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// --------------------------------------------------------------------------------------------------------------------
// <copyright file="DropButton.cs" company="HandBrake Project (http://handbrake.fr)">
// This file is part of the HandBrake source code - It may be used under the terms of the GNU General Public License.
// </copyright>
// <summary>
// Defines the DropDownButton type.
// </summary>
// --------------------------------------------------------------------------------------------------------------------
namespace HandBrakeWPF.Controls.DropButton
{
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Data;
/// <summary>
/// The drop down button.
/// </summary>
public class DropButton : ToggleButton
{
/// <summary>
/// The drop down property.
/// </summary>
public static readonly DependencyProperty DropDownProperty =
DependencyProperty.Register("DropDown",
typeof(ContextMenu),
typeof(DropButton),
new UIPropertyMetadata(null));
/// <summary>
/// Initializes a new instance of the <see cref="DropButton"/> class.
/// </summary>
public DropButton()
{
// Bind the ToogleButton.IsChecked property to the drop-down's IsOpen property
Binding binding = new Binding("DropDown.IsOpen") { Source = this };
this.SetBinding(IsCheckedProperty, binding);
}
/// <summary>
/// Gets or sets the drop down.
/// </summary>
public ContextMenu DropDown
{
get { return (ContextMenu)this.GetValue(DropDownProperty); }
set { this.SetValue(DropDownProperty, value); }
}
/// <summary>
/// Handle the users click on the button.
/// </summary>
protected override void OnClick()
{
if (this.DropDown != null)
{
// If there is a drop-down assigned to this button, then position and display it
this.DropDown.PlacementTarget = this;
this.DropDown.Placement = PlacementMode.Bottom;
this.DropDown.IsOpen = true;
}
}
}
}
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