132 lines
4.3 KiB
C#
132 lines
4.3 KiB
C#
// Copyright (c) Microsoft Corporation.
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// Licensed under the MIT License.
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using System;
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using System.ComponentModel;
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using System.Diagnostics;
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using System.Windows;
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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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namespace Microsoft.Management.UI.Internal
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{
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/// <content>
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/// Partial class implementation for PopupControlButton control.
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/// </content>
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[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.MSInternal", "CA903:InternalNamespaceShouldNotContainPublicTypes")]
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public partial class PopupControlButton : ExpanderButton
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{
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private bool isClickInProgress = false;
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/// <summary>
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/// Tooltip to show to expand.
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/// </summary>
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protected override string ExpandToolTip
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{
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get { return XamlLocalizableResources.AutoResXGen_ManagementList2_ToolTip_132; }
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}
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/// <summary>
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/// Constructs an instance of PopupControlButton.
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/// </summary>
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public PopupControlButton()
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{
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// nothing
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}
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/// <summary>
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/// Called when the IsChecked property becomes true.
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/// </summary>
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/// <param name="e">The event data for the Checked event.</param>
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protected override void OnChecked(RoutedEventArgs e)
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{
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base.OnChecked(e);
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this.UpdateIsPopupOpen();
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}
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/// <summary>
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/// Called when the IsChecked property becomes false.
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/// </summary>
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/// <param name="e">The event data for the Unchecked event.</param>
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protected override void OnUnchecked(RoutedEventArgs e)
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{
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base.OnUnchecked(e);
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this.UpdateIsPopupOpen();
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}
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private void UpdateIsPopupOpen()
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{
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this.IsPopupOpen = this.IsChecked.GetValueOrDefault();
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}
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/// <summary>
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/// 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.
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/// </summary>
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/// <param name="e">The MouseButtonEventArgs that contains the event data. The event data reports that the left mouse button was released.</param>
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protected override void OnPreviewMouseLeftButtonUp(MouseButtonEventArgs e)
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{
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////
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// If the mouse is captured then we need to finish updating state after the current event it processed.
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////
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if (this.IsMouseCaptured && this.isClickInProgress)
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{
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this.isClickInProgress = false;
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this.ReleaseMouseCapture();
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this.Dispatcher.BeginInvoke(
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new UpdateIsCheckedDelegate(this.UpdateIsChecked),
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DispatcherPriority.Input,
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null);
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}
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base.OnPreviewMouseLeftButtonUp(e);
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}
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private delegate void UpdateIsCheckedDelegate();
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partial void OnIsPopupOpenChangedImplementation(PropertyChangedEventArgs<bool> e)
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{
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////
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// If it looks like the button is in the act of being pressed,
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// then we don't want to update the IsChecked since the button
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// push will do it.
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//
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// However we do need to handle the case where the mouse down is on the
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// button, but mouse up isn't.
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//
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////
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if (Mouse.PrimaryDevice.LeftButton == MouseButtonState.Pressed && this.IsPopupOpen == false)
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{
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if (this.GetIsMouseReallyOver())
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{
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this.isClickInProgress = true;
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this.CaptureMouse();
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}
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}
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if (this.isClickInProgress == false)
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{
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this.UpdateIsChecked();
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}
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}
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private bool GetIsMouseReallyOver()
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{
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Point pos = Mouse.PrimaryDevice.GetPosition(this);
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if ((pos.X >= 0) && (pos.X <= ActualWidth) && (pos.Y >= 0) && (pos.Y <= ActualHeight))
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{
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return true;
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}
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return false;
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}
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private void UpdateIsChecked()
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{
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this.IsChecked = this.IsPopupOpen;
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}
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}
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}
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