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| 1 // Allows a document to exercise the Budget API within a service worker by sendi
ng commands. |
| 2 |
| 3 self.addEventListener('message', function(workerEvent) { |
| 4 port = workerEvent.data; |
| 5 |
| 6 // Listen to incoming commands on the message port. |
| 7 port.onmessage = function(event) { |
| 8 if (typeof event.data != 'object' || !event.data.command) |
| 9 return; |
| 10 var options = event.data.options || {}; |
| 11 switch (event.data.command) { |
| 12 |
| 13 case 'getCost': |
| 14 navigator.budget.getCost('silent-push').then(function(cost) { |
| 15 port.postMessage({ |
| 16 command: event.data.command, |
| 17 success: true, |
| 18 cost: cost }); |
| 19 }).catch(makeErrorHandler(event.data.command)); |
| 20 break; |
| 21 |
| 22 case 'getCostInvalidType': |
| 23 navigator.budget.getCost('frobinator').then(function(cost) { |
| 24 port.postMessage({ |
| 25 command: event.data.command, |
| 26 success: true, |
| 27 cost: cost }); |
| 28 }).catch(makeErrorHandler(event.data.command)); |
| 29 break; |
| 30 |
| 31 case 'getBudget': |
| 32 navigator.budget.getBudget().then(budget => { |
| 33 port.postMessage({ |
| 34 command: event.data.command, |
| 35 success: true, |
| 36 budgetAt: budget[0].budgetAt, |
| 37 time: budget[0].time }); |
| 38 }).catch(makeErrorHandler(event.data.command)); |
| 39 break; |
| 40 |
| 41 default: |
| 42 port.postMessage({ |
| 43 command: 'error', |
| 44 errorMessage: 'Invalid command: ' + event.data.command }); |
| 45 break; |
| 46 } |
| 47 }; |
| 48 |
| 49 // Notify the controller that the worker is now available. |
| 50 port.postMessage('ready'); |
| 51 }); |
| 52 |
| 53 function makeErrorHandler(command) { |
| 54 return function(error) { |
| 55 var errorMessage = error ? error.message : 'unknown error'; |
| 56 port.postMessage({ |
| 57 command: command, |
| 58 success: false, |
| 59 errorMessage: errorMessage }); |
| 60 }; |
| 61 } |
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