| /* |
| * Copyright (C) 2019 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #if ENABLE(ACCESSIBILITY_ISOLATED_TREE) |
| |
| #include "AXIsolatedTreeNode.h" |
| #include "PageIdentifier.h" |
| #include <wtf/HashMap.h> |
| #include <wtf/RefPtr.h> |
| #include <wtf/ThreadSafeRefCounted.h> |
| |
| namespace WebCore { |
| |
| class Page; |
| |
| class AXIsolatedTree : public ThreadSafeRefCounted<AXIsolatedTree>, public CanMakeWeakPtr<AXIsolatedTree> { |
| WTF_MAKE_NONCOPYABLE(AXIsolatedTree); WTF_MAKE_FAST_ALLOCATED; |
| |
| public: |
| static Ref<AXIsolatedTree> create(); |
| virtual ~AXIsolatedTree(); |
| |
| static Ref<AXIsolatedTree> createTreeForPageID(PageIdentifier); |
| WEBCORE_EXPORT static Ref<AXIsolatedTree> initializePageTreeForID(PageIdentifier, AXObjectCache&); |
| WEBCORE_EXPORT static RefPtr<AXIsolatedTree> treeForPageID(PageIdentifier); |
| WEBCORE_EXPORT static RefPtr<AXIsolatedTree> treeForID(AXIsolatedTreeID); |
| |
| WEBCORE_EXPORT RefPtr<AXIsolatedTreeNode> rootNode(); |
| WEBCORE_EXPORT RefPtr<AXIsolatedTreeNode> focusedUIElement(); |
| RefPtr<AXIsolatedTreeNode> nodeForID(AXID) const; |
| static RefPtr<AXIsolatedTreeNode> nodeInTreeForID(AXIsolatedTreeID, AXID); |
| |
| // Call on main thread |
| void appendNodeChanges(Vector<Ref<AXIsolatedTreeNode>>&); |
| void removeNode(AXID); |
| |
| void setRootNodeID(AXID); |
| void setFocusedNodeID(AXID); |
| |
| // Call on AX thread |
| WEBCORE_EXPORT void applyPendingChanges(); |
| |
| WEBCORE_EXPORT void setInitialRequestInProgress(bool); |
| AXIsolatedTreeID treeIdentifier() const { return m_treeID; } |
| |
| private: |
| AXIsolatedTree(); |
| |
| static HashMap<AXIsolatedTreeID, Ref<AXIsolatedTree>>& treeIDCache(); |
| static HashMap<PageIdentifier, Ref<AXIsolatedTree>>& treePageCache(); |
| |
| // Only access on AX thread requesting data. |
| HashMap<AXID, Ref<AXIsolatedTreeNode>> m_readerThreadNodeMap; |
| |
| // Written to by main thread under lock, accessed and applied by AX thread. |
| Vector<Ref<AXIsolatedTreeNode>> m_pendingAppends; |
| Vector<AXID> m_pendingRemovals; |
| AXID m_pendingFocusedNodeID; |
| AXID m_pendingRootNodeID; |
| Lock m_changeLogLock; |
| |
| AXIsolatedTreeID m_treeID; |
| AXID m_rootNodeID { InvalidAXID }; |
| AXID m_focusedNodeID { InvalidAXID }; |
| bool m_initialRequestInProgress; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif |