static ExecutedRoutedEventHandler OnDelete(RoutedUICommand selectingCommand)
{
return((target, args) => {
TextArea textArea = GetTextArea(target);
if (textArea != null && textArea.Document != null)
{
// call BeginUpdate before running the 'selectingCommand'
// so that undoing the delete does not select the deleted character
using (textArea.Document.RunUpdate()) {
if (textArea.Selection.IsEmpty)
{
TextViewPosition oldCaretPosition = textArea.Caret.Position;
selectingCommand.Execute(args.Parameter, textArea);
bool hasSomethingDeletable = false;
foreach (ISegment s in textArea.Selection.Segments)
{
if (textArea.GetDeletableSegments(s).Length > 0)
{
hasSomethingDeletable = true;
break;
}
}
if (!hasSomethingDeletable)
{
// If nothing in the selection is deletable; then reset caret+selection
// to the previous value. This prevents the caret from moving through read-only sections.
textArea.Caret.Position = oldCaretPosition;
textArea.Selection = Selection.Empty;
}
}
textArea.RemoveSelectedText();
}
textArea.Caret.BringCaretToView();
args.Handled = true;
}
});
}
/// <summary>
/// 统一处理成删除selection，command是一个selection相关的命令。
/// </summary>
/// <param name="command"></param>
/// <returns></returns>
private static ExecutedRoutedEventHandler RemoveHandler(RoutedUICommand command)
{
return((sender, e) =>
{
if (e.Handled)
{
return;
}
EditView editor = sender as EditView;
if (editor != null && editor.Document != null)
{
using (editor.Document.AutoUpdate())
{
if (editor.Selection.IsEmpty)
{
command.Execute(e.Parameter, editor);
}
editor.RemoveSelection();
editor.Redraw();
}
e.Handled = true;
}
});
}
public void Execute()
{
_command.Execute(null, _source);
}
private void DataGrid_Keys_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
InstallKey.Execute(null, this);
e.Handled = true;
}
void Execute(RoutedUICommand command)
{
command.Execute(null, textArea);
}
public static void ExecuteOnMainWindow(this RoutedUICommand command, object parameter = null)
{
command.Execute(parameter, Application.Current.MainWindow);
}
void Execute(RoutedUICommand command)
{
TextArea textArea = this.TextArea;
if (textArea != null)
command.Execute(null, textArea);
}
private void ExecuteCommand(RoutedUICommand cmd, object data = null)
{
cmd.Execute(data, this);
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="?"></param>
private void ListBoxGraphItem_MouseDoubleClick(object sender, MouseButtonEventArgs arg_)
{
RoutedUICommand cmd = (RoutedUICommand)Application.Current.Resources["Commands.OpenGraph"];
cmd.Execute(arg_, this);
}
/// <summary>
/// Adds the new knowledge.
/// </summary>
public static void AddNewKnowledge()
{
Add.Execute(new ItemParams(ObjectType.Knowledge, 0), App.Current.MainWindow);
}
private void OnShowReport(object sender, RoutedEventArgs e)
{
RoutedUICommand cmd = AppCommands.CommandReportBudget;
cmd.Execute(null, this);
}
