Blame dom/base/test/chrome/file_bug990812-3.xul

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                 type="text/css"?>
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https://bugzilla.mozilla.org/show_bug.cgi?id=990812
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-->
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  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
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  onload="start();">
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  <label value="Mozilla Bug 990812"/>
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  <script type="application/javascript">
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    var FRAME_SCRIPT = "data:,addMessageListener('test', function (msg) {" +
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                       "sendSyncMessage('test', msg.data)})";
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    var globalMM = Cc["@mozilla.org/globalmessagemanager;1"]
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                     .getService(Ci.nsIMessageListenerManager);
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    function is(val, exp, msg) {
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      opener.wrappedJSObject.is(val, exp, msg);
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    }
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    function promiseMessage(type, mm) {
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      var order = [type, "window", "global"];
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      return new Promise(function (resolve) {
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        mm.addMessageListener("test", function onMessage(msg) {
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          is(msg.data, order.shift(), "correct message " + msg.data);
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          if (order.length == 0) {
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            mm.removeMessageListener("test", onMessage);
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            resolve();
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          }
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        });
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      });
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    }
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    /**
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     * Ensures that broadcasting an async message does only reach descendants
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     * of a specific message manager and respects message manager groups.
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     */
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    function start() {
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      var mm1 = document.querySelector("browser").messageManager;
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      var promise1 = promiseMessage("group1", mm1);
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      mm1.loadFrameScript(FRAME_SCRIPT, true);
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      var mm2 = document.querySelector("browser + browser").messageManager;
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      var promise2 = promiseMessage("group2", mm2);
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      mm2.loadFrameScript(FRAME_SCRIPT, true);
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      getGroupMessageManager("test1").broadcastAsyncMessage("test", "group1");
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      getGroupMessageManager("test2").broadcastAsyncMessage("test", "group2");
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      messageManager.broadcastAsyncMessage("test", "window");
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      globalMM.broadcastAsyncMessage("test", "global");
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      Promise.all([promise1, promise2]).then(function () {
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        opener.setTimeout("next()");
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        window.close();
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      });
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    }
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  ]]></script>
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  <browser messagemanagergroup="test1" type="content" src="about:mozilla" />
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  <browser messagemanagergroup="test2" type="content" src="about:mozilla" />
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</window>