I have a basic Cocoa app that lets users edit text documents containing images using an embedded WebView (via <div contenteditable="true">...</div>
).
This is very similar to composing a message in Mail (the editor used there is also a WebView).
Similar to Mail, I would like to expose the Markup action extension inside my app to let users add markup to images right within my app.
After watching the "Creating Extensions" videos from WWDC 2014, I'm still not sure if it is possible to expose action extensions from a custom view (something like the sharing service picker).
In the second part of the WWDC videos, they mention that NSTextView
has built-in support for action extensions, but what if I need to expose action extensions through a custom view?
Here's an example of what this looks like in Mail: