1 files changed, 136 insertions, 0 deletions
diff --git a/layout/xul/nsMenuBarFrame.cpp b/layout/xul/nsMenuBarFrame.cpp
new file mode 100644
index 0000000000..914f12085e
--- /dev/null
+++ b/layout/xul/nsMenuBarFrame.cpp
@@ -0,0 +1,136 @@
+/* -*- 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 "nsMenuBarFrame.h"
+#include "mozilla/BasicEvents.h"
+#include "nsIContent.h"
+#include "nsAtom.h"
+#include "nsPresContext.h"
+#include "nsCSSRendering.h"
+#include "nsNameSpaceManager.h"
+#include "nsGkAtoms.h"
+#include "nsMenuPopupFrame.h"
+#include "nsUnicharUtils.h"
+#include "nsPIDOMWindow.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsCSSFrameConstructor.h"
+#ifdef XP_WIN
+#  include "nsISound.h"
+#  include "nsWidgetsCID.h"
+#endif
+#include "nsUTF8Utils.h"
+#include "mozilla/ComputedStyle.h"
+#include "mozilla/PresShell.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/XULMenuParentElement.h"
+#include "mozilla/dom/XULButtonElement.h"
+
+using namespace mozilla;
+
+//
+// NS_NewMenuBarFrame
+//
+// Wrapper for creating a new menu Bar container
+//
+nsIFrame* NS_NewMenuBarFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
+  return new (aPresShell) nsMenuBarFrame(aStyle, aPresShell->GetPresContext());
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsMenuBarFrame)
+
+NS_QUERYFRAME_HEAD(nsMenuBarFrame)
+  NS_QUERYFRAME_ENTRY(nsMenuBarFrame)
+NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame)
+
+//
+// nsMenuBarFrame cntr
+//
+nsMenuBarFrame::nsMenuBarFrame(ComputedStyle* aStyle,
+                               nsPresContext* aPresContext)
+    : nsBoxFrame(aStyle, aPresContext, kClassID) {}
+
+void nsMenuBarFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
+                          nsIFrame* aPrevInFlow) {
+  nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
+
+  // Create the menu bar listener.
+  mMenuBarListener = new nsMenuBarListener(this, aContent);
+}
+
+dom::XULMenuParentElement& nsMenuBarFrame::MenubarElement() const {
+  auto* content = dom::XULMenuParentElement::FromNode(GetContent());
+  MOZ_DIAGNOSTIC_ASSERT(content);
+  return *content;
+}
+
+MOZ_CAN_RUN_SCRIPT void nsMenuBarFrame::SetActive(bool aActiveFlag) {
+  // If the activity is not changed, there is nothing to do.
+  if (mIsActive == aActiveFlag) {
+    return;
+  }
+
+  if (!aActiveFlag) {
+    // If there is a request to deactivate the menu bar, check to see whether
+    // there is a menu popup open for the menu bar. In this case, don't
+    // deactivate the menu bar.
+    if (auto* activeChild = MenubarElement().GetActiveMenuChild()) {
+      if (activeChild->IsMenuPopupOpen()) {
+        return;
+      }
+    }
+  }
+
+  mIsActive = aActiveFlag;
+  if (mIsActive) {
+    InstallKeyboardNavigator();
+  } else {
+    mActiveByKeyboard = false;
+    RemoveKeyboardNavigator();
+  }
+
+  RefPtr menubar = &MenubarElement();
+  if (!aActiveFlag) {
+    menubar->SetActiveMenuChild(nullptr);
+  }
+
+  constexpr auto active = u"DOMMenuBarActive"_ns;
+  constexpr auto inactive = u"DOMMenuBarInactive"_ns;
+  FireDOMEvent(aActiveFlag ? active : inactive, menubar);
+}
+
+void nsMenuBarFrame::InstallKeyboardNavigator() {
+  if (nsXULPopupManager* pm = nsXULPopupManager::GetInstance()) {
+    pm->SetActiveMenuBar(this, true);
+  }
+}
+
+void nsMenuBarFrame::MenuClosed() { SetActive(false); }
+
+void nsMenuBarFrame::HandleEnterKeyPress(WidgetEvent& aEvent) {
+  if (RefPtr<dom::XULButtonElement> activeChild =
+          MenubarElement().GetActiveMenuChild()) {
+    activeChild->HandleEnterKeyPress(aEvent);
+  }
+}
+
+void nsMenuBarFrame::RemoveKeyboardNavigator() {
+  if (!mIsActive) {
+    if (nsXULPopupManager* pm = nsXULPopupManager::GetInstance()) {
+      pm->SetActiveMenuBar(this, false);
+    }
+  }
+}
+
+void nsMenuBarFrame::DestroyFrom(nsIFrame* aDestructRoot,
+                                 PostDestroyData& aPostDestroyData) {
+  nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
+  if (pm) pm->SetActiveMenuBar(this, false);
+
+  mMenuBarListener->OnDestroyMenuBarFrame();
+  mMenuBarListener = nullptr;
+
+  nsBoxFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
+}