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

   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 using System;
  19 using System.ComponentModel;
  20 using System.Runtime.InteropServices;
  21
  22 namespace Tizen.NUI.BaseComponents
  23 {
  24     /// <summary>
  25     /// View is the base class for all views.
  26     /// </summary>
  27     /// <since_tizen> 3 </since_tizen>
  28     public partial class View
  29     {
  30         private EventHandler offWindowEventHandler;
  31         private OffWindowEventCallbackType offWindowEventCallback;
  32         private EventHandlerWithReturnType<object, WheelEventArgs, bool> wheelEventHandler;
  33         private WheelEventCallbackType wheelEventCallback;
  34         private EventHandlerWithReturnType<object, KeyEventArgs, bool> keyEventHandler;
  35         private KeyCallbackType keyCallback;
  36         private EventHandlerWithReturnType<object, TouchEventArgs, bool> interceptTouchDataEventHandler;
  37         private TouchDataCallbackType interceptTouchDataCallback;
  38         private EventHandlerWithReturnType<object, TouchEventArgs, bool> touchDataEventHandler;
  39         private TouchDataCallbackType touchDataCallback;
  40         private EventHandlerWithReturnType<object, HoverEventArgs, bool> hoverEventHandler;
  41         private HoverEventCallbackType hoverEventCallback;
  42         private EventHandler<VisibilityChangedEventArgs> visibilityChangedEventHandler;
  43         private VisibilityChangedEventCallbackType visibilityChangedEventCallback;
  44         private EventHandler keyInputFocusGainedEventHandler;
  45         private KeyInputFocusGainedCallbackType keyInputFocusGainedCallback;
  46         private EventHandler keyInputFocusLostEventHandler;
  47         private KeyInputFocusLostCallbackType keyInputFocusLostCallback;
  48         private EventHandler onRelayoutEventHandler;
  49         private OnRelayoutEventCallbackType onRelayoutEventCallback;
  50         private EventHandler onWindowEventHandler;
  51         private OnWindowEventCallbackType onWindowEventCallback;
  52         private EventHandler<LayoutDirectionChangedEventArgs> layoutDirectionChangedEventHandler;
  53         private LayoutDirectionChangedEventCallbackType layoutDirectionChangedEventCallback;
  54         // Resource Ready Signal
  55         private EventHandler resourcesLoadedEventHandler;
  56         private ResourcesLoadedCallbackType ResourcesLoadedCallback;
  57         private EventHandler<BackgroundResourceLoadedEventArgs> backgroundResourceLoadedEventHandler;
  58         private _backgroundResourceLoadedCallbackType backgroundResourceLoadedCallback;
  59         private OnWindowEventCallbackType onWindowSendEventCallback;
  60         private void SendViewAddedEventToWindow(IntPtr data)
  61         {
  62             // Unused parameter
  63             _ = data;
  64             NUIApplication.GetDefaultWindow()?.SendViewAdded(this);
  65         }
  66
  67         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  68         private delegate void OffWindowEventCallbackType(IntPtr control);
  69         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  70         private delegate bool WheelEventCallbackType(IntPtr view, IntPtr wheelEvent);
  71         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  72         private delegate bool KeyCallbackType(IntPtr control, IntPtr keyEvent);
  73         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  74         private delegate bool TouchDataCallbackType(IntPtr view, IntPtr touchData);
  75         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  76         private delegate bool HoverEventCallbackType(IntPtr view, IntPtr hoverEvent);
  77         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  78         private delegate void VisibilityChangedEventCallbackType(IntPtr data, bool visibility, VisibilityChangeType type);
  79         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  80         private delegate void ResourcesLoadedCallbackType(IntPtr control);
  81         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  82         private delegate void _backgroundResourceLoadedCallbackType(IntPtr view);
  83         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  84         private delegate void KeyInputFocusGainedCallbackType(IntPtr control);
  85         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  86         private delegate void KeyInputFocusLostCallbackType(IntPtr control);
  87         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  88         private delegate void OnRelayoutEventCallbackType(IntPtr control);
  89         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  90         private delegate void OnWindowEventCallbackType(IntPtr control);
  91         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  92         private delegate void LayoutDirectionChangedEventCallbackType(IntPtr data, ViewLayoutDirectionType type);
  93
  94         /// <summary>
  95         /// Event when a child is removed.
  96         /// </summary>
  97         /// <since_tizen> 5 </since_tizen>
  98         public new event EventHandler<ChildRemovedEventArgs> ChildRemoved;
  99         /// <summary>
 100         /// Event when a child is added.
 101         /// </summary>
 102         /// <since_tizen> 5 </since_tizen>
 103         public new event EventHandler<ChildAddedEventArgs> ChildAdded;
 104
 105         /// <summary>
 106         /// An event for the KeyInputFocusGained signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 107         /// The KeyInputFocusGained signal is emitted when the control gets the key input focus.<br />
 108         /// </summary>
 109         /// <since_tizen> 3 </since_tizen>
 110         public event EventHandler FocusGained
 111         {
 112             add
 113             {
 114                 if (keyInputFocusGainedEventHandler == null)
 115                 {
 116                     keyInputFocusGainedCallback = OnKeyInputFocusGained;
 117                     this.KeyInputFocusGainedSignal().Connect(keyInputFocusGainedCallback);
 118                 }
 119
 120                 keyInputFocusGainedEventHandler += value;
 121             }
 122
 123             remove
 124             {
 125                 keyInputFocusGainedEventHandler -= value;
 126
 127                 if (keyInputFocusGainedEventHandler == null && KeyInputFocusGainedSignal().Empty() == false)
 128                 {
 129                     this.KeyInputFocusGainedSignal().Disconnect(keyInputFocusGainedCallback);
 130                 }
 131             }
 132         }
 133
 134         /// <summary>
 135         /// An event for the KeyInputFocusLost signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 136         /// The KeyInputFocusLost signal is emitted when the control loses the key input focus.<br />
 137         /// </summary>
 138         /// <since_tizen> 3 </since_tizen>
 139         public event EventHandler FocusLost
 140         {
 141             add
 142             {
 143                 if (keyInputFocusLostEventHandler == null)
 144                 {
 145                     keyInputFocusLostCallback = OnKeyInputFocusLost;
 146                     this.KeyInputFocusLostSignal().Connect(keyInputFocusLostCallback);
 147                 }
 148
 149                 keyInputFocusLostEventHandler += value;
 150             }
 151
 152             remove
 153             {
 154                 keyInputFocusLostEventHandler -= value;
 155
 156                 if (keyInputFocusLostEventHandler == null && KeyInputFocusLostSignal().Empty() == false)
 157                 {
 158                     this.KeyInputFocusLostSignal().Disconnect(keyInputFocusLostCallback);
 159                 }
 160             }
 161         }
 162
 163         /// <summary>
 164         /// An event for the KeyPressed signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 165         /// The KeyPressed signal is emitted when the key event is received.<br />
 166         /// </summary>
 167         /// <since_tizen> 3 </since_tizen>
 168         public event EventHandlerWithReturnType<object, KeyEventArgs, bool> KeyEvent
 169         {
 170             add
 171             {
 172                 if (keyEventHandler == null)
 173                 {
 174                     keyCallback = OnKeyEvent;
 175                     this.KeyEventSignal().Connect(keyCallback);
 176                 }
 177
 178                 keyEventHandler += value;
 179             }
 180
 181             remove
 182             {
 183                 keyEventHandler -= value;
 184
 185                 if (keyEventHandler == null && KeyEventSignal().Empty() == false)
 186                 {
 187                     this.KeyEventSignal().Disconnect(keyCallback);
 188                 }
 189             }
 190         }
 191
 192         /// <summary>
 193         /// An event for the OnRelayout signal which can be used to subscribe or unsubscribe the event handler.<br />
 194         /// The OnRelayout signal is emitted after the size has been set on the view during relayout.<br />
 195         /// </summary>
 196         /// <since_tizen> 3 </since_tizen>
 197         public event EventHandler Relayout
 198         {
 199             add
 200             {
 201                 if (onRelayoutEventHandler == null)
 202                 {
 203                     onRelayoutEventCallback = OnRelayout;
 204                     this.OnRelayoutSignal().Connect(onRelayoutEventCallback);
 205                 }
 206
 207                 onRelayoutEventHandler += value;
 208             }
 209
 210             remove
 211             {
 212                 onRelayoutEventHandler -= value;
 213
 214                 if (onRelayoutEventHandler == null && OnRelayoutSignal().Empty() == false)
 215                 {
 216                     this.OnRelayoutSignal().Disconnect(onRelayoutEventCallback);
 217                     onRelayoutEventCallback = null;
 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 intercepting 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                     onWindowEventCallback = null;
 391                 }
 392             }
 393         }
 394
 395         /// <summary>
 396         /// An event for the OffWindow signal, which can be used to subscribe or unsubscribe the event handler.<br />
 397         /// OffWindow signal is emitted after the view has been disconnected from the window.<br />
 398         /// </summary>
 399         /// <since_tizen> 3 </since_tizen>
 400         public event EventHandler RemovedFromWindow
 401         {
 402             add
 403             {
 404                 if (offWindowEventHandler == null)
 405                 {
 406                     offWindowEventCallback = OffWindow;
 407                     this.OffWindowSignal().Connect(offWindowEventCallback);
 408                 }
 409
 410                 offWindowEventHandler += value;
 411             }
 412
 413             remove
 414             {
 415                 offWindowEventHandler -= value;
 416
 417                 if (offWindowEventHandler == null && OffWindowSignal().Empty() == false)
 418                 {
 419                     this.OffWindowSignal().Disconnect(offWindowEventCallback);
 420                     offWindowEventCallback = null;
 421                 }
 422             }
 423         }
 424
 425         /// <summary>
 426         /// An event for visibility change which can be used to subscribe or unsubscribe the event handler.<br />
 427         /// This signal is emitted when the visible property of this or a parent view is changed.<br />
 428         /// </summary>
 429         /// <since_tizen> 3 </since_tizen>
 430         public event EventHandler<VisibilityChangedEventArgs> VisibilityChanged
 431         {
 432             add
 433             {
 434                 if (visibilityChangedEventHandler == null)
 435                 {
 436                     visibilityChangedEventCallback = OnVisibilityChanged;
 437                     VisibilityChangedSignal(this).Connect(visibilityChangedEventCallback);
 438                 }
 439
 440                 visibilityChangedEventHandler += value;
 441             }
 442
 443             remove
 444             {
 445                 visibilityChangedEventHandler -= value;
 446
 447                 if (visibilityChangedEventHandler == null && VisibilityChangedSignal(this).Empty() == false)
 448                 {
 449                     VisibilityChangedSignal(this).Disconnect(visibilityChangedEventCallback);
 450                 }
 451             }
 452         }
 453
 454         /// <summary>
 455         /// Event for layout direction change which can be used to subscribe/unsubscribe the event handler.<br />
 456         /// This signal is emitted when the layout direction property of this or a parent view is changed.<br />
 457         /// </summary>
 458         /// <since_tizen> 4 </since_tizen>
 459         public event EventHandler<LayoutDirectionChangedEventArgs> LayoutDirectionChanged
 460         {
 461             add
 462             {
 463                 if (layoutDirectionChangedEventHandler == null)
 464                 {
 465                     layoutDirectionChangedEventCallback = OnLayoutDirectionChanged;
 466                     LayoutDirectionChangedSignal(this).Connect(layoutDirectionChangedEventCallback);
 467                 }
 468
 469                 layoutDirectionChangedEventHandler += value;
 470             }
 471
 472             remove
 473             {
 474                 layoutDirectionChangedEventHandler -= value;
 475
 476                 if (layoutDirectionChangedEventHandler == null && LayoutDirectionChangedSignal(this).Empty() == false)
 477                 {
 478                     LayoutDirectionChangedSignal(this).Disconnect(layoutDirectionChangedEventCallback);
 479                 }
 480             }
 481         }
 482
 483         /// <summary>
 484         /// An event for the ResourcesLoadedSignal signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
 485         /// This signal is emitted after all resources required by a view are loaded and ready.<br />
 486         /// </summary>
 487         /// <since_tizen> 3 </since_tizen>
 488         public event EventHandler ResourcesLoaded
 489         {
 490             add
 491             {
 492                 if (resourcesLoadedEventHandler == null)
 493                 {
 494                     ResourcesLoadedCallback = OnResourcesLoaded;
 495                     this.ResourcesLoadedSignal().Connect(ResourcesLoadedCallback);
 496                 }
 497
 498                 resourcesLoadedEventHandler += value;
 499             }
 500
 501             remove
 502             {
 503                 resourcesLoadedEventHandler -= value;
 504
 505                 if (resourcesLoadedEventHandler == null && ResourcesLoadedSignal().Empty() == false)
 506                 {
 507                     this.ResourcesLoadedSignal().Disconnect(ResourcesLoadedCallback);
 508                     ResourcesLoadedCallback = null;
 509                 }
 510             }
 511         }
 512
 513         private EventHandler _backKeyPressed;
 514
 515         /// <summary>
 516         /// An event for getting notice when physical back key is pressed.<br />
 517         /// This event is emitted BackKey is up.<br />
 518         /// </summary>
 519         [EditorBrowsable(EditorBrowsableState.Never)]
 520         public event EventHandler BackKeyPressed
 521         {
 522             add
 523             {
 524                 _backKeyPressed += value;
 525                 BackKeyManager.Instance.Subscriber.Add(this);
 526             }
 527
 528             remove
 529             {
 530                 BackKeyManager.Instance.Subscriber.Remove(this);
 531                 _backKeyPressed -= value;
 532             }
 533         }
 534
 535         /// <summary>
 536         /// Function for emitting BackKeyPressed event outside of View instance
 537         /// </summary>
 538         [EditorBrowsable(EditorBrowsableState.Never)]
 539         internal void EmitBackKeyPressed()
 540         {
 541             _backKeyPressed.Invoke(this, null);
 542         }
 543
 544
 545         internal event EventHandler<BackgroundResourceLoadedEventArgs> BackgroundResourceLoaded
 546         {
 547             add
 548             {
 549                 if (backgroundResourceLoadedEventHandler == null)
 550                 {
 551                     backgroundResourceLoadedCallback = OnBackgroundResourceLoaded;
 552                     this.ResourcesLoadedSignal().Connect(backgroundResourceLoadedCallback);
 553                 }
 554
 555                 backgroundResourceLoadedEventHandler += value;
 556             }
 557             remove
 558             {
 559                 backgroundResourceLoadedEventHandler -= value;
 560
 561                 if (backgroundResourceLoadedEventHandler == null && ResourcesLoadedSignal().Empty() == false)
 562                 {
 563                     this.ResourcesLoadedSignal().Disconnect(backgroundResourceLoadedCallback);
 564                     backgroundResourceLoadedCallback = null;
 565                 }
 566             }
 567         }
 568
 569         internal TouchDataSignal InterceptTouchSignal()
 570         {
 571             TouchDataSignal ret = new TouchDataSignal(Interop.ActorSignal.ActorInterceptTouchSignal(SwigCPtr), false);
 572             if (NDalicPINVOKE.SWIGPendingException.Pending)
 573                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 574             return ret;
 575         }
 576
 577         internal TouchDataSignal TouchSignal()
 578         {
 579             TouchDataSignal ret = new TouchDataSignal(Interop.ActorSignal.ActorTouchSignal(SwigCPtr), false);
 580             if (NDalicPINVOKE.SWIGPendingException.Pending)
 581                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 582             return ret;
 583         }
 584
 585         internal HoverSignal HoveredSignal()
 586         {
 587             HoverSignal ret = new HoverSignal(Interop.ActorSignal.ActorHoveredSignal(SwigCPtr), false);
 588             if (NDalicPINVOKE.SWIGPendingException.Pending)
 589                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 590             return ret;
 591         }
 592
 593         internal WheelSignal WheelEventSignal()
 594         {
 595             WheelSignal ret = new WheelSignal(Interop.ActorSignal.ActorWheelEventSignal(SwigCPtr), false);
 596             if (NDalicPINVOKE.SWIGPendingException.Pending)
 597                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 598             return ret;
 599         }
 600
 601         internal ViewSignal OnWindowSignal()
 602         {
 603             ViewSignal ret = new ViewSignal(Interop.ActorSignal.ActorOnSceneSignal(SwigCPtr), false);
 604             if (NDalicPINVOKE.SWIGPendingException.Pending)
 605                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 606             return ret;
 607         }
 608
 609         internal ViewSignal OffWindowSignal()
 610         {
 611             ViewSignal ret = new ViewSignal(Interop.ActorSignal.ActorOffSceneSignal(SwigCPtr), false);
 612             if (NDalicPINVOKE.SWIGPendingException.Pending)
 613                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 614             return ret;
 615         }
 616
 617         internal ViewSignal OnRelayoutSignal()
 618         {
 619             ViewSignal ret = new ViewSignal(Interop.ActorSignal.ActorOnRelayoutSignal(SwigCPtr), false);
 620             if (NDalicPINVOKE.SWIGPendingException.Pending)
 621                 throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 622             return ret;
 623         }
 624
 625         internal ViewVisibilityChangedSignal VisibilityChangedSignal(View view)
 626         {
 627             ViewVisibilityChangedSignal ret = new ViewVisibilityChangedSignal(Interop.NDalic.VisibilityChangedSignal(View.getCPtr(view)), false);
 628             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 629             return ret;
 630         }
 631
 632         internal ViewLayoutDirectionChangedSignal LayoutDirectionChangedSignal(View view)
 633         {
 634             ViewLayoutDirectionChangedSignal ret = new ViewLayoutDirectionChangedSignal(Interop.Layout.LayoutDirectionChangedSignal(View.getCPtr(view)), false);
 635             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 636             return ret;
 637         }
 638
 639         internal ViewSignal ResourcesLoadedSignal()
 640         {
 641             ViewSignal ret = new ViewSignal(Interop.View.ResourceReadySignal(SwigCPtr), false);
 642             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 643             return ret;
 644         }
 645
 646         internal ControlKeySignal KeyEventSignal()
 647         {
 648             ControlKeySignal ret = new ControlKeySignal(Interop.ViewSignal.KeyEventSignal(SwigCPtr), false);
 649             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 650             return ret;
 651         }
 652
 653         internal KeyInputFocusSignal KeyInputFocusGainedSignal()
 654         {
 655             KeyInputFocusSignal ret = new KeyInputFocusSignal(Interop.ViewSignal.KeyInputFocusGainedSignal(SwigCPtr), false);
 656             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 657             return ret;
 658         }
 659
 660         internal KeyInputFocusSignal KeyInputFocusLostSignal()
 661         {
 662             KeyInputFocusSignal ret = new KeyInputFocusSignal(Interop.ViewSignal.KeyInputFocusLostSignal(SwigCPtr), false);
 663             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 664             return ret;
 665         }
 666
 667         private void OnSize2DChanged(int? width, int? height)
 668         {
 669             PropertyValue temp;
 670             if (width != null)
 671             {
 672                 temp = new Tizen.NUI.PropertyValue((float)width);
 673                 Tizen.NUI.Object.SetProperty(this.SwigCPtr, View.Property.SizeWidth, temp);
 674                 temp.Dispose();
 675             }
 676             if (height != null)
 677             {
 678                 temp = new Tizen.NUI.PropertyValue((float)height);
 679                 Tizen.NUI.Object.SetProperty(this.SwigCPtr, View.Property.SizeHeight, temp);
 680                 temp.Dispose();
 681             }
 682         }
 683
 684         private void OnMinimumSizeChanged(int? width, int? height)
 685         {
 686             if (width != null && height != null)
 687             {
 688                 MinimumSize = new Size2D((int)width, (int)height);
 689             }
 690             else if (width != null && height == null)
 691             {
 692                 MinimumSize = new Size2D((int)width, (int)this.GetMinimumSize().Height);
 693             }
 694             else if (width == null && height != null)
 695             {
 696                 MinimumSize = new Size2D((int)this.GetMinimumSize().Width, (int)height);
 697             }
 698             else
 699             {
 700                 //both are null, do nothing.
 701             }
 702         }
 703
 704         private void OnMaximumSizeChanged(int? width, int? height)
 705         {
 706             if (width != null && height != null)
 707             {
 708                 MaximumSize = new Size2D((int)width, (int)height);
 709             }
 710             else if (width != null && height == null)
 711             {
 712                 MaximumSize = new Size2D((int)width, (int)this.GetMaximumSize().Height);
 713             }
 714             else if (width == null && height != null)
 715             {
 716                 MaximumSize = new Size2D((int)this.GetMaximumSize().Width, (int)height);
 717             }
 718             else
 719             {
 720                 //both are null, do nothing.
 721             }
 722         }
 723
 724         private void OnPosition2DChanged(int x, int y)
 725         {
 726             Position2D = new Position2D(x, y);
 727         }
 728
 729         private void OnSizeChanged(float? width, float? height, float? depth)
 730         {
 731             PropertyValue temp;
 732             if (width != null)
 733             {
 734                 temp = new Tizen.NUI.PropertyValue((float)width);
 735                 Tizen.NUI.Object.SetProperty(this.SwigCPtr, View.Property.SizeWidth, temp);
 736                 temp.Dispose();
 737             }
 738             if (height != null)
 739             {
 740                 temp = new Tizen.NUI.PropertyValue((float)height);
 741                 Tizen.NUI.Object.SetProperty(this.SwigCPtr, View.Property.SizeHeight, temp);
 742                 temp.Dispose();
 743             }
 744             if (depth != null)
 745             {
 746                 temp = new Tizen.NUI.PropertyValue((float)depth);
 747                 Tizen.NUI.Object.SetProperty(this.SwigCPtr, View.Property.SizeDepth, temp);
 748                 temp.Dispose();
 749             }
 750         }
 751
 752         private void OnPositionChanged(float x, float y, float z)
 753         {
 754             Position = new Position(x, y, z);
 755         }
 756
 757         private void OnParentOriginChanged(float x, float y, float z)
 758         {
 759             ParentOrigin = new Position(x, y, z);
 760         }
 761
 762         private void OnPivotPointChanged(float x, float y, float z)
 763         {
 764             PivotPoint = new Position(x, y, z);
 765         }
 766
 767         private void OnImageShadowChanged(ShadowBase instance)
 768         {
 769             ImageShadow = (ImageShadow)instance;
 770         }
 771
 772         private void OnBoxShadowChanged(ShadowBase instance)
 773         {
 774             BoxShadow = (Shadow)instance;
 775         }
 776
 777         private void OnBackgroundImageBorderChanged(int left, int right, int bottom, int top)
 778         {
 779             BackgroundImageBorder = new Rectangle(left, right, bottom, top);
 780         }
 781
 782         private void OnKeyInputFocusGained(IntPtr view)
 783         {
 784             if (keyInputFocusGainedEventHandler != null)
 785             {
 786                 keyInputFocusGainedEventHandler(this, null);
 787             }
 788         }
 789
 790         private void OnKeyInputFocusLost(IntPtr view)
 791         {
 792             if (keyInputFocusLostEventHandler != null)
 793             {
 794                 keyInputFocusLostEventHandler(this, null);
 795             }
 796         }
 797
 798         private bool OnKeyEvent(IntPtr view, IntPtr keyEvent)
 799         {
 800             if (keyEvent == global::System.IntPtr.Zero)
 801             {
 802                 NUILog.Error("keyEvent should not be null!");
 803                 return true;
 804             }
 805
 806             KeyEventArgs e = new KeyEventArgs();
 807
 808             bool result = false;
 809
 810             e.Key = Tizen.NUI.Key.GetKeyFromPtr(keyEvent);
 811
 812             if (keyEventHandler != null)
 813             {
 814                 Delegate[] delegateList = keyEventHandler.GetInvocationList();
 815
 816                 // Oring the result of each callback.
 817                 foreach (EventHandlerWithReturnType<object, KeyEventArgs, bool> del in delegateList)
 818                 {
 819                     result |= del(this, e);
 820                 }
 821             }
 822
 823             return result;
 824         }
 825
 826         // Callback for View OnRelayout signal
 827         private void OnRelayout(IntPtr data)
 828         {
 829             if (onRelayoutEventHandler != null)
 830             {
 831                 onRelayoutEventHandler(this, null);
 832             }
 833         }
 834
 835         // Callback for View TouchSignal
 836         private bool OnInterceptTouch(IntPtr view, IntPtr touchData)
 837         {
 838             if (touchData == global::System.IntPtr.Zero)
 839             {
 840                 NUILog.Error("touchData should not be null!");
 841                 return true;
 842             }
 843
 844             // DisallowInterceptTouchEvent prevents the parent from intercepting touch.
 845             if (DisallowInterceptTouchEvent)
 846             {
 847                 return false;
 848             }
 849
 850             TouchEventArgs e = new TouchEventArgs();
 851
 852             e.Touch = Tizen.NUI.Touch.GetTouchFromPtr(touchData);
 853
 854             bool consumed = false;
 855
 856             if (interceptTouchDataEventHandler != null)
 857             {
 858                 consumed = interceptTouchDataEventHandler(this, e);
 859             }
 860
 861             return consumed;
 862         }
 863
 864         // Callback for View TouchSignal
 865         private bool OnTouch(IntPtr view, IntPtr touchData)
 866         {
 867             if (touchData == global::System.IntPtr.Zero)
 868             {
 869                 NUILog.Error("touchData should not be null!");
 870                 return true;
 871             }
 872
 873             TouchEventArgs e = new TouchEventArgs();
 874
 875             e.Touch = Tizen.NUI.Touch.GetTouchFromPtr(touchData);
 876
 877             bool consumed = false;
 878
 879             if (touchDataEventHandler != null)
 880             {
 881                 consumed = touchDataEventHandler(this, e);
 882             }
 883
 884             if (enableControlState && !consumed)
 885             {
 886                 consumed = HandleControlStateOnTouch(e.Touch);
 887             }
 888
 889             return consumed;
 890         }
 891
 892         // Callback for View Hover signal
 893         private bool OnHoverEvent(IntPtr view, IntPtr hoverEvent)
 894         {
 895             if (hoverEvent == global::System.IntPtr.Zero)
 896             {
 897                 NUILog.Error("hoverEvent should not be null!");
 898                 return true;
 899             }
 900
 901             HoverEventArgs e = new HoverEventArgs();
 902
 903             e.Hover = Tizen.NUI.Hover.GetHoverFromPtr(hoverEvent);
 904
 905             if (hoverEventHandler != null)
 906             {
 907                 return hoverEventHandler(this, e);
 908             }
 909             return false;
 910         }
 911
 912         // Callback for View Wheel signal
 913         private bool OnWheelEvent(IntPtr view, IntPtr wheelEvent)
 914         {
 915             if (wheelEvent == global::System.IntPtr.Zero)
 916             {
 917                 NUILog.Error("wheelEvent should not be null!");
 918                 return true;
 919             }
 920
 921             WheelEventArgs e = new WheelEventArgs();
 922
 923             e.Wheel = Tizen.NUI.Wheel.GetWheelFromPtr(wheelEvent);
 924
 925             if (wheelEventHandler != null)
 926             {
 927                 return wheelEventHandler(this, e);
 928             }
 929             return false;
 930         }
 931
 932         // Callback for View OnWindow signal
 933         private void OnWindow(IntPtr data)
 934         {
 935             if (onWindowEventHandler != null)
 936             {
 937                 onWindowEventHandler(this, null);
 938             }
 939         }
 940
 941         // Callback for View OffWindow signal
 942         private void OffWindow(IntPtr data)
 943         {
 944             if (offWindowEventHandler != null)
 945             {
 946                 offWindowEventHandler(this, null);
 947             }
 948         }
 949
 950         // Callback for View visibility change signal
 951         private void OnVisibilityChanged(IntPtr data, bool visibility, VisibilityChangeType type)
 952         {
 953             VisibilityChangedEventArgs e = new VisibilityChangedEventArgs();
 954             if (data != null)
 955             {
 956                 e.View = Registry.GetManagedBaseHandleFromNativePtr(data) as View;
 957             }
 958             e.Visibility = visibility;
 959             e.Type = type;
 960
 961             if (visibilityChangedEventHandler != null)
 962             {
 963                 visibilityChangedEventHandler(this, e);
 964             }
 965         }
 966
 967         // Callback for View layout direction change signal
 968         private void OnLayoutDirectionChanged(IntPtr data, ViewLayoutDirectionType type)
 969         {
 970             LayoutDirectionChangedEventArgs e = new LayoutDirectionChangedEventArgs();
 971             if (data != null)
 972             {
 973                 e.View = Registry.GetManagedBaseHandleFromNativePtr(data) as View;
 974             }
 975             e.Type = type;
 976
 977             if (layoutDirectionChangedEventHandler != null)
 978             {
 979                 layoutDirectionChangedEventHandler(this, e);
 980             }
 981         }
 982
 983         private void OnResourcesLoaded(IntPtr view)
 984         {
 985             if (resourcesLoadedEventHandler != null)
 986             {
 987                 resourcesLoadedEventHandler(this, null);
 988             }
 989         }
 990
 991         private void OnBackgroundResourceLoaded(IntPtr view)
 992         {
 993             BackgroundResourceLoadedEventArgs e = new BackgroundResourceLoadedEventArgs();
 994             e.Status = (ResourceLoadingStatusType)Interop.View.GetVisualResourceStatus(this.SwigCPtr, Property.BACKGROUND);
 995
 996             if (backgroundResourceLoadedEventHandler != null)
 997             {
 998                 backgroundResourceLoadedEventHandler(this, e);
 999             }
1000         }
1001
1002         /// <summary>
1003         /// Event argument passed through the ChildAdded event.
1004         /// </summary>
1005         /// <since_tizen> 5 </since_tizen>
1006         public class ChildAddedEventArgs : EventArgs
1007         {
1008             /// <summary>
1009             /// Added child view at moment.
1010             /// </summary>
1011             /// <since_tizen> 5 </since_tizen>
1012             public View Added { get; set; }
1013         }
1014
1015         /// <summary>
1016         /// Event argument passed through the ChildRemoved event.
1017         /// </summary>
1018         /// <since_tizen> 5 </since_tizen>
1019         public class ChildRemovedEventArgs : EventArgs
1020         {
1021             /// <summary>
1022             /// Removed child view at moment.
1023             /// </summary>
1024             /// <since_tizen> 5 </since_tizen>
1025             public View Removed { get; set; }
1026         }
1027
1028         /// <summary>
1029         /// Event arguments that passed via the KeyEvent signal.
1030         /// </summary>
1031         /// <since_tizen> 3 </since_tizen>
1032         public class KeyEventArgs : EventArgs
1033         {
1034             private Key _key;
1035
1036             /// <summary>
1037             /// Key - is the key sent to the view.
1038             /// </summary>
1039             /// <since_tizen> 3 </since_tizen>
1040             public Key Key
1041             {
1042                 get
1043                 {
1044                     return _key;
1045                 }
1046                 set
1047                 {
1048                     _key = value;
1049                 }
1050             }
1051         }
1052
1053         /// <summary>
1054         /// Event arguments that passed via the touch signal.
1055         /// </summary>
1056         /// <since_tizen> 3 </since_tizen>
1057         public class TouchEventArgs : EventArgs
1058         {
1059             private Touch _touch;
1060
1061             /// <summary>
1062             /// Touch - contains the information of touch points.
1063             /// </summary>
1064             /// <since_tizen> 3 </since_tizen>
1065             public Touch Touch
1066             {
1067                 get
1068                 {
1069                     return _touch;
1070                 }
1071                 set
1072                 {
1073                     _touch = value;
1074                 }
1075             }
1076         }
1077
1078         /// <summary>
1079         /// Event arguments that passed via the hover signal.
1080         /// </summary>
1081         /// <since_tizen> 3 </since_tizen>
1082         public class HoverEventArgs : EventArgs
1083         {
1084             private Hover _hover;
1085
1086             /// <summary>
1087             /// Hover - contains touch points that represent the points that are currently being hovered or the points where a hover has stopped.
1088             /// </summary>
1089             /// <since_tizen> 3 </since_tizen>
1090             public Hover Hover
1091             {
1092                 get
1093                 {
1094                     return _hover;
1095                 }
1096                 set
1097                 {
1098                     _hover = value;
1099                 }
1100             }
1101         }
1102
1103         /// <summary>
1104         /// Event arguments that passed via the wheel signal.
1105         /// </summary>
1106         /// <since_tizen> 3 </since_tizen>
1107         public class WheelEventArgs : EventArgs
1108         {
1109             private Wheel _wheel;
1110
1111             /// <summary>
1112             /// WheelEvent - store a wheel rolling type: MOUSE_WHEEL or CUSTOM_WHEEL.
1113             /// </summary>
1114             /// <since_tizen> 3 </since_tizen>
1115             public Wheel Wheel
1116             {
1117                 get
1118                 {
1119                     return _wheel;
1120                 }
1121                 set
1122                 {
1123                     _wheel = value;
1124                 }
1125             }
1126         }
1127
1128         /// <summary>
1129         /// Event arguments of visibility changed.
1130         /// </summary>
1131         /// <since_tizen> 3 </since_tizen>
1132         public class VisibilityChangedEventArgs : EventArgs
1133         {
1134             private View _view;
1135             private bool _visibility;
1136             private VisibilityChangeType _type;
1137
1138             /// <summary>
1139             /// The view, or child of view, whose visibility has changed.
1140             /// </summary>
1141             /// <since_tizen> 3 </since_tizen>
1142             public View View
1143             {
1144                 get
1145                 {
1146                     return _view;
1147                 }
1148                 set
1149                 {
1150                     _view = value;
1151                 }
1152             }
1153
1154             /// <summary>
1155             /// Whether the view is now visible or not.
1156             /// </summary>
1157             /// <since_tizen> 3 </since_tizen>
1158             public bool Visibility
1159             {
1160                 get
1161                 {
1162                     return _visibility;
1163                 }
1164                 set
1165                 {
1166                     _visibility = value;
1167                 }
1168             }
1169
1170             /// <summary>
1171             /// Whether the view's visible property has changed or a parent's.
1172             /// </summary>
1173             /// <since_tizen> 3 </since_tizen>
1174             public VisibilityChangeType Type
1175             {
1176                 get
1177                 {
1178                     return _type;
1179                 }
1180                 set
1181                 {
1182                     _type = value;
1183                 }
1184             }
1185         }
1186
1187         /// <summary>
1188         /// Event arguments of layout direction changed.
1189         /// </summary>
1190         /// <since_tizen> 4 </since_tizen>
1191         public class LayoutDirectionChangedEventArgs : EventArgs
1192         {
1193             private View _view;
1194             private ViewLayoutDirectionType _type;
1195
1196             /// <summary>
1197             /// The view, or child of view, whose layout direction has changed.
1198             /// </summary>
1199             /// <since_tizen> 4 </since_tizen>
1200             public View View
1201             {
1202                 get
1203                 {
1204                     return _view;
1205                 }
1206                 set
1207                 {
1208                     _view = value;
1209                 }
1210             }
1211
1212             /// <summary>
1213             /// Whether the view's layout direction property has changed or a parent's.
1214             /// </summary>
1215             /// <since_tizen> 4 </since_tizen>
1216             public ViewLayoutDirectionType Type
1217             {
1218                 get
1219                 {
1220                     return _type;
1221                 }
1222                 set
1223                 {
1224                     _type = value;
1225                 }
1226             }
1227         }
1228
1229         internal class BackgroundResourceLoadedEventArgs : EventArgs
1230         {
1231             private ResourceLoadingStatusType status = ResourceLoadingStatusType.Invalid;
1232             public ResourceLoadingStatusType Status
1233             {
1234                 get
1235                 {
1236                     return status;
1237                 }
1238                 set
1239                 {
1240                     status = value;
1241                 }
1242             }
1243         }
1244
1245         /// <summary>
1246         /// The class represents the information of the situation where the View's control state changes.
1247         /// </summary>
1248         [EditorBrowsable(EditorBrowsableState.Never)]
1249         public class ControlStateChangedEventArgs : EventArgs
1250         {
1251             /// <summary>
1252             /// Create an instance with mandatory fields.
1253             /// </summary>
1254             /// <param name="previousState">The previous control state.</param>
1255             /// <param name="currentState">The current control state.</param>
1256             [EditorBrowsable(EditorBrowsableState.Never)]
1257             public ControlStateChangedEventArgs(ControlState previousState, ControlState currentState)
1258             {
1259                 PreviousState = previousState;
1260                 CurrentState = currentState;
1261             }
1262
1263             /// <summary>
1264             /// The previous control state.
1265             /// </summary>
1266             [EditorBrowsable(EditorBrowsableState.Never)]
1267             public ControlState PreviousState { get; }
1268
1269             /// <summary>
1270             /// The current control state.
1271             /// </summary>
1272             [EditorBrowsable(EditorBrowsableState.Never)]
1273             public ControlState CurrentState { get; }
1274         }
1275
1276         private EventHandlerWithReturnType<object, WheelEventArgs, bool> WindowWheelEventHandler;
1277         private void OnWindowWheelEvent(object sender, Window.WheelEventArgs e)
1278         {
1279             if (e != null)
1280             {
1281                 if (e.Wheel.Type == Wheel.WheelType.CustomWheel)
1282                 {
1283                     var arg = new WheelEventArgs()
1284                     {
1285                         Wheel = e.Wheel,
1286                     };
1287                     WindowWheelEventHandler?.Invoke(this, arg);
1288                 }
1289             }
1290         }
1291
1292         /// <summary>
1293         /// The expanded touch area.
1294         /// TouchArea can expand the view's touchable area.<br/>
1295         /// If you set the TouchAreaOffset on an view, when you touch the view, the touch area is used rather than the size of the view.<br/>
1296         /// </summary>
1297         /// <remarks>
1298         /// This is based on the top left x, y coordinates.<br/>
1299         /// For example) <br/>
1300         /// <code>
1301         ///  view.Size = new Size(100, 100);
1302         ///  view.TouchAreaOffset = new Offset(-10, 20, 30, -40); // left, right, bottom, top
1303         /// </code>
1304         /// Then, touch area is 130x170.<br/>
1305         /// This is view.width + TouchAreaOffset.right - TouchAreaOffset.left and view.height + TouchAreaOffset.bottom - TouchAreaOffset.top <br/>
1306         /// +---------------------+ <br/>
1307         /// |         ^           | <br/>
1308         /// |         |           | <br/>
1309         /// |         | -40       | <br/>
1310         /// |         |           | <br/>
1311         /// |         |           | <br/>
1312         /// |    +----+----+      | <br/>
1313         /// |    |         |      | <br/>
1314         /// | -10|         | 20   | <br/>
1315         /// |&lt;---+         +-----&gt;| <br/>
1316         /// |    |         |      | <br/>
1317         /// |    |         |      | <br/>
1318         /// |    +----+----+      | <br/>
1319         /// |         |           | <br/>
1320         /// |         | 30        | <br/>
1321         /// |         |           | <br/>
1322         /// |         v           | <br/>
1323         /// +---------------------+ <br/>
1324         /// </remarks>
1325         [EditorBrowsable(EditorBrowsableState.Never)]
1326         public Offset TouchAreaOffset
1327         {
1328             get
1329             {
1330                 Interop.ActorInternal.GetTouchAreaOffset(SwigCPtr, out int left, out int right, out int bottom, out int top);
1331                 if (NDalicPINVOKE.SWIGPendingException.Pending)
1332                     throw NDalicPINVOKE.SWIGPendingException.Retrieve();
1333                 return new Offset(left, right, bottom, top);
1334             }
1335             set
1336             {
1337                 Interop.ActorInternal.SetTouchAreaOffset(SwigCPtr, value.Left, value.Right, value.Bottom, value.Top);
1338                 if (NDalicPINVOKE.SWIGPendingException.Pending)
1339                     throw NDalicPINVOKE.SWIGPendingException.Retrieve();
1340             }
1341         }
1342
1343     }
1344 }