add options

src/options/options.js

@@ -0,0 +1,26 @@
+function persistOptions() {
+	var globals = {}; //global addon options
+
+	globals = {
+		width: document.querySelector('#indicator-width').value,
+		orientation: document.querySelector('#indicator-orientation').value
+	};
+
+	return browser.storage.local.set({
+		globals: globals
+	});
+}
+
+document.addEventListener('DOMContentLoaded', () => {
+	loadOptions().then((options) => {
+		document.querySelector('#indicator-width').value = options.globals.width;
+		document.querySelector('#indicator-orientation').value = options.globals.orientation;
+	});
+});
+
+var list = document.querySelectorAll('select,input');
+for (var i = 0; i < list.length; i++) {
+	list[i].addEventListener('change', (ev) => {
+		persistOptions();
+	});
+}