forked from mirrors/gecko-dev
100 lines
4 KiB
C++
100 lines
4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsCOMPtr.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/XULTooltipElement.h"
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#include "mozilla/dom/NodeInfo.h"
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#include "nsCTooltipTextProvider.h"
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#include "nsITooltipTextProvider.h"
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namespace mozilla {
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namespace dom {
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nsXULElement* NS_NewXULTooltipElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo) {
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RefPtr<mozilla::dom::NodeInfo> nodeInfo(aNodeInfo);
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auto* nim = nodeInfo->NodeInfoManager();
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RefPtr<XULTooltipElement> tooltip =
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new (nim) XULTooltipElement(nodeInfo.forget());
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NS_ENSURE_SUCCESS(tooltip->Init(), nullptr);
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return tooltip;
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}
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nsresult XULTooltipElement::Init() {
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// Create the default child label node that will contain the text of the
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// tooltip.
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RefPtr<mozilla::dom::NodeInfo> nodeInfo;
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nodeInfo = mNodeInfo->NodeInfoManager()->GetNodeInfo(
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nsGkAtoms::description, nullptr, kNameSpaceID_XUL, nsINode::ELEMENT_NODE);
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nsCOMPtr<Element> description;
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nsresult rv = NS_NewXULElement(getter_AddRefs(description), nodeInfo.forget(),
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dom::NOT_FROM_PARSER);
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NS_ENSURE_SUCCESS(rv, rv);
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description->SetAttr(kNameSpaceID_None, nsGkAtoms::_class,
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u"tooltip-label"_ns, false);
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description->SetAttr(kNameSpaceID_None, nsGkAtoms::flex, u"true"_ns, false);
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ErrorResult error;
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AppendChild(*description, error);
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return error.StealNSResult();
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}
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nsresult XULTooltipElement::AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aSubjectPrincipal,
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bool aNotify) {
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if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::label) {
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// When the label attribute of this node changes propagate the text down
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// into child description element.
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nsCOMPtr<nsIContent> description = GetFirstChild();
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if (description && description->IsXULElement(nsGkAtoms::description)) {
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nsAutoString value;
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if (aValue) {
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aValue->ToString(value);
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}
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nsContentUtils::AddScriptRunner(NS_NewRunnableFunction(
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"XULTooltipElement::AfterSetAttr", [description, value]() {
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Element* descriptionElement = description->AsElement();
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descriptionElement->SetTextContent(value, IgnoreErrors());
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}));
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}
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}
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return nsXULElement::AfterSetAttr(aNameSpaceID, aName, aValue, aOldValue,
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aSubjectPrincipal, aNotify);
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}
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nsresult XULTooltipElement::PostHandleEvent(EventChainPostVisitor& aVisitor) {
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if (aVisitor.mEvent->mMessage == eXULPopupShowing &&
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aVisitor.mEvent->IsTrusted() && !aVisitor.mEvent->DefaultPrevented() &&
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AttrValueIs(kNameSpaceID_None, nsGkAtoms::page, nsGkAtoms::_true,
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eCaseMatters)) {
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// When the tooltip node has the "page" attribute set to "true" the
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// tooltip text provider is used to find the tooltip text from page where
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// mouse is hovering over.
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nsCOMPtr<nsITooltipTextProvider> textProvider =
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do_GetService(NS_DEFAULTTOOLTIPTEXTPROVIDER_CONTRACTID);
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nsString text;
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nsString direction;
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bool shouldChange = false;
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if (textProvider) {
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textProvider->GetNodeText(GetTriggerNode(), getter_Copies(text),
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getter_Copies(direction), &shouldChange);
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}
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if (shouldChange) {
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SetAttr(kNameSpaceID_None, nsGkAtoms::label, text, true);
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SetAttr(kNameSpaceID_None, nsGkAtoms::direction, direction, true);
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} else {
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aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
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aVisitor.mEvent->PreventDefault();
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}
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}
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return NS_OK;
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}
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} // namespace dom
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} // namespace mozilla
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