Toggle applications via global hotkeys in Hammerspoon

hammerspoon/app_toggle.lua

@@ -0,0 +1,38 @@
+-- luacheck: read_globals hs
+
+local obj = {}
+
+function obj:bind (mods, key, name, path)
+  hs.hotkey.bind(mods, key, self:toggleFn(name, path))
+end
+
+function obj:toggleFn (name, path)
+  return function ()
+    self:toggle(name, path)
+  end
+end
+
+function obj:toggle (name, path)
+  local app = self.findRunningApp(name, path)
+
+  if app == nil then
+    return hs.application.open(path or name)
+  end
+
+  if app == hs.application.frontmostApplication() then
+    return app:hide()
+  end
+
+  return app:activate()
+end
+
+function obj.findRunningApp (name, path)
+  for _, app in ipairs(hs.application.runningApplications()) do
+    if app:name() == name and (path == nil or path == app:path()) then
+      return app
+    end
+  end
+end
+
+-- the end
+return obj