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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
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Add m-esr52 at 52.6.0
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+/* -*- 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<nsIURI> AnchorURIAt(uint32_t aAnchorIndex) override;
+
+protected:
+ virtual ~LinkableAccessible() {}
+
+};
+
+/**
+ * A simple accessible that gets its enumerated role.
+ */
+template<a11y::role R>
+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