private WizardStepDesigner GetWizardStepDesigner(IComponent step)
{
IDesignerHost service = (IDesignerHost)this.GetService(typeof(IDesignerHost));
WizardStepDesigner designer = null;
if (service == null)
{
return(designer);
}
designer = (WizardStepDesigner)service.GetDesigner(step);
return(designer);
}
///<summary>
///Called when a drag-and-drop operation leaves the control designer view.
///</summary>
///
///<param name="e">An <see cref="T:System.EventArgs"></see> that provides data for the event. </param>
protected override void OnDragLeave(EventArgs e)
{
if (this.forwardOnDrag)
{
this.forwardOnDrag = false;
WizardStepDesigner currentWizardStepDesigner = this.GetDesigner();
if (currentWizardStepDesigner == null)
{
return;
}
currentWizardStepDesigner.OnDragLeaveInternal(e);
return;
}
base.OnDragLeave(e);
}
///<summary>
///Receives a call when a drag-and-drop operation is in progress to provide visual cues based on the location of the mouse while a drag operation is in progress.
///</summary>
///
///<param name="e">A <see cref="T:System.Windows.Forms.GiveFeedbackEventArgs"></see> that provides data for the event. </param>
protected override void OnGiveFeedback(GiveFeedbackEventArgs e)
{
if (this.forwardOnDrag)
{
WizardStepDesigner currentWizardStepDesigner = this.GetDesigner();
if (currentWizardStepDesigner == null)
{
return;
}
currentWizardStepDesigner.OnGiveFeedbackInternal(e);
}
else
{
base.OnGiveFeedback(e);
}
}
///<summary>
///Called when a drag-and-drop object is dropped onto the control designer view.
///</summary>
///
///<param name="de">A <see cref="T:System.Windows.Forms.DragEventArgs"></see> that provides data for the event. </param>
protected override void OnDragDrop(DragEventArgs de)
{
if (this.forwardOnDrag)
{
this.forwardOnDrag = false;
WizardStepDesigner currentWizardStepDesigner = this.GetDesigner();
if (currentWizardStepDesigner != null)
{
currentWizardStepDesigner.OnDragDropInternal(de);
}
}
else
{
de.Effect = DragDropEffects.None;
}
}
///<summary>
///Called when a drag-and-drop object is dragged over the control designer view.
///</summary>
///
///<param name="de">A <see cref="T:System.Windows.Forms.DragEventArgs"></see> that provides data for the event. </param>
protected override void OnDragOver(DragEventArgs de)
{
WizardControl control = this.Control as WizardControl;
if (control == null || control.WizardSteps.Count <= 0)
{
de.Effect = DragDropEffects.None;
return;
}
WizardStep step = control.WizardSteps[control.CurrentStepIndex];
Point pt = step.PointToClient(new Point(de.X, de.Y));
WizardStepDesigner wizardStepDesigner = this.GetWizardStepDesigner(step);
Rectangle clientRectangle = step.ClientRectangle;
if (!clientRectangle.Contains(pt))
{
if (!this.forwardOnDrag)
{
de.Effect = DragDropEffects.None;
return;
}
this.forwardOnDrag = false;
wizardStepDesigner.OnDragLeaveInternal(EventArgs.Empty);
base.OnDragEnter(de);
return;
}
else
{
if (!this.forwardOnDrag)
{
base.OnDragLeave(EventArgs.Empty);
wizardStepDesigner.OnDragEnterInternal(de);
this.forwardOnDrag = true;
return;
}
wizardStepDesigner.OnDragOverInternal(de);
return;
}
}
private WizardStepDesigner GetDesigner()
{
WizardControl control = this.Control as WizardControl;
WizardStep component = null;
IDesignerHost service = null;
WizardStepDesigner designer = null;
if (control != null && control.WizardSteps.Count >= 0)
{
component = control.WizardSteps[control.CurrentStepIndex];
service = (IDesignerHost)this.GetService(typeof(IDesignerHost));
designer = null;
}
if (service == null)
{
return(designer);
}
if (component == null)
{
return(designer);
}
designer = (WizardStepDesigner)service.GetDesigner(component);
return(designer);
}