internal void ClearItemContainer(object item, ItemsControl parentItemsControl)
{
if (VirtualizingPanel.GetIsVirtualizing(parentItemsControl))
{
//
// ItemValueStorage: save off values for this container if we're a virtualizing TreeView.
//
//
// Right now we have a hard-coded list of DPs we want to save off. In the future we could provide a 'register' API
// so that each ItemsControl could decide what DPs to save on its containers. Maybe we define a virtual method to
// retrieve a list of DPs the type is interested in. Alternatively we could have the contract
// be that ItemsControls use the ItemStorageService inside their ClearContainerForItemOverride by calling into StoreItemValues.
//
Helper.StoreItemValues(parentItemsControl, this, item);
// Tell the panel to clear off all its containers. This will cause this method to be called
// recursively down the tree, allowing all descendent data to be stored before we save off
// the ItemValueStorage DP for this container.
VirtualizingPanel vp = ItemsHost as VirtualizingPanel;
if (vp != null)
{
vp.OnClearChildrenInternal();
}
ItemContainerGenerator.RemoveAllInternal(true /*saveRecycleQueue*/);
}
// this container is going away - forget about its selection
ContainsSelection = false;
}
// Token: 0x06004E0F RID: 19983 RVA: 0x0015FE30 File Offset: 0x0015E030
internal void ClearItemContainer(object item, ItemsControl parentItemsControl)
{
if (this.Generator == null)
{
return;
}
if (parentItemsControl != null && VirtualizingPanel.GetIsVirtualizingWhenGrouping(parentItemsControl))
{
Helper.StoreItemValues(parentItemsControl, this, item);
if (this._expander != null)
{
Helper.StoreItemValues(parentItemsControl, this._expander, item);
}
VirtualizingPanel virtualizingPanel = this._itemsHost as VirtualizingPanel;
if (virtualizingPanel != null)
{
virtualizingPanel.OnClearChildrenInternal();
}
this.Generator.RemoveAllInternal(true);
}
else
{
this.Generator.Release();
}
base.ClearContentControl(item);
}
internal void ClearItemContainer(object item, ItemsControl parentItemsControl)
{
if (Generator == null)
{
return; // user-declared GroupItem - ignore (bug 108423)
}
ItemContainerGenerator generator = Generator.Parent;
GroupStyle groupStyle = generator.GroupStyle;
if (Object.Equals(this.Content, item))
{
ClearValue(ContentProperty);
}
if (this.ContentTemplate == groupStyle.HeaderTemplate)
{
ClearValue(ContentTemplateProperty);
}
if (this.ContentTemplateSelector == groupStyle.HeaderTemplateSelector)
{
ClearValue(ContentTemplateSelectorProperty);
}
if (this.ContentStringFormat == groupStyle.HeaderStringFormat)
{
ClearValue(ContentStringFormatProperty);
}
//
// ItemValueStorage: save off values for this container if we're a virtualizing Group.
//
if (parentItemsControl != null && VirtualizingPanel.GetIsVirtualizingWhenGrouping(parentItemsControl))
{
Helper.StoreItemValues((IContainItemStorage)parentItemsControl, this, item);
if (_expander != null)
{
Helper.StoreItemValues((IContainItemStorage)parentItemsControl, _expander, item);
}
// Tell the panel to clear off all its containers. This will cause this method to be called
// recursively down the tree, allowing all descendent data to be stored before we save off
// the ItemValueStorage DP for this container.
VirtualizingPanel vp = _itemsHost as VirtualizingPanel;
if (vp != null)
{
vp.OnClearChildrenInternal();
}
Generator.RemoveAllInternal(true /*saveRecycleQueue*/);
}
else
{
Generator.Release();
}
}
// Token: 0x06005930 RID: 22832 RVA: 0x0018A4E0 File Offset: 0x001886E0
internal void ClearItemContainer(object item, ItemsControl parentItemsControl)
{
if (VirtualizingPanel.GetIsVirtualizing(parentItemsControl))
{
Helper.StoreItemValues(parentItemsControl, this, item);
VirtualizingPanel virtualizingPanel = base.ItemsHost as VirtualizingPanel;
if (virtualizingPanel != null)
{
virtualizingPanel.OnClearChildrenInternal();
}
base.ItemContainerGenerator.RemoveAllInternal(true);
}
this.ContainsSelection = false;
}
internal void ClearItemContainer(object item, ItemsControl parentItemsControl)
{
if (Generator == null)
{
return; // user-declared GroupItem - ignore (
}
//
// ItemValueStorage: save off values for this container if we're a virtualizing Group.
//
if (parentItemsControl != null && VirtualizingPanel.GetIsVirtualizingWhenGrouping(parentItemsControl))
{
Helper.StoreItemValues((IContainItemStorage)parentItemsControl, this, item);
if (_expander != null)
{
Helper.StoreItemValues((IContainItemStorage)parentItemsControl, _expander, item);
}
// Tell the panel to clear off all its containers. This will cause this method to be called
// recursively down the tree, allowing all descendent data to be stored before we save off
// the ItemValueStorage DP for this container.
VirtualizingPanel vp = _itemsHost as VirtualizingPanel;
if (vp != null)
{
vp.OnClearChildrenInternal();
}
Generator.RemoveAllInternal(true /*saveRecycleQueue*/);
}
else
{
Generator.Release();
}
ClearContentControl(item);
}
