/// <summary>
/// Removes all the buttons from panel and dispose commands that support context.
/// </summary>
private void _ClearCommandButtons()
{
// Dispose commands that support context since they were instantiated by the class.
foreach (Button button in ButtonsWrapPanel.Children)
{
Debug.Assert(button != null);
// Obtain the command from the button.
AppCommands.ICommand cmd = null;
if (button is CommandButton)
{
cmd = ((CommandButton)button).ApplicationCommand;
}
else if (button is OptionsCommandButton)
{
cmd = ((OptionsCommandButton)button).ApplicationCommand;
}
else
{
Debug.Assert(false); // Not support type of button.
}
// If command supports context and can be disposed.
if (cmd is AppCommands.ISupportContext && cmd is IDisposable)
{
// Dispose command.
((IDisposable)cmd).Dispose();
}
}
// Remove buttons from the panel.
ButtonsWrapPanel.Children.Clear();
}
/// <summary>
/// Creates command buttons.
/// </summary>
private void _CreateCommandButtons()
{
Debug.Assert(null != App.Current.CommandManager);
_ClearCommandButtons();
// If command category name is empty - just clear command buttons.
if (string.IsNullOrEmpty(CommandCategoryName))
{
return;
}
ICollection <AppCommands.ICommand> commands = App.Current.CommandManager.GetCategoryCommands(CommandCategoryName);
foreach (AppCommands.ICommand command in commands)
{
AppCommands.ICommand cmd = command;
// If command supports context - special handling.
if (command is AppCommands.ISupportContext)
{
// Instantiate new intance of such command to initialize it with the context.
cmd = (AppCommands.ICommand)Activator.CreateInstance(command.GetType());
// Initialize command.
cmd.Initialize(App.Current);
// Set command context.
((AppCommands.ISupportContext)cmd).Context = CommandContext;
}
if (command is AppCommands.ISupportOptions)
{
OptionsCommandButton ocbtn = new OptionsCommandButton();
ocbtn.Content = command.Title;
ocbtn.ApplicationCommand = cmd;
ocbtn.Style = (Style)App.Current.FindResource("CommandOptionsButtonInGroupStyle");
ButtonsWrapPanel.Children.Add(ocbtn);
}
else
{
CommandButton cbtn = new CommandButton();
cbtn.Content = command.Title;
cbtn.ApplicationCommand = cmd;
cbtn.Style = (Style)App.Current.FindResource("CommandButtonInGroupStyle");
ButtonsWrapPanel.Children.Add(cbtn);
}
}
}
