open new tabs from cli (fixes #67)

app/main.js

@@ -8,8 +8,8 @@ if (process.argv.indexOf('--debug') !== -1) {
 
 let app = electron.app
 
-let secondInstance = app.makeSingleInstance((argv) => {
-  app.window.webContents.send('host:second-instance')
+let secondInstance = app.makeSingleInstance((argv, cwd) => {
+  app.window.webContents.send('host:second-instance', argv, cwd)
 })
 
 if (secondInstance) {

terminus-core/src/components/appRoot.component.ts

@@ -93,7 +93,7 @@ export class AppRootComponent {
             this.docking.dock()
         })
 
-        this.hostApp.secondInstance.subscribe(() => {
+        this.hostApp.secondInstance$.subscribe(() => {
             this.onGlobalHotkey()
         })
         this.hotkeys.globalHotkey.subscribe(() => {

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

@@ -1,3 +1,4 @@
+import { Subject } from 'rxjs'
 import { Injectable, NgZone, EventEmitter } from '@angular/core'
 import { ElectronService } from '../services/electron.service'
 import { Logger, LogService } from '../services/log.service'
@@ -20,7 +21,7 @@ export class HostAppService {
     quitRequested = new EventEmitter<any>()
     ready = new EventEmitter<any>()
     shown = new EventEmitter<any>()
-    secondInstance = new EventEmitter<any>()
+    secondInstance$ = new Subject<{ argv: string[], cwd: string }>()
 
     private logger: Logger
 
@@ -39,16 +40,16 @@ export class HostAppService {
 
         electron.ipcRenderer.on('host:quit-request', () => this.zone.run(() => this.quitRequested.emit()))
 
-        electron.ipcRenderer.on('uncaughtException', (err) => {
+        electron.ipcRenderer.on('uncaughtException', ($event, err) => {
             this.logger.error('Unhandled exception:', err)
         })
 
         electron.ipcRenderer.on('host:window-shown', () => {
-            this.shown.emit()
+            this.zone.run(() => this.shown.emit())
         })
 
-        electron.ipcRenderer.on('host:second-instance', () => {
-            this.secondInstance.emit()
+        electron.ipcRenderer.on('host:second-instance', ($event, argv: string[], cwd: string) => {
+            this.zone.run(() => this.secondInstance$.next({ argv, cwd }))
         })
 
         this.ready.subscribe(() => {

terminus-terminal/src/buttonProvider.ts

@@ -1,5 +1,7 @@
+import * as fs from 'mz/fs'
+import * as path from 'path'
 import { Injectable } from '@angular/core'
-import { HotkeysService, ToolbarButtonProvider, IToolbarButton, AppService, ConfigService } from 'terminus-core'
+import { HotkeysService, ToolbarButtonProvider, IToolbarButton, AppService, ConfigService, HostAppService } from 'terminus-core'
 
 import { SessionsService } from './services/sessions.service'
 import { ShellsService } from './services/shells.service'
@@ -12,6 +14,7 @@ export class ButtonProvider extends ToolbarButtonProvider {
         private sessions: SessionsService,
         private config: ConfigService,
         private shells: ShellsService,
+        hostApp: HostAppService,
         hotkeys: HotkeysService,
     ) {
         super()
@@ -20,11 +23,18 @@ export class ButtonProvider extends ToolbarButtonProvider {
                 this.openNewTab()
             }
         })
+        hostApp.secondInstance$.subscribe(async ({argv, cwd}) => {
+            if (argv.length === 2) {
+                let arg = path.resolve(cwd, argv[1])
+                if (await fs.exists(arg)) {
+                    this.openNewTab(arg)
+                }
+            }
+        })
     }
 
-    async openNewTab (): Promise<void> {
-        let cwd = null
-        if (this.app.activeTab instanceof TerminalTabComponent) {
+    async openNewTab (cwd?: string): Promise<void> {
+        if (!cwd && this.app.activeTab instanceof TerminalTabComponent) {
             cwd = await this.app.activeTab.session.getWorkingDirectory()
         }
         let command = this.config.store.terminal.shell