/// 检验ucDropControlGroup中的Controller的拖拽
/// <summary>
/// 检验ucDropControlGroup中的Controller的拖拽
/// </summary>
/// <param name="sender">目标控件</param>
/// <param name="e">源控件</param>
/// <returns></returns>
private bool CheckBeforeDropController(object sender, DragEventArgs e)
{
if (!UtilControl.CheckDragType_PictureBox(e))
{
return(false);
}
PictureBox pbTarget = sender as PictureBox; // 目标控件
PictureBox pbSrc = (PictureBox)e.Data.GetData(type_PictureBox); // 源控件
//不能自己拖向自己
if (pbTarget == pbSrc)
{
return(false);
}
ucDropController ucDropControllerSource = pbSrc.Parent is ucDropController ? (ucDropController)pbSrc.Parent : null;
ucDropController ucDropControllerTarget = pbTarget.Parent is ucDropController ? (ucDropController)pbTarget.Parent : null;
//不能目标不在controller group区域
if (ucDropControllerTarget == null)
{
return(false);
}
CentralController controllerTypeSource;
if (ucDropControllerSource == null)
{
controllerTypeSource = (pbSrc.Tag as CentralController);
}
else
{
controllerTypeSource = ucDropControllerSource.TypeInfo;
}
if (controllerTypeSource == null)
{
return(false);
}
//目标ucDropController控件已经含有controller
if (ucDropControllerTarget.IsActive)
{
//如果不是同一种控制器，则不允许拖上去
if (controllerTypeSource.Model != ucDropControllerTarget.TypeInfo.Model)
{
return(false);
}
}
//目标ucDropController控件是空白的
else
{
// 若属于同一个ucDropControlGroup，则不可以拖拽
if (pbSrc.Parent.Parent is ucDropControlGroup && pbSrc.Parent.Parent == this)
{
return(false);
}
//如果已经存在此型号的controller则不允许添加
if (this.HasControllerType(controllerTypeSource.Model))
{
return(false);
}
}
//拖动的controller的数量
int addNumber = 1;
if (ucDropControllerSource != null && ucDropControllerSource.Controller != null)
{
addNumber = ucDropControllerSource.Controller.Quantity;
}
ListViewItem item = (ListViewItem)e.Data.GetData(type_ListViewItem, false);
//继续检查
return(CheckBeforeAddController(controllerTypeSource, addNumber));
}
