private static void OnCommandChanged(DependencyObject a_dependencyObject, DependencyPropertyChangedEventArgs a_e)
{
MenuItem menuItem = a_dependencyObject as MenuItem;
if (menuItem == null)
{
throw new InvalidOperationException(@"MenuItem required");
}
ICommand oldCommand = a_e.OldValue as ICommand;
if (oldCommand != null)
{
menuItem.Command = null;
menuItem.Icon = null;
CommandToolTipHelper.ApplyCommandToolTip(menuItem, null);
ICommandDescriptionProvider oldDescProvider = a_e.OldValue as ICommandDescriptionProvider;
if (GetOverrideHeader(menuItem) && oldDescProvider != null)
{
BindingOperations.ClearBinding(
menuItem,
MenuItem.HeaderProperty);
}
}
ICommand newCommand = a_e.NewValue as ICommand;
if (newCommand != null)
{
menuItem.Command = newCommand;
Uri imageUri = CommandImageHelper.GetCommandImageUri(newCommand);
if (imageUri != null)
{
MenuItemImage image = new MenuItemImage
{
Source = new BitmapImage(imageUri)
};
menuItem.Icon = image;
}
// Header
ICommandDescriptionProvider newDescProvider = a_e.NewValue as ICommandDescriptionProvider;
if (GetOverrideHeader(menuItem) && newDescProvider != null)
{
BindingOperations.SetBinding(
menuItem,
MenuItem.HeaderProperty,
new Binding("Text")
{
Source = newDescProvider.Description
});
}
// tooltip
CommandToolTipHelper.ApplyCommandToolTip(menuItem, newCommand);
}
}
private static void OnCommandChanged(DependencyObject a_dependencyObject, DependencyPropertyChangedEventArgs a_e)
{
Button button = a_dependencyObject as Button;
if (button == null)
{
throw new InvalidOperationException(@"Button required");
}
ICommand oldCommand = a_e.OldValue as ICommand;
if (oldCommand != null)
{
button.Command = null;
CommandToolTipHelper.ApplyCommandToolTip(button, null);
ICommandDescriptionProvider oldDescProvider = a_e.OldValue as ICommandDescriptionProvider;
if (GetOverrideContent(button) && oldDescProvider != null)
{
button.Content = null;
}
}
ICommand newCommand = a_e.NewValue as ICommand;
if (newCommand != null)
{
button.Command = newCommand;
CommandToolTipHelper.ApplyCommandToolTip(button, newCommand);
ICommandDescriptionProvider newDescProvider = a_e.NewValue as ICommandDescriptionProvider;
if (GetOverrideContent(button) && newDescProvider != null)
{
var textContent = new TextBlock()
{
TextAlignment = TextAlignment.Center,
TextWrapping = TextWrapping.Wrap,
};
BindingOperations.SetBinding(
textContent,
TextBlock.TextProperty,
new Binding("Text")
{
Source = newDescProvider.Description
});
Uri imageUri = CommandImageHelper.GetCommandImageUri(newCommand);
if (imageUri != null)
{
Dock?useText = GetAppendText(button);
ButtonImage image = new ButtonImage()
{
VerticalAlignment = VerticalAlignment.Center,
HorizontalAlignment = HorizontalAlignment.Center,
Source = new BitmapImage(imageUri),
};
if (useText.HasValue)
{
Label text = new Label()
{
Margin = new Thickness(2),
VerticalAlignment = VerticalAlignment.Center,
HorizontalAlignment = HorizontalAlignment.Center,
Content = textContent,
};
DockPanel.SetDock(text, useText.Value);
DockPanel container = new DockPanel();
container.LastChildFill = true;
container.Children.Add(text);
container.Children.Add(image);
button.Content = container;
}
else
{
button.Content = image;
}
}
else
{
button.Content = textContent;
}
}
}
}
