mirror of
https://github.com/mozilla/gecko-dev.git
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5b753da289
MozReview-Commit-ID: JtTcLL5OPF0
222 lines
6.7 KiB
C++
222 lines
6.7 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 "nsButtonBoxFrame.h"
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#include "nsIContent.h"
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#include "nsIDOMXULButtonElement.h"
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#include "nsGkAtoms.h"
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#include "nsNameSpaceManager.h"
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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#include "nsDisplayList.h"
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#include "nsContentUtils.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/Event.h"
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#include "mozilla/dom/MouseEventBinding.h"
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#include "mozilla/EventStateManager.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/TextEvents.h"
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using namespace mozilla;
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NS_IMPL_ISUPPORTS(nsButtonBoxFrame::nsButtonBoxListener, nsIDOMEventListener)
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nsresult
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nsButtonBoxFrame::nsButtonBoxListener::HandleEvent(dom::Event* aEvent)
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{
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if (!mButtonBoxFrame) {
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return NS_OK;
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}
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nsAutoString eventType;
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aEvent->GetType(eventType);
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if (eventType.EqualsLiteral("blur")) {
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mButtonBoxFrame->Blurred();
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return NS_OK;
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}
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MOZ_ASSERT_UNREACHABLE("Unexpected eventType");
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return NS_OK;
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}
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//
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// NS_NewXULButtonFrame
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//
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// Creates a new Button frame and returns it
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//
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nsIFrame*
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NS_NewButtonBoxFrame (nsIPresShell* aPresShell, ComputedStyle* aStyle)
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{
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return new (aPresShell) nsButtonBoxFrame(aStyle);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsButtonBoxFrame)
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nsButtonBoxFrame::nsButtonBoxFrame(ComputedStyle* aStyle, ClassID aID) :
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nsBoxFrame(aStyle, aID, false),
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mButtonBoxListener(nullptr),
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mIsHandlingKeyEvent(false)
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{
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UpdateMouseThrough();
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}
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void
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nsButtonBoxFrame::Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
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mButtonBoxListener = new nsButtonBoxListener(this);
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mContent->AddSystemEventListener(NS_LITERAL_STRING("blur"), mButtonBoxListener, false);
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}
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void
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nsButtonBoxFrame::DestroyFrom(nsIFrame* aDestructRoot, PostDestroyData& aPostDestroyData)
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{
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mContent->RemoveSystemEventListener(NS_LITERAL_STRING("blur"), mButtonBoxListener, false);
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mButtonBoxListener->mButtonBoxFrame = nullptr;
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mButtonBoxListener = nullptr;
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nsBoxFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
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}
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void
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nsButtonBoxFrame::BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists)
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{
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// override, since we don't want children to get events
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if (aBuilder->IsForEventDelivery())
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return;
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nsBoxFrame::BuildDisplayListForChildren(aBuilder, aLists);
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}
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nsresult
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nsButtonBoxFrame::HandleEvent(nsPresContext* aPresContext,
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WidgetGUIEvent* aEvent,
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nsEventStatus* aEventStatus)
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{
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NS_ENSURE_ARG_POINTER(aEventStatus);
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if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
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return NS_OK;
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}
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switch (aEvent->mMessage) {
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case eKeyDown: {
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WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
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if (!keyEvent) {
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break;
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}
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if (NS_VK_SPACE == keyEvent->mKeyCode) {
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EventStateManager* esm = aPresContext->EventStateManager();
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// :hover:active state
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esm->SetContentState(mContent, NS_EVENT_STATE_HOVER);
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esm->SetContentState(mContent, NS_EVENT_STATE_ACTIVE);
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mIsHandlingKeyEvent = true;
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}
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break;
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}
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// On mac, Return fires the default button, not the focused one.
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#ifndef XP_MACOSX
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case eKeyPress: {
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WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
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if (!keyEvent) {
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break;
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}
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if (NS_VK_RETURN == keyEvent->mKeyCode) {
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nsCOMPtr<nsIDOMXULButtonElement> buttonEl(do_QueryInterface(mContent));
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if (buttonEl) {
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MouseClicked(aEvent);
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*aEventStatus = nsEventStatus_eConsumeNoDefault;
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}
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}
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break;
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}
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#endif
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case eKeyUp: {
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WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
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if (!keyEvent) {
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break;
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}
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if (NS_VK_SPACE == keyEvent->mKeyCode) {
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mIsHandlingKeyEvent = false;
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// only activate on keyup if we're already in the :hover:active state
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NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
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EventStates buttonState = mContent->AsElement()->State();
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if (buttonState.HasAllStates(NS_EVENT_STATE_ACTIVE |
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NS_EVENT_STATE_HOVER)) {
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// return to normal state
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EventStateManager* esm = aPresContext->EventStateManager();
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esm->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
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esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
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MouseClicked(aEvent);
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}
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}
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break;
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}
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case eMouseClick: {
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WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
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if (mouseEvent->IsLeftClickEvent()) {
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MouseClicked(mouseEvent);
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}
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break;
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}
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default:
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break;
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}
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return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
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}
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void
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nsButtonBoxFrame::Blurred()
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{
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NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
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EventStates buttonState = mContent->AsElement()->State();
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if (mIsHandlingKeyEvent &&
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buttonState.HasAllStates(NS_EVENT_STATE_ACTIVE |
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NS_EVENT_STATE_HOVER)) {
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// return to normal state
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EventStateManager* esm = PresContext()->EventStateManager();
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esm->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
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esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
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}
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mIsHandlingKeyEvent = false;
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}
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void
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nsButtonBoxFrame::MouseClicked(WidgetGUIEvent* aEvent)
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{
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// Don't execute if we're disabled.
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if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled,
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nsGkAtoms::_true, eCaseMatters))
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return;
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// Have the content handle the event, propagating it according to normal DOM rules.
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nsCOMPtr<nsIPresShell> shell = PresContext()->GetPresShell();
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if (!shell)
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return;
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// Execute the oncommand event handler.
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WidgetInputEvent* inputEvent = aEvent->AsInputEvent();
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WidgetMouseEventBase* mouseEvent = aEvent->AsMouseEventBase();
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nsContentUtils::DispatchXULCommand(mContent, aEvent->IsTrusted(), nullptr,
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shell, inputEvent->IsControl(),
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inputEvent->IsAlt(), inputEvent->IsShift(),
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inputEvent->IsMeta(),
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mouseEvent ? mouseEvent->inputSource
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: MouseEvent_Binding::MOZ_SOURCE_UNKNOWN);
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}
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