electron · codebytere · Jan 26, 2019 · Jan 24, 2019 · Jan 25, 2019
diff --git a/atom/browser/api/atom_api_web_contents.cc b/atom/browser/api/atom_api_web_contents.cc
@@ -1433,36 +1433,32 @@ void WebContents::InspectServiceWorker() {
   }
 }
 
-void WebContents::HasServiceWorker(const base::Callback<void(bool)>& callback) {
-  auto* context = GetServiceWorkerContext(web_contents());
-  if (!context)
-    return;
-
-  struct WrappedCallback {
-    base::Callback<void(bool)> callback_;
-    explicit WrappedCallback(const base::Callback<void(bool)>& callback)
-        : callback_(callback) {}
-    void Run(content::ServiceWorkerCapability capability) {
-      callback_.Run(capability !=
-                    content::ServiceWorkerCapability::NO_SERVICE_WORKER);
-      delete this;
-    }
-  };
+void OnServiceWorkerCheckDone(scoped_refptr<util::Promise> promise,
+                              content::ServiceWorkerCapability capability) {
+  promise->Resolve(capability !=
+                   content::ServiceWorkerCapability::NO_SERVICE_WORKER);
+}
 
-  auto* wrapped_callback = new WrappedCallback(callback);
+v8::Local<v8::Promise> WebContents::HasServiceWorker() {
+  scoped_refptr<util::Promise> promise = new util::Promise(isolate());
+  auto* context = GetServiceWorkerContext(web_contents());
+  if (!context) {
+    promise->RejectWithErrorMessage("Unable to get ServiceWorker context.");
+  }
 
   context->CheckHasServiceWorker(
-      web_contents()->GetLastCommittedURL(), GURL::EmptyGURL(),
-      base::BindOnce(&WrappedCallback::Run,
-                     base::Unretained(wrapped_callback)));
+      web_contents()->GetLastCommittedURL(),
+      web_contents()->GetLastCommittedURL(),
+      base::BindOnce(&OnServiceWorkerCheckDone, promise));
+
+  return promise->GetHandle();
 }
 
 void WebContents::UnregisterServiceWorker(
     const base::Callback<void(bool)>& callback) {
   auto* context = GetServiceWorkerContext(web_contents());
   if (!context)
     return;
-
   context->UnregisterServiceWorker(web_contents()->GetLastCommittedURL(),
                                    callback);
 }

diff --git a/atom/browser/api/atom_api_web_contents.h b/atom/browser/api/atom_api_web_contents.h
@@ -161,7 +161,7 @@ class WebContents : public mate::TrackableObject<WebContents>,
   void DisableDeviceEmulation();
   void InspectElement(int x, int y);
   void InspectServiceWorker();
-  void HasServiceWorker(const base::Callback<void(bool)>&);
+  v8::Local<v8::Promise> HasServiceWorker();
   void UnregisterServiceWorker(const base::Callback<void(bool)>&);
   void SetIgnoreMenuShortcuts(bool ignore);
   void SetAudioMuted(bool muted);

diff --git a/docs/api/promisification.md b/docs/api/promisification.md
@@ -26,7 +26,6 @@ When a majority of affected functions are migrated, this flag will be enabled by
 - [inAppPurchase.purchaseProduct(productID, quantity, callback)](https://github.com/electron/electron/blob/master/docs/api/in-app-purchase.md#purchaseProduct)
 - [inAppPurchase.getProducts(productIDs, callback)](https://github.com/electron/electron/blob/master/docs/api/in-app-purchase.md#getProducts)
 - [netLog.stopLogging([callback])](https://github.com/electron/electron/blob/master/docs/api/net-log.md#stopLogging)
-- [protocol.isProtocolHandled(scheme, callback)](https://github.com/electron/electron/blob/master/docs/api/protocol.md#isProtocolHandled)
 - [ses.getCacheSize(callback)](https://github.com/electron/electron/blob/master/docs/api/session.md#getCacheSize)
 - [ses.clearCache(callback)](https://github.com/electron/electron/blob/master/docs/api/session.md#clearCache)
 - [ses.clearStorageData([options, callback])](https://github.com/electron/electron/blob/master/docs/api/session.md#clearStorageData)
@@ -36,7 +35,6 @@ When a majority of affected functions are migrated, this flag will be enabled by
 - [ses.getBlobData(identifier, callback)](https://github.com/electron/electron/blob/master/docs/api/session.md#getBlobData)
 - [ses.clearAuthCache(options[, callback])](https://github.com/electron/electron/blob/master/docs/api/session.md#clearAuthCache)
 - [contents.executeJavaScript(code[, userGesture, callback])](https://github.com/electron/electron/blob/master/docs/api/web-contents.md#executeJavaScript)
-- [contents.hasServiceWorker(callback)](https://github.com/electron/electron/blob/master/docs/api/web-contents.md#hasServiceWorker)
 - [contents.unregisterServiceWorker(callback)](https://github.com/electron/electron/blob/master/docs/api/web-contents.md#unregisterServiceWorker)
 - [contents.print([options], [callback])](https://github.com/electron/electron/blob/master/docs/api/web-contents.md#print)
 - [contents.printToPDF(options, callback)](https://github.com/electron/electron/blob/master/docs/api/web-contents.md#printToPDF)
@@ -59,3 +57,5 @@ When a majority of affected functions are migrated, this flag will be enabled by
 - [shell.openExternal(url[, options, callback])](https://github.com/electron/electron/blob/master/docs/api/shell.md#openExternal)
 - [webviewTag.capturePage([rect, ]callback)](https://github.com/electron/electron/blob/master/docs/api/webview-tag.md#capturePage)
 - [win.capturePage([rect, ]callback)](https://github.com/electron/electron/blob/master/docs/api/browser-window.md#capturePage)
+- [desktopCapturer.getSources(options, callback)](https://github.com/electron/electron/blob/master/docs/api/desktop-capturer.md#getSources)
+- [contents.hasServiceWorker(callback)](https://github.com/electron/electron/blob/master/docs/api/web-contents.md#hasServiceWorker)
diff --git a/docs/api/web-contents.md b/docs/api/web-contents.md
@@ -1164,6 +1164,12 @@ Captures a snapshot of the page within `rect`. Omitting `rect` will capture the
 Checks if any ServiceWorker is registered and returns a boolean as
 response to `callback`.
 
+**[Deprecated Soon](promisification.md)**
+
+#### `contents.hasServiceWorker()`
+
+Returns `Promise<Boolean>` - Resolves with a boolean depending on whether or not the current `webContents` has a registered ServiceWorker
+
 #### `contents.unregisterServiceWorker(callback)`
 
 * `callback` Function

diff --git a/lib/browser/api/web-contents.js b/lib/browser/api/web-contents.js
@@ -375,6 +375,7 @@ WebContents.prototype._init = function () {
   this.setMaxListeners(0)
 
   this.capturePage = deprecate.promisify(this.capturePage)
+  this.hasServiceWorker = deprecate.promisify(this.hasServiceWorker)
 
   // Dispatch IPC messages to the ipc module.
   this.on('-ipc-message', function (event, internal, channel, args) {

diff --git a/spec/api-web-contents-spec.js b/spec/api-web-contents-spec.js
@@ -228,6 +228,23 @@ describe('webContents module', () => {
     })
   })
 
+  describe('ServiceWorker APIs', () => {
+    it('can successfully register a ServiceWorker', async () => {
+      await w.loadFile(path.join(fixtures, 'api', 'service-worker', 'service-worker.html'))
+      const hasSW = await w.webContents.hasServiceWorker()
+      expect(hasSW).to.be.true()
+    })
+
+    it('can successfully register a ServiceWorker (callback)', (done) => {
+      w.loadFile(path.join(fixtures, 'api', 'service-worker', 'service-worker.html')).then(() => {
+        w.webContents.hasServiceWorker(hasSW => {
+          expect(hasSW).to.be.true()
+          done()
+        })
+      })
+    })
+  })
+
   describe('isCurrentlyAudible() API', () => {
     it('returns whether audio is playing', async () => {
       const webContents = remote.getCurrentWebContents()

diff --git a/spec/fixtures/api/service-worker/service-worker.html b/spec/fixtures/api/service-worker/service-worker.html
@@ -0,0 +1,12 @@
+<html>
+<body>
+  <script>
+      window. => console.log(error)
+
+      navigator.serviceWorker.register('service-worker.js', {
+        scope: './'
+      }).then(sw => {
+        console.log("registered")
+      }).catch(err => console.log(error))
+  </script>
+    </body>
diff --git a/spec/fixtures/api/service-worker/service-worker.js b/spec/fixtures/api/service-worker/service-worker.js
@@ -0,0 +1,5 @@
+console.log('Service worker startups.')
+
+self.addEventListener('install', (event) => {
+  console.log('Service worker installed.')
+})