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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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
export function TooltipTextProvider() {}
TooltipTextProvider.prototype = {
getNodeText(tipElement, textOut, directionOut) {
// Don't show the tooltip if the tooltip node is a document or browser.
// Caller should ensure the node is in (composed) document.
if (
!tipElement ||
!tipElement.ownerDocument ||
tipElement.localName == "browser"
) {
return false;
}
var defView = tipElement.ownerGlobal;
// XXX Work around bug 350679:
// "Tooltips can be fired in documents with no view".
if (!defView) {
return false;
}
const XLinkNS = "http://www.w3.org/1999/xlink";
const XUL_NS =
"http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
var titleText = null;
var XLinkTitleText = null;
var SVGTitleText = null;
var XULtooltiptextText = null;
var lookingForSVGTitle = true;
var direction = tipElement.ownerDocument.dir;
// If the element is invalid per HTML5 Forms specifications and has no title,
// show the constraint validation error message.
if (
(defView.HTMLInputElement.isInstance(tipElement) ||
defView.HTMLTextAreaElement.isInstance(tipElement) ||
defView.HTMLSelectElement.isInstance(tipElement) ||
defView.HTMLButtonElement.isInstance(tipElement)) &&
!tipElement.hasAttribute("title") &&
(!tipElement.form || !tipElement.form.noValidate)
) {
// If the element is barred from constraint validation or valid,
// the validation message will be the empty string.
titleText = tipElement.validationMessage || null;
}
// If the element is an <input type='file'> without a title, we should show
// the current file selection.
if (
!titleText &&
defView.HTMLInputElement.isInstance(tipElement) &&
tipElement.type == "file" &&
!tipElement.hasAttribute("title")
) {
let files = tipElement.files;
try {
var bundle = Services.strings.createBundle(
"chrome://global/locale/layout/HtmlForm.properties"
);
if (!files.length) {
if (tipElement.multiple) {
titleText = bundle.GetStringFromName("NoFilesSelected");
} else {
titleText = bundle.GetStringFromName("NoFileSelected");
}
} else {
titleText = files[0].name;
// For UX and performance (jank) reasons we cap the number of
// files that we list in the tooltip to 20 plus a "and xxx more"
// line, or to 21 if exactly 21 files were picked.
const TRUNCATED_FILE_COUNT = 20;
let count = Math.min(files.length, TRUNCATED_FILE_COUNT);
for (let i = 1; i < count; ++i) {
titleText += "\n" + files[i].name;
}
if (files.length == TRUNCATED_FILE_COUNT + 1) {
titleText += "\n" + files[TRUNCATED_FILE_COUNT].name;
} else if (files.length > TRUNCATED_FILE_COUNT + 1) {
const l10n = new Localization(
["toolkit/global/htmlForm.ftl"],
true
);
const andXMoreStr = l10n.formatValueSync(
"input-file-and-more-files",
{ fileCount: files.length - TRUNCATED_FILE_COUNT }
);
titleText += "\n" + andXMoreStr;
}
}
} catch (e) {}
}
// Check texts against null so that title="" can be used to undefine a
// title on a child element.
let usedTipElement = null;
while (
tipElement &&
titleText == null &&
XLinkTitleText == null &&
SVGTitleText == null &&
XULtooltiptextText == null
) {
if (tipElement.nodeType == defView.Node.ELEMENT_NODE) {
if (tipElement.namespaceURI == XUL_NS) {
XULtooltiptextText = tipElement.hasAttribute("tooltiptext")
? tipElement.getAttribute("tooltiptext")
: null;
} else if (!defView.SVGElement.isInstance(tipElement)) {
titleText = tipElement.getAttribute("title");
}
if (
(defView.HTMLAnchorElement.isInstance(tipElement) ||
defView.HTMLAreaElement.isInstance(tipElement) ||
defView.HTMLLinkElement.isInstance(tipElement) ||
defView.SVGAElement.isInstance(tipElement)) &&
tipElement.href
) {
XLinkTitleText = tipElement.getAttributeNS(XLinkNS, "title");
}
if (
lookingForSVGTitle &&
(!defView.SVGElement.isInstance(tipElement) ||
tipElement.parentNode.nodeType == defView.Node.DOCUMENT_NODE)
) {
lookingForSVGTitle = false;
}
if (lookingForSVGTitle) {
for (let childNode of tipElement.childNodes) {
if (defView.SVGTitleElement.isInstance(childNode)) {
SVGTitleText = childNode.textContent;
break;
}
}
}
usedTipElement = tipElement;
}
tipElement = tipElement.flattenedTreeParentNode;
}
return [titleText, XLinkTitleText, SVGTitleText, XULtooltiptextText].some(
function (t) {
if (t && /\S/.test(t)) {
// Make CRLF and CR render one line break each.
textOut.value = t.replace(/\r\n?/g, "\n");
if (usedTipElement) {
direction = defView
.getComputedStyle(usedTipElement)
.getPropertyValue("direction");
}
directionOut.value = direction;
return true;
}
return false;
}
);
},
classID: Components.ID("{f376627f-0bbc-47b8-887e-fc92574cc91f}"),
QueryInterface: ChromeUtils.generateQI(["nsITooltipTextProvider"]),
};
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