зеркало из https://github.com/mozilla/gecko-dev.git
81 строка
2.7 KiB
C++
81 строка
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 MOZILLA_A11Y_OUTERDOCACCESSIBLE_H_
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#define MOZILLA_A11Y_OUTERDOCACCESSIBLE_H_
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#include "AccessibleWrap.h"
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namespace mozilla {
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namespace dom {
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class BrowserBridgeChild;
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}
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namespace a11y {
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class DocAccessibleParent;
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/**
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* Used for <browser>, <frame>, <iframe>, <page> or editor> elements.
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*
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* In these variable names, "outer" relates to the OuterDocAccessible as
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* opposed to the DocAccessibleWrap which is "inner". The outer node is
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* a something like tags listed above, whereas the inner node corresponds to
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* the inner document root.
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*/
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class OuterDocAccessible final : public AccessibleWrap {
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public:
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OuterDocAccessible(nsIContent* aContent, DocAccessible* aDoc);
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NS_INLINE_DECL_REFCOUNTING_INHERITED(OuterDocAccessible, AccessibleWrap)
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DocAccessibleParent* RemoteChildDoc() const;
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/**
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* For iframes in a content process which will be rendered in another content
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* process, tell the parent process about this OuterDocAccessible
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* so it can link the trees together when the embedded document is added.
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* Note that an OuterDocAccessible can be created before the
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* BrowserBridgeChild or vice versa. Therefore, this must be conditionally
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* called when either of these is created.
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*/
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void SendEmbedderAccessible(dom::BrowserBridgeChild* aBridge);
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Maybe<nsMargin> GetCrossDocOffset() { return mCrossDocOffset; }
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void SetCrossDocOffset(nsMargin aMargin) { mCrossDocOffset = Some(aMargin); }
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// LocalAccessible
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virtual void Shutdown() override;
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virtual mozilla::a11y::role NativeRole() const override;
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virtual LocalAccessible* LocalChildAtPoint(
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int32_t aX, int32_t aY, EWhichChildAtPoint aWhichChild) override;
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virtual bool InsertChildAt(uint32_t aIdx, LocalAccessible* aChild) override;
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virtual bool RemoveChild(LocalAccessible* aAccessible) override;
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virtual bool IsAcceptableChild(nsIContent* aEl) const override;
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virtual uint32_t ChildCount() const override;
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// Accessible
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virtual Accessible* ChildAt(uint32_t aIndex) const override;
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virtual Accessible* ChildAtPoint(int32_t aX, int32_t aY,
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EWhichChildAtPoint aWhichChild) override;
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protected:
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virtual ~OuterDocAccessible() override;
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Maybe<nsMargin> mCrossDocOffset;
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};
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inline OuterDocAccessible* LocalAccessible::AsOuterDoc() {
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return IsOuterDoc() ? static_cast<OuterDocAccessible*>(this) : nullptr;
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}
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} // namespace a11y
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} // namespace mozilla
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#endif
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