/// <summary>
/// Selects the item sent as a parameter
/// </summary>
/// <param name="element">Item to select</param>
private void SelectElement(GraphElement element)
{
//The item is selected
element.Selected = true;
//The element is loaded into the temporary layer
this.selectLayer.AddElement(element);
if (GraphDiagram.ValidateCopy(this.selectLayer.Elements))
{
this.miCopy.Enabled = true;
this.miCut.Enabled = true;
}
else
{
if (this.OperationDisabled != null)
{
this.OperationDisabled(this, new OperationEventArgs(Operation.Copy));
this.OperationDisabled(this, new OperationEventArgs(Operation.Cut));
}
this.miCopy.Enabled = false;
this.miCut.Enabled = false;
}
if (GraphDiagram.ValidateDelete(this.selectLayer.Elements))
{
this.miRemove.Enabled = true;
}
else
{
if (this.OperationDisabled != null)
{
this.OperationDisabled(this, new OperationEventArgs(Operation.Delete));
}
this.miRemove.Enabled = false;
}
if (GraphDiagram.ValidateSettings(this.selectLayer.Elements))
{
this.miSettings.Enabled = true;
}
else
{
if (this.OperationDisabled != null)
{
this.OperationDisabled(this, new OperationEventArgs(Operation.Settings));
}
this.miSettings.Enabled = false;
}
}
public void MouseUp(MouseEventArgs e)
{
//When the left mouse button is released...
if (e.Button == MouseButtons.Left)
{
//You get the upper left point of the selection box and the size
Point location = new Point(Math.Min(this.initialPoint.X, e.X), Math.Min(this.initialPoint.Y, e.Y));
Size size = new Size(Math.Abs(e.X - this.initialPoint.X), Math.Abs(e.Y - this.initialPoint.Y));
//A Rectangle object is created that contains the two informations
Rectangle rectangle = new Rectangle(location, size);
//The items inside the selection box are selected
this.SelectElements(rectangle);
//The chart selection box is deleted
this.tempLayer.ClearAndHide();
this.selectionRectangle.Dispose();
//The temporary layer is updated
this.tempLayer.UpdateSurface();
if (GraphDiagram.ValidateCopy(this.selectLayer.Elements))
{
}
else
{
if (this.OperationDisabled != null)
{
this.OperationDisabled(this, new OperationEventArgs(Operation.Copy));
this.OperationDisabled(this, new OperationEventArgs(Operation.Cut));
}
}
if (GraphDiagram.ValidateDelete(this.selectLayer.Elements))
{
}
else
{
if (this.OperationDisabled != null)
{
this.OperationDisabled(this, new OperationEventArgs(Operation.Delete));
}
}
if (GraphDiagram.ValidateSettings(this.selectLayer.Elements))
{
}
else
{
if (this.OperationDisabled != null)
{
this.OperationDisabled(this, new OperationEventArgs(Operation.Settings));
}
}
//Exception is thrown for change of operation depending on whether there are selected items
if (this.selectLayer.Elements.Count == 0)
{
this.selectLayer.Visible = false;
throw new OperationException(Operation.SelectRectangle, "Change to Nop Operation");
}
else
{
if (this.ElementSelectedChanged != null)
{
this.ElementSelectedChanged(this, new EventArgs());
}
throw new OperationException(Operation.SelectRectangle, "Change to Select Operation");
}
}
}
