nsMai.h (3379B)
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=2 et sw=2 tw=80: */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 #ifndef __NS_MAI_H__ 8 #define __NS_MAI_H__ 9 10 #include <atk/atk.h> 11 #include <glib.h> 12 #include <glib-object.h> 13 14 #include "AccessibleWrap.h" 15 16 namespace mozilla { 17 namespace a11y { 18 class RemoteAccessible; 19 class Accessible; 20 } // namespace a11y 21 } // namespace mozilla 22 23 #define MAI_TYPE_ATK_OBJECT (mai_atk_object_get_type()) 24 #define MAI_ATK_OBJECT(obj) \ 25 (G_TYPE_CHECK_INSTANCE_CAST((obj), MAI_TYPE_ATK_OBJECT, MaiAtkObject)) 26 #define MAI_ATK_OBJECT_CLASS(klass) \ 27 (G_TYPE_CHECK_CLASS_CAST((klass), MAI_TYPE_ATK_OBJECT, MaiAtkObjectClass)) 28 #define IS_MAI_OBJECT(obj) \ 29 (G_TYPE_CHECK_INSTANCE_TYPE((obj), MAI_TYPE_ATK_OBJECT)) 30 #define IS_MAI_OBJECT_CLASS(klass) \ 31 (G_TYPE_CHECK_CLASS_TYPE((klass), MAI_TYPE_ATK_OBJECT)) 32 #define MAI_ATK_OBJECT_GET_CLASS(obj) \ 33 (G_TYPE_INSTANCE_GET_CLASS((obj), MAI_TYPE_ATK_OBJECT, MaiAtkObjectClass)) 34 GType mai_atk_object_get_type(void); 35 GType mai_util_get_type(); 36 37 // This is a pointer to the atk_table_cell_get_type function if we are using 38 // a version of atk that defines that. 39 extern "C" GType (*gAtkTableCellGetTypeFunc)(); 40 41 mozilla::a11y::AccessibleWrap* GetAccessibleWrap(AtkObject* aAtkObj); 42 mozilla::a11y::RemoteAccessible* GetProxy(AtkObject* aAtkObj); 43 mozilla::a11y::Accessible* GetInternalObj(AtkObject* aObj); 44 AtkObject* GetWrapperFor(mozilla::a11y::Accessible* acc); 45 46 extern int atkMajorVersion, atkMinorVersion, atkMicroVersion; 47 48 /** 49 * Return true if the loaded version of libatk-1.0.so is at least 50 * aMajor.aMinor.aMicro. 51 */ 52 static inline bool IsAtkVersionAtLeast(int aMajor, int aMinor, int aMicro = 0) { 53 return aMajor < atkMajorVersion || 54 (aMajor == atkMajorVersion && 55 (aMinor < atkMinorVersion || 56 (aMinor == atkMinorVersion && aMicro <= atkMicroVersion))); 57 } 58 59 /** 60 * This MaiAtkObject is a thin wrapper, in the MAI namespace, for AtkObject 61 */ 62 struct MaiAtkObject { 63 AtkObject parent; 64 /* 65 * The AccessibleWrap whose properties and features are exported 66 * via this object instance. 67 */ 68 mozilla::a11y::Accessible* acc; 69 70 /* 71 * Get the AtkHyperlink for this atk object. 72 */ 73 AtkHyperlink* GetAtkHyperlink(); 74 75 /* 76 * Shutdown this AtkObject. 77 */ 78 void Shutdown(); 79 80 /* 81 * Notify atk of a state change on this AtkObject. 82 */ 83 void FireStateChangeEvent(uint64_t aState, bool aEnabled); 84 85 /* 86 * Notify ATK of a text change within this ATK object. 87 */ 88 void FireTextChangeEvent(const nsAString& aStr, int32_t aStart, uint32_t aLen, 89 bool aIsInsert, bool aIsFromUser); 90 91 /** 92 * Notify ATK of a shown or hidden subtree rooted at aObject whose parent is 93 * aParent 94 */ 95 void FireAtkShowHideEvent(AtkObject* aParent, bool aIsAdded, bool aFromUser); 96 97 private: 98 /* 99 * do we have text-remove and text-insert signals if not we need to use 100 * text-changed see AccessibleWrap::FireAtkTextChangedEvent() and 101 * bug 619002 102 */ 103 enum EAvailableAtkSignals { 104 eUnknown, 105 eHaveNewAtkTextSignals, 106 eNoNewAtkSignals 107 }; 108 109 static EAvailableAtkSignals gAvailableAtkSignals; 110 }; 111 112 #endif /* __NS_MAI_H__ */