dali/internal/accessibility/bridge/accessible.cpp

   1 /*
   2  * Copyright (c) 2021 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19
  20 //INTERNAL INCLUDES
  21 #include <dali/internal/accessibility/bridge/accessibility-common.h>
  22 #include <third-party/libunibreak/linebreak.h>
  23 #include <third-party/libunibreak/wordbreak.h>
  24
  25 using namespace Dali::Accessibility;
  26
  27 std::vector<std::string> Accessible::GetInterfaces()
  28 {
  29   std::vector<std::string> tmp;
  30   tmp.push_back(AtspiDbusInterfaceAccessible);
  31   if(dynamic_cast<Collection*>(this))
  32   {
  33     tmp.push_back(AtspiDbusInterfaceCollection);
  34   }
  35   if(dynamic_cast<Text*>(this))
  36   {
  37     tmp.push_back(AtspiDbusInterfaceText);
  38   }
  39   if(dynamic_cast<EditableText*>(this))
  40   {
  41     tmp.push_back(AtspiDbusInterfaceEditableText);
  42   }
  43   if(dynamic_cast<Value*>(this))
  44   {
  45     tmp.push_back(AtspiDbusInterfaceValue);
  46   }
  47   if(dynamic_cast<Component*>(this))
  48   {
  49     tmp.push_back(AtspiDbusInterfaceComponent);
  50   }
  51   if(auto action = dynamic_cast<Action*>(this))
  52   {
  53     if(action->GetActionCount() > 0)
  54     {
  55       tmp.push_back(AtspiDbusInterfaceAction);
  56     }
  57   }
  58   if(dynamic_cast<Selection*>(this))
  59   {
  60     tmp.push_back(AtspiDbusInterfaceSelection);
  61   }
  62   return tmp;
  63 }
  64
  65 Accessible::Accessible()
  66 {
  67 }
  68
  69 Accessible::~Accessible()
  70 {
  71   auto handle = mBridgeData.lock();
  72   if(handle)
  73   {
  74     handle->mKnownObjects.erase(this);
  75   }
  76 }
  77
  78 void Accessible::EmitActiveDescendantChanged(Accessible* obj, Accessible* child)
  79 {
  80   if(auto bridgeData = GetBridgeData())
  81   {
  82     bridgeData->mBridge->EmitActiveDescendantChanged(obj, child);
  83   }
  84 }
  85
  86 void Accessible::EmitStateChanged(State state, int newValue, int reserved)
  87 {
  88   if(auto bridgeData = GetBridgeData())
  89   {
  90     bridgeData->mBridge->EmitStateChanged(this, state, newValue, reserved);
  91   }
  92 }
  93
  94 void Accessible::EmitShowing(bool isShowing)
  95 {
  96   if(auto bridgeData = GetBridgeData())
  97   {
  98     bridgeData->mBridge->EmitStateChanged(this, State::SHOWING, isShowing ? 1 : 0, 0);
  99   }
 100 }
 101
 102 void Accessible::EmitVisible(bool isVisible)
 103 {
 104   if(auto bridgeData = GetBridgeData())
 105   {
 106     bridgeData->mBridge->EmitStateChanged(this, State::VISIBLE, isVisible ? 1 : 0, 0);
 107   }
 108 }
 109
 110 void Accessible::EmitHighlighted(bool isHighlighted)
 111 {
 112   if(auto bridgeData = GetBridgeData())
 113   {
 114     bridgeData->mBridge->EmitStateChanged(this, State::HIGHLIGHTED, isHighlighted ? 1 : 0, 0);
 115   }
 116 }
 117
 118 void Accessible::EmitFocused(bool isFocused)
 119 {
 120   if(auto bridgeData = GetBridgeData())
 121   {
 122     bridgeData->mBridge->EmitStateChanged(this, State::FOCUSED, isFocused ? 1 : 0, 0);
 123   }
 124 }
 125 void Accessible::EmitTextInserted(unsigned int position, unsigned int length, const std::string& content)
 126 {
 127   if(auto bridgeData = GetBridgeData())
 128   {
 129     bridgeData->mBridge->EmitTextChanged(this, TextChangedState::INSERTED, position, length, content);
 130   }
 131 }
 132 void Accessible::EmitTextDeleted(unsigned int position, unsigned int length, const std::string& content)
 133 {
 134   if(auto bridgeData = GetBridgeData())
 135   {
 136     bridgeData->mBridge->EmitTextChanged(this, TextChangedState::DELETED, position, length, content);
 137   }
 138 }
 139 void Accessible::EmitTextCursorMoved(unsigned int cursorPosition)
 140 {
 141   if(auto bridgeData = GetBridgeData())
 142   {
 143     bridgeData->mBridge->EmitCursorMoved(this, cursorPosition);
 144   }
 145 }
 146 void Accessible::Emit(WindowEvent event, unsigned int detail)
 147 {
 148   if(auto bridgeData = GetBridgeData())
 149   {
 150     bridgeData->mBridge->Emit(this, event, detail);
 151   }
 152 }
 153 void Accessible::Emit(ObjectPropertyChangeEvent event)
 154 {
 155   if(auto bridgeData = GetBridgeData())
 156   {
 157     bridgeData->mBridge->Emit(this, event);
 158   }
 159 }
 160
 161 void Accessible::EmitBoundsChanged(Rect<> rect)
 162 {
 163   if(auto bridgeData = GetBridgeData())
 164   {
 165     bridgeData->mBridge->EmitBoundsChanged(this, rect);
 166   }
 167 }
 168
 169 std::vector<Accessible*> Accessible::GetChildren()
 170 {
 171   std::vector<Accessible*> tmp(GetChildCount());
 172   for(auto i = 0u; i < tmp.size(); ++i)
 173   {
 174     tmp[i] = GetChildAtIndex(i);
 175   }
 176   return tmp;
 177 }
 178
 179 std::shared_ptr<Bridge::Data> Accessible::GetBridgeData()
 180 {
 181   auto handle = mBridgeData.lock();
 182   if(!handle)
 183   {
 184     auto bridge = Bridge::GetCurrentBridge();
 185     handle = bridge->mData;
 186   }
 187   return handle;
 188 }
 189
 190 Address Accessible::GetAddress()
 191 {
 192   auto handle = mBridgeData.lock();
 193   if(!handle)
 194   {
 195     handle = GetBridgeData();
 196     if(handle)
 197     {
 198       handle->mBridge->RegisterOnBridge(this);
 199     }
 200   }
 201   std::ostringstream tmp;
 202   tmp << this;
 203   return {handle ? handle->mBusName : "", tmp.str()};
 204 }
 205
 206 void Bridge::RegisterOnBridge(Accessible* object)
 207 {
 208   assert(!object->mBridgeData.lock() || object->mBridgeData.lock() == mData);
 209   if(!object->mBridgeData.lock())
 210   {
 211     assert(mData);
 212     mData->mKnownObjects.insert(object);
 213     object->mBridgeData = mData;
 214   }
 215 }
 216
 217 bool Accessible::IsProxy()
 218 {
 219   return false;
 220 }
 221
 222 Accessible* Accessible::GetDefaultLabel()
 223 {
 224   return this;
 225 }
 226
 227 void Accessible::NotifyAccessibilityStateChange(Dali::Accessibility::States states, bool isRecursive)
 228 {
 229   if(auto data = GetBridgeData())
 230   {
 231     auto currentState = GetStates() & states;
 232     for(auto i = 0u; i < currentState.size(); i++)
 233     {
 234       auto index = static_cast<Dali::Accessibility::State>(i);
 235       if(currentState[index])
 236       {
 237         data->mBridge->EmitStateChanged(this, index, 1, 0);
 238       }
 239     }
 240
 241     if(isRecursive)
 242     {
 243       auto children = GetChildren();
 244       for(auto iter : children)
 245       {
 246         iter->NotifyAccessibilityStateChange(states, isRecursive);
 247       }
 248     }
 249   }
 250 }
 251
 252 void Accessible::FindWordSeparationsUtf8(const utf8_t* string, size_t length, const char* language, char* breaks)
 253 {
 254   set_wordbreaks_utf8(string, length, language, breaks);
 255 }
 256
 257 void Accessible::FindLineSeparationsUtf8(const utf8_t* string, size_t length, const char* language, char* breaks)
 258 {
 259   set_linebreaks_utf8(string, length, language, breaks);
 260 }