// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
namespace Tango.Scripting.Editors.Search
{
/// <summary>
/// A button that opens a drop-down menu when clicked.
/// </summary>
class DropDownButton : ButtonBase
{
public static readonly DependencyProperty DropDownContentProperty
= DependencyProperty.Register("DropDownContent", typeof(Popup),
typeof(DropDownButton), new FrameworkPropertyMetadata(null));
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Security", "CA2104:DoNotDeclareReadOnlyMutableReferenceTypes")]
protected static readonly DependencyPropertyKey IsDropDownContentOpenPropertyKey
= DependencyProperty.RegisterReadOnly("IsDropDownContentOpen", typeof(bool),
typeof(DropDownButton), new FrameworkPropertyMetadata(false));
public static readonly DependencyProperty IsDropDownContentOpenProperty = IsDropDownContentOpenPropertyKey.DependencyProperty;
static DropDownButton()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(DropDownButton), new FrameworkPropertyMetadata(typeof(DropDownButton)));
}
public Popup DropDownContent {
get { return (Popup)GetValue(DropDownContentProperty); }
set { SetValue(DropDownContentProperty, value); }
}
public bool IsDropDownContentOpen {
get { return (bool)GetValue(IsDropDownContentOpenProperty); }
protected set { SetValue(IsDropDownContentOpenPropertyKey, value); }
}
protected override void OnClick()
{
if (DropDownContent != null && !IsDropDownContentOpen) {
DropDownContent.Placement = PlacementMode.Bottom;
DropDownContent.PlacementTarget = this;
DropDownContent.IsOpen = true;
DropDownContent.Closed += DropDownContent_Closed;
this.IsDropDownContentOpen = true;
}
}
void DropDownContent_Closed(object sender, EventArgs e)
{
((Popup)sender).Closed -= DropDownContent_Closed;
this.IsDropDownContentOpen = false;
}
}
}
