Implementing Spell Checking

Hi Matt,

We don't have anything additional at this time related to spell checking.  I would suggest using the squiggle tags to mark the spelling errors since that's a common way of doing it, and then customize the context menu to show spelling corrections when applicable.  One way to do this is to override SyntaxEditor.CreateDefaultContextMenu and customize the menu items from the base method call.

Okay, thanks.    Just wanted to see if there were any best practices suggestions.

Yup, I'm already customizing the menu for some other things, so I'll add spelling suggestions there as well.

Hello again,

I have my spell checker working fine mostly except for one thing: when something external to the editor changes, I want my squiggle tagger to be refreshed.    That is, if I do a word replacement, everything works fine, but if I do something like "Ignore" or "Add to dictionary" the spell checker is now happy with the word, but it still has squiggles unless I do something like change the document in order to force a refresh of the squiggles.    Is there some way to programmatically "invalidate" the current squiggles?

[update]

PS: Unregistering the squiggle tagger and re-registering it gets the desired effect, but that doesn't seem like the most elegant approach.

Hi Matt,

The proper way is to raise the TagsChanged event on the tagger.  When you do that, the range you pass in the event arguments is told to refresh.

Wow, getting my tagger is turning out to be a pain.    Is it some convoluted combination of GetService() + GetTagger() or something else?

The registration looks like this:

RegisterService(new CodeDocumentTaggerProvider<SpellingSquiggleTagger>(typeof(SpellingSquiggleTagger)));

 But this doesn't work:

Editor.Document.Language.GetService<SpellingSquiggleTagger>();

 So I guess first you do this:

var service = lang.GetService<CodeDocumentTaggerProvider<SpellingSquiggleTagger>>();
var tagger = service.GetTagger<SpellingSquiggleTagger>(Document); 

But that fails with an invalid cast.     I can't find any similar examples in the samples or anything useful in the docs...

I guess what I want is the tagger service that was produced by the CodeDocumentTaggerProvider, but where is that object?

Hi Matt,

The tagger itself is not a service, but the provider that creates it is.  That's why GetService won't work for getting the tagger.

When the tagger is installed, it will be available in the document's Properties collection like:

SpellingSquiggleTagger tagger = null;
if (document.Properties.TryGetValue(typeof(SpellingSquiggleTagger), out tagger)) {
    ...
}

Ah ha.   Thanks!