private void _pictureBox_DragEnter(Object sender, DragEventArgs e)
{
if (NuGenArgument.GetCompatibleDataObjectType(e.Data, typeof(IDescriptor)) != null)
{
e.Effect = DragDropEffects.Copy;
}
}
private void _pictureBox_DragDrop(Object sender, DragEventArgs e)
{
Type descriptorType = NuGenArgument.GetCompatibleDataObjectType(e.Data, typeof(IDescriptor));
IDescriptor descriptor = (IDescriptor)e.Data.GetData(descriptorType);
NodeBase nodeToAdd = descriptor.CreateNode(this);
Point cp = _pictureBox.PointToClient(new Point(e.X, e.Y));
AddNode(nodeToAdd, new Point((Int32)(cp.X / _scale), (Int32)(cp.Y / _scale)));
}
public void GetCompatibleDataObjectTypeInheritanceTest()
{
Assert.AreEqual(
typeof(Button),
NuGenArgument.GetCompatibleDataObjectType(_dataObject, typeof(Control))
);
Assert.IsNull(
NuGenArgument.GetCompatibleDataObjectType(_dataObject, typeof(TextBox))
);
}
public void GetCompatibleDataObjectTypeInterfaceTest()
{
MockDataTarget mockDataTarget = new MockDataTarget();
Assert.AreEqual(
typeof(MockDataTarget),
NuGenArgument.GetCompatibleDataObjectType(new DataObject(mockDataTarget), typeof(IMockDataTarget))
);
Assert.IsNull(
NuGenArgument.GetCompatibleDataObjectType(_dataObject, typeof(IMockObject))
);
}
/*
* OnDragEnter
*/
/// <summary>
/// Raises the <see cref="E:System.Windows.Forms.Control.DragEnter"></see> event.
/// </summary>
/// <param name="e">A <see cref="T:System.Windows.Forms.DragEventArgs"></see> that contains the event data.</param>
protected override void OnDragEnter(DragEventArgs e)
{
if (NuGenArgument.GetCompatibleDataObjectType(e.Data, typeof(NuGenTaskTreeNodeBase)) != null)
{
e.Effect = DragDropEffects.Move;
}
else
{
e.Effect = DragDropEffects.None;
}
base.OnDragEnter(e);
}
public void GetCompatibleDataObjectTypeArgumentNullExceptionOnCompatibleType()
{
NuGenArgument.GetCompatibleDataObjectType(_dataObject, null);
}
public void GetCompatibleDataObjectTypeArgumentNullExceptionOnDataObject()
{
NuGenArgument.GetCompatibleDataObjectType(null, typeof(IMockDataTarget));
}