Merge pull request #380 from marp-team/mac-preview

Improve the behavior of preview mode on macOS

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 ## [Unreleased]
 
+### Fixed
+
+- Improve an activation behavior from dock in preview mode on macOS ([#380](https://github.com/marp-team/marp-cli/pull/380))
+
+### Changed
+
+- Update Dock icon in preview mode on macOS to suit for macOS Big Sur ([#380](https://github.com/marp-team/marp-cli/pull/380))
+
 ## v1.3.2 - 2021-08-18
 
 ### Fixed

rollup.config.js

@@ -52,7 +52,10 @@ const plugins = (opts = {}) => [
     ],
   }),
   pugPlugin({ pugRuntime: 'pug-runtime' }),
-  url({ sourceDir: path.join(__dirname, 'lib') }),
+  url({
+    sourceDir: path.join(__dirname, 'lib'),
+    limit: 30720,
+  }),
   compact &&
     terser({
       keep_classnames: /^CLIError$/,

src/preview.ts

@@ -3,7 +3,7 @@ import { EventEmitter } from 'events'
 import { nanoid } from 'nanoid'
 import puppeteer from 'puppeteer-core'
 import TypedEmitter from 'typed-emitter'
-import favicon from './assets/favicon.png'
+import macDockIcon from './assets/mac-dock-icon.png'
 import { ConvertType, mimeTypes } from './converter'
 import { error } from './error'
 import { File, FileType } from './file'
@@ -27,6 +27,12 @@ export namespace Preview {
     height: number
     width: number
   }
+
+  export interface Window extends EventEmitter {
+    page: puppeteer.Page
+    close: () => Promise<void>
+    load: (uri: string) => Promise<void>
+  }
 }
 
 export class Preview extends (EventEmitter as new () => TypedEmitter<Preview.Events>) {
@@ -67,7 +73,7 @@ export class Preview extends (EventEmitter as new () => TypedEmitter<Preview.Eve
     }
   }
 
-  private createWindowObject(page: puppeteer.Page) {
+  private createWindowObject(page: puppeteer.Page): Preview.Window {
     const window = new EventEmitter()
 
     page.on('close', async () => window.emit('close'))
@@ -77,7 +83,7 @@ export class Preview extends (EventEmitter as new () => TypedEmitter<Preview.Eve
       close: async () => {
         try {
           return await page.close()
-        } catch (e) {
+        } catch (e: any) {
           // Ignore raising error if a target page has already close
           /* istanbul ignore next */
           if (!e.message.includes('Target closed.')) throw e
@@ -133,7 +139,7 @@ export class Preview extends (EventEmitter as new () => TypedEmitter<Preview.Eve
     }
   }
 
-  private async launch() {
+  private async launch(): Promise<Preview.Window> {
     const baseArgs = generatePuppeteerLaunchArgs()
 
     this.puppeteerInternal = await launchPuppeteer({
@@ -150,13 +156,13 @@ export class Preview extends (EventEmitter as new () => TypedEmitter<Preview.Eve
       }),
     })
 
-    // Set Marp icon asynchrnously
+    // Set Marp icon asynchrnously (only for macOS)
     this.puppeteerInternal
       .target()
       .createCDPSession()
       .then((session) => {
         session
-          .send('Browser.setDockTile', { image: favicon.slice(22) })
+          .send('Browser.setDockTile', { image: macDockIcon.slice(22) })
           .catch(() => {
             // No ops
           })
@@ -173,11 +179,20 @@ export class Preview extends (EventEmitter as new () => TypedEmitter<Preview.Eve
     })
 
     const [page] = await this.puppeteerInternal.pages()
-    page.on('close', handlePageOnClose)
 
+    let windowObject: Preview.Window | undefined
+
+    /* istanbul ignore next */
+    if (process.platform === 'darwin') {
+      // An initial app window is not using in macOS for correct handling activation from Dock
+      windowObject = (await this.createWindow()) || undefined
+      await page.close()
+    }
+
+    page.on('close', handlePageOnClose)
     this.emit('launch')
 
-    return this.createWindowObject(page)
+    return windowObject || this.createWindowObject(page)
   }
 }