Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 214 insertions, 0 deletions

diff --git a/layout/xul/nsButtonBoxFrame.cpp b/layout/xul/nsButtonBoxFrame.cpp
new file mode 100644
index 0000000000..9257704fe4
--- /dev/null
+++ b/layout/xul/nsButtonBoxFrame.cpp
@@ -0,0 +1,214 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "nsIDOMXULButtonElement.h"
+#include "nsGkAtoms.h"
+#include "nsNameSpaceManager.h"
+#include "nsPresContext.h"
+#include "nsDisplayList.h"
+#include "nsContentUtils.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/Event.h"
+#include "mozilla/dom/MouseEventBinding.h"
+#include "mozilla/EventStateManager.h"
+#include "mozilla/EventStates.h"
+#include "mozilla/MouseEvents.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/TextEvents.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+NS_IMPL_ISUPPORTS(nsButtonBoxFrame::nsButtonBoxListener, nsIDOMEventListener)
+
+nsresult nsButtonBoxFrame::nsButtonBoxListener::HandleEvent(
+    dom::Event* aEvent) {
+  if (!mButtonBoxFrame) {
+    return NS_OK;
+  }
+
+  nsAutoString eventType;
+  aEvent->GetType(eventType);
+
+  if (eventType.EqualsLiteral("blur")) {
+    mButtonBoxFrame->Blurred();
+    return NS_OK;
+  }
+
+  MOZ_ASSERT_UNREACHABLE("Unexpected eventType");
+  return NS_OK;
+}
+
+//
+// NS_NewXULButtonFrame
+//
+// Creates a new Button frame and returns it
+//
+nsIFrame* NS_NewButtonBoxFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
+  return new (aPresShell)
+      nsButtonBoxFrame(aStyle, aPresShell->GetPresContext());
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsButtonBoxFrame)
+
+nsButtonBoxFrame::nsButtonBoxFrame(ComputedStyle* aStyle,
+                                   nsPresContext* aPresContext, ClassID aID)
+    : nsBoxFrame(aStyle, aPresContext, aID, false),
+      mButtonBoxListener(nullptr),
+      mIsHandlingKeyEvent(false) {}
+
+void nsButtonBoxFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
+                            nsIFrame* aPrevInFlow) {
+  nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
+
+  mButtonBoxListener = new nsButtonBoxListener(this);
+
+  mContent->AddSystemEventListener(u"blur"_ns, mButtonBoxListener, false);
+}
+
+void nsButtonBoxFrame::DestroyFrom(nsIFrame* aDestructRoot,
+                                   PostDestroyData& aPostDestroyData) {
+  mContent->RemoveSystemEventListener(u"blur"_ns, mButtonBoxListener, false);
+
+  mButtonBoxListener->mButtonBoxFrame = nullptr;
+  mButtonBoxListener = nullptr;
+
+  nsBoxFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
+}
+
+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) {
+        RefPtr<nsIDOMXULButtonElement> button =
+            mContent->AsElement()->AsXULButton();
+        if (button) {
+          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()
+#ifdef XP_MACOSX
+          // On Mac, ctrl-click will send a context menu event from the widget,
+          // so we don't want to dispatch widget command if it is redispatched
+          // from the mouse event with ctrl key is pressed.
+          && !mouseEvent->IsControl()
+#endif
+      ) {
+        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::MouseClicked(WidgetGUIEvent* aEvent) {
+  // Don't execute if we're disabled.
+  if (mContent->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled,
+                                         nsGkAtoms::_true, eCaseMatters))
+    return;
+
+  // Have the content handle the event, propagating it according to normal DOM
+  // rules.
+  RefPtr<mozilla::PresShell> presShell = PresContext()->GetPresShell();
+  if (!presShell) {
+    return;
+  }
+
+  // Execute the oncommand event handler.
+  nsCOMPtr<nsIContent> content = mContent;
+  WidgetInputEvent* inputEvent = aEvent->AsInputEvent();
+  WidgetMouseEventBase* mouseEvent = aEvent->AsMouseEventBase();
+  nsContentUtils::DispatchXULCommand(
+      content, aEvent->IsTrusted(), nullptr, presShell, inputEvent->IsControl(),
+      inputEvent->IsAlt(), inputEvent->IsShift(), inputEvent->IsMeta(),
+      mouseEvent ? mouseEvent->mInputSource
+                 : MouseEvent_Binding::MOZ_SOURCE_UNKNOWN);
+}