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

   1 /*
   2  * Copyright(c) 2021 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 using System;
  19 using System.ComponentModel;
  20 using System.Runtime.InteropServices;
  21
  22 namespace Tizen.NUI.BaseComponents
  23 {
  24     /// <summary>
  25     /// A control which provides a single line editable text field.
  26     /// </summary>
  27     /// <since_tizen> 3 </since_tizen>
  28     public partial class TextField
  29     {
  30         private EventHandler<TextChangedEventArgs> textFieldTextChangedEventHandler;
  31         private TextChangedCallbackDelegate textFieldTextChangedCallbackDelegate;
  32         private EventHandler<MaxLengthReachedEventArgs> textFieldMaxLengthReachedEventHandler;
  33         private MaxLengthReachedCallbackDelegate textFieldMaxLengthReachedCallbackDelegate;
  34         private EventHandler<AnchorClickedEventArgs> textFieldAnchorClickedEventHandler;
  35         private AnchorClickedCallbackDelegate textFieldAnchorClickedCallbackDelegate;
  36
  37         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  38         private delegate void TextChangedCallbackDelegate(IntPtr textField);
  39
  40         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  41         private delegate void MaxLengthReachedCallbackDelegate(IntPtr textField);
  42
  43         [UnmanagedFunctionPointer(CallingConvention.StdCall)]
  44         private delegate void AnchorClickedCallbackDelegate(IntPtr textField, IntPtr href, uint hrefLength);
  45
  46         /// <summary>
  47         /// The TextChanged event.
  48         /// </summary>
  49         /// <since_tizen> 3 </since_tizen>
  50         public event EventHandler<TextChangedEventArgs> TextChanged
  51         {
  52             add
  53             {
  54                 if (textFieldTextChangedEventHandler == null)
  55                 {
  56                     textFieldTextChangedCallbackDelegate = (OnTextChanged);
  57                     TextChangedSignal().Connect(textFieldTextChangedCallbackDelegate);
  58                 }
  59                 textFieldTextChangedEventHandler += value;
  60             }
  61             remove
  62             {
  63                 textFieldTextChangedEventHandler -= value;
  64                 if (textFieldTextChangedEventHandler == null && TextChangedSignal().Empty() == false)
  65                 {
  66                     TextChangedSignal().Disconnect(textFieldTextChangedCallbackDelegate);
  67                 }
  68             }
  69         }
  70
  71         /// <summary>
  72         /// The MaxLengthReached event.
  73         /// </summary>
  74         /// <since_tizen> 3 </since_tizen>
  75         public event EventHandler<MaxLengthReachedEventArgs> MaxLengthReached
  76         {
  77             add
  78             {
  79                 if (textFieldMaxLengthReachedEventHandler == null)
  80                 {
  81                     textFieldMaxLengthReachedCallbackDelegate = (OnMaxLengthReached);
  82                     MaxLengthReachedSignal().Connect(textFieldMaxLengthReachedCallbackDelegate);
  83                 }
  84                 textFieldMaxLengthReachedEventHandler += value;
  85             }
  86             remove
  87             {
  88                 if (textFieldMaxLengthReachedEventHandler == null && MaxLengthReachedSignal().Empty() == false)
  89                 {
  90                     this.MaxLengthReachedSignal().Disconnect(textFieldMaxLengthReachedCallbackDelegate);
  91                 }
  92                 textFieldMaxLengthReachedEventHandler -= value;
  93             }
  94         }
  95
  96         /// <summary>
  97         /// The AnchorClicked signal is emitted when the anchor is clicked.
  98         /// </summary>
  99         /// <since_tizen> 9 </since_tizen>
 100         public event EventHandler<AnchorClickedEventArgs> AnchorClicked
 101         {
 102             add
 103             {
 104                 if (textFieldAnchorClickedEventHandler == null)
 105                 {
 106                     textFieldAnchorClickedCallbackDelegate = (OnAnchorClicked);
 107                     AnchorClickedSignal().Connect(textFieldAnchorClickedCallbackDelegate);
 108                 }
 109                 textFieldAnchorClickedEventHandler += value;
 110             }
 111             remove
 112             {
 113                 textFieldAnchorClickedEventHandler -= value;
 114                 if (textFieldAnchorClickedEventHandler == null && AnchorClickedSignal().Empty() == false)
 115                 {
 116                     AnchorClickedSignal().Disconnect(textFieldAnchorClickedCallbackDelegate);
 117                 }
 118             }
 119         }
 120
 121         internal TextFieldSignal TextChangedSignal()
 122         {
 123             TextFieldSignal ret = new TextFieldSignal(Interop.TextField.TextChangedSignal(SwigCPtr), false);
 124             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 125             return ret;
 126         }
 127
 128         internal TextFieldSignal MaxLengthReachedSignal()
 129         {
 130             TextFieldSignal ret = new TextFieldSignal(Interop.TextField.MaxLengthReachedSignal(SwigCPtr), false);
 131             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 132             return ret;
 133         }
 134
 135         internal TextFieldSignal AnchorClickedSignal()
 136         {
 137             TextFieldSignal ret = new TextFieldSignal(Interop.TextField.AnchorClickedSignal(SwigCPtr), false);
 138             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 139             return ret;
 140         }
 141
 142         private void OnTextChanged(IntPtr textField)
 143         {
 144             if (textFieldTextChangedEventHandler != null)
 145             {
 146                 TextChangedEventArgs e = new TextChangedEventArgs();
 147
 148                 // Populate all members of "e" (TextChangedEventArgs) with real data
 149                 e.TextField = Registry.GetManagedBaseHandleFromNativePtr(textField) as TextField;
 150                 //here we send all data to user event handlers
 151                 textFieldTextChangedEventHandler(this, e);
 152             }
 153         }
 154
 155         private void OnMaxLengthReached(IntPtr textField)
 156         {
 157             if (textFieldMaxLengthReachedEventHandler != null)
 158             {
 159                 MaxLengthReachedEventArgs e = new MaxLengthReachedEventArgs();
 160
 161                 // Populate all members of "e" (MaxLengthReachedEventArgs) with real data
 162                 e.TextField = Registry.GetManagedBaseHandleFromNativePtr(textField) as TextField;
 163                 //here we send all data to user event handlers
 164                 textFieldMaxLengthReachedEventHandler(this, e);
 165             }
 166         }
 167
 168         private void OnAnchorClicked(IntPtr textField, IntPtr href, uint hrefLength)
 169         {
 170             // Note: hrefLength is useful for get the length of a const char* (href) in dali-toolkit.
 171             // But NUI can get the length of string (href), so hrefLength is not necessary in NUI.
 172             AnchorClickedEventArgs e = new AnchorClickedEventArgs();
 173
 174             // Populate all members of "e" (AnchorClickedEventArgs) with real data
 175             e.Href = Marshal.PtrToStringAnsi(href);
 176             //here we send all data to user event handlers
 177             textFieldAnchorClickedEventHandler?.Invoke(this, e);
 178         }
 179
 180         /// <summary>
 181         /// The TextChanged event arguments.
 182         /// </summary>
 183         /// <since_tizen> 3 </since_tizen>
 184         public class TextChangedEventArgs : EventArgs
 185         {
 186             private TextField textField;
 187
 188             /// <summary>
 189             /// TextField.
 190             /// </summary>
 191             /// <since_tizen> 3 </since_tizen>
 192             public TextField TextField
 193             {
 194                 get
 195                 {
 196                     return textField;
 197                 }
 198                 set
 199                 {
 200                     textField = value;
 201                 }
 202             }
 203         }
 204
 205         /// <summary>
 206         /// The MaxLengthReached event arguments.
 207         /// </summary>
 208         /// <since_tizen> 3 </since_tizen>
 209         public class MaxLengthReachedEventArgs : EventArgs
 210         {
 211             private TextField textField;
 212
 213             /// <summary>
 214             /// TextField.
 215             /// </summary>
 216             /// <since_tizen> 3 </since_tizen>
 217             public TextField TextField
 218             {
 219                 get
 220                 {
 221                     return textField;
 222                 }
 223                 set
 224                 {
 225                     textField = value;
 226                 }
 227             }
 228         }
 229     }
 230 }