gecko-dev/dom/browser-element/mochitest/browserElement_BackForward.js

100 строки
2.7 KiB
JavaScript

/* Any copyright is dedicated to the public domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Bug 741755 - Test that canGo{Back,Forward} and go{Forward,Back} work with
// <iframe mozbrowser>.
"use strict";
SimpleTest.waitForExplicitFinish();
browserElementTestHelpers.setEnabledPref(true);
browserElementTestHelpers.addPermission();
var iframe;
function addOneShotIframeEventListener(event, fn) {
function wrapper(e) {
iframe.removeEventListener(event, wrapper);
fn(e);
};
iframe.addEventListener(event, wrapper);
}
function runTest() {
iframe = document.createElement('iframe');
iframe.setAttribute('mozbrowser', 'true');
addOneShotIframeEventListener('mozbrowserloadend', function() {
SimpleTest.executeSoon(test2);
});
iframe.src = browserElementTestHelpers.emptyPage1;
document.body.appendChild(iframe);
}
function checkCanGoBackAndForward(canGoBack, canGoForward, nextTest) {
var seenCanGoBackResult = false;
iframe.getCanGoBack().onsuccess = function(e) {
is(seenCanGoBackResult, false, "onsuccess handler shouldn't be called twice.");
seenCanGoBackResult = true;
is(e.target.result, canGoBack);
maybeRunNextTest();
};
var seenCanGoForwardResult = false;
iframe.getCanGoForward().onsuccess = function(e) {
is(seenCanGoForwardResult, false, "onsuccess handler shouldn't be called twice.");
seenCanGoForwardResult = true;
is(e.target.result, canGoForward);
maybeRunNextTest();
};
function maybeRunNextTest() {
if (seenCanGoBackResult && seenCanGoForwardResult) {
nextTest();
}
}
}
function test2() {
checkCanGoBackAndForward(false, false, test3);
}
function test3() {
addOneShotIframeEventListener('mozbrowserloadend', function() {
checkCanGoBackAndForward(true, false, test4);
});
SimpleTest.executeSoon(function() {
iframe.src = browserElementTestHelpers.emptyPage2;
});
}
function test4() {
addOneShotIframeEventListener('mozbrowserlocationchange', function(e) {
is(e.detail, browserElementTestHelpers.emptyPage3);
checkCanGoBackAndForward(true, false, test5);
});
SimpleTest.executeSoon(function() {
iframe.src = browserElementTestHelpers.emptyPage3;
});
}
function test5() {
addOneShotIframeEventListener('mozbrowserlocationchange', function(e) {
is(e.detail, browserElementTestHelpers.emptyPage2);
checkCanGoBackAndForward(true, true, test6);
});
iframe.goBack();
}
function test6() {
addOneShotIframeEventListener('mozbrowserlocationchange', function(e) {
is(e.detail, browserElementTestHelpers.emptyPage1);
checkCanGoBackAndForward(false, true, SimpleTest.finish);
});
iframe.goBack();
}
addEventListener('testready', runTest);