Adjust project structure
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Controls.Primitives;
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using System.Windows.Input;
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using System.Windows.Threading;
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using HandyControl.Data;
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using HandyControl.Interactivity;
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namespace HandyControl.Controls
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{
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/// <summary>
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/// 时间日期选择器
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/// </summary>
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[TemplatePart(Name = ElementRoot, Type = typeof(Grid))]
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[TemplatePart(Name = ElementTextBox, Type = typeof(WatermarkTextBox))]
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[TemplatePart(Name = ElementButton, Type = typeof(Button))]
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[TemplatePart(Name = ElementPopup, Type = typeof(Popup))]
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public class DateTimePicker : Control, IDataInput
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{
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#region Constants
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private const string ElementRoot = "PART_Root";
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private const string ElementTextBox = "PART_TextBox";
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private const string ElementButton = "PART_Button";
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private const string ElementPopup = "PART_Popup";
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#endregion Constants
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#region Data
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private CalendarWithClock _calendarWithClock;
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private string _defaultText;
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private ButtonBase _dropDownButton;
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private Popup _popUp;
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private bool _disablePopupReopen;
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private WatermarkTextBox _textBox;
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private IDictionary<DependencyProperty, bool> _isHandlerSuspended;
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private DateTime? _originalSelectedDateTime;
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#endregion Data
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#region Public Events
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public static readonly RoutedEvent SelectedDateTimeChangedEvent =
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EventManager.RegisterRoutedEvent("SelectedDateTimeChanged", RoutingStrategy.Direct,
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typeof(EventHandler<FunctionEventArgs<DateTime?>>), typeof(DateTimePicker));
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public event EventHandler<FunctionEventArgs<DateTime?>> SelectedDateTimeChanged
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{
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add => AddHandler(SelectedDateTimeChangedEvent, value);
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remove => RemoveHandler(SelectedDateTimeChangedEvent, value);
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}
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public event RoutedEventHandler PickerClosed;
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public event RoutedEventHandler PickerOpened;
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#endregion Public Events
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static DateTimePicker()
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{
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EventManager.RegisterClassHandler(typeof(DateTimePicker), GotFocusEvent, new RoutedEventHandler(OnGotFocus));
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KeyboardNavigation.TabNavigationProperty.OverrideMetadata(typeof(DateTimePicker), new FrameworkPropertyMetadata(KeyboardNavigationMode.Once));
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KeyboardNavigation.IsTabStopProperty.OverrideMetadata(typeof(DateTimePicker), new FrameworkPropertyMetadata(false));
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}
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public DateTimePicker()
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{
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InitCalendarWithClock();
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CommandBindings.Add(new CommandBinding(ControlCommands.Clear, (s, e) =>
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{
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ClearValue(SelectedDateTimeProperty);
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ClearValue(TextProperty);
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_textBox.Text = string.Empty;
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}));
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}
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#region Public Properties
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public static readonly DependencyProperty DateTimeFormatProperty = DependencyProperty.Register(
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"DateTimeFormat", typeof(string), typeof(DateTimePicker), new PropertyMetadata("yyyy-MM-dd HH:mm:ss"));
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public string DateTimeFormat
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{
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get => (string) GetValue(DateTimeFormatProperty);
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set => SetValue(DateTimeFormatProperty, value);
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}
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public static readonly DependencyProperty ClockStyleProperty = DependencyProperty.Register(
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"ClockStyle", typeof(Style), typeof(DateTimePicker), new PropertyMetadata(default(Style)));
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public Style ClockStyle
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{
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get => (Style) GetValue(ClockStyleProperty);
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set => SetValue(ClockStyleProperty, value);
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}
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public static readonly DependencyProperty CalendarStyleProperty = DependencyProperty.Register(
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"CalendarStyle", typeof(Style), typeof(DateTimePicker), new PropertyMetadata(default(Style)));
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public Style CalendarStyle
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{
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get => (Style) GetValue(CalendarStyleProperty);
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set => SetValue(CalendarStyleProperty, value);
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}
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public static readonly DependencyProperty DisplayDateTimeProperty = DependencyProperty.Register(
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"DisplayDateTime", typeof(DateTime), typeof(DateTimePicker), new FrameworkPropertyMetadata(DateTime.Now, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, null, CoerceDisplayDateTime));
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private static object CoerceDisplayDateTime(DependencyObject d, object value)
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{
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var dp = (DateTimePicker)d;
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dp._calendarWithClock.DisplayDateTime = (DateTime)value;
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return dp._calendarWithClock.DisplayDateTime;
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}
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public DateTime DisplayDateTime
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{
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get => (DateTime) GetValue(DisplayDateTimeProperty);
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set => SetValue(DisplayDateTimeProperty, value);
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}
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public static readonly DependencyProperty IsDropDownOpenProperty = DependencyProperty.Register(
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"IsDropDownOpen", typeof(bool), typeof(DateTimePicker), new FrameworkPropertyMetadata(ValueBoxes.FalseBox, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, OnIsDropDownOpenChanged, OnCoerceIsDropDownOpen));
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private static object OnCoerceIsDropDownOpen(DependencyObject d, object baseValue) => d is DateTimePicker dp && !dp.IsEnabled ? false : baseValue;
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private static void OnIsDropDownOpenChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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var dp = d as DateTimePicker;
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var newValue = (bool)e.NewValue;
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if (dp?._popUp != null && dp._popUp.IsOpen != newValue)
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{
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dp._popUp.IsOpen = newValue;
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if (newValue)
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{
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dp._originalSelectedDateTime = dp.SelectedDateTime;
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dp.Dispatcher.BeginInvoke(DispatcherPriority.Input, (Action)delegate
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{
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dp._calendarWithClock.Focus();
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});
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}
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}
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}
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public bool IsDropDownOpen
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{
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get => (bool) GetValue(IsDropDownOpenProperty);
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set => SetValue(IsDropDownOpenProperty, value);
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}
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public static readonly DependencyProperty SelectedDateTimeProperty = DependencyProperty.Register(
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"SelectedDateTime", typeof(DateTime?), typeof(DateTimePicker), new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, OnSelectedDateTimeChanged, CoerceSelectedDateTime));
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private static object CoerceSelectedDateTime(DependencyObject d, object value)
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{
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var dp = (DateTimePicker)d;
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dp._calendarWithClock.SelectedDateTime = (DateTime?)value;
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return dp._calendarWithClock.SelectedDateTime;
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}
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private static void OnSelectedDateTimeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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if (!(d is DateTimePicker dp)) return;
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if (dp.SelectedDateTime.HasValue)
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{
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var time = dp.SelectedDateTime.Value;
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dp.SetTextInternal(dp.DateTimeToString(time));
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}
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dp.RaiseEvent(new FunctionEventArgs<DateTime?>(SelectedDateTimeChangedEvent, dp)
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{
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Info = dp.SelectedDateTime
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});
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}
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public DateTime? SelectedDateTime
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{
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get => (DateTime?) GetValue(SelectedDateTimeProperty);
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set => SetValue(SelectedDateTimeProperty, value);
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}
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public static readonly DependencyProperty TextProperty = DependencyProperty.Register(
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"Text", typeof(string), typeof(DateTimePicker), new FrameworkPropertyMetadata(string.Empty, OnTextChanged));
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private static void OnTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
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{
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if (d is DateTimePicker dp && !dp.IsHandlerSuspended(TextProperty))
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{
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if (e.NewValue is string newValue)
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{
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if (dp._textBox != null)
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{
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dp._textBox.Text = newValue;
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}
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else
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{
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dp._defaultText = newValue;
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}
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dp.SetSelectedDateTime();
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}
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else
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{
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dp.SetValueNoCallback(SelectedDateTimeProperty, null);
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}
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}
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}
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public string Text
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{
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get => (string) GetValue(TextProperty);
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set => SetValue(TextProperty, value);
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}
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/// <summary>
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/// Sets the local Text property without breaking bindings
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/// </summary>
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/// <param name="value"></param>
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private void SetTextInternal(string value)
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{
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SetCurrentValue(TextProperty, value);
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}
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public Func<string, OperationResult<bool>> VerifyFunc { get; set; }
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public static readonly DependencyProperty IsErrorProperty = DependencyProperty.Register(
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"IsError", typeof(bool), typeof(DateTimePicker), new PropertyMetadata(ValueBoxes.FalseBox));
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public bool IsError
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{
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get => (bool) GetValue(IsErrorProperty);
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set => SetValue(IsErrorProperty, value);
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}
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public static readonly DependencyProperty ErrorStrProperty = DependencyProperty.Register(
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"ErrorStr", typeof(string), typeof(DateTimePicker), new PropertyMetadata(default(string)));
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public string ErrorStr
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{
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get => (string) GetValue(ErrorStrProperty);
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set => SetValue(ErrorStrProperty, value);
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}
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public static readonly DependencyProperty TextTypeProperty = DependencyProperty.Register(
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"TextType", typeof(TextType), typeof(DateTimePicker), new PropertyMetadata(default(TextType)));
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public TextType TextType
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{
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get => (TextType) GetValue(TextTypeProperty);
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set => SetValue(TextTypeProperty, value);
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}
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public static readonly DependencyProperty ShowClearButtonProperty = DependencyProperty.Register(
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"ShowClearButton", typeof(bool), typeof(DateTimePicker), new PropertyMetadata(ValueBoxes.FalseBox));
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public bool ShowClearButton
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{
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get => (bool) GetValue(ShowClearButtonProperty);
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set => SetValue(ShowClearButtonProperty, value);
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}
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#endregion
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#region Public Methods
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public override void OnApplyTemplate()
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{
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if (DesignerProperties.GetIsInDesignMode(this)) return;
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if (_popUp != null)
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{
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_popUp.PreviewMouseLeftButtonDown -= PopUp_PreviewMouseLeftButtonDown;
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_popUp.Opened -= PopUp_Opened;
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_popUp.Closed -= PopUp_Closed;
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_popUp.Child = null;
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}
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if (_dropDownButton != null)
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{
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_dropDownButton.Click -= DropDownButton_Click;
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_dropDownButton.MouseLeave -= DropDownButton_MouseLeave;
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}
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if (_textBox != null)
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{
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_textBox.KeyDown -= TextBox_KeyDown;
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_textBox.TextChanged -= TextBox_TextChanged;
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_textBox.LostFocus -= TextBox_LostFocus;
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}
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base.OnApplyTemplate();
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_popUp = GetTemplateChild(ElementPopup) as Popup;
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_dropDownButton = GetTemplateChild(ElementButton) as Button;
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_textBox = GetTemplateChild(ElementTextBox) as WatermarkTextBox;
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CheckNull();
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_popUp.PreviewMouseLeftButtonDown += PopUp_PreviewMouseLeftButtonDown;
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_popUp.Opened += PopUp_Opened;
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_popUp.Closed += PopUp_Closed;
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_popUp.Child = _calendarWithClock;
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if (IsDropDownOpen)
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{
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_popUp.IsOpen = true;
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}
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_dropDownButton.Click += DropDownButton_Click;
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_dropDownButton.MouseLeave += DropDownButton_MouseLeave;
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if (SelectedDateTime == null)
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{
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_textBox.Text = DateTime.Now.ToString(DateTimeFormat);
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}
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_textBox.KeyDown += TextBox_KeyDown;
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_textBox.TextChanged += TextBox_TextChanged;
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_textBox.LostFocus += TextBox_LostFocus;
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if (SelectedDateTime == null)
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{
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if (!string.IsNullOrEmpty(_defaultText))
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{
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_textBox.Text = _defaultText;
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SetSelectedDateTime();
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}
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}
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else
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{
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_textBox.Text = DateTimeToString(SelectedDateTime.Value);
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}
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if (_originalSelectedDateTime == null)
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{
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_originalSelectedDateTime = DateTime.Now;
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}
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SetCurrentValue(DisplayDateTimeProperty, _originalSelectedDateTime);
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}
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public virtual bool VerifyData()
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{
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OperationResult<bool> result;
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if (VerifyFunc != null)
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{
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result = VerifyFunc.Invoke(Text);
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}
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else
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{
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if (!string.IsNullOrEmpty(Text))
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{
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result = OperationResult.Success();
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}
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else if (InfoElement.GetNecessary(this))
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{
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result = OperationResult.Failed(Properties.Langs.Lang.IsNecessary);
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}
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else
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{
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result = OperationResult.Success();
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}
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}
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IsError = !result.Data;
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ErrorStr = result.Message;
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return result.Data;
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}
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public override string ToString() => SelectedDateTime?.ToString(DateTimeFormat) ?? string.Empty;
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#endregion
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#region Protected Methods
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protected virtual void OnPickerClosed(RoutedEventArgs e)
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{
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var handler = PickerClosed;
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handler?.Invoke(this, e);
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}
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protected virtual void OnPickerOpened(RoutedEventArgs e)
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{
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var handler = PickerOpened;
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handler?.Invoke(this, e);
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}
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#endregion Protected Methods
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#region Private Methods
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private void CheckNull()
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{
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if (_dropDownButton == null || _popUp == null || _textBox == null)
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throw new Exception();
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}
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private void InitCalendarWithClock()
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{
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_calendarWithClock = new CalendarWithClock
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{
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ShowConfirmButton = true
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};
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_calendarWithClock.SelectedDateTimeChanged += CalendarWithClock_SelectedDateTimeChanged;
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_calendarWithClock.Confirmed += CalendarWithClock_Confirmed;
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}
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private void CalendarWithClock_Confirmed() => TogglePopUp();
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private void CalendarWithClock_SelectedDateTimeChanged(object sender, FunctionEventArgs<DateTime?> e) => SelectedDateTime = e.Info;
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private void TextBox_LostFocus(object sender, RoutedEventArgs e)
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{
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SetSelectedDateTime();
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}
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private void SetIsHandlerSuspended(DependencyProperty property, bool value)
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{
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if (value)
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{
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if (_isHandlerSuspended == null)
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{
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_isHandlerSuspended = new Dictionary<DependencyProperty, bool>(2);
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}
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_isHandlerSuspended[property] = true;
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}
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else
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{
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_isHandlerSuspended?.Remove(property);
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}
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}
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private void SetValueNoCallback(DependencyProperty property, object value)
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{
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SetIsHandlerSuspended(property, true);
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try
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{
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SetCurrentValue(property, value);
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}
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finally
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{
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SetIsHandlerSuspended(property, false);
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}
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}
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private void TextBox_TextChanged(object sender, TextChangedEventArgs e)
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{
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SetValueNoCallback(TextProperty, _textBox.Text);
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VerifyData();
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}
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private bool ProcessDateTimePickerKey(KeyEventArgs e)
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{
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switch (e.Key)
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{
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case Key.System:
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{
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switch (e.SystemKey)
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{
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case Key.Down:
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{
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if ((Keyboard.Modifiers & ModifierKeys.Alt) == ModifierKeys.Alt)
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{
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TogglePopUp();
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return true;
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}
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break;
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}
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}
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break;
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}
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case Key.Enter:
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{
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SetSelectedDateTime();
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return true;
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}
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}
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return false;
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}
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private void TextBox_KeyDown(object sender, KeyEventArgs e)
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{
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e.Handled = ProcessDateTimePickerKey(e) || e.Handled;
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}
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private void DropDownButton_MouseLeave(object sender, MouseEventArgs e)
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{
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_disablePopupReopen = false;
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}
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private bool IsHandlerSuspended(DependencyProperty property)
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{
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return _isHandlerSuspended != null && _isHandlerSuspended.ContainsKey(property);
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}
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private void PopUp_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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if (sender is Popup popup && !popup.StaysOpen)
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{
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if (_dropDownButton?.InputHitTest(e.GetPosition(_dropDownButton)) != null)
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{
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_disablePopupReopen = true;
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}
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}
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}
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private void PopUp_Opened(object sender, EventArgs e)
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{
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if (!IsDropDownOpen)
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{
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SetCurrentValue(IsDropDownOpenProperty, ValueBoxes.TrueBox);
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}
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_calendarWithClock?.MoveFocus(new TraversalRequest(FocusNavigationDirection.First));
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OnPickerOpened(new RoutedEventArgs());
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}
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private void PopUp_Closed(object sender, EventArgs e)
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{
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if (IsDropDownOpen)
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{
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SetCurrentValue(IsDropDownOpenProperty, ValueBoxes.FalseBox);
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}
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if (_calendarWithClock.IsKeyboardFocusWithin)
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{
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MoveFocus(new TraversalRequest(FocusNavigationDirection.First));
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}
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OnPickerClosed(new RoutedEventArgs());
|
||||
}
|
||||
|
||||
private void DropDownButton_Click(object sender, RoutedEventArgs e) => TogglePopUp();
|
||||
|
||||
private void TogglePopUp()
|
||||
{
|
||||
if (IsDropDownOpen)
|
||||
{
|
||||
SetCurrentValue(IsDropDownOpenProperty, ValueBoxes.FalseBox);
|
||||
}
|
||||
else
|
||||
{
|
||||
if (_disablePopupReopen)
|
||||
{
|
||||
_disablePopupReopen = false;
|
||||
}
|
||||
else
|
||||
{
|
||||
SetSelectedDateTime();
|
||||
SetCurrentValue(IsDropDownOpenProperty, ValueBoxes.TrueBox);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private void SafeSetText(string s)
|
||||
{
|
||||
if (string.Compare(Text, s, StringComparison.Ordinal) != 0)
|
||||
{
|
||||
SetCurrentValue(TextProperty, s);
|
||||
}
|
||||
}
|
||||
|
||||
private DateTime? ParseText(string text)
|
||||
{
|
||||
try
|
||||
{
|
||||
return DateTime.Parse(text);
|
||||
}
|
||||
catch
|
||||
{
|
||||
// ignored
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
private DateTime? SetTextBoxValue(string s)
|
||||
{
|
||||
if (string.IsNullOrEmpty(s))
|
||||
{
|
||||
SafeSetText(s);
|
||||
return SelectedDateTime;
|
||||
}
|
||||
|
||||
var d = ParseText(s);
|
||||
|
||||
if (d != null)
|
||||
{
|
||||
SafeSetText(DateTimeToString((DateTime)d));
|
||||
return d;
|
||||
}
|
||||
|
||||
if (SelectedDateTime != null)
|
||||
{
|
||||
var newtext = DateTimeToString(SelectedDateTime.Value);
|
||||
SafeSetText(newtext);
|
||||
return SelectedDateTime;
|
||||
}
|
||||
SafeSetText(DateTimeToString(DisplayDateTime));
|
||||
return DisplayDateTime;
|
||||
}
|
||||
|
||||
private void SetSelectedDateTime()
|
||||
{
|
||||
if (_textBox != null)
|
||||
{
|
||||
if (!string.IsNullOrEmpty(_textBox.Text))
|
||||
{
|
||||
var s = _textBox.Text;
|
||||
|
||||
if (SelectedDateTime != null)
|
||||
{
|
||||
var selectedTime = DateTimeToString(SelectedDateTime.Value);
|
||||
|
||||
if (string.Compare(selectedTime, s, StringComparison.Ordinal) == 0)
|
||||
{
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
var d = SetTextBoxValue(s);
|
||||
if (!SelectedDateTime.Equals(d))
|
||||
{
|
||||
SetCurrentValue(SelectedDateTimeProperty, d);
|
||||
SetCurrentValue(DisplayDateTimeProperty, d);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (SelectedDateTime.HasValue)
|
||||
{
|
||||
SetCurrentValue(SelectedDateTimeProperty, null);
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
var d = SetTextBoxValue(_defaultText);
|
||||
if (!SelectedDateTime.Equals(d))
|
||||
{
|
||||
SetCurrentValue(SelectedDateTimeProperty, d);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private string DateTimeToString(DateTime d) => d.ToString(DateTimeFormat);
|
||||
|
||||
private static void OnGotFocus(object sender, RoutedEventArgs e)
|
||||
{
|
||||
var picker = (DateTimePicker)sender;
|
||||
if (!e.Handled && picker._textBox != null)
|
||||
{
|
||||
if (Equals(e.OriginalSource, picker))
|
||||
{
|
||||
picker._textBox.Focus();
|
||||
e.Handled = true;
|
||||
}
|
||||
else if (Equals(e.OriginalSource, picker._textBox))
|
||||
{
|
||||
picker._textBox.SelectAll();
|
||||
e.Handled = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#endregion
|
||||
}
|
||||
}
|
||||
Reference in new issue
Block a user