昨天的问题，DataGrid的TableStyle的确是一个很复杂的结构，而clone的实现应该是基于prototype模式的，昨天回家的路上感觉还是有点不爽，使用prototype解决这个问题，不是不可以，但是不是很好，应验了Richard的一句话，"There is no right or wrong, but good or bad."（不是原话，意思而已）也正因为Richard说过"Just make it good enough"，我还是想改它，参考了一下Builder模式，写了一个不伦不类的Builder，见笑了。
Copyright (c) runmin#region Copyright (c) runmin
/**//*
* Copyright (c) runmin@tom.com
* Sample code, created on 2004-12-15 8:57:15 by runmin.
* */
#endregion Copyright
Using directives#region Using directives
using System.Windows.Forms;
#endregion
namespace Runmin.Sample
{
/**//// <summary>
/// Returns an instance of System.Windows.Forms.DataGridTableStyle class.
/// </summary>
public interface ITableStyleBuilder
{
/**//// <summary>
/// The builder method.
/// </summary>
/// <returns>TableStyle instance</returns>
DataGridTableStyle BuildStyle(string theMappingName);
}
public class DefaultTableStyleBuilder : ITableStyleBuilder
{
private DisplayStyle displayStyle;
public DisplayStyle DisplayStyle
{
get
{
return this.displayStyle;
}
set
{
this.displayStyle = value;
}
}
private DataGridColumnStyle gridColumnStyle;
public DataGridColumnStyle GridColumnStyle
{
get
{
return this.gridColumnStyle;
}
set
{
this.gridColumnStyle = value;
}
}
public virtual DataGridTableStyle BuildStyle(string theMappingName)
{
DataGridTableStyle theTableStyle = new DataGridTableStyle();
theTableStyle.MappingName = theMappingName;
theTableStyle.ForeColor =
theTableStyle.HeaderForeColor =
theTableStyle.SelectionForeColor =
this.displayStyle.ForeColor;
theTableStyle.BackColor = this.displayStyle.BackColor;
theTableStyle.HeaderBackColor = this.displayStyle.HeaderBackColor;
theTableStyle.GridLineColor = this.displayStyle.GridLineColor;
theTableStyle.SelectionBackColor = this.displayStyle.SelectionBackColor;
return theTableStyle;
}
}
public struct DisplayStyle
{
private System.Drawing.Color backColor;
public System.Drawing.Color BackColor
{
get
{
return backColor;
}
set
{
backColor = value;
}
}
private System.Drawing.Color foreColor;
public System.Drawing.Color ForeColor
{
get
{
return foreColor;
}
set
{
foreColor = value;
}
}
private System.Drawing.Color gridLineColor;
public System.Drawing.Color GridLineColor
{
get
{
return gridLineColor;
}
set
{
gridLineColor = value;
}
}
private System.Drawing.Color headerBackColor;
public System.Drawing.Color HeaderBackColor
{
get
{
return headerBackColor;
}
set
{
headerBackColor = value;
}
}
private System.Drawing.Color selectionBackColor;
public System.Drawing.Color SelectionBackColor
{
get
{
return selectionBackColor;
}
set
{
selectionBackColor = value;
}
}
private System.Drawing.Color alternatingBackColor;
public System.Drawing.Color AlternatingBackColor
{
get
{
return alternatingBackColor;
}
set
{
alternatingBackColor = value;
}
}
}
}
先说下我对prototype的疑虑：
1、MS并没有将TableStyle做成可以clone的，可见这个东西不适合clone；
2、TableStyle太复杂，clone起来自然也简单不了，基本解决不了问题在clone里，还是乱七八糟。
唉，不知道怎么，坐在电脑前永远也想不了问题，习惯性的在键盘上狂敲而已。
下面看看我的不伦不类的Builder吧，赫赫，见笑了
。
Copyright (c) runmin#region Copyright (c) runmin/**//* * Copyright (c) runmin@tom.com * Sample code, created on 2004-12-15 8:57:15 by runmin. * */#endregion CopyrightUsing directives#region Using directivesusing System.Windows.Forms;#endregionnamespace Runmin.Sample{ /**//// <summary> /// Returns an instance of System.Windows.Forms.DataGridTableStyle class. /// </summary> public interface ITableStyleBuilder { /**//// <summary> /// The builder method. /// </summary> /// <returns>TableStyle instance</returns> DataGridTableStyle BuildStyle(string theMappingName); } public class DefaultTableStyleBuilder : ITableStyleBuilder { private DisplayStyle displayStyle; public DisplayStyle DisplayStyle { get { return this.displayStyle; } set { this.displayStyle = value; } } private DataGridColumnStyle gridColumnStyle; public DataGridColumnStyle GridColumnStyle { get { return this.gridColumnStyle; } set { this.gridColumnStyle = value; } } public virtual DataGridTableStyle BuildStyle(string theMappingName) { DataGridTableStyle theTableStyle = new DataGridTableStyle(); theTableStyle.MappingName = theMappingName; theTableStyle.ForeColor = theTableStyle.HeaderForeColor = theTableStyle.SelectionForeColor = this.displayStyle.ForeColor; theTableStyle.BackColor = this.displayStyle.BackColor; theTableStyle.HeaderBackColor = this.displayStyle.HeaderBackColor; theTableStyle.GridLineColor = this.displayStyle.GridLineColor; theTableStyle.SelectionBackColor = this.displayStyle.SelectionBackColor; return theTableStyle; } } public struct DisplayStyle { private System.Drawing.Color backColor; public System.Drawing.Color BackColor { get { return backColor; } set { backColor = value; } } private System.Drawing.Color foreColor; public System.Drawing.Color ForeColor { get { return foreColor; } set { foreColor = value; } } private System.Drawing.Color gridLineColor; public System.Drawing.Color GridLineColor { get { return gridLineColor; } set { gridLineColor = value; } } private System.Drawing.Color headerBackColor; public System.Drawing.Color HeaderBackColor { get { return headerBackColor; } set { headerBackColor = value; } } private System.Drawing.Color selectionBackColor; public System.Drawing.Color SelectionBackColor { get { return selectionBackColor; } set { selectionBackColor = value; } } private System.Drawing.Color alternatingBackColor; public System.Drawing.Color AlternatingBackColor { get { return alternatingBackColor; } set { alternatingBackColor = value; } } }}