// 响应鼠标右键点击栏目标题的动作，出现上下文菜单
public static void OnColumnContextMenuClick(ListView list,
ColumnClickEventArgs e)
{
int nClickColumn = e.Column;
ListViewProperty prop = GetListViewProperty(list);
if (prop == null)
{
throw new Exception("ListView的Tag没有包含ListViewProperty对象");
}
#if NO
ColumnSortStyle sortStyle = prop.GetSortStyle(nClickColumn);
prop.SortColumns.SetFirstColumn(nClickColumn,
sortStyle,
list.Columns,
true);
#endif
ContextMenuStrip contextMenu = new ContextMenuStrip();
ToolStripMenuItem menuItem = null;
ToolStripMenuItem subMenuItem = null;
// list.Columns[nClickColumn].Text
menuItem = new ToolStripMenuItem("设置排序方式");
contextMenu.Items.Add(menuItem);
ColumnSortStyle sortStyle = prop.GetSortStyle(list, nClickColumn);
if (sortStyle == null)
{
sortStyle = ColumnSortStyle.None;
}
List <ColumnSortStyle> all_styles = prop.GetAllSortStyle(list, nClickColumn);
foreach (ColumnSortStyle style in all_styles)
{
subMenuItem = new ToolStripMenuItem();
subMenuItem.Text = GetSortStyleCaption(style);
SetSortStyleParam param = new SetSortStyleParam();
param.ColumnIndex = nClickColumn;
param.prop = prop;
param.Style = style;
subMenuItem.Tag = param;
subMenuItem.Click += new EventHandler(menu_setSortStyle_Click);
if (style == sortStyle)
{
subMenuItem.Checked = true;
}
menuItem.DropDown.Items.Add(subMenuItem);
}
Point p = list.PointToClient(Control.MousePosition);
contextMenu.Show(list, p);
}
// 清除所有留存的排序信息，刷新list的标题栏上的陈旧的排序标志
public static void ClearSortColumns(ListView list)
{
ListViewProperty prop = GetListViewProperty(list);
if (prop == null)
{
return;
}
prop.SortColumns.Clear();
SortColumns.ClearColumnSortDisplay(list.Columns);
prop.CurrentDbName = ""; // 清除记忆
}
// 响应点击栏目标题的动作，进行排序
// parameters:
// bClearSorter 是否在排序后清除 sorter 函数
public static void OnColumnClick(ListView list,
ColumnClickEventArgs e,
bool bClearSorter = true)
{
int nClickColumn = e.Column;
ListViewProperty prop = GetListViewProperty(list);
if (prop == null)
{
throw new Exception("ListView的Tag没有包含ListViewProperty对象");
}
// 2013/3/31
// 如果标题栏没有初始化，则需要先初始化
if (list.SelectedItems.Count == 0 && list.Items.Count > 0)
{
list.Items[0].Selected = true;
OnSelectedIndexChanged(list,
0,
null);
list.Items[0].Selected = false;
}
ColumnSortStyle sortStyle = prop.GetSortStyle(list, nClickColumn);
prop.SortColumns.SetFirstColumn(nClickColumn,
sortStyle,
list.Columns,
true);
// 排序
SortColumnsComparer sorter = new SortColumnsComparer(prop.SortColumns);
if (prop.HasCompareColumnEvent() == true)
{
sorter.EventCompare += (sender1, e1) =>
{
prop.OnCompareColumn(sender1, e1);
};
}
list.ListViewItemSorter = sorter;
if (bClearSorter == true)
{
list.ListViewItemSorter = null;
}
}
// 响应选择标记发生变化的动作，修改栏目标题文字
// parameters:
// protect_column_numbers 需要保护的列的列号数组。列号从0开始计算。所谓保护就是不破坏这样的列的标题，设置标题从它们以外的列开始算起。nRecPathColumn表示的列号不必纳入本数组，也会自动受到保护。如果不需要本参数，可以用null
public static void OnSelectedIndexChanged(ListView list,
int nRecPathColumn,
List <int> protect_column_numbers)
{
ListViewProperty prop = GetListViewProperty(list);
if (prop == null)
{
throw new Exception("ListView 的 Tag 没有包含 ListViewProperty 对象");
}
if (list.SelectedItems.Count == 0)
{
// 清除所有栏目标题为1,2,3...，或者保留以前的残余值?
return;
}
ListViewItem item = list.SelectedItems[0];
// 获得路径。假定都在第一列？
string strRecPath = GetItemText(item, nRecPathColumn);
ColumnPropertyCollection props = null;
string strDbName = "";
if (String.IsNullOrEmpty(strRecPath) == true)
{
strDbName = "<blank>"; // 特殊的数据库名，表示第一列空的情况
props = prop.GetColumnName(strDbName);
goto DO_REFRESH;
}
// 取出数据库名
strDbName = prop.ParseDbName(strRecPath); // GetDbName(strRecPath);
if (String.IsNullOrEmpty(strDbName) == true)
{
return;
}
if (strDbName == prop.CurrentDbName)
{
return; // 没有必要刷新
}
props = prop.GetColumnName(strDbName);
DO_REFRESH:
if (props == null)
{
// not found
// 清除所有栏目标题为1,2,3...，或者保留以前的残余值?
props = new ColumnPropertyCollection();
}
// 修改文字
int index = 0;
for (int i = 0; i < list.Columns.Count; i++)
{
ColumnHeader header = list.Columns[i];
if (i == nRecPathColumn)
{
continue;
}
// 越过需要保护的列
if (protect_column_numbers != null)
{
if (protect_column_numbers.IndexOf(i) != -1)
{
continue;
}
}
#if NO
if (index < props.Count)
{
if (header.Tag != null)
{
header.Tag = props[index];
}
else
{
header.Text = props[index].Title;
}
}
else
{
ColumnProperty temp = (ColumnProperty)header.Tag;
if (temp == null)
{
header.Text = i.ToString();
}
else
{
header.Text = temp.Title;
}
}
#endif
ColumnProperty temp = (ColumnProperty)header.Tag;
if (index < props.Count)
{
if (temp != props[index])
{
header.Tag = props[index];
temp = props[index];
}
}
else
{
temp = null; // 2013/10/5 多出来找不到定义的列，需要显示为数字
}
if (temp == null)
{
// 如果 header 以前有文字就沿用，没有时才使用编号填充 2014/9/6 消除 BUG
if (string.IsNullOrEmpty(header.Text) == true)
{
header.Text = i.ToString();
}
}
else
{
header.Text = temp.Title;
}
index++;
}
// 刷新排序列的显示。也就是说刷新那些参与了排序的个别列的显示
prop.SortColumns.RefreshColumnDisplay(list.Columns);
prop.CurrentDbName = strDbName; // 记忆
}