private static void OnCut(Object sender, ExecutedRoutedEventArgs e)
{
EditView editor = sender as EditView;
if (editor != null && editor.Document != null)
{
String targetText = String.Empty;
if (editor.Selection.IsEmpty)
{
// 剪切整行
CopyWholeLine(editor);
editor.SelectLine();
}
else
{
// 剪切选中的文字
CopySelectedText(editor);
}
using (editor.Document.AutoUpdate())
{
editor.RemoveSelection();
editor.Redraw();
}
e.Handled = true;
}
}
private static void OnPaste(Object sender, ExecutedRoutedEventArgs e)
{
EditView editor = sender as EditView;
if (editor != null && editor.Document != null)
{
IDataObject obj = null;
try
{
obj = Clipboard.GetDataObject();
}
catch (ExternalException)
{
return;
}
if (obj == null)
{
return;
}
String text = (String)obj.GetData(DataFormats.UnicodeText);
text = CommonUtilities.NormalizeText(new StringReader(text));
if (!String.IsNullOrEmpty(text))
{
using (editor.Document.AutoUpdate())
{
if (obj.GetDataPresent(LineCopyFormat))
{
// 粘贴整行
editor.InsertLine(text);
editor.Redraw();
}
else
{
editor.InsertText(text);
editor.Redraw();
}
}
}
e.Handled = true;
}
}
private static void OnCancelSelection(Object sender, ExecutedRoutedEventArgs e)
{
if (e.Handled)
{
return;
}
EditView editor = sender as EditView;
editor.CancelSelection();
editor.Redraw();
e.Handled = true;
}
private static void OnRedo(Object sender, ExecutedRoutedEventArgs e)
{
EditView editor = sender as EditView;
if (editor != null && editor.Document != null)
{
editor.Redo();
editor.MoveCaretInVisual();
editor.Redraw();
e.Handled = true;
}
}
private static ExecutedRoutedEventHandler CaretHandler(CaretMovementType caretMovementType, Boolean doSelect)
{
return((sender, e) =>
{
if (e.Handled)
{
return;
}
EditView editor = sender as EditView;
editor.MoveCaret(caretMovementType, doSelect);
editor.Redraw();
e.Handled = true;
});
}
private static void OnEnter(Object sender, ExecutedRoutedEventArgs e)
{
if (e.Handled)
{
return;
}
EditView editor = sender as EditView;
if (editor != null && editor.Document != null)
{
using (editor.Document.AutoUpdate())
{
editor.InsertText(CommonUtilities.LineBreak);
editor.Caret.RestartAnimation();
editor.Redraw();
}
e.Handled = true;
}
}
private static void OnTabBackward(Object sender, ExecutedRoutedEventArgs e)
{
if (e.Handled)
{
return;
}
EditView editor = sender as EditView;
if (editor != null && editor.Document != null)
{
using (editor.Document.AutoUpdate())
{
editor.TabBackward();
editor.Caret.RestartAnimation();
editor.Redraw();
}
e.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;
}
});
}
