/// <summary>
/// Used to create an unset DataGridCellInfo.
/// </summary>
internal DataGridCellInfo(object item)
{
Debug.Assert(item == DependencyProperty.UnsetValue, "This should only be used to make an Unset CellInfo.");
_info = new ItemsControl.ItemInfo(item);
_column = null;
_owner = null;
}
// Token: 0x060055E7 RID: 21991 RVA: 0x0017CDF9 File Offset: 0x0017AFF9
internal void Remove(ItemsControl.ItemInfo info)
{
if (!this._selector.SelectionChange.IsActive || !this._updatingSelectedItems)
{
throw new InvalidOperationException(SR.Get("DeferSelectionNotActive"));
}
this._selector.SelectionChange.Unselect(info);
}
/// <summary>
/// Remove an ItemInfo from the deferred selection
/// </summary>
internal void Remove(ItemsControl.ItemInfo info)
{
if (!_selector.SelectionChange.IsActive || !_updatingSelectedItems)
{
throw new InvalidOperationException("Cannot end a selection when no selection is in progress.");
}
_selector.SelectionChange.Unselect(info);
}
/// <summary>
/// Add an ItemInfo to the deferred selection
/// </summary>
internal void Add(ItemsControl.ItemInfo info)
{
if (!_selector.SelectionChange.IsActive || !_updatingSelectedItems)
{
throw new InvalidOperationException("Cannot end a selection when no selection is in progress.");
}
_selector.SelectionChange.Select(info, true /* assumeInItemsCollection */);
}
/// <summary>
/// Add an ItemInfo to the deferred selection
/// </summary>
internal void Add(ItemsControl.ItemInfo info)
{
if (!_selector.SelectionChange.IsActive || !_updatingSelectedItems)
{
throw new InvalidOperationException(SR.Get(SRID.DeferSelectionNotActive));
}
_selector.SelectionChange.Select(info, true /* assumeInItemsCollection */);
}
// Token: 0x0600513E RID: 20798 RVA: 0x0016C9B4 File Offset: 0x0016ABB4
private void MakeSingleSelection(ListBoxItem listItem)
{
if (ItemsControl.ItemsControlFromItemContainer(listItem) == this)
{
ItemsControl.ItemInfo info = base.ItemInfoFromContainer(listItem);
base.SelectionChange.SelectJustThisItem(info, true);
listItem.Focus();
this.UpdateAnchorAndActionItem(info);
}
}
internal DataGridCellInfo(ItemsControl.ItemInfo info, DataGridColumn column, DataGrid owner)
{
Debug.Assert(info != null, "item should not be null.");
Debug.Assert(column != null, "column should not be null.");
Debug.Assert(owner != null, "owner should not be null.");
_info = info;
_column = column;
_owner = new WeakReference(owner);
}
/// <summary>
/// Identifies a cell at the column within the row for the specified item.
/// </summary>
/// <param name="item">The item who's row contains the cell.</param>
/// <param name="column">The column of the cell within the row.</param>
/// <remarks>
/// This constructor will not tie the DataGridCellInfo to any particular
/// DataGrid.
/// </remarks>
public DataGridCellInfo(object item, DataGridColumn column)
{
if (column == null)
{
throw new ArgumentNullException("column");
}
_info = new ItemsControl.ItemInfo(item);
_column = column;
_owner = null;
}
// Token: 0x06005146 RID: 20806 RVA: 0x0016CC6C File Offset: 0x0016AE6C
internal override bool FocusItem(ItemsControl.ItemInfo info, ItemsControl.ItemNavigateArgs itemNavigateArgs)
{
bool result = base.FocusItem(info, itemNavigateArgs);
ListBoxItem listBoxItem = info.Container as ListBoxItem;
if (listBoxItem != null)
{
this.LastActionItem = listBoxItem;
this.MakeKeyboardSelection(listBoxItem);
}
return(result);
}
// Token: 0x060058EA RID: 22762 RVA: 0x00189810 File Offset: 0x00187A10
private bool HandleScrollByPage(KeyEventArgs e)
{
IInputElement focusedElement = Keyboard.FocusedElement;
ItemsControl itemsControl = ItemsControl.ItemsControlFromItemContainer(this._selectedContainer);
ItemsControl.ItemInfo startingInfo = (itemsControl != null) ? itemsControl.ItemInfoFromContainer(this._selectedContainer) : null;
FrameworkElement frameworkElement = this._selectedContainer.HeaderElement;
if (frameworkElement == null)
{
frameworkElement = this._selectedContainer;
}
return(base.NavigateByPage(startingInfo, frameworkElement, (e.Key == Key.Prior) ? FocusNavigationDirection.Up : FocusNavigationDirection.Down, new ItemsControl.ItemNavigateArgs(e.Device, Keyboard.Modifiers)));
}
// Token: 0x060051CD RID: 20941 RVA: 0x0016E190 File Offset: 0x0016C390
internal override bool FocusItem(ItemsControl.ItemInfo info, ItemsControl.ItemNavigateArgs itemNavigateArgs)
{
bool result = base.FocusItem(info, itemNavigateArgs);
if (itemNavigateArgs.DeviceUsed is KeyboardDevice)
{
MenuItem menuItem = info.Container as MenuItem;
if (menuItem != null && menuItem.Role == MenuItemRole.TopLevelHeader && menuItem.IsSubmenuOpen)
{
menuItem.NavigateToStart(itemNavigateArgs);
}
}
return(result);
}
// Token: 0x0600513D RID: 20797 RVA: 0x0016C964 File Offset: 0x0016AB64
private void UpdateAnchorAndActionItem(ItemsControl.ItemInfo info)
{
object item = info.Item;
ListBoxItem listBoxItem = info.Container as ListBoxItem;
if (item == DependencyProperty.UnsetValue)
{
this.AnchorItemInternal = null;
this.LastActionItem = null;
}
else
{
this.AnchorItemInternal = info;
this.LastActionItem = listBoxItem;
}
KeyboardNavigation.SetTabOnceActiveElement(this, listBoxItem);
}
// Token: 0x060055DB RID: 21979 RVA: 0x0017CA9C File Offset: 0x0017AC9C
protected override void ClearItems()
{
if (this._updatingSelectedItems)
{
using (IEnumerator <ItemsControl.ItemInfo> enumerator = ((IEnumerable <ItemsControl.ItemInfo>) this._selector._selectedItems).GetEnumerator())
{
while (enumerator.MoveNext())
{
ItemsControl.ItemInfo info = enumerator.Current;
this._selector.SelectionChange.Unselect(info);
}
return;
}
}
using (this.ChangeSelectedItems())
{
base.ClearItems();
}
}
/// <summary>Responds to a list box selection change by raising a <see cref="E:System.Windows.Controls.Primitives.Selector.SelectionChanged" /> event. </summary>
/// <param name="e">Provides data for <see cref="T:System.Windows.Controls.SelectionChangedEventArgs" />. </param>
// Token: 0x06005130 RID: 20784 RVA: 0x0016C274 File Offset: 0x0016A474
protected override void OnSelectionChanged(SelectionChangedEventArgs e)
{
base.OnSelectionChanged(e);
if (this.SelectionMode == SelectionMode.Single)
{
ItemsControl.ItemInfo internalSelectedInfo = base.InternalSelectedInfo;
ListBoxItem listBoxItem = (internalSelectedInfo != null) ? (internalSelectedInfo.Container as ListBoxItem) : null;
if (listBoxItem != null)
{
this.UpdateAnchorAndActionItem(internalSelectedInfo);
}
}
if (AutomationPeer.ListenerExists(AutomationEvents.SelectionPatternOnInvalidated) || AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementSelected) || AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementAddedToSelection) || AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementRemovedFromSelection))
{
ListBoxAutomationPeer listBoxAutomationPeer = UIElementAutomationPeer.CreatePeerForElement(this) as ListBoxAutomationPeer;
if (listBoxAutomationPeer != null)
{
listBoxAutomationPeer.RaiseSelectionEvents(e);
}
}
}
// Token: 0x06005924 RID: 22820 RVA: 0x0018A270 File Offset: 0x00188470
private bool HandleUpDownKey(bool up, KeyEventArgs e)
{
FocusNavigationDirection direction = up ? FocusNavigationDirection.Up : FocusNavigationDirection.Down;
if (this.AllowHandleKeyEvent(direction))
{
TreeView parentTreeView = this.ParentTreeView;
IInputElement focusedElement = Keyboard.FocusedElement;
if (parentTreeView != null)
{
FrameworkElement frameworkElement = this.HeaderElement;
if (frameworkElement == null)
{
frameworkElement = this;
}
ItemsControl itemsControl = ItemsControl.ItemsControlFromItemContainer(this);
ItemsControl.ItemInfo startingInfo = (itemsControl != null) ? itemsControl.ItemInfoFromContainer(this) : null;
return(parentTreeView.NavigateByLine(startingInfo, frameworkElement, direction, new ItemsControl.ItemNavigateArgs(e.Device, Keyboard.Modifiers)));
}
}
return(false);
}
// Token: 0x06005140 RID: 20800 RVA: 0x0016CA28 File Offset: 0x0016AC28
private void MakeAnchorSelection(ListBoxItem actionItem, bool clearCurrent)
{
ItemsControl.ItemInfo anchorItemInternal = this.AnchorItemInternal;
if (anchorItemInternal == null)
{
if (this._selectedItems.Count > 0)
{
this.AnchorItemInternal = this._selectedItems[this._selectedItems.Count - 1];
}
else
{
this.AnchorItemInternal = base.NewItemInfo(base.Items[0], null, 0);
}
if ((anchorItemInternal = this.AnchorItemInternal) == null)
{
return;
}
}
int num = this.ElementIndex(actionItem);
int num2 = this.AnchorItemInternal.Index;
if (num > num2)
{
int num3 = num;
num = num2;
num2 = num3;
}
bool flag = false;
if (!base.SelectionChange.IsActive)
{
flag = true;
base.SelectionChange.Begin();
}
try
{
if (clearCurrent)
{
for (int i = 0; i < this._selectedItems.Count; i++)
{
ItemsControl.ItemInfo itemInfo = this._selectedItems[i];
int index = itemInfo.Index;
if (index < num || num2 < index)
{
base.SelectionChange.Unselect(itemInfo);
}
}
}
IEnumerator enumerator = ((IEnumerable)base.Items).GetEnumerator();
for (int j = 0; j <= num2; j++)
{
enumerator.MoveNext();
if (j >= num)
{
base.SelectionChange.Select(base.NewItemInfo(enumerator.Current, null, j), true);
}
}
IDisposable disposable = enumerator as IDisposable;
if (disposable != null)
{
disposable.Dispose();
}
}
finally
{
if (flag)
{
base.SelectionChange.End();
}
}
this.LastActionItem = actionItem;
GC.KeepAlive(anchorItemInternal);
}
// Token: 0x06004728 RID: 18216 RVA: 0x00142617 File Offset: 0x00140817
internal DataGridCellInfo(ItemsControl.ItemInfo info, DataGridColumn column, DataGrid owner)
{
this._info = info;
this._column = column;
this._owner = new WeakReference(owner);
}
