test/NUITizenGallery/Examples/CollectionViewTest/AnimalGridPage.cs

   1 /*
   2  * Copyright(c) 2022 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.ComponentModel;
  19 using Tizen.NUI;
  20 using Tizen.NUI.Binding;
  21 using Tizen.NUI.BaseComponents;
  22 using Tizen.NUI.Components;
  23 using Tizen.NUI.Components.Extension;
  24
  25 namespace NUITizenGallery
  26 {
  27     public partial class AnimalGridPage : ContentPage
  28     {
  29         public AnimalGridPage()
  30         {
  31             InitializeComponent();
  32             BindingContext = new Animals();
  33         }
  34
  35         protected override void Dispose(DisposeTypes type)
  36         {
  37             if (Disposed)
  38             {
  39                 return;
  40             }
  41
  42             if (type == DisposeTypes.Explicit)
  43             {
  44                 RemoveAllChildren(true);
  45             }
  46
  47             base.Dispose(type);
  48         }
  49
  50         private void RemoveAllChildren(bool dispose = false)
  51         {
  52             RecursiveRemoveChildren(this, dispose);
  53         }
  54
  55         private void RecursiveRemoveChildren(View parent, bool dispose)
  56         {
  57             if (parent == null)
  58             {
  59                 return;
  60             }
  61
  62             int maxChild = (int)parent.ChildCount;
  63             for (int i = maxChild - 1; i >= 0; --i)
  64             {
  65                 View child = parent.GetChildAt((uint)i);
  66                 if (child == null)
  67                 {
  68                     continue;
  69                 }
  70
  71                 RecursiveRemoveChildren(child, dispose);
  72                 parent.Remove(child);
  73                 if (dispose)
  74                 {
  75                     child.Dispose();
  76                 }
  77             }
  78         }
  79     }
  80 }