зеркало из https://github.com/mozilla/gecko-dev.git
82 строки
2.7 KiB
C++
82 строки
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 __nsIRollupListener_h__
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#define __nsIRollupListener_h__
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#include "nsTArray.h"
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#include "nsPoint.h"
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#include "Units.h"
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class nsIContent;
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class nsIWidget;
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class nsIRollupListener {
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public:
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enum class FlushViews : bool { No, Yes };
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enum class AllowAnimations : bool { No, Yes };
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struct RollupOptions {
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// aCount is the number of popups in a chain to close. If this is
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// zero, then all popups are closed.
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uint32_t mCount = 0;
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// If this is true, then views should be flushed after the rollup.
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FlushViews mFlush = FlushViews::No;
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// This is the mouse pointer position where the event that triggered the
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// rollup occurred, which may be nullptr.
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const mozilla::LayoutDeviceIntPoint* mPoint = nullptr;
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// Whether to allow panel animations.
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AllowAnimations mAllowAnimations = AllowAnimations::Yes;
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};
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/**
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* Notifies the object to rollup, optionally returning the node that
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* was just rolled up in aLastRolledUp, if non-null.
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*
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* aLastRolledUp is not addrefed.
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*
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* Returns true if the event that the caller is processing should be consumed.
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*/
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MOZ_CAN_RUN_SCRIPT_BOUNDARY
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virtual bool Rollup(const RollupOptions&,
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nsIContent** aLastRolledUp = nullptr) = 0;
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/**
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* Asks the RollupListener if it should rollup on mouse wheel events
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*/
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virtual bool ShouldRollupOnMouseWheelEvent() = 0;
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/**
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* Asks the RollupListener if it should consume mouse wheel events
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*/
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virtual bool ShouldConsumeOnMouseWheelEvent() = 0;
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/**
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* Asks the RollupListener if it should rollup on mouse activate, eg. X-Mouse
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*/
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virtual bool ShouldRollupOnMouseActivate() = 0;
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/*
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* Retrieve the widgets for open menus and store them in the array
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* aWidgetChain. The number of menus of the same type should be returned,
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* for example, if a context menu is open, return only the number of menus
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* that are part of the context menu chain. This allows closing up only
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* those menus in different situations. The returned value should be exactly
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* the same number of widgets added to aWidgetChain.
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*/
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virtual uint32_t GetSubmenuWidgetChain(
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nsTArray<nsIWidget*>* aWidgetChain) = 0;
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virtual nsIWidget* GetRollupWidget() = 0;
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/**
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* If a native menu is currently shown, closes the menu.
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* Returns true if a native menu was open.
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*/
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virtual bool RollupNativeMenu() { return false; }
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};
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#endif /* __nsIRollupListener_h__ */
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