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TextFieldEvent.cs
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TextFieldEvent.cs
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/*
* Copyright(c) 2021 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
namespace Tizen.NUI.BaseComponents
{
/// <summary>
/// A control which provides a single line editable text field.
/// </summary>
/// <since_tizen> 3 </since_tizen>
public partial class TextField
{
private EventHandler<TextChangedEventArgs> textFieldTextChangedEventHandler;
private TextChangedCallbackDelegate textFieldTextChangedCallbackDelegate;
private EventHandler textFieldCursorPositionChangedEventHandler;
private CursorPositionChangedCallbackDelegate textFieldCursorPositionChangedCallbackDelegate;
private EventHandler<MaxLengthReachedEventArgs> textFieldMaxLengthReachedEventHandler;
private MaxLengthReachedCallbackDelegate textFieldMaxLengthReachedCallbackDelegate;
private EventHandler<AnchorClickedEventArgs> textFieldAnchorClickedEventHandler;
private AnchorClickedCallbackDelegate textFieldAnchorClickedCallbackDelegate;
private EventHandler textFieldSelectionChangedEventHandler;
private SelectionChangedCallbackDelegate textFieldSelectionChangedCallbackDelegate;
private EventHandler<InputFilteredEventArgs> textFieldInputFilteredEventHandler;
private InputFilteredCallbackDelegate textFieldInputFilteredCallbackDelegate;
private EventHandler textFieldSelectionClearedEventHandler;
private SelectionClearedCallbackDelegate textFieldSelectionClearedCallbackDelegate;
[UnmanagedFunctionPointer(CallingConvention.StdCall)]
private delegate void TextChangedCallbackDelegate(IntPtr textField);
[UnmanagedFunctionPointer(CallingConvention.StdCall)]
private delegate void CursorPositionChangedCallbackDelegate(IntPtr textField, uint oldPosition);
[UnmanagedFunctionPointer(CallingConvention.StdCall)]
private delegate void MaxLengthReachedCallbackDelegate(IntPtr textField);
[UnmanagedFunctionPointer(CallingConvention.StdCall)]
private delegate void AnchorClickedCallbackDelegate(IntPtr textField, IntPtr href, uint hrefLength);
[UnmanagedFunctionPointer(CallingConvention.StdCall)]
private delegate void SelectionChangedCallbackDelegate(IntPtr textField, uint oldStart, uint oldEnd);
[UnmanagedFunctionPointer(CallingConvention.StdCall)]
private delegate void InputFilteredCallbackDelegate(IntPtr textField, InputFilterType type);
[UnmanagedFunctionPointer(CallingConvention.StdCall)]
private delegate void SelectionClearedCallbackDelegate(IntPtr textField);
/// <summary>
/// The TextChanged event.
/// </summary>
/// <since_tizen> 3 </since_tizen>
public event EventHandler<TextChangedEventArgs> TextChanged
{
add
{
if (textFieldTextChangedEventHandler == null)
{
textFieldTextChangedCallbackDelegate = (OnTextChanged);
TextChangedSignal().Connect(textFieldTextChangedCallbackDelegate);
}
textFieldTextChangedEventHandler += value;
}
remove
{
textFieldTextChangedEventHandler -= value;
if (textFieldTextChangedEventHandler == null && TextChangedSignal().Empty() == false)
{
TextChangedSignal().Disconnect(textFieldTextChangedCallbackDelegate);
}
}
}
/// <summary>
/// The CursorPositionChanged event is emitted whenever the primary cursor position changed.
/// </summary>
/// <since_tizen> 9 </since_tizen>
public event EventHandler CursorPositionChanged
{
add
{
if (textFieldCursorPositionChangedEventHandler == null)
{
textFieldCursorPositionChangedCallbackDelegate = (OnCursorPositionChanged);
CursorPositionChangedSignal().Connect(textFieldCursorPositionChangedCallbackDelegate);
}
textFieldCursorPositionChangedEventHandler += value;
}
remove
{
if (textFieldCursorPositionChangedEventHandler == null && CursorPositionChangedSignal().Empty() == false)
{
this.CursorPositionChangedSignal().Disconnect(textFieldCursorPositionChangedCallbackDelegate);
}
textFieldCursorPositionChangedEventHandler -= value;
}
}
/// <summary>
/// The MaxLengthReached event.
/// </summary>
/// <since_tizen> 3 </since_tizen>
public event EventHandler<MaxLengthReachedEventArgs> MaxLengthReached
{
add
{
if (textFieldMaxLengthReachedEventHandler == null)
{
textFieldMaxLengthReachedCallbackDelegate = (OnMaxLengthReached);
MaxLengthReachedSignal().Connect(textFieldMaxLengthReachedCallbackDelegate);
}
textFieldMaxLengthReachedEventHandler += value;
}
remove
{
if (textFieldMaxLengthReachedEventHandler == null && MaxLengthReachedSignal().Empty() == false)
{
this.MaxLengthReachedSignal().Disconnect(textFieldMaxLengthReachedCallbackDelegate);
}
textFieldMaxLengthReachedEventHandler -= value;
}
}
/// <summary>
/// The SelectionCleared signal is emitted when selection is cleared.
/// </summary>
/// <since_tizen> 9 </since_tizen>
public event EventHandler SelectionCleared
{
add
{
if (textFieldSelectionClearedEventHandler == null)
{
textFieldSelectionClearedCallbackDelegate = (OnSelectionCleared);
SelectionClearedSignal().Connect(textFieldSelectionClearedCallbackDelegate);
}
textFieldSelectionClearedEventHandler += value;
}
remove
{
if (textFieldSelectionClearedEventHandler == null && SelectionClearedSignal().Empty() == false)
{
this.SelectionClearedSignal().Disconnect(textFieldSelectionClearedCallbackDelegate);
}
textFieldSelectionClearedEventHandler -= value;
}
}
/// <summary>
/// The AnchorClicked signal is emitted when the anchor is clicked.
/// </summary>
/// <since_tizen> 9 </since_tizen>
public event EventHandler<AnchorClickedEventArgs> AnchorClicked
{
add
{
if (textFieldAnchorClickedEventHandler == null)
{
textFieldAnchorClickedCallbackDelegate = (OnAnchorClicked);
AnchorClickedSignal().Connect(textFieldAnchorClickedCallbackDelegate);
}
textFieldAnchorClickedEventHandler += value;
}
remove
{
textFieldAnchorClickedEventHandler -= value;
if (textFieldAnchorClickedEventHandler == null && AnchorClickedSignal().Empty() == false)
{
AnchorClickedSignal().Disconnect(textFieldAnchorClickedCallbackDelegate);
}
}
}
/// <summary>
/// The SelectionChanged signal is emitted whenever the selected text changed.
/// </summary>
/// <since_tizen> 9 </since_tizen>
public event EventHandler SelectionChanged
{
add
{
if (textFieldSelectionChangedEventHandler == null)
{
textFieldSelectionChangedCallbackDelegate = (OnSelectionChanged);
SelectionChangedSignal().Connect(textFieldSelectionChangedCallbackDelegate);
}
textFieldSelectionChangedEventHandler += value;
}
remove
{
if (textFieldSelectionChangedEventHandler == null && SelectionChangedSignal().Empty() == false)
{
this.SelectionChangedSignal().Disconnect(textFieldSelectionChangedCallbackDelegate);
}
textFieldSelectionChangedEventHandler -= value;
}
}
/// <summary>
/// The InputFiltered signal is emitted when the input is filtered by InputFilter. <br />
/// </summary>
/// <remarks>
/// See <see cref="InputFilterType"/> and <see cref="InputFilteredEventArgs"/> for a detailed description. <br />
/// </remarks>
/// <example>
/// The following example demonstrates how to use the InputFiltered event.
/// <code>
/// field.InputFiltered += (s, e) =>
/// {
/// if (e.Type == InputFilterType.Accept)
/// {
/// // If input is filtered by InputFilter of Accept type.
/// }
/// else if (e.Type == InputFilterType.Reject)
/// {
/// // If input is filtered by InputFilter of Reject type.
/// }
/// };
/// </code>
/// </example>
/// <since_tizen> 9 </since_tizen>
public event EventHandler<InputFilteredEventArgs> InputFiltered
{
add
{
if (textFieldInputFilteredEventHandler == null)
{
textFieldInputFilteredCallbackDelegate = (OnInputFiltered);
InputFilteredSignal().Connect(textFieldInputFilteredCallbackDelegate);
}
textFieldInputFilteredEventHandler += value;
}
remove
{
textFieldInputFilteredEventHandler -= value;
if (textFieldInputFilteredEventHandler == null && InputFilteredSignal().Empty() == false)
{
InputFilteredSignal().Disconnect(textFieldInputFilteredCallbackDelegate);
}
}
}
internal TextFieldSignal SelectionClearedSignal()
{
TextFieldSignal ret = new TextFieldSignal(Interop.TextField.SelectionClearedSignal(SwigCPtr), false);
if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
return ret;
}
internal TextFieldSignal TextChangedSignal()
{
TextFieldSignal ret = new TextFieldSignal(Interop.TextField.TextChangedSignal(SwigCPtr), false);
if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
return ret;
}
internal TextFieldSignal CursorPositionChangedSignal()
{
TextFieldSignal ret = new TextFieldSignal(Interop.TextField.CursorPositionChangedSignal(SwigCPtr), false);
if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
return ret;
}
internal TextFieldSignal MaxLengthReachedSignal()
{
TextFieldSignal ret = new TextFieldSignal(Interop.TextField.MaxLengthReachedSignal(SwigCPtr), false);
if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
return ret;
}
internal TextFieldSignal AnchorClickedSignal()
{
TextFieldSignal ret = new TextFieldSignal(Interop.TextField.AnchorClickedSignal(SwigCPtr), false);
if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
return ret;
}
internal TextFieldSignal SelectionChangedSignal()
{
TextFieldSignal ret = new TextFieldSignal(Interop.TextField.SelectionChangedSignal(SwigCPtr), false);
if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
return ret;
}
internal TextFieldSignal InputFilteredSignal()
{
TextFieldSignal ret = new TextFieldSignal(Interop.TextField.InputFilteredSignal(SwigCPtr), false);
if (NDalicPINVOKE.SWIGPendingException.Pending) throw NDalicPINVOKE.SWIGPendingException.Retrieve();
return ret;
}
private void OnSelectionCleared(IntPtr textField)
{
//no data to be sent to the user
textFieldSelectionClearedEventHandler?.Invoke(this, EventArgs.Empty);
}
private void OnTextChanged(IntPtr textField)
{
if (textFieldTextChangedEventHandler != null)
{
TextChangedEventArgs e = new TextChangedEventArgs();
// Populate all members of "e" (TextChangedEventArgs) with real data
e.TextField = Registry.GetManagedBaseHandleFromNativePtr(textField) as TextField;
//here we send all data to user event handlers
textFieldTextChangedEventHandler(this, e);
}
}
private void OnCursorPositionChanged(IntPtr textField, uint oldPosition)
{
// no data to be sent to the user, as in NUI there is no event provide old values.
textFieldCursorPositionChangedEventHandler?.Invoke(this, EventArgs.Empty);
}
private void OnMaxLengthReached(IntPtr textField)
{
if (textFieldMaxLengthReachedEventHandler != null)
{
MaxLengthReachedEventArgs e = new MaxLengthReachedEventArgs();
// Populate all members of "e" (MaxLengthReachedEventArgs) with real data
e.TextField = Registry.GetManagedBaseHandleFromNativePtr(textField) as TextField;
//here we send all data to user event handlers
textFieldMaxLengthReachedEventHandler(this, e);
}
}
private void OnAnchorClicked(IntPtr textField, IntPtr href, uint hrefLength)
{
// Note: hrefLength is useful for get the length of a const char* (href) in dali-toolkit.
// But NUI can get the length of string (href), so hrefLength is not necessary in NUI.
AnchorClickedEventArgs e = new AnchorClickedEventArgs();
// Populate all members of "e" (AnchorClickedEventArgs) with real data
e.Href = Marshal.PtrToStringAnsi(href);
//here we send all data to user event handlers
textFieldAnchorClickedEventHandler?.Invoke(this, e);
}
private void OnSelectionChanged(IntPtr textField, uint oldStart, uint oldEnd)
{
// no data to be sent to the user, as in NUI there is no event provide old values.
textFieldSelectionChangedEventHandler?.Invoke(this, EventArgs.Empty);
}
private void OnInputFiltered(IntPtr textField, InputFilterType type)
{
InputFilteredEventArgs e = new InputFilteredEventArgs();
// Populate all members of "e" (InputFilteredEventArgs) with real data
e.Type = type;
//here we send all data to user event handlers
textFieldInputFilteredEventHandler?.Invoke(this, e);
}
/// <summary>
/// The TextChanged event arguments.
/// </summary>
/// <since_tizen> 3 </since_tizen>
public class TextChangedEventArgs : EventArgs
{
private TextField textField;
/// <summary>
/// TextField.
/// </summary>
/// <since_tizen> 3 </since_tizen>
public TextField TextField
{
get
{
return textField;
}
set
{
textField = value;
}
}
}
/// <summary>
/// The MaxLengthReached event arguments.
/// </summary>
/// <since_tizen> 3 </since_tizen>
public class MaxLengthReachedEventArgs : EventArgs
{
private TextField textField;
/// <summary>
/// TextField.
/// </summary>
/// <since_tizen> 3 </since_tizen>
public TextField TextField
{
get
{
return textField;
}
set
{
textField = value;
}
}
}
}
}