private void UpdateOrientation()
{
if (this.Initializing || this.Items.Count <= 0)
{
return;
}
StackPanel stackPanel = VisualTreeHelper.GetParent((DependencyObject)this.Items[0]) as StackPanel;
if (stackPanel != null && stackPanel.Orientation != this.Orientation)
{
stackPanel.Orientation = this.Orientation;
ScrollViewer scrollHost = ItemsControlExtensions.GetScrollHost((ItemsControl)this);
if (scrollHost != null)
{
scrollHost.HorizontalScrollBarVisibility = this.Orientation == Orientation.Vertical ? ScrollBarVisibility.Disabled : ScrollBarVisibility.Auto;
scrollHost.VerticalScrollBarVisibility = this.Orientation == Orientation.Horizontal ? ScrollBarVisibility.Disabled : ScrollBarVisibility.Auto;
}
}
foreach (object obj in (IEnumerable)this.Items)
{
LegendItem legendItem = obj as LegendItem;
if (legendItem != null && legendItem.Title != null)
{
legendItem.Title.TextTrimming = this.Orientation == Orientation.Vertical ? TextTrimming.WordEllipsis : TextTrimming.None;
}
}
}
public void ClearSelection()
{
this._currentSelectedItem = (LegendItem)null;
foreach (LegendItem legendItem in (IEnumerable)this.Items)
{
legendItem.IsSelected = false;
}
}
public void FireItemClick(LegendItem item)
{
if (item != null && this.ItemClick != null && this.ItemClick.CanExecute((object)item))
{
this.ItemClick.Execute((object)item);
}
this.FireSelectionChanged(item);
}
protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e)
{
foreach (LegendItem legendItem in (IEnumerable)this.Items)
{
legendItem.Owner = this;
}
this._currentSelectedItem = (LegendItem)null;
base.OnItemsChanged(e);
this.UpdateContentVisibility();
this.UpdateOrientation();
this.UpdateColumnWidths();
this.UpdateItemMargins();
this.UpdateItemHeights();
}
private FrameworkElement[][] GetCells()
{
List <FrameworkElement[]> list = new List <FrameworkElement[]>();
foreach (object obj in (IEnumerable)this.Items)
{
LegendItem legendItem = obj as LegendItem;
if (legendItem != null)
{
list.Add(legendItem.GetCells());
}
}
return(list.ToArray());
}
internal LegendItem GetNextItem(LegendItem currentItem, bool isForward)
{
int num = this.Items.IndexOf((object)currentItem);
int index = !isForward ? num - 1 : num + 1;
if (index < 0)
{
index = 0;
}
else if (index > this.Items.Count - 1)
{
index = this.Items.Count - 1;
}
return((LegendItem)this.Items[index]);
}
internal bool SetFocusToItem(LegendItem item)
{
bool flag = false;
if (item != null)
{
if (!item.IsInLegendVisibleArea(this))
{
ScrollViewer scrollHost = ItemsControlExtensions.GetScrollHost((ItemsControl)this);
if (scrollHost != null)
{
ScrollViewerExtensions.ScrollIntoView(scrollHost, (FrameworkElement)item, 0.0, 0.0, (Duration)TimeSpan.Zero.Duration());
}
}
flag = item.Focus();
}
return(flag);
}
private bool ProcessKeysUp(Key key)
{
bool flag = false;
Legend legend = this.Owner;
if (legend == null)
{
return(flag);
}
switch (key)
{
case Key.Return:
case Key.Space:
legend.FireItemClick(this);
break;
case Key.Prior:
LegendItem legendItem1 = Enumerable.FirstOrDefault <LegendItem>(Enumerable.OfType <LegendItem>((IEnumerable)legend.Items), (Func <LegendItem, bool>)(item => item.IsInLegendVisibleArea(legend)));
flag = legend.SetFocusToItem(legendItem1);
break;
case Key.Next:
if (!this.IsInLegendVisibleArea(legend))
{
LegendItem legendItem2 = Enumerable.FirstOrDefault <LegendItem>(Enumerable.OfType <LegendItem>((IEnumerable)legend.Items), (Func <LegendItem, bool>)(item => item.IsInLegendVisibleArea(legend)));
flag = legend.SetFocusToItem(legendItem2);
break;
}
LegendItem legendItem3 = (LegendItem)legend.Items[legend.Items.Count - 1];
legend.SetFocusToItem(legendItem3);
break;
case Key.End:
LegendItem legendItem4 = (LegendItem)legend.Items[legend.Items.Count - 1];
flag = legend.SetFocusToItem(legendItem4);
break;
case Key.Home:
LegendItem legendItem5 = (LegendItem)legend.Items[0];
flag = legend.SetFocusToItem(legendItem5);
break;
}
return(flag);
}
private void FireSelectionChanged(LegendItem selectedItem = null)
{
if (selectedItem == null)
{
selectedItem = this.SelectedItem;
}
if (selectedItem == this._currentSelectedItem)
{
return;
}
this.OnSelectionChanged(new SelectionChangedEventArgs((RoutedEvent)null, (IList) new object[1]
{
(object)this._currentSelectedItem
}, (IList) new object[1]
{
(object)selectedItem
}));
this._currentSelectedItem = selectedItem;
}
private void UpdateItemHeights()
{
if (this.Initializing)
{
return;
}
if (this.EqualItemHeight)
{
double val2 = 0.0;
foreach (object obj in (IEnumerable)this.Items)
{
LegendItem legendItem = obj as LegendItem;
if (legendItem != null)
{
val2 = Math.Max(legendItem.ActualHeight, val2);
}
}
if (val2 <= 0.0)
{
return;
}
foreach (object obj in (IEnumerable)this.Items)
{
LegendItem legendItem = obj as LegendItem;
if (legendItem != null)
{
legendItem.MinHeight = val2;
}
}
}
else
{
foreach (object obj in (IEnumerable)this.Items)
{
LegendItem legendItem = obj as LegendItem;
if (legendItem != null)
{
legendItem.MinHeight = 0.0;
}
}
}
}
private void UpdateItemMargins()
{
if (this.Initializing)
{
return;
}
if (this.Orientation == Orientation.Horizontal)
{
foreach (object obj in (IEnumerable)this.Items)
{
LegendItem legendItem = obj as LegendItem;
if (legendItem != null)
{
if (this.Items.IndexOf(obj) != this.Items.Count - 1)
{
legendItem.ExtendMargin();
}
else
{
legendItem.RestoreOriginalMargin();
}
}
}
}
else
{
foreach (object obj in (IEnumerable)this.Items)
{
LegendItem legendItem = obj as LegendItem;
if (legendItem != null)
{
legendItem.RestoreOriginalMargin();
}
}
}
}
private void FireSelectionChanged(LegendItem selectedItem = null)
{
if (selectedItem == null)
selectedItem = this.SelectedItem;
if (selectedItem == this._currentSelectedItem)
return;
this.OnSelectionChanged(new SelectionChangedEventArgs((RoutedEvent)null, (IList)new object[1]
{
(object) this._currentSelectedItem
}, (IList)new object[1]
{
(object) selectedItem
}));
this._currentSelectedItem = selectedItem;
}
public LegendItemAutomationPeer(LegendItem owner)
: base((FrameworkElement)owner)
{
}
internal bool SetFocusToItem(LegendItem item)
{
bool flag = false;
if (item != null)
{
if (!item.IsInLegendVisibleArea(this))
{
ScrollViewer scrollHost = ItemsControlExtensions.GetScrollHost((ItemsControl)this);
if (scrollHost != null)
ScrollViewerExtensions.ScrollIntoView(scrollHost, (FrameworkElement)item, 0.0, 0.0, (Duration)TimeSpan.Zero.Duration());
}
flag = item.Focus();
}
return flag;
}
protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e)
{
foreach (LegendItem legendItem in (IEnumerable)this.Items)
legendItem.Owner = this;
this._currentSelectedItem = (LegendItem)null;
base.OnItemsChanged(e);
this.UpdateContentVisibility();
this.UpdateOrientation();
this.UpdateColumnWidths();
this.UpdateItemMargins();
this.UpdateItemHeights();
}
internal LegendItem GetNextItem(LegendItem currentItem, bool isForward)
{
int num = this.Items.IndexOf((object)currentItem);
int index = !isForward ? num - 1 : num + 1;
if (index < 0)
index = 0;
else if (index > this.Items.Count - 1)
index = this.Items.Count - 1;
return (LegendItem)this.Items[index];
}
public void FireItemClick(LegendItem item)
{
if (item != null && this.ItemClick != null && this.ItemClick.CanExecute((object)item))
this.ItemClick.Execute((object)item);
this.FireSelectionChanged(item);
}
public void ClearSelection()
{
this._currentSelectedItem = (LegendItem)null;
foreach (LegendItem legendItem in (IEnumerable)this.Items)
legendItem.IsSelected = false;
}
public LegendItemAutomationPeer(LegendItem owner)
: base((FrameworkElement)owner)
{
}
private bool TrySetFocusOnNextItem(Legend legend, bool isForward)
{
LegendItem nextItem = legend.GetNextItem(this, isForward);
return(legend.SetFocusToItem(nextItem));
}
