public ListBoxDemoWindow(Screen screen)
: base(screen)
{
Width = 400;
var stackPanel = new StackPanel(screen)
{
Orientation = Orientation.Vertical,
Padding = new Thickness(16),
HorizontalAlignment = HorizontalAlignment.Stretch,
VerticalAlignment = VerticalAlignment.Stretch
};
Content = stackPanel;
var title = new TextBlock(screen)
{
Text = "ListBox demo",
HorizontalAlignment = HorizontalAlignment.Stretch,
ForegroundColor = Color.White,
BackgroundColor = Color.Black,
ShadowOffset = new Vector2(2),
TextOutlineWidth = 1,
FontStretch = new Vector2(1.5f)
};
stackPanel.Children.Add(title);
var selectedIndexLabel = new TextBlock(screen)
{
Text = "SelectedIndex: -1",
Padding = new Thickness(8),
HorizontalAlignment = HorizontalAlignment.Stretch,
ForegroundColor = Color.White,
BackgroundColor = Color.Black,
TextHorizontalAlignment = HorizontalAlignment.Left
};
stackPanel.Children.Add(selectedIndexLabel);
var listBox = new ListBox(screen)
{
HorizontalAlignment = HorizontalAlignment.Stretch,
VerticalAlignment = VerticalAlignment.Stretch,
};
listBox.SelectionChanged += (s, e) =>
{
selectedIndexLabel.Text = string.Format("SelectedIndex: {0}", listBox.SelectedIndex);
};
stackPanel.Children.Add(listBox);
for (int i = 0; i < 5; i++)
{
var listBoxItem = new ListBoxItem(screen)
{
HorizontalAlignment = HorizontalAlignment.Stretch,
Padding = new Thickness(8),
Content = new TextBlock(screen)
{
Text = string.Format("Item {0:d2}", i),
HorizontalAlignment = HorizontalAlignment.Stretch,
ForegroundColor = Color.White,
BackgroundColor = Color.Black,
TextHorizontalAlignment = HorizontalAlignment.Left
}
};
listBox.Items.Add(listBoxItem);
}
var switchSelectionModeButton = new Button(screen)
{
HorizontalAlignment = HorizontalAlignment.Stretch,
Padding = new Thickness(8),
Content = new TextBlock(screen)
{
Text = "Enable the multiple selection mode",
ForegroundColor = Color.White,
BackgroundColor = Color.Black
}
};
switchSelectionModeButton.Click += (Control s, ref RoutedEventContext c) =>
{
var textBlock = switchSelectionModeButton.Content as TextBlock;
if (listBox.SelectionMode == ListBoxSelectionMode.Single)
{
listBox.SelectionMode = ListBoxSelectionMode.Multiple;
textBlock.Text = "Disable the multiple selection mode";
}
else
{
listBox.SelectionMode = ListBoxSelectionMode.Single;
textBlock.Text = "Enable the multiple selection mode";
}
};
stackPanel.Children.Add(switchSelectionModeButton);
var closeButton = new Button(screen)
{
HorizontalAlignment = HorizontalAlignment.Stretch,
Padding = new Thickness(8),
Content = new TextBlock(screen)
{
Text = "Close",
ForegroundColor = Color.White,
BackgroundColor = Color.Black
}
};
closeButton.Click += (Control s, ref RoutedEventContext c) => Close();
stackPanel.Children.Add(closeButton);
closeButton.Focus();
}
/// <summary>
/// item が ListBoxItem の場合、それをそのまま項目として追加します。
/// それ以外の場合、
/// Content プロパティに item を設定した ListBoxItem インスタンスを生成し、
/// それを項目として追加します。
/// </summary>
/// <param name="item"></param>
protected override void AddItem(Control item)
{
var target = item;
if (!(item is ListBoxItem))
{
target = new ListBoxItem(Screen)
{
Content = item
};
}
base.AddItem(target);
}
