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add_task(async function () {
await pushPrefs(["ui.key.contentAccess", 5], ["ui.key.chromeAccess", 5]);
const gPageURL1 =
"data:text/html,<body><p>" +
"<button id='button' accesskey='y'>Button</button>" +
"<input id='checkbox' type='checkbox' accesskey='z'>Checkbox" +
"</p></body>";
let tab1 = await BrowserTestUtils.openNewForegroundTab(gBrowser, gPageURL1);
Services.focus.clearFocus(window);
// Press an accesskey in the child document while the chrome is focused.
let focusedId = await performAccessKey(tab1.linkedBrowser, "y");
is(focusedId, "button", "button accesskey");
// Press an accesskey in the child document while the content document is focused.
focusedId = await performAccessKey(tab1.linkedBrowser, "z");
is(focusedId, "checkbox", "checkbox accesskey");
// Add an element with an accesskey to the chrome and press its accesskey while the chrome is focused.
let newButton = document.createXULElement("button");
newButton.id = "chromebutton";
newButton.setAttribute("aria-label", "chromebutton");
newButton.setAttribute("accesskey", "z");
document.documentElement.appendChild(newButton);
Services.focus.clearFocus(window);
newButton.getBoundingClientRect(); // Accesskey registration happens during frame construction.
focusedId = await performAccessKeyForChrome("z");
is(focusedId, "chromebutton", "chromebutton accesskey");
// Add a second tab and ensure that accesskey from the first tab is not used.
const gPageURL2 =
"data:text/html,<body>" +
"<button id='tab2button' accesskey='y'>Button in Tab 2</button>" +
"</body>";
let tab2 = await BrowserTestUtils.openNewForegroundTab(gBrowser, gPageURL2);
Services.focus.clearFocus(window);
focusedId = await performAccessKey(tab2.linkedBrowser, "y");
is(focusedId, "tab2button", "button accesskey in tab2");
// Press the accesskey for the chrome element while the content document is focused.
focusedId = await performAccessKeyForChrome("z");
is(focusedId, "chromebutton", "chromebutton accesskey");
gBrowser.removeTab(tab1);
gBrowser.removeTab(tab2);
// Test whether access key for the newButton isn't available when content
// consumes the key event.
// When content in the tab3 consumes all keydown events.
const gPageURL3 =
"data:text/html,<body id='tab3body'>" +
"<button id='tab3button' accesskey='y'>Button in Tab 3</button>" +
"<script>" +
"document.body.addEventListener('keydown', (event)=>{ event.preventDefault(); });" +
"</script></body>";
let tab3 = await BrowserTestUtils.openNewForegroundTab(gBrowser, gPageURL3);
Services.focus.clearFocus(window);
focusedId = await performAccessKey(tab3.linkedBrowser, "y");
is(focusedId, "tab3button", "button accesskey in tab3 should be focused");
newButton.onfocus = () => {
ok(false, "chromebutton shouldn't get focus during testing with tab3");
};
// Press the accesskey for the chrome element while the content document is focused.
focusedId = await performAccessKey(tab3.linkedBrowser, "z");
is(
focusedId,
"tab3body",
"button accesskey in tab3 should keep having focus"
);
newButton.onfocus = null;
gBrowser.removeTab(tab3);
// When content in the tab4 consumes all keypress events.
const gPageURL4 =
"data:text/html,<body id='tab4body'>" +
"<button id='tab4button' accesskey='y'>Button in Tab 4</button>" +
"<script>" +
"document.body.addEventListener('keypress', (event)=>{ event.preventDefault(); });" +
"</script></body>";
let tab4 = await BrowserTestUtils.openNewForegroundTab(gBrowser, gPageURL4);
Services.focus.clearFocus(window);
focusedId = await performAccessKey(tab4.linkedBrowser, "y");
is(focusedId, "tab4button", "button accesskey in tab4 should be focused");
newButton.onfocus = () => {
// EventStateManager handles accesskey before dispatching keypress event
// into the DOM tree, therefore, chrome accesskey always wins focus from
// content. However, this is different from shortcut keys.
todo(false, "chromebutton shouldn't get focus during testing with tab4");
};
// Press the accesskey for the chrome element while the content document is focused.
focusedId = await performAccessKey(tab4.linkedBrowser, "z");
is(
focusedId,
"tab4body",
"button accesskey in tab4 should keep having focus"
);
newButton.onfocus = null;
gBrowser.removeTab(tab4);
newButton.remove();
});
function performAccessKey(browser, key) {
return new Promise(resolve => {
let removeFocus, removeKeyDown, removeKeyUp;
function callback() {
removeFocus();
removeKeyUp();
removeKeyDown();
SpecialPowers.spawn(browser, [], () => {
let oldFocusedElement = content._oldFocusedElement;
delete content._oldFocusedElement;
return oldFocusedElement.id;
}).then(oldFocus => resolve(oldFocus));
}
removeFocus = BrowserTestUtils.addContentEventListener(
browser,
"focus",
callback,
{ capture: true },
event => {
if (!HTMLElement.isInstance(event.target)) {
return false; // ignore window and document focus events
}
event.target.ownerGlobal._sent = true;
let focusedElement = event.target.ownerGlobal.document.activeElement;
event.target.ownerGlobal._oldFocusedElement = focusedElement;
focusedElement.blur();
return true;
}
);
removeKeyDown = BrowserTestUtils.addContentEventListener(
browser,
"keydown",
() => {},
{ capture: true },
event => {
event.target.ownerGlobal._sent = false;
return true;
}
);
removeKeyUp = BrowserTestUtils.addContentEventListener(
browser,
"keyup",
callback,
{},
event => {
if (!event.target.ownerGlobal._sent) {
event.target.ownerGlobal._sent = true;
let focusedElement = event.target.ownerGlobal.document.activeElement;
event.target.ownerGlobal._oldFocusedElement = focusedElement;
focusedElement.blur();
return true;
}
return false;
}
);
// Spawn an no-op content task to better ensure that the messages
// for adding the event listeners above get handled.
SpecialPowers.spawn(browser, [], () => {}).then(() => {
EventUtils.synthesizeKey(key, { altKey: true, shiftKey: true });
});
});
}
// This version is used when a chrome element is expected to be found for an accesskey.
async function performAccessKeyForChrome(key) {
let waitFocusChangePromise = BrowserTestUtils.waitForEvent(
document,
"focus",
true
);
EventUtils.synthesizeKey(key, { altKey: true, shiftKey: true });
await waitFocusChangePromise;
return document.activeElement.id;
}
|
