1 |
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2 |
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3 | const isSupported = typeof navigator !== 'undefined' && 'serviceWorker' in navigator
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4 |
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5 | function waitForServiceWorker () {
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6 | return new Promise((resolve, reject) => {
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7 | if (!isSupported) {
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8 | reject(new Error('Unsupported'))
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9 | } else if (navigator.serviceWorker.controller) {
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10 |
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11 | resolve()
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12 | } else {
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13 | navigator.serviceWorker.addEventListener('controllerchange', () => {
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14 | resolve()
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15 | })
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16 | }
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17 | })
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18 | }
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19 |
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20 | class ServiceWorkerStore {
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21 | constructor (opts) {
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22 | this.ready = waitForServiceWorker()
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23 | this.name = opts.storeName
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24 | }
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25 |
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26 | list () {
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27 | const defer = {}
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28 | const promise = new Promise((resolve, reject) => {
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29 | defer.resolve = resolve
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30 | defer.reject = reject
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31 | })
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32 |
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33 | console.log('Loading stored blobs from Service Worker')
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34 | const onMessage = (event) => {
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35 | if (event.data.store !== this.name) {
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36 | return
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37 | }
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38 | switch (event.data.type) {
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39 | case 'uppy/ALL_FILES':
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40 | defer.resolve(event.data.files)
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41 | navigator.serviceWorker.removeEventListener('message', onMessage)
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42 | break
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43 | }
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44 | }
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45 |
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46 | this.ready.then(() => {
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47 | navigator.serviceWorker.addEventListener('message', onMessage)
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48 |
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49 | navigator.serviceWorker.controller.postMessage({
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50 | type: 'uppy/GET_FILES',
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51 | store: this.name
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52 | })
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53 | })
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54 |
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55 | return promise
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56 | }
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57 |
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58 | put (file) {
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59 | return this.ready.then(() => {
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60 | navigator.serviceWorker.controller.postMessage({
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61 | type: 'uppy/ADD_FILE',
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62 | store: this.name,
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63 | file: file
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64 | })
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65 | })
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66 | }
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67 |
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68 | delete (fileID) {
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69 | return this.ready.then(() => {
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70 | navigator.serviceWorker.controller.postMessage({
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71 | type: 'uppy/REMOVE_FILE',
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72 | store: this.name,
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73 | fileID: fileID
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74 | })
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75 | })
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76 | }
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77 | }
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78 |
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79 | ServiceWorkerStore.isSupported = isSupported
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80 |
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81 | module.exports = ServiceWorkerStore
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