124 lines
3.7 KiB
C++
124 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef __nsMenu_h__
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#define __nsMenu_h__
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#include "mozilla/Attributes.h"
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#include "mozilla/UniquePtr.h"
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#include "nsCOMPtr.h"
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#include "nsDbusmenu.h"
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#include "nsMenuContainer.h"
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#include "nsMenuObject.h"
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#include <glib.h>
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class nsAtom;
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class nsIContent;
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class nsITimer;
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#define NSMENU_NUMBER_OF_POPUPSTATE_BITS 2U
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#define NSMENU_NUMBER_OF_FLAGS 4U
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// This class represents a menu
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class nsMenu final : public nsMenuContainer
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{
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public:
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nsMenu(nsMenuContainer *aParent, nsIContent *aContent);
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~nsMenu();
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nsMenuObject::EType Type() const override;
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bool IsBeingDisplayed() const override;
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bool NeedsRebuild() const override;
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// Tell the desktop shell to display this menu
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void OpenMenu();
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// Normally called via the shell, but it's public so that child
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// menuitems can do the shells work. Sigh....
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void OnClose();
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private:
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friend class nsMenuContentInsertedEvent;
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friend class nsMenuContentRemovedEvent;
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enum EPopupState {
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ePopupState_Closed,
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ePopupState_Showing,
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ePopupState_Open,
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ePopupState_Hiding
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};
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void SetPopupState(EPopupState aState);
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static void DoOpenCallback(nsITimer *aTimer, void *aClosure);
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static void menu_event_cb(DbusmenuMenuitem *menu,
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const gchar *name,
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GVariant *value,
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guint timestamp,
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gpointer user_data);
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// We add a placeholder item to empty menus so that Unity actually treats
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// us as a proper menu, rather than a menuitem without a submenu
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void MaybeAddPlaceholderItem();
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// Removes a placeholder item if it exists and asserts that this succeeds
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void EnsureNoPlaceholderItem();
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void OnOpen();
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void Build();
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void InitializePopup();
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void RemoveChildAt(size_t aIndex);
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void RemoveChild(nsIContent *aChild);
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void InsertChildAfter(mozilla::UniquePtr<nsMenuObject> aChild,
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nsIContent *aPrevSibling);
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void AppendChild(mozilla::UniquePtr<nsMenuObject> aChild);
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bool IsInBatchedUpdate() const;
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void StructureMutated();
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bool CanOpen() const;
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void HandleContentInserted(nsIContent *aContainer,
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nsIContent *aChild,
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nsIContent *aPrevSibling);
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void HandleContentRemoved(nsIContent *aContainer,
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nsIContent *aChild);
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void InitializeNativeData() override;
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void Update(const mozilla::ComputedStyle *aComputedStyle) override;
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nsMenuObject::PropertyFlags SupportedProperties() const override;
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void OnAttributeChanged(nsIContent *aContent, nsAtom *aAttribute) override;
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void OnContentInserted(nsIContent *aContainer, nsIContent *aChild,
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nsIContent *aPrevSibling) override;
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void OnContentRemoved(nsIContent *aContainer, nsIContent *aChild) override;
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void OnBeginUpdates(nsIContent *aContent) override;
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void OnEndUpdates() override;
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bool mNeedsRebuild;
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bool mNeedsUpdate;
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DbusmenuMenuitem *mPlaceholderItem;
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EPopupState mPopupState;
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enum EBatchedUpdateState {
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eBatchedUpdateState_Inactive,
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eBatchedUpdateState_Active,
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eBatchedUpdateState_DidMutate
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};
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EBatchedUpdateState mBatchedUpdateState;
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nsCOMPtr<nsIContent> mPopupContent;
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nsCOMPtr<nsITimer> mOpenDelayTimer;
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};
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#endif /* __nsMenu_h__ */
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