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         /// This will be public opened in tizen_6.5 after ACR done. Before ACR, need to be hidden as inhouse API.
 100         [EditorBrowsable(EditorBrowsableState.Never)]
 101         public event EventHandler<AnchorClickedEventArgs> AnchorClicked
 102         {
 103             add
 104             {
 105                 if (textFieldAnchorClickedEventHandler == null)
 106                 {
 107                     textFieldAnchorClickedCallbackDelegate = (OnAnchorClicked);
 108                     AnchorClickedSignal().Connect(textFieldAnchorClickedCallbackDelegate);
 109                 }
 110                 textFieldAnchorClickedEventHandler += value;
 111             }
 112             remove
 113             {
 114                 textFieldAnchorClickedEventHandler -= value;
 115                 if (textFieldAnchorClickedEventHandler == null && AnchorClickedSignal().Empty() == false)
 116                 {
 117                     AnchorClickedSignal().Disconnect(textFieldAnchorClickedCallbackDelegate);
 118                 }
 119             }
 120         }
 121
 122         internal TextFieldSignal TextChangedSignal()
 123         {
 124             TextFieldSignal ret = new TextFieldSignal(Interop.TextField.TextChangedSignal(SwigCPtr), false);
 125             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 126             return ret;
 127         }
 128
 129         internal TextFieldSignal MaxLengthReachedSignal()
 130         {
 131             TextFieldSignal ret = new TextFieldSignal(Interop.TextField.MaxLengthReachedSignal(SwigCPtr), false);
 132             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 133             return ret;
 134         }
 135
 136         internal TextFieldSignal AnchorClickedSignal()
 137         {
 138             TextFieldSignal ret = new TextFieldSignal(Interop.TextField.AnchorClickedSignal(SwigCPtr), false);
 139             if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
 140             return ret;
 141         }
 142
 143         private void OnTextChanged(IntPtr textField)
 144         {
 145             if (textFieldTextChangedEventHandler != null)
 146             {
 147                 TextChangedEventArgs e = new TextChangedEventArgs();
 148
 149                 // Populate all members of "e" (TextChangedEventArgs) with real data
 150                 e.TextField = Registry.GetManagedBaseHandleFromNativePtr(textField) as TextField;
 151                 //here we send all data to user event handlers
 152                 textFieldTextChangedEventHandler(this, e);
 153             }
 154         }
 155
 156         private void OnMaxLengthReached(IntPtr textField)
 157         {
 158             if (textFieldMaxLengthReachedEventHandler != null)
 159             {
 160                 MaxLengthReachedEventArgs e = new MaxLengthReachedEventArgs();
 161
 162                 // Populate all members of "e" (MaxLengthReachedEventArgs) with real data
 163                 e.TextField = Registry.GetManagedBaseHandleFromNativePtr(textField) as TextField;
 164                 //here we send all data to user event handlers
 165                 textFieldMaxLengthReachedEventHandler(this, e);
 166             }
 167         }
 168
 169         private void OnAnchorClicked(IntPtr textField, IntPtr href, uint hrefLength)
 170         {
 171             // Note: hrefLength is useful for get the length of a const char* (href) in dali-toolkit.
 172             // But NUI can get the length of string (href), so hrefLength is not necessary in NUI.
 173             AnchorClickedEventArgs e = new AnchorClickedEventArgs();
 174
 175             // Populate all members of "e" (AnchorClickedEventArgs) with real data
 176             e.Href = Marshal.PtrToStringAnsi(href);
 177             //here we send all data to user event handlers
 178             textFieldAnchorClickedEventHandler?.Invoke(this, e);
 179         }
 180
 181         /// <summary>
 182         /// The TextChanged event arguments.
 183         /// </summary>
 184         /// <since_tizen> 3 </since_tizen>
 185         public class TextChangedEventArgs : EventArgs
 186         {
 187             private TextField textField;
 188
 189             /// <summary>
 190             /// TextField.
 191             /// </summary>
 192             /// <since_tizen> 3 </since_tizen>
 193             public TextField TextField
 194             {
 195                 get
 196                 {
 197                     return textField;
 198                 }
 199                 set
 200                 {
 201                     textField = value;
 202                 }
 203             }
 204         }
 205
 206         /// <summary>
 207         /// The MaxLengthReached event arguments.
 208         /// </summary>
 209         /// <since_tizen> 3 </since_tizen>
 210         public class MaxLengthReachedEventArgs : EventArgs
 211         {
 212             private TextField textField;
 213
 214             /// <summary>
 215             /// TextField.
 216             /// </summary>
 217             /// <since_tizen> 3 </since_tizen>
 218             public TextField TextField
 219             {
 220                 get
 221                 {
 222                     return textField;
 223                 }
 224                 set
 225                 {
 226                     textField = value;
 227                 }
 228             }
 229         }
 230     }
 231 }