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/* 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 AccGroupInfo_h_
#define AccGroupInfo_h_
#include "Accessible-inl.h"
namespace mozilla {
namespace a11y {
/**
* Calculate and store group information.
*/
class AccGroupInfo
{
public:
~AccGroupInfo() { MOZ_COUNT_DTOR(AccGroupInfo); }
/**
* Return 1-based position in the group.
*/
uint32_t PosInSet() const { return mPosInSet; }
/**
* Return a number of items in the group.
*/
uint32_t SetSize() const { return mSetSize; }
/**
* Return a direct or logical parent of the accessible that this group info is
* created for.
*/
Accessible* ConceptualParent() const { return mParent; }
/**
* Update group information.
*/
void Update();
/**
* Create group info.
*/
static AccGroupInfo* CreateGroupInfo(Accessible* aAccessible)
{
mozilla::a11y::role role = aAccessible->Role();
if (role != mozilla::a11y::roles::ROW &&
role != mozilla::a11y::roles::OUTLINEITEM &&
role != mozilla::a11y::roles::OPTION &&
role != mozilla::a11y::roles::LISTITEM &&
role != mozilla::a11y::roles::MENUITEM &&
role != mozilla::a11y::roles::COMBOBOX_OPTION &&
role != mozilla::a11y::roles::RICH_OPTION &&
role != mozilla::a11y::roles::CHECK_RICH_OPTION &&
role != mozilla::a11y::roles::PARENT_MENUITEM &&
role != mozilla::a11y::roles::CHECK_MENU_ITEM &&
role != mozilla::a11y::roles::RADIO_MENU_ITEM &&
role != mozilla::a11y::roles::RADIOBUTTON &&
role != mozilla::a11y::roles::PAGETAB)
return nullptr;
AccGroupInfo* info = new AccGroupInfo(aAccessible, BaseRole(role));
return info;
}
/**
* Return a first item for the given container.
*/
static Accessible* FirstItemOf(Accessible* aContainer);
/**
* Return next item of the same group to the given item.
*/
static Accessible* NextItemTo(Accessible* aItem);
protected:
AccGroupInfo(Accessible* aItem, a11y::role aRole);
private:
AccGroupInfo() = delete;
AccGroupInfo(const AccGroupInfo&) = delete;
AccGroupInfo& operator =(const AccGroupInfo&) = delete;
static mozilla::a11y::role BaseRole(mozilla::a11y::role aRole)
{
if (aRole == mozilla::a11y::roles::CHECK_MENU_ITEM ||
aRole == mozilla::a11y::roles::PARENT_MENUITEM ||
aRole == mozilla::a11y::roles::RADIO_MENU_ITEM)
return mozilla::a11y::roles::MENUITEM;
if (aRole == mozilla::a11y::roles::CHECK_RICH_OPTION)
return mozilla::a11y::roles::RICH_OPTION;
return aRole;
}
/**
* Return true if the given parent and child roles should have their node
* relations reported.
*/
static bool ShouldReportRelations(a11y::role aRole, a11y::role aParentRole);
uint32_t mPosInSet;
uint32_t mSetSize;
Accessible* mParent;
Accessible* mItem;
a11y::role mRole;
};
} // namespace mozilla
} // namespace a11y
#endif
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