/// <summary>
/// Set the enabled status of the given item. If the item is disabled, a
/// tooltip string is set to explain why the command is unavailable.
/// </summary>
private void SetKwsToolsStripItemStatus(ToolStripItem item, KwsAction action, Workspace kws)
{
Debug.Assert(item != null && kws != null);
String denyReason = "";
item.Enabled = true;
bool can = m_uiBroker.CanPerformKwsAction(action, kws, ref denyReason);
if (can)
{
item.ForeColor = Color.Black;
}
else
{
item.ForeColor = Color.Gray;
}
item.Tag = can;
item.ToolTipText = denyReason;
}
/// <summary>
/// Return true if the user is allowed to perform the requested action on
/// the given user in the given workspace. If the user is not allowed, false is returned and denyReason
/// is set with a user-friendly string.
/// </summary>
public bool CanPerformKwsAction(KwsAction action, Workspace targetKws, ref String denyReason)
{
String featureNotAvailable = "Feature not available yet.";
String cantPerformNow = "This action cannot be performed at the moment.";
// FIXME: when implementing this, don't forget to enforce
// some limitations when dealing with a public workspace.
// We don't want users to rename their public workspace, or to
// change it between secure and standard. I don't even know what
// that would do.
denyReason = "";
switch (action)
{
case KwsAction.ChangeKwsType:
{
denyReason = featureNotAvailable;
return false;
}
case KwsAction.ChangeLockFlag:
{
denyReason = featureNotAvailable;
return false;
}
case KwsAction.ChangeModerationFlag:
{
denyReason = featureNotAvailable;
return false;
}
case KwsAction.Connect:
{
if (targetKws.Sm.CanWorkOnline()) return true;
else
{
denyReason = cantPerformNow;
return false;
}
}
case KwsAction.DeleteFromServer:
{
denyReason = featureNotAvailable;
return false;
}
case KwsAction.Disable:
{
if (targetKws.Sm.CanStop()) return true;
else
{
denyReason = cantPerformNow;
return false;
}
}
case KwsAction.Disconnect:
{
if (targetKws.Sm.CanWorkOffline()) return true;
else
{
denyReason = cantPerformNow;
return false;
}
}
case KwsAction.Export:
{
if( targetKws.Sm.CanExport()) return true;
else
{
denyReason = cantPerformNow;
return false;
}
}
case KwsAction.ChangePreserveDeletedFlag:
{
denyReason = featureNotAvailable;
return false;
}
case KwsAction.Rename:
{
denyReason = featureNotAvailable;
return false;
}
case KwsAction.Rebuild:
{
if (targetKws.Sm.CanRebuild()) return true;
else
{
denyReason = cantPerformNow;
return false;
}
}
case KwsAction.RemoveFromList:
{
if (targetKws.Sm.CanDelete()) return true;
else
{
denyReason = cantPerformNow;
return false;
}
}
default:
{
denyReason = "unknown action";
return false;
}
}
}