|
//------------------------------------------------------------------------------
// <copyright file="DataGridAddNewRow.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Windows.Forms {
using System.Runtime.Remoting;
using System.Diagnostics;
using System;
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;
using Microsoft.Win32;
/// <devdoc>
/// This class fully encapsulates the painting logic for an addnew row
/// appearing in a DataGrid.
/// </devdoc>
internal class DataGridAddNewRow : DataGridRow {
private bool dataBound = false;
public DataGridAddNewRow(DataGrid dGrid, DataGridTableStyle gridTable, int rowNum)
: base(dGrid, gridTable, rowNum) {
}
// =------------------------------------------------------------------
// = Methods
// =------------------------------------------------------------------
/// <devdoc>
/// Since the DataView does not return a valid DataRow for
/// a newly added row, the DataGrid sets this property to
/// true to signal that the AddNewRow can safely render
/// row contents and permit editing, etc because a DataRecord
/// exists in the cursor that created this row.
/// </devdoc>
public bool DataBound {
get {
return dataBound;
}
set {
dataBound = value;
}
}
public override void OnEdit() {
if (!DataBound) {
DataGrid.AddNewRow();
}
}
public override void OnRowLeave() {
if (DataBound)
DataBound = false;
}
// the addNewRow has nothing to do with losing focus
//
internal override void LoseChildFocus(Rectangle rowHeader, bool alignToRight)
{
}
// the newDataRow has nothing to do with TAB keys
//
internal override bool ProcessTabKey(Keys keyData, Rectangle rowHeaders, bool alignToRight)
{
return false;
}
/// <devdoc>
/// Paints the row.
/// </devdoc>
public override int Paint(Graphics g, Rectangle bounds, Rectangle trueRowBounds, int firstVisibleColumn, int columnCount)
{
return Paint(g, bounds, trueRowBounds, firstVisibleColumn, columnCount, false);
}
public override int Paint(Graphics g,
Rectangle bounds,
Rectangle trueRowBounds,
int firstVisibleColumn,
int columnCount,
bool alignToRight) {
Rectangle dataBounds = bounds;
DataGridLineStyle gridStyle;
if (this.dgTable.IsDefault)
gridStyle = this.DataGrid.GridLineStyle;
else
gridStyle = this.dgTable.GridLineStyle;
int bWidth = this.DataGrid == null ? 0 : gridStyle == DataGridLineStyle.Solid ? 1 : 0;
dataBounds.Height -= bWidth;
int cx = base.PaintData(g, dataBounds, firstVisibleColumn, columnCount, alignToRight);
if (bWidth > 0)
PaintBottomBorder(g, bounds, cx, bWidth, alignToRight);
return cx;
}
protected override void PaintCellContents(Graphics g, Rectangle cellBounds, DataGridColumnStyle column,
Brush backBr, Brush foreBrush, bool alignToRight) {
if (DataBound) {
CurrencyManager listManager = DataGrid.ListManager;
column.Paint(g, cellBounds, listManager, this.RowNumber, alignToRight);
}
else {
base.PaintCellContents(g, cellBounds, column, backBr, foreBrush, alignToRight);
}
}
}
}
|