Close to tray (#21)

* Close to Tray implemented

* Enable Tray Icon on Linux

* Remove unnecessary function

* Revert 26a3a98e384cc62a94f2b213af3a6543874b3d95

src/electron/baseMenu.ts

@@ -93,7 +93,7 @@ export class BaseMenu {
                 },
                 {
                     label: this.i18nService.t('close'),
-                    role: 'close',
+                    role: 'quit',
                 },
             ],
         };

src/electron/electronConstants.ts

@@ -1,4 +1,5 @@
 export class ElectronConstants {
     static readonly enableMinimizeToTrayKey: string = 'enableMinimizeToTray';
+    static readonly enableCloseToTrayKey: string = 'enableCloseToTray';
     static readonly enableTrayKey: string = 'enableTray';
 }

src/electron/tray.main.ts

@@ -68,6 +68,17 @@ export class TrayMain {
             });
         }
 
+        if (process.platform === 'win32') {
+            this.windowMain.win.on('close', async (e: Event) => {
+                if (await this.storageService.get<boolean>(ElectronConstants.enableCloseToTrayKey)) {
+                    if(!this.windowMain.isQuitting){
+                        e.preventDefault();
+                        this.hideToTray();
+                    }
+                }
+            });
+        }
+
         this.windowMain.win.on('show', async (e: Event) => {
             const enableTray = await this.storageService.get<boolean>(ElectronConstants.enableTrayKey);
             if (!enableTray) {
@@ -124,6 +135,7 @@ export class TrayMain {
     }
 
     private closeWindow() {
+        this.windowMain.isQuitting = true;
         if (this.windowMain.win != null) {
             this.windowMain.win.close();
         }

src/electron/window.main.ts

@@ -13,6 +13,7 @@ const Keys = {
 
 export class WindowMain {
     win: BrowserWindow;
+    isQuitting: boolean = false;
 
     private windowStateChangeTimer: NodeJS.Timer;
     private windowStates: { [key: string]: any; } = {};
@@ -39,6 +40,12 @@ export class WindowMain {
                     }
                 }
 
+                // This method will be called when Electron is shutting
+                // down the application.
+                app.on('before-quit', () => {
+                    this.isQuitting = true;
+                });
+
                 // This method will be called when Electron has finished
                 // initialization and is ready to create browser windows.
                 // Some APIs can only be used after this event occurs.