1 files changed, 191 insertions, 0 deletions
diff --git a/widget/cocoa/nsMenuGroupOwnerX.mm b/widget/cocoa/nsMenuGroupOwnerX.mm
new file mode 100644
index 0000000000..9b5a222319
--- /dev/null
+++ b/widget/cocoa/nsMenuGroupOwnerX.mm
@@ -0,0 +1,191 @@
+/* -*- 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 "nsMenuGroupOwnerX.h"
+#include "nsMenuBarX.h"
+#include "nsMenuX.h"
+#include "nsMenuItemX.h"
+#include "nsMenuUtilsX.h"
+#include "nsCocoaUtils.h"
+#include "nsCocoaWindow.h"
+
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "nsObjCExceptions.h"
+#include "nsThreadUtils.h"
+
+#include "mozilla/dom/Element.h"
+#include "nsIWidget.h"
+#include "mozilla/dom/Document.h"
+
+#include "nsINode.h"
+
+using namespace mozilla;
+
+NS_IMPL_ISUPPORTS(nsMenuGroupOwnerX, nsIMutationObserver)
+
+nsMenuGroupOwnerX::nsMenuGroupOwnerX() : mCurrentCommandID(eCommand_ID_Last) {
+  mInfoSet = [[NSMutableSet setWithCapacity:10] retain];
+}
+
+nsMenuGroupOwnerX::~nsMenuGroupOwnerX() {
+  MOZ_ASSERT(mContentToObserverTable.Count() == 0, "have outstanding mutation observers!\n");
+
+  // The MenuItemInfo objects in mInfoSet may live longer than we do.  So when
+  // we get destroyed we need to invalidate all their mMenuGroupOwner pointers.
+  NSEnumerator* counter = [mInfoSet objectEnumerator];
+  MenuItemInfo* info;
+  while ((info = (MenuItemInfo*)[counter nextObject])) {
+    [info setMenuGroupOwner:nil];
+  }
+  [mInfoSet release];
+}
+
+nsresult nsMenuGroupOwnerX::Create(mozilla::dom::Element* aContent) {
+  if (!aContent) return NS_ERROR_INVALID_ARG;
+
+  mContent = aContent;
+
+  return NS_OK;
+}
+
+//
+// nsIMutationObserver
+//
+
+void nsMenuGroupOwnerX::CharacterDataWillChange(nsIContent* aContent,
+                                                const CharacterDataChangeInfo&) {}
+
+void nsMenuGroupOwnerX::CharacterDataChanged(nsIContent* aContent, const CharacterDataChangeInfo&) {
+}
+
+void nsMenuGroupOwnerX::ContentAppended(nsIContent* aFirstNewContent) {
+  for (nsIContent* cur = aFirstNewContent; cur; cur = cur->GetNextSibling()) {
+    ContentInserted(cur);
+  }
+}
+
+void nsMenuGroupOwnerX::NodeWillBeDestroyed(const nsINode* aNode) {}
+
+void nsMenuGroupOwnerX::AttributeWillChange(dom::Element* aContent, int32_t aNameSpaceID,
+                                            nsAtom* aAttribute, int32_t aModType) {}
+
+void nsMenuGroupOwnerX::NativeAnonymousChildListChange(nsIContent* aContent, bool aIsRemove) {}
+
+void nsMenuGroupOwnerX::AttributeChanged(dom::Element* aElement, int32_t aNameSpaceID,
+                                         nsAtom* aAttribute, int32_t aModType,
+                                         const nsAttrValue* aOldValue) {
+  nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
+  nsChangeObserver* obs = LookupContentChangeObserver(aElement);
+  if (obs) obs->ObserveAttributeChanged(aElement->OwnerDoc(), aElement, aAttribute);
+}
+
+void nsMenuGroupOwnerX::ContentRemoved(nsIContent* aChild, nsIContent* aPreviousSibling) {
+  nsIContent* container = aChild->GetParent();
+  if (!container) {
+    return;
+  }
+
+  nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
+  nsChangeObserver* obs = LookupContentChangeObserver(container);
+  if (obs)
+    obs->ObserveContentRemoved(aChild->OwnerDoc(), container, aChild, aPreviousSibling);
+  else if (container != mContent) {
+    // We do a lookup on the parent container in case things were removed
+    // under a "menupopup" item. That is basically a wrapper for the contents
+    // of a "menu" node.
+    nsCOMPtr<nsIContent> parent = container->GetParent();
+    if (parent) {
+      obs = LookupContentChangeObserver(parent);
+      if (obs)
+        obs->ObserveContentRemoved(aChild->OwnerDoc(), aChild->GetParent(), aChild,
+                                   aPreviousSibling);
+    }
+  }
+}
+
+void nsMenuGroupOwnerX::ContentInserted(nsIContent* aChild) {
+  nsIContent* container = aChild->GetParent();
+  if (!container) {
+    return;
+  }
+
+  nsCOMPtr<nsIMutationObserver> kungFuDeathGrip(this);
+  nsChangeObserver* obs = LookupContentChangeObserver(container);
+  if (obs)
+    obs->ObserveContentInserted(aChild->OwnerDoc(), container, aChild);
+  else if (container != mContent) {
+    // We do a lookup on the parent container in case things were removed
+    // under a "menupopup" item. That is basically a wrapper for the contents
+    // of a "menu" node.
+    nsCOMPtr<nsIContent> parent = container->GetParent();
+    if (parent) {
+      obs = LookupContentChangeObserver(parent);
+      if (obs) obs->ObserveContentInserted(aChild->OwnerDoc(), container, aChild);
+    }
+  }
+}
+
+void nsMenuGroupOwnerX::ParentChainChanged(nsIContent* aContent) {}
+
+// For change management, we don't use a |nsSupportsHashtable| because
+// we know that the lifetime of all these items is bounded by the
+// lifetime of the menubar. No need to add any more strong refs to the
+// picture because the containment hierarchy already uses strong refs.
+void nsMenuGroupOwnerX::RegisterForContentChanges(nsIContent* aContent,
+                                                  nsChangeObserver* aMenuObject) {
+  if (!mContentToObserverTable.Contains(aContent)) {
+    aContent->AddMutationObserver(this);
+  }
+  mContentToObserverTable.Put(aContent, aMenuObject);
+}
+
+void nsMenuGroupOwnerX::UnregisterForContentChanges(nsIContent* aContent) {
+  if (mContentToObserverTable.Contains(aContent)) {
+    aContent->RemoveMutationObserver(this);
+  }
+  mContentToObserverTable.Remove(aContent);
+}
+
+nsChangeObserver* nsMenuGroupOwnerX::LookupContentChangeObserver(nsIContent* aContent) {
+  nsChangeObserver* result;
+  if (mContentToObserverTable.Get(aContent, &result))
+    return result;
+  else
+    return nullptr;
+}
+
+// Given a menu item, creates a unique 4-character command ID and
+// maps it to the item. Returns the id for use by the client.
+uint32_t nsMenuGroupOwnerX::RegisterForCommand(nsMenuItemX* inMenuItem) {
+  // no real need to check for uniqueness. We always start afresh with each
+  // window at 1. Even if we did get close to the reserved Apple command id's,
+  // those don't start until at least '    ', which is integer 538976288. If
+  // we have that many menu items in one window, I think we have other
+  // problems.
+
+  // make id unique
+  ++mCurrentCommandID;
+
+  mCommandToMenuObjectTable.Put(mCurrentCommandID, inMenuItem);
+
+  return mCurrentCommandID;
+}
+
+// Removes the mapping between the given 4-character command ID
+// and its associated menu item.
+void nsMenuGroupOwnerX::UnregisterCommand(uint32_t inCommandID) {
+  mCommandToMenuObjectTable.Remove(inCommandID);
+}
+
+nsMenuItemX* nsMenuGroupOwnerX::GetMenuItemForCommandID(uint32_t inCommandID) {
+  nsMenuItemX* result;
+  if (mCommandToMenuObjectTable.Get(inCommandID, &result))
+    return result;
+  else
+    return nullptr;
+}
+
+void nsMenuGroupOwnerX::AddMenuItemInfoToSet(MenuItemInfo* info) { [mInfoSet addObject:info]; }