英文:
EA Addin EA_OnContextItemModified
问题
以下是翻译好的部分：
我在C#中创建了一个插件。我想阻止具有“已批准”状态的元素，直到该状态从“已批准”更改为止，以便不会修改/更新任何字段。
我尝试了下面的API，从方法签名中我理解将在之后获取更新，但没有找到任何用于获取预事件的API/方法（类似于EA_OnPreContextItemModified）。
public virtual void EA_OnContextItemModified(Repository repository, string guid, ObjectType ot)
{
if (ot == ObjectType.otElement && repository != null)
{
var element = repository.GetElementByGuid(guid);
if (element.Status == "Approved")
{
throw new Exception("无法修改此元素，因为它已获批准！请在修改此元素之前更改状态！");
}
}
}
例如，使用上述API，如果元素的状态为“已实施”，用户更改为“已批准”，那么在API内部，我将得到状态“已批准”，并抛出异常，以阻止数据库使用新更新进行更新。在这种情况下，我想获取具有“已实施”状态的对象的预事件状态，以及将发生的更改，然后我可以决定是否允许。
英文:
I created an addin in C#. I want to prevent elements that have Status "Approved" so that no field is modified/updated until that Status is changed from "Approved".
I tried with API below, from the method signature I understood that will get updates after, but didn't found any API/method to get a pre-event. (something like EA_OnPreContextItemModified)
public virtual void EA_OnContextItemModified(Repository repository, string guid, ObjectType ot)
{
if (ot == ObjectType.otElement && repository != null)
{
var element = repository.GetElementByGuid(guid);
if (element.Status == "Approved")
{
throw new Exception("Cannot modify this element because is Approved! Please change the status before modify this element!");
}
}
}
For example with the API above if the element has status "Implemented" and user changes to "Approved", then inside the API I get status "Approved" and throws and exception to not let the database to update with new update. In this scenario I want to get the pre-event status of the object with status "Implemented" together with what will change and me to take the decision to allow or not, is there a way?
答案1
得分: 1
你必须使用事件EA_OnContextItemChanged来记住元素的最后状态。
然后将其与EA_OnContextItemModified中的元素状态进行比较。
有点像下面的（VBScript）代码：
Dim contextName
Dim contextGUID
function EA_OnContextItemChanged(GUID, ot)
if ot = otElement then
Dim contextElement
set contextElement = Repository.GetElementByGuid(GUID)
if not contextElement is nothing then
contextName = contextElement.Name
contextGUID = contextElement.ElementGUID
end if
end if
end function
function EA_OnNotifyContextItemModified(GUID, ot)
'检查名称是否已更改
if GUID = contextGUID then
Dim contextElement
set contextElement = Repository.GetElementByGuid(GUID)
if contextName <> contextElement.Name then
msgbox "Element with name '" & contextName & "' has been changed to '" & contextElement.Name & "'"
end if
end if
end function
API没有提供停止更改的方法，所以你唯一能做的就是通过用你记住的值覆盖它来撤消它。
英文:
You have to use the event EA_OnContextItemChanged, to remember the last status of the element.
Then compare it to the status of the element in EA_OnContextItemModified.
A bit like the (VBScript) code below:
Dim contextName
Dim contextGUID
function EA_OnContextItemChanged(GUID, ot)
if ot = otElement then
Dim contextElement
set contextElement = Repository.GetElementByGuid(GUID)
if not contextElement is nothing then
contextName = contextElement.Name
contextGUID = contextElement.ElementGUID
end if
end if
end function
function EA_OnNotifyContextItemModified(GUID, ot)
'check if the name has been changed
if GUID = contextGUID then
Dim contextElement
set contextElement = Repository.GetElementByGuid(GUID)
if contextName <> contextElement.Name then
msgbox "Element with name '" & contextName & "' has been changed to '" & contextElement.Name & "'"
end if
end if
end function
The API doesn't offer a way to stop the change, so all you can do it undo it by overwriting it with the values you remembered.
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