public void DoOleDragDrop(DragEventArgs de)
{
// ASURT 43757: By the time we come here, it means that the user completed the drag-drop and
// we compute the new location/size of the controls if needed and set the property values.
// We have to stop freezePainting right here, so that controls can get a chance to validate
// their new rects.
//
freezePainting = false;
if (selectionHandler == null)
{
Debug.Fail("selectionHandler should not be null");
de.Effect = DragDropEffects.None;
return;
}
// make sure we've actually moved
if ((localDrag && de.X == dragBase.X && de.Y == dragBase.Y) ||
de.AllowedEffect == DragDropEffects.None ||
(!localDrag && !dragOk))
{
de.Effect = DragDropEffects.None;
return;
}
bool localMoveOnly = ((int)de.AllowedEffect & AllowLocalMoveOnly) != 0 && localDragInside;
// if we are dragging inside the local dropsource/target, and and AllowLocalMoveOnly flag is set,
// we just consider this a normal move.
//
bool moveAllowed = (de.AllowedEffect & DragDropEffects.Move) != DragDropEffects.None || localMoveOnly;
bool copyAllowed = (de.AllowedEffect & DragDropEffects.Copy) != DragDropEffects.None;
if ((de.Effect & DragDropEffects.Move) != 0 && !moveAllowed)
{
// Try copy instead?
de.Effect = DragDropEffects.Copy;
}
// make sure the copy is allowed
if ((de.Effect & DragDropEffects.Copy) != 0 && !copyAllowed)
{
// if copy isn't allowed, don't do anything
de.Effect = DragDropEffects.None;
return;
}
if (localMoveOnly && (de.Effect & DragDropEffects.Move) != 0)
{
de.Effect |= (DragDropEffects)AllowLocalMoveOnly | DragDropEffects.Move;
}
else if ((de.Effect & DragDropEffects.Copy) != 0)
{
de.Effect = DragDropEffects.Copy;
}
if (forceDrawFrames || localDragInside)
{
// undraw the drag rect
localDragOffset = DrawDragFrames(dragComps, localDragOffset, localDragEffect,
Point.Empty, DragDropEffects.None, forceDrawFrames);
forceDrawFrames = false;
}
Cursor oldCursor = Cursor.Current;
try
{
Cursor.Current = Cursors.WaitCursor;
if (dragOk || (localDragInside && de.Effect == DragDropEffects.Copy))
{
// add em to this parent.
IDesignerHost host = (IDesignerHost)GetService(typeof(IDesignerHost));
IContainer container = host.RootComponent.Site.Container;
object[] components;
IDataObject dataObj = de.Data;
bool updateLocation = false;
if (dataObj is ComponentDataObjectWrapper)
{
dataObj = ((ComponentDataObjectWrapper)dataObj).InnerData;
ComponentDataObject cdo = (ComponentDataObject)dataObj;
// if we're moving ot a different container, do a full serialization
// to make sure we pick up design time props, etc.
//
IComponent dragOwner = GetDragOwnerComponent(de.Data);
bool newContainer = dragOwner == null || client.Component == null || dragOwner.Site.Container != client.Component.Site.Container;
bool collapseChildren = false;
if (de.Effect == DragDropEffects.Copy || newContainer)
{
// this causes new elements to be created
//
cdo.Deserialize(serviceProvider, (de.Effect & DragDropEffects.Copy) == 0);
}
else
{
collapseChildren = true;
}
updateLocation = true;
components = cdo.Components;
if (collapseChildren)
{
components = GetTopLevelComponents(components);
}
}
else
{
object serializationData = dataObj.GetData(DataFormat, true);
if (serializationData == null)
{
Debug.Fail("data object didn't return any data, so how did we allow the drop?");
components = Array.Empty <IComponent>();
}
else
{
dataObj = new ComponentDataObject(client, serviceProvider, serializationData);
components = ((ComponentDataObject)dataObj).Components;
updateLocation = true;
}
}
// now we need to offset the components locations from the drop mouse
// point to the parent, since their current locations are relative
// the the mouse pointer
if (components != null && components.Length > 0)
{
Debug.Assert(container != null, "Didn't get a container from the site!");
string name;
IComponent comp = null;
DesignerTransaction trans = null;
try
{
trans = host.CreateTransaction(SR.DragDropDropComponents);
if (!localDrag)
{
host.Activate();
}
ArrayList selectComps = new ArrayList();
for (int i = 0; i < components.Length; i++)
{
comp = components[i] as IComponent;
if (comp == null)
{
comp = null;
continue;
}
try
{
name = null;
if (comp.Site != null)
{
name = comp.Site.Name;
}
Control oldDesignerControl = null;
if (updateLocation)
{
oldDesignerControl = client.GetDesignerControl();
User32.SendMessageW(oldDesignerControl.Handle, User32.WM.SETREDRAW);
}
Point dropPt = client.GetDesignerControl().PointToClient(new Point(de.X, de.Y));
// First check if the component we are dropping have a TrayLocation, and if so, use it
PropertyDescriptor loc = TypeDescriptor.GetProperties(comp)["TrayLocation"];
if (loc == null)
{
// it didn't, so let's check for the regular Location
loc = TypeDescriptor.GetProperties(comp)["Location"];
}
if (loc != null && !loc.IsReadOnly)
{
Rectangle bounds = new Rectangle();
Point pt = (Point)loc.GetValue(comp);
bounds.X = dropPt.X + pt.X;
bounds.Y = dropPt.Y + pt.Y;
bounds = selectionHandler.GetUpdatedRect(Rectangle.Empty, bounds, false);
}
if (!client.AddComponent(comp, name, false))
{
// this means that we just moved the control
// around in the same designer.
de.Effect = DragDropEffects.None;
}
else
{
// make sure the component was added to this client
if (client.GetControlForComponent(comp) == null)
{
updateLocation = false;
}
}
if (updateLocation)
{
ParentControlDesigner parentDesigner = client as ParentControlDesigner;
if (parentDesigner != null)
{
Control c = client.GetControlForComponent(comp);
dropPt = parentDesigner.GetSnappedPoint(c.Location);
c.Location = dropPt;
}
}
if (oldDesignerControl != null)
{
//((ComponentDataObject)dataObj).ShowControls();
User32.SendMessageW(oldDesignerControl.Handle, User32.WM.SETREDRAW, (IntPtr)1);
oldDesignerControl.Invalidate(true);
}
if (TypeDescriptor.GetAttributes(comp).Contains(DesignTimeVisibleAttribute.Yes))
{
selectComps.Add(comp);
}
}
catch (CheckoutException ceex)
{
if (ceex == CheckoutException.Canceled)
{
break;
}
throw;
}
}
if (host != null)
{
host.Activate();
}
// select the newly added components
ISelectionService selService = (ISelectionService)GetService(typeof(ISelectionService));
selService.SetSelectedComponents((object[])selectComps.ToArray(typeof(IComponent)), SelectionTypes.Replace);
localDragInside = false;
}
finally
{
if (trans != null)
{
trans.Commit();
}
}
}
}
if (localDragInside)
{
ISelectionUIService selectionUISvc = (ISelectionUIService)GetService(typeof(ISelectionUIService));
Debug.Assert(selectionUISvc != null, "Unable to get selection ui service when adding child control");
if (selectionUISvc != null)
{
// We must check to ensure that UI service is still in drag mode. It is
// possible that the user hit escape, which will cancel drag mode.
//
if (selectionUISvc.Dragging && moveAllowed)
{
Rectangle offset = new Rectangle(de.X - dragBase.X, de.Y - dragBase.Y, 0, 0);
selectionUISvc.DragMoved(offset);
}
}
}
dragOk = false;
}
finally
{
Cursor.Current = oldCursor;
}
}
/// <include file='doc\ControlCommandSet.uex' path='docs/doc[@for="ControlCommandSet.OnKeySize"]/*' />
/// <devdoc>
/// Called for the various sizing commands we support.
/// </devdoc>
protected void OnKeySize(object sender, EventArgs e)
{
// Arrow keys. Begin a drag if the selection isn't locked.
//
ISelectionService selSvc = SelectionService;
ISelectionUIService uiSvc = SelectionUIService;
if (uiSvc != null && selSvc != null)
{
//added to remove the selection rectangle: bug(54692)
//
uiSvc.Visible = false;
object comp = selSvc.PrimarySelection;
if (comp != null && comp is IComponent)
{
PropertyDescriptor lockedProp = TypeDescriptor.GetProperties(comp)["Locked"];
if (lockedProp == null || (lockedProp.PropertyType == typeof(bool) && ((bool)lockedProp.GetValue(comp))) == false)
{
SelectionRules rules = SelectionRules.Visible;
CommandID cmd = ((MenuCommand)sender).CommandID;
bool invertSnap = false;
int moveOffsetX = 0;
int moveOffsetY = 0;
if (cmd.Equals(MenuCommands.KeySizeHeightDecrease))
{
moveOffsetY = -1;
rules |= SelectionRules.BottomSizeable;
}
else if (cmd.Equals(MenuCommands.KeySizeHeightIncrease))
{
moveOffsetY = 1;
rules |= SelectionRules.BottomSizeable;
}
else if (cmd.Equals(MenuCommands.KeySizeWidthDecrease))
{
moveOffsetX = -1;
rules |= SelectionRules.RightSizeable;
}
else if (cmd.Equals(MenuCommands.KeySizeWidthIncrease))
{
moveOffsetX = 1;
rules |= SelectionRules.RightSizeable;
}
else if (cmd.Equals(MenuCommands.KeyNudgeHeightDecrease))
{
moveOffsetY = -1;
invertSnap = true;
rules |= SelectionRules.BottomSizeable;
}
else if (cmd.Equals(MenuCommands.KeyNudgeHeightIncrease))
{
moveOffsetY = 1;
invertSnap = true;
rules |= SelectionRules.BottomSizeable;
}
else if (cmd.Equals(MenuCommands.KeyNudgeWidthDecrease))
{
moveOffsetX = -1;
invertSnap = true;
rules |= SelectionRules.RightSizeable;
}
else if (cmd.Equals(MenuCommands.KeyNudgeWidthIncrease))
{
moveOffsetX = 1;
invertSnap = true;
rules |= SelectionRules.RightSizeable;
}
else
{
Debug.Fail("Unknown command mapped to OnKeySize: " + cmd.ToString());
}
if (uiSvc.BeginDrag(rules, 0, 0))
{
bool snapOn = false;
Size snapSize = Size.Empty;
IComponent snapComponent = null;
PropertyDescriptor snapProperty = null;
// Gets the needed snap information
//
IDesignerHost host = (IDesignerHost)GetService(typeof(IDesignerHost));
DesignerTransaction trans = null;
try {
if (host != null)
{
GetSnapInformation(host, (IComponent)comp, out snapSize, out snapComponent, out snapProperty);
if (selSvc.SelectionCount > 1)
{
trans = host.CreateTransaction(SR.GetString(SR.DragDropSizeComponents, selSvc.SelectionCount));
}
else
{
trans = host.CreateTransaction(SR.GetString(SR.DragDropSizeComponent, ((IComponent)comp).Site.Name));
}
if (snapProperty != null)
{
snapOn = (bool)snapProperty.GetValue(snapComponent);
if (invertSnap)
{
snapOn = !snapOn;
snapProperty.SetValue(snapComponent, snapOn);
}
}
}
if (snapOn && !snapSize.IsEmpty)
{
moveOffsetX *= snapSize.Width;
moveOffsetY *= snapSize.Height;
}
// Now move the controls the correct # of pixels.
//
uiSvc.DragMoved(new Rectangle(0, 0, moveOffsetX, moveOffsetY));
uiSvc.EndDrag(false);
if (host != null)
{
if (invertSnap && snapProperty != null)
{
snapOn = !snapOn;
snapProperty.SetValue(snapComponent, snapOn);
}
}
}
finally {
if (trans != null)
{
trans.Commit();
uiSvc.Visible = true;
}
}
}
}
}
uiSvc.Visible = true;
}
}
