The Tor Browser: accessible/src/base/AccGroupInfo.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #ifndef AccGroupInfo_h_

     6 #define AccGroupInfo_h_

     8 #include "Accessible-inl.h"

    10 namespace mozilla {

    11 namespace a11y {

    13 /**

    14  * Calculate and store group information.

    15  */

    16 class AccGroupInfo

    17 {

    18 public:

    19   ~AccGroupInfo() { MOZ_COUNT_DTOR(AccGroupInfo); }

    21   /**

    22    * Return 1-based position in the group.

    23    */

    24   uint32_t PosInSet() const { return mPosInSet; }

    26   /**

    27    * Return a number of items in the group.

    28    */

    29   uint32_t SetSize() const { return mSetSize; }

    31   /**

    32    * Return a direct or logical parent of the accessible that this group info is

    33    * created for.

    34    */

    35   Accessible* ConceptualParent() const { return mParent; }

    37   /**

    38    * Update group information.

    39    */

    40   void Update();

    42   /**

    43    * Create group info.

    44    */

    45   static AccGroupInfo* CreateGroupInfo(Accessible* aAccessible)

    46   {

    47     mozilla::a11y::role role = aAccessible->Role();

    48     if (role != mozilla::a11y::roles::ROW &&

    49         role != mozilla::a11y::roles::OUTLINEITEM &&

    50         role != mozilla::a11y::roles::OPTION &&

    51         role != mozilla::a11y::roles::LISTITEM &&

    52         role != mozilla::a11y::roles::MENUITEM &&

    53         role != mozilla::a11y::roles::COMBOBOX_OPTION &&

    54         role != mozilla::a11y::roles::RICH_OPTION &&

    55         role != mozilla::a11y::roles::CHECK_RICH_OPTION &&

    56         role != mozilla::a11y::roles::PARENT_MENUITEM &&

    57         role != mozilla::a11y::roles::CHECK_MENU_ITEM &&

    58         role != mozilla::a11y::roles::RADIO_MENU_ITEM &&

    59         role != mozilla::a11y::roles::RADIOBUTTON &&

    60         role != mozilla::a11y::roles::PAGETAB)

    61       return nullptr;

    63     AccGroupInfo* info = new AccGroupInfo(aAccessible, BaseRole(role));

    64     return info;

    65   }

    67   /**

    68    * Return a first item for the given container.

    69    */

    70   static Accessible* FirstItemOf(Accessible* aContainer);

    72   /**

    73    * Return next item of the same group to the given item.

    74    */

    75   static Accessible* NextItemTo(Accessible* aItem);

    77 protected:

    78   AccGroupInfo(Accessible* aItem, a11y::role aRole);

    80 private:

    81   AccGroupInfo() MOZ_DELETE;

    82   AccGroupInfo(const AccGroupInfo&) MOZ_DELETE;

    83   AccGroupInfo& operator =(const AccGroupInfo&) MOZ_DELETE;

    85   static mozilla::a11y::role BaseRole(mozilla::a11y::role aRole)

    86   {

    87     if (aRole == mozilla::a11y::roles::CHECK_MENU_ITEM ||

    88         aRole == mozilla::a11y::roles::PARENT_MENUITEM ||

    89         aRole == mozilla::a11y::roles::RADIO_MENU_ITEM)

    90       return mozilla::a11y::roles::MENUITEM;

    92     if (aRole == mozilla::a11y::roles::CHECK_RICH_OPTION)

    93       return mozilla::a11y::roles::RICH_OPTION;

    95     return aRole;

    96   }

    98   /**

    99    * Return true if the given parent and child roles should have their node

   100    * relations reported.

   101    */

   102   static bool ShouldReportRelations(a11y::role aRole, a11y::role aParentRole);

   104   uint32_t mPosInSet;

   105   uint32_t mSetSize;

   106   Accessible* mParent;

   107   Accessible* mItem;

   108   a11y::role mRole;

   109 };

   111 } // namespace mozilla

   112 } // namespace a11y

   114 #endif

The Tor Browser / file revision