src/Tizen.NUI.CommonUI/Controls/DropDown.cs

   1 /*
   2  * Copyright(c) 2019 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 using System;
  18 using System.Collections.Generic;
  19 using Tizen.NUI.BaseComponents;
  20 using System.ComponentModel;
  21
  22 namespace Tizen.NUI.CommonUI
  23 {
  24     /// <summary>
  25     /// DropDown is one kind of common component, a dropdown allows the user click dropdown button to choose one value from a list.
  26     /// </summary>
  27     /// <since_tizen> 6 </since_tizen>
  28     /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
  29     [EditorBrowsable(EditorBrowsableState.Never)]
  30     public class DropDown : Control
  31     {
  32         #region DropDown
  33         private Button button = null;
  34         private TextLabel headerText = null;
  35         private TextLabel buttonText = null;
  36         private ImageView listBackgroundImage = null;
  37         private FlexibleView list = null;
  38         private DropDownListBridge adapter = new DropDownListBridge();
  39         private DropDownAttributes dropDownAttributes = null;
  40         private DropDownItemView touchedView = null;
  41         private int selectedItemIndex = -1;
  42
  43         /// <summary>
  44         /// Creates a new instance of a DropDown.
  45         /// </summary>
  46         /// <since_tizen> 6 </since_tizen>
  47         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
  48         [EditorBrowsable(EditorBrowsableState.Never)]
  49         public DropDown() : base()
  50         {
  51             Initialize();
  52         }
  53         /// <summary>
  54         /// Creates a new instance of a DropDown with style.
  55         /// </summary>
  56         /// <param name="style">Create DropDown by special style defined in UX.</param>
  57         /// <since_tizen> 6 </since_tizen>
  58         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
  59         [EditorBrowsable(EditorBrowsableState.Never)]
  60         public DropDown(string style) : base(style)
  61         {
  62             Initialize();
  63         }
  64         /// <summary>
  65         /// Creates a new instance of a DropDown with attributes.
  66         /// </summary>
  67         /// <param name="attributes">Create DropDown by attributes customized by user.</param>
  68         /// <since_tizen> 6 </since_tizen>
  69         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
  70         [EditorBrowsable(EditorBrowsableState.Never)]
  71         public DropDown(DropDownAttributes attributes) : base(attributes)
  72         {
  73             Initialize();
  74         }
  75
  76         /// <summary>
  77         /// An event for the button clicked signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
  78         /// </summary>
  79         /// <since_tizen> 6 </since_tizen>
  80         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
  81         [EditorBrowsable(EditorBrowsableState.Never)]
  82         public delegate void ClickEventHandler<ClickEventArgs>(object sender, ClickEventArgs e);
  83
  84         /// <summary>
  85         /// An event for the item clicked signal which can be used to subscribe or unsubscribe the event handler provided by the user.<br />
  86         /// </summary>
  87         /// <since_tizen> 6 </since_tizen>
  88         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
  89         [EditorBrowsable(EditorBrowsableState.Never)]
  90         public event ClickEventHandler<ItemClickEventArgs> ItemClickEvent;
  91
  92         /// <summary>
  93         /// List orientation.
  94         /// </summary>
  95         /// <since_tizen> 6 </since_tizen>
  96         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
  97         [EditorBrowsable(EditorBrowsableState.Never)]
  98         public enum ListOrientation
  99         {
 100             /// <summary>
 101             /// Left.
 102             /// </summary>
 103             /// <since_tizen> 6 </since_tizen>
 104             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 105             [EditorBrowsable(EditorBrowsableState.Never)]
 106             Left,
 107             /// <summary>
 108             /// Right.
 109             /// </summary>
 110             /// <since_tizen> 6 </since_tizen>
 111             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 112             [EditorBrowsable(EditorBrowsableState.Never)]
 113             Right,
 114         }
 115
 116         /// <summary>
 117         /// Header text string in DropDown.
 118         /// </summary>
 119         /// <since_tizen> 6 </since_tizen>
 120         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 121         [EditorBrowsable(EditorBrowsableState.Never)]
 122         public string HeaderText
 123         {
 124             get
 125             {
 126                 return dropDownAttributes.HeaderTextAttributes?.Text.All;
 127             }
 128             set
 129             {
 130                 if (value != null)
 131                 {
 132                     CreateHeaderTextAttributes();
 133                     if (dropDownAttributes.HeaderTextAttributes.Text == null)
 134                     {
 135                         dropDownAttributes.HeaderTextAttributes.Text = new StringSelector();
 136                     }
 137                     dropDownAttributes.HeaderTextAttributes.Text.All = value;
 138                     RelayoutRequest();
 139                 }
 140             }
 141         }
 142
 143         /// <summary>
 144         /// Header text point size in DropDown.
 145         /// </summary>
 146         /// <since_tizen> 6 </since_tizen>
 147         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 148         [EditorBrowsable(EditorBrowsableState.Never)]
 149         public float HeaderTextPointSize
 150         {
 151             get
 152             {
 153                 return dropDownAttributes.HeaderTextAttributes?.PointSize?.All ?? 0;
 154             }
 155             set
 156             {
 157                 CreateHeaderTextAttributes();
 158                 if (dropDownAttributes.HeaderTextAttributes.PointSize == null)
 159                 {
 160                     dropDownAttributes.HeaderTextAttributes.PointSize = new FloatSelector();
 161                 }
 162                 dropDownAttributes.HeaderTextAttributes.PointSize.All = value;
 163                 RelayoutRequest();
 164             }
 165         }
 166
 167         /// <summary>
 168         /// Header text font family in DropDown.
 169         /// </summary>
 170         /// <since_tizen> 6 </since_tizen>
 171         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 172         [EditorBrowsable(EditorBrowsableState.Never)]
 173         public string HeaderTextFontFamily
 174         {
 175             get
 176             {
 177                 return dropDownAttributes.HeaderTextAttributes?.FontFamily;
 178             }
 179             set
 180             {
 181                 CreateHeaderTextAttributes();
 182                 dropDownAttributes.HeaderTextAttributes.FontFamily = value;
 183                 RelayoutRequest();
 184             }
 185         }
 186
 187         /// <summary>
 188         /// Header text color in DropDown.
 189         /// </summary>
 190         /// <since_tizen> 6 </since_tizen>
 191         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 192         [EditorBrowsable(EditorBrowsableState.Never)]
 193         public Color HeaderTextColor
 194         {
 195             get
 196             {
 197                 return dropDownAttributes.HeaderTextAttributes?.TextColor?.All;
 198             }
 199             set
 200             {
 201                 CreateHeaderTextAttributes();
 202                 if (dropDownAttributes.HeaderTextAttributes.TextColor == null)
 203                 {
 204                     dropDownAttributes.HeaderTextAttributes.TextColor = new ColorSelector();
 205                 }
 206                 dropDownAttributes.HeaderTextAttributes.TextColor.All = value;
 207                 RelayoutRequest();
 208             }
 209         }
 210
 211         /// <summary>
 212         /// Header text color selector in DropDown.
 213         /// </summary>
 214         /// <since_tizen> 6 </since_tizen>
 215         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 216         [EditorBrowsable(EditorBrowsableState.Never)]
 217         public ColorSelector HeaderTextColorSelector
 218         {
 219             get
 220             {
 221                 return dropDownAttributes.HeaderTextAttributes?.TextColor;
 222             }
 223             set
 224             {
 225                 CreateHeaderTextAttributes();
 226                 if (value != null)
 227                 {
 228                     dropDownAttributes.HeaderTextAttributes.TextColor = value.Clone() as ColorSelector;
 229                     RelayoutRequest();
 230                 }
 231             }
 232         }
 233
 234         /// <summary>
 235         /// Button text string in DropDown.
 236         /// </summary>
 237         /// <since_tizen> 6 </since_tizen>
 238         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 239         [EditorBrowsable(EditorBrowsableState.Never)]
 240         public string ButtonText
 241         {
 242             get
 243             {
 244                 return dropDownAttributes.ButtonAttributes?.TextAttributes?.Text.All;
 245             }
 246             set
 247             {
 248                 if (value != null)
 249                 {
 250                     CreateButtonTextAttributes();
 251                     if (dropDownAttributes.ButtonAttributes.TextAttributes.Text == null)
 252                     {
 253                         dropDownAttributes.ButtonAttributes.TextAttributes.Text = new StringSelector();
 254                     }
 255                     dropDownAttributes.ButtonAttributes.TextAttributes.Text.All = value;
 256                     RelayoutRequest();
 257                 }
 258             }
 259         }
 260
 261         /// <summary>
 262         /// Button text point size in DropDown.
 263         /// </summary>
 264         /// <since_tizen> 6 </since_tizen>
 265         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 266         [EditorBrowsable(EditorBrowsableState.Never)]
 267         public float ButtonTextPointSize
 268         {
 269             get
 270             {
 271                 return dropDownAttributes.ButtonAttributes?.TextAttributes?.PointSize?.All ?? 0;
 272             }
 273             set
 274             {
 275                 CreateButtonTextAttributes();
 276                 if (dropDownAttributes.ButtonAttributes.TextAttributes.PointSize == null)
 277                 {
 278                     dropDownAttributes.ButtonAttributes.TextAttributes.PointSize = new FloatSelector();
 279                 }
 280                 dropDownAttributes.ButtonAttributes.TextAttributes.PointSize.All = value;
 281                 RelayoutRequest();
 282             }
 283         }
 284
 285         /// <summary>
 286         /// Button text font family in DropDown.
 287         /// </summary>
 288         /// <since_tizen> 6 </since_tizen>
 289         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 290         [EditorBrowsable(EditorBrowsableState.Never)]
 291         public string ButtonTextFontFamily
 292         {
 293             get
 294             {
 295                 return dropDownAttributes.ButtonAttributes?.TextAttributes?.FontFamily;
 296             }
 297             set
 298             {
 299                 CreateButtonTextAttributes();
 300                 dropDownAttributes.ButtonAttributes.TextAttributes.FontFamily = value;
 301                 RelayoutRequest();
 302             }
 303         }
 304
 305         /// <summary>
 306         /// Button text color in DropDown.
 307         /// </summary>
 308         /// <since_tizen> 6 </since_tizen>
 309         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 310         [EditorBrowsable(EditorBrowsableState.Never)]
 311         public Color ButtonTextColor
 312         {
 313             get
 314             {
 315                 return dropDownAttributes.ButtonAttributes?.TextAttributes?.TextColor?.All;
 316             }
 317             set
 318             {
 319                 CreateButtonTextAttributes();
 320                 if (dropDownAttributes.ButtonAttributes.TextAttributes.TextColor == null)
 321                 {
 322                     dropDownAttributes.ButtonAttributes.TextAttributes.TextColor = new ColorSelector();
 323                 }
 324                 dropDownAttributes.ButtonAttributes.TextAttributes.TextColor.All = value;
 325                 RelayoutRequest();
 326             }
 327         }
 328
 329         /// <summary>
 330         /// Button text color selector in DropDown.
 331         /// </summary>
 332         /// <since_tizen> 6 </since_tizen>
 333         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 334         [EditorBrowsable(EditorBrowsableState.Never)]
 335         public ColorSelector ButtonTextColorSelector
 336         {
 337             get
 338             {
 339                 return dropDownAttributes.ButtonAttributes?.TextAttributes?.TextColor;
 340             }
 341             set
 342             {
 343                 CreateButtonTextAttributes();
 344                 if (value != null)
 345                 {
 346                     dropDownAttributes.ButtonAttributes.TextAttributes.TextColor = value.Clone() as ColorSelector;
 347                     RelayoutRequest();
 348                 }
 349             }
 350         }
 351
 352         /// <summary>
 353         /// Button icon image's resource url in DropDown.
 354         /// </summary>
 355         /// <since_tizen> 6 </since_tizen>
 356         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 357         [EditorBrowsable(EditorBrowsableState.Never)]
 358         public string ButtonIconImageURL
 359         {
 360             get
 361             {
 362                 return dropDownAttributes.ButtonAttributes?.IconAttributes?.ResourceURL.All;
 363             }
 364             set
 365             {
 366                 if (value != null)
 367                 {
 368                     CreateButtonIconAttributes();
 369                     if (dropDownAttributes.ButtonAttributes.IconAttributes.ResourceURL == null)
 370                     {
 371                         dropDownAttributes.ButtonAttributes.IconAttributes.ResourceURL = new StringSelector();
 372                     }
 373                     dropDownAttributes.ButtonAttributes.IconAttributes.ResourceURL.All = value;
 374                     RelayoutRequest();
 375                 }
 376             }
 377         }
 378
 379         /// <summary>
 380         /// Button icon image's size in DropDown.
 381         /// </summary>
 382         /// <since_tizen> 6 </since_tizen>
 383         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 384         [EditorBrowsable(EditorBrowsableState.Never)]
 385         public Size2D ButtonIconSize2D
 386         {
 387             get
 388             {
 389                 return dropDownAttributes.ButtonAttributes?.IconAttributes?.Size2D;
 390             }
 391             set
 392             {
 393                 if (value != null)
 394                 {
 395                     CreateButtonIconAttributes();
 396                     dropDownAttributes.ButtonAttributes.IconAttributes.Size2D = value;
 397                     RelayoutRequest();
 398                 }
 399             }
 400         }
 401
 402         /// <summary>
 403         /// Space between button text and button icon in DropDown.
 404         /// </summary>
 405         /// <since_tizen> 6 </since_tizen>
 406         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 407         [EditorBrowsable(EditorBrowsableState.Never)]
 408         public int SpaceBetweenButtonTextAndIcon
 409         {
 410             get
 411             {
 412                 return dropDownAttributes.SpaceBetweenButtonTextAndIcon;
 413             }
 414             set
 415             {
 416                 dropDownAttributes.SpaceBetweenButtonTextAndIcon = value;
 417                 RelayoutRequest();
 418             }
 419         }
 420
 421         /// <summary>
 422         /// Left space in DropDown.
 423         /// </summary>
 424         /// <since_tizen> 6 </since_tizen>
 425         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 426         [EditorBrowsable(EditorBrowsableState.Never)]
 427         public int LeftSpace
 428         {
 429             get
 430             {
 431                 return (int)dropDownAttributes.Space.X;
 432             }
 433             set
 434             {
 435                 dropDownAttributes.Space.X = value;
 436                 RelayoutRequest();
 437             }
 438         }
 439
 440         /// <summary>
 441         /// Right space in DropDown.
 442         /// </summary>
 443         /// <since_tizen> 6 </since_tizen>
 444         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 445         [EditorBrowsable(EditorBrowsableState.Never)]
 446         public int RightSpace
 447         {
 448             get
 449             {
 450                 return (int)dropDownAttributes.Space.Y;
 451             }
 452             set
 453             {
 454                 dropDownAttributes.Space.Y = value;
 455                 RelayoutRequest();
 456             }
 457         }
 458
 459         /// <summary>
 460         /// List background image's resource url in DropDown.
 461         /// </summary>
 462         /// <since_tizen> 6 </since_tizen>
 463         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 464         [EditorBrowsable(EditorBrowsableState.Never)]
 465         public string ListBackgroundImageURL
 466         {
 467             get
 468             {
 469                 return dropDownAttributes.ListBackgroundImageAttributes?.ResourceURL?.All;
 470             }
 471             set
 472             {
 473                 if (value != null)
 474                 {
 475                     CreateListBackgroundAttributes();
 476                     if (dropDownAttributes.ListBackgroundImageAttributes.ResourceURL == null)
 477                     {
 478                         dropDownAttributes.ListBackgroundImageAttributes.ResourceURL = new StringSelector();
 479                     }
 480                     dropDownAttributes.ListBackgroundImageAttributes.ResourceURL.All = value;
 481                     RelayoutRequest();
 482                 }
 483             }
 484         }
 485
 486         /// <summary>
 487         /// List background image's border in DropDown.
 488         /// </summary>
 489         /// <since_tizen> 6 </since_tizen>
 490         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 491         [EditorBrowsable(EditorBrowsableState.Never)]
 492         public Rectangle ListBackgroundImageBorder
 493         {
 494             get
 495             {
 496                 return dropDownAttributes.ListBackgroundImageAttributes?.Border?.All;
 497             }
 498             set
 499             {
 500                 if (value != null)
 501                 {
 502                     CreateListBackgroundAttributes();
 503                     if (dropDownAttributes.ListBackgroundImageAttributes.Border == null)
 504                     {
 505                         dropDownAttributes.ListBackgroundImageAttributes.Border = new RectangleSelector();
 506                     }
 507                     dropDownAttributes.ListBackgroundImageAttributes.Border.All = value;
 508                     RelayoutRequest();
 509                 }
 510             }
 511         }
 512
 513         /// <summary>
 514         /// List relative orientation in DropDown.
 515         /// </summary>
 516         /// <since_tizen> 6 </since_tizen>
 517         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 518         [EditorBrowsable(EditorBrowsableState.Never)]
 519         public ListOrientation ListRelativeOrientation
 520         {
 521             get
 522             {
 523                 return dropDownAttributes.ListRelativeOrientation;
 524             }
 525             set
 526             {
 527                 dropDownAttributes.ListRelativeOrientation = value;
 528                 RelayoutRequest();
 529             }
 530         }
 531
 532         /// <summary>
 533         /// Left space in list.
 534         /// </summary>
 535         /// <since_tizen> 6 </since_tizen>
 536         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 537         [EditorBrowsable(EditorBrowsableState.Never)]
 538         public int ListLeftMargin
 539         {
 540             get
 541             {
 542                 return (int)dropDownAttributes.ListMargin.X;
 543             }
 544             set
 545             {
 546                 dropDownAttributes.ListMargin.X = value;
 547                 RelayoutRequest();
 548             }
 549         }
 550
 551         /// <summary>
 552         /// Right space in list.
 553         /// </summary>
 554         /// <since_tizen> 6 </since_tizen>
 555         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 556         [EditorBrowsable(EditorBrowsableState.Never)]
 557         public int ListRigthMargin
 558         {
 559             get
 560             {
 561                 return (int)dropDownAttributes.ListMargin.Y;
 562             }
 563             set
 564             {
 565                 dropDownAttributes.ListMargin.Y = value;
 566                 RelayoutRequest();
 567             }
 568         }
 569
 570         /// <summary>
 571         /// Top space in list.
 572         /// </summary>
 573         /// <since_tizen> 6 </since_tizen>
 574         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 575         [EditorBrowsable(EditorBrowsableState.Never)]
 576         public int ListTopMargin
 577         {
 578             get
 579             {
 580                 return (int)dropDownAttributes.ListMargin.Z;
 581             }
 582             set
 583             {
 584                 dropDownAttributes.ListMargin.Z = value;
 585                 RelayoutRequest();
 586             }
 587         }
 588
 589         /// <summary>
 590         /// Focused item index in list.
 591         /// </summary>
 592         /// <since_tizen> 6 </since_tizen>
 593         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 594         [EditorBrowsable(EditorBrowsableState.Never)]
 595         public int FocusedItemIndex
 596         {
 597             get
 598             {
 599                 return dropDownAttributes.FocusedItemIndex;
 600             }
 601             set
 602             {
 603                 dropDownAttributes.FocusedItemIndex = value;
 604                 RelayoutRequest();
 605             }
 606         }
 607
 608         /// <summary>
 609         /// Selected item index in list.
 610         /// </summary>
 611         /// <since_tizen> 6 </since_tizen>
 612         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 613         [EditorBrowsable(EditorBrowsableState.Never)]
 614         public int SelectedItemIndex
 615         {
 616             get
 617             {
 618                 return selectedItemIndex;
 619             }
 620             set
 621             {
 622                 if (value == selectedItemIndex || adapter == null || value >= adapter.GetItemCount())
 623                 {
 624                     return;
 625                 }
 626                 UpdateSelectedItem(value);
 627             }
 628         }
 629
 630         /// <summary>
 631         /// List size in DropDown.
 632         /// </summary>
 633         /// <since_tizen> 6 </since_tizen>
 634         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 635         [EditorBrowsable(EditorBrowsableState.Never)]
 636         public Size2D ListSize2D
 637         {
 638             get
 639             {
 640                 return dropDownAttributes.ListSize2D;
 641             }
 642             set
 643             {
 644                 dropDownAttributes.ListSize2D = value;
 645                 RelayoutRequest();
 646             }
 647         }
 648
 649         /// <summary>
 650         /// List padding in DropDown.
 651         /// </summary>
 652         /// <since_tizen> 6 </since_tizen>
 653         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 654         [EditorBrowsable(EditorBrowsableState.Never)]
 655         public Extents ListPadding
 656         {
 657             get
 658             {
 659                 return dropDownAttributes.ListPadding;
 660             }
 661             set
 662             {
 663                 dropDownAttributes.ListPadding = value;
 664                 RelayoutRequest();
 665             }
 666         }
 667
 668         /// <summary>
 669         /// Add list item by item data. The added item will be added to end of all items automatically.
 670         /// </summary>
 671         /// <param name="itemData">Item data which will apply to tab item view.</param>
 672         /// <since_tizen> 6 </since_tizen>
 673         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 674         [EditorBrowsable(EditorBrowsableState.Never)]
 675         public void AddItem(DropDownItemData itemData)
 676         {
 677             adapter.InsertData(-1, itemData);
 678         }
 679
 680         /// <summary>
 681         /// Delete list item by index.
 682         /// </summary>
 683         /// <param name="index">Position index where will be deleted.</param>
 684         /// <since_tizen> 6 </since_tizen>
 685         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 686         [EditorBrowsable(EditorBrowsableState.Never)]
 687         public void DeleteItem(int index)
 688         {
 689             if(index < 0 || index >= adapter.GetItemCount())
 690             {
 691                 return;
 692             }
 693
 694             if (selectedItemIndex == index)
 695             {
 696                 selectedItemIndex = -1;
 697             }
 698             else if(selectedItemIndex > index)
 699             {
 700                 selectedItemIndex--;
 701             }
 702
 703             adapter.RemoveData(index);
 704         }
 705
 706         /// <summary>
 707         /// Insert list item by item data. The inserted item will be added to the special position by index automatically.
 708         /// </summary>
 709         /// <param name="item">Item data which will apply to tab item view.</param>
 710         /// <param name="index">Position index where will be inserted.</param>
 711         /// <since_tizen> 6 </since_tizen>
 712         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 713         [EditorBrowsable(EditorBrowsableState.Never)]
 714         public void InsertItem(DropDownItemData item, int index)
 715         {
 716             if (index < 0 || index >= adapter.GetItemCount())
 717             {
 718                 return;
 719             }
 720
 721             if (selectedItemIndex >= index)
 722             {
 723                 selectedItemIndex++;
 724             }
 725
 726             adapter.InsertData(index, item);
 727         }
 728
 729         /// <summary>
 730         /// Add scroll bar to list.
 731         /// </summary>
 732         /// <param name="scrollBar">Scroll bar defined by user which will be added to list.</param>
 733         /// <since_tizen> 6 </since_tizen>
 734         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 735         [EditorBrowsable(EditorBrowsableState.Never)]
 736         public void AttachScrollBar(ScrollBar scrollBar)
 737         {
 738             if (list == null)
 739             {
 740                 return;
 741             }
 742             list.AttachScrollBar(scrollBar);
 743         }
 744
 745         /// <summary>
 746         /// Detach scroll bar to list.
 747         /// </summary>
 748         /// <since_tizen> 6 </since_tizen>
 749         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 750         [EditorBrowsable(EditorBrowsableState.Never)]
 751         public void DetachScrollBar()
 752         {
 753             if (list == null)
 754             {
 755                 return;
 756             }
 757             list.DetachScrollBar();
 758         }
 759
 760         /// <summary>
 761         /// Update DropDown by attributes.
 762         /// </summary>
 763         /// <since_tizen> 6 </since_tizen>
 764         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 765         [EditorBrowsable(EditorBrowsableState.Never)]
 766         protected override void OnUpdate()
 767         {
 768             if (dropDownAttributes.HeaderTextAttributes != null)
 769             {
 770                 if (headerText == null)
 771                 {
 772                     CreateHeaderText();
 773                 }
 774                 ApplyAttributes(headerText, dropDownAttributes.HeaderTextAttributes);
 775             }
 776
 777
 778             if (dropDownAttributes.ButtonAttributes != null)
 779             {
 780                 if (button == null)
 781                 {
 782                     CreateButton();
 783                 }
 784                 if (dropDownAttributes.Space != null)
 785                 {
 786                     button.Position2D.X = (int)dropDownAttributes.Space.X;
 787                 }
 788
 789                 if (dropDownAttributes.ButtonAttributes.TextAttributes != null)
 790                 {
 791                     ApplyAttributes(buttonText, dropDownAttributes.ButtonAttributes.TextAttributes);
 792                     button.TextSelector = dropDownAttributes.ButtonAttributes.TextAttributes.Text;
 793                     if (dropDownAttributes.ButtonAttributes.TextAttributes.PointSize != null)
 794                     {
 795                         button.PointSize = dropDownAttributes.ButtonAttributes.TextAttributes.PointSize.All.Value;
 796                     }
 797                     button.FontFamily = dropDownAttributes.ButtonAttributes.TextAttributes.FontFamily;
 798                     button.TextColorSelector = dropDownAttributes.ButtonAttributes.TextAttributes.TextColor;
 799                 }
 800                 if (dropDownAttributes.ButtonAttributes.IconAttributes != null)
 801                 {
 802                     button.IconURLSelector = dropDownAttributes.ButtonAttributes.IconAttributes.ResourceURL;
 803                     int iconWidth = 0;
 804                     int buttonTextWidth = 0;
 805                     if (dropDownAttributes.ButtonAttributes.IconAttributes.Size2D != null)
 806                     {
 807                         iconWidth = dropDownAttributes.ButtonAttributes.IconAttributes.Size2D.Width;
 808                     }
 809                     if (buttonText.NaturalSize2D != null)
 810                     {
 811                         buttonTextWidth = buttonText.NaturalSize2D.Width;
 812                     }
 813                     button.SizeWidth = iconWidth + dropDownAttributes.SpaceBetweenButtonTextAndIcon + buttonTextWidth;
 814                 }
 815             }
 816
 817             if (dropDownAttributes.ListBackgroundImageAttributes != null)
 818             {
 819                 if (listBackgroundImage == null)
 820                 {
 821                     CreateListBackgroundImage();
 822                     CreateList();
 823                 }
 824                 ApplyAttributes(listBackgroundImage, dropDownAttributes.ListBackgroundImageAttributes);
 825                 list.FocusedItemIndex = dropDownAttributes.FocusedItemIndex;
 826                 list.Size2D = dropDownAttributes.ListSize2D;
 827                 list.Padding = dropDownAttributes.ListPadding;
 828
 829                 int listBackgroundImageX = 0;
 830                 int listBackgroundImageY = 0;
 831                 if (dropDownAttributes.ListRelativeOrientation == ListOrientation.Left)
 832                 {
 833                     if (dropDownAttributes.ListMargin != null)
 834                     {
 835                         listBackgroundImageX = (int)dropDownAttributes.ListMargin.X;
 836                         listBackgroundImageY = (int)dropDownAttributes.ListMargin.Z;
 837                     }
 838                 }
 839                 else if (dropDownAttributes.ListRelativeOrientation == ListOrientation.Right)
 840                 {
 841                     if (dropDownAttributes.ListMargin != null)
 842                     {
 843                         int listWidth = 0;
 844                         if (list.Size2D != null)
 845                         {
 846                             listWidth = list.Size2D.Width;
 847                         }
 848                         listBackgroundImageX = Size2D.Width - listWidth - (int)dropDownAttributes.ListMargin.Y;
 849                         listBackgroundImageY = (int)dropDownAttributes.ListMargin.Z;
 850                     }
 851                 }
 852                 listBackgroundImage.Position2D = new Position2D(listBackgroundImageX, listBackgroundImageY);
 853             }
 854         }
 855
 856         /// <summary>
 857         /// Dispose DropDown and all children on it.
 858         /// </summary>
 859         /// <param name="type">Dispose type.</param>
 860         /// <since_tizen> 6 </since_tizen>
 861         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 862         [EditorBrowsable(EditorBrowsableState.Never)]
 863         protected override void Dispose(DisposeTypes type)
 864         {
 865             if (disposed)
 866             {
 867                 return;
 868             }
 869
 870             if (type == DisposeTypes.Explicit)
 871             {
 872                 if (headerText != null)
 873                 {
 874                     Utility.Dispose(headerText);
 875                 }
 876
 877                 if (buttonText != null)
 878                 {
 879                     Utility.Dispose(buttonText);
 880                 }
 881
 882                 if (button != null)
 883                 {
 884                     Utility.Dispose(button);
 885                 }
 886
 887                 if (list != null)
 888                 {
 889                     if (listBackgroundImage != null)
 890                     {
 891                         Utility.Dispose(listBackgroundImage);
 892                     }
 893
 894                     Utility.Dispose(list);
 895                 }
 896             }
 897
 898             base.Dispose(type);
 899         }
 900
 901         /// <summary>
 902         /// Get DropDown attribues.
 903         /// </summary>
 904         /// <since_tizen> 6 </since_tizen>
 905         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 906         [EditorBrowsable(EditorBrowsableState.Never)]
 907         protected override Attributes GetAttributes()
 908         {
 909             return new DropDownAttributes();
 910         }
 911
 912         private void Initialize()
 913         {
 914             dropDownAttributes = attributes as DropDownAttributes;
 915             if (dropDownAttributes == null)
 916             {
 917                 throw new Exception("DropDown attribute parse error.");
 918             }
 919             ApplyAttributes(this, dropDownAttributes);
 920         }
 921
 922         private void OnClickEvent(object sender, ItemClickEventArgs e)
 923         {
 924             ItemClickEvent?.Invoke(sender, e);
 925         }
 926
 927         private void CreateHeaderText()
 928         {
 929             headerText = new TextLabel();
 930             headerText.Name = "DropDownHeaderText";
 931             Add(headerText);
 932         }
 933
 934         private void CreateButton()
 935         {
 936             button = new Button()
 937             {
 938                 PositionUsesPivotPoint = true,
 939                 ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
 940                 PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
 941                 HeightResizePolicy = ResizePolicyType.FillToParent,
 942                 IconRelativeOrientation = Button.IconOrientation.Right,
 943             };
 944             button.Name = "DropDownButton";
 945             button.ClickEvent += ButtonClickEvent;
 946             Add(button);
 947
 948             buttonText = new TextLabel()
 949             {
 950                 PositionUsesPivotPoint = true,
 951                 ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
 952                 PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
 953                 WidthResizePolicy = ResizePolicyType.UseNaturalSize,
 954                 HeightResizePolicy = ResizePolicyType.FillToParent,
 955             };
 956             buttonText.Name = "DropDownButtonText";
 957             Add(buttonText);
 958             buttonText.Hide();
 959         }
 960
 961         private void CreateList()
 962         {
 963             list = new FlexibleView();
 964             list.Name = "DropDownList";
 965             LinearLayoutManager layoutManager = new LinearLayoutManager(LinearLayoutManager.VERTICAL);
 966             list.SetLayoutManager(layoutManager);
 967             list.SetAdapter(adapter);
 968             list.Focusable = true;
 969             list.ItemTouchEvent += ListItemTouchEvent;
 970             list.ItemClickEvent += ListItemClickEvent;
 971             listBackgroundImage.Add(list);
 972             listBackgroundImage.Hide();
 973         }
 974
 975         private void ListItemClickEvent(object sender, FlexibleView.ItemClickEventArgs e)
 976         {
 977             if (e.ClickedView != null)
 978             {
 979                 UpdateSelectedItem(e.ClickedView.AdapterPosition);
 980
 981                 ItemClickEventArgs args = new ItemClickEventArgs();
 982                 args.Index = e.ClickedView.AdapterPosition;
 983                 args.Text = (e.ClickedView.ItemView as DropDownItemView)?.Text;
 984                 OnClickEvent(this, args);
 985             }
 986
 987             listBackgroundImage.Hide();
 988         }
 989
 990         private void ListItemTouchEvent(object sender, FlexibleView.ItemTouchEventArgs e)
 991         {
 992             PointStateType state = e.Touch.GetState(0);
 993             switch (state)
 994             {
 995                 case PointStateType.Down:
 996                     if (e.TouchedView != null)
 997                     {
 998                         touchedView = e.TouchedView.ItemView as DropDownItemView;
 999                         if (touchedView != null && touchedView.BackgroundColorSelector != null)
1000                         {
1001                             touchedView.BackgroundColor = touchedView.BackgroundColorSelector.GetValue(ControlStates.Pressed);
1002                         }
1003                     }
1004                     break;
1005                 case PointStateType.Motion:
1006                     if (touchedView != null && touchedView.BackgroundColorSelector != null)
1007                     {
1008                         touchedView.BackgroundColor = touchedView.BackgroundColorSelector.GetValue(ControlStates.Normal);
1009                     }
1010                     break;
1011                 case PointStateType.Up:
1012                     if (touchedView != null && touchedView.BackgroundColorSelector != null)
1013                     {
1014                         touchedView.BackgroundColor = touchedView.BackgroundColorSelector.GetValue(ControlStates.Selected);
1015                     }
1016                     break;
1017                 default:
1018                     break;
1019             }
1020         }
1021
1022         private void UpdateSelectedItem(int index)
1023         {
1024             if (selectedItemIndex != -1)
1025             {
1026                 DropDownItemData data = adapter.GetData(selectedItemIndex);
1027                 if(data != null)
1028                 {
1029                     data.IsSelected = false;
1030                 }
1031                 DropDownItemView view = list?.FindViewHolderForAdapterPosition(selectedItemIndex)?.ItemView as DropDownItemView;
1032                 if (view != null)
1033                 {
1034                     view.IsSelected = false;
1035                 }
1036             }
1037
1038             if (index != -1)
1039             {
1040                 DropDownItemData data = adapter.GetData(index);
1041                 if (data != null)
1042                 {
1043                     data.IsSelected = true;
1044                 }
1045                 DropDownItemView view = list?.FindViewHolderForAdapterPosition(index)?.ItemView as DropDownItemView;
1046                 if (view != null)
1047                 {
1048                     view.IsSelected = true;
1049                     button.Text = view.Text;
1050                 }
1051             }
1052
1053             selectedItemIndex = index;
1054         }
1055
1056         private void CreateListBackgroundImage()
1057         {
1058             listBackgroundImage = new ImageView
1059             {
1060                 Name = "ListBackgroundImage",
1061                 PositionUsesPivotPoint = true,
1062                 ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
1063                 PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
1064                 WidthResizePolicy = ResizePolicyType.FitToChildren,
1065                 HeightResizePolicy = ResizePolicyType.FitToChildren,
1066             };
1067             Add(listBackgroundImage);
1068         }
1069
1070         private void ButtonClickEvent(object sender, Button.ClickEventArgs e)
1071         {
1072             listBackgroundImage.Show();
1073         }
1074
1075         private void CreateHeaderTextAttributes()
1076         {
1077             if (dropDownAttributes.HeaderTextAttributes == null)
1078             {
1079                 dropDownAttributes.HeaderTextAttributes = new TextAttributes()
1080                 {
1081                     PositionUsesPivotPoint = true,
1082                     ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
1083                     PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
1084                     WidthResizePolicy = ResizePolicyType.FillToParent,
1085                     HeightResizePolicy = ResizePolicyType.FillToParent,
1086                     HorizontalAlignment = HorizontalAlignment.Center,
1087                     VerticalAlignment = VerticalAlignment.Center,
1088                 };
1089             }
1090         }
1091
1092         private void CreateButtonAttributes()
1093         {
1094             if (dropDownAttributes.ButtonAttributes == null)
1095             {
1096                 dropDownAttributes.ButtonAttributes = new ButtonAttributes();
1097             }
1098         }
1099
1100         private void CreateButtonTextAttributes()
1101         {
1102             CreateButtonAttributes();
1103
1104             if (dropDownAttributes.ButtonAttributes.TextAttributes == null)
1105             {
1106                 dropDownAttributes.ButtonAttributes.TextAttributes = new TextAttributes
1107                 {
1108                     PositionUsesPivotPoint = true,
1109                     ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
1110                     PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
1111                     WidthResizePolicy = ResizePolicyType.UseNaturalSize,
1112                     HeightResizePolicy = ResizePolicyType.FillToParent,
1113                     Position2D = new Position2D(0, 0),
1114                     HorizontalAlignment = HorizontalAlignment.Begin,
1115                     VerticalAlignment = VerticalAlignment.Center,
1116                 };
1117             }
1118         }
1119
1120         private void CreateButtonIconAttributes()
1121         {
1122             CreateButtonAttributes();
1123
1124             if (dropDownAttributes.ButtonAttributes.IconAttributes == null)
1125             {
1126                 dropDownAttributes.ButtonAttributes.IconAttributes = new ImageAttributes
1127                 {
1128                     PositionUsesPivotPoint = true,
1129                     ParentOrigin = Tizen.NUI.ParentOrigin.CenterRight,
1130                     PivotPoint = Tizen.NUI.PivotPoint.CenterRight,
1131                 };
1132             }
1133         }
1134
1135         private void CreateListBackgroundAttributes()
1136         {
1137             if (dropDownAttributes.ListBackgroundImageAttributes == null)
1138             {
1139                 dropDownAttributes.ListBackgroundImageAttributes = new ImageAttributes
1140                 {
1141                     PositionUsesPivotPoint = true,
1142                     ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
1143                     PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
1144                 };
1145             }
1146         }
1147         #endregion
1148
1149         #region ItemClickEventArgs
1150         /// <summary>
1151         /// ItemClickEventArgs is a class to record item click event arguments which will sent to user.
1152         /// </summary>
1153         /// <since_tizen> 6 </since_tizen>
1154         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1155         [EditorBrowsable(EditorBrowsableState.Never)]
1156         public class ItemClickEventArgs : EventArgs
1157         {
1158             /// <summary> Clicked item index of DropDown's list </summary>
1159             /// <since_tizen> 6 </since_tizen>
1160             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1161             [EditorBrowsable(EditorBrowsableState.Never)]
1162             public int Index;
1163             /// <summary> Clicked item text string of DropDown's list </summary>
1164             /// <since_tizen> 6 </since_tizen>
1165             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1166             [EditorBrowsable(EditorBrowsableState.Never)]
1167             public string Text;
1168         }
1169         #endregion
1170
1171         #region DropDownItemData
1172         /// <summary>
1173         /// DropDownItemData is a class to record all data which will be applied to DropDown item.
1174         /// </summary>
1175         /// <since_tizen> 6 </since_tizen>
1176         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1177         [EditorBrowsable(EditorBrowsableState.Never)]
1178         public class DropDownItemData
1179         {
1180             private DropDownItemAttributes itemDataAttributes = new DropDownItemAttributes();
1181
1182             /// <summary>
1183             /// Creates a new instance of a DropDownItemData.
1184             /// </summary>
1185             /// <since_tizen> 6 </since_tizen>
1186             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1187             [EditorBrowsable(EditorBrowsableState.Never)]
1188             public DropDownItemData()
1189             {
1190                 Initalize();
1191             }
1192
1193             /// <summary>
1194             /// Creates a new instance of a DropDownItemData with style.
1195             /// </summary>
1196             /// <param name="style">Create DropDownItemData by special style defined in UX.</param>
1197             /// <since_tizen> 6 </since_tizen>
1198             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1199             [EditorBrowsable(EditorBrowsableState.Never)]
1200             public DropDownItemData(string style)
1201             {
1202                 if(style != null)
1203                 {
1204                     Attributes attributes = StyleManager.Instance.GetAttributes(style);
1205                     if(attributes == null)
1206                     {
1207                         throw new InvalidOperationException($"There is no style {style}");
1208                     }
1209                     itemDataAttributes = attributes as DropDownItemAttributes;
1210                 }
1211                 Initalize();
1212             }
1213
1214             /// <summary>
1215             /// Creates a new instance of a DropDownItemData with attributes.
1216             /// </summary>
1217             /// <param name="attributes">Create DropDownItemData by attributes customized by user.</param>
1218             /// <since_tizen> 6 </since_tizen>
1219             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1220             [EditorBrowsable(EditorBrowsableState.Never)]
1221             public DropDownItemData(DropDownItemAttributes attributes)
1222             {
1223                 itemDataAttributes = attributes.Clone() as DropDownItemAttributes;
1224                 Initalize();
1225             }
1226
1227             /// <summary>
1228             /// DropDown item size.
1229             /// </summary>
1230             /// <since_tizen> 6 </since_tizen>
1231             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1232             [EditorBrowsable(EditorBrowsableState.Never)]
1233             public Size2D Size2D
1234             {
1235                 get
1236                 {
1237                     return itemDataAttributes.Size2D;
1238                 }
1239                 set
1240                 {
1241                     itemDataAttributes.Size2D = value;
1242                 }
1243             }
1244
1245             /// <summary>
1246             /// DropDown item background color selector.
1247             /// </summary>
1248             /// <since_tizen> 6 </since_tizen>
1249             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1250             [EditorBrowsable(EditorBrowsableState.Never)]
1251             public ColorSelector BackgroundColorSelector
1252             {
1253                 get
1254                 {
1255                     return itemDataAttributes.BackgroundColor;
1256                 }
1257                 set
1258                 {
1259                     if (itemDataAttributes.BackgroundColor == null)
1260                     {
1261                         itemDataAttributes.BackgroundColor = value.Clone() as ColorSelector;
1262                     }
1263                     else
1264                     {
1265                         itemDataAttributes.BackgroundColor = value.Clone();
1266                     }
1267
1268                 }
1269             }
1270
1271             /// <summary>
1272             /// DropDown item text string.
1273             /// </summary>
1274             /// <since_tizen> 6 </since_tizen>
1275             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1276             [EditorBrowsable(EditorBrowsableState.Never)]
1277             public string Text
1278             {
1279                 get
1280                 {
1281                     return itemDataAttributes.TextAttributes?.Text?.All;
1282                 }
1283                 set
1284                 {
1285                     CreateTextAttributes();
1286                     if (itemDataAttributes.TextAttributes.Text == null)
1287                     {
1288                         itemDataAttributes.TextAttributes.Text = new StringSelector { All = value };
1289                     }
1290                     else
1291                     {
1292                         itemDataAttributes.TextAttributes.Text.All = value;
1293                     }
1294                 }
1295             }
1296
1297             /// <summary>
1298             /// DropDown item text's point size.
1299             /// </summary>
1300             /// <since_tizen> 6 </since_tizen>
1301             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1302             [EditorBrowsable(EditorBrowsableState.Never)]
1303             public float PointSize
1304             {
1305                 get
1306                 {
1307                     return itemDataAttributes.TextAttributes?.PointSize?.All ?? 0;
1308                 }
1309                 set
1310                 {
1311                     CreateTextAttributes();
1312                     if (itemDataAttributes.TextAttributes.PointSize == null)
1313                     {
1314                         itemDataAttributes.TextAttributes.PointSize = new FloatSelector { All = value };
1315                     }
1316                     else
1317                     {
1318                         itemDataAttributes.TextAttributes.PointSize.All = value;
1319                     }
1320                 }
1321             }
1322
1323             /// <summary>
1324             /// DropDown item text's font family.
1325             /// </summary>
1326             /// <since_tizen> 6 </since_tizen>
1327             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1328             [EditorBrowsable(EditorBrowsableState.Never)]
1329             public string FontFamily
1330             {
1331                 get
1332                 {
1333                     return itemDataAttributes.TextAttributes?.FontFamily;
1334                 }
1335                 set
1336                 {
1337                     CreateTextAttributes();
1338                     itemDataAttributes.TextAttributes.FontFamily = value;
1339                 }
1340             }
1341
1342             /// <summary>
1343             /// DropDown item text's position.
1344             /// </summary>
1345             /// <since_tizen> 6 </since_tizen>
1346             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1347             [EditorBrowsable(EditorBrowsableState.Never)]
1348             public Position2D TextPosition2D
1349             {
1350                 get
1351                 {
1352                     return itemDataAttributes.TextAttributes?.Position2D;
1353                 }
1354                 set
1355                 {
1356                     CreateTextAttributes();
1357                     itemDataAttributes.TextAttributes.Position2D = value;
1358                 }
1359             }
1360
1361             /// <summary>
1362             /// DropDown item's icon's resource url.
1363             /// </summary>
1364             /// <since_tizen> 6 </since_tizen>
1365             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1366             [EditorBrowsable(EditorBrowsableState.Never)]
1367             public string IconResourceUrl
1368             {
1369                 get
1370                 {
1371                     return itemDataAttributes.IconAttributes?.ResourceURL?.All;
1372                 }
1373                 set
1374                 {
1375                     CreateIconAttributes();
1376                     if (itemDataAttributes.IconAttributes.ResourceURL == null)
1377                     {
1378                         itemDataAttributes.IconAttributes.ResourceURL = new StringSelector { All = value };
1379                     }
1380                     else
1381                     {
1382                         itemDataAttributes.IconAttributes.ResourceURL.All = value;
1383                     }
1384                 }
1385             }
1386
1387             /// <summary>
1388             /// DropDown item's icon's size.
1389             /// </summary>
1390             /// <since_tizen> 6 </since_tizen>
1391             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1392             [EditorBrowsable(EditorBrowsableState.Never)]
1393             public Size2D IconSize2D
1394             {
1395                 get
1396                 {
1397                     return itemDataAttributes.IconAttributes?.Size2D;
1398                 }
1399                 set
1400                 {
1401                     CreateIconAttributes();
1402                     itemDataAttributes.IconAttributes.Size2D = value;
1403                 }
1404             }
1405
1406             /// <summary>
1407             /// DropDown item's icon's position.
1408             /// </summary>
1409             /// <since_tizen> 6 </since_tizen>
1410             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1411             [EditorBrowsable(EditorBrowsableState.Never)]
1412             public Position2D IconPosition2D
1413             {
1414                 get
1415                 {
1416                     return itemDataAttributes.IconAttributes.Position2D;
1417                 }
1418                 set
1419                 {
1420                     CreateIconAttributes();
1421                     itemDataAttributes.IconAttributes.Position2D = value;
1422                 }
1423             }
1424
1425             /// <summary>
1426             /// DropDown item's check image's resource url.
1427             /// </summary>
1428             /// <since_tizen> 6 </since_tizen>
1429             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1430             [EditorBrowsable(EditorBrowsableState.Never)]
1431             public string CheckImageResourceUrl
1432             {
1433                 get
1434                 {
1435                     return itemDataAttributes.CheckImageAttributes?.ResourceURL?.All;
1436                 }
1437                 set
1438                 {
1439                     CreateCheckImageAttributes();
1440                     if (itemDataAttributes.CheckImageAttributes.ResourceURL == null)
1441                     {
1442                         itemDataAttributes.CheckImageAttributes.ResourceURL = new StringSelector { All = value };
1443                     }
1444                     else
1445                     {
1446                         itemDataAttributes.CheckImageAttributes.ResourceURL.All = value;
1447                     }
1448                 }
1449             }
1450
1451             /// <summary>
1452             /// DropDown item's check image's size.
1453             /// </summary>
1454             /// <since_tizen> 6 </since_tizen>
1455             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1456             [EditorBrowsable(EditorBrowsableState.Never)]
1457             public Size2D CheckImageSize2D
1458             {
1459                 get
1460                 {
1461                     return itemDataAttributes.CheckImageAttributes?.Size2D;
1462                 }
1463                 set
1464                 {
1465                     CreateCheckImageAttributes();
1466                     itemDataAttributes.CheckImageAttributes.Size2D = value;
1467                 }
1468             }
1469
1470             /// <summary>
1471             /// DropDown item's check image's right space.
1472             /// </summary>
1473             /// <since_tizen> 6 </since_tizen>
1474             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1475             [EditorBrowsable(EditorBrowsableState.Never)]
1476             public int CheckImageRightSpace
1477             {
1478                 get
1479                 {
1480                     return itemDataAttributes.CheckImageRightSpace;
1481                 }
1482                 set
1483                 {
1484                     itemDataAttributes.CheckImageRightSpace = value;
1485                 }
1486             }
1487
1488             /// <summary>
1489             /// Flag to decide DropDown item is selected or not.
1490             /// </summary>
1491             /// <since_tizen> 6 </since_tizen>
1492             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1493             [EditorBrowsable(EditorBrowsableState.Never)]
1494             public bool IsSelected
1495             {
1496                 get
1497                 {
1498                     return itemDataAttributes.IsSelected;
1499                 }
1500                 set
1501                 {
1502                     itemDataAttributes.IsSelected = value;
1503                 }
1504             }
1505
1506             private void Initalize()
1507             {
1508                 if (itemDataAttributes == null)
1509                 {
1510                     throw new Exception("Button attribute parse error.");
1511                 }
1512             }
1513
1514             private void CreateTextAttributes()
1515             {
1516                 if(itemDataAttributes.TextAttributes == null)
1517                 {
1518                     itemDataAttributes.TextAttributes = new TextAttributes
1519                     {
1520                         PositionUsesPivotPoint = true,
1521                         ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
1522                         PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
1523                         WidthResizePolicy = ResizePolicyType.UseNaturalSize,
1524                         HeightResizePolicy = ResizePolicyType.FillToParent,
1525                         VerticalAlignment = VerticalAlignment.Center,
1526                         HorizontalAlignment = HorizontalAlignment.Begin,
1527                     };
1528                 }
1529             }
1530
1531             private void CreateIconAttributes()
1532             {
1533                 if (itemDataAttributes.IconAttributes == null)
1534                 {
1535                     itemDataAttributes.IconAttributes = new ImageAttributes
1536                     {
1537                         PositionUsesPivotPoint = true,
1538                         ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
1539                         PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
1540                     };
1541                 }
1542             }
1543
1544             private void CreateCheckImageAttributes()
1545             {
1546                 if (itemDataAttributes.CheckImageAttributes == null)
1547                 {
1548                     itemDataAttributes.CheckImageAttributes = new ImageAttributes
1549                     {
1550                         PositionUsesPivotPoint = true,
1551                         ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
1552                         PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
1553                     };
1554                 }
1555             }
1556         }
1557         #endregion
1558
1559         #region DropDownItemView
1560         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1561         [EditorBrowsable(EditorBrowsableState.Never)]
1562         internal class DropDownItemView : Control
1563         {
1564             private TextLabel mText = null;
1565             private ImageView mIcon = null;
1566             private ImageView mCheck = null;
1567
1568             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1569             [EditorBrowsable(EditorBrowsableState.Never)]
1570             public DropDownItemView() : base()
1571             {
1572             }
1573
1574             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1575             [EditorBrowsable(EditorBrowsableState.Never)]
1576             public ColorSelector BackgroundColorSelector
1577             {
1578                 get;
1579                 set;
1580             }
1581
1582             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1583             [EditorBrowsable(EditorBrowsableState.Never)]
1584             public string Text
1585             {
1586                 get
1587                 {
1588                     if(mText == null)
1589                     {
1590                         return null;
1591                     }
1592                     return mText.Text;
1593                 }
1594                 set
1595                 {
1596                     CreateText();
1597                     mText.Text = value;
1598                 }
1599             }
1600
1601             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1602             [EditorBrowsable(EditorBrowsableState.Never)]
1603             public string FontFamily
1604             {
1605                 get
1606                 {
1607                     if (mText == null)
1608                     {
1609                         return null;
1610                     }
1611                     return mText.FontFamily;
1612                 }
1613                 set
1614                 {
1615                     CreateText();
1616                     mText.FontFamily = value;
1617                 }
1618             }
1619
1620             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1621             [EditorBrowsable(EditorBrowsableState.Never)]
1622             public float PointSize
1623             {
1624                 get
1625                 {
1626                     if (mText == null)
1627                     {
1628                         return 0;
1629                     }
1630                     return mText.PointSize;
1631                 }
1632                 set
1633                 {
1634                     CreateText();
1635                     mText.PointSize = value;
1636                 }
1637             }
1638
1639             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1640             [EditorBrowsable(EditorBrowsableState.Never)]
1641             public Color TextColor
1642             {
1643                 get
1644                 {
1645                     if (mText == null)
1646                     {
1647                         return null;
1648                     }
1649                     return mText.TextColor;
1650                 }
1651                 set
1652                 {
1653                     CreateText();
1654                     mText.TextColor = value;
1655                 }
1656             }
1657
1658             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1659             [EditorBrowsable(EditorBrowsableState.Never)]
1660             public Position2D TextPosition2D
1661             {
1662                 get
1663                 {
1664                     if (mText == null)
1665                     {
1666                         return null;
1667                     }
1668                     return mText.Position2D;
1669                 }
1670                 set
1671                 {
1672                     CreateText();
1673                     mText.Position2D = value;
1674                 }
1675             }
1676
1677             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1678             [EditorBrowsable(EditorBrowsableState.Never)]
1679             public string IconResourceUrl
1680             {
1681                 get
1682                 {
1683                     if (mIcon == null)
1684                     {
1685                         return null;
1686                     }
1687                     return mIcon.ResourceUrl;
1688                 }
1689                 set
1690                 {
1691                     CreateIcon();
1692                     mIcon.ResourceUrl = value;
1693                 }
1694             }
1695
1696             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1697             [EditorBrowsable(EditorBrowsableState.Never)]
1698             public Size2D IconSize2D
1699             {
1700                 get
1701                 {
1702                     if (mIcon == null)
1703                     {
1704                         return null;
1705                     }
1706                     return mIcon.Size2D;
1707                 }
1708                 set
1709                 {
1710                     CreateIcon();
1711                     mIcon.Size2D = value;
1712                 }
1713             }
1714
1715             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1716             [EditorBrowsable(EditorBrowsableState.Never)]
1717             public Position2D IconPosition2D
1718             {
1719                 get
1720                 {
1721                     if (mIcon == null)
1722                     {
1723                         return null;
1724                     }
1725                     return mIcon.Position2D;
1726                 }
1727                 set
1728                 {
1729                     CreateIcon();
1730                     mIcon.Position2D = value;
1731                 }
1732             }
1733
1734             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1735             [EditorBrowsable(EditorBrowsableState.Never)]
1736             public string CheckResourceUrl
1737             {
1738                 get
1739                 {
1740                     if (mCheck == null)
1741                     {
1742                         return null;
1743                     }
1744                     return mCheck.ResourceUrl;
1745                 }
1746                 set
1747                 {
1748                     CreateCheckImage();
1749                     mCheck.ResourceUrl = value;
1750                 }
1751             }
1752
1753             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1754             [EditorBrowsable(EditorBrowsableState.Never)]
1755             public Position2D CheckPosition2D
1756             {
1757                 get
1758                 {
1759                     if (mCheck == null)
1760                     {
1761                         return null;
1762                     }
1763                     return mCheck.Position2D;
1764                 }
1765                 set
1766                 {
1767                     CreateCheckImage();
1768                     mCheck.Position2D = value;
1769                 }
1770             }
1771
1772             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1773             [EditorBrowsable(EditorBrowsableState.Never)]
1774             public Size2D CheckImageSize2D
1775             {
1776                 get
1777                 {
1778                     if (mCheck == null)
1779                     {
1780                         return null;
1781                     }
1782                     return mCheck.Size2D;
1783                 }
1784                 set
1785                 {
1786                     CreateCheckImage();
1787                     mCheck.Size2D = value;
1788                 }
1789             }
1790
1791             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1792             [EditorBrowsable(EditorBrowsableState.Never)]
1793             public bool IsSelected
1794             {
1795                 get
1796                 {
1797                     if (mCheck == null)
1798                     {
1799                         return false;
1800                     }
1801                     return mCheck.Visibility;
1802                 }
1803                 set
1804                 {
1805                     CreateCheckImage();
1806                     if(value)
1807                     {
1808                         mCheck.Show();
1809                     }
1810                     else
1811                     {
1812                         mCheck.Hide();
1813                     }
1814                 }
1815             }
1816
1817             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1818             [EditorBrowsable(EditorBrowsableState.Never)]
1819             protected override void Dispose(DisposeTypes type)
1820             {
1821                 if (disposed)
1822                 {
1823                     return;
1824                 }
1825
1826                 if (type == DisposeTypes.Explicit)
1827                 {
1828                     if (mText != null)
1829                     {
1830                         Remove(mText);
1831                         mText.Dispose();
1832                         mText = null;
1833                     }
1834
1835                     if (mIcon != null)
1836                     {
1837                         Remove(mIcon);
1838                         mIcon.Dispose();
1839                         mIcon = null;
1840                     }
1841
1842                     if (mCheck != null)
1843                     {
1844                         Remove(mCheck);
1845                         mCheck.Dispose();
1846                         mCheck = null;
1847                     }
1848                 }
1849                 base.Dispose(type);
1850             }
1851
1852             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1853             [EditorBrowsable(EditorBrowsableState.Never)]
1854             protected override Attributes GetAttributes()
1855             {
1856                 return null;
1857             }
1858
1859             private void CreateIcon()
1860             {
1861                 if(mIcon == null)
1862                 {
1863                     mIcon = new ImageView()
1864                     {
1865                         PositionUsesPivotPoint = true,
1866                         ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
1867                         PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
1868                     };
1869                     Add(mIcon);
1870                 }
1871             }
1872
1873             private void CreateText()
1874             {
1875                 if (mText == null)
1876                 {
1877                     mText = new TextLabel()
1878                     {
1879                         PositionUsesPivotPoint = true,
1880                         ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
1881                         PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
1882                         WidthResizePolicy = ResizePolicyType.UseNaturalSize,
1883                         HeightResizePolicy = ResizePolicyType.FillToParent,
1884                         VerticalAlignment = VerticalAlignment.Center,
1885                         HorizontalAlignment = HorizontalAlignment.Begin,
1886                     };
1887                     Add(mText);
1888                 }
1889             }
1890
1891             private void CreateCheckImage()
1892             {
1893                 if (mCheck == null)
1894                 {
1895                     mCheck = new ImageView()
1896                     {
1897                         PositionUsesPivotPoint = true,
1898                         ParentOrigin = Tizen.NUI.ParentOrigin.TopLeft,
1899                         PivotPoint = Tizen.NUI.PivotPoint.TopLeft,
1900                     };
1901                     Add(mCheck);
1902                 }
1903                 mCheck.Hide();
1904             }
1905         }
1906         #endregion
1907
1908         #region DropDownListBridge
1909
1910         /// <summary>
1911         /// DropDownListBridge is bridge to contact item data and item view.
1912         /// </summary>
1913         /// <since_tizen> 6 </since_tizen>
1914         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1915         [EditorBrowsable(EditorBrowsableState.Never)]
1916         public class DropDownListBridge : FlexibleView.Adapter
1917         {
1918             private List<DropDownItemData> mDatas = new List<DropDownItemData>();
1919
1920             /// <summary>
1921             /// Creates a new instance of a DropDownListBridge.
1922             /// </summary>
1923             /// <since_tizen> 6 </since_tizen>
1924             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1925             [EditorBrowsable(EditorBrowsableState.Never)]
1926             public DropDownListBridge()
1927             {
1928             }
1929
1930             /// <summary>
1931             /// Insert data. The inserted data will be added to the special position by index automatically.
1932             /// </summary>
1933             /// <param name="position">Position index where will be inserted.</param>
1934             /// <param name="data">Item data which will apply to tab item view.</param>
1935             /// <since_tizen> 6 </since_tizen>
1936             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1937             [EditorBrowsable(EditorBrowsableState.Never)]
1938             public void InsertData(int position, DropDownItemData data)
1939             {
1940                 if(position == -1)
1941                 {
1942                     position = mDatas.Count;
1943                 }
1944                 mDatas.Insert(position, data);
1945                 NotifyItemInserted(position);
1946             }
1947
1948             /// <summary>
1949             /// Remove data by position.
1950             /// </summary>
1951             /// <param name="position">Position index where will be removed.</param>
1952             /// <since_tizen> 6 </since_tizen>
1953             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1954             [EditorBrowsable(EditorBrowsableState.Never)]
1955             public void RemoveData(int position)
1956             {
1957                 mDatas.RemoveAt(position);
1958                 NotifyItemRemoved(position);
1959             }
1960
1961             /// <summary>
1962             /// Get data by position.
1963             /// </summary>
1964             /// <param name="position">Position index where will be gotten.</param>
1965             /// <since_tizen> 6 </since_tizen>
1966             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1967             [EditorBrowsable(EditorBrowsableState.Never)]
1968             public DropDownItemData GetData(int position)
1969             {
1970                 return mDatas[position];
1971             }
1972
1973             /// <summary>
1974             /// Get view holder by view type.
1975             /// </summary>
1976             /// <param name="viewType">Create item view.</param>
1977             /// <since_tizen> 6 </since_tizen>
1978             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1979             [EditorBrowsable(EditorBrowsableState.Never)]
1980             public override FlexibleView.ViewHolder OnCreateViewHolder(int viewType)
1981             {
1982                 FlexibleView.ViewHolder viewHolder = new FlexibleView.ViewHolder(new DropDownItemView());
1983
1984                 return viewHolder;
1985             }
1986
1987             /// <summary>
1988             /// Binder view holder, it can be override.
1989             /// </summary>
1990             /// <param name="holder">View holder.</param>
1991             /// <param name="position">Position index where will be gotten.</param>
1992             /// <since_tizen> 6 </since_tizen>
1993             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
1994             [EditorBrowsable(EditorBrowsableState.Never)]
1995             public override void OnBindViewHolder(FlexibleView.ViewHolder holder, int position)
1996             {
1997                 DropDownItemData listItemData = mDatas[position];
1998                 if(listItemData == null)
1999                 {
2000                     return;
2001                 }
2002                 DropDownItemView listItemView = holder.ItemView as DropDownItemView;
2003                 listItemView.Name = "Item" + position;
2004                 if (listItemData.Size2D != null)
2005                 {
2006                     holder.ItemView.Size2D = listItemData.Size2D;
2007                 }
2008
2009                 if (listItemView != null)
2010                 {
2011                     listItemView.BackgroundColorSelector = listItemData.BackgroundColorSelector;
2012                     if (listItemData.Text != null)
2013                     {
2014                         listItemView.Text = listItemData.Text;
2015                         listItemView.PointSize = listItemData.PointSize;
2016                         listItemView.FontFamily = listItemData.FontFamily;
2017                         listItemView.TextPosition2D = listItemData.TextPosition2D;
2018                     }
2019
2020                     if (listItemData.IconResourceUrl != null)
2021                     {
2022                         listItemView.IconResourceUrl = listItemData.IconResourceUrl;
2023                         listItemView.IconSize2D = listItemData.IconSize2D;
2024                         if (listItemView.IconSize2D != null)
2025                         {
2026                             listItemView.IconPosition2D = new Position2D(listItemData.IconPosition2D.X, (listItemView.Size2D.Height - listItemView.IconSize2D.Height) / 2);
2027                         }
2028                     }
2029
2030                     if (listItemData.CheckImageResourceUrl != null)
2031                     {
2032                         listItemView.CheckResourceUrl = listItemData.CheckImageResourceUrl;
2033                         listItemView.CheckImageSize2D = listItemData.CheckImageSize2D;
2034                         if (listItemView.CheckImageSize2D != null)
2035                         {
2036                             listItemView.CheckPosition2D = new Position2D(listItemView.Size2D.Width - listItemData.CheckImageRightSpace - listItemView.CheckImageSize2D.Width, (listItemView.Size2D.Height - listItemView.CheckImageSize2D.Height) / 2);
2037                         }
2038                     }
2039
2040                     listItemView.IsSelected = listItemData.IsSelected;
2041                 }
2042             }
2043
2044             /// <summary>
2045             /// Destroy view holder, it can be override.
2046             /// </summary>
2047             /// <param name="holder">View holder.</param>
2048             /// <since_tizen> 6 </since_tizen>
2049             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
2050             [EditorBrowsable(EditorBrowsableState.Never)]
2051             public override void OnDestroyViewHolder(FlexibleView.ViewHolder holder)
2052             {
2053                 if (holder.ItemView != null)
2054                 {
2055                     holder.ItemView.Dispose();
2056                 }
2057             }
2058
2059             /// <summary>
2060             /// Get item count, it can be override.
2061             /// </summary>
2062             /// <since_tizen> 6 </since_tizen>
2063             /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
2064             [EditorBrowsable(EditorBrowsableState.Never)]
2065             public override int GetItemCount()
2066             {
2067                 return mDatas.Count;
2068             }
2069         }
2070         #endregion
2071     }
2072 }