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+<!DOCTYPE HTML>
+<!-- This Source Code Form is subject to the terms of the Mozilla Public
+ - License, v. 2.0. If a copy of the MPL was not distributed with this
+ - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=502673
+-->
+
+<head>
+ <title>Test for Bug 502673</title>
+ <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+ <script type="text/javascript" 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: function () {
+ if (this.input instanceof SpecialPowers.Ci.nsIDOMNSEditableElement) {
+ var editor = SpecialPowers.wrap(this.input).editor;
+ editor.removeDocumentStateListener(this);
+ }
+ },
+
+ NotifyDocumentCreated: function () {
+ },
+
+ NotifyDocumentStateChanged: function (aNowDirty) {
+ if (this.input instanceof SpecialPowers.Ci.nsIDOMNSEditableElement) {
+ 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");
+ if (input instanceof SpecialPowers.Ci.nsIDOMNSEditableElement) {
+ // 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(1);
+
+ // 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");
+
+ // TODO: Test for NotifyDocumentCreated
+
+ SimpleTest.finish();
+ }
+ </script>
+ </pre>
+
+ <input type="text" id="ip" />
+</body>
+</html>