解決
私はしばらく時間をかけて解決策を考え出し、applicationbariconbuttonクラスを編集しました。
namespace Phone7.Fx.Controls
{
public class BindableApplicationBarIconButton : FrameworkElement, IApplicationBarIconButton
{
public int Index { get; set; }
public static DependencyProperty CommandProperty = DependencyProperty.RegisterAttached("Command", typeof(ICommand), typeof(BindableApplicationBarIconButton), new PropertyMetadata(null, OnCommandPropertyChanged));
private static void OnCommandPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (e.NewValue != e.OldValue)
{
((BindableApplicationBarIconButton)d).Command = (ICommand)e.NewValue;
}
}
public ICommand Command
{
get { return (ICommand)GetValue(CommandProperty); }
set {
Command.CanExecuteChanged -= ValueOnCanExecuteChanged;
SetValue(CommandProperty, value);
Command.CanExecuteChanged += ValueOnCanExecuteChanged;
}
}
private void ValueOnCanExecuteChanged(object sender, EventArgs eventArgs)
{
ICommand commandSender = sender as ICommand;
if(commandSender != null)
{IsEnabled = commandSender.CanExecute(null);}
}
public static readonly DependencyProperty CommandParameterProperty =
DependencyProperty.RegisterAttached("CommandParameter", typeof(object), typeof(BindableApplicationBarIconButton), new PropertyMetadata(null, OnCommandParameterPropertyChanged));
private static void OnCommandParameterPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var invokeCommand = d as BindableApplicationBarIconButton;
if (invokeCommand != null)
{
invokeCommand.SetValue(CommandParameterProperty, e.NewValue);
}
}
public object CommandParameter
{
get { return GetValue(CommandParameterProperty); }
set
{
SetValue(CommandParameterProperty, value);
}
}
public static readonly DependencyProperty CommandParameterValueProperty =
DependencyProperty.RegisterAttached("CommandParameterValue", typeof(object), typeof(BindableApplicationBarIconButton), null);
public object CommandParameterValue
{
get
{
var returnValue = GetValue(CommandParameterValueProperty);
return returnValue;
}
set { SetValue(CommandParameterValueProperty, value); }
}
public static readonly DependencyProperty IsEnabledProperty =
DependencyProperty.RegisterAttached("IsEnabled", typeof(bool), typeof(BindableApplicationBarIconButton), new PropertyMetadata(true, OnEnabledChanged));
private static void OnEnabledChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (e.NewValue != e.OldValue)
{
((BindableApplicationBarIconButton)d).Button.IsEnabled = (bool)e.NewValue;
}
}
public static readonly DependencyProperty TextProperty =
DependencyProperty.RegisterAttached("Text", typeof(string), typeof(BindableApplicationBarIconButton), new PropertyMetadata(OnTextChanged));
public new static readonly DependencyProperty VisibilityProperty =
DependencyProperty.RegisterAttached("Visibility", typeof(Visibility), typeof(BindableApplicationBarIconButton), new PropertyMetadata(OnVisibilityChanged));
private static void OnVisibilityChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (e.NewValue != e.OldValue)
{
var button = ((BindableApplicationBarIconButton)d);
BindableApplicationBar bar = button.Parent as BindableApplicationBar;
bar.Invalidate();
}
}
public new Visibility Visibility
{
get { return (Visibility)GetValue(VisibilityProperty); }
set { SetValue(VisibilityProperty, value); }
}
private static void OnTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (e.NewValue != e.OldValue)
{
((BindableApplicationBarIconButton)d).Button.Text = e.NewValue.ToString();
}
}
public ApplicationBarIconButton Button { get; set; }
public BindableApplicationBarIconButton()
{
Button = new ApplicationBarIconButton();
Button.Text = "Text";
Button.Click += ApplicationBarIconButtonClick;
}
void ApplicationBarIconButtonClick(object sender, EventArgs e)
{
if (Command != null && CommandParameter != null)
Command.Execute(CommandParameter);
else if (Command != null)
Command.Execute(CommandParameterValue);
if (Click != null)
Click(this, e);
}
public bool IsEnabled
{
get { return (bool)GetValue(IsEnabledProperty); }
set { SetValue(IsEnabledProperty, value); }
}
public string Text
{
get { return (string)GetValue(TextProperty); }
set { SetValue(TextProperty, value); }
}
public event EventHandler Click;
public Uri IconUri
{
get { return Button.IconUri; }
set { Button.IconUri = value; }
}
}