fixed terminal not getting focus when switching windows (fixes #692)

app/lib/window.ts

@@ -202,6 +202,10 @@ export class Window {
             }
         })
 
+        this.window.on('focus', () => {
+            this.send('host:window-focused')
+        })
+
         ipcMain.on('window-focus', event => {
             if (!this.window || event.sender !== this.window.webContents) {
                 return

terminus-core/src/services/app.service.ts

@@ -83,6 +83,10 @@ export class AppService {
                 this.startTabStorage()
             }
         }
+
+        hostApp.windowFocused$.subscribe(() => {
+            this._activeTab?.emitFocused()
+        })
     }
 
     startTabStorage () {

terminus-core/src/services/hostApp.service.ts

@@ -39,6 +39,7 @@ export class HostAppService {
     private configChangeBroadcast = new Subject<void>()
     private windowCloseRequest = new Subject<void>()
     private windowMoved = new Subject<void>()
+    private windowFocused = new Subject<void>()
     private displayMetricsChanged = new Subject<void>()
     private logger: Logger
     private windowId: number
@@ -85,6 +86,8 @@ export class HostAppService {
 
     get windowMoved$ (): Observable<void> { return this.windowMoved }
 
+    get windowFocused$ (): Observable<void> { return this.windowFocused }
+
     get displayMetricsChanged$ (): Observable<void> { return this.displayMetricsChanged }
 
     private constructor (
@@ -128,6 +131,10 @@ export class HostAppService {
             this.zone.run(() => this.windowMoved.next())
         })
 
+        electron.ipcRenderer.on('host:window-focused', () => {
+            this.zone.run(() => this.windowFocused.next())
+        })
+
         electron.ipcRenderer.on('host:display-metrics-changed', () => {
             this.zone.run(() => this.displayMetricsChanged.next())
         })