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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 "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]; }
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