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// 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.Collections.ObjectModel;
using System.ComponentModel;
using System.Globalization;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
namespace Tango.Scripting.Editors.CodeCompletion
{
/// <summary>
/// Represents a text between "Up" and "Down" buttons.
/// </summary>
public class OverloadViewer : Control
{
static OverloadViewer()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(OverloadViewer),
new FrameworkPropertyMetadata(typeof(OverloadViewer)));
}
/// <summary>
/// The text property.
/// </summary>
public static readonly DependencyProperty TextProperty =
DependencyProperty.Register("Text", typeof(string), typeof(OverloadViewer));
/// <summary>
/// Gets/Sets the text between the Up and Down buttons.
/// </summary>
public string Text {
get { return (string)GetValue(TextProperty); }
set { SetValue(TextProperty, value); }
}
/// <inheritdoc/>
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
Button upButton = (Button)this.Template.FindName("PART_UP", this);
upButton.Click += (sender, e) => {
e.Handled = true;
ChangeIndex(-1);
};
Button downButton = (Button)this.Template.FindName("PART_DOWN", this);
downButton.Click += (sender, e) => {
e.Handled = true;
ChangeIndex(+1);
};
}
/// <summary>
/// The ItemProvider property.
/// </summary>
public static readonly DependencyProperty ProviderProperty =
DependencyProperty.Register("Provider", typeof(IOverloadProvider), typeof(OverloadViewer));
/// <summary>
/// Gets/Sets the item provider.
/// </summary>
public IOverloadProvider Provider {
get { return (IOverloadProvider)GetValue(ProviderProperty); }
set { SetValue(ProviderProperty, value); }
}
/// <summary>
/// Changes the selected index.
/// </summary>
/// <param name="relativeIndexChange">The relative index change - usual values are +1 or -1.</param>
public void ChangeIndex(int relativeIndexChange)
{
IOverloadProvider p = this.Provider;
if (p != null) {
int newIndex = p.SelectedIndex + relativeIndexChange;
if (newIndex < 0)
newIndex = p.Count - 1;
if (newIndex >= p.Count)
newIndex = 0;
p.SelectedIndex = newIndex;
}
}
}
sealed class CollapseIfSingleOverloadConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return ((int)value < 2) ? Visibility.Collapsed : Visibility.Visible;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
throw new NotImplementedException();
}
}
}
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