#region
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using System.Windows.Forms;
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using DevExpress.XtraEditors;
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using DevExpress.XtraGrid;
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using DevExpress.XtraGrid.Columns;
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using DevExpress.XtraGrid.Views.Grid;
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#endregion
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namespace CSFrameworkV5.Library.CommonClass
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{
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/// <summary>
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/// GridView移动表格单元管理类, 最后版本:2014-12-30
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/// </summary>
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public class GridMovetor
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{
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/// <summary>
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/// 根据GridView内置有焦点的控件,获取父级GridView
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/// </summary>
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/// <param name="activeControl">当前焦点的控件</param>
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/// <returns></returns>
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private static GridView GetGridViewByFocusEditor(Control activeControl)
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{
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while (activeControl.Parent != null)
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{
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if (activeControl.Parent is GridControl)
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return (GridView)((GridControl)activeControl.Parent)
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.FocusedView;
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activeControl = activeControl.Parent;
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}
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return null;
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}
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/// <summary>
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/// 检查当前控件是否GridView内置有焦点的控件
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/// </summary>
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/// <param name="activeControl">当前焦点的控件</param>
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/// <returns></returns>
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public static bool IsGridViewEditorFocus(Control activeControl)
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{
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var isEditor = activeControl is TextBoxBase;
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var view = GetGridViewByFocusEditor(activeControl);
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return isEditor && view != null;
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}
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/// <summary>
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/// 是否最后可编辑的列
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/// </summary>
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/// <param name="view">GridView</param>
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/// <param name="focusedColumn">当前焦点的列</param>
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/// <returns></returns>
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public static bool IsLastEditableColumn(GridView view,
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GridColumn focusedColumn)
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{
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var idx = view.VisibleColumns.IndexOf(focusedColumn);
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for (var i = view.VisibleColumns.Count - 1; i >= 0; i--)
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{
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var col = view.VisibleColumns[i];
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//忽略不可编辑Column
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if (!col.OptionsColumn.AllowEdit) continue;
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if (idx != i) return false; //非最后一个可编辑Column
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return true;
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}
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return true;
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}
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/// <summary>
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/// 移动到下一个可编辑的列
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/// </summary>
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/// <param name="currentCol"></param>
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/// <param name="e"></param>
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public static void MoveNextColumn(GridColumn currentCol)
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{
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for (var i = currentCol.VisibleIndex + 1;
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i < currentCol.View.VisibleColumns.Count;
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i++)
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{
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var colTemp = currentCol.View.VisibleColumns[i];
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if (colTemp.OptionsColumn.AllowEdit)
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{
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currentCol.View.FocusedColumn = colTemp;
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break;
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}
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}
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}
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/// <summary>
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/// 移动到下一个可编辑的列, 若是当前行的最后一列,则定位下一行的第一个可编辑栏位.
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/// </summary>
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/// <param name="view">GridView</param>
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/// <param name="activeControl">当前焦点的控件</param>
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/// <param name="e"></param>
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public static void MoveNextColumnOrRow(GridView view,
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GridColumn currentCol, KeyPressEventArgs e)
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{
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//若是当前行的最后一列,则定位下一行的第一个可编辑栏位.
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if (IsLastEditableColumn(view, currentCol))
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{
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if (view.FocusedRowHandle + 1 < view.RowCount)
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{
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view.MoveNext();
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view.FocusedColumn = view.VisibleColumns[0];
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e.Handled = true;
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}
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}
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else
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{
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//在当前行定位下一个可编辑栏位.
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MoveNextColumn(view.FocusedColumn);
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e.Handled = true;
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}
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}
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/// <summary>
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/// 处理表格KeyDown事件。
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/// <para>1.按回车或Tab键自动跳到下一个栏位.</para>
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/// <para>2.处理在最后一条记录的最后一栏按回车键新增一条记录.</para>
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/// </summary>
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public static void OnGridViewKeyDown(object sender, KeyEventArgs e)
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{
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if (!(e.KeyCode == Keys.Enter || e.KeyCode == Keys.Tab)) return;
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if (sender is GridView)
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{
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var view = (GridView)sender;
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var grid = view.GridControl;
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var isLastCol = IsLastEditableColumn(view, view.FocusedColumn);
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var isLastRow = view.FocusedRowHandle == view.RowCount - 1;
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//不是最后可编辑列, 则移至下一列
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if (isLastCol == false || isLastRow == false)
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{
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MoveNextColumnOrRow(view, view.FocusedColumn,
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new KeyPressEventArgs((char)Keys.Enter));
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e.Handled = true;
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return; //任务完成,不处理以下任何事务
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}
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//最后一条记录的最后一列,自动添加记录
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if (isLastRow && isLastCol && view.OptionsBehavior.Editable)
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if (view.GridControl.EmbeddedNavigator.Buttons.CustomButtons
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.Count > 0)
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{
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var addButtonIndex = 0;
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NavigatorButtonBase addButton =
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view.GridControl.EmbeddedNavigator.Buttons
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.CustomButtons[addButtonIndex];
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view.GridControl.EmbeddedNavigator.Buttons.DoClick(
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addButton);
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view.FocusedColumn =
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view.VisibleColumns[0]; //新增记录后,将焦点移动到第一列
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e.Handled = true;
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}
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}
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}
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}
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}
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