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730 lines
22 KiB
730 lines
22 KiB
/*************************************************************************************
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Extended WPF Toolkit
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Copyright (C) 2007-2013 Xceed Software Inc.
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This program is provided to you under the terms of the Microsoft Public
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License (Ms-PL) as published at http://wpftoolkit.codeplex.com/license
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For more features, controls, and fast professional support,
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pick up the Plus Edition at http://xceed.com/wpf_toolkit
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Stay informed: follow @datagrid on Twitter or Like http://facebook.com/datagrids
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***********************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Windows;
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using System.Windows.Data;
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using System.Windows.Input;
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using Xceed.Wpf.Toolkit.Primitives;
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using System.Windows.Controls;
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using System.Linq;
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using Xceed.Wpf.Toolkit.Core.Primitives;
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namespace Xceed.Wpf.Toolkit
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{
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public class DateTimeUpDown : DateTimeUpDownBase<DateTime?>
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{
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#region Members
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private DateTime? _lastValidDate;
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#endregion
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#region Properties
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#region Format
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public static readonly DependencyProperty FormatProperty = DependencyProperty.Register( "Format", typeof( DateTimeFormat ), typeof( DateTimeUpDown ), new UIPropertyMetadata( DateTimeFormat.FullDateTime, OnFormatChanged ) );
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public DateTimeFormat Format
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{
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get
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{
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return ( DateTimeFormat )GetValue( FormatProperty );
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}
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set
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{
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SetValue( FormatProperty, value );
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}
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}
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private static void OnFormatChanged( DependencyObject o, DependencyPropertyChangedEventArgs e )
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{
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DateTimeUpDown dateTimeUpDown = o as DateTimeUpDown;
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if( dateTimeUpDown != null )
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dateTimeUpDown.OnFormatChanged( ( DateTimeFormat )e.OldValue, ( DateTimeFormat )e.NewValue );
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}
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protected virtual void OnFormatChanged( DateTimeFormat oldValue, DateTimeFormat newValue )
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{
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FormatUpdated();
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}
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#endregion //Format
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#region FormatString
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public static readonly DependencyProperty FormatStringProperty = DependencyProperty.Register( "FormatString", typeof( string ), typeof( DateTimeUpDown ), new UIPropertyMetadata( default( String ), OnFormatStringChanged ), IsFormatStringValid );
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public string FormatString
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{
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get
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{
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return ( string )GetValue( FormatStringProperty );
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}
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set
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{
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SetValue( FormatStringProperty, value );
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}
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}
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internal static bool IsFormatStringValid( object value )
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{
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try
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{
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// Test the format string if it is used.
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DateTime.MinValue.ToString( ( string )value, CultureInfo.CurrentCulture );
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}
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catch
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{
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return false;
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}
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return true;
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}
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private static void OnFormatStringChanged( DependencyObject o, DependencyPropertyChangedEventArgs e )
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{
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DateTimeUpDown dateTimeUpDown = o as DateTimeUpDown;
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if( dateTimeUpDown != null )
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dateTimeUpDown.OnFormatStringChanged( ( string )e.OldValue, ( string )e.NewValue );
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}
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protected virtual void OnFormatStringChanged( string oldValue, string newValue )
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{
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FormatUpdated();
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}
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#endregion //FormatString
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#endregion //Properties
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#region Constructors
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static DateTimeUpDown()
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{
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DefaultStyleKeyProperty.OverrideMetadata( typeof( DateTimeUpDown ), new FrameworkPropertyMetadata( typeof( DateTimeUpDown ) ) );
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MaximumProperty.OverrideMetadata( typeof( DateTimeUpDown ), new FrameworkPropertyMetadata( DateTime.MaxValue ) );
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MinimumProperty.OverrideMetadata( typeof( DateTimeUpDown ), new FrameworkPropertyMetadata( DateTime.MinValue ) );
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}
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public DateTimeUpDown()
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{
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}
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#endregion //Constructors
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#region Base Class Overrides
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public override bool CommitInput()
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{
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bool isSyncValid = this.SyncTextAndValueProperties( true, Text );
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_lastValidDate = this.Value;
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return isSyncValid;
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}
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protected override void OnCultureInfoChanged( CultureInfo oldValue, CultureInfo newValue )
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{
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FormatUpdated();
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}
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protected override void OnIncrement()
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{
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if( this.IsCurrentValueValid() )
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{
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if( Value.HasValue )
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UpdateDateTime( 1 );
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else
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Value = DefaultValue ?? DateTime.Now;
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}
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}
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protected override void OnDecrement()
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{
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if( this.IsCurrentValueValid() )
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{
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if( Value.HasValue )
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UpdateDateTime( -1 );
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else
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Value = DefaultValue ?? DateTime.Now;
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}
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}
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protected override void OnTextChanged( string previousValue, string currentValue )
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{
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if( !_processTextChanged )
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return;
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base.OnTextChanged( previousValue, currentValue );
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}
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protected override DateTime? ConvertTextToValue( string text )
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{
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if( string.IsNullOrEmpty( text ) )
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return null;
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DateTime result;
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this.TryParseDateTime( text, out result );
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if( this.ClipValueToMinMax )
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{
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return this.GetClippedMinMaxValue( result );
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}
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this.ValidateDefaultMinMax( result );
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return result;
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}
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protected override string ConvertValueToText()
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{
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if( Value == null )
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return string.Empty;
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return Value.Value.ToString( GetFormatString( Format ), CultureInfo );
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}
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protected override void SetValidSpinDirection()
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{
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ValidSpinDirections validDirections = ValidSpinDirections.None;
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if( !IsReadOnly )
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{
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if( this.IsLowerThan( this.Value, this.Maximum ) || !this.Value.HasValue )
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validDirections = validDirections | ValidSpinDirections.Increase;
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if( this.IsGreaterThan( this.Value, this.Minimum ) || !this.Value.HasValue )
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validDirections = validDirections | ValidSpinDirections.Decrease;
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}
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if( this.Spinner != null )
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this.Spinner.ValidSpinDirection = validDirections;
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}
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protected override void OnValueChanged( DateTime? oldValue, DateTime? newValue )
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{
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//whenever the value changes we need to parse out the value into out DateTimeInfo segments so we can keep track of the individual pieces
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//but only if it is not null
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if( newValue != null )
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ParseValueIntoDateTimeInfo();
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base.OnValueChanged( oldValue, newValue );
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if( !_isTextChangedFromUI )
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{
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_lastValidDate = newValue;
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}
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}
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protected override void RaiseValueChangedEvent( DateTime? oldValue, DateTime? newValue )
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{
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if( ( this.TemplatedParent is TimePicker )
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&& ( ( TimePicker )this.TemplatedParent ).TemplatedParent is DateTimePicker )
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return;
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base.RaiseValueChangedEvent( oldValue, newValue );
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}
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protected override bool IsCurrentValueValid()
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{
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DateTime result;
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if( string.IsNullOrEmpty( this.TextBox.Text ) )
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return true;
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return this.TryParseDateTime( this.TextBox.Text, out result );
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}
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#endregion //Base Class Overrides
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#region Methods
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public void SelectAll()
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{
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_fireSelectionChangedEvent = false;
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TextBox.SelectAll();
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_fireSelectionChangedEvent = true;
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}
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private void FormatUpdated()
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{
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InitializeDateTimeInfoList();
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if( Value != null )
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ParseValueIntoDateTimeInfo();
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// Update the Text representation of the value.
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_processTextChanged = false;
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this.SyncTextAndValueProperties( false, null );
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_processTextChanged = true;
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}
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protected override void InitializeDateTimeInfoList()
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{
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_dateTimeInfoList.Clear();
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_selectedDateTimeInfo = null;
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string format = GetFormatString( Format );
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if( string.IsNullOrEmpty( format ) )
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return;
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while( format.Length > 0 )
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{
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int elementLength = GetElementLengthByFormat( format );
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DateTimeInfo info = null;
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switch( format[ 0 ] )
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{
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case '"':
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case '\'':
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{
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int closingQuotePosition = format.IndexOf( format[ 0 ], 1 );
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info = new DateTimeInfo
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{
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IsReadOnly = true,
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Type = DateTimePart.Other,
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Length = 1,
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Content = format.Substring( 1, Math.Max( 1, closingQuotePosition - 1 ) )
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};
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elementLength = Math.Max( 1, closingQuotePosition + 1 );
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break;
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}
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case 'D':
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case 'd':
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{
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string d = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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d = "%" + d;
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if( elementLength > 2 )
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info = new DateTimeInfo
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{
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IsReadOnly = true,
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Type = DateTimePart.DayName,
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Format = d
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};
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else
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info = new DateTimeInfo
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{
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IsReadOnly = false,
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Type = DateTimePart.Day,
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Format = d
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};
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break;
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}
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case 'F':
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case 'f':
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{
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string f = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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f = "%" + f;
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info = new DateTimeInfo
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{
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IsReadOnly = false,
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Type = DateTimePart.Millisecond,
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Format = f
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};
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break;
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}
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case 'h':
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{
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string h = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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h = "%" + h;
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info = new DateTimeInfo
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{
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IsReadOnly = false,
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Type = DateTimePart.Hour12,
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Format = h
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};
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break;
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}
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case 'H':
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{
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string H = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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H = "%" + H;
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info = new DateTimeInfo
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{
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IsReadOnly = false,
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Type = DateTimePart.Hour24,
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Format = H
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};
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break;
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}
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case 'M':
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{
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string M = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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M = "%" + M;
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if( elementLength >= 3 )
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info = new DateTimeInfo
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{
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IsReadOnly = false,
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Type = DateTimePart.MonthName,
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Format = M
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};
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else
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info = new DateTimeInfo
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{
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IsReadOnly = false,
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Type = DateTimePart.Month,
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Format = M
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};
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break;
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}
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case 'S':
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case 's':
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{
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string s = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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s = "%" + s;
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info = new DateTimeInfo
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{
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IsReadOnly = false,
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Type = DateTimePart.Second,
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Format = s
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};
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break;
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}
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case 'T':
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case 't':
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{
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string t = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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t = "%" + t;
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info = new DateTimeInfo
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{
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IsReadOnly = false,
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Type = DateTimePart.AmPmDesignator,
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Format = t
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};
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break;
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}
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case 'Y':
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case 'y':
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{
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string y = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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y = "%" + y;
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info = new DateTimeInfo
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{
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IsReadOnly = false,
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Type = DateTimePart.Year,
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Format = y
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};
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break;
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}
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case '\\':
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{
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if( format.Length >= 2 )
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{
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info = new DateTimeInfo
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{
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IsReadOnly = true,
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Content = format.Substring( 1, 1 ),
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Length = 1,
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Type = DateTimePart.Other
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};
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elementLength = 2;
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}
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break;
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}
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case 'g':
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{
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string g = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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g = "%" + g;
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info = new DateTimeInfo
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{
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IsReadOnly = true,
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Type = DateTimePart.Period,
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Format = format.Substring( 0, elementLength )
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};
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break;
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}
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case 'm':
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{
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string m = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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m = "%" + m;
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info = new DateTimeInfo
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{
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IsReadOnly = false,
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Type = DateTimePart.Minute,
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Format = m
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};
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break;
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}
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case 'z':
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{
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string z = format.Substring( 0, elementLength );
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if( elementLength == 1 )
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z = "%" + z;
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info = new DateTimeInfo
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{
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IsReadOnly = true,
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Type = DateTimePart.TimeZone,
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Format = z
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};
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break;
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}
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default:
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{
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elementLength = 1;
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info = new DateTimeInfo
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{
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IsReadOnly = true,
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Length = 1,
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Content = format[ 0 ].ToString(),
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Type = DateTimePart.Other
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};
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break;
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}
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}
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_dateTimeInfoList.Add( info );
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format = format.Substring( elementLength );
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}
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}
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protected override bool IsLowerThan( DateTime? value1, DateTime? value2 )
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{
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if( value1 == null || value2 == null )
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return false;
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return ( value1.Value < value2.Value );
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}
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protected override bool IsGreaterThan( DateTime? value1, DateTime? value2 )
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{
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if( value1 == null || value2 == null )
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return false;
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return ( value1.Value > value2.Value );
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}
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private static int GetElementLengthByFormat( string format )
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{
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for( int i = 1; i < format.Length; i++ )
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{
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if( String.Compare( format[ i ].ToString(), format[ 0 ].ToString(), false ) != 0 )
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{
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return i;
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}
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}
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return format.Length;
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}
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private void ParseValueIntoDateTimeInfo()
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{
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string text = string.Empty;
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_dateTimeInfoList.ForEach( info =>
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{
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if( info.Format == null )
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{
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info.StartPosition = text.Length;
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info.Length = info.Content.Length;
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text += info.Content;
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}
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else
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{
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DateTime date = DateTime.Parse( Value.ToString() );
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info.StartPosition = text.Length;
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info.Content = date.ToString( info.Format, CultureInfo.DateTimeFormat );
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info.Length = info.Content.Length;
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text += info.Content;
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}
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} );
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}
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private string GetFormatString( DateTimeFormat dateTimeFormat )
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{
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switch( dateTimeFormat )
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{
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case DateTimeFormat.ShortDate:
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return CultureInfo.DateTimeFormat.ShortDatePattern;
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case DateTimeFormat.LongDate:
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return CultureInfo.DateTimeFormat.LongDatePattern;
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case DateTimeFormat.ShortTime:
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return CultureInfo.DateTimeFormat.ShortTimePattern;
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case DateTimeFormat.LongTime:
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return CultureInfo.DateTimeFormat.LongTimePattern;
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case DateTimeFormat.FullDateTime:
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return CultureInfo.DateTimeFormat.FullDateTimePattern;
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case DateTimeFormat.MonthDay:
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return CultureInfo.DateTimeFormat.MonthDayPattern;
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case DateTimeFormat.RFC1123:
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return CultureInfo.DateTimeFormat.RFC1123Pattern;
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case DateTimeFormat.SortableDateTime:
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return CultureInfo.DateTimeFormat.SortableDateTimePattern;
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case DateTimeFormat.UniversalSortableDateTime:
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return CultureInfo.DateTimeFormat.UniversalSortableDateTimePattern;
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case DateTimeFormat.YearMonth:
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return CultureInfo.DateTimeFormat.YearMonthPattern;
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case DateTimeFormat.Custom:
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{
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switch( this.FormatString )
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{
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case "d":
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return CultureInfo.DateTimeFormat.ShortDatePattern;
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case "t":
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return CultureInfo.DateTimeFormat.ShortTimePattern;
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case "T":
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return CultureInfo.DateTimeFormat.LongTimePattern;
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case "D":
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return CultureInfo.DateTimeFormat.LongDatePattern;
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case "f":
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return CultureInfo.DateTimeFormat.LongDatePattern + " " + CultureInfo.DateTimeFormat.ShortTimePattern;
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case "F":
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return CultureInfo.DateTimeFormat.FullDateTimePattern;
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case "g":
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return CultureInfo.DateTimeFormat.ShortDatePattern + " " + CultureInfo.DateTimeFormat.ShortTimePattern;
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case "G":
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return CultureInfo.DateTimeFormat.ShortDatePattern + " " + CultureInfo.DateTimeFormat.LongTimePattern;
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case "m":
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return CultureInfo.DateTimeFormat.MonthDayPattern;
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case "y":
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return CultureInfo.DateTimeFormat.YearMonthPattern;
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case "r":
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return CultureInfo.DateTimeFormat.RFC1123Pattern;
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case "s":
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return CultureInfo.DateTimeFormat.SortableDateTimePattern;
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case "u":
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return CultureInfo.DateTimeFormat.UniversalSortableDateTimePattern;
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default:
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return FormatString;
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}
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}
|
|
default:
|
|
throw new ArgumentException( "Not a supported format" );
|
|
}
|
|
}
|
|
|
|
private void UpdateDateTime( int value )
|
|
{
|
|
_fireSelectionChangedEvent = false;
|
|
DateTimeInfo info = _selectedDateTimeInfo;
|
|
|
|
//this only occurs when the user manually type in a value for the Value Property
|
|
if( info == null )
|
|
info = _dateTimeInfoList[ 0 ];
|
|
|
|
DateTime? result = null;
|
|
|
|
try
|
|
{
|
|
switch( info.Type )
|
|
{
|
|
case DateTimePart.Year:
|
|
{
|
|
result = ( ( DateTime )Value ).AddYears( value );
|
|
break;
|
|
}
|
|
case DateTimePart.Month:
|
|
case DateTimePart.MonthName:
|
|
{
|
|
result = ( ( DateTime )Value ).AddMonths( value );
|
|
break;
|
|
}
|
|
case DateTimePart.Day:
|
|
case DateTimePart.DayName:
|
|
{
|
|
result = ( ( DateTime )Value ).AddDays( value );
|
|
break;
|
|
}
|
|
case DateTimePart.Hour12:
|
|
case DateTimePart.Hour24:
|
|
{
|
|
result = ( ( DateTime )Value ).AddHours( value );
|
|
break;
|
|
}
|
|
case DateTimePart.Minute:
|
|
{
|
|
result = ( ( DateTime )Value ).AddMinutes( value );
|
|
break;
|
|
}
|
|
case DateTimePart.Second:
|
|
{
|
|
result = ( ( DateTime )Value ).AddSeconds( value );
|
|
break;
|
|
}
|
|
case DateTimePart.Millisecond:
|
|
{
|
|
result = ( ( DateTime )Value ).AddMilliseconds( value );
|
|
break;
|
|
}
|
|
case DateTimePart.AmPmDesignator:
|
|
{
|
|
result = ( ( DateTime )Value ).AddHours( value * 12 );
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
catch
|
|
{
|
|
//this can occur if the date/time = 1/1/0001 12:00:00 AM which is the smallest date allowed.
|
|
//I could write code that would validate the date each and everytime but I think that it would be more
|
|
//efficient if I just handle the edge case and allow an exeption to occur and swallow it instead.
|
|
}
|
|
|
|
this.Value = this.CoerceValueMinMax( result );
|
|
|
|
//we loose our selection when the Value is set so we need to reselect it without firing the selection changed event
|
|
TextBox.Select( info.StartPosition, info.Length );
|
|
_fireSelectionChangedEvent = true;
|
|
}
|
|
|
|
private bool TryParseDateTime( string text, out DateTime result )
|
|
{
|
|
bool isValid = false;
|
|
result = DateTime.Now;
|
|
|
|
DateTime current = this.Value.HasValue ? this.Value.Value : DateTime.Parse( DateTime.Now.ToString(), this.CultureInfo.DateTimeFormat );
|
|
isValid = DateTimeParser.TryParse( text, this.GetFormatString( Format ), current, this.CultureInfo, out result );
|
|
|
|
if( !isValid )
|
|
{
|
|
isValid = DateTime.TryParseExact( text, this.GetFormatString( this.Format ), this.CultureInfo, DateTimeStyles.None, out result );
|
|
}
|
|
|
|
if( !isValid )
|
|
result = ( _lastValidDate != null ) ? _lastValidDate.Value : current;
|
|
|
|
return isValid;
|
|
}
|
|
|
|
#endregion //Methods
|
|
}
|
|
}
|
|
|