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-rw-r--r--layout/xul/nsButtonBoxFrame.cpp230
1 files changed, 230 insertions, 0 deletions
diff --git a/layout/xul/nsButtonBoxFrame.cpp b/layout/xul/nsButtonBoxFrame.cpp
new file mode 100644
index 000000000..45d934516
--- /dev/null
+++ b/layout/xul/nsButtonBoxFrame.cpp
@@ -0,0 +1,230 @@
+/* -*- 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 nsRect& aDirtyRect,
+ const nsDisplayListSet& aLists)
+{
+ // override, since we don't want children to get events
+ if (aBuilder->IsForEventDelivery())
+ return;
+ nsBoxFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, 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);
+ }
+}