1 : /* ***** BEGIN LICENSE BLOCK *****
2 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
3 : *
4 : * The contents of this file are subject to the Mozilla Public License Version
5 : * 1.1 (the "License"); you may not use this file except in compliance with
6 : * the License. You may obtain a copy of the License at
7 : * http://www.mozilla.org/MPL/
8 : *
9 : * Software distributed under the License is distributed on an "AS IS" basis,
10 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11 : * for the specific language governing rights and limitations under the
12 : * License.
13 : *
14 : * The Original Code is mozilla.org code.
15 : *
16 : * The Initial Developer of the Original Code is
17 : * Mozilla Foundation.
18 : * Portions created by the Initial Developer are Copyright (C) 2010
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : * Alexander Surkov <surkov.alexander@gmail.com> (original author)
23 : *
24 : * Alternatively, the contents of this file may be used under the terms of
25 : * either the GNU General Public License Version 2 or later (the "GPL"), or
26 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 : * in which case the provisions of the GPL or the LGPL are applicable instead
28 : * of those above. If you wish to allow use of your version of this file only
29 : * under the terms of either the GPL or the LGPL, and not to allow others to
30 : * use your version of this file under the terms of the MPL, indicate your
31 : * decision by deleting the provisions above and replace them with the notice
32 : * and other provisions required by the GPL or the LGPL. If you do not delete
33 : * the provisions above, a recipient may use your version of this file under
34 : * the terms of any one of the MPL, the GPL or the LGPL.
35 : *
36 : * ***** END LICENSE BLOCK ***** */
37 :
38 : #ifndef AccGroupInfo_h_
39 : #define AccGroupInfo_h_
40 :
41 : #include "nsAccessible.h"
42 : #include "nsAccUtils.h"
43 :
44 : /**
45 : * Calculate and store group information.
46 : */
47 : class AccGroupInfo
48 : {
49 : public:
50 : AccGroupInfo(nsAccessible* aItem, mozilla::a11y::role aRole);
51 0 : ~AccGroupInfo() { MOZ_COUNT_DTOR(AccGroupInfo); }
52 :
53 0 : PRInt32 PosInSet() const { return mPosInSet; }
54 0 : PRUint32 SetSize() const { return mSetSize; }
55 0 : nsAccessible* ConceptualParent() const { return mParent; }
56 :
57 : /**
58 : * Create group info.
59 : */
60 0 : static AccGroupInfo* CreateGroupInfo(nsAccessible* aAccessible)
61 : {
62 0 : mozilla::a11y::role role = aAccessible->Role();
63 0 : if (role != mozilla::a11y::roles::ROW &&
64 : role != mozilla::a11y::roles::GRID_CELL &&
65 : role != mozilla::a11y::roles::OUTLINEITEM &&
66 : role != mozilla::a11y::roles::OPTION &&
67 : role != mozilla::a11y::roles::LISTITEM &&
68 : role != mozilla::a11y::roles::MENUITEM &&
69 : role != mozilla::a11y::roles::COMBOBOX_OPTION &&
70 : role != mozilla::a11y::roles::PARENT_MENUITEM &&
71 : role != mozilla::a11y::roles::CHECK_MENU_ITEM &&
72 : role != mozilla::a11y::roles::RADIO_MENU_ITEM &&
73 : role != mozilla::a11y::roles::RADIOBUTTON &&
74 : role != mozilla::a11y::roles::PAGETAB)
75 0 : return nsnull;
76 :
77 0 : AccGroupInfo* info = new AccGroupInfo(aAccessible, BaseRole(role));
78 0 : return info;
79 : }
80 :
81 : private:
82 : AccGroupInfo(const AccGroupInfo&);
83 : AccGroupInfo& operator =(const AccGroupInfo&);
84 :
85 0 : static mozilla::a11y::role BaseRole(mozilla::a11y::role aRole)
86 : {
87 0 : if (aRole == mozilla::a11y::roles::CHECK_MENU_ITEM ||
88 : aRole == mozilla::a11y::roles::PARENT_MENUITEM ||
89 : aRole == mozilla::a11y::roles::RADIO_MENU_ITEM)
90 0 : return mozilla::a11y::roles::MENUITEM;
91 0 : return aRole;
92 : }
93 :
94 : /**
95 : * Return true if the given parent role is conceptual parent of the given
96 : * role.
97 : */
98 : static bool IsConceptualParent(mozilla::a11y::role aRole,
99 : mozilla::a11y::role aParentRole);
100 :
101 : PRUint32 mPosInSet;
102 : PRUint32 mSetSize;
103 : nsAccessible* mParent;
104 : };
105 :
106 : #endif
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