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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 */
#include "nsCOMPtr.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/XULTooltipElement.h"
#include "mozilla/dom/NodeInfo.h"
#include "nsCTooltipTextProvider.h"
#include "nsITooltipTextProvider.h"
namespace mozilla {
namespace dom {
nsXULElement* NS_NewXULTooltipElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo) {
RefPtr<mozilla::dom::NodeInfo> nodeInfo(aNodeInfo);
auto* nim = nodeInfo->NodeInfoManager();
RefPtr<XULTooltipElement> tooltip =
new (nim) XULTooltipElement(nodeInfo.forget());
NS_ENSURE_SUCCESS(tooltip->Init(), nullptr);
return tooltip;
nsresult XULTooltipElement::Init() {
// Create the default child label node that will contain the text of the
// tooltip.
RefPtr<mozilla::dom::NodeInfo> nodeInfo;
nodeInfo = mNodeInfo->NodeInfoManager()->GetNodeInfo(
nsGkAtoms::description, nullptr, kNameSpaceID_XUL, nsINode::ELEMENT_NODE);
nsCOMPtr<Element> description;
nsresult rv = NS_NewXULElement(getter_AddRefs(description), nodeInfo.forget(),
description->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
u"tooltip-label"_ns, false);
description->SetAttr(kNameSpaceID_None, nsGkAtoms::flex, u"true"_ns, false);
ErrorResult error;
AppendChild(*description, error);
return error.StealNSResult();
nsresult XULTooltipElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
const nsAttrValue* aValue,
const nsAttrValue* aOldValue,
nsIPrincipal* aSubjectPrincipal,
bool aNotify) {
if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::label) {
// When the label attribute of this node changes propagate the text down
// into child description element.
nsCOMPtr<nsIContent> description = GetFirstChild();
if (description && description->IsXULElement(nsGkAtoms::description)) {
nsAutoString value;
if (aValue) {
"XULTooltipElement::AfterSetAttr", [description, value]() {
Element* descriptionElement = description->AsElement();
descriptionElement->SetTextContent(value, IgnoreErrors());
return nsXULElement::AfterSetAttr(aNameSpaceID, aName, aValue, aOldValue,
aSubjectPrincipal, aNotify);
nsresult XULTooltipElement::PostHandleEvent(EventChainPostVisitor& aVisitor) {
if (aVisitor.mEvent->mMessage == eXULPopupShowing &&
aVisitor.mEvent->IsTrusted() && !aVisitor.mEvent->DefaultPrevented() &&
AttrValueIs(kNameSpaceID_None, nsGkAtoms::page, nsGkAtoms::_true,
eCaseMatters)) {
// When the tooltip node has the "page" attribute set to "true" the
// tooltip text provider is used to find the tooltip text from page where
// mouse is hovering over.
nsCOMPtr<nsITooltipTextProvider> textProvider =
nsString text;
nsString direction;
bool shouldChange = false;
if (textProvider) {
textProvider->GetNodeText(GetTriggerNode(), getter_Copies(text),
getter_Copies(direction), &shouldChange);
if (shouldChange) {
SetAttr(kNameSpaceID_None, nsGkAtoms::label, text, true);
SetAttr(kNameSpaceID_None, nsGkAtoms::direction, direction, true);
} else {
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
return NS_OK;
} // namespace dom
} // namespace mozilla