/// <summary>
/// Makes an item visible. The item will appear as checked in the
/// overflow menu.
/// </summary>
/// <param name="item">The item to make visible.</param>
public virtual void CheckItem(RadPageViewOutlookItem item)
{
if (!this.uncheckedItems.Contains(item))
{
return;
}
this.uncheckedItems.Remove(item);
OutlookViewItemEventArgs args = new OutlookViewItemEventArgs(item);
this.OnItemChecked(this, args);
if (this.hiddenItems.Contains(item))
{
return;
}
item.Visibility = ElementVisibility.Visible;
//Hide the first possible visible item in case we check
//an item that was initially visible.
if (this.GetCurrentlyVisibleItemsCount() > this.layoutInfo.itemCount)
{
this.HideFirstPossibleItem();
}
}
protected virtual void OnItemCollapsed(object sender, OutlookViewItemEventArgs args)
{
OutlookViewItemEventHandler handler = this.Events[ItemCollapsedEventKey] as OutlookViewItemEventHandler;
if (handler != null)
{
handler(sender, args);
}
}
internal virtual bool HideFirstPossibleItem()
{
RadPageViewOutlookItem item = this.GetNextVisibleItem();
if (item == null || this.hiddenItems.Contains(item))
{
return(false);
}
item.Visibility = ElementVisibility.Collapsed;
this.hiddenItems.Add(item);
this.itemsContainer.RegisterCollapsedItem(item);
OutlookViewItemEventArgs args = new OutlookViewItemEventArgs(item);
this.OnItemCollapsed(this, args);
return(true);
}
/// <summary>
/// Makes an item invisible. The item will appear as unchecked in the
/// overflow menu.
/// </summary>
/// <param name="item">The item to make invisible.</param>
public virtual void UncheckItem(RadPageViewOutlookItem item)
{
if (this.uncheckedItems.Contains(item))
{
return;
}
this.uncheckedItems.Add(item);
item.Visibility = ElementVisibility.Collapsed;
OutlookViewItemEventArgs args = new OutlookViewItemEventArgs(item);
this.OnItemUnchecked(this, args);
//Show the first possible hidden item in case we uncheck
//an item that is among the visible items.
if (!this.hiddenItems.Contains(item) &&
this.GetCurrentlyVisibleItemsCount() <= this.layoutInfo.itemCount)
{
this.ShowFirstPossibleItem();
}
}
internal virtual bool ShowFirstPossibleItem()
{
if (this.hiddenItems.Count == 0)
{
return(false);
}
RadPageViewOutlookItem item = null;
for (int i = this.hiddenItems.Count - 1; i > -1; i--)
{
item = this.hiddenItems[i];
if (this.uncheckedItems.Contains(item))
{
item = null;
continue;
}
else
{
break;
}
}
if (item == null)
{
return(false);
}
this.hiddenItems.Remove(item);
item.Visibility = ElementVisibility.Visible;
this.itemsContainer.UnregisterCollapsedItem(item);
OutlookViewItemEventArgs args = new OutlookViewItemEventArgs(item);
this.OnItemShown(this, args);
return(true);
}
