src/Tizen.NUI.Components/Controls/RadioButton.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.ComponentModel;
  18 using Tizen.NUI.BaseComponents;
  19
  20 namespace Tizen.NUI.Components
  21 {
  22     /// <summary>
  23     /// RadioButton is the Class that describe the control which can be checked, but not cleared by a user.
  24     /// </summary>
  25     /// <code>
  26     /// RadioButton radio = new RadioButton("C_RadioButton_WhiteText");
  27     /// radio.Size = new Size(200, 64, 0);
  28     /// radio.Position = new Position(500, posY, 0);
  29     /// radio.Text = "RadioButton";
  30     /// radio.Focusable = true;
  31     /// </code>
  32     /// <since_tizen> 8 </since_tizen>
  33     public class RadioButton : SelectButton
  34     {
  35         private bool selectedAgain = false;
  36
  37         static RadioButton() { }
  38
  39         /// <summary>
  40         /// Creates a new instance of a RadioButton.
  41         /// </summary>
  42         /// <since_tizen> 8 </since_tizen>
  43         public RadioButton() : base() { }
  44         /// <summary>
  45         /// Creates a new instance of a RadioButton with style.
  46         /// </summary>
  47         /// <param name="style"></param>
  48         /// <since_tizen> 8 </since_tizen>
  49         public RadioButton(string style) : base(style) { }
  50         /// <summary>
  51         /// Creates a new instance of a RadioButton with style.
  52         /// </summary>
  53         /// <param name="buttonStyle"></param>
  54         /// <since_tizen> 8 </since_tizen>
  55         public RadioButton(ButtonStyle buttonStyle) : base(buttonStyle) { }
  56
  57         /// <summary>
  58         /// Get RadioButtonGroup to which this selections belong.
  59         /// </summary>
  60         /// <since_tizen> 6 </since_tizen>
  61         /// This will be public opened in tizen_5.5 after ACR done. Before ACR, need to be hidden as inhouse API.
  62         [EditorBrowsable(EditorBrowsableState.Never)]
  63         public new RadioButtonGroup ItemGroup
  64         {
  65             get
  66             {
  67                 return base.ItemGroup as RadioButtonGroup;
  68             }
  69             internal set
  70             {
  71                 base.ItemGroup = value;
  72             }
  73         }
  74
  75         /// <inheritdoc/>
  76         [EditorBrowsable(EditorBrowsableState.Never)]
  77         public override void ApplyStyle(ViewStyle viewStyle)
  78         {
  79             if (viewStyle is ButtonStyle buttonStyle)
  80             {
  81                 if (buttonStyle.IsSelectable == null)
  82                 {
  83                     buttonStyle.IsSelectable = true;
  84                 }
  85
  86                 base.ApplyStyle(buttonStyle);
  87             }
  88         }
  89
  90         /// <inheritdoc/>
  91         [EditorBrowsable(EditorBrowsableState.Never)]
  92         protected override ImageView CreateIcon()
  93         {
  94             return new ImageView
  95             {
  96                 PositionUsesPivotPoint = true,
  97                 ParentOrigin = NUI.ParentOrigin.Center,
  98                 PivotPoint = NUI.PivotPoint.Center,
  99                 WidthResizePolicy = ResizePolicyType.DimensionDependency,
 100                 HeightResizePolicy = ResizePolicyType.SizeRelativeToParent,
 101                 SizeModeFactor = new Vector3(1, 1, 1),
 102             };
 103         }
 104
 105         /// <inheritdoc/>
 106         [EditorBrowsable(EditorBrowsableState.Never)]
 107         public override bool OnKey(Key key)
 108         {
 109             if ((IsEnabled == false) || (key == null))
 110             {
 111                 return false;
 112             }
 113
 114             if (key.State == Key.StateType.Up)
 115             {
 116                 if (key.KeyPressedName == "Return")
 117                 {
 118                     if (IsSelected == true)
 119                     {
 120                         selectedAgain = true;
 121                     }
 122                 }
 123             }
 124
 125             bool ret = base.OnKey(key);
 126
 127             if (selectedAgain == true)
 128             {
 129                 IsSelected = true;
 130                 selectedAgain = false;
 131             }
 132
 133             return ret;
 134         }
 135
 136         /// <inheritdoc/>
 137         [EditorBrowsable(EditorBrowsableState.Never)]
 138         protected override bool HandleControlStateOnTouch(Touch touch)
 139         {
 140             if ((IsEnabled == false) || (touch == null))
 141             {
 142                 return false;
 143             }
 144
 145             PointStateType state = touch.GetState(0);
 146             switch (state)
 147             {
 148                 case PointStateType.Up:
 149                     if (IsSelected == true)
 150                     {
 151                         selectedAgain = true;
 152                     }
 153                     break;
 154                 default:
 155                     break;
 156             }
 157
 158             bool ret = base.HandleControlStateOnTouch(touch);
 159
 160             if (selectedAgain == true)
 161             {
 162                 IsSelected = true;
 163                 selectedAgain = false;
 164             }
 165
 166             return ret;
 167         }
 168
 169         /// <inheritdoc/>
 170         [EditorBrowsable(EditorBrowsableState.Never)]
 171         protected override void OnControlStateChanged(ControlStateChangedEventArgs info)
 172         {
 173             if (info.PreviousState.Contains(ControlState.Selected) != info.CurrentState.Contains(ControlState.Selected))
 174             {
 175                 // RadioButton does not invoke SelectedChanged if button or key
 176                 // is unpressed while its state is selected.
 177                 if (selectedAgain == true)
 178                 {
 179                     return;
 180                 }
 181
 182                 base.OnControlStateChanged(info);
 183             }
 184         }
 185     }
 186 }