156 lines
4.3 KiB
C++
156 lines
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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/dom/HTMLSummaryElement.h"
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#include "mozilla/dom/HTMLDetailsElement.h"
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#include "mozilla/dom/HTMLElementBinding.h"
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#include "mozilla/dom/HTMLUnknownElement.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/TextEvents.h"
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#include "nsFocusManager.h"
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NS_IMPL_NS_NEW_HTML_ELEMENT(Summary)
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namespace mozilla {
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namespace dom {
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HTMLSummaryElement::~HTMLSummaryElement()
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{
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}
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NS_IMPL_ELEMENT_CLONE(HTMLSummaryElement)
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nsresult
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HTMLSummaryElement::PostHandleEvent(EventChainPostVisitor& aVisitor)
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{
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nsresult rv = NS_OK;
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if (!aVisitor.mPresContext) {
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return rv;
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}
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if (aVisitor.mEventStatus == nsEventStatus_eConsumeNoDefault) {
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return rv;
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}
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if (!IsMainSummary()) {
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return rv;
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}
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WidgetEvent* const event = aVisitor.mEvent;
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if (event->HasMouseEventMessage()) {
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WidgetMouseEvent* mouseEvent = event->AsMouseEvent();
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if (mouseEvent->IsLeftClickEvent()) {
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RefPtr<HTMLDetailsElement> details = GetDetails();
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MOZ_ASSERT(details,
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"Expected to find details since this is the main summary!");
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// When dispatching a synthesized mouse click event to a details element
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// with 'display: none', both Chrome and Safari do not toggle the 'open'
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// attribute. We had tried to be compatible with this behavior, but found
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// more inconsistency in test cases in bug 1245424. So we stop doing that.
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details->ToggleOpen();
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aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
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return NS_OK;
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}
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} // event->HasMouseEventMessage()
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if (event->HasKeyEventMessage()) {
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WidgetKeyboardEvent* keyboardEvent = event->AsKeyboardEvent();
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bool dispatchClick = false;
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switch (event->mMessage) {
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case eKeyPress:
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if (keyboardEvent->mCharCode == ' ') {
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// Consume 'space' key to prevent scrolling the page down.
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aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
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}
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dispatchClick = keyboardEvent->mKeyCode == NS_VK_RETURN;
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break;
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case eKeyUp:
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dispatchClick = keyboardEvent->mKeyCode == NS_VK_SPACE;
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break;
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default:
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break;
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}
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if (dispatchClick) {
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rv = DispatchSimulatedClick(this, event->mFlags.mIsTrusted,
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aVisitor.mPresContext);
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if (NS_SUCCEEDED(rv)) {
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aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
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}
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}
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} // event->HasKeyEventMessage()
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return rv;
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}
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bool
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HTMLSummaryElement::IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable,
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int32_t* aTabIndex)
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{
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bool disallowOverridingFocusability =
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nsGenericHTMLElement::IsHTMLFocusable(aWithMouse, aIsFocusable, aTabIndex);
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if (disallowOverridingFocusability || !IsMainSummary()) {
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return disallowOverridingFocusability;
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}
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#ifdef XP_MACOSX
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// The parent does not have strong opinion about the focusability of this main
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// summary element, but we'd like to override it when mouse clicking on Mac OS
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// like other form elements.
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*aIsFocusable = !aWithMouse || nsFocusManager::sMouseFocusesFormControl;
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#else
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// The main summary element is focusable on other platforms.
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*aIsFocusable = true;
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#endif
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// Give a chance to allow the subclass to override aIsFocusable.
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return false;
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}
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int32_t
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HTMLSummaryElement::TabIndexDefault()
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{
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// Make the main summary be able to navigate via tab, and be focusable.
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// See nsGenericHTMLElement::IsHTMLFocusable().
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return IsMainSummary() ? 0 : nsGenericHTMLElement::TabIndexDefault();
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}
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bool
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HTMLSummaryElement::IsMainSummary() const
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{
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HTMLDetailsElement* details = GetDetails();
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if (!details) {
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return false;
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}
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return details->GetFirstSummary() == this || IsRootOfNativeAnonymousSubtree();
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}
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HTMLDetailsElement*
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HTMLSummaryElement::GetDetails() const
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{
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return HTMLDetailsElement::FromContentOrNull(GetParent());
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}
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JSObject*
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HTMLSummaryElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return HTMLElementBinding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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