1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/accessible/src/base/AccGroupInfo.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,114 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef AccGroupInfo_h_
1.9 +#define AccGroupInfo_h_
1.10 +
1.11 +#include "Accessible-inl.h"
1.12 +
1.13 +namespace mozilla {
1.14 +namespace a11y {
1.15 +
1.16 +/**
1.17 + * Calculate and store group information.
1.18 + */
1.19 +class AccGroupInfo
1.20 +{
1.21 +public:
1.22 + ~AccGroupInfo() { MOZ_COUNT_DTOR(AccGroupInfo); }
1.23 +
1.24 + /**
1.25 + * Return 1-based position in the group.
1.26 + */
1.27 + uint32_t PosInSet() const { return mPosInSet; }
1.28 +
1.29 + /**
1.30 + * Return a number of items in the group.
1.31 + */
1.32 + uint32_t SetSize() const { return mSetSize; }
1.33 +
1.34 + /**
1.35 + * Return a direct or logical parent of the accessible that this group info is
1.36 + * created for.
1.37 + */
1.38 + Accessible* ConceptualParent() const { return mParent; }
1.39 +
1.40 + /**
1.41 + * Update group information.
1.42 + */
1.43 + void Update();
1.44 +
1.45 + /**
1.46 + * Create group info.
1.47 + */
1.48 + static AccGroupInfo* CreateGroupInfo(Accessible* aAccessible)
1.49 + {
1.50 + mozilla::a11y::role role = aAccessible->Role();
1.51 + if (role != mozilla::a11y::roles::ROW &&
1.52 + role != mozilla::a11y::roles::OUTLINEITEM &&
1.53 + role != mozilla::a11y::roles::OPTION &&
1.54 + role != mozilla::a11y::roles::LISTITEM &&
1.55 + role != mozilla::a11y::roles::MENUITEM &&
1.56 + role != mozilla::a11y::roles::COMBOBOX_OPTION &&
1.57 + role != mozilla::a11y::roles::RICH_OPTION &&
1.58 + role != mozilla::a11y::roles::CHECK_RICH_OPTION &&
1.59 + role != mozilla::a11y::roles::PARENT_MENUITEM &&
1.60 + role != mozilla::a11y::roles::CHECK_MENU_ITEM &&
1.61 + role != mozilla::a11y::roles::RADIO_MENU_ITEM &&
1.62 + role != mozilla::a11y::roles::RADIOBUTTON &&
1.63 + role != mozilla::a11y::roles::PAGETAB)
1.64 + return nullptr;
1.65 +
1.66 + AccGroupInfo* info = new AccGroupInfo(aAccessible, BaseRole(role));
1.67 + return info;
1.68 + }
1.69 +
1.70 + /**
1.71 + * Return a first item for the given container.
1.72 + */
1.73 + static Accessible* FirstItemOf(Accessible* aContainer);
1.74 +
1.75 + /**
1.76 + * Return next item of the same group to the given item.
1.77 + */
1.78 + static Accessible* NextItemTo(Accessible* aItem);
1.79 +
1.80 +protected:
1.81 + AccGroupInfo(Accessible* aItem, a11y::role aRole);
1.82 +
1.83 +private:
1.84 + AccGroupInfo() MOZ_DELETE;
1.85 + AccGroupInfo(const AccGroupInfo&) MOZ_DELETE;
1.86 + AccGroupInfo& operator =(const AccGroupInfo&) MOZ_DELETE;
1.87 +
1.88 + static mozilla::a11y::role BaseRole(mozilla::a11y::role aRole)
1.89 + {
1.90 + if (aRole == mozilla::a11y::roles::CHECK_MENU_ITEM ||
1.91 + aRole == mozilla::a11y::roles::PARENT_MENUITEM ||
1.92 + aRole == mozilla::a11y::roles::RADIO_MENU_ITEM)
1.93 + return mozilla::a11y::roles::MENUITEM;
1.94 +
1.95 + if (aRole == mozilla::a11y::roles::CHECK_RICH_OPTION)
1.96 + return mozilla::a11y::roles::RICH_OPTION;
1.97 +
1.98 + return aRole;
1.99 + }
1.100 +
1.101 + /**
1.102 + * Return true if the given parent and child roles should have their node
1.103 + * relations reported.
1.104 + */
1.105 + static bool ShouldReportRelations(a11y::role aRole, a11y::role aParentRole);
1.106 +
1.107 + uint32_t mPosInSet;
1.108 + uint32_t mSetSize;
1.109 + Accessible* mParent;
1.110 + Accessible* mItem;
1.111 + a11y::role mRole;
1.112 +};
1.113 +
1.114 +} // namespace mozilla
1.115 +} // namespace a11y
1.116 +
1.117 +#endif
