/// <summary>Initializes a new instance of the <see cref="T:CommandBinding"/> class.</summary>
/// <param name="control">The <see cref="T:ICommandControl"/> that can be bound to a <see cref="T:ICommand"/>.</param>
public CommandBinding(ICommandControl control)
{
if (control == null) throw new ArgumentNullException("control");
_control = control;
control.Activated += HandlerControlActivated;
control.Disposed += HandlerControlDisposed;
control.SetCommandEnabled(false);
}
/// <summary>
/// (自动)绑定命令按钮的ControlEvent 到关联的命令对象
/// </summary>
/// <param name="control"></param>
public void BindCommandControls(ICommandControl control)
{
object dataSource = GetInstanceByMemberName(control.CommandObject);
string[] propNames = control.CommandName.Split('.');
object obj = GetPropertyValue(dataSource, propNames);
IMvvmCommand command = obj as IMvvmCommand;
BindCommandControls(control, control.ControlEvent, command);
}
protected void RegisterControl( ICommandControl control )
{
if( _commandControlSet == null )
{
_deferredControls.Add( control );
}
else
{
_commandControlSet.AddControl( control );
}
}
/// <summary>
/// 绑定一个命令控件到一个有参数的命令方法上
/// </summary>
/// <typeparam name="T">命令方法的参数类型</typeparam>
/// <param name="control">命令控件</param>
/// <param name="command">带参数的命令方法</param>
public void BindCommandControls <T>(ICommandControl control, CommandMethod <T> command)
{
//dictCommand.Add(control, command);
EventHandler hander = new EventHandler(
(object sender, EventArgs e) => {
CommandEventMethod <T>(sender, e, command);
});
Type ctrType = control.GetType();
ctrType.GetEvent(control.ControlEvent).AddEventHandler(control, hander);
}
/// <summary>
/// 绑定控件的事件到命令接口对象
/// </summary>
/// <param name="control">窗体控件</param>
/// <param name="controlEvent">控件的事件</param>
/// <param name="command">要绑定的命令接口对象</param>
public void BindCommandControls(object control, string controlEvent, IMvvmCommand command)
{
EventHandler hander = new EventHandler(
(object sender, EventArgs e) =>
{
object paraValue = null;
if (control is ICommandControl)
{
try
{
ICommandControl cmdCtr = control as ICommandControl;
if (cmdCtr.ParameterObject != null && cmdCtr.ParameterProperty != null)
{
object paraSource = GetInstanceByMemberName(cmdCtr.ParameterObject);
string[] paraPropNames = cmdCtr.ParameterProperty.Split('.');
paraValue = GetPropertyValue(paraSource, paraPropNames);
}
}
catch (Exception ex)
{
RaiseBinderError(control, ex);
return;
}
}
if (command.BeforExecute(paraValue))
{
try
{
command.Execute(paraValue);
}
catch (Exception ex)
{
RaiseBinderError(control, ex);
}
finally
{
command.AfterExecute();
}
}
});
Type ctrType = control.GetType();
ctrType.GetEvent(controlEvent).AddEventHandler(control, hander);
}
private void CommandEventMethod <T>(object sender, EventArgs e, CommandMethod <T> command)
{
ICommandControl cmdCtr = sender as ICommandControl;
try
{
//这里不处理命令控件关联的命令对象
object dataSource = GetInstanceByMemberName(cmdCtr.ParameterObject);
T paraValue = GetCommandParameterValue <T>(dataSource, cmdCtr.ParameterProperty);
//CommandMethod<T> method = (CommandMethod<T>)dictCommand[sender];
//method(paraValue);
command(paraValue);
}
catch (Exception ex)
{
RaiseBinderError(sender, ex);
}
}
/// <summary>
/// Binds this object to any <see cref="CommandToolStripMenuItem"/>s and <see cref="CommandToolStripButton"/>s
/// that are found in the specified <see cref="ToolStripItemCollection"/>.
/// </summary>
public void BindTo(ToolStripItemCollection toolStripItems, IMainWindow mainWindow)
{
Util.ThrowIfParameterNull(toolStripItems, "toolStripItems");
foreach (ToolStripItem item in toolStripItems)
{
ICommandControl commandControl = item as ICommandControl;
if (commandControl != null)
{
BindTo(commandControl, mainWindow);
}
ToolStripDropDownItem dropDownItem = item as ToolStripDropDownItem;
if (dropDownItem != null)
{
BindTo(dropDownItem.DropDownItems, mainWindow);
}
}
}
/// <summary>
/// Bind this object to a single control
/// </summary>
public void BindTo(ICommandControl control, IMainWindow mainWindow)
{
((ICommand)control.Command).SetMainWindow(mainWindow);
control.SelectionBroadcaster = this;
}
/// <summary>
/// Bind this object to a single control
/// </summary>
public void BindTo(ICommandControl control, IMainWindow mainWindow)
{
((ICommand)control.Command).SetMainWindow(mainWindow);
control.SelectionBroadcaster = this;
}