protected virtual ListViewDataItem GetUpperItem(ListViewDataItem currentItem)
{
ListViewTraverser enumerator = this.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
enumerator.Position = (object)currentItem;
int num1 = 0;
while (enumerator.MovePrevious() && enumerator.Current != null && !enumerator.Current.IsLastInRow)
{
num1 += this.GetItemFlowOffset(enumerator.Current);
}
if (!(currentItem is ListViewDataItemGroup) && currentItem != null)
{
num1 += this.GetItemFlowOffset(currentItem) / 2;
}
if (enumerator.Position == null)
{
return((ListViewDataItem)null);
}
do
{
;
}while (enumerator.MovePrevious() && enumerator.Current != null && !enumerator.Current.IsLastInRow);
int num2 = 0;
while (enumerator.MoveNext() && !enumerator.Current.IsLastInRow && num2 + this.GetItemFlowOffset(enumerator.Current) < num1)
{
num2 += this.GetItemFlowOffset(enumerator.Current);
}
return(enumerator.Current);
}
public bool Remove(ListViewDataItem item)
{
ListViewTraverser traverser = this.owner.ViewElement.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
traverser.Position = item;
if (traverser.MovePrevious() && traverser.Current != null && traverser.Current != item)
{
this.owner.SelectedItem = traverser.Current;
}
else
{
traverser.Position = item;
if (traverser.MoveNext() && traverser.Current != item)
{
this.owner.SelectedItem = traverser.Current;
}
else
{
this.owner.SelectedItem = null;
}
}
bool result = this.owner.ListSource.Remove(item);
item.Owner = null;
this.owner.SelectedItems.ProcessSelectedItem(item);
return(result);
}
public override AccessibleObject GetChild(int index)
{
ListViewTraverser enumerator = this.ListView.ListViewElement.ViewElement.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
enumerator.Reset();
int num = -1;
if (this.ListView.ViewType == ListViewType.DetailsView && this.ListView.ShowColumnHeaders)
{
if (index == 0)
{
return((AccessibleObject) new ListViewHeaderRowAccessibleObject((this.listView.ListViewElement.ViewElement as DetailListViewElement).ColumnContainer, this.ListView.ListViewElement));
}
num = 0;
}
while (enumerator.MoveNext())
{
++num;
if (num == index)
{
if (enumerator.Current is ListViewDataItemGroup)
{
return((AccessibleObject) new ListViewDataGroupAccessibleObject(enumerator.Current as ListViewDataItemGroup));
}
if (this.ListView.ViewType == ListViewType.DetailsView)
{
return((AccessibleObject) new ListViewRowAccessibleObject(enumerator.Current));
}
return((AccessibleObject) new ListViewDataItemAccessibleObject(enumerator.Current));
}
}
return((AccessibleObject)null);
}
protected override void ProcessLassoSelection(Rectangle selectionRect)
{
if (!this.Owner.MultiSelect)
{
base.ProcessLassoSelection(selectionRect);
}
else
{
ListViewTraverser enumerator = this.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
int headerHeight = (int)this.Owner.HeaderHeight;
enumerator.Reset();
while (enumerator.MoveNext())
{
if (enumerator.Current.Owner == this.Owner)
{
Rectangle rectangle = new Rectangle(new Point(!this.Owner.ShowGroups || this.Owner.Groups.Count <= 0 || !this.Owner.EnableCustomGrouping && !this.Owner.EnableGrouping ? 0 : this.GroupIndent, headerHeight), enumerator.Current.ActualSize);
if (this.RightToLeft)
{
rectangle = LayoutUtils.RTLTranslateNonRelative(rectangle, this.ViewElement.ControlBoundingRectangle);
}
this.ProcessItemLassoSelection(enumerator.Current, selectionRect.IntersectsWith(rectangle));
headerHeight += enumerator.Current.ActualSize.Height + this.ItemSpacing;
}
}
}
}
protected override void EnsureItemVisibleVerticalCore(ListViewDataItem item)
{
int offset = 0;
int maxHeight = 0;
ListViewTraverser traverser = (ListViewTraverser)this.Scroller.Traverser.GetEnumerator();
BaseListViewVisualItem visualItem = null;
while (traverser.MoveNext())
{
maxHeight = Math.Max(maxHeight, (int)ViewElement.ElementProvider.GetElementSize(traverser.Current).Height + this.ItemSpacing);
if (!traverser.Current.IsLastInRow)
{
continue;
}
this.SetScrollValue(this.VScrollBar, this.VScrollBar.Value + offset);
this.UpdateLayout();
visualItem = this.GetElement(item);
if (visualItem != null)
{
if (visualItem.ControlBoundingRectangle.Bottom > this.ViewElement.ControlBoundingRectangle.Bottom)
{
this.EnsureItemVisible(item);
}
break;
}
offset += maxHeight;
}
}
public bool HasVisibleItems()
{
ListViewTraverser enumerator = this.Data.Owner.ViewElement.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
enumerator.Position = (object)this.Data;
return(enumerator.MoveNext() && !(enumerator.Current is ListViewDataItemGroup));
}
public System.Collections.IEnumerator GetEnumerator()
{
if (enumerator == null)
{
this.enumerator = new ListViewTraverser(this.owner);
}
this.enumerator.Position = this.position;
this.enumerator.currentItemIndex = this.currentItemIndex;
this.enumerator.currentGroupIndex = this.currentGroupIndex;
return(enumerator);
}
protected override void EnsureItemVisibleVerticalCore(ListViewDataItem item)
{
if (this.Orientation == Orientation.Horizontal)
{
this.EnsureItemVisibleHorizontal(item);
}
else
{
int val1 = 0;
BaseListViewVisualItem element1 = this.GetElement(item);
if (element1 == null)
{
this.Scroller.ScrollToItem(item);
this.Scroller.Scrollbar.PerformLargeDecrement(1);
this.ViewElement.UpdateLayout();
element1 = this.GetElement(item);
}
if (element1 != null)
{
if (element1.ControlBoundingRectangle.Bottom <= this.ViewElement.ControlBoundingRectangle.Bottom)
{
return;
}
this.EnsureItemVisible(item);
}
else
{
ListViewTraverser enumerator = (ListViewTraverser)this.Scroller.Traverser.GetEnumerator();
while (enumerator.MoveNext())
{
val1 = Math.Max(val1, (int)this.ViewElement.ElementProvider.GetElementSize(enumerator.Current).Height + this.ItemSpacing);
if (enumerator.Current.IsLastInRow)
{
this.SetScrollValue(this.VScrollBar, this.VScrollBar.Value + val1);
val1 = 0;
this.UpdateLayout();
BaseListViewVisualItem element2 = this.GetElement(item);
if (element2 != null)
{
if (element2.ControlBoundingRectangle.Bottom <= this.ViewElement.ControlBoundingRectangle.Bottom)
{
break;
}
this.EnsureItemVisible(item);
break;
}
}
}
}
}
}
private int GetGroupsHeight()
{
int val1 = 0;
ListViewTraverser enumerator = this.Traverser.GetEnumerator() as ListViewTraverser;
enumerator.Reset();
while (enumerator.MoveNext())
{
if (enumerator.Current is ListViewDataItemGroup)
{
val1 = Math.Max(val1, enumerator.Current.ActualSize.Height);
}
}
return(val1);
}
/// <summary>
/// Gets the next visible item of a given <see cref="ListViewDataItem"/>.
/// </summary>
/// <param name="currentItem">The current item.</param>
/// <returns>The next item.</returns>
protected virtual ListViewDataItem GetNextItem(ListViewDataItem currentItem)
{
ListViewTraverser enumerator = this.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
enumerator.Position = currentItem;
if (enumerator.MoveNext())
{
return(enumerator.Current);
}
else
{
return(null);
}
}
protected virtual ListViewDataItem GetDownerItem(ListViewDataItem currentItem)
{
ListViewTraverser enumerator = this.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
enumerator.Position = currentItem;
int currentItemX = 0;
while (enumerator.MovePrevious() &&
enumerator.Current != null && !enumerator.Current.IsLastInRow)
{
currentItemX += enumerator.Current.ActualSize.Width;
}
if (!(currentItem is ListViewDataItemGroup) && currentItem != null)
{
currentItemX += currentItem.ActualSize.Width / 2;
}
enumerator.Position = currentItem;
while (currentItem != null &&
!currentItem.IsLastInRow &&
enumerator.MoveNext() &&
!enumerator.Current.IsLastInRow)
{
}
int x = 0;
while (enumerator.MoveNext())
{
if (x + enumerator.Current.ActualSize.Width >= currentItemX)
{
return(enumerator.Current);
}
x += enumerator.Current.ActualSize.Width;
if (enumerator.Current.IsLastInRow)
{
break;
}
}
return(null);
}
public override int GetChildCount()
{
if (this.ListView.IsDisposed)
{
return(0);
}
ListViewTraverser enumerator = this.ListView.ListViewElement.ViewElement.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
enumerator.Reset();
int num = 0;
while (enumerator.MoveNext())
{
++num;
}
return(num);
}
private int GetItemIndex(ListViewDataItem item)
{
ListViewTraverser enumerator = (ListViewTraverser)this.Scroller.Traverser.GetEnumerator();
enumerator.Position = null;
int index = 0;
while (enumerator.MoveNext())
{
if (enumerator.Current == item)
{
return(index);
}
index++;
}
return(-1);
}
public bool Remove(ListViewDataItem item)
{
ListViewTraverser enumerator = this.owner.ViewElement.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
enumerator.Position = (object)item;
if (enumerator.MovePrevious() && enumerator.Current != null && enumerator.Current != item)
{
this.owner.SelectedItem = enumerator.Current;
}
else
{
enumerator.Position = (object)item;
this.owner.SelectedItem = !enumerator.MoveNext() || enumerator.Current == item ? (ListViewDataItem)null : enumerator.Current;
}
bool flag = this.owner.ListSource.Remove(item);
item.Owner = (RadListViewElement)null;
this.owner.SelectedItems.ProcessSelectedItem(item);
this.owner.CheckedItems.ProcessCheckedItem(item);
return(flag);
}
/// <summary>
/// Ensures that a given <see cref="ListViewDataItem"/> is visible when it is below the last visible item in the view.
/// </summary>
/// <param name="item">The item to ensure visibility of.</param>
protected virtual void EnsureItemVisibleVerticalCore(ListViewDataItem item)
{
if (item == null)
{
return;
}
bool start = false;
int offset = 0;
ListViewDataItem lastVisible = ((BaseListViewVisualItem)this.ViewElement.Children[this.ViewElement.Children.Count - 1]).Data;
ListViewTraverser traverser = (ListViewTraverser)this.Scroller.Traverser.GetEnumerator();
BaseListViewVisualItem visualItem = null;
while (traverser.MoveNext())
{
if (traverser.Current == item)
{
this.SetScrollValue(this.VScrollBar, this.VScrollBar.Value + offset);
this.UpdateLayout();
visualItem = this.GetElement(item);
if (visualItem != null &&
visualItem.ControlBoundingRectangle.Bottom > this.ViewElement.ControlBoundingRectangle.Bottom)
{
this.EnsureItemVisible(item);
}
break;
}
if (traverser.Current == lastVisible)
{
start = true;
}
if (start)
{
offset += (int)ViewElement.ElementProvider.GetElementSize(traverser.Current).Height + this.ItemSpacing;
}
}
}
protected override void ProcessLassoSelection(Rectangle selectionRect)
{
if (!this.Owner.MultiSelect)
{
base.ProcessLassoSelection(selectionRect);
}
else
{
Rectangle rectangle1 = new Rectangle(this.ViewElement.Padding.Left, this.ViewElement.Padding.Top, this.ViewElement.Size.Width - this.ViewElement.Padding.Horizontal, this.ViewElement.Size.Height - this.ViewElement.Padding.Vertical);
if (this.RightToLeft)
{
rectangle1 = LayoutUtils.RTLTranslateNonRelative(rectangle1, this.ControlBoundingRectangle);
}
selectionRect.Offset(-rectangle1.Location.X, -rectangle1.Location.Y);
ListViewTraverser enumerator = this.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
int x1 = rectangle1.X;
int y = rectangle1.Y;
enumerator.Reset();
int val1_1 = 0;
int val1_2 = 0;
while (enumerator.MoveNext())
{
if (enumerator.Current.Owner == this.Owner)
{
Size actualSize = enumerator.Current.ActualSize;
val1_1 = Math.Max(val1_1, actualSize.Height);
val1_2 = Math.Max(val1_2, actualSize.Width);
if (enumerator.Current is ListViewDataItemGroup)
{
if (x1 != rectangle1.X)
{
int x2 = rectangle1.X;
y += val1_1;
val1_1 = actualSize.Height;
}
x1 = rectangle1.X;
y += actualSize.Height + this.ItemSpacing;
}
else
{
if (x1 + actualSize.Width > rectangle1.Right && this.Orientation == Orientation.Vertical)
{
x1 = rectangle1.X;
y += val1_1 + this.ItemSpacing;
val1_1 = actualSize.Height;
}
else if (y + actualSize.Height > rectangle1.Bottom && this.Orientation == Orientation.Horizontal)
{
y = rectangle1.Y;
x1 += val1_2 + this.ItemSpacing;
val1_2 = actualSize.Width;
}
if (x1 == rectangle1.X && this.Owner.ShowGroups && (this.Owner.EnableCustomGrouping || this.Owner.EnableGrouping) && (this.Owner.Groups.Count > 0 && !this.Owner.FullRowSelect))
{
x1 += this.Owner.GroupIndent;
}
Rectangle rectangle2 = new Rectangle(new Point(x1, y), actualSize);
if (this.RightToLeft)
{
rectangle2 = LayoutUtils.RTLTranslateNonRelative(rectangle2, rectangle1);
}
this.ProcessItemLassoSelection(enumerator.Current, selectionRect.IntersectsWith(rectangle2));
if (this.Orientation == Orientation.Vertical)
{
x1 += actualSize.Width + this.ItemSpacing;
}
else
{
y += actualSize.Height + this.ItemSpacing;
}
}
}
}
}
}
/// <summary>
/// Processes the selection of a specified item.
/// </summary>
/// <param name="item">The <see cref="ListViewDataItem"/> which is being processed.</param>
/// <param name="modifierKeys">The modifier keys which are pressed during selection.</param>
/// <param name="isMouseSelection">[true] if the selection is triggered by mouse input, [false] otherwise.</param>
internal virtual void ProcessSelection(ListViewDataItem item, Keys modifierKeys, bool isMouseSelection)
{
if (item == null)
{
this.ClearSelection();
return;
}
bool isShiftPressed = (modifierKeys & Keys.Shift) == Keys.Shift;
bool isControlPressed = (modifierKeys & Keys.Control) == Keys.Control;
bool clearSelection = this.owner.MultiSelect && ((isShiftPressed && !isControlPressed) || !isControlPressed ||
(!isMouseSelection && !isShiftPressed && !isControlPressed));
if (clearSelection)
{
this.ClearSelection();
}
if (this.owner.MultiSelect)
{
if (isShiftPressed)
{
ListViewTraverser enumerator = this.Scroller.Traverser.GetEnumerator() as ListViewTraverser;
if (enumerator == null)
{
return;
}
ListViewDataItemGroup group = item as ListViewDataItemGroup;
if (group != null)
{
if (group.Items.Count == 0)
{
this.owner.CurrentItem = item;
return;
}
else
{
item = group.Items[group.Items.Count - 1];
}
}
enumerator.Position = null;
bool shouldSelectItem = false;
while (enumerator.MoveNext())
{
if (!shouldSelectItem && (enumerator.Current == item || enumerator.Current == anchor))
{
if (!(enumerator.Current is ListViewDataItemGroup))
{
enumerator.Current.Selected = true;
}
shouldSelectItem = item != anchor;
continue;
}
if (shouldSelectItem && !(enumerator.Current is ListViewDataItemGroup))
{
enumerator.Current.Selected = true;
}
if ((enumerator.Current == item || enumerator.Current == anchor))
{
break;
}
}
this.owner.SetSelectedItem(item);
}
else if (isControlPressed)
{
if (isMouseSelection)
{
item.Selected = !item.Selected;
if (item.Selected)
{
this.owner.SetSelectedItem(item);
}
else
{
this.owner.SetSelectedItem(this.owner.SelectedItems.Count > 0 ?
this.owner.SelectedItems[this.owner.SelectedItems.Count - 1] : null);
}
this.anchor = item;
}
}
else
{
item.Selected = true;
this.owner.SetSelectedItem(item);
this.anchor = item;
}
}
else
{
if (!isControlPressed && !(item is ListViewDataItemGroup))
{
this.ClearSelection();
item.Selected = true;
this.owner.SetSelectedItem(item);
this.anchor = item;
}
}
this.owner.CurrentItem = item;
}
