Debug.Assert(currentChild.DesiredSize.Width > 0.0);
}
// OverflowPanel
for (int k = InternalChildren.Count; k < GeneratedChildren.Count; k++)
{
int overflowPanelIndex = k - InternalChildren.Count;
Debug.Assert(object.ReferenceEquals(QAT.OverflowPanel.Children[overflowPanelIndex], GeneratedChildren[k]));
UIElement currentChild = GeneratedChildren[k];
Debug.Assert(currentChild != null);
Debug.Assert(RibbonQuickAccessToolBar.GetIsOverflowItem(currentChild) == true);
Debug.Assert(this.Children.Contains(currentChild) == false);
Debug.Assert(QAT.OverflowPanel.Children.Contains(currentChild) == true);
}
}