internal void ProcessDrop(ColumnManagerCell draggedCell)
{
ColumnReorderingDragSourceManager manager = null;
if (draggedCell != null)
{
manager = draggedCell.DragSourceManager as ColumnReorderingDragSourceManager;
}
if ((manager != null) && (manager.IsAnimatedColumnReorderingEnabled))
{
manager.CommitReordering();
}
else
{
int oldPosition = draggedCell.ParentColumn.VisiblePosition;
int newPosition = this.ParentColumn.VisiblePosition;
if (m_dropMarkAdorner != null)
{
DropMarkAlignment alignment = m_dropMarkAdorner.Alignment;
this.HideDropMark();
if (draggedCell.ParentColumn.VisiblePosition < newPosition)
{
if (alignment == DropMarkAlignment.Near)
{
draggedCell.ParentColumn.VisiblePosition = newPosition - 1;
}
else
{
draggedCell.ParentColumn.VisiblePosition = newPosition;
}
}
else
{
if (alignment == DropMarkAlignment.Near)
{
draggedCell.ParentColumn.VisiblePosition = newPosition;
}
else
{
draggedCell.ParentColumn.VisiblePosition = newPosition + 1;
}
}
// This will force every Rows to update there layout
ColumnReorderingEventArgs e = new ColumnReorderingEventArgs(ColumnManagerCell.ColumnReorderingEvent, oldPosition, newPosition);
this.RaiseEvent(e);
}
}
}
private void ShowDropMark(Point mousePosition, DropMarkAlignment defaultAlignment, bool forceDefaultAlignment)
{
if (m_dropMarkAdorner == null)
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
DataGridControl grid = (dataGridContext != null)
? dataGridContext.DataGridControl
: null;
Pen pen = UIViewBase.GetDropMarkPen(this);
if ((pen == null) && (grid != null))
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
pen = uiViewBase.DefaultDropMarkPen;
}
DropMarkOrientation orientation = Nequeo.Wpf.DataGrid.Views.UIViewBase.GetDropMarkOrientation(this);
if ((orientation == DropMarkOrientation.Default) && (grid != null))
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
orientation = uiViewBase.DefaultDropMarkOrientation;
}
m_dropMarkAdorner = new DropMarkAdorner(this, pen, orientation);
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
if (adornerLayer != null)
{
adornerLayer.Add(m_dropMarkAdorner);
}
}
if (forceDefaultAlignment)
{
m_dropMarkAdorner.ForceAlignment(defaultAlignment);
}
else
{
m_dropMarkAdorner.UpdateAlignment(mousePosition);
}
}
void IDropTarget.Drop(UIElement draggedElement)
{
if (m_dropMarkAdorner != null)
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
Debug.Assert(dataGridContext != null);
if (dataGridContext != null)
{
GroupLevelDescription draggedOverGroupLevelDescription = this.Content as GroupLevelDescription;
Debug.Assert(draggedOverGroupLevelDescription != null);
if (draggedOverGroupLevelDescription != null)
{
DropMarkAlignment alignment = m_dropMarkAdorner.Alignment;
this.HideDropMark();
ColumnManagerCell draggedCell = draggedElement as ColumnManagerCell;
if (draggedCell != null)
{
GroupingHelper.AddNewGroupFromColumnManagerCell(draggedCell, draggedOverGroupLevelDescription, alignment, dataGridContext.DataGridControl);
}
else
{
GroupByItem draggedGroupBy = draggedElement as GroupByItem;
Debug.Assert(draggedGroupBy != null);
if (draggedGroupBy != null)
{
GroupLevelDescription draggedGroupLevelDescription = draggedGroupBy.Content as GroupLevelDescription;
GroupingHelper.MoveGroupDescription(dataGridContext.Columns, dataGridContext.Items.GroupDescriptions, draggedOverGroupLevelDescription, alignment, draggedGroupLevelDescription, dataGridContext.DataGridControl);
}
}
}
}
}
}
public void UpdateAlignment(Point mousePosition)
{
DropMarkAlignment alignment = DropMarkAlignment.Near;
if (m_orientation == DropMarkOrientation.Horizontal)
{
// A horizontal drop mark is either displayed at the top or at the bottom of the AdornedElement.
Rect hitTestRect = new Rect(0d, 0d, this.AdornedElement.RenderSize.Width, this.AdornedElement.RenderSize.Height / 2);
if (hitTestRect.Contains(mousePosition))
{
alignment = DropMarkAlignment.Near;
}
else
{
alignment = DropMarkAlignment.Far;
}
}
else
{
// A vertical drop mark is either displayed at the left or at the right of the AdornedElement.
Rect hitTestRect = new Rect(0d, 0d, this.AdornedElement.RenderSize.Width / 2, this.AdornedElement.RenderSize.Height);
if (hitTestRect.Contains(mousePosition))
{
alignment = DropMarkAlignment.Near;
}
else
{
alignment = DropMarkAlignment.Far;
}
}
if (alignment != m_alignment)
{
m_alignment = alignment;
this.UpdatePosition();
}
}
void IDropTarget.Drop(UIElement draggedElement)
{
ColumnManagerCell draggedColumnManagerCell = draggedElement as ColumnManagerCell;
if (m_dropMarkAdorner != null)
{
GroupLevelDescription draggedOverGroupLevelDescription = this.Content as GroupLevelDescription;
DropMarkAlignment alignment = m_dropMarkAdorner.Alignment;
this.HideDropMark();
if (draggedColumnManagerCell != null)
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
DataGridControl parentGrid = (dataGridContext != null)
? dataGridContext.DataGridControl
: null;
GroupingHelper.AddNewGroupFromColumnManagerCell(draggedColumnManagerCell, draggedOverGroupLevelDescription, alignment, parentGrid);
}
else
{
HierarchicalGroupByItem draggedGroupByItem = draggedElement as HierarchicalGroupByItem;
if (draggedGroupByItem == null)
{
return;
}
GroupLevelDescription draggedGroupLevelDescription = draggedGroupByItem.Content as GroupLevelDescription;
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
DataGridControl parentDataGridControl = (dataGridContext != null)
? dataGridContext.DataGridControl
: null;
GroupLevelDescription destinationGroupLevelDescription = this.Content as GroupLevelDescription;
GroupingHelper.MoveGroupDescription(this.ParentColumns, this.ParentGroupDescriptions,
destinationGroupLevelDescription, alignment,
draggedGroupLevelDescription, parentDataGridControl);
}
}
else
{
// We try to add a new Group which is not in the current GroupLevelDescriptions
if (draggedColumnManagerCell == null)
{
return;
}
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(this);
DataGridControl parentGrid = (dataGridContext != null)
? dataGridContext.DataGridControl
: null;
GroupingHelper.AppendNewGroupFromColumnManagerCell(draggedColumnManagerCell, parentGrid);
}
HierarchicalGroupByControl parentGBC = GroupingHelper.GetHierarchicalGroupByControl(this);
Debug.Assert(parentGBC != null);
if (parentGBC == null)
{
throw new DataGridInternalException("A hierarchical group-by item must be rooted by a HierarchicalGroupByControl.");
}
// Notify groups have changed for NoGroupContent
parentGBC.UpdateHasGroups();
}
public static void MoveGroupDescription(ColumnCollection targetColumns, ObservableCollection <GroupDescription> targetGroupDescriptions, GroupLevelDescription targetGroupLevelDescription, DropMarkAlignment targetAlignment, GroupLevelDescription movedGroupLevelDescription, DataGridControl parentDataGridControl)
{
Debug.Assert(targetColumns != null);
Debug.Assert(targetGroupDescriptions != null);
Debug.Assert(targetGroupLevelDescription != null);
Debug.Assert(movedGroupLevelDescription != null);
if ((parentDataGridControl == null) ||
(targetColumns == null) ||
(targetGroupDescriptions == null) ||
(targetGroupLevelDescription == null) ||
(movedGroupLevelDescription == null))
{
return;
}
int oldPos = GroupingHelper.GetGroupDescriptionIndex(targetGroupDescriptions, movedGroupLevelDescription, DropMarkAlignment.Near);
int newPos = GroupingHelper.GetGroupDescriptionIndex(targetGroupDescriptions, targetGroupLevelDescription, targetAlignment);
if (newPos > oldPos)
{
newPos--;
}
if (newPos != oldPos)
{
Debug.Assert(oldPos < targetGroupDescriptions.Count);
targetGroupDescriptions.Move(oldPos, newPos);
}
}
public static void AddNewGroupFromColumnManagerCell(ColumnManagerCell cell, GroupLevelDescription draggedOverDescription, DropMarkAlignment alignment, DataGridControl parentDataGridControl)
{
if (cell == null)
{
return;
}
DataGridContext cellDataGridContext = DataGridControl.GetDataGridContext(cell);
DataGridControl cellParentGrid = cellDataGridContext.DataGridControl;
if ((cellDataGridContext == null) ||
(parentDataGridControl == null) ||
(parentDataGridControl != cellParentGrid))
{
return;
}
// By default, add it at the end
int newPos = cellDataGridContext.GroupLevelDescriptions.Count;
if (draggedOverDescription != null)
{
newPos = GroupingHelper.GetGroupDescriptionIndexFromFieldName(cellDataGridContext, draggedOverDescription.FieldName, alignment);
}
ColumnBase column = cell.ParentColumn;
if (column != null)
{
GroupingHelper.AddNewGroupFromColumn(column, cellDataGridContext.Items.GroupDescriptions, newPos);
}
}
public static void MoveGroupDescription( ColumnCollection targetColumns, ObservableCollection<GroupDescription> targetGroupDescriptions, GroupLevelDescription targetGroupLevelDescription, DropMarkAlignment targetAlignment, GroupLevelDescription movedGroupLevelDescription, DataGridControl parentDataGridControl )
{
Debug.Assert( targetColumns != null );
Debug.Assert( targetGroupDescriptions != null );
Debug.Assert( targetGroupLevelDescription != null );
Debug.Assert( movedGroupLevelDescription != null );
if( ( parentDataGridControl == null ) ||
( targetColumns == null ) ||
( targetGroupDescriptions == null ) ||
( targetGroupLevelDescription == null ) ||
( movedGroupLevelDescription == null ) )
return;
int oldPos = GroupingHelper.GetGroupDescriptionIndex( targetGroupDescriptions, movedGroupLevelDescription, DropMarkAlignment.Near );
int newPos = GroupingHelper.GetGroupDescriptionIndex( targetGroupDescriptions, targetGroupLevelDescription, targetAlignment );
if( newPos > oldPos )
newPos--;
if( newPos != oldPos )
{
Debug.Assert( oldPos < targetGroupDescriptions.Count );
targetGroupDescriptions.Move( oldPos, newPos );
}
}
public static void AddNewGroupFromColumnManagerCell(ColumnManagerCell cell, GroupLevelDescription draggedOverDescription, DropMarkAlignment alignment, DataGridControl parentDataGridControl)
{
if (cell == null)
{
return;
}
DataGridContext dataGridContext = DataGridControl.GetDataGridContext(cell);
ColumnBase column = cell.ParentColumn;
if ((dataGridContext == null) ||
(parentDataGridControl == null) ||
(column == null) ||
(parentDataGridControl != dataGridContext.DataGridControl))
{
return;
}
var addGroupCommand = dataGridContext.AddGroupCommand;
if (draggedOverDescription != null)
{
var position = GroupingHelper.GetGroupDescriptionIndexFromFieldName(dataGridContext, draggedOverDescription.FieldName, alignment);
if (addGroupCommand.CanExecute(column, position))
{
addGroupCommand.Execute(column, position);
}
}
else
{
if (addGroupCommand.CanExecute(column))
{
addGroupCommand.Execute(column);
}
}
}
public void ForceAlignment(DropMarkAlignment alignment)
{
m_alignment = alignment;
}
public static int GetGroupDescriptionIndex( ObservableCollection<GroupDescription> groupDescriptions, GroupLevelDescription groupLevelDescription, DropMarkAlignment alignment )
{
int groupIndex = groupDescriptions.IndexOf( groupLevelDescription.GroupDescription );
if( groupIndex > -1 )
{
if( alignment == DropMarkAlignment.Far )
groupIndex++;
return groupIndex;
}
else
{
// return the size of the Collection if not found
return groupDescriptions.Count;
}
}
public static void MoveGroupDescription( ColumnCollection targetColumns, ObservableCollection<GroupDescription> targetGroupDescriptions, GroupLevelDescription targetGroupLevelDescription, DropMarkAlignment targetAlignment, GroupLevelDescription movedGroupLevelDescription, DataGridControl parentDataGridControl )
{
Debug.Assert( targetColumns != null );
Debug.Assert( targetGroupDescriptions != null );
Debug.Assert( targetGroupLevelDescription != null );
Debug.Assert( movedGroupLevelDescription != null );
if( ( parentDataGridControl == null ) ||
( targetColumns == null ) ||
( targetGroupDescriptions == null ) ||
( targetGroupLevelDescription == null ) ||
( movedGroupLevelDescription == null ) )
return;
int oldPos = GroupingHelper.GetGroupDescriptionIndex( targetGroupDescriptions, movedGroupLevelDescription, DropMarkAlignment.Near );
int newPos = GroupingHelper.GetGroupDescriptionIndex( targetGroupDescriptions, targetGroupLevelDescription, targetAlignment );
if( newPos > oldPos )
{
newPos--;
}
if( newPos != oldPos )
{
Debug.Assert( oldPos < targetGroupDescriptions.Count );
using( parentDataGridControl.SetQueueBringIntoViewRestrictions( AutoScrollCurrentItemSourceTriggers.CollectionViewCurrentItemChanged ) )
{
targetGroupDescriptions.Move( oldPos, newPos );
}
}
}
public static void AddNewGroupFromColumnManagerCell( ColumnManagerCell cell, GroupLevelDescription draggedOverDescription, DropMarkAlignment alignment, DataGridControl parentDataGridControl )
{
if( cell == null )
return;
DataGridContext dataGridContext = DataGridControl.GetDataGridContext( cell );
ColumnBase column = cell.ParentColumn;
if( ( dataGridContext == null ) ||
( parentDataGridControl == null ) ||
( column == null ) ||
( parentDataGridControl != dataGridContext.DataGridControl ) )
return;
var addGroupCommand = dataGridContext.AddGroupCommand;
if( draggedOverDescription != null )
{
var position = GroupingHelper.GetGroupDescriptionIndexFromFieldName( dataGridContext, draggedOverDescription.FieldName, alignment );
if( addGroupCommand.CanExecute( column, position ) )
{
addGroupCommand.Execute( column, position );
}
}
else
{
if( addGroupCommand.CanExecute( column ) )
{
addGroupCommand.Execute( column );
}
}
}
public static int GetGroupDescriptionIndexFromFieldName( DataGridContext dataGridContext, string fieldName, DropMarkAlignment alignment )
{
ObservableCollection<GroupDescription> groupDescriptions = dataGridContext.Items.GroupDescriptions;
for( int i = groupDescriptions.Count - 1; i >= 0; i-- )
{
if( DataGridContext.GetColumnNameFromGroupDescription( groupDescriptions[ i ] ) == fieldName )
{
if( alignment == DropMarkAlignment.Far )
i++;
return i;
}
}
return dataGridContext.Items.GroupDescriptions.Count;
}
private void ShowDropMark( Point mousePosition, DropMarkAlignment defaultAlignment, bool forceDefaultAlignment )
{
if( m_dropMarkAdorner == null )
{
DataGridContext dataGridContext = DataGridControl.GetDataGridContext( this );
DataGridControl grid = ( dataGridContext != null )
? dataGridContext.DataGridControl
: null;
Pen pen = UIViewBase.GetDropMarkPen( this );
if( ( pen == null ) && ( grid != null ) )
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
pen = uiViewBase.DefaultDropMarkPen;
}
DropMarkOrientation orientation = Xceed.Wpf.DataGrid.Views.UIViewBase.GetDropMarkOrientation( this );
if( ( orientation == DropMarkOrientation.Default ) && ( grid != null ) )
{
UIViewBase uiViewBase = grid.GetView() as UIViewBase;
orientation = uiViewBase.DefaultDropMarkOrientation;
}
m_dropMarkAdorner = new DropMarkAdorner( this, pen, orientation );
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer( this );
if( adornerLayer != null )
adornerLayer.Add( m_dropMarkAdorner );
}
if( forceDefaultAlignment )
{
m_dropMarkAdorner.ForceAlignment( defaultAlignment );
}
else
{
m_dropMarkAdorner.UpdateAlignment( mousePosition );
}
}
public static int GetGroupDescriptionIndex(ObservableCollection <GroupDescription> groupDescriptions, GroupLevelDescription groupLevelDescription, DropMarkAlignment alignment)
{
int groupIndex = groupDescriptions.IndexOf(groupLevelDescription.GroupDescription);
if (groupIndex > -1)
{
if (alignment == DropMarkAlignment.Far)
{
groupIndex++;
}
return(groupIndex);
}
else
{
// return the size of the Collection if not found
return(groupDescriptions.Count);
}
}
public static int GetGroupDescriptionIndexFromFieldName(DataGridContext dataGridContext, string fieldName, DropMarkAlignment alignment)
{
ObservableCollection <GroupDescription> groupDescriptions = dataGridContext.Items.GroupDescriptions;
for (int i = groupDescriptions.Count - 1; i >= 0; i--)
{
if (DataGridContext.GetColumnNameFromGroupDescription(groupDescriptions[i]) == fieldName)
{
if (alignment == DropMarkAlignment.Far)
{
i++;
}
return(i);
}
}
return(dataGridContext.Items.GroupDescriptions.Count);
}
public void ForceAlignment( DropMarkAlignment alignment )
{
m_alignment = alignment;
}
public static void MoveGroupDescription(ColumnCollection targetColumns, ObservableCollection <GroupDescription> targetGroupDescriptions, GroupLevelDescription targetGroupLevelDescription, DropMarkAlignment targetAlignment, GroupLevelDescription movedGroupLevelDescription, DataGridControl parentDataGridControl)
{
Debug.Assert(targetColumns != null);
Debug.Assert(targetGroupDescriptions != null);
Debug.Assert(targetGroupLevelDescription != null);
Debug.Assert(movedGroupLevelDescription != null);
if ((parentDataGridControl == null) ||
(targetColumns == null) ||
(targetGroupDescriptions == null) ||
(targetGroupLevelDescription == null) ||
(movedGroupLevelDescription == null))
{
return;
}
int oldPos = GroupingHelper.GetGroupDescriptionIndex(targetGroupDescriptions, movedGroupLevelDescription, DropMarkAlignment.Near);
int newPos = GroupingHelper.GetGroupDescriptionIndex(targetGroupDescriptions, targetGroupLevelDescription, targetAlignment);
if (newPos > oldPos)
{
newPos--;
}
if (newPos != oldPos)
{
Debug.Assert(oldPos < targetGroupDescriptions.Count);
using (parentDataGridControl.SetQueueBringIntoViewRestrictions(AutoScrollCurrentItemSourceTriggers.CollectionViewCurrentItemChanged))
{
targetGroupDescriptions.Move(oldPos, newPos);
}
}
}
public static void AddNewGroupFromColumnManagerCell( ColumnManagerCell cell, GroupLevelDescription draggedOverDescription, DropMarkAlignment alignment, DataGridControl parentDataGridControl )
{
if( cell == null )
return;
DataGridContext cellDataGridContext = DataGridControl.GetDataGridContext( cell );
DataGridControl cellParentGrid = cellDataGridContext.DataGridControl;
if( ( cellDataGridContext == null ) ||
( parentDataGridControl == null ) ||
( parentDataGridControl != cellParentGrid ) )
return;
// By default, add it at the end
int newPos = cellDataGridContext.GroupLevelDescriptions.Count;
if( draggedOverDescription != null )
newPos = GroupingHelper.GetGroupDescriptionIndexFromFieldName( cellDataGridContext, draggedOverDescription.FieldName, alignment );
ColumnBase column = cell.ParentColumn;
if( column != null )
{
GroupingHelper.AddNewGroupFromColumn( column, cellDataGridContext.Items.GroupDescriptions, newPos );
}
}
