src/third_party/WebKit/LayoutTests/http/tests/serviceworker/resources/install-phase-event-waituntil.js

   1 var pendingPorts = [];
   2 var portResolves = [];
   3
   4 onmessage = function(e) {
   5     var message = e.data;
   6     if ('port' in message) {
   7         var resolve = self.portResolves.shift();
   8         if (resolve)
   9             resolve(message.port);
  10         else
  11             self.pendingPorts.push(message.port);
  12     }
  13 };
  14
  15 function fulfillPromise() {
  16     return new Promise(function(resolve) {
  17         // Make sure the oninstall/onactivate callback returns first.
  18         Promise.resolve().then(function() {
  19             var port = self.pendingPorts.shift();
  20             if (port)
  21                 resolve(port);
  22             else
  23                 self.portResolves.push(resolve);
  24         });
  25     }).then(function(port) {
  26         port.postMessage('SYNC');
  27         return new Promise(function(resolve) {
  28             port.onmessage = function(e) {
  29                 if (e.data == 'ACK')
  30                     resolve();
  31             };
  32         });
  33     });
  34 }
  35
  36 function rejectPromise() {
  37     return new Promise(function(resolve, reject) {
  38         // Make sure the oninstall/onactivate callback returns first.
  39         Promise.resolve().then(reject);
  40     });
  41 }
  42
  43 function stripScopeName(scope) {
  44     return scope.split('/').slice(-1)[0];
  45 }
  46
  47 oninstall = function(e) {
  48     switch (stripScopeName(self.scope)) {
  49         case 'install-fulfilled':
  50             e.waitUntil(fulfillPromise());
  51             break;
  52         case 'install-rejected':
  53             e.waitUntil(rejectPromise());
  54             break;
  55     }
  56 };
  57
  58 onactivate = function(e) {
  59     switch (stripScopeName(self.scope)) {
  60         case 'activate-fulfilled':
  61             e.waitUntil(fulfillPromise());
  62             break;
  63         case 'activate-rejected':
  64             e.waitUntil(rejectPromise());
  65             break;
  66         case 'activate-multiple-fulfilled':
  67             e.waitUntil(fulfillPromise());
  68             e.waitUntil(fulfillPromise());
  69             break;
  70         case 'activate-reject-precedence':
  71             e.waitUntil(fulfillPromise());
  72             e.waitUntil(rejectPromise());
  73             break;
  74     }
  75 };