gecko-dev/accessible/android/DocAccessibleWrap.h
Eitan Isaacson 5f6ff669bf Bug 1616146 - Cache accessibility focus boundaries in java. r=Jamie
This allows `performAction` to immediately return false if a boundary is
reached and allow TalkBack to navigate past the web view.

Change viewport cache listener to reorder since it should catch all tree
mutations in the document.

Differential Revision: https://phabricator.services.mozilla.com/D63117

--HG--
extra : moz-landing-system : lando
2020-02-18 21:09:06 +00:00

70 lines
1.7 KiB
C++

/* -*- 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_DocAccessibleWrap_h__
#define mozilla_a11y_DocAccessibleWrap_h__
#include "DocAccessible.h"
#include "nsITimer.h"
namespace mozilla {
class PresShell;
namespace a11y {
class DocAccessibleWrap : public DocAccessible {
public:
DocAccessibleWrap(Document* aDocument, PresShell* aPresShell);
virtual ~DocAccessibleWrap();
virtual nsresult HandleAccEvent(AccEvent* aEvent) override;
/**
* Manage the mapping from id to Accessible.
*/
void AddID(uint32_t aID, AccessibleWrap* aAcc) {
mIDToAccessibleMap.Put(aID, aAcc);
}
void RemoveID(uint32_t aID) { mIDToAccessibleMap.Remove(aID); }
AccessibleWrap* GetAccessibleByID(int32_t aID) const;
DocAccessibleWrap* GetTopLevelContentDoc(AccessibleWrap* aAccessible);
void CacheFocusPath(AccessibleWrap* aAccessible);
void CacheViewport(bool aCachePivotBoundaries);
enum {
eBatch_Viewport = 0,
eBatch_FocusPath = 1,
eBatch_BoundsUpdate = 2,
};
protected:
/*
* This provides a mapping from 32 bit id to accessible objects.
*/
nsDataHashtable<nsUint32HashKey, AccessibleWrap*> mIDToAccessibleMap;
virtual void DoInitialUpdate() override;
private:
void UpdateFocusPathBounds();
static void CacheViewportCallback(nsITimer* aTimer, void* aDocAccParam);
nsCOMPtr<nsITimer> mCacheRefreshTimer;
bool mCachePivotBoundaries;
AccessibleHashtable mFocusPath;
};
} // namespace a11y
} // namespace mozilla
#endif