зеркало из https://github.com/mozilla/gecko-dev.git
147 строки
4.1 KiB
C++
147 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(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: nsGenericHTMLElement(aNodeInfo)
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{
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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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{
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}
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NS_IMPL_ISUPPORTS_INHERITED(HTMLOptGroupElement, nsGenericHTMLElement,
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nsIDOMHTMLOptGroupElement)
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NS_IMPL_ELEMENT_CLONE(HTMLOptGroupElement)
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NS_IMPL_BOOL_ATTR(HTMLOptGroupElement, Disabled, disabled)
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NS_IMPL_STRING_ATTR(HTMLOptGroupElement, Label, label)
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nsresult
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HTMLOptGroupElement::GetEventTargetParent(EventChainPreVisitor& aVisitor)
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{
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aVisitor.mCanHandle = false;
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// Do not process any DOM events if the element is disabled
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// XXXsmaug This is not the right thing to do. But what is?
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if (HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)) {
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return NS_OK;
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}
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nsIFrame* frame = GetPrimaryFrame();
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if (frame) {
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const nsStyleUserInterface* uiStyle = frame->StyleUserInterface();
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if (uiStyle->mUserInput == StyleUserInput::None ||
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uiStyle->mUserInput == StyleUserInput::Disabled) {
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return NS_OK;
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}
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}
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return nsGenericHTMLElement::GetEventTargetParent(aVisitor);
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}
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Element*
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HTMLOptGroupElement::GetSelect()
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{
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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
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HTMLOptGroupElement::InsertChildAt(nsIContent* aKid,
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uint32_t aIndex,
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bool aNotify)
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{
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SafeOptionListMutation safeMutation(GetSelect(), this, aKid, aIndex, aNotify);
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nsresult rv = nsGenericHTMLElement::InsertChildAt(aKid, aIndex, 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
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HTMLOptGroupElement::RemoveChildAt(uint32_t aIndex, bool aNotify)
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{
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SafeOptionListMutation safeMutation(GetSelect(), this, nullptr, aIndex,
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aNotify);
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nsGenericHTMLElement::RemoveChildAt(aIndex, aNotify);
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}
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nsresult
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HTMLOptGroupElement::AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
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const nsAttrValue* aValue, bool aNotify)
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{
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if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::disabled) {
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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 (child->IsHTMLElement(nsGkAtoms::option)) {
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// No need to call |IsElement()| because it's an HTML element.
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child->AsElement()->UpdateState(true);
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}
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}
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}
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return nsGenericHTMLElement::AfterSetAttr(aNameSpaceID, aName, aValue,
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aNotify);
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}
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EventStates
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HTMLOptGroupElement::IntrinsicState() const
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{
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EventStates state = nsGenericHTMLElement::IntrinsicState();
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if (HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)) {
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state |= NS_EVENT_STATE_DISABLED;
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state &= ~NS_EVENT_STATE_ENABLED;
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} else {
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state &= ~NS_EVENT_STATE_DISABLED;
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state |= NS_EVENT_STATE_ENABLED;
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}
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return state;
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}
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JSObject*
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HTMLOptGroupElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return HTMLOptGroupElementBinding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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