1 #ifndef DALI_INTERNAL_ACCESSIBILITY_BRIDGE_ACCESSIBLE_H
2 #define DALI_INTERNAL_ACCESSIBILITY_BRIDGE_ACCESSIBLE_H
5 * Copyright (c) 2021 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
24 #include <unordered_map>
28 #include "bridge-base.h"
31 * @brief The BridgeAccessible class is to correspond with Dali::Accessibility::Accessible.
33 class BridgeAccessible : public virtual BridgeBase
43 * @brief Registers Accessible functions to dbus interfaces.
45 void RegisterInterfaces();
49 * @brief Enumeration for NeighborSearchMode.
51 enum class NeighborSearchMode
53 NORMAL = 0, ///< Normal
54 RECURSE_FROM_ROOT = 1, ///< Recurse from root
55 CONTINUE_AFTER_FAILED_RECURSION = 2, ///< Continue after failed recursion
56 RECURSE_TO_OUTSIDE = 3, ///< Recurse to outside
59 using ReadingMaterialType = DBus::ValueOrError<
60 std::unordered_map<std::string, std::string>, // attributes
62 std::string, // labeledByName
63 std::string, // textIfceName
65 Dali::Accessibility::States,
66 std::string, // localized name
67 int32_t, // child count
68 double, // current value
69 double, // minimum increment
70 double, // maximum value
71 double, // minimum value
72 std::string, // description
73 int32_t, // index in parent
74 bool, // isSelectedInParent
75 bool, // hasCheckBoxChild
76 int32_t, // listChildrenCount
77 int32_t, // firstSelectedChildIndex
78 Dali::Accessibility::Accessible*, // parent
79 Dali::Accessibility::States, // parentStateSet
80 int32_t, // parentChildCount
81 uint32_t, // parentRole
82 int32_t, // selectedChildCount,
83 Dali::Accessibility::Accessible* // describedByObject
86 using Relation = std::tuple<uint32_t, std::vector<Dali::Accessibility::Address>>;
89 * @copydoc Dali::Accessibility::Accessible::GetChildCount()
94 * @copydoc Dali::Accessibility::Accessible::GetChildAtIndex()
96 DBus::ValueOrError<Dali::Accessibility::Accessible*> GetChildAtIndex(int index);
99 * @copydoc Dali::Accessibility::Accessible::GetParent()
101 Dali::Accessibility::Accessible* GetParent();
104 * @copydoc Dali::Accessibility::Accessible::GetChildren()
106 DBus::ValueOrError<std::vector<Dali::Accessibility::Accessible*>> GetChildren();
109 * @copydoc Dali::Accessibility::Accessible::GetName()
111 std::string GetName();
114 * @copydoc Dali::Accessibility::Accessible::GetDescription()
116 std::string GetDescription();
119 * @copydoc Dali::Accessibility::Accessible::GetRole()
121 DBus::ValueOrError<uint32_t> GetRole();
124 * @copydoc Dali::Accessibility::Accessible::GetRoleName()
126 DBus::ValueOrError<std::string> GetRoleName();
129 * @copydoc Dali::Accessibility::Accessible::GetLocalizedRoleName()
131 DBus::ValueOrError<std::string> GetLocalizedRoleName();
134 * @copydoc Dali::Accessibility::Accessible::GetIndexInParent()
136 DBus::ValueOrError<int32_t> GetIndexInParent();
139 * @copydoc Dali::Accessibility::Accessible::GetStates()
141 DBus::ValueOrError<std::array<uint32_t, 2>> GetStates();
144 * @copydoc Dali::Accessibility::Accessible::GetAttributes()
146 DBus::ValueOrError<std::unordered_map<std::string, std::string>> GetAttributes();
149 * @copydoc Dali::Accessibility::Accessible::GetInterfaces()
151 DBus::ValueOrError<std::vector<std::string>> GetInterfaces();
154 * @brief Gets Accessible object on which surface lies the point with given coordinates.
156 * @param[in] x X coordinate of a point
157 * @param[in] y Y coordinate of a point
158 * @param[in] coordinateType The coordinate type
159 * @return The array containing the Accessible object, recursive status, and deputy Accessible
161 DBus::ValueOrError<Dali::Accessibility::Accessible*, uint8_t, Dali::Accessibility::Accessible*> GetNavigableAtPoint(int32_t x, int32_t y, uint32_t coordinateType);
164 * @brief Gets Accessible object that, dependently to the given direction parameter,
165 * stands in navigation order immediately before/after the Accessible object being a target of this dbus call.
167 * The 'direction' parameter denotes if the neighbor object search is done forward or backward in UI elements navigation order.
168 * @param[in] rootPath The path of root Accessible object
169 * @param[in] direction 1 is forward, 0 is backward
170 * @param[in] searchMode BridgeAccessible::NeighborSearchMode enum
171 * @return The array containing the neighbor Accessible object and recursive status
173 DBus::ValueOrError<Dali::Accessibility::Accessible*, uint8_t> GetNeighbor(std::string rootPath, int32_t direction, int32_t searchMode);
176 * @brief Gets the default label information.
178 * The "Default label" is a text that could be read by screen-reader immediately
179 * after the navigation context has changed (window activates, popup shows up, tab changes) and before first UI element is highlighted.
180 * @return The array containing the default label, its role, and its attributes
181 * @note This is a Tizen only feature not present in upstream ATSPI.
182 * Feature can be enabled/disabled for particular context root object by setting value of its accessibility attribute "default_label".
184 DBus::ValueOrError<Dali::Accessibility::Accessible*, uint32_t, std::unordered_map<std::string, std::string>> GetDefaultLabelInfo();
187 * @brief Gets Reading material information of the self object.
188 * @return Reading material information
190 ReadingMaterialType GetReadingMaterial();
193 * @copydoc Dali::Accessibility::Bridge::SuppressScreenReader()
195 void SuppressScreenReader(bool) override;
198 * @copydoc Dali::Accessibility::Accessible::DoGesture()
200 DBus::ValueOrError<bool> DoGesture(Dali::Accessibility::Gesture type, int32_t startPositionX, int32_t startPositionY, int32_t endPositionX, int32_t endPositionY, Dali::Accessibility::GestureState state, uint32_t eventTime);
203 * @copydoc Dali::Accessibility::Accessible::GetRelationSet()
205 DBus::ValueOrError<std::vector<Relation>> GetRelationSet();
209 * @brief Calculates Neighbor candidate object in root node.
211 * The DFS algorithm in the method is implemented in iterative way.
212 * @param root The accessible root object
213 * @param start The start node
214 * @param forward If forward is 1, then it navigates forward, otherwise backward.
215 * @param searchMode BridgeAccessible::NeighborSearchMode enum
216 * @return The neighbor Accessible object
218 Dali::Accessibility::Accessible* CalculateNeighbor(Dali::Accessibility::Accessible* root, Dali::Accessibility::Accessible* start, unsigned char forward, NeighborSearchMode searchMode);
221 * @brief Gets valid children accessible.
223 * @param[in] children Children accessible objects
224 * @param start The start node // NEED TO UPDATE! It seems not to be used anywhere in this function.
225 * @param root The root node // NEED To UPDATE!
226 * @return The valid children
228 std::vector<Dali::Accessibility::Accessible*> GetValidChildren(const std::vector<Dali::Accessibility::Accessible*>& children, Dali::Accessibility::Accessible* start, Dali::Accessibility::Accessible* root);
231 * @brief Gets the currently highlighted accessible.
233 * @return The highlighted accessible
234 * @remarks This is an experimental feature and might not be supported now.
236 Dali::Accessibility::Accessible* GetCurrentlyHighlighted();
239 * @brief Finds the non defunct sibling of the node.
241 * @param[out] areAllChildrenVisited True if all children are visited
242 * @param[in] node The accessible object to find its non defunct sibling
243 * @param[in] start The start node
244 * @param[in] root The root node
245 * @param[in] forward If forward is 1, then it navigates forward, otherwise backward.
246 * @return The non defunct sibling accessible
248 * @note This function performs a Depth-First Search (DFS) on all children within the node.
250 Dali::Accessibility::Accessible* FindNonDefunctSibling(bool& areAllChildrenVisited, Dali::Accessibility::Accessible* node, Dali::Accessibility::Accessible* start, Dali::Accessibility::Accessible* root, unsigned char forward);
253 * @brief Gets the next non defunct sibling.
255 * @param obj The accessible object to find its non defunct sibling
256 * @param start The start node
257 * @param root The root node
258 * @param forward If forward is 1, then it navigates forward, otherwise backward.
259 * @return The non defunct sibling accessible
261 Dali::Accessibility::Accessible* GetNextNonDefunctSibling(Dali::Accessibility::Accessible* obj, Dali::Accessibility::Accessible* start, Dali::Accessibility::Accessible* root, unsigned char forward);
264 * @brief Gets Component object in relation.
265 * @param obj The accessible object to find component in its address
266 * @param relationType Accessibility::RelationType enum
267 * @return The Component object
269 Dali::Accessibility::Component* GetObjectInRelation(Dali::Accessibility::Accessible* obj, Dali::Accessibility::RelationType relationType);
272 * @brief Calculates and gets Component object that can be navigable at given coordinates.
274 * This method calculates which Component should be addressed if user hits certain point in a screen.
275 * @param root The root node
276 * @param point The coordinate of a point
277 * @param type This type says if the coordinates of a point refer to the device screen or current window.
278 * @param maxRecursionDepth The maximum recursion depth count
279 * @return The Component object
281 Dali::Accessibility::Component* CalculateNavigableAccessibleAtPoint(Dali::Accessibility::Accessible* root, Dali::Accessibility::Point point, Dali::Accessibility::CoordinateType type, unsigned int maxRecursionDepth);
285 bool mIsScreenReaderSuppressed = false;
288 #endif // DALI_INTERNAL_ACCESSIBILITY_BRIDGE_ACCESSIBLE_H