91 lines
2.5 KiB
C#
91 lines
2.5 KiB
C#
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//---------------------------------------------------------------------------
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//
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// Copyright (C) Microsoft Corporation. All rights reserved.
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//
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//---------------------------------------------------------------------------
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using System;
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using System.Windows;
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using System.Windows.Controls;
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using EGC = ExtendedGrid.Microsoft.Windows.Controls;
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using MS.Internal;
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namespace ExtendedGrid.Microsoft.Windows.Controls
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{
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/// <summary>
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/// The separator used to indicate drop location during column header drag-drop
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/// </summary>
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internal class DataGridColumnDropSeparator : Separator
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{
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#region Constructors
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static DataGridColumnDropSeparator()
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{
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DefaultStyleKeyProperty.OverrideMetadata(
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typeof(EGC.DataGridColumnDropSeparator),
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new FrameworkPropertyMetadata(typeof(EGC.DataGridColumnDropSeparator)));
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WidthProperty.OverrideMetadata(
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typeof(EGC.DataGridColumnDropSeparator),
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new FrameworkPropertyMetadata(null, new CoerceValueCallback(OnCoerceWidth)));
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HeightProperty.OverrideMetadata(
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typeof(EGC.DataGridColumnDropSeparator),
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new FrameworkPropertyMetadata(null, new CoerceValueCallback(OnCoerceHeight)));
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}
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#endregion
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#region Static Methods
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private static object OnCoerceWidth(DependencyObject d, object baseValue)
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{
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double width = (double)baseValue;
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if (DoubleUtil.IsNaN(width))
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{
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return 2.0;
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}
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return baseValue;
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}
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private static object OnCoerceHeight(DependencyObject d, object baseValue)
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{
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double height = (double)baseValue;
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EGC.DataGridColumnDropSeparator separator = (EGC.DataGridColumnDropSeparator)d;
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if (separator._referenceHeader != null && DoubleUtil.IsNaN(height))
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{
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return separator._referenceHeader.ActualHeight;
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}
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return baseValue;
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}
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#endregion
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#region Properties
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internal EGC.DataGridColumnHeader ReferenceHeader
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{
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get
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{
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return _referenceHeader;
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}
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set
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{
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_referenceHeader = value;
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}
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}
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#endregion
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#region Data
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private EGC.DataGridColumnHeader _referenceHeader;
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#endregion
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}
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}
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