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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsCOMPtr.h"
#include "nsButtonBoxFrame.h"
#include "nsIContent.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMXULButtonElement.h"
#include "nsGkAtoms.h"
#include "nsNameSpaceManager.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIDOMElement.h"
#include "nsDisplayList.h"
#include "nsContentUtils.h"
#include "mozilla/dom/Element.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/EventStates.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/TextEvents.h"
using namespace mozilla;
NS_IMPL_ISUPPORTS(nsButtonBoxFrame::nsButtonBoxListener, nsIDOMEventListener)
nsresult
nsButtonBoxFrame::nsButtonBoxListener::HandleEvent(nsIDOMEvent* aEvent)
{
if (!mButtonBoxFrame) {
return NS_OK;
}
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("blur")) {
mButtonBoxFrame->Blurred();
return NS_OK;
}
NS_ABORT();
return NS_OK;
}
//
// NS_NewXULButtonFrame
//
// Creates a new Button frame and returns it
//
nsIFrame*
NS_NewButtonBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsButtonBoxFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsButtonBoxFrame)
nsButtonBoxFrame::nsButtonBoxFrame(nsStyleContext* aContext) :
nsBoxFrame(aContext, false),
mButtonBoxListener(nullptr),
mIsHandlingKeyEvent(false)
{
UpdateMouseThrough();
}
void
nsButtonBoxFrame::Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
mButtonBoxListener = new nsButtonBoxListener(this);
mContent->AddSystemEventListener(NS_LITERAL_STRING("blur"), mButtonBoxListener, false);
}
void
nsButtonBoxFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
mContent->RemoveSystemEventListener(NS_LITERAL_STRING("blur"), mButtonBoxListener, false);
mButtonBoxListener->mButtonBoxFrame = nullptr;
mButtonBoxListener = nullptr;
nsBoxFrame::DestroyFrom(aDestructRoot);
}
void
nsButtonBoxFrame::BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists)
{
// override, since we don't want children to get events
if (aBuilder->IsForEventDelivery())
return;
nsBoxFrame::BuildDisplayListForChildren(aBuilder, aLists);
}
nsresult
nsButtonBoxFrame::HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
NS_ENSURE_ARG_POINTER(aEventStatus);
if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
return NS_OK;
}
switch (aEvent->mMessage) {
case eKeyDown: {
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (NS_VK_SPACE == keyEvent->mKeyCode) {
EventStateManager* esm = aPresContext->EventStateManager();
// :hover:active state
esm->SetContentState(mContent, NS_EVENT_STATE_HOVER);
esm->SetContentState(mContent, NS_EVENT_STATE_ACTIVE);
mIsHandlingKeyEvent = true;
}
break;
}
// On mac, Return fires the default button, not the focused one.
#ifndef XP_MACOSX
case eKeyPress: {
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (NS_VK_RETURN == keyEvent->mKeyCode) {
nsCOMPtr<nsIDOMXULButtonElement> buttonEl(do_QueryInterface(mContent));
if (buttonEl) {
MouseClicked(aEvent);
*aEventStatus = nsEventStatus_eConsumeNoDefault;
}
}
break;
}
#endif
case eKeyUp: {
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (NS_VK_SPACE == keyEvent->mKeyCode) {
mIsHandlingKeyEvent = false;
// only activate on keyup if we're already in the :hover:active state
NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
EventStates buttonState = mContent->AsElement()->State();
if (buttonState.HasAllStates(NS_EVENT_STATE_ACTIVE |
NS_EVENT_STATE_HOVER)) {
// return to normal state
EventStateManager* esm = aPresContext->EventStateManager();
esm->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
MouseClicked(aEvent);
}
}
break;
}
case eMouseClick: {
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
if (mouseEvent->IsLeftClickEvent()) {
MouseClicked(mouseEvent);
}
break;
}
default:
break;
}
return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
}
void
nsButtonBoxFrame::Blurred()
{
NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
EventStates buttonState = mContent->AsElement()->State();
if (mIsHandlingKeyEvent &&
buttonState.HasAllStates(NS_EVENT_STATE_ACTIVE |
NS_EVENT_STATE_HOVER)) {
// return to normal state
EventStateManager* esm = PresContext()->EventStateManager();
esm->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
}
mIsHandlingKeyEvent = false;
}
void
nsButtonBoxFrame::DoMouseClick(WidgetGUIEvent* aEvent, bool aTrustEvent)
{
// Don't execute if we're disabled.
if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled,
nsGkAtoms::_true, eCaseMatters))
return;
// Execute the oncommand event handler.
bool isShift = false;
bool isControl = false;
bool isAlt = false;
bool isMeta = false;
if(aEvent) {
WidgetInputEvent* inputEvent = aEvent->AsInputEvent();
isShift = inputEvent->IsShift();
isControl = inputEvent->IsControl();
isAlt = inputEvent->IsAlt();
isMeta = inputEvent->IsMeta();
}
// Have the content handle the event, propagating it according to normal DOM rules.
nsCOMPtr<nsIPresShell> shell = PresContext()->GetPresShell();
if (shell) {
nsContentUtils::DispatchXULCommand(mContent,
aEvent ?
aEvent->IsTrusted() : aTrustEvent,
nullptr, shell,
isControl, isAlt, isShift, isMeta);
}
}
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