File size: 4,433 Bytes
8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | // Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Windows;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows.Threading;
namespace Microsoft.Management.UI.Internal
{
/// <content>
/// Partial class implementation for PopupControlButton control.
/// </content>
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.MSInternal", "CA903:InternalNamespaceShouldNotContainPublicTypes")]
public partial class PopupControlButton : ExpanderButton
{
private bool isClickInProgress = false;
/// <summary>
/// Tooltip to show to expand.
/// </summary>
protected override string ExpandToolTip
{
get { return XamlLocalizableResources.AutoResXGen_ManagementList2_ToolTip_132; }
}
/// <summary>
/// Constructs an instance of PopupControlButton.
/// </summary>
public PopupControlButton()
{
// nothing
}
/// <summary>
/// Called when the IsChecked property becomes true.
/// </summary>
/// <param name="e">The event data for the Checked event.</param>
protected override void OnChecked(RoutedEventArgs e)
{
base.OnChecked(e);
this.UpdateIsPopupOpen();
}
/// <summary>
/// Called when the IsChecked property becomes false.
/// </summary>
/// <param name="e">The event data for the Unchecked event.</param>
protected override void OnUnchecked(RoutedEventArgs e)
{
base.OnUnchecked(e);
this.UpdateIsPopupOpen();
}
private void UpdateIsPopupOpen()
{
this.IsPopupOpen = this.IsChecked.GetValueOrDefault();
}
/// <summary>
/// Invoked when an unhandled PreviewMouseLeftButtonUp routed event reaches an element in its route that is derived from this class. Implement this method to add class handling for this event.
/// </summary>
/// <param name="e">The MouseButtonEventArgs that contains the event data. The event data reports that the left mouse button was released.</param>
protected override void OnPreviewMouseLeftButtonUp(MouseButtonEventArgs e)
{
////
// If the mouse is captured then we need to finish updating state after the current event it processed.
////
if (this.IsMouseCaptured && this.isClickInProgress)
{
this.isClickInProgress = false;
this.ReleaseMouseCapture();
this.Dispatcher.BeginInvoke(
new UpdateIsCheckedDelegate(this.UpdateIsChecked),
DispatcherPriority.Input,
null);
}
base.OnPreviewMouseLeftButtonUp(e);
}
private delegate void UpdateIsCheckedDelegate();
partial void OnIsPopupOpenChangedImplementation(PropertyChangedEventArgs<bool> e)
{
////
// If it looks like the button is in the act of being pressed,
// then we don't want to update the IsChecked since the button
// push will do it.
//
// However we do need to handle the case where the mouse down is on the
// button, but mouse up isn't.
//
////
if (Mouse.PrimaryDevice.LeftButton == MouseButtonState.Pressed && this.IsPopupOpen == false)
{
if (this.GetIsMouseReallyOver())
{
this.isClickInProgress = true;
this.CaptureMouse();
}
}
if (this.isClickInProgress == false)
{
this.UpdateIsChecked();
}
}
private bool GetIsMouseReallyOver()
{
Point pos = Mouse.PrimaryDevice.GetPosition(this);
if ((pos.X >= 0) && (pos.X <= ActualWidth) && (pos.Y >= 0) && (pos.Y <= ActualHeight))
{
return true;
}
return false;
}
private void UpdateIsChecked()
{
this.IsChecked = this.IsPopupOpen;
}
}
}
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