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/* -*- 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 TABLE_ACCESSIBLE_H
#define TABLE_ACCESSIBLE_H
#include "LocalAccessible.h"
#include "mozilla/a11y/TableAccessibleBase.h"
#include "mozilla/a11y/TableCellAccessibleBase.h"
#include "nsPointerHashKeys.h"
#include "nsRefPtrHashtable.h"
namespace mozilla {
namespace a11y {
/**
* Base class for LocalAccessible table implementations.
*/
class TableAccessible : public TableAccessibleBase {
public:
virtual LocalAccessible* Caption() const override { return nullptr; }
virtual LocalAccessible* CellAt(uint32_t aRowIdx, uint32_t aColIdx) override {
return nullptr;
}
virtual int32_t CellIndexAt(uint32_t aRowIdx, uint32_t aColIdx) override {
return ColCount() * aRowIdx + aColIdx;
}
virtual int32_t ColIndexAt(uint32_t aCellIdx) override;
virtual int32_t RowIndexAt(uint32_t aCellIdx) override;
virtual void RowAndColIndicesAt(uint32_t aCellIdx, int32_t* aRowIdx,
int32_t* aColIdx) override;
virtual bool IsProbablyLayoutTable() override;
virtual LocalAccessible* AsAccessible() override = 0;
using HeaderCache =
nsRefPtrHashtable<nsPtrHashKey<const TableCellAccessibleBase>,
LocalAccessible>;
/**
* Get the header cache, which maps a TableCellAccessible to its previous
* header.
* Although this data is only used in TableCellAccessible, it is stored on
* TableAccessible so the cache can be easily invalidated when the table
* is mutated.
*/
HeaderCache& GetHeaderCache() { return mHeaderCache; }
protected:
/**
* Return row accessible at the given row index.
*/
LocalAccessible* RowAt(int32_t aRow);
/**
* Return cell accessible at the given column index in the row.
*/
LocalAccessible* CellInRowAt(LocalAccessible* aRow, int32_t aColumn);
private:
HeaderCache mHeaderCache;
};
} // namespace a11y
} // namespace mozilla
#endif
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