From ad18d877ddd2a44d98fa12ccd3dbbcf4d0ac4299 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- accessible/generic/BaseAccessibles.h | 132 +++++++++++++++++++++++++++++++++++ 1 file changed, 132 insertions(+) create mode 100644 accessible/generic/BaseAccessibles.h (limited to 'accessible/generic/BaseAccessibles.h') diff --git a/accessible/generic/BaseAccessibles.h b/accessible/generic/BaseAccessibles.h new file mode 100644 index 000000000..e4c71c423 --- /dev/null +++ b/accessible/generic/BaseAccessibles.h @@ -0,0 +1,132 @@ +/* -*- 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/. */ + +#ifndef mozilla_a11y_BaseAccessibles_h__ +#define mozilla_a11y_BaseAccessibles_h__ + +#include "AccessibleWrap.h" +#include "HyperTextAccessibleWrap.h" + +class nsIContent; + +/** + * This file contains a number of classes that are used as base + * classes for the different accessibility implementations of + * the HTML and XUL widget sets. --jgaunt + */ + +namespace mozilla { +namespace a11y { + +/** + * Leaf version of DOM Accessible -- has no children + */ +class LeafAccessible : public AccessibleWrap +{ +public: + + LeafAccessible(nsIContent* aContent, DocAccessible* aDoc); + + // nsISupports + NS_DECL_ISUPPORTS_INHERITED + + // Accessible + virtual Accessible* ChildAtPoint(int32_t aX, int32_t aY, + EWhichChildAtPoint aWhichChild) override; + virtual bool InsertChildAt(uint32_t aIndex, Accessible* aChild) override final; + virtual bool RemoveChild(Accessible* aChild) override final; + + virtual bool IsAcceptableChild(nsIContent* aEl) const override; + +protected: + virtual ~LeafAccessible() {} +}; + +/** + * Used for text or image accessible nodes contained by link accessibles or + * accessibles for nodes with registered click event handler. It knows how to + * report the state of the host link (traveled or not) and can activate (click) + * the host accessible programmatically. + */ +class LinkableAccessible : public AccessibleWrap +{ +public: + enum { eAction_Jump = 0 }; + + LinkableAccessible(nsIContent* aContent, DocAccessible* aDoc) : + AccessibleWrap(aContent, aDoc) + { + } + + NS_DECL_ISUPPORTS_INHERITED + + // Accessible + virtual void Value(nsString& aValue) override; + virtual uint64_t NativeLinkState() const override; + virtual void TakeFocus() override; + + // ActionAccessible + virtual uint8_t ActionCount() override; + virtual void ActionNameAt(uint8_t aIndex, nsAString& aName) override; + virtual bool DoAction(uint8_t index) override; + virtual KeyBinding AccessKey() const override; + + // ActionAccessible helpers + Accessible* ActionWalk(bool* aIsLink = nullptr, + bool* aIsOnclick = nullptr, + bool* aIsLabelWithControl = nullptr); + // HyperLinkAccessible + virtual already_AddRefed AnchorURIAt(uint32_t aAnchorIndex) override; + +protected: + virtual ~LinkableAccessible() {} + +}; + +/** + * A simple accessible that gets its enumerated role. + */ +template +class EnumRoleAccessible : public AccessibleWrap +{ +public: + EnumRoleAccessible(nsIContent* aContent, DocAccessible* aDoc) : + AccessibleWrap(aContent, aDoc) { } + + NS_IMETHOD QueryInterface(REFNSIID aIID, void** aPtr) override + { return Accessible::QueryInterface(aIID, aPtr); } + + // Accessible + virtual a11y::role NativeRole() override { return R; } + +protected: + virtual ~EnumRoleAccessible() { } +}; + + +/** + * A wrapper accessible around native accessible to connect it with + * crossplatform accessible tree. + */ +class DummyAccessible : public AccessibleWrap +{ +public: + explicit DummyAccessible(DocAccessible* aDocument = nullptr) : + AccessibleWrap(nullptr, aDocument) { } + + virtual uint64_t NativeState() override final; + virtual uint64_t NativeInteractiveState() const override final; + virtual uint64_t NativeLinkState() const override final; + virtual bool NativelyUnavailable() const override final; + virtual void ApplyARIAState(uint64_t* aState) const override final; + +protected: + virtual ~DummyAccessible() { } +}; + +} // namespace a11y +} // namespace mozilla + +#endif -- cgit v1.2.3