test_bug502673.html

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<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=502673

-->

<head>

  <title>Test for Bug 502673</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

  <script src="/tests/SimpleTest/EventUtils.js"></script>

</head>

<body onload="doTest();">

  <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=502673">Mozilla Bug 502673</a>

  <p id="display"></p>

  <div id="content" style="display: none">

  </div>

  <pre id="test">

    <script type="application/javascript">

      /** Test for Bug 502673 **/

      SimpleTest.waitForExplicitFinish();

      function listener() {

      listener.prototype =

        NotifyDocumentWillBeDestroyed() {

          var editor = SpecialPowers.wrap(this.input).editor;

          editor.removeDocumentStateListener(this);

},

        NotifyDocumentStateChanged() {

          var editor = SpecialPowers.wrap(this.input).editor;

          editor.removeDocumentStateListener(this);

},

        QueryInterface: SpecialPowers.wrapCallback(function(iid) {

          if (iid.equals(SpecialPowers.Ci.nsIDocumentStateListener) ||

              iid.equals(SpecialPowers.Ci.nsISupports))

            return this;

          throw SpecialPowers.Cr.NS_ERROR_NO_INTERFACE;

}),

};

      function doTest() {

        var input = document.getElementById("ip");

        // Add multiple listeners to the same editor

        var editor = SpecialPowers.wrap(input).editor;

        var listener1 = new listener();

        listener1.input = input;

        var listener2 = new listener();

        listener2.input = input;

        var listener3 = new listener();

        listener3.input = input;

        editor.addDocumentStateListener(listener1);

        editor.addDocumentStateListener(listener2);

        editor.addDocumentStateListener(listener3);

        // Test 1. Fire NotifyDocumentStateChanged notifications where the

        // listeners remove themselves

        input.value = "mozilla";

        editor.undo();

        // Report success if we get here - clearly we didn't crash

        ok(true, "Multiple listeners removed themselves after " +

                 "NotifyDocumentStateChanged notifications - didn't crash");

        // Add the listeners again for the next test

        editor.addDocumentStateListener(listener1);

        editor.addDocumentStateListener(listener2);

        editor.addDocumentStateListener(listener3);

        // Test 2. Fire NotifyDocumentWillBeDestroyed notifications where the

        // listeners remove themselves (though in the real world, listeners

        // shouldn't do this as nsEditor::PreDestroy removes them as

        // listeners anyway)

        document.body.removeChild(input);

        ok(true, "Multiple listeners removed themselves after " +

                 "NotifyDocumentWillBeDestroyed notifications - didn't crash");

       SimpleTest.finish();

   </script>

  </pre>

  <input type="text" id="ip" />

</body>

</html>