├── .gitignore
├── README.md
├── example.js
├── index.js
└── package.json


/.gitignore:
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1 | node_modules
2 | 


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/README.md:
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 1 | # active-app-watcher
 2 | 
 3 | > Event emitting active window/app watcher
 4 | 
 5 | ## Install
 6 | 
 7 | ```
 8 | $ npm install active-app-watcher --save
 9 | ```
10 | 
11 | ## Usage
12 | 
13 | ```js
14 | import ActiveAppWatcher from 'active-app-watcher'
15 | 
16 | const appWatch = new ActiveAppWatcher()
17 | 
18 | appWatch.on('error', (err) => {
19 |   console.error(err)
20 | })
21 | 
22 | appWatch.on('change', (app) => {
23 |   console.log('change', app)
24 | })
25 | 
26 | appWatch.on('check', (app) => {
27 |   console.log('check', app)
28 | })
29 | 
30 | appWatch.start()
31 | ```
32 | 
33 | ## Related
34 | 
35 | * [active-app](https://github.com/bencevans/active-app) - Detect the active window/application
36 | 
37 | ## Licence
38 | 
39 | MIT © [Ben Evans](http://bensbit.co.uk)
40 | 
41 | ## 
42 | 


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/example.js:
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 1 | const ActiveAppWatcher = require('./')
 2 | 
 3 | const appWatch = new ActiveAppWatcher()
 4 | 
 5 | appWatch.on('error', (err) => {
 6 |   console.error(err)
 7 | })
 8 | 
 9 | appWatch.on('change', (app) => {
10 |   console.log('change', app)
11 | })
12 | 
13 | appWatch.on('check', (app) => {
14 |   console.log('check', app)
15 | })
16 | 
17 | appWatch.start()
18 | 


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/index.js:
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 1 | 'use strict'
 2 | const activeApp = require('active-app')
 3 | const EventEmitter = require('events').EventEmitter
 4 | const equal = require('deep-equal')
 5 | 
 6 | class ActiveAppWatcher extends EventEmitter {
 7 |   constructor(interval) {
 8 |     super()
 9 |     this.interval = interval || 1000
10 |     this.lastApp = null
11 |     this.targetState = 'start'
12 |     this.timeout = null
13 |   }
14 | 
15 | 
16 |   tick() {
17 |     let self = this
18 |     activeApp((err, app) => {
19 |       if (err) {
20 |         return self.emit('error', err)
21 |       }
22 | 
23 |       self.emit('check', app)
24 | 
25 |       if (!equal(app, self.lastApp)) {
26 |         self.emit('change', app)
27 |         self.lastApp = app
28 |       }
29 |     })
30 |   }
31 | 
32 |   start() {
33 |     let self = this
34 |     this.tick()
35 |     this.once('check', () => {
36 |       if (self.targetState === 'start') {
37 |         self.timeout = setTimeout(() => {
38 |           self.start()
39 |         }, self.interval)
40 |       }
41 |     })
42 |   }
43 | 
44 |   stop() {
45 |     this.targetState = 'stop'
46 |     cancelTimeout(this.timeout)
47 |   }
48 |   
49 | }
50 | 
51 | module.exports = ActiveAppWatcher
52 | 


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/package.json:
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 1 | {
 2 |   "name": "active-app-watcher",
 3 |   "version": "1.1.1",
 4 |   "description": "Event emitting active window/app watcher",
 5 |   "main": "index.js",
 6 |   "scripts": {
 7 |     "test": "ava"
 8 |   },
 9 |   "repository": {
10 |     "type": "git",
11 |     "url": "git+https://github.com/bencevans/active-app-watcher.git"
12 |   },
13 |   "keywords": [
14 |     "active",
15 |     "app",
16 |     "application",
17 |     "window",
18 |     "watch",
19 |     "monitor",
20 |     "event",
21 |     "eventemitter",
22 |     "x11"
23 |   ],
24 |   "author": "Ben Evans <ben@bensbit.co.uk> (http://bensbit.co.uk)",
25 |   "license": "MIT",
26 |   "bugs": {
27 |     "url": "https://github.com/bencevans/active-app-watcher/issues"
28 |   },
29 |   "homepage": "https://github.com/bencevans/active-app-watcher#readme",
30 |   "dependencies": {
31 |     "active-app": "^1.0.0",
32 |     "deep-equal": "^1.0.1"
33 |   }
34 | }
35 | 


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