57 lines
2.0 KiB
JavaScript
57 lines
2.0 KiB
JavaScript
function pageScript() {
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window.addEventListener("beforeunload", function (event) {
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var str = "Some text that causes the beforeunload dialog to be shown";
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event.returnValue = str;
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return str;
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}, true);
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}
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SpecialPowers.pushPrefEnv({"set": [["dom.require_user_interaction_for_beforeunload", false]]});
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const PAGE_URL =
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"data:text/html," + encodeURIComponent("<script>(" + pageScript.toSource() + ")();</script>");
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add_task(function* enableDialogs() {
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// The onbeforeunload dialog should appear.
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let dialogShown = false;
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function onDialogShown(node) {
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dialogShown = true;
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let dismissButton = node.ui.button0;
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dismissButton.click();
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}
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let obsName = "tabmodal-dialog-loaded";
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Services.obs.addObserver(onDialogShown, obsName, false);
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yield openPage(true);
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Services.obs.removeObserver(onDialogShown, obsName);
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Assert.ok(dialogShown);
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});
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add_task(function* disableDialogs() {
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// The onbeforeunload dialog should NOT appear.
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yield openPage(false);
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info("If we time out here, then the dialog was shown...");
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});
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function* openPage(enableDialogs) {
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// Open about:blank in a new tab.
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yield BrowserTestUtils.withNewTab({ gBrowser, url: "about:blank" }, function* (browser) {
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// Load the content script in the frame.
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let methodName = enableDialogs ? "enableDialogs" : "disableDialogs";
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yield ContentTask.spawn(browser, methodName, function* (name) {
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Components.utils.import("resource://gre/modules/Services.jsm");
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Services.obs.addObserver(doc => {
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if (content && doc == content.document) {
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content.QueryInterface(Ci.nsIInterfaceRequestor).
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getInterface(Ci.nsIDOMWindowUtils)[name]();
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}
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}, "document-element-inserted", false);
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});
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// Load the page.
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yield BrowserTestUtils.loadURI(browser, PAGE_URL);
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yield BrowserTestUtils.browserLoaded(browser);
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// And then navigate away.
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yield BrowserTestUtils.loadURI(browser, "http://example.com/");
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yield BrowserTestUtils.browserLoaded(browser);
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});
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}
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