protected void ClickOn(T operationElement, ClickStatus clickStatus)
{
Debug.Assert(operationElement != null);
//0. 焦点
var operationElementIndex = IndexOf(operationElement);
var lastFocus = Focus;
var lastFocusElement = this.ElementAtOrDefault(lastFocus);
//1. 仅仅右键按下
if (clickStatus.IsRightMouseButtonClicked && !clickStatus.IsLeftMouseButtonClicked)
{
if (clickStatus.IsCtrlPressed && !clickStatus.IsShiftPressed)
{
return; //仅仅ctrl按下， 不改变选中状态
}
if (operationElement.IsSelected)
{
return; //作用在选中的cell上，不改变选中状态
}
//operationCell未选中 //作用在未选中的cell上，仅仅选中该cell
SelectOnly(operationElement);
return;
}
//2. 有左键按下
//2.1 ctrl+shift按下
if (clickStatus.IsShiftPressed && clickStatus.IsCtrlPressed)
{
//todo: 扩展到Card范围
SelectRange(lastFocus, operationElementIndex, lastFocusElement != null && lastFocusElement.IsSelected);
}
//2.2 仅仅 ctrl 按下
else if (clickStatus.IsShiftPressed)
{
ForEach(cell => cell.IsSelected = false);
SelectRange(lastFocus, operationElementIndex, true);
}
//2.3 仅仅 ctrl 按下
else if (clickStatus.IsCtrlPressed)
{
operationElement.IsSelected = !operationElement.IsSelected;
Focus = operationElementIndex;
}
//2.4 没有modifier key 按下
else
{
SelectOnly(operationElement);
}
}
public ClickStatusEventArgs(ClickStatus clickStatus)
{
ClickStatus = clickStatus;
}
