GARbro-mirror/AutoComplete.cs

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//! \file AutoComplete.cs
//! \date Tue Aug 04 20:41:22 2015
//! \brief TextBox that uses filesystem as source for autocomplete.
//
// Copyright (C) 2014-2015 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace GARbro.GUI
{
/// <summary>
/// TextBox that uses filesystem as source for autocomplete.
/// </summary>
public class ExtAutoCompleteBox : AutoCompleteBox
{
public delegate void EnterKeyDownEvent (object sender, KeyEventArgs e);
public event EnterKeyDownEvent EnterKeyDown;
public ExtAutoCompleteBox ()
{
this.GotFocus += (s, e) => { IsTextBoxFocused = true; };
this.LostFocus += (s, e) => { IsTextBoxFocused = false; };
}
public bool IsTextBoxFocused
{
get { return (bool)GetValue (HasFocusProperty); }
private set { SetValue (HasFocusProperty, value); }
}
public static readonly DependencyProperty HasFocusProperty =
DependencyProperty.RegisterAttached ("IsTextBoxFocused", typeof(bool), typeof(ExtAutoCompleteBox), new UIPropertyMetadata());
protected override void OnKeyDown (KeyEventArgs e)
{
base.OnKeyDown (e);
if (e.Key == Key.Enter)
RaiseEnterKeyDownEvent (e);
}
private void RaiseEnterKeyDownEvent (KeyEventArgs e)
{
if (EnterKeyDown != null)
EnterKeyDown (this, e);
}
protected override void OnPopulating (PopulatingEventArgs e)
{
try
{
var candidates = new List<string>();
string dirname = Path.GetDirectoryName (this.Text);
if (!string.IsNullOrEmpty (dirname) && Directory.Exists (dirname))
{
foreach (var dir in Directory.GetDirectories (dirname))
{
if (dir.StartsWith (dirname, StringComparison.CurrentCultureIgnoreCase))
candidates.Add (dir);
}
}
this.ItemsSource = candidates;
}
catch
{
// ignore filesystem errors
}
base.OnPopulating (e);
}
}
}