From b77413ff8f59f380612074f0c9bd49093d8db695 Mon Sep 17 00:00:00 2001
From: Mike Vink <mike@pionative.com>
Date: Sun, 19 Jan 2025 13:52:52 +0100
Subject: Squashed 'mut/neovim/pack/plugins/start/blink.cmp/' content from
 commit 1cc3b1a

git-subtree-dir: mut/neovim/pack/plugins/start/blink.cmp
git-subtree-split: 1cc3b1a908fbcfd15451c4772759549724f38524
---
 lua/blink/cmp/lib/event_emitter.lua | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 lua/blink/cmp/lib/event_emitter.lua

(limited to 'lua/blink/cmp/lib/event_emitter.lua')

diff --git a/lua/blink/cmp/lib/event_emitter.lua b/lua/blink/cmp/lib/event_emitter.lua
new file mode 100644
index 0000000..d3939cb
--- /dev/null
+++ b/lua/blink/cmp/lib/event_emitter.lua
@@ -0,0 +1,37 @@
+--- @class blink.cmp.EventEmitter<T> : { event: string, autocmd?: string, listeners: table<fun(data: T)>, new: ( fun(event: string, autocmd: string): blink.cmp.EventEmitter ), on: ( fun(self: blink.cmp.EventEmitter, callback: fun(data: T)) ), off: ( fun(self: blink.cmp.EventEmitter, callback: fun(data: T)) ), emit: ( fun(self: blink.cmp.EventEmitter, data?: table) ) };
+--- TODO: is there a better syntax for this?
+
+local event_emitter = {}
+
+--- @param event string
+--- @param autocmd? string
+function event_emitter.new(event, autocmd)
+  local self = setmetatable({}, { __index = event_emitter })
+  self.event = event
+  self.autocmd = autocmd
+  self.listeners = {}
+  return self
+end
+
+function event_emitter:on(callback) table.insert(self.listeners, callback) end
+
+function event_emitter:off(callback)
+  for idx, cb in ipairs(self.listeners) do
+    if cb == callback then table.remove(self.listeners, idx) end
+  end
+end
+
+function event_emitter:emit(data)
+  data = data or {}
+  data.event = self.event
+  for _, callback in ipairs(self.listeners) do
+    callback(data)
+  end
+  if self.autocmd then
+    require('blink.cmp.lib.utils').schedule_if_needed(
+      function() vim.api.nvim_exec_autocmds('User', { pattern = self.autocmd, modeline = false, data = data }) end
+    )
+  end
+end
+
+return event_emitter
-- 
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