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/* 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
"use strict";
function checkTextChangeEvent(
event,
id,
text,
start,
end,
isInserted,
isFromUserInput
) {
let tcEvent = event.QueryInterface(nsIAccessibleTextChangeEvent);
is(tcEvent.start, start, `Correct start offset for ${prettyName(id)}`);
is(tcEvent.length, end - start, `Correct length for ${prettyName(id)}`);
is(
tcEvent.isInserted,
isInserted,
`Correct isInserted flag for ${prettyName(id)}`
);
is(tcEvent.modifiedText, text, `Correct text for ${prettyName(id)}`);
is(
tcEvent.isFromUserInput,
isFromUserInput,
`Correct value of isFromUserInput for ${prettyName(id)}`
);
ok(
tcEvent.accessibleDocument instanceof nsIAccessibleDocument,
"Accessible document not present."
);
}
async function changeText(browser, id, value, events) {
let onEvents = waitForOrderedEvents(
events.map(({ isInserted }) => {
let eventType = isInserted ? EVENT_TEXT_INSERTED : EVENT_TEXT_REMOVED;
return [eventType, id];
})
);
// Change text in the subtree.
await invokeContentTask(browser, [id, value], (contentId, contentValue) => {
content.document.getElementById(contentId).firstChild.textContent =
contentValue;
});
let resolvedEvents = await onEvents;
events.forEach(({ isInserted, str, offset }, idx) =>
checkTextChangeEvent(
resolvedEvents[idx],
id,
str,
offset,
offset + str.length,
isInserted,
false
)
);
}
async function removeTextFromInput(browser, id, value, start, end) {
let onTextRemoved = waitForEvent(EVENT_TEXT_REMOVED, id);
// Select text and delete it.
await invokeContentTask(
browser,
[id, start, end],
(contentId, contentStart, contentEnd) => {
let el = content.document.getElementById(contentId);
el.focus();
el.setSelectionRange(contentStart, contentEnd);
}
);
await invokeContentTask(browser, [], () => {
const { ContentTaskUtils } = ChromeUtils.importESModule(
);
const EventUtils = ContentTaskUtils.getEventUtils(content);
EventUtils.sendChar("VK_DELETE", content);
});
let event = await onTextRemoved;
checkTextChangeEvent(event, id, value, start, end, false, true);
}
/**
* Test text change event and its interface:
* - start
* - length
* - isInserted
* - modifiedText
* - isFromUserInput
*/
addAccessibleTask(
`
<p id="p">abc</p>
<input id="input" value="input" />`,
async function (browser) {
let events = [
{ isInserted: false, str: "abc", offset: 0 },
{ isInserted: true, str: "def", offset: 0 },
];
await changeText(browser, "p", "def", events);
// Adding text should not send events with diffs for non-editable text.
// We do this to avoid screen readers reading out confusing diffs for
// live regions.
events = [
{ isInserted: false, str: "def", offset: 0 },
{ isInserted: true, str: "deDEFf", offset: 0 },
];
await changeText(browser, "p", "deDEFf", events);
// Test isFromUserInput property.
await removeTextFromInput(browser, "input", "n", 1, 2);
},
{ iframe: true, remoteIframe: true }
);