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Diffstat (limited to 'accessible/ipc/DocAccessibleChild.h')
| -rw-r--r-- | accessible/ipc/DocAccessibleChild.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/accessible/ipc/DocAccessibleChild.h b/accessible/ipc/DocAccessibleChild.h new file mode 100644 index 0000000000..0a6164cce8 --- /dev/null +++ b/accessible/ipc/DocAccessibleChild.h @@ -0,0 +1,176 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=2 et sw=2 tw=80: */ +/* 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_DocAccessibleChild_h +#define mozilla_a11y_DocAccessibleChild_h + +#include "mozilla/a11y/DocAccessible.h" +#include "mozilla/a11y/PDocAccessibleChild.h" +#include "mozilla/Unused.h" +#include "nsISupportsImpl.h" + +namespace mozilla { +namespace a11y { + +class LocalAccessible; +class AccShowEvent; + +/** + * These objects handle content side communication for an accessible document, + * and their lifetime is the same as the document they represent. + */ +class DocAccessibleChild : public PDocAccessibleChild { + public: + DocAccessibleChild(DocAccessible* aDoc, IProtocol* aManager) : mDoc(aDoc) { + MOZ_COUNT_CTOR(DocAccessibleChild); + SetManager(aManager); + } + + ~DocAccessibleChild() { + // Shutdown() should have been called, but maybe it isn't if the process is + // killed? + MOZ_ASSERT(!mDoc); + if (mDoc) { + mDoc->SetIPCDoc(nullptr); + } + + MOZ_COUNT_DTOR(DocAccessibleChild); + } + + virtual void Shutdown() { + DetachDocument(); + SendShutdown(); + } + + /** + * Serializes a shown tree and sends it to the chrome process. + */ + void InsertIntoIpcTree(LocalAccessible* aChild, bool aSuppressShowEvent); + void ShowEvent(AccShowEvent* aShowEvent); + + virtual void ActorDestroy(ActorDestroyReason) override { + if (!mDoc) { + return; + } + + mDoc->SetIPCDoc(nullptr); + mDoc = nullptr; + } + + virtual mozilla::ipc::IPCResult RecvTakeFocus(const uint64_t& aID) override; + + MOZ_CAN_RUN_SCRIPT_BOUNDARY + virtual mozilla::ipc::IPCResult RecvScrollTo( + const uint64_t& aID, const uint32_t& aScrollType) override; + + virtual mozilla::ipc::IPCResult RecvTakeSelection( + const uint64_t& aID) override; + virtual mozilla::ipc::IPCResult RecvSetSelected(const uint64_t& aID, + const bool& aSelect) override; + + virtual mozilla::ipc::IPCResult RecvVerifyCache( + const uint64_t& aID, const uint64_t& aCacheDomain, + AccAttributes* aFields) override; + + virtual mozilla::ipc::IPCResult RecvDoActionAsync( + const uint64_t& aID, const uint8_t& aIndex) override; + + virtual mozilla::ipc::IPCResult RecvSetCaretOffset( + const uint64_t& aID, const int32_t& aOffset) override; + + MOZ_CAN_RUN_SCRIPT_BOUNDARY + virtual mozilla::ipc::IPCResult RecvSetTextSelection( + const uint64_t& aStartID, const int32_t& aStartOffset, + const uint64_t& aEndID, const int32_t& aEndOffset, + const int32_t& aSelectionNum) override; + + MOZ_CAN_RUN_SCRIPT_BOUNDARY + virtual mozilla::ipc::IPCResult RecvScrollTextLeafRangeIntoView( + const uint64_t& aStartID, const int32_t& aStartOffset, + const uint64_t& aEndID, const int32_t& aEndOffset, + const uint32_t& aScrollType) override; + + virtual mozilla::ipc::IPCResult RecvRemoveTextSelection( + const uint64_t& aID, const int32_t& aSelectionNum) override; + + virtual mozilla::ipc::IPCResult RecvSetCurValue( + const uint64_t& aID, const double& aValue) override; + + virtual mozilla::ipc::IPCResult RecvReplaceText( + const uint64_t& aID, const nsAString& aText) override; + + virtual mozilla::ipc::IPCResult RecvInsertText( + const uint64_t& aID, const nsAString& aText, + const int32_t& aPosition) override; + + virtual mozilla::ipc::IPCResult RecvCopyText(const uint64_t& aID, + const int32_t& aStartPos, + const int32_t& aEndPos) override; + + virtual mozilla::ipc::IPCResult RecvCutText(const uint64_t& aID, + const int32_t& aStartPos, + const int32_t& aEndPos) override; + + virtual mozilla::ipc::IPCResult RecvDeleteText( + const uint64_t& aID, const int32_t& aStartPos, + const int32_t& aEndPos) override; + + MOZ_CAN_RUN_SCRIPT_BOUNDARY + virtual mozilla::ipc::IPCResult RecvPasteText( + const uint64_t& aID, const int32_t& aPosition) override; + + virtual mozilla::ipc::IPCResult RecvRestoreFocus() override; + + virtual mozilla::ipc::IPCResult RecvScrollToPoint(const uint64_t& aID, + const uint32_t& aScrollType, + const int32_t& aX, + const int32_t& aY) override; + + bool SendCaretMoveEvent(const uint64_t& aID, const int32_t& aOffset, + const bool& aIsSelectionCollapsed, + const bool& aIsAtEndOfLine, + const int32_t& aGranularity, bool aFromUser); + bool SendFocusEvent(const uint64_t& aID); + +#if !defined(XP_WIN) + virtual mozilla::ipc::IPCResult RecvAnnounce( + const uint64_t& aID, const nsAString& aAnnouncement, + const uint16_t& aPriority) override; +#endif // !defined(XP_WIN) + + virtual mozilla::ipc::IPCResult RecvScrollSubstringToPoint( + const uint64_t& aID, const int32_t& aStartOffset, + const int32_t& aEndOffset, const uint32_t& aCoordinateType, + const int32_t& aX, const int32_t& aY) override; + + private: + LayoutDeviceIntRect GetCaretRectFor(const uint64_t& aID); + + protected: + static void FlattenTree(LocalAccessible* aRoot, + nsTArray<LocalAccessible*>& aTree); + + static AccessibleData SerializeAcc(LocalAccessible* aAcc); + + void DetachDocument() { + if (mDoc) { + mDoc->SetIPCDoc(nullptr); + mDoc = nullptr; + } + } + + LocalAccessible* IdToAccessible(const uint64_t& aID) const; + HyperTextAccessible* IdToHyperTextAccessible(const uint64_t& aID) const; + + DocAccessible* mDoc; + + friend void DocAccessible::DoInitialUpdate(); +}; + +} // namespace a11y +} // namespace mozilla + +#endif // mozilla_a11y_DocAccessibleChild_h |