src/Tizen.WebView/Tizen.WebView/WebView.cs

   1 /*
   2  * Copyright (c) 2017 Samsung Electronics Co., Ltd All Rights Reserved
   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 using ElmSharp;
  18 using System;
  19 using System.Collections.Generic;
  20 using System.ComponentModel;
  21 using System.Runtime.InteropServices;
  22 using System.Threading.Tasks;
  23
  24 namespace Tizen.WebView
  25 {
  26     /// <summary>
  27     /// Enumeration values used to specify search options.
  28     /// </summary>
  29     /// <since_tizen> 6 </since_tizen>
  30     [Flags]
  31     public enum FindOption
  32     {
  33         /// <summary>
  34         /// No search flags, this means a case sensitive, no wrap, forward only search.
  35         /// </summary>
  36         None = 0,
  37         /// <summary>
  38         /// Case insensitive search.
  39         /// </summary>
  40         CaseInsensitive = 1 << 0,
  41         /// <summary>
  42         /// Search text only at the beginning of the words.
  43         /// </summary>
  44         AtWordStart = 1 << 1,
  45         /// <summary>
  46         /// Treat capital letters in the middle of words as word start.
  47         /// </summary>
  48         TreatMedialCapitalAsWordStart = 1 << 2,
  49         /// <summary>
  50         /// Search backwards.
  51         /// </summary>
  52         Backwards = 1 << 3,
  53         /// <summary>
  54         /// If not present the search stops at the end of the document.
  55         /// </summary>
  56         WrapAround = 1 << 4,
  57         /// <summary>
  58         /// Show overlay.
  59         /// </summary>
  60         ShowOverlay = 1 << 5,
  61         /// <summary>
  62         /// Show Indicator.
  63         /// </summary>
  64         ShowIndicator = 1 << 6,
  65         /// <summary>
  66         /// Show Highlight.
  67         /// </summary>
  68         ShowHighlight = 1 << 7,
  69     }
  70
  71     /// <summary>
  72     /// Enumeration for Http Method.
  73     /// </summary>
  74     /// <since_tizen> 6 </since_tizen>
  75     public enum HttpMethod
  76     {
  77         /// <summary>
  78         /// Get.
  79         /// </summary>
  80         Get,
  81         /// <summary>
  82         /// Head.
  83         /// </summary>
  84         Head,
  85         /// <summary>
  86         /// Post.
  87         /// </summary>
  88         Post,
  89         /// <summary>
  90         /// Put.
  91         /// </summary>
  92         Put,
  93         /// <summary>
  94         /// Delete.
  95         /// </summary>
  96         Delete,
  97     }
  98
  99     /// <summary>
 100     /// Enumeration for Orientation of the device.
 101     /// </summary>
 102     /// <since_tizen> 6 </since_tizen>
 103     public enum Orientation
 104     {
 105         /// <summary>
 106         /// 0 degrees when the device is oriented to natural position.
 107         /// </summary>
 108         Natural = 0,
 109         /// <summary>
 110         /// -90 degrees when it's left side is at the top.
 111         /// </summary>
 112         LeftAtTop = -90,
 113         /// <summary>
 114         /// 90 degrees when it's right side is at the top.
 115         /// </summary>
 116         RightAtTop = 90,
 117         /// <summary>
 118         /// 180 degrees when it is upside down.
 119         /// </summary>
 120         UpsideDown = 180,
 121     }
 122
 123     /// <summary>
 124     /// A view used to render the web contents.
 125     /// </summary>
 126     /// <since_tizen> 4 </since_tizen>
 127     public class WebView : EvasObject
 128     {
 129         private static IDictionary<string, JavaScriptMessageHandler> _javaScriptMessageHandlerMap = new Dictionary<string, JavaScriptMessageHandler>();
 130
 131         private IntPtr _handle;
 132         private IntPtr _realHandle;
 133         private Context _context;
 134         private Settings _settings;
 135
 136         private IDictionary<IntPtr, Interop.ChromiumEwk.ScriptExcuteCallback> _evalCallbacks = new Dictionary<IntPtr, Interop.ChromiumEwk.ScriptExcuteCallback>();
 137         private int _evalCallbackId = 0;
 138
 139         // focus dummy
 140         private SmartEvent _focusIn;
 141         private SmartEvent _focusOut;
 142
 143         // Smart events
 144         private SmartEvent _loadStarted;
 145         private SmartEvent _loadFinished;
 146         private SmartEvent<SmartCallbackLoadErrorArgs> _loadError;
 147         private SmartEvent<SmartCallbackArgs> _titleChanged;
 148         private SmartEvent<SmartCallbackArgs> _urlChanged;
 149         private SmartEvent<NavigationPolicyEventArgs> _policyNavigationDecide;
 150         private SmartEvent<NewWindowPolicyEventArgs> _policyNewWindowDecide;
 151         private SmartEvent<ResponsePolicyEventArgs> _policyResponseDecide;
 152
 153         private SmartEvent<ContextMenuItemEventArgs> _contextMenuItemSelected;
 154         private SmartEvent<ContextMenuCustomizeEventArgs> _contextMenuCustomize;
 155
 156         private ContextMenuCustomize _contextMenuCustomizeDelegate;
 157
 158         /// <summary>
 159         /// Event that occurs when the load is started.
 160         /// </summary>
 161         /// <since_tizen> 4 </since_tizen>
 162         public event EventHandler LoadStarted;
 163
 164         /// <summary>
 165         /// Event that occurs when the load is finished.
 166         /// </summary>
 167         /// <since_tizen> 4 </since_tizen>
 168         public event EventHandler LoadFinished;
 169
 170         /// <summary>
 171         /// Event that occurs when the load throws an error.
 172         /// </summary>
 173         /// <since_tizen> 4 </since_tizen>
 174         public event EventHandler<SmartCallbackLoadErrorArgs> LoadError;
 175
 176         /// <summary>
 177         /// Event that occurs when the title of the main frame is changed.
 178         /// </summary>
 179         /// <since_tizen> 4 </since_tizen>
 180         public event EventHandler<SmartCallbackArgs> TitleChanged;
 181
 182         /// <summary>
 183         /// Event that occurs when the URL of the main frame is changed.
 184         /// </summary>
 185         /// <since_tizen> 4 </since_tizen>
 186         public event EventHandler<SmartCallbackArgs> UrlChanged;
 187
 188         /// <summary>
 189         /// Event that occurs when the policy navigation is decided.
 190         /// </summary>
 191         /// <since_tizen> 6 </since_tizen>
 192         public event EventHandler<NavigationPolicyEventArgs> NavigationPolicyDecideRequested;
 193
 194         /// <summary>
 195         /// Event that occurs when the policy new window is decided.
 196         /// </summary>
 197         /// <since_tizen> 6 </since_tizen>
 198         public event EventHandler<NewWindowPolicyEventArgs> NewWindowPolicyDecideRequested;
 199
 200         /// <summary>
 201         /// Event that occurs when the policy response is decided.
 202         /// </summary>
 203         /// <since_tizen> 6 </since_tizen>
 204         public event EventHandler<ResponsePolicyEventArgs> ResponsePolicyDecideRequested;
 205
 206         /// <summary>
 207         /// Event that occurs when the context menu item selected.
 208         /// </summary>
 209         /// <since_tizen> 6 </since_tizen>
 210         public event EventHandler<ContextMenuItemEventArgs> ContextMenuItemSelected;
 211
 212         /// <summary>
 213         /// The delegate is invoked when context menu customization is needed.
 214         /// </summary>
 215         /// <param name="menu">The instance of ContextMenu.</param>
 216         /// <since_tizen> 6 </since_tizen>
 217         public delegate void ContextMenuCustomize(ContextMenu menu);
 218
 219
 220         /// <summary>
 221         /// Current URL of the main frame.
 222         /// </summary>
 223         /// <since_tizen> 4 </since_tizen>
 224         public string Url
 225         {
 226             get
 227             {
 228                 return Interop.ChromiumEwk.ewk_view_url_get(_realHandle);
 229             }
 230         }
 231
 232         /// <summary>
 233         /// Current title of the main frame.
 234         /// </summary>
 235         /// <since_tizen> 4 </since_tizen>
 236         public string Title
 237         {
 238             get
 239             {
 240                 return Interop.ChromiumEwk.ewk_view_title_get(_realHandle);
 241             }
 242         }
 243
 244         /// <summary>
 245         /// Current user agent string of this view.
 246         /// </summary>
 247         /// <since_tizen> 4 </since_tizen>
 248         public string UserAgent
 249         {
 250             get
 251             {
 252                 return Interop.ChromiumEwk.ewk_view_user_agent_get(_realHandle);
 253             }
 254
 255             set
 256             {
 257                 Interop.ChromiumEwk.ewk_view_user_agent_set(_realHandle, value);
 258             }
 259         }
 260
 261         /// <summary>
 262         /// Whether a view has the focus.
 263         /// </summary>
 264         /// <since_tizen> 4 </since_tizen>
 265         public bool HasFocus
 266         {
 267             get
 268             {
 269                 return Interop.ChromiumEwk.ewk_view_focus_get(_realHandle);
 270             }
 271         }
 272
 273         /// <summary>
 274         /// Creates a WebView object.
 275         /// </summary>
 276         /// <param name="parent">Parent object of the WebView.</param>
 277         /// <since_tizen> 4 </since_tizen>
 278         public WebView(EvasObject parent) : base(parent)
 279         {
 280             InitializeSmartEvent();
 281         }
 282
 283         /// <summary>
 284         /// Gets the context object of this view.
 285         /// </summary>
 286         /// <returns>The context object of this view.</returns>
 287         /// <since_tizen> 4 </since_tizen>
 288         public Context GetContext()
 289         {
 290             if (_context == null)
 291             {
 292                 IntPtr contextHandle = Interop.ChromiumEwk.ewk_view_context_get(_realHandle);
 293                 if (contextHandle == IntPtr.Zero)
 294                 {
 295                     return null;
 296                 }
 297                 _context = new Context(contextHandle);
 298             }
 299             return _context;
 300         }
 301
 302         /// <summary>
 303         /// Gets the settings object of this view.
 304         /// </summary>
 305         /// <returns>The settings object of this view.</returns>
 306         /// <since_tizen> 4 </since_tizen>
 307         public Settings GetSettings()
 308         {
 309             if (_settings == null)
 310             {
 311                 IntPtr settingsHandle = Interop.ChromiumEwk.ewk_view_settings_get(_realHandle);
 312                 if (settingsHandle == IntPtr.Zero)
 313                 {
 314                     return null;
 315                 }
 316                 _settings = new Settings(settingsHandle);
 317             }
 318             return _settings;
 319         }
 320
 321         /// <summary>
 322         /// Gets the back/forward list object of this view.
 323         /// </summary>
 324         /// <returns>The BackForward List object of this view.</returns>
 325         /// <since_tizen> 6 </since_tizen>
 326         public BackForwardList GetBackForwardList()
 327         {
 328             IntPtr backforwardlistHandle = Interop.ChromiumEwk.ewk_view_back_forward_list_get(_realHandle);
 329             if (backforwardlistHandle == IntPtr.Zero)
 330             {
 331                 return null;
 332             }
 333             return new BackForwardList(backforwardlistHandle);
 334         }
 335
 336         /// <summary>
 337         /// Clear the back/forward list object of this view.
 338         /// </summary>
 339         /// <since_tizen> 6 </since_tizen>
 340         public void ClearBackForwardList()
 341         {
 342             Interop.ChromiumEwk.ewk_view_back_forward_list_clear(_realHandle);
 343         }
 344
 345         /// <summary>
 346         /// Asks the object to load the given URL.
 347         /// </summary>
 348         /// <remarks>
 349         /// You can only be sure that the URL changes after UrlChanged event.
 350         /// </remarks>
 351         /// <param name="url">The uniform resource identifier to load.</param>
 352         /// <since_tizen> 4 </since_tizen>
 353         public void LoadUrl(string url)
 354         {
 355             Interop.ChromiumEwk.ewk_view_url_set(_realHandle, url);
 356         }
 357
 358         /// <summary>
 359         /// Loads the specified HTML string as the content of the view.
 360         /// </summary>
 361         /// <param name="html">HTML data to load.</param>
 362         /// <param name="baseUrl">Base URL used for relative paths to external objects.</param>
 363         /// <since_tizen> 4 </since_tizen>
 364         public void LoadHtml(string html, string baseUrl)
 365         {
 366             Interop.ChromiumEwk.ewk_view_html_string_load(_realHandle, html, baseUrl, null);
 367         }
 368
 369         /// <summary>
 370         /// Asks the main frame to stop loading.
 371         /// </summary>
 372         /// <since_tizen> 4 </since_tizen>
 373         public void StopLoading()
 374         {
 375             Interop.ChromiumEwk.ewk_view_stop(_realHandle);
 376         }
 377
 378         /// <summary>
 379         /// Asks the main frame to reload the current document.
 380         /// </summary>
 381         /// <since_tizen> 4 </since_tizen>
 382         public void Reload()
 383         {
 384             Interop.ChromiumEwk.ewk_view_reload(_realHandle);
 385         }
 386
 387         /// <summary>
 388         /// Asks the main frame to navigate back in history.
 389         /// </summary>
 390         /// <since_tizen> 4 </since_tizen>
 391         public void GoBack()
 392         {
 393             Interop.ChromiumEwk.ewk_view_back(_realHandle);
 394         }
 395
 396         /// <summary>
 397         /// Asks the main frame to navigate forward in history.
 398         /// </summary>
 399         /// <since_tizen> 4 </since_tizen>
 400         public void GoForward()
 401         {
 402             Interop.ChromiumEwk.ewk_view_forward(_realHandle);
 403         }
 404
 405         /// <summary>
 406         /// Checks whether it is possible to navigate backward one item in history.
 407         /// </summary>
 408         /// <returns>Whether it is possible to navigate backward one item in history.</returns>
 409         /// <since_tizen> 4 </since_tizen>
 410         public bool CanGoBack()
 411         {
 412             return Interop.ChromiumEwk.ewk_view_back_possible(_realHandle);
 413         }
 414
 415         /// <summary>
 416         /// Checks whether it is possible to navigate forward one item in history.
 417         /// </summary>
 418         /// <returns>Whether it is possible to navigate forward one item in history.</returns>
 419         /// <since_tizen> 4 </since_tizen>
 420         public bool CanGoForward()
 421         {
 422             return Interop.ChromiumEwk.ewk_view_forward_possible(_realHandle);
 423         }
 424
 425         /// <summary>
 426         /// Injects the supplied javascript message handler into the view.
 427         /// </summary>
 428         /// <param name="name"> The message callback.</param>
 429         /// <param name="handler">The name used to expose the object in JavaScript.</param>
 430         /// <returns>'true' on success, otherwise 'false'.</returns>
 431         /// <since_tizen> 4 </since_tizen>
 432         public bool AddJavaScriptMessageHandler(string name, JavaScriptMessageHandler handler)
 433         {
 434             lock (_javaScriptMessageHandlerMap)
 435             {
 436                 if (_javaScriptMessageHandlerMap.ContainsKey(name))
 437                 {
 438                     return false;
 439                 }
 440                 _javaScriptMessageHandlerMap[name] = handler;
 441             }
 442             Interop.ChromiumEwk.ScriptMessageCallback callback = (handle, message) =>
 443             {
 444                 JavaScriptMessage convertedMessage = new JavaScriptMessage(message);
 445                 lock (_javaScriptMessageHandlerMap)
 446                 {
 447                     if (_javaScriptMessageHandlerMap.ContainsKey(convertedMessage.Name))
 448                     {
 449                         _javaScriptMessageHandlerMap[convertedMessage.Name](convertedMessage);
 450                     }
 451                 }
 452             };
 453             if (!Interop.ChromiumEwk.ewk_view_javascript_message_handler_add(_realHandle, callback, name))
 454             {
 455                 lock (_javaScriptMessageHandlerMap)
 456                 {
 457                     _javaScriptMessageHandlerMap.Remove(name);
 458                     return false;
 459                 }
 460             }
 461             return true;
 462         }
 463
 464         /// <summary>
 465         /// Requests the execution of a given name and the result to the JavaScript runtime.
 466         /// </summary>
 467         /// <param name="name">The name used to expose the object in JavaScript.</param>
 468         /// <param name="result">The result to the JavaScript runtime.</param>
 469         /// <since_tizen> 4 </since_tizen>
 470         public void EvalWithResult(string name, string result)
 471         {
 472             Interop.ChromiumEwk.ewk_view_evaluate_javascript(_realHandle, name, result);
 473         }
 474
 475         /// <summary>
 476         /// Requests the execution of the given script.
 477         /// </summary>
 478         /// <param name="script">The JavaScript code string to execute.</param>
 479         /// <since_tizen> 4 </since_tizen>
 480         public void Eval(string script)
 481         {
 482             Interop.ChromiumEwk.ewk_view_script_execute(_realHandle, script, null, IntPtr.Zero);
 483         }
 484
 485         /// <summary>
 486         /// Requests the evaluation of the given script.
 487         /// </summary>
 488         /// <param name="script">The JavaScript code string to evaluate.</param>
 489         /// <returns>A task that contains the result of the evaluation as a string.</returns>
 490         /// <since_tizen> 8 </since_tizen>
 491         /// <exception cref="ArgumentException">Thrown when a script is null or empty string.</exception>
 492         public async Task<string> EvalAsync(string script)
 493         {
 494             if (string.IsNullOrEmpty(script))
 495             {
 496                 throw new ArgumentException(nameof(script));
 497             }
 498
 499             var tcs = new TaskCompletionSource<string>();
 500             IntPtr id = IntPtr.Zero;
 501
 502             lock (_evalCallbacks)
 503             {
 504                 id = (IntPtr)_evalCallbackId++;
 505                 _evalCallbacks[id] = (obj, returnValue, userData) =>
 506                 {
 507                     tcs.SetResult(Marshal.PtrToStringAnsi(returnValue));
 508                     lock (_evalCallbacks)
 509                     {
 510                         _evalCallbacks.Remove(userData);
 511                     }
 512                 };
 513             }
 514
 515             Interop.ChromiumEwk.ewk_view_script_execute(_realHandle, script, _evalCallbacks[id], id);
 516             return await tcs.Task;
 517         }
 518
 519         /// <summary>
 520         /// Requests to set or unset a view as the currently focused one.
 521         /// </summary>
 522         /// <param name="focused">'true' to set the focus on the view, 'false' to remove the focus from the view.</param>
 523         /// <since_tizen> 4 </since_tizen>
 524         public void SetFocus(bool focused)
 525         {
 526             Interop.ChromiumEwk.ewk_view_focus_set(_realHandle, focused);
 527         }
 528
 529         /// <summary>
 530         /// Gets size of the content.
 531         /// </summary>
 532         /// <returns> size of the coordinate.</returns>
 533         /// <since_tizen> 6 </since_tizen>
 534         public Size ContentsSize
 535         {
 536             get
 537             {
 538                 int width, height;
 539                 Interop.ChromiumEwk.ewk_view_contents_size_get(_realHandle, out width, out height);
 540                 return new Size(width, height);
 541             }
 542         }
 543
 544         /// <summary>
 545         /// Exit full screen.
 546         /// </summary>
 547         /// <since_tizen> 6 </since_tizen>
 548         public void ExitFullscreen ()
 549         {
 550             Interop.ChromiumEwk.ewk_view_fullscreen_exit(_realHandle);
 551         }
 552
 553         /// <summary>
 554         /// Gets the current load progress of the page.
 555         /// </summary>
 556         /// <returns>'value 0.0 to 1.0' on success, otherwise '-1.0'.</returns>
 557         /// <since_tizen> 6 </since_tizen>
 558         public double LoadProgress
 559         {
 560             get
 561             {
 562                 return Interop.ChromiumEwk.ewk_view_load_progress_get(_realHandle);
 563             }
 564         }
 565
 566         /// <summary>
 567         /// Sends the orientation of the device.
 568         /// </summary>
 569         /// <param name="orientation">The new orientation of the device in degree.</param>
 570         /// <since_tizen> 6 </since_tizen>
 571         public void SendOrientation (Orientation orientation)
 572         {
 573             Interop.ChromiumEwk.ewk_view_orientation_send(_realHandle, orientation);
 574         }
 575
 576         /// <summary>
 577         /// Suspends the operation associated with the view.
 578         /// </summary>
 579         /// <since_tizen> 6 </since_tizen>
 580         public void Suspend ()
 581         {
 582             Interop.ChromiumEwk.ewk_view_suspend(_realHandle);
 583         }
 584
 585         /// <summary>
 586         /// Resumes the operation associated with the view.
 587         /// </summary>
 588         /// <since_tizen> 6 </since_tizen>
 589         public void Resume ()
 590         {
 591             Interop.ChromiumEwk.ewk_view_resume(_realHandle);
 592         }
 593
 594         /// <summary>
 595         /// Gets the current scale factor of the page.
 596         /// </summary>
 597         /// <since_tizen> 6 </since_tizen>
 598         public double Scale
 599         {
 600             get
 601             {
 602                 return Interop.ChromiumEwk.ewk_view_scale_get(_realHandle);
 603             }
 604         }
 605
 606         /// <summary>
 607         /// Sets the current scale factor of the page.
 608         /// </summary>
 609         /// <param name="scaleFactor">A new level to set.</param>
 610         /// <param name="scrollTo">The class Point object with X, Y coordinates.</param>
 611         /// <since_tizen> 6 </since_tizen>
 612         public void SetScale (double scaleFactor, Point scrollTo)
 613         {
 614             Interop.ChromiumEwk.ewk_view_scale_set(_realHandle, scaleFactor, scrollTo.X, scrollTo.Y);
 615         }
 616
 617         /// <summary>
 618         /// Sets the current page's visibility.
 619         /// </summary>
 620         /// <param name="enable">'true' to set on the visibility of the page, 'false' otherwise.</param>
 621         /// <since_tizen> 6 </since_tizen>
 622         public void SetViewVisibility (bool enable)
 623         {
 624             Interop.ChromiumEwk.ewk_view_visibility_set(_realHandle, enable);
 625         }
 626
 627         /// <summary>
 628         /// Get and Sets the scroll position of the page.
 629         /// </summary>
 630         /// <returns>The class Point object with X, Y coordinates.</returns>
 631         /// <since_tizen> 6 </since_tizen>
 632         public Point ScrollPosition
 633         {
 634             get
 635             {
 636                 Point p;
 637                 Interop.ChromiumEwk.ewk_view_scroll_pos_get(_realHandle, out p.X, out p.Y);
 638                 return p;
 639             }
 640             set
 641             {
 642                 Interop.ChromiumEwk.ewk_view_scroll_set(_realHandle, value.X, value.Y);
 643             }
 644         }
 645
 646         /// <summary>
 647         /// Scrolls the webpage by the given amount.
 648         /// </summary>
 649         /// <param name="delta">The class Point object with X, Y coordinates.</param>
 650         /// <since_tizen> 6 </since_tizen>
 651         public void ScrollBy (Point delta)
 652         {
 653             Interop.ChromiumEwk.ewk_view_scroll_by(_realHandle, delta.X, delta.Y);
 654         }
 655
 656         /// <summary>
 657         /// Searches and highlights the given text string in the document.
 658         /// </summary>
 659         /// <param name="text">The text to find.</param>
 660         /// <param name="option">The options to find.</param>
 661         /// <param name="maxMatchCount">The maximum match count to find, unlimited if 0.</param>
 662         /// <since_tizen> 6 </since_tizen>
 663         public void FindText (string text, FindOption option, int maxMatchCount)
 664         {
 665             Interop.ChromiumEwk.ewk_view_text_find(_realHandle, text, option, maxMatchCount);
 666         }
 667
 668         /// <summary>
 669         /// Requests loading of the given request data.
 670         /// </summary>
 671         /// <param name="url">The uniform resource identifier to load.</param>
 672         /// <param name="httpMethod">The http method.</param>
 673         /// <param name="httpHeaders">The http headers.</param>
 674         /// <param name="httpBody">The http body data.</param>
 675         /// <since_tizen> 6 </since_tizen>
 676         public void SetUrlRequest (string url, HttpMethod httpMethod, IDictionary<string, string> httpHeaders, string httpBody)
 677         {
 678             List<IntPtr> stringHandles = new List<IntPtr>();
 679             IntPtr hashHttpHeaders = Interop.Eina.eina_hash_string_small_new(IntPtr.Zero);
 680
 681             foreach (KeyValuePair<string, string> entry in httpHeaders)
 682             {
 683                 IntPtr keyHandle = Marshal.StringToHGlobalAnsi(entry.Key);
 684                 IntPtr valueHandle = Marshal.StringToHGlobalAnsi(entry.Value);
 685                 Interop.Eina.eina_hash_add(hashHttpHeaders, keyHandle, valueHandle);
 686                 stringHandles.Add(keyHandle);
 687                 stringHandles.Add(valueHandle);
 688              }
 689              Interop.ChromiumEwk.ewk_view_url_request_set(_realHandle, url, httpMethod, hashHttpHeaders, httpBody);
 690
 691              foreach(IntPtr handle in stringHandles)
 692              {
 693                  Marshal.FreeHGlobal(handle);
 694              }
 695         }
 696
 697         /// <summary>
 698         /// Creates a widget handle.
 699         /// </summary>
 700         /// <param name="parent">Parent EvasObject.</param>
 701         /// <returns>IntPtr of the widget handle.</returns>
 702         /// <since_tizen> 4 </since_tizen>
 703         protected override IntPtr CreateHandle(EvasObject parent)
 704         {
 705             // focus dummy
 706             _handle = Interop.Elementary.elm_layout_add((IntPtr)parent);
 707             Interop.Elementary.elm_layout_theme_set(_handle, "layout", "elm_widget", "default");
 708             Interop.Elementary.elm_object_focus_allow_set(_handle, true);
 709
 710             IntPtr evas = Interop.Evas.evas_object_evas_get(parent);
 711             _realHandle = Interop.ChromiumEwk.ewk_view_add(evas);
 712             Interop.Elementary.elm_object_part_content_set(_handle, "elm.swallow.content", _realHandle);
 713
 714             return _handle;
 715         }
 716
 717         /// <summary>
 718         /// Sets the delegate for context menu customization.
 719         /// </summary>
 720         /// <param name="contextMenuCustomizeDelegate">The delegate for context menu customization.</param>
 721         /// <since_tizen> 6 </since_tizen>
 722         public void SetContextMenuCustomizeDelegate(ContextMenuCustomize contextMenuCustomizeDelegate)
 723         {
 724             _contextMenuCustomizeDelegate = contextMenuCustomizeDelegate;
 725         }
 726
 727         private void InitializeSmartEvent()
 728         {
 729             // focus dummy
 730             _focusIn = new SmartEvent(this, "focused");
 731             _focusOut = new SmartEvent(this, "unfocused");
 732
 733             _focusIn.On += (s, e) => { ((WebView)s).SetFocus(true); };
 734             _focusOut.On += (s, e) => { ((WebView)s).SetFocus(false); };
 735
 736             _loadStarted = new SmartEvent(this, _realHandle, "load,started");
 737             _loadFinished = new SmartEvent(this, _realHandle, "load,finished");
 738             _loadError = new SmartEvent<SmartCallbackLoadErrorArgs>(this, _realHandle, "load,error", SmartCallbackLoadErrorArgs.CreateFromSmartEvent);
 739             _titleChanged = new SmartEvent<SmartCallbackArgs>(this, _realHandle, "title,changed", SmartCallbackArgs.CreateFromSmartEvent);
 740             _urlChanged = new SmartEvent<SmartCallbackArgs>(this, _realHandle, "url,changed", SmartCallbackArgs.CreateFromSmartEvent);
 741             _contextMenuCustomize = new SmartEvent<ContextMenuCustomizeEventArgs>(this, _realHandle, "contextmenu,customize", ContextMenuCustomizeEventArgs.CreateFromSmartEvent);
 742             _contextMenuItemSelected = new SmartEvent<ContextMenuItemEventArgs>(this, _realHandle, "contextmenu,selected", ContextMenuItemEventArgs.CreateFromSmartEvent);
 743             _policyNavigationDecide = new SmartEvent<NavigationPolicyEventArgs>(this, _realHandle, "policy,navigation,decide", NavigationPolicyEventArgs.CreateFromSmartEvent);
 744             _policyNewWindowDecide = new SmartEvent<NewWindowPolicyEventArgs>(this, _realHandle, "policy,newwindow,decide", NewWindowPolicyEventArgs.CreateFromSmartEvent);
 745             _policyResponseDecide = new SmartEvent<ResponsePolicyEventArgs>(this, _realHandle, "policy,response,decide", ResponsePolicyEventArgs.CreateFromSmartEvent);
 746
 747             _loadStarted.On += (s, e) => { LoadStarted?.Invoke(this, EventArgs.Empty); };
 748             _loadFinished.On += (s, e) => { LoadFinished?.Invoke(this, EventArgs.Empty); };
 749             _loadError.On += (s, e) => { LoadError?.Invoke(this, e); };
 750             _titleChanged.On += (s, e) => { TitleChanged?.Invoke(this, e); };
 751             _urlChanged.On += (s, e) => { UrlChanged?.Invoke(this, e); };
 752             _policyNavigationDecide.On += (s, e) => { NavigationPolicyDecideRequested?.Invoke(this, e); };
 753             _policyNewWindowDecide.On += (s, e) => { NewWindowPolicyDecideRequested?.Invoke(this, e); };
 754             _policyResponseDecide.On += (s, e) => { ResponsePolicyDecideRequested?.Invoke(this, e); };
 755             _contextMenuItemSelected.On += (s, e) => { ContextMenuItemSelected?.Invoke(this, e); };
 756             _contextMenuCustomize.On += (s, e) => { _contextMenuCustomizeDelegate?.Invoke(e.Menu); };
 757         }
 758
 759     }
 760 }