add WebHomeMiniAvatarUploadButton Interaction

[justjanne]

Related: element-hq/element-web#21946
Dependents: matrix-org/matrix-react-sdk#8474

In Short

• Adds new WebHomeMiniAvatarUploadButton interaction

[justjanne]

As "interaction" doesn’t really fit for an avatar upload, the other option that I can see right now would be adding a new event type, e.g.:

{
  "type": "object",
  "description": "Triggered when a user uploads an avatar.",
  "properties": {
    "eventName": {
      "enum": ["AvatarUpload"]
    },
    "target": {
      "description": "Whose avatar is being changed.",
      "type": "string",
      "oneOf": [
        { "const": "User", "description":  "User replaced their own avatar." },
        { "const": "Room", "description": "User replaced the avatar of a room." },
        { "const": "Space", "description": "User replaced the avatar of a room." }
      ]
    },
    "isInitial": {
      "description": "Whether the target was without avatar before this upload.",
      "type": "boolean"
    },
    "source": {
      "description": "UI element which caused the upload",
      "type": "string",
      "oneOf": [
        { "const": "HomePage", "description": "New user welcome screen" },
        { "const": "NewRoomIntro", "description": "New room welcome message" },
        { "const": "RoomProfileSettings", "description": "Room settings dialog" },
        { "const": "SpaceBasicSettings", "description": "Space settings dialog" },
        { "const": "ProfileSettings", "description": "Profile settings dialog" }
      ]
    }
  },
  "required": ["eventName", "target", "isInitial", "source"],
  "additionalProperties": false
}

Is that preferred? If so, I’ll update both PRs accordingly

[t3chguy]

I think we're wanting to avoid very pidgeonholed events so it doesn't become overwhelming

[justjanne]

We’re now tracking the onClick event of the upload button, as previously discussed :)