public void OnDismiss()
{
this.textView = null;
this.methods = null;
if (nativeStringsCacheForOverloads != null)
{
nativeStringsCacheForOverloads.Free();
nativeStringsCacheForOverloads = null;
}
this.currentMethod = 0;
this.currentParameter = 0;
this.displayed = false;
}
public void Close()
{
this.Dismiss();
this.textView = null;
this.methods = null;
}
private static HashSet<string> FormalParamNames(MethodListForAMethodTip m, int index)
{
int numParams = m.GetParameterCount(index);
HashSet<string> hs = new HashSet<string>();
for (int i = 0; i < numParams; ++i)
{
string name, display, description;
m.GetParameterInfo(index, i, out name, out display, out description);
hs.Add(name);
}
return hs;
}
public void Refresh(IVsTextView textView, MethodListForAMethodTip methods, TextSpan context, MethodTipMiscellany methodTipMiscellany)
{
bool needToDismissNow = false;
if (this.displayed && methodTipMiscellany == MethodTipMiscellany.JustPressedBackspace
&& MethodsSeemToDiffer(this.methods, methods))
{
// We just hit backspace, and apparently the 'set of methods' changed. This most commonly happens in a case like
// foo(42, bar( // in a tip for bar(), now press backspace
// foo(42, bar // now we're in a location where we'd be in a tip for foo()
// and we want to dismiss the tip.
needToDismissNow = true;
}
this.methods = methods;
if (nativeStringsCacheForOverloads != null)
{
nativeStringsCacheForOverloads.Free();
}
nativeStringsCacheForOverloads = new NativeStringsCacheForOverloads(methods.GetCount(), this);
this.context = context;
this.textView = textView;
if (needToDismissNow)
{
this.Dismiss();
}
else
{
this.Refresh(methodTipMiscellany);
}
}
private static bool MethodsSeemToDiffer(MethodListForAMethodTip a, MethodListForAMethodTip b)
{
// this is an approximate test, that is good enough in practice
return (a.GetName(0) != b.GetName(0))
|| (a.GetCount() != b.GetCount())
|| (!(a.GetNoteworthyParamInfoLocations()[0].Equals(b.GetNoteworthyParamInfoLocations()[0])));
}
