feat: automatically reload when picker config is saved

Author: lambdalisue

autoload/fall/command/FallConfig.vim

@@ -14,4 +14,12 @@ function! fall#command#FallConfig#call() abort
     call writefile(readfile(s:fall_config_template), l:path)
   endif
   execute 'vsplit' fnameescape(l:path)
+  augroup fall_config
+    autocmd!
+    autocmd BufWritePost <buffer> call s:reload()
+  augroup END
+endfunction
+
+function! s:reload() abort
+  call denops#request('fall', 'picker:reload', [])
 endfunction

denops/fall/config.ts

@@ -1,10 +1,17 @@
 import type { Denops } from "jsr:@denops/std@^7.3.0";
 
-import { refineActionPicker } from "./config/action_picker.ts";
-import { refineGlobalConfig } from "./config/global_config.ts";
+import {
+  refineActionPicker,
+  resetActionPickerParams,
+} from "./config/action_picker.ts";
+import {
+  refineGlobalConfig,
+  resetGlobalConfig,
+} from "./config/global_config.ts";
 import {
   defineItemPickerFromCurator,
   defineItemPickerFromSource,
+  resetItemPickerParams,
 } from "./config/item_picker.ts";
 
 export { getGlobalConfig } from "./config/global_config.ts";
@@ -17,6 +24,7 @@ export {
 export async function loadUserConfig(
   denops: Denops,
   path: string,
+  { suffix }: { suffix?: string } = {},
 ): Promise<void> {
   const ctx = {
     denops,
@@ -26,7 +34,10 @@ export async function loadUserConfig(
     refineGlobalConfig,
   };
   try {
-    const { main } = await import(path);
+    const { main } = await import(`${path}${suffix ?? ""}`);
+    resetGlobalConfig();
+    resetActionPickerParams();
+    resetItemPickerParams();
     await main(ctx);
   } catch (e) {
     console.warn(

denops/fall/config/action_picker.ts

@@ -18,6 +18,15 @@ const actionPickerParams: ActionPickerParams = {
   }),
 };
 
+export function resetActionPickerParams(): void {
+  actionPickerParams.matchers = [fzfMatcher()];
+  actionPickerParams.coordinator = modernCoordinator({
+    hidePreview: true,
+    widthRatio: 0.4,
+    heightRatio: 0.4,
+  });
+}
+
 export function getActionPickerParams(): Readonly<
   ActionPickerParams & GlobalConfig
 > {

denops/fall/config/global_config.ts

@@ -11,6 +11,11 @@ const globalConfig: GlobalConfig = {
   theme: MODERN_THEME,
 };
 
+export function resetGlobalConfig(): void {
+  globalConfig.coordinator = modernLayout();
+  globalConfig.theme = MODERN_THEME;
+}
+
 export function getGlobalConfig(): Readonly<GlobalConfig> {
   return globalConfig;
 }

denops/fall/config/item_picker.ts

@@ -28,6 +28,10 @@ export function listItemPickerNames(): readonly string[] {
   return Array.from(itemPickerParamsMap.keys());
 }
 
+export function resetItemPickerParams(): void {
+  itemPickerParamsMap.clear();
+}
+
 export function getItemPickerParams(
   name: string,
 ): Readonly<ItemPickerParams<unknown, string> & GlobalConfig> | undefined {

denops/fall/main/picker.ts

@@ -24,7 +24,7 @@ import {
 } from "../config.ts";
 import { Picker } from "../picker.ts";
 
-let initialized: Promise<void>;
+let initialized: Promise<void> | undefined;
 let zindex = 50;
 
 export const main: Entrypoint = (denops) => {
@@ -68,15 +68,19 @@ export const main: Entrypoint = (denops) => {
       assert(options, isOptions);
       return await startPicker(denops, args, screen, params, options);
     },
+    "picker:reload": async () => {
+      initialized = undefined;
+      await init(denops, `#${performance.now()}`);
+    },
   };
 };
 
-async function init(denops: Denops): Promise<void> {
+async function init(denops: Denops, suffix?: string): Promise<void> {
   if (initialized) {
     return initialized;
   }
   const path = await denops.eval("expand(g:fall_config_path)") as string;
-  return (initialized = loadUserConfig(denops, path));
+  return (initialized = loadUserConfig(denops, path, { suffix }));
 }
 
 async function startPicker(