Add setting to add a global _doc reference (closes #4)

module/settings/addGlobalDocReferrer.mjs

@@ -0,0 +1,36 @@
+import { __ID__ } from "../consts.mjs";
+import { Logger } from "../utils/Logger.mjs";
+import { registerDevSetting } from "../utils/DevSettings.mjs";
+
+const key = `addGlobalDocReferrer`;
+
+export function addGlobalDocReferrer() {
+
+	// #region Registration
+	Logger.log(`Registering setting: ${key}`);
+	registerDevSetting(__ID__, key, {
+		name: `OFT.setting.${key}.name`,
+		hint: `OFT.setting.${key}.hint`,
+		scope: `user`,
+		type: Boolean,
+		default: false,
+		config: true,
+		requiresReload: false,
+	});
+	// #endregion Registration
+
+	// #region Implementation
+	Hooks.on(`getHeaderControlsDocumentSheetV2`, (app, controls) => {
+		if (!game.settings.get(__ID__, key)) { return };
+
+		controls.push({
+			icon: `fa-solid fa-file`,
+			label: `OFT.apps.make-global-reference`,
+			onClick: () => {
+				globalThis._doc = app.document;
+			},
+		});
+	});
+	// #endregion Implementation
+
+};