public virtual void Expand()
{
if (!this.IsCollapsed)
{
return;
}
CancelEventArgs e = new CancelEventArgs();
this.OnExpanding(e);
if (e.Cancel)
{
return;
}
this.IsCollapsed = false;
this.ItemContainer.Visibility = ElementVisibility.Visible;
if (this.GetEffectiveDisplayMode((float)this.Size.Width) == NavigationViewDisplayModes.Expanded)
{
if (this.AllowAnimation)
{
Size size1 = new Size(TelerikDpiHelper.ScaleInt(this.CollapsedPaneWidth, new SizeF(1f / this.DpiScaleFactor.Width, 0.0f)), 0);
Size size2 = new Size(TelerikDpiHelper.ScaleInt(this.ExpandedPaneWidth, new SizeF(1f / this.DpiScaleFactor.Width, 0.0f)), 0);
AnimatedPropertySetting animatedPropertySetting = new AnimatedPropertySetting(RadElement.MinSizeProperty, (object)size1, (object)size2, this.AnimationFrames, this.AnimationInterval);
animatedPropertySetting.AnimationFinished += (AnimationFinishedEventHandler)((param0, param1) =>
{
foreach (LightVisualElement lightVisualElement in (IEnumerable <RadPageViewItem>) this.Items)
{
lightVisualElement.DrawText = true;
}
this.OnExpanded(EventArgs.Empty);
});
animatedPropertySetting.ApplyValue((RadObject)this.ItemContainer);
}
else
{
this.ItemContainer.MinSize = new Size(TelerikDpiHelper.ScaleInt(this.ExpandedPaneWidth, new SizeF(1f / this.DpiScaleFactor.Width, 0.0f)), 0);
this.OnExpanded(EventArgs.Empty);
}
}
else
{
this.PopupStack.Children.Insert(0, (RadElement)this.HamburgerButton);
if (!this.PopupStack.Children.Contains((RadElement)this.ItemContainer))
{
this.PopupStack.Children.Add((RadElement)this.ItemContainer);
}
this.HamburgerButton.Alignment = this.RightToLeft ? ContentAlignment.TopRight : ContentAlignment.TopLeft;
this.HamburgerButton.StretchHorizontally = true;
int num1 = (int)this.ItemContainer.ItemLayout.SetValue(RadPageViewStripElement.StripAlignmentProperty, (object)StripViewAlignment.Right);
int num2 = (int)this.ItemContainer.ResetValue(RadElement.MinSizeProperty, ValueResetFlags.Animation);
this.ItemContainer.MinSize = new Size(TelerikDpiHelper.ScaleInt(this.ExpandedPaneWidth, new SizeF(1f / this.DpiScaleFactor.Width, 0.0f)), 0);
this.ItemContainer.MaxSize = Size.Empty;
foreach (LightVisualElement lightVisualElement in (IEnumerable <RadPageViewItem>) this.Items)
{
lightVisualElement.DrawText = true;
}
if (this.Popup.ElementTree.RootElement.ElementState != ElementState.Loaded)
{
this.Popup.LoadElementTree(new Size(this.ExpandedPaneWidth, (int)this.DesiredSize.Height));
}
RadPageViewNavigationViewElement.ApplyThemeToPopup((RadElementTree)this.ElementTree, this.Popup);
this.Popup.Size = new Size(this.ExpandedPaneWidth, (int)this.DesiredSize.Height);
this.Popup.DropDownAnimationDirection = this.RightToLeft ? RadDirection.Left : RadDirection.Right;
this.Popup.HorizontalPopupAlignment = this.RightToLeft ? HorizontalPopupAlignment.RightToRight : HorizontalPopupAlignment.LeftToLeft;
this.Popup.VerticalPopupAlignment = VerticalPopupAlignment.TopToBottom;
this.Popup.RootElement.BackColor = this.BackColor;
this.Popup.Show(this.PointToScreen(this.RightToLeft ? new Point(this.Bounds.Right, this.Bounds.Top) : new Point(this.Bounds.Left, this.Bounds.Top)));
this.OnExpanded(EventArgs.Empty);
}
}
public HamburgerButtonElement(
RadPageViewNavigationViewElement navigationViewElement)
{
this.navigationViewElement = navigationViewElement;
}