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Diffstat (limited to 'widget/cocoa/nsMenuGroupOwnerX.mm')
| -rw-r--r-- | widget/cocoa/nsMenuGroupOwnerX.mm | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/widget/cocoa/nsMenuGroupOwnerX.mm b/widget/cocoa/nsMenuGroupOwnerX.mm new file mode 100644 index 0000000000..e7a0d2cf87 --- /dev/null +++ b/widget/cocoa/nsMenuGroupOwnerX.mm @@ -0,0 +1,226 @@ +/* -*- 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, nsIObserver, nsIMutationObserver) + +nsMenuGroupOwnerX::nsMenuGroupOwnerX(mozilla::dom::Element* aElement, nsMenuBarX* aMenuBarIfMenuBar) + : mContent(aElement), mMenuBar(aMenuBarIfMenuBar) { + mRepresentedObject = [[MOZMenuItemRepresentedObject alloc] initWithMenuGroupOwner:this]; +} + +nsMenuGroupOwnerX::~nsMenuGroupOwnerX() { + MOZ_ASSERT(mContentToObserverTable.Count() == 0, "have outstanding mutation observers!\n"); + [mRepresentedObject setMenuGroupOwner:nullptr]; + [mRepresentedObject release]; +} + +// +// 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(nsINode* aNode) {} + +void nsMenuGroupOwnerX::AttributeWillChange(dom::Element* aElement, int32_t aNameSpaceID, + nsAtom* aAttribute, int32_t aModType) {} + +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(), container, 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) {} + +void nsMenuGroupOwnerX::ARIAAttributeDefaultWillChange(mozilla::dom::Element* aElement, + nsAtom* aAttribute, int32_t aModType) {} + +void nsMenuGroupOwnerX::ARIAAttributeDefaultChanged(mozilla::dom::Element* aElement, + nsAtom* aAttribute, int32_t aModType) {} + +// 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.InsertOrUpdate(aContent, aMenuObject); +} + +void nsMenuGroupOwnerX::UnregisterForContentChanges(nsIContent* aContent) { + if (mContentToObserverTable.Contains(aContent)) { + aContent->RemoveMutationObserver(this); + } + mContentToObserverTable.Remove(aContent); +} + +void nsMenuGroupOwnerX::RegisterForLocaleChanges() { + nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService(); + if (obs) { + obs->AddObserver(this, "intl:app-locales-changed", false); + } +} + +void nsMenuGroupOwnerX::UnregisterForLocaleChanges() { + nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService(); + if (obs) { + obs->RemoveObserver(this, "intl:app-locales-changed"); + } +} + +NS_IMETHODIMP +nsMenuGroupOwnerX::Observe(nsISupports* aSubject, const char* aTopic, const char16_t* aData) { + if (mMenuBar && !strcmp(aTopic, "intl:app-locales-changed")) { + // Rebuild the menu with the new locale strings. + mMenuBar->SetNeedsRebuild(); + } + return NS_OK; +} + +nsChangeObserver* nsMenuGroupOwnerX::LookupContentChangeObserver(nsIContent* aContent) { + nsChangeObserver* result; + if (mContentToObserverTable.Get(aContent, &result)) { + return result; + } + 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* aMenuItem) { + // 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.InsertOrUpdate(mCurrentCommandID, aMenuItem); + + return mCurrentCommandID; +} + +// Removes the mapping between the given 4-character command ID +// and its associated menu item. +void nsMenuGroupOwnerX::UnregisterCommand(uint32_t aCommandID) { + mCommandToMenuObjectTable.Remove(aCommandID); +} + +nsMenuItemX* nsMenuGroupOwnerX::GetMenuItemForCommandID(uint32_t aCommandID) { + nsMenuItemX* result; + if (mCommandToMenuObjectTable.Get(aCommandID, &result)) { + return result; + } + return nullptr; +} + +@implementation MOZMenuItemRepresentedObject { + nsMenuGroupOwnerX* mMenuGroupOwner; // weak, cleared by nsMenuGroupOwnerX's destructor +} + +- (id)initWithMenuGroupOwner:(nsMenuGroupOwnerX*)aMenuGroupOwner { + self = [super init]; + mMenuGroupOwner = aMenuGroupOwner; + return self; +} + +- (void)setMenuGroupOwner:(nsMenuGroupOwnerX*)aMenuGroupOwner { + mMenuGroupOwner = aMenuGroupOwner; +} + +- (nsMenuGroupOwnerX*)menuGroupOwner { + return mMenuGroupOwner; +} + +@end |