src/Tizen.NUI/src/public/BaseComponents/ViewEvent.cs

   1 /*
   2  * Copyright(c) 2020 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 using System;
  19 using System.ComponentModel;
  20 using System.Runtime.InteropServices;
  21 using Tizen.NUI.Components;
  22
  23 namespace Tizen.NUI.BaseComponents
  24 {
  25     /// <summary>
  26     /// View is the base class for all views.
  27     /// </summary>
  28     /// <since_tizen> 3 </since_tizen>
  29     public partial class View
  30     {
  31         private EventHandler _offWindowEventHandler;
  32         private OffWindowEventCallbackType _offWindowEventCallback;
  33         private EventHandlerWithReturnType<object, WheelEventArgs, bool> _wheelEventHandler;
  34         private WheelEventCallbackType _wheelEventCallback;
  35         private EventHandlerWithReturnType<object, KeyEventArgs, bool> _keyEventHandler;
  36         private KeyCallbackType _keyCallback;
  37         private EventHandlerWithReturnType<object, TouchEventArgs, bool> _interceptTouchDataEventHandler;
  38         private TouchDataCallbackType _interceptTouchDataCallback;
  39         private EventHandlerWithReturnType<object, TouchEventArgs, bool> _touchDataEventHandler;
  40         private TouchDataCallbackType _touchDataCallback;
  41         private EventHandlerWithReturnType<object, HoverEventArgs, bool> _hoverEventHandler;
  42         private HoverEventCallbackType _hoverEventCallback;
  43         private EventHandler<VisibilityChangedEventArgs> _visibilityChangedEventHandler;
  44         private VisibilityChangedEventCallbackType _visibilityChangedEventCallback;
  45         private EventHandler _keyInputFocusGainedEventHandler;
  46         private KeyInputFocusGainedCallbackType _keyInputFocusGainedCallback;
  47         private EventHandler _keyInputFocusLostEventHandler;
  48         private KeyInputFocusLostCallbackType _keyInputFocusLostCallback;
  49         private EventHandler _onRelayoutEventHandler;
  50         private OnRelayoutEventCallbackType _onRelayoutEventCallback;
  51         private EventHandler _onWindowEventHandler;
  52         private OnWindowEventCallbackType _onWindowEventCallback;
  53         private EventHandler<LayoutDirectionChangedEventArgs> _layoutDirectionChangedEventHandler;
  54         private LayoutDirectionChangedEventCallbackType _layoutDirectionChangedEventCallback;
  55         // Resource Ready Signal
  56         private EventHandler _resourcesLoadedEventHandler;
  57         private ResourcesLoadedCallbackType _ResourcesLoadedCallback;
  58         private EventHandler<BackgroundResourceLoadedEventArgs> _backgroundResourceLoadedEventHandler;
  59         private _backgroundResourceLoadedCallbackType _backgroundResourceLoadedCallback;
  60
  61         private OnWindowEventCallbackType _onWindowSendEventCallback;
  62
  63         private void SendViewAddedEventToWindow(IntPtr data)
  64         {
  65             NUIApplication.GetDefaultWindow()?.SendViewAdded(this);
  66         }
  67
  68         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  69         private delegate void OffWindowEventCallbackType(IntPtr control);
  70         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  71         private delegate bool WheelEventCallbackType(IntPtr view, IntPtr wheelEvent);
  72         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  73         private delegate bool KeyCallbackType(IntPtr control, IntPtr keyEvent);
  74         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  75         private delegate bool TouchDataCallbackType(IntPtr view, IntPtr touchData);
  76         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  77         private delegate bool HoverEventCallbackType(IntPtr view, IntPtr hoverEvent);
  78         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  79         private delegate void VisibilityChangedEventCallbackType(IntPtr data, bool visibility, VisibilityChangeType type);
  80         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  81         private delegate void ResourcesLoadedCallbackType(IntPtr control);
  82         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  83         private delegate void _backgroundResourceLoadedCallbackType(IntPtr view);
  84         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  85         private delegate void KeyInputFocusGainedCallbackType(IntPtr control);
  86         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  87         private delegate void KeyInputFocusLostCallbackType(IntPtr control);
  88         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  89         private delegate void OnRelayoutEventCallbackType(IntPtr control);
  90         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  91         private delegate void OnWindowEventCallbackType(IntPtr control);
  92         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  93         private delegate void LayoutDirectionChangedEventCallbackType(IntPtr data, ViewLayoutDirectionType type);
  94
  95         /// <summary>
  96         /// Event when a child is removed.
  97         /// </summary>
  98         /// <since_tizen> 5 </since_tizen>
  99         public new event EventHandler<ChildRemovedEventArgs> ChildRemoved;
 100         /// <summary>
 101         /// Event when a child is added.
 102         /// </summary>
 103         /// <since_tizen> 5 </since_tizen>
 104         public new event EventHandler<ChildAddedEventArgs> ChildAdded;
 105
 106         /// <summary>
 107         /// An event for the KeyInputFocusGained signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 108         /// The KeyInputFocusGained signal is emitted when the control gets the key input focus.<br />
 109         /// </summary>
 110         /// <since_tizen> 3 </since_tizen>
 111         public event EventHandler FocusGained
 112         {
 113             add
 114             {
 115                 if (_keyInputFocusGainedEventHandler == null)
 116                 {
 117                     _keyInputFocusGainedCallback = OnKeyInputFocusGained;
 118                     this.KeyInputFocusGainedSignal().Connect(_keyInputFocusGainedCallback);
 119                 }
 120
 121                 _keyInputFocusGainedEventHandler += value;
 122             }
 123
 124             remove
 125             {
 126                 _keyInputFocusGainedEventHandler -= value;
 127
 128                 if (_keyInputFocusGainedEventHandler == null && KeyInputFocusGainedSignal().Empty() == false)
 129                 {
 130                     this.KeyInputFocusGainedSignal().Disconnect(_keyInputFocusGainedCallback);
 131                 }
 132             }
 133         }
 134
 135         /// <summary>
 136         /// An event for the KeyInputFocusLost signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 137         /// The KeyInputFocusLost signal is emitted when the control loses the key input focus.<br />
 138         /// </summary>
 139         /// <since_tizen> 3 </since_tizen>
 140         public event EventHandler FocusLost
 141         {
 142             add
 143             {
 144                 if (_keyInputFocusLostEventHandler == null)
 145                 {
 146                     _keyInputFocusLostCallback = OnKeyInputFocusLost;
 147                     this.KeyInputFocusLostSignal().Connect(_keyInputFocusLostCallback);
 148                 }
 149
 150                 _keyInputFocusLostEventHandler += value;
 151             }
 152
 153             remove
 154             {
 155                 _keyInputFocusLostEventHandler -= value;
 156
 157                 if (_keyInputFocusLostEventHandler == null && KeyInputFocusLostSignal().Empty() == false)
 158                 {
 159                     this.KeyInputFocusLostSignal().Disconnect(_keyInputFocusLostCallback);
 160                 }
 161             }
 162         }
 163
 164         /// <summary>
 165         /// An event for the KeyPressed signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 166         /// The KeyPressed signal is emitted when the key event is received.<br />
 167         /// </summary>
 168         /// <since_tizen> 3 </since_tizen>
 169         public event EventHandlerWithReturnType<object, KeyEventArgs, bool> KeyEvent
 170         {
 171             add
 172             {
 173                 if (_keyEventHandler == null)
 174                 {
 175                     _keyCallback = OnKeyEvent;
 176                     this.KeyEventSignal().Connect(_keyCallback);
 177                 }
 178
 179                 _keyEventHandler += value;
 180             }
 181
 182             remove
 183             {
 184                 _keyEventHandler -= value;
 185
 186                 if (_keyEventHandler == null && KeyEventSignal().Empty() == false)
 187                 {
 188                     this.KeyEventSignal().Disconnect(_keyCallback);
 189                 }
 190             }
 191         }
 192
 193         /// <summary>
 194         /// An event for the OnRelayout signal which can be used to subscribe or unsubscribe the event handler.<br />
 195         /// The OnRelayout signal is emitted after the size has been set on the view during relayout.<br />
 196         /// </summary>
 197         /// <since_tizen> 3 </since_tizen>
 198         public event EventHandler Relayout
 199         {
 200             add
 201             {
 202                 if (_onRelayoutEventHandler == null)
 203                 {
 204                     _onRelayoutEventCallback = OnRelayout;
 205                     this.OnRelayoutSignal().Connect(_onRelayoutEventCallback);
 206                 }
 207
 208                 _onRelayoutEventHandler += value;
 209             }
 210
 211             remove
 212             {
 213                 _onRelayoutEventHandler -= value;
 214
 215                 if (_onRelayoutEventHandler == null && OnRelayoutSignal().Empty() == false)
 216                 {
 217                     this.OnRelayoutSignal().Disconnect(_onRelayoutEventCallback);
 218                 }
 219
 220             }
 221         }
 222
 223         /// <summary>
 224         /// An event for the touched signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 225         /// The touched signal is emitted when the touch input is received.<br />
 226         /// This can receive touch events before child. <br />
 227         /// If it returns false, the child can receive the touch event. If it returns true, the touch event is intercepted. So child cannot receive touch event.<br />
 228         /// </summary>
 229         [EditorBrowsable(EditorBrowsableState.Never)]
 230         public event EventHandlerWithReturnType<object, TouchEventArgs, bool> InterceptTouchEvent
 231         {
 232             add
 233             {
 234                 if (_interceptTouchDataEventHandler == null)
 235                 {
 236                     _interceptTouchDataCallback = OnInterceptTouch;
 237                     this.InterceptTouchSignal().Connect(_interceptTouchDataCallback);
 238                 }
 239
 240                 _interceptTouchDataEventHandler += value;
 241             }
 242
 243             remove
 244             {
 245                 _interceptTouchDataEventHandler -= value;
 246
 247                 if (_interceptTouchDataEventHandler == null && InterceptTouchSignal().Empty() == false)
 248                 {
 249                     this.InterceptTouchSignal().Disconnect(_interceptTouchDataCallback);
 250                 }
 251             }
 252         }
 253
 254         /// <summary>
 255         /// If child view doesn't want the parent's view to intercept the touch, you can set it to true.
 256         /// for example :
 257         ///    parent.Add(child);
 258         ///    parent.InterceptTouchEvent += OnInterceptTouchEvent;
 259         ///    View view = child.GetParent() as View;
 260         ///    view.DisallowInterceptTouchEvent = true;
 261         ///  This prevents the parent from interceping touch.
 262         /// </summary>
 263         [EditorBrowsable(EditorBrowsableState.Never)]
 264         public bool DisallowInterceptTouchEvent {get; set;}
 265
 266
 267         /// <summary>
 268         /// An event for the touched signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 269         /// The touched signal is emitted when the touch input is received.<br />
 270         /// </summary>
 271         /// <since_tizen> 3 </since_tizen>
 272         public event EventHandlerWithReturnType<object, TouchEventArgs, bool> TouchEvent
 273         {
 274             add
 275             {
 276                 if (_touchDataEventHandler == null)
 277                 {
 278                     _touchDataCallback = OnTouch;
 279                     this.TouchSignal().Connect(_touchDataCallback);
 280                 }
 281
 282                 _touchDataEventHandler += value;
 283             }
 284
 285             remove
 286             {
 287                 _touchDataEventHandler -= value;
 288
 289                 if (_touchDataEventHandler == null && TouchSignal().Empty() == false)
 290                 {
 291                     this.TouchSignal().Disconnect(_touchDataCallback);
 292                 }
 293             }
 294         }
 295
 296         /// <summary>
 297         /// An event for the hovered signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 298         /// The hovered signal is emitted when the hover input is received.<br />
 299         /// </summary>
 300         /// <since_tizen> 3 </since_tizen>
 301         public event EventHandlerWithReturnType<object, HoverEventArgs, bool> HoverEvent
 302         {
 303             add
 304             {
 305                 if (_hoverEventHandler == null)
 306                 {
 307                     _hoverEventCallback = OnHoverEvent;
 308                     this.HoveredSignal().Connect(_hoverEventCallback);
 309                 }
 310
 311                 _hoverEventHandler += value;
 312             }
 313
 314             remove
 315             {
 316                 _hoverEventHandler -= value;
 317
 318                 if (_hoverEventHandler == null && HoveredSignal().Empty() == false)
 319                 {
 320                     this.HoveredSignal().Disconnect(_hoverEventCallback);
 321                 }
 322
 323             }
 324         }
 325
 326         /// <summary>
 327         /// An event for the WheelMoved signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 328         /// The WheelMoved signal is emitted when the wheel event is received.<br />
 329         /// </summary>
 330         /// <since_tizen> 3 </since_tizen>
 331         public event EventHandlerWithReturnType<object, WheelEventArgs, bool> WheelEvent
 332         {
 333             add
 334             {
 335                 if (_wheelEventHandler == null)
 336                 {
 337                     _wheelEventCallback = OnWheelEvent;
 338                     this.WheelEventSignal().Connect(_wheelEventCallback);
 339                 }
 340                 _wheelEventHandler += value;
 341
 342                 if (WindowWheelEventHandler == null)
 343                 {
 344                     NUIApplication.GetDefaultWindow().WheelEvent += OnWindowWheelEvent;
 345                 }
 346                 WindowWheelEventHandler += value;
 347             }
 348
 349             remove
 350             {
 351                 _wheelEventHandler -= value;
 352                 if (_wheelEventHandler == null && WheelEventSignal().Empty() == false)
 353                 {
 354                     this.WheelEventSignal().Disconnect(_wheelEventCallback);
 355                 }
 356
 357                 WindowWheelEventHandler -= value;
 358                 if (WindowWheelEventHandler == null)
 359                 {
 360                     NUIApplication.GetDefaultWindow().WheelEvent -= OnWindowWheelEvent;
 361                 }
 362             }
 363         }
 364
 365         /// <summary>
 366         /// An event for the OnWindow signal which can be used to subscribe or unsubscribe the event handler.<br />
 367         /// The OnWindow signal is emitted after the view has been connected to the window.<br />
 368         /// </summary>
 369         /// <since_tizen> 3 </since_tizen>
 370         public event EventHandler AddedToWindow
 371         {
 372             add
 373             {
 374                 if (_onWindowEventHandler == null)
 375                 {
 376                     _onWindowEventCallback = OnWindow;
 377                     this.OnWindowSignal().Connect(_onWindowEventCallback);
 378                 }
 379
 380                 _onWindowEventHandler += value;
 381             }
 382
 383             remove
 384             {
 385                 _onWindowEventHandler -= value;
 386
 387                 if (_onWindowEventHandler == null && OnWindowSignal().Empty() == false)
 388                 {
 389                     this.OnWindowSignal().Disconnect(_onWindowEventCallback);
 390                 }
 391             }
 392         }
 393
 394         /// <summary>
 395         /// An event for the OffWindow signal, which can be used to subscribe or unsubscribe the event handler.<br />
 396         /// OffWindow signal is emitted after the view has been disconnected from the window.<br />
 397         /// </summary>
 398         /// <since_tizen> 3 </since_tizen>
 399         public event EventHandler RemovedFromWindow
 400         {
 401             add
 402             {
 403                 if (_offWindowEventHandler == null)
 404                 {
 405                     _offWindowEventCallback = OffWindow;
 406                     this.OffWindowSignal().Connect(_offWindowEventCallback);
 407                 }
 408
 409                 _offWindowEventHandler += value;
 410             }
 411
 412             remove
 413             {
 414                 _offWindowEventHandler -= value;
 415
 416                 if (_offWindowEventHandler == null && OffWindowSignal().Empty() == false)
 417                 {
 418                     this.OffWindowSignal().Disconnect(_offWindowEventCallback);
 419                 }
 420             }
 421         }
 422
 423         /// <summary>
 424         /// An event for visibility change which can be used to subscribe or unsubscribe the event handler.<br />
 425         /// This signal is emitted when the visible property of this or a parent view is changed.<br />
 426         /// </summary>
 427         /// <since_tizen> 3 </since_tizen>
 428         public event EventHandler<VisibilityChangedEventArgs> VisibilityChanged
 429         {
 430             add
 431             {
 432                 if (_visibilityChangedEventHandler == null)
 433                 {
 434                     _visibilityChangedEventCallback = OnVisibilityChanged;
 435                     VisibilityChangedSignal(this).Connect(_visibilityChangedEventCallback);
 436                 }
 437
 438                 _visibilityChangedEventHandler += value;
 439             }
 440
 441             remove
 442             {
 443                 _visibilityChangedEventHandler -= value;
 444
 445                 if (_visibilityChangedEventHandler == null && VisibilityChangedSignal(this).Empty() == false)
 446                 {
 447                     VisibilityChangedSignal(this).Disconnect(_visibilityChangedEventCallback);
 448                 }
 449             }
 450         }
 451
 452         /// <summary>
 453         /// Event for layout direction change which can be used to subscribe/unsubscribe the event handler.<br />
 454         /// This signal is emitted when the layout direction property of this or a parent view is changed.<br />
 455         /// </summary>
 456         /// <since_tizen> 4 </since_tizen>
 457         public event EventHandler<LayoutDirectionChangedEventArgs> LayoutDirectionChanged
 458         {
 459             add
 460             {
 461                 if (_layoutDirectionChangedEventHandler == null)
 462                 {
 463                     _layoutDirectionChangedEventCallback = OnLayoutDirectionChanged;
 464                     LayoutDirectionChangedSignal(this).Connect(_layoutDirectionChangedEventCallback);
 465                 }
 466
 467                 _layoutDirectionChangedEventHandler += value;
 468             }
 469
 470             remove
 471             {
 472                 _layoutDirectionChangedEventHandler -= value;
 473
 474                 if (_layoutDirectionChangedEventHandler == null && LayoutDirectionChangedSignal(this).Empty() == false)
 475                 {
 476                     LayoutDirectionChangedSignal(this).Disconnect(_layoutDirectionChangedEventCallback);
 477                 }
 478             }
 479         }
 480
 481         /// <summary>
 482         /// An event for the ResourcesLoadedSignal signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 483         /// This signal is emitted after all resources required by a view are loaded and ready.<br />
 484         /// </summary>
 485         /// <since_tizen> 3 </since_tizen>
 486         public event EventHandler ResourcesLoaded
 487         {
 488             add
 489             {
 490                 if (_resourcesLoadedEventHandler == null)
 491                 {
 492                     _ResourcesLoadedCallback = OnResourcesLoaded;
 493                     this.ResourcesLoadedSignal().Connect(_ResourcesLoadedCallback);
 494                 }
 495
 496                 _resourcesLoadedEventHandler += value;
 497             }
 498
 499             remove
 500             {
 501                 _resourcesLoadedEventHandler -= value;
 502
 503                 if (_resourcesLoadedEventHandler == null && ResourcesLoadedSignal().Empty() == false)
 504                 {
 505                     this.ResourcesLoadedSignal().Disconnect(_ResourcesLoadedCallback);
 506                 }
 507             }
 508         }
 509
 510         private EventHandler _backKeyPressed;
 511
 512         /// <summary>
 513         /// An event for getting notice when physical back key is pressed.<br />
 514         /// This event is emitted BackKey is up.<br />
 515         /// </summary>
 516         [EditorBrowsable(EditorBrowsableState.Never)]
 517         public event EventHandler BackKeyPressed
 518         {
 519             add
 520             {
 521                 _backKeyPressed += value;
 522                 BackKeyManager.Instance.Subscriber.Add(this);
 523             }
 524
 525             remove
 526             {
 527                 BackKeyManager.Instance.Subscriber.Remove(this);
 528                 _backKeyPressed -= value;
 529             }
 530         }
 531
 532         /// <summary>
 533         /// Function for emitting BackKeyPressed event outside of View instance
 534         /// </summary>
 535         [EditorBrowsable(EditorBrowsableState.Never)]
 536         internal void EmitBackKeyPressed()
 537         {
 538             _backKeyPressed.Invoke(this,null);
 539         }
 540
 541
 542         internal event EventHandler<BackgroundResourceLoadedEventArgs> BackgroundResourceLoaded
 543         {
 544             add
 545             {
 546                 if (_backgroundResourceLoadedEventHandler == null)
 547                 {
 548                     _backgroundResourceLoadedCallback = OnBackgroundResourceLoaded;
 549                     this.ResourcesLoadedSignal().Connect(_backgroundResourceLoadedCallback);
 550                 }
 551
 552                 _backgroundResourceLoadedEventHandler += value;
 553             }
 554             remove
 555             {
 556                 _backgroundResourceLoadedEventHandler -= value;
 557
 558                 if (_backgroundResourceLoadedEventHandler == null && ResourcesLoadedSignal().Empty() == false)
 559                 {
 560                     this.ResourcesLoadedSignal().Disconnect(_backgroundResourceLoadedCallback);
 561                 }
 562             }
 563         }
 564
 565         internal TouchDataSignal InterceptTouchSignal()
 566         {
 567             TouchDataSignal ret = new TouchDataSignal(Interop.ActorSignal.Actor_InterceptTouchSignal(swigCPtr), false);
 568             if (NDalicPINVOKE.SWIGPendingException.Pending)
 569                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 570             return ret;
 571         }
 572
 573         internal TouchDataSignal TouchSignal()
 574         {
 575             TouchDataSignal ret = new TouchDataSignal(Interop.ActorSignal.Actor_TouchSignal(swigCPtr), false);
 576             if (NDalicPINVOKE.SWIGPendingException.Pending)
 577                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 578             return ret;
 579         }
 580
 581         internal HoverSignal HoveredSignal()
 582         {
 583             HoverSignal ret = new HoverSignal(Interop.ActorSignal.Actor_HoveredSignal(swigCPtr), false);
 584             if (NDalicPINVOKE.SWIGPendingException.Pending)
 585                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 586             return ret;
 587         }
 588
 589         internal WheelSignal WheelEventSignal()
 590         {
 591             WheelSignal ret = new WheelSignal(Interop.ActorSignal.Actor_WheelEventSignal(swigCPtr), false);
 592             if (NDalicPINVOKE.SWIGPendingException.Pending)
 593                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 594             return ret;
 595         }
 596
 597         internal ViewSignal OnWindowSignal()
 598         {
 599             ViewSignal ret = new ViewSignal(Interop.ActorSignal.Actor_OnSceneSignal(swigCPtr), false);
 600             if (NDalicPINVOKE.SWIGPendingException.Pending)
 601                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 602             return ret;
 603         }
 604
 605         internal ViewSignal OffWindowSignal()
 606         {
 607             ViewSignal ret = new ViewSignal(Interop.ActorSignal.Actor_OffSceneSignal(swigCPtr), false);
 608             if (NDalicPINVOKE.SWIGPendingException.Pending)
 609                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 610             return ret;
 611         }
 612
 613         internal ViewSignal OnRelayoutSignal()
 614         {
 615             ViewSignal ret = new ViewSignal(Interop.ActorSignal.Actor_OnRelayoutSignal(swigCPtr), false);
 616             if (NDalicPINVOKE.SWIGPendingException.Pending)
 617                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 618             return ret;
 619         }
 620
 621         internal ViewVisibilityChangedSignal VisibilityChangedSignal(View view)
 622         {
 623             ViewVisibilityChangedSignal ret = new ViewVisibilityChangedSignal(Interop.NDalic.VisibilityChangedSignal(View.getCPtr(view)), false);
 624             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 625             return ret;
 626         }
 627
 628         internal ViewLayoutDirectionChangedSignal LayoutDirectionChangedSignal(View view)
 629         {
 630             ViewLayoutDirectionChangedSignal ret = new ViewLayoutDirectionChangedSignal(Interop.Layout.LayoutDirectionChangedSignal(View.getCPtr(view)), false);
 631             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 632             return ret;
 633         }
 634
 635         internal ViewSignal ResourcesLoadedSignal()
 636         {
 637             ViewSignal ret = new ViewSignal(Interop.View.ResourceReadySignal(swigCPtr), false);
 638             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 639             return ret;
 640         }
 641
 642         internal ControlKeySignal KeyEventSignal()
 643         {
 644             ControlKeySignal ret = new ControlKeySignal(Interop.ViewSignal.View_KeyEventSignal(swigCPtr), false);
 645             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 646             return ret;
 647         }
 648
 649         internal KeyInputFocusSignal KeyInputFocusGainedSignal()
 650         {
 651             KeyInputFocusSignal ret = new KeyInputFocusSignal(Interop.ViewSignal.View_KeyInputFocusGainedSignal(swigCPtr), false);
 652             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 653             return ret;
 654         }
 655
 656         internal KeyInputFocusSignal KeyInputFocusLostSignal()
 657         {
 658             KeyInputFocusSignal ret = new KeyInputFocusSignal(Interop.ViewSignal.View_KeyInputFocusLostSignal(swigCPtr), false);
 659             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 660             return ret;
 661         }
 662
 663         private void OnSize2DChanged(int? width, int? height)
 664         {
 665             if (width != null)
 666             {
 667                 Tizen.NUI.Object.SetProperty(this.swigCPtr, View.Property.SIZE_WIDTH, new Tizen.NUI.PropertyValue((float)width));
 668             }
 669             if (height != null)
 670             {
 671                 Tizen.NUI.Object.SetProperty(this.swigCPtr, View.Property.SIZE_HEIGHT, new Tizen.NUI.PropertyValue((float)height));
 672             }
 673         }
 674
 675         private void OnMinimumSizeChanged(int? width, int? height)
 676         {
 677             if (width != null && height != null)
 678             {
 679                 MinimumSize = new Size2D((int)width, (int)height);
 680             }
 681             else if (width != null && height == null)
 682             {
 683                 MinimumSize = new Size2D((int)width, (int)this.GetMinimumSize().Height);
 684             }
 685             else if (width == null && height != null)
 686             {
 687                 MinimumSize = new Size2D((int)this.GetMinimumSize().Width, (int)height);
 688             }
 689             else
 690             {
 691                 //both are null, do nothing.
 692             }
 693         }
 694
 695         private void OnMaximumSizeChanged(int? width, int? height)
 696         {
 697             if (width != null && height != null)
 698             {
 699                 MaximumSize = new Size2D((int)width, (int)height);
 700             }
 701             else if (width != null && height == null)
 702             {
 703                 MaximumSize = new Size2D((int)width, (int)this.GetMaximumSize().Height);
 704             }
 705             else if (width == null && height != null)
 706             {
 707                 MaximumSize = new Size2D((int)this.GetMaximumSize().Width, (int)height);
 708             }
 709             else
 710             {
 711                 //both are null, do nothing.
 712             }
 713         }
 714
 715         private void OnPosition2DChanged(int x, int y)
 716         {
 717             Position2D = new Position2D(x, y);
 718         }
 719
 720         private void OnSizeChanged(float? width, float? height, float? depth)
 721         {
 722             if (width != null)
 723             {
 724                 Tizen.NUI.Object.SetProperty(this.swigCPtr, View.Property.SIZE_WIDTH, new Tizen.NUI.PropertyValue((float)width));
 725             }
 726             if (height != null)
 727             {
 728                 Tizen.NUI.Object.SetProperty(this.swigCPtr, View.Property.SIZE_HEIGHT, new Tizen.NUI.PropertyValue((float)height));
 729             }
 730             if (depth != null)
 731             {
 732                 Tizen.NUI.Object.SetProperty(this.swigCPtr, View.Property.SIZE_DEPTH, new Tizen.NUI.PropertyValue((float)depth));
 733             }
 734         }
 735
 736         private void OnPositionChanged(float x, float y, float z)
 737         {
 738             Position = new Position(x, y, z);
 739         }
 740
 741         private void OnParentOriginChanged(float x, float y, float z)
 742         {
 743             ParentOrigin = new Position(x, y, z);
 744         }
 745
 746         private void OnPivotPointChanged(float x, float y, float z)
 747         {
 748             PivotPoint = new Position(x, y, z);
 749         }
 750
 751         private void OnImageShadowChanged(ShadowBase instance)
 752         {
 753             ImageShadow = (ImageShadow)instance;
 754         }
 755
 756         private void OnBoxShadowChanged(ShadowBase instance)
 757         {
 758             BoxShadow = (Shadow)instance;
 759         }
 760
 761         private void OnBackgroundImageBorderChanged(int left, int right, int bottom, int top)
 762         {
 763             BackgroundImageBorder = new Rectangle(left, right, bottom, top);
 764         }
 765
 766         private void OnKeyInputFocusGained(IntPtr view)
 767         {
 768             if (_keyInputFocusGainedEventHandler != null)
 769             {
 770                 _keyInputFocusGainedEventHandler(this, null);
 771             }
 772         }
 773
 774         private void OnKeyInputFocusLost(IntPtr view)
 775         {
 776             if (_keyInputFocusLostEventHandler != null)
 777             {
 778                 _keyInputFocusLostEventHandler(this, null);
 779             }
 780         }
 781
 782         private bool OnKeyEvent(IntPtr view, IntPtr keyEvent)
 783         {
 784             if (keyEvent == global::System.IntPtr.Zero)
 785             {
 786                 NUILog.Error("keyEvent should not be null!");
 787                 return true;
 788             }
 789
 790             KeyEventArgs e = new KeyEventArgs();
 791
 792             bool result = false;
 793
 794             e.Key = Tizen.NUI.Key.GetKeyFromPtr(keyEvent);
 795
 796             if (_keyEventHandler != null)
 797             {
 798                 Delegate[] delegateList = _keyEventHandler.GetInvocationList();
 799
 800                 // Oring the result of each callback.
 801                 foreach (EventHandlerWithReturnType<object, KeyEventArgs, bool> del in delegateList)
 802                 {
 803                     result |= del(this, e);
 804                 }
 805             }
 806
 807             return result;
 808         }
 809
 810         // Callback for View OnRelayout signal
 811         private void OnRelayout(IntPtr data)
 812         {
 813             if (_onRelayoutEventHandler != null)
 814             {
 815                 _onRelayoutEventHandler(this, null);
 816             }
 817         }
 818
 819         // Callback for View TouchSignal
 820         private bool OnInterceptTouch(IntPtr view, IntPtr touchData)
 821         {
 822             if (touchData == global::System.IntPtr.Zero)
 823             {
 824                 NUILog.Error("touchData should not be null!");
 825                 return true;
 826             }
 827
 828             // DisallowInterceptTouchEvent prevents the parent from intercepting touch.
 829             if (DisallowInterceptTouchEvent)
 830             {
 831                 return false;
 832             }
 833
 834             TouchEventArgs e = new TouchEventArgs();
 835
 836             e.Touch = Tizen.NUI.Touch.GetTouchFromPtr(touchData);
 837
 838             bool consumed = false;
 839
 840             if (_interceptTouchDataEventHandler != null)
 841             {
 842                 consumed = _interceptTouchDataEventHandler(this, e);
 843             }
 844
 845             return consumed;
 846         }
 847
 848         // Callback for View TouchSignal
 849         private bool OnTouch(IntPtr view, IntPtr touchData)
 850         {
 851             if (touchData == global::System.IntPtr.Zero)
 852             {
 853                 NUILog.Error("touchData should not be null!");
 854                 return true;
 855             }
 856
 857             TouchEventArgs e = new TouchEventArgs();
 858
 859             e.Touch = Tizen.NUI.Touch.GetTouchFromPtr(touchData);
 860
 861             bool consumed = false;
 862
 863             if (_touchDataEventHandler != null)
 864             {
 865                 consumed = _touchDataEventHandler(this, e);
 866             }
 867
 868             if (enableControlState && !consumed)
 869             {
 870                 consumed = HandleControlStateOnTouch(e.Touch);
 871             }
 872
 873             return consumed;
 874         }
 875
 876         // Callback for View Hover signal
 877         private bool OnHoverEvent(IntPtr view, IntPtr hoverEvent)
 878         {
 879             if (hoverEvent == global::System.IntPtr.Zero)
 880             {
 881                 NUILog.Error("hoverEvent should not be null!");
 882                 return true;
 883             }
 884
 885             HoverEventArgs e = new HoverEventArgs();
 886
 887             e.Hover = Tizen.NUI.Hover.GetHoverFromPtr(hoverEvent);
 888
 889             if (_hoverEventHandler != null)
 890             {
 891                 return _hoverEventHandler(this, e);
 892             }
 893             return false;
 894         }
 895
 896         // Callback for View Wheel signal
 897         private bool OnWheelEvent(IntPtr view, IntPtr wheelEvent)
 898         {
 899             if (wheelEvent == global::System.IntPtr.Zero)
 900             {
 901                 NUILog.Error("wheelEvent should not be null!");
 902                 return true;
 903             }
 904
 905             WheelEventArgs e = new WheelEventArgs();
 906
 907             e.Wheel = Tizen.NUI.Wheel.GetWheelFromPtr(wheelEvent);
 908
 909             if (_wheelEventHandler != null)
 910             {
 911                 return _wheelEventHandler(this, e);
 912             }
 913             return false;
 914         }
 915
 916         // Callback for View OnWindow signal
 917         private void OnWindow(IntPtr data)
 918         {
 919             if (_onWindowEventHandler != null)
 920             {
 921                 _onWindowEventHandler(this, null);
 922             }
 923         }
 924
 925         // Callback for View OffWindow signal
 926         private void OffWindow(IntPtr data)
 927         {
 928             if (_offWindowEventHandler != null)
 929             {
 930                 _offWindowEventHandler(this, null);
 931             }
 932         }
 933
 934         // Callback for View visibility change signal
 935         private void OnVisibilityChanged(IntPtr data, bool visibility, VisibilityChangeType type)
 936         {
 937             VisibilityChangedEventArgs e = new VisibilityChangedEventArgs();
 938             if (data != null)
 939             {
 940                 e.View = Registry.GetManagedBaseHandleFromNativePtr(data) as View;
 941             }
 942             e.Visibility = visibility;
 943             e.Type = type;
 944
 945             if (_visibilityChangedEventHandler != null)
 946             {
 947                 _visibilityChangedEventHandler(this, e);
 948             }
 949         }
 950
 951         // Callback for View layout direction change signal
 952         private void OnLayoutDirectionChanged(IntPtr data, ViewLayoutDirectionType type)
 953         {
 954             LayoutDirectionChangedEventArgs e = new LayoutDirectionChangedEventArgs();
 955             if (data != null)
 956             {
 957                 e.View = Registry.GetManagedBaseHandleFromNativePtr(data) as View;
 958             }
 959             e.Type = type;
 960
 961             if (_layoutDirectionChangedEventHandler != null)
 962             {
 963                 _layoutDirectionChangedEventHandler(this, e);
 964             }
 965         }
 966
 967         private void OnResourcesLoaded(IntPtr view)
 968         {
 969             if (_resourcesLoadedEventHandler != null)
 970             {
 971                 _resourcesLoadedEventHandler(this, null);
 972             }
 973         }
 974
 975         private void OnBackgroundResourceLoaded(IntPtr view)
 976         {
 977             BackgroundResourceLoadedEventArgs e = new BackgroundResourceLoadedEventArgs();
 978             e.Status = (ResourceLoadingStatusType)Interop.View.View_GetVisualResourceStatus(this.swigCPtr, Property.BACKGROUND);
 979
 980             if (_backgroundResourceLoadedEventHandler != null)
 981             {
 982                 _backgroundResourceLoadedEventHandler(this, e);
 983             }
 984         }
 985
 986         /// <summary>
 987         /// Event argument passed through the ChildAdded event.
 988         /// </summary>
 989         /// <since_tizen> 5 </since_tizen>
 990         public class ChildAddedEventArgs : EventArgs
 991         {
 992             /// <summary>
 993             /// Added child view at moment.
 994             /// </summary>
 995             /// <since_tizen> 5 </since_tizen>
 996             public View Added { get; set; }
 997         }
 998
 999         /// <summary>
1000         /// Event argument passed through the ChildRemoved event.
1001         /// </summary>
1002         /// <since_tizen> 5 </since_tizen>
1003         public class ChildRemovedEventArgs : EventArgs
1004         {
1005             /// <summary>
1006             /// Removed child view at moment.
1007             /// </summary>
1008             /// <since_tizen> 5 </since_tizen>
1009             public View Removed { get; set; }
1010         }
1011
1012         /// <summary>
1013         /// Event arguments that passed via the KeyEvent signal.
1014         /// </summary>
1015         /// <since_tizen> 3 </since_tizen>
1016         public class KeyEventArgs : EventArgs
1017         {
1018             private Key _key;
1019
1020             /// <summary>
1021             /// Key - is the key sent to the view.
1022             /// </summary>
1023             /// <since_tizen> 3 </since_tizen>
1024             public Key Key
1025             {
1026                 get
1027                 {
1028                     return _key;
1029                 }
1030                 set
1031                 {
1032                     _key = value;
1033                 }
1034             }
1035         }
1036
1037         /// <summary>
1038         /// Event arguments that passed via the touch signal.
1039         /// </summary>
1040         /// <since_tizen> 3 </since_tizen>
1041         public class TouchEventArgs : EventArgs
1042         {
1043             private Touch _touch;
1044
1045             /// <summary>
1046             /// Touch - contains the information of touch points.
1047             /// </summary>
1048             /// <since_tizen> 3 </since_tizen>
1049             public Touch Touch
1050             {
1051                 get
1052                 {
1053                     return _touch;
1054                 }
1055                 set
1056                 {
1057                     _touch = value;
1058                 }
1059             }
1060         }
1061
1062         /// <summary>
1063         /// Event arguments that passed via the hover signal.
1064         /// </summary>
1065         /// <since_tizen> 3 </since_tizen>
1066         public class HoverEventArgs : EventArgs
1067         {
1068             private Hover _hover;
1069
1070             /// <summary>
1071             /// Hover - contains touch points that represent the points that are currently being hovered or the points where a hover has stopped.
1072             /// </summary>
1073             /// <since_tizen> 3 </since_tizen>
1074             public Hover Hover
1075             {
1076                 get
1077                 {
1078                     return _hover;
1079                 }
1080                 set
1081                 {
1082                     _hover = value;
1083                 }
1084             }
1085         }
1086
1087         /// <summary>
1088         /// Event arguments that passed via the wheel signal.
1089         /// </summary>
1090         /// <since_tizen> 3 </since_tizen>
1091         public class WheelEventArgs : EventArgs
1092         {
1093             private Wheel _wheel;
1094
1095             /// <summary>
1096             /// WheelEvent - store a wheel rolling type: MOUSE_WHEEL or CUSTOM_WHEEL.
1097             /// </summary>
1098             /// <since_tizen> 3 </since_tizen>
1099             public Wheel Wheel
1100             {
1101                 get
1102                 {
1103                     return _wheel;
1104                 }
1105                 set
1106                 {
1107                     _wheel = value;
1108                 }
1109             }
1110         }
1111
1112         /// <summary>
1113         /// Event arguments of visibility changed.
1114         /// </summary>
1115         /// <since_tizen> 3 </since_tizen>
1116         public class VisibilityChangedEventArgs : EventArgs
1117         {
1118             private View _view;
1119             private bool _visibility;
1120             private VisibilityChangeType _type;
1121
1122             /// <summary>
1123             /// The view, or child of view, whose visibility has changed.
1124             /// </summary>
1125             /// <since_tizen> 3 </since_tizen>
1126             public View View
1127             {
1128                 get
1129                 {
1130                     return _view;
1131                 }
1132                 set
1133                 {
1134                     _view = value;
1135                 }
1136             }
1137
1138             /// <summary>
1139             /// Whether the view is now visible or not.
1140             /// </summary>
1141             /// <since_tizen> 3 </since_tizen>
1142             public bool Visibility
1143             {
1144                 get
1145                 {
1146                     return _visibility;
1147                 }
1148                 set
1149                 {
1150                     _visibility = value;
1151                 }
1152             }
1153
1154             /// <summary>
1155             /// Whether the view's visible property has changed or a parent's.
1156             /// </summary>
1157             /// <since_tizen> 3 </since_tizen>
1158             public VisibilityChangeType Type
1159             {
1160                 get
1161                 {
1162                     return _type;
1163                 }
1164                 set
1165                 {
1166                     _type = value;
1167                 }
1168             }
1169         }
1170
1171         /// <summary>
1172         /// Event arguments of layout direction changed.
1173         /// </summary>
1174         /// <since_tizen> 4 </since_tizen>
1175         public class LayoutDirectionChangedEventArgs : EventArgs
1176         {
1177             private View _view;
1178             private ViewLayoutDirectionType _type;
1179
1180             /// <summary>
1181             /// The view, or child of view, whose layout direction has changed.
1182             /// </summary>
1183             /// <since_tizen> 4 </since_tizen>
1184             public View View
1185             {
1186                 get
1187                 {
1188                     return _view;
1189                 }
1190                 set
1191                 {
1192                     _view = value;
1193                 }
1194             }
1195
1196             /// <summary>
1197             /// Whether the view's layout direction property has changed or a parent's.
1198             /// </summary>
1199             /// <since_tizen> 4 </since_tizen>
1200             public ViewLayoutDirectionType Type
1201             {
1202                 get
1203                 {
1204                     return _type;
1205                 }
1206                 set
1207                 {
1208                     _type = value;
1209                 }
1210             }
1211         }
1212
1213         internal class BackgroundResourceLoadedEventArgs : EventArgs
1214         {
1215             private ResourceLoadingStatusType status = ResourceLoadingStatusType.Invalid;
1216             public ResourceLoadingStatusType Status
1217             {
1218                 get
1219                 {
1220                     return status;
1221                 }
1222                 set
1223                 {
1224                     status = value;
1225                 }
1226             }
1227         }
1228
1229         /// <summary>
1230         /// The class represents the information of the situation where the View's control state changes.
1231         /// </summary>
1232         [EditorBrowsable(EditorBrowsableState.Never)]
1233         public class ControlStateChangedEventArgs : EventArgs
1234         {
1235             /// <summary>
1236             /// Create an instance with mandatory fields.
1237             /// </summary>
1238             /// <param name="previousState">The previous control state.</param>
1239             /// <param name="currentState">The current control state.</param>
1240             [EditorBrowsable(EditorBrowsableState.Never)]
1241             public ControlStateChangedEventArgs(ControlState previousState, ControlState currentState)
1242             {
1243                 PreviousState = previousState;
1244                 CurrentState = currentState;
1245             }
1246
1247             /// <summary>
1248             /// The previous control state.
1249             /// </summary>
1250             [EditorBrowsable(EditorBrowsableState.Never)]
1251             public ControlState PreviousState { get; }
1252
1253             /// <summary>
1254             /// The current control state.
1255             /// </summary>
1256             [EditorBrowsable(EditorBrowsableState.Never)]
1257             public ControlState CurrentState { get; }
1258         }
1259
1260         private EventHandlerWithReturnType<object, WheelEventArgs, bool> WindowWheelEventHandler;
1261         private void OnWindowWheelEvent(object sender, Window.WheelEventArgs e)
1262         {
1263             if(e != null)
1264             {
1265                 if(e.Wheel.Type == Wheel.WheelType.CustomWheel)
1266                 {
1267                     var arg = new WheelEventArgs()
1268                     {
1269                         Wheel = e.Wheel,
1270                     };
1271                     WindowWheelEventHandler?.Invoke(this, arg);
1272                 }
1273             }
1274         }
1275
1276     }
1277 }