noctalia-plugin: bar widget, toolbar panel and tile, with Luau tests and a flake check

noctalia-plugin/bar.luau

@@ -0,0 +1,36 @@
+--!nonstrict
+-- valw bar widget: a camera glyph. Left click opens the toolbar panel,
+-- right click takes a region shot at once (plain `valw region`, like the
+-- keybind: the toolbar's timer and options don't apply).
+
+local PANEL = "elars/valw:toolbar"
+
+local function lastLine(text)
+  local last = ""
+  for line in string.gmatch(text or "", "[^\n]+") do
+    last = line
+  end
+  return last
+end
+
+-- Exit 3 is a cancel (Esc): not an error.
+local function report(result)
+  if result.exitCode ~= 0 and result.exitCode ~= 3 then
+    noctalia.notifyError("valw", lastLine(result.stderr))
+  end
+end
+
+function update()
+  barWidget.render(ui.row({ align = "center" }, {
+    ui.glyph({ name = "camera" }),
+  }))
+  barWidget.setTooltip(noctalia.tr("bar.tooltip"))
+end
+
+function onClick()
+  noctalia.togglePanel(PANEL)
+end
+
+function onRightClick()
+  noctalia.runAsync("valw region", report)
+end