Merge pull request #5965 from electron/installed-extension-api

Add BrowserWindow.getDevToolsExtensions API

docs/api/browser-window.md

@@ -396,6 +396,17 @@ Method will also not return if the extension's manifest is missing or incomplete
 
 Remove the DevTools extension whose name is `name`.
 
+### `BrowserWindow.getDevToolsExtensions()`
+
+Returns an Object where the keys are the extension names and each value is
+an Object containing `name` and `version` properties.
+
+To check if a DevTools extension is installed you can run the following:
+
+```javascript
+let installed = BrowserWindow.getDevToolsExtensions().hasOwnProperty('devtron')
+```
+
 ## Instance Properties
 
 Objects created with `new BrowserWindow` have the following properties:

lib/browser/chrome-extension.js

@@ -339,4 +339,13 @@ app.once('ready', function () {
     delete manifestMap[manifest.extensionId]
     delete manifestNameMap[name]
   }
+
+  BrowserWindow.getDevToolsExtensions = function () {
+    const extensions = {}
+    Object.keys(manifestNameMap).forEach(function (name) {
+      const manifest = manifestNameMap[name]
+      extensions[name] = {name: manifest.name, version: manifest.version}
+    })
+    return extensions
+  }
 })

spec/api-browser-window-spec.js

@@ -838,9 +838,11 @@ describe('browser-window module', function () {
 
       beforeEach(function () {
         BrowserWindow.removeDevToolsExtension('foo')
+        assert.equal(BrowserWindow.getDevToolsExtensions().hasOwnProperty('foo'), false)
 
         var extensionPath = path.join(__dirname, 'fixtures', 'devtools-extensions', 'foo')
         BrowserWindow.addDevToolsExtension(extensionPath)
+        assert.equal(BrowserWindow.getDevToolsExtensions().hasOwnProperty('foo'), true)
 
         w.webContents.on('devtools-opened', function () {
           var showPanelIntevalId = setInterval(function () {