зеркало из https://github.com/mozilla/gecko-dev.git
119 строки
4.1 KiB
C++
119 строки
4.1 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 "mozilla/EventDispatcher.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/dom/HTMLOptGroupElement.h"
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#include "mozilla/dom/HTMLOptGroupElementBinding.h"
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#include "mozilla/dom/HTMLSelectElement.h" // SafeOptionListMutation
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#include "nsGkAtoms.h"
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#include "nsStyleConsts.h"
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#include "nsIFrame.h"
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#include "nsIFormControlFrame.h"
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NS_IMPL_NS_NEW_HTML_ELEMENT(OptGroup)
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namespace mozilla {
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namespace dom {
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/**
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* The implementation of <optgroup>
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*/
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HTMLOptGroupElement::HTMLOptGroupElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: nsGenericHTMLElement(std::move(aNodeInfo)) {
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// We start off enabled
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AddStatesSilently(NS_EVENT_STATE_ENABLED);
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}
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HTMLOptGroupElement::~HTMLOptGroupElement() {}
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NS_IMPL_ELEMENT_CLONE(HTMLOptGroupElement)
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void HTMLOptGroupElement::GetEventTargetParent(EventChainPreVisitor& aVisitor) {
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aVisitor.mCanHandle = false;
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if (nsIFrame* frame = GetPrimaryFrame()) {
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// FIXME(emilio): This poking at the style of the frame is broken unless we
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// flush before every event handling, which we don't really want to.
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if (frame->StyleUI()->mUserInput == StyleUserInput::None) {
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return;
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}
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}
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nsGenericHTMLElement::GetEventTargetParent(aVisitor);
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}
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Element* HTMLOptGroupElement::GetSelect() {
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Element* parent = nsINode::GetParentElement();
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if (!parent || !parent->IsHTMLElement(nsGkAtoms::select)) {
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return nullptr;
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}
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return parent;
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}
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nsresult HTMLOptGroupElement::InsertChildBefore(nsIContent* aKid,
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nsIContent* aBeforeThis,
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bool aNotify) {
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int32_t index = aBeforeThis ? ComputeIndexOf(aBeforeThis) : GetChildCount();
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SafeOptionListMutation safeMutation(GetSelect(), this, aKid, index, aNotify);
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nsresult rv =
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nsGenericHTMLElement::InsertChildBefore(aKid, aBeforeThis, aNotify);
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if (NS_FAILED(rv)) {
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safeMutation.MutationFailed();
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}
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return rv;
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}
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void HTMLOptGroupElement::RemoveChildNode(nsIContent* aKid, bool aNotify) {
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SafeOptionListMutation safeMutation(GetSelect(), this, nullptr,
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ComputeIndexOf(aKid), aNotify);
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nsGenericHTMLElement::RemoveChildNode(aKid, aNotify);
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}
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nsresult HTMLOptGroupElement::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::disabled) {
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EventStates disabledStates;
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if (aValue) {
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disabledStates |= NS_EVENT_STATE_DISABLED;
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} else {
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disabledStates |= NS_EVENT_STATE_ENABLED;
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}
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EventStates oldDisabledStates = State() & DISABLED_STATES;
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EventStates changedStates = disabledStates ^ oldDisabledStates;
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if (!changedStates.IsEmpty()) {
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ToggleStates(changedStates, aNotify);
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// All our children <option> have their :disabled state depending on our
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// disabled attribute. We should make sure their state is updated.
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for (nsIContent* child = nsINode::GetFirstChild(); child;
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child = child->GetNextSibling()) {
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if (auto optElement = HTMLOptionElement::FromNode(child)) {
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optElement->OptGroupDisabledChanged(true);
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}
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}
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}
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}
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return nsGenericHTMLElement::AfterSetAttr(
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aNameSpaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
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}
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JSObject* HTMLOptGroupElement::WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return HTMLOptGroupElement_Binding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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