/// <summary>
/// 处理补全提示的打开、更新、关闭
/// </summary>
/// <remarks>
/// 不能在 PreviewTextInput 中处理，因为中英文输入行为不一致。
/// </remarks>
private void TagSearchBox_TextChanged(object sender, TextChangedEventArgs e)
{
//需判断标志位，以免删除时触发
if (!previewTextInputHappend)
{
return;
}
if (IntelliUtils.IsQuoteOdd(tagSearchBox.Text) &&
tagSearchBox.CaretIndex == tagSearchBox.Text.Length)
{
string prefix = IntelliUtils.ExtractPrefix(tagSearchBox.Text);
winVM.RefreshIntelliItems(prefix);
if (winVM.IntelliItems.Count > 0)
{
intelliPopup.IsOpen = true;
intelliLst.SelectedIndex = 0;
if (prefix.Length == 0)
{
intelliPopup.PlacementRectangle =
tagSearchBox.GetRectFromCharacterIndex(
tagSearchBox.Text.Length);
}
}
else
{
intelliPopup.IsOpen = false;
}
}
else
{
intelliPopup.IsOpen = false;
}
previewTextInputHappend = false;
}
/// <summary>
/// 把选中的提示放到输入框中，并关闭提示
/// </summary>
private void UseIntelliThenClose()
{
if (intelliLst.SelectedItem != null)
{
string tagName = IntelliUtils.EscapeTagName(
(intelliLst.SelectedItem as IntelliItem).Name);
int prefixLen = IntelliUtils.ExtractPrefix(tagSearchBox.Text).Length;
string textWithoutPrefix = tagSearchBox.Text.Substring(
0, tagSearchBox.Text.Length - prefixLen);
tagSearchBox.Text = textWithoutPrefix + tagName + "\" ";
tagSearchBox.CaretIndex = tagSearchBox.Text.Length;
}
intelliPopup.IsOpen = false;
}