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/* 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/. */
#ifndef __nsMenu_h__
#define __nsMenu_h__
#include "mozilla/Attributes.h"
#include "mozilla/UniquePtr.h"
#include "nsCOMPtr.h"
#include "nsDbusmenu.h"
#include "nsMenuContainer.h"
#include "nsMenuObject.h"
#include <glib.h>
class nsIAtom;
class nsIContent;
class nsITimer;
class nsStyleContext;
#define NSMENU_NUMBER_OF_POPUPSTATE_BITS 2U
#define NSMENU_NUMBER_OF_FLAGS 4U
// This class represents a menu
class nsMenu final : public nsMenuContainer {
public:
nsMenu(nsMenuContainer* aParent, nsIContent* aContent);
~nsMenu();
nsMenuObject::EType Type() const override;
bool IsBeingDisplayed() const override;
bool NeedsRebuild() const override;
// Tell the desktop shell to display this menu
void OpenMenu();
// Normally called via the shell, but it's public so that child
// menuitems can do the shells work. Sigh....
void OnClose();
private:
friend class nsMenuContentInsertedEvent;
friend class nsMenuContentRemovedEvent;
enum EPopupState {
ePopupState_Closed,
ePopupState_Showing,
ePopupState_Open,
ePopupState_Hiding
};
void SetPopupState(EPopupState aState);
static void DoOpenCallback(nsITimer* aTimer, void* aClosure);
static void menu_event_cb(DbusmenuMenuitem* menu,
const gchar* name,
GVariant* value,
guint timestamp,
gpointer user_data);
// We add a placeholder item to empty menus so that Unity actually treats
// us as a proper menu, rather than a menuitem without a submenu
void MaybeAddPlaceholderItem();
// Removes a placeholder item if it exists and asserts that this succeeds
void EnsureNoPlaceholderItem();
void OnOpen();
void Build();
void InitializePopup();
void RemoveChildAt(size_t aIndex);
void RemoveChild(nsIContent* aChild);
void InsertChildAfter(mozilla::UniquePtr<nsMenuObject> aChild,
nsIContent* aPrevSibling);
void AppendChild(mozilla::UniquePtr<nsMenuObject> aChild);
bool IsInBatchedUpdate() const;
void StructureMutated();
bool CanOpen() const;
void HandleContentInserted(nsIContent* aContainer,
nsIContent* aChild,
nsIContent* aPrevSibling);
void HandleContentRemoved(nsIContent* aContainer,
nsIContent* aChild);
void InitializeNativeData() override;
void Update(nsStyleContext* aStyleContext) override;
nsMenuObject::PropertyFlags SupportedProperties() const override;
void OnAttributeChanged(nsIContent* aContent, nsIAtom* aAttribute) override;
void OnContentInserted(nsIContent* aContainer, nsIContent* aChild,
nsIContent* aPrevSibling) override;
void OnContentRemoved(nsIContent* aContainer, nsIContent* aChild) override;
void OnBeginUpdates(nsIContent* aContent) override;
void OnEndUpdates() override;
bool mNeedsRebuild;
bool mNeedsUpdate;
DbusmenuMenuitem* mPlaceholderItem;
EPopupState mPopupState;
enum EBatchedUpdateState {
eBatchedUpdateState_Inactive,
eBatchedUpdateState_Active,
eBatchedUpdateState_DidMutate
};
EBatchedUpdateState mBatchedUpdateState;
nsCOMPtr<nsIContent> mPopupContent;
nsCOMPtr<nsITimer> mOpenDelayTimer;
};
#endif /* __nsMenu_h__ */
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