/// <summary>
/// Key = Enter,内容填充
/// Key = Up且ListBox选中第一项,TextBox设为焦点
/// </summary>
/// <param name="smartLB">用于显示列表的ListBox</param>
/// <param name="e">KeyEventArgs</param>
public static void LBKeyDown(ListBox smartLB, KeyEventArgs e)
{
if (e.Key == Key.Enter)
{
FillText(smartLB);
e.Handled = true;
}
else if (e.Key == Key.Up && smartLB.SelectedIndex == 0)
{
SmartTag a = smartLB.Tag as SmartTag;
if (a != null && a._TB != null)
{
a._TB.Focus();
e.Handled = true;
}
}
}
/// <summary>
/// 失去焦点方法
/// TextBox_LostFocus
/// </summary>
/// <param name="smartLB">用于显示列表的ListBox</param>
public static void TBLostFocus(ListBox smartLB, bool Update)
{
if (Update)
{
SmartTag smartTag = smartLB.Tag as SmartTag;
if (smartTag != null && smartTag._TB != null && smartTag._TB.Tag != null)
{
string _text = smartTag._TB.Text.Trim();
if (_text.Length != 0 && _text != smartTag._Text)
{
UpdateMark(smartTag._TB.Tag.ToString(), _text);
}
}
}
//隐藏smartLB>>清除Tag绑定的TextBox>>清除集合源
smartLB.Visibility = Visibility.Hidden;
smartLB.Tag = null;
smartLB.ItemsSource = null;
}
/// <summary>
/// 内容填充方法ListBox_PreviewMouseDoubleClick
/// </summary>
/// <param name="smartLB"></param>
public static void FillText(ListBox smartLB)
{
if (smartLB.SelectedItem != null)
{
//获取选中的字符串
string itemString = smartLB.SelectedItem.ToString();
//字符串不为空->smartTag不为空->更新所属文本框的文本>>光标移到文本末尾>>继续
if (itemString.Length != 0)
{
SmartTag smartTag = smartLB.Tag as SmartTag;
if (smartTag != null)
{
smartTag._TB.Text = itemString;
smartTag._TB.Focus();
smartTag._TB.SelectionStart = itemString.Length;
smartLB.Visibility = Visibility.Hidden;
}
}
}
}
/// <summary>
/// 内容更改方法
/// TextBox_TextChanged
/// </summary>
/// <param name="smartLB">用于显示列表的ListBox</param>
public static void TBChanged(ListBox smartLB)
{ //允许运行(线程池中没有延时更新任务)
if (allowRun && keyDown)
{
keyDown = false;
SmartTag smartTag = smartLB.Tag as SmartTag;
//有smartTag并且里面有markXEList记录
if (smartTag != null && smartTag._List.Count != 0)
{
//马上建立分线程了,在线程结束前阻止其他调用TBChanged的命令执行
allowRun = false;
//在线程池中添加在分线程中执行的方法委托
//采用匿名方法
ThreadPool.QueueUserWorkItem((o) =>
{
//延时,毫米
Thread.Sleep(threadTimeout);
//------延时时间到后------
List <string> _StringList;
int _ListCount;
string keyword = "";
//在控件关联线程中获取控件的Text
smartLB.Dispatcher.Invoke(() => keyword = smartTag._TB.Text);
//去除关键字前后空白并把字母设为小写
keyword = keyword.Trim().ToLower();
//关键字为空->返回smartMark对应标记(Mark)的所有文本"Text"列表 >> 继续
if (keyword.Length == 0)
{
_StringList = smartTag._List.Select(_func => _func.Text).ToList();
}
else//其他->根据关键字检索smartMark对应标记(Mark),返回对应文本"Text"列表>>继续
{
_StringList = smartTag._List.Where(_func => _func.Letter.Contains(keyword) || _func.Text.Contains(keyword)).Select(_func => _func.Text).ToList();
}
_ListCount = _StringList.Count;
//_ListCount为0,_ListCount为1并且和senderTB相同->隐藏smartLB >> 返回
if (_ListCount == 0 || _ListCount == 1 && _StringList.Contains(keyword))
{
//在控件关联线程中更新控件
smartLB.Dispatcher.Invoke(() => smartLB.Visibility = Visibility.Hidden);
}
else
{
//_StringList总数超过MaxDisplayCount->截取指定数量 >> 修改列表总数 >> 继续
if (maxDisplayCount != 0 && maxDisplayCount < _ListCount)
{
_StringList = _StringList.Take(maxDisplayCount).ToList();
}
//绑定数据源 >> 显示smartLB
//在控件关联线程中更新控件
smartLB.Dispatcher.Invoke(() =>
{
smartLB.ItemsSource = _StringList;
smartLB.Visibility = Visibility.Visible;
});
}
allowRun = true;
});
}
else
{
keyDown = false;
smartLB.Visibility = Visibility.Hidden;
}
}
}