feat(statusline): give components an id; get component by id

lua/heirline/statusline.lua

@@ -53,6 +53,26 @@ function StatusLine:new(child)
     return new
 end
 
+function StatusLine:make_ids(index)
+    local parent_id = self:nonlocal("id") or {}
+
+    self.id = vim.tbl_extend('force', parent_id, {[#parent_id + 1] = index})
+
+    for i, c in ipairs(self) do
+        c:make_ids(i)
+    end
+end
+
+function StatusLine:get(id)
+    id = id or {}
+    local curr = self
+    for _, i in ipairs(id) do
+        curr = curr[i]
+    end
+    return curr
+end
+
+
 function StatusLine:nonlocal(attr)
     return getmetatable(self).__index(self, attr)
 end