Disable RecentEmoji

[keyvanNorouzi]

Is there any way to disable the RecentEmoji tab? (version 0.7.0)
I want to dismiss the Recent Emojis

[lukesleeman]

We have a similar need, and I would be happy to submit a PR.

Digging through the code the recent emoji come from the EmojiPopup.Builder, get passed into the EmojiPopup, and from there into the EmojiView where a EmojiPagerAdapter is build with the recent emoji as its first page.

I can think of two approaches to to represent the "No recent emoji please" case:

Option 1 - Represent it as null recentEmoji field in the builder and pass the null along to emoji view, etc
This is easy enough to do - unfortunately it introduces a null into the codebase, and we will need a whole bunch of null checks in various places. Its possible somebody will miss a null check at some stage and the library will crash. This also has the disadvantage of representing a "Business state" of "I don't want recent emoji" by an instance variable being null which could be a bit obscure.

Option 2 - Create some sort of marker implementation of RecentEmoji - perhaps an NoRecentEmoji
We could create a singleton object RecentEmoji which implements the RecentEmoji interface with empty operations. Inside the EmojiView and EmojiPagerAdapter we can check to see if the recentEmoji field is NoRecentEmoji and remove that page from the adapter.

@vanniktech which approach do you think would be best for this codebase? If it was kotlin I would probably go with option 2, but this is old school java, so perhaps some more nulls aren't that bad 🙂

[vanniktech]

Option 2 sounds good.

[vanniktech]

PR welcome.