internal UICommand(ClientCommand command, Type ownerType, InputGestureCollection gestures)
: base(command.Meta.Label ?? string.Empty, command.Meta.Name, ownerType, gestures)
{
if (command == null) { throw new ArgumentNullException("command"); }
this._command = command;
}
protected override FrameworkElement CreateCommandUI(ClientCommand cmd)
{
var textBox = CreateTextBox(cmd);
if (this.TriggerMode == TextBoxCommandTriggerMode.EnterPressed)
{
//在textBox上按下回车时，执行命令。
textBox.KeyDown += (o, e) =>
{
if (e.Key == Key.Enter)
{
cmd.TryExecute(textBox);
}
};
}
else
{
textBox.TextChanged += (o, e) =>
{
cmd.TryExecute(textBox);
};
}
return textBox;
}
/// <summary>
/// 编程时可使用的名字，
/// “由于 Name 可能包含一些奇怪的字符，所以不能直接赋值给控件的 Name”。
/// </summary>
internal static string GetProgrammingName(ClientCommand command)
{
string result = Regex.Replace(command.Meta.Name, @"[^a-zA-Z_]", "_");
result = result.Insert(0, "cmd_");
return(result);
}
protected override FrameworkElement CreateCommandUI(ClientCommand cmd)
{
var listSource = cmd as IDataSelectorCommand;
if (listSource == null)
{
throw new InvalidProgramException("命令必须继承 DataSelectorCommand<T> 类。");
}
var item = this.CreateMenuItem(cmd);
item.Header = this.SingleMeta.Label;
item.ItemsSource = listSource.DataSource;
item.Click += (o, e) =>
{
//当点击的是 ItemsSource 绑定生成的 MenuItem 时，开始执行事件。
if (e.OriginalSource != e.Source)
{
var itemSelected = (e.OriginalSource as MenuItem).Header.ToString();
listSource.SetSelectedItem(itemSelected);
cmd.TryExecute(item);
}
};
return(item);
}
private static void OnCommandCreated(ClientCommand cmd)
{
var handler = CommandCreated;
if (handler != null)
{
handler(null, new InstanceEventArgs <ClientCommand>(cmd));
}
}
internal UICommand(ClientCommand command, Type ownerType, InputGestureCollection gestures) :
base(command.Meta.Label ?? string.Empty, command.Meta.Name, ownerType, gestures)
{
if (command == null)
{
throw new ArgumentNullException("command");
}
this._command = command;
}
protected override FrameworkElement CreateCommandUI(ClientCommand cmd)
{
var textBox = CreateTextBox(cmd);
//在textBox上按下回车时，执行命令。
textBox.KeyDown += (o, e) =>
{
if (e.Key == Key.Enter)
{
cmd.TryExecute(textBox);
textBox.Text = string.Empty;
}
};
return textBox;
}
/// <summary>
/// 编程时可使用的名字，
/// “由于 Name 可能包含一些奇怪的字符，所以不能直接赋值给控件的 Name”。
/// </summary>
internal static string GetProgrammingName(ClientCommand command)
{
string result = Regex.Replace(command.Meta.Name, @"[^a-zA-Z_]", "_");
result = result.Insert(0, "cmd_");
return result;
}
/// <summary>
/// 设置文件框输入值。
/// </summary>
/// <param name="command"></param>
/// <param name="value"></param>
public static void SetTextBoxParameter(ClientCommand command, string value)
{
command.SetExtendedProperty(TextBox, value);
}
/// <summary>
/// 获取文件框输出值。
/// </summary>
/// <param name="command"></param>
/// <returns></returns>
public static string GetTextBoxParameter(ClientCommand command)
{
return command.GetPropertyOrDefault<string>(TextBox);
}
/// <summary>
/// 为运行时的Command生成一个菜单项
/// </summary>
/// <param name="command"></param>
/// <returns></returns>
protected MenuItem CreateMenuItem(ClientCommand command)
{
MenuItem menuItem = new MenuItem();
menuItem.CommandParameter = this.Context.CommandArg;
MenuItemCommand.SetCommand(menuItem, command.UICommand);
return menuItem;
}
private static void OnCommandCreated(ClientCommand cmd)
{
var handler = CommandCreated;
if (handler != null) { handler(null, new InstanceEventArgs<ClientCommand>(cmd)); }
}
/// <summary>
/// 为一个运行时的 Command 生成 TextBox 控件。
/// </summary>
/// <param name="command"></param>
/// <returns></returns>
protected static TextBox CreateTextBox(ClientCommand command)
{
var textBox = new TipTextBox()
{
Width = 150,
VerticalAlignment = VerticalAlignment.Center,
Margin = new Thickness(2),
EmptyValue = command.Label,
ToolTip = command.Meta.ToolTip.Translate()
};
//当TextBox的值改变时，通知命令进行新的输入值
textBox.TextChanged += (o, e) =>
{
var txt = textBox.Text;
if (txt == textBox.EmptyValue) { txt = string.Empty; }
SetTextBoxParameter(command, txt);
};
//支持UI Test
AutomationProperties.SetName(textBox, command.Label);
return textBox;
}
protected override FrameworkElement CreateCommandUI(ClientCommand command)
{
return this.CreateMenuItem(command);
}
/// <summary> /// 这个类的子类实现此方法，来生成具体的命令与控件。 /// </summary> /// <returns></returns> protected abstract FrameworkElement CreateCommandUI(ClientCommand command);
internal static CommandBinding CreateCommandBinding(ClientCommand cmd)
{
return(new CommandBinding(cmd.UICommand, CommandBindingExecuted, CommandBindingCanExecute));
}
/// <summary>
/// 为运行时的Command生成一个按钮
/// </summary>
/// <param name="command"></param>
/// <returns></returns>
protected Button CreateButton(ClientCommand command)
{
var btn = new Button();
btn.CommandParameter = this.Context.CommandArg;
ButtonCommand.SetCommand(btn, command.UICommand);
return btn;
}
internal static CommandBinding CreateCommandBinding(ClientCommand cmd)
{
return new CommandBinding(cmd.UICommand, CommandBindingExecuted, CommandBindingCanExecute);
}