MOSS字段編輯權限控制方案的實現(1)-管理頁面的開發和配置信息的持久化

MOSS字段編輯權限控制方案，實現了控制列表項，或文檔屬性的字段級權限控制，本篇講述如何開發配置頁面以及如何將配置信息持久化。

我們先看一下配置界面的樣子：

wss（moss）的所有配置頁面都放到C:/Program Files/Common Files/Microsoft Shared/web server extensions/12/TEMPLATE/LAYOUTS目錄
或子目錄中，我們將字段權限配置頁面（FieldEditControl.aspx）放到Layouts的子目錄CodeArt中。
配置界面的核心邏輯開發成一個webcontrol（FieldRightSettingPart），將這個webpart直接嵌入到管理頁面，管理頁面的代碼如下：

<%@ Assembly Name="Microsoft.SharePoint.ApplicationPages, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c"%>

<%@ Page Language="C#" Inherits="Microsoft.SharePoint.ApplicationPages.NewListPage" MasterPageFile="~/_layouts/application.master" %>

<%@ Import Namespace="Microsoft.SharePoint.ApplicationPages" %> <%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> <%@ Register Tagprefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> <%@ Import Namespace="Microsoft.SharePoint" %>

<%@ Register Tagprefix="WebPartPages" Namespace="Microsoft.SharePoint.WebPartPages" Assembly="Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

<%@ Register Assembly="CodeArt.SharePoint, Version=1.0.0.0, Culture=neutral, PublicKeyToken=2c606279787b575f" Namespace="CodeArt.SharePoint.WebPart" TagPrefix="codeArt" %>

<asp:Content ContentPlaceHolderId="PlaceHolderPageTitleInTitleArea" runat="server">

列表字段權限設置

</asp:Content>

<asp:Content ID="Content6" ContentPlaceHolderId="PlaceHolderMain" runat="server">

<codeArt:FieldRightSettingPart runat="server" id="fSetting" />

</asp:Content>

wss開發中經常會碰到配置信息存儲的問題，如果是webpart，我們可以用webpart的屬性來存儲，其他情況下，我們可以考慮用數據庫或List來存儲。
這裏我選擇用文檔庫來存儲，將配置類序列化成xml存儲到一個文檔庫中。考慮到以後還會碰到這類配置信息存儲的情況，把這個功能開發成一個通用的類CongfigManager:(爲了以後“可能的”替換數據存儲方式，用了工程模式)

public abstract class ConfigManager

{

public static ConfigManager GetConfigManager(string key)

{

return new DocLibConfigManager( key );

}

public virtual T GetConfigData<T>(Guid id) where T : class , new()

{

object obj = this.GetConfigData(typeof(T), id);

if( obj == null )

return null;

return

(T)obj;

}

public virtual object GetConfigData(Type t, Guid id)

{

return null ;

}

public virtual void SetConfigData(Guid id , object obj)

{

}

public virtual void ClearConfigData(Guid id)

{

}

class DocLibConfigManager : ConfigManager

{

private string _key;

public DocLibConfigManager(string key)

{

_key = key;

}

SPList EnsureList(SPWeb web)

{

SPList list = null;

try

{

list = web.Lists[_key];

}

catch { }

if (list == null)

{

web.AllowUnsafeUpdates = true;

Guid listId = web.Lists.Add(_key, "List for config , never delete this list.", SPListTemplateType.DocumentLibrary);

list = web.Lists[listId];

}

return list;

}

public override void SetConfigData( Guid id ,object obj)

{

SPList list = null;

string xml = SerializeUtil.Seralize(obj);

byte[] content = Encoding.UTF8.GetBytes(xml);

SPSecurity.RunWithElevatedPrivileges(delegate()

{

using (SPSite elevatedsiteColl = new SPSite(SPContext.Current.Site.ID))

{

using (SPWeb elevatedWeb = elevatedsiteColl.OpenWeb(SPContext.Current.Web.ID))

{

list = this.EnsureList(elevatedWeb);

elevatedWeb.AllowUnsafeUpdates = true;

SPFile file = list.RootFolder.Files.Add( id.ToString() + ".xml", content, true);

}

});

}

private SPListItem GetItem(SPList list, Guid id)

{

SPQuery q = new SPQuery();

q.Query = "<Where><Eq><FieldRef Name='FileLeafRef'/><Value Type='Text'>" + id.ToString() + ".xml</Value></Eq></Where>";

q.RowLimit = 1;

SPListItemCollection items = list.GetItems(q);

if (items.Count == 0)

return null;

else

return items[0];

}

public override void ClearConfigData(Guid id)

{

SPSecurity.RunWithElevatedPrivileges(delegate()

{

using (SPSite elevatedsiteColl = new SPSite(SPContext.Current.Site.ID))

{

using (SPWeb elevatedWeb = elevatedsiteColl.OpenWeb(SPContext.Current.Web.ID))

{

try

{

SPList list = this.EnsureList(elevatedWeb);

elevatedWeb.AllowUnsafeUpdates = true;

SPListItem item = this.GetItem(list, id);

if( item != null )

item.Delete();

}

catch { throw; }

}

});

}

public override object GetConfigData(Type t, Guid id)

{

object obj = null;

SPSecurity.RunWithElevatedPrivileges(delegate()

{

using (SPSite elevatedsiteColl = new SPSite(SPContext.Current.Site.ID))

{

using (SPWeb elevatedWeb = elevatedsiteColl.OpenWeb(SPContext.Current.Web.ID))

{

SPList list = this.EnsureList(elevatedWeb);

try

{

SPListItem item = this.GetItem(list, id);

if (item != null)

{

SPFile file = item.File;

XmlDocument doc = new XmlDocument();

doc.Load(item.File.OpenBinaryStream());

obj = SerializeUtil.Deserialize(t, doc.OuterXml);

}

catch { throw; }

}

});

return obj;

}

這個CongfigManager實現了對一個配置類的保存，獲取和刪除。

下面考慮配置類如何抽象化
用以下類來表示每個字段的配置信息：

[Serializable]

public class FieldEditSetting

{

public string FieldName;

public bool CreatorCanEdit;

public bool AllUserCanEdit ;

public string SpecialAccounts;

public bool IsInSpecialAccounts(string account)

{

if (String.IsNullOrEmpty(SpecialAccounts))

return false;

string checkList = "," + this.SpecialAccounts.ToLower() + ",";

return checkList.IndexOf("," + account.ToLower() + ",") != -1;

}

public bool CanEdit( SPUser currentUser , SPUser creatUser )

{

//if (currentUser.IsSiteAdmin) return true;

if (this.AllUserCanEdit) return true;

if (this.CreatorCanEdit && String.Compare(currentUser.LoginName, creatUser.LoginName, true) == 0)

return true;

return this.IsInSpecialAccounts(currentUser.LoginName);

}

用一個集合類來表示整個列表的所有字段的配置信息（本來想用字典的，單字典類型不能序列化，這能放棄）：

[Serializable]

public class ListFieldEditSetting : List<FieldEditSetting>

{

public const string Config_List = "__CodeArt_ListFieldEditSetting";

public FieldEditSetting GetByFieldName(string fieldName)

{

foreach (FieldEditSetting fSetting in this)

{

if (String.Compare(fSetting.FieldName, fieldName, true) == 0)

return fSetting;

}

return null;

}

public void Save(Guid listId)

{

ConfigManager cmg = ConfigManager.GetConfigManager(ListFieldEditSetting.Config_List);

cmg.SetConfigData(listId, this);

}

public static ListFieldEditSetting GetListSetting(Guid listId)

{

ConfigManager cmg = ConfigManager.GetConfigManager(ListFieldEditSetting.Config_List);

ListFieldEditSetting setting = cmg.GetConfigData<ListFieldEditSetting>(listId);

return setting;

}

以上的基礎類建好了，可以開始FieldRightSettingPart的開發了：

FieldRightSettingPart 的代碼

public class FieldRightSettingPart : BaseSPListWebPart

{

private Button _btnSubmit;

private Table _layoutTable;

private Dictionary<string, CheckBox> _AllUserCanEditControls = new Dictionary<string, CheckBox>();

private Dictionary<string, CheckBox> _CreatorCanEditControls = new Dictionary<string, CheckBox>();

private Dictionary<string, Microsoft.SharePoint.WebControls.PeopleEditor> _SpecialAccountsControls =

new Dictionary<string, Microsoft.SharePoint.WebControls.PeopleEditor>();

protected override void CreateChildControls()

{

if (List == null)

return;

_layoutTable = new Table ();

_layoutTable.BorderWidth = new Unit("0px");

_layoutTable.CssClass = "ms-formtable";

_layoutTable.CellSpacing = 0;

this.Controls.Add(_layoutTable);

this.AddRow(_layoutTable, "字段", "編輯權限");

ConfigManager cmg = ConfigManager.GetConfigManager(ListFieldEditSetting.Config_List);

ListFieldEditSetting setting = cmg.GetConfigData<ListFieldEditSetting>(List.ID);

foreach (SPField f in List.Fields)

{

if (f.Hidden || f.ReadOnlyField ) continue ;

TableRow row = new TableRow();

_layoutTable.Rows.Add(row);

TableCell fieldCell = new TableCell();

fieldCell.VerticalAlign = VerticalAlign.Top;

fieldCell.CssClass = "ms-formlabel";

row.Cells.Add(fieldCell);

fieldCell.Text = f.Title + f.AuthoringInfo;

TableCell ctlCell = new TableCell();

ctlCell.VerticalAlign = VerticalAlign.Top;

ctlCell.CssClass = "ms-formbody";

row.Cells.Add(ctlCell);

CheckBox allUser = new CheckBox();

allUser.Text = "所有人員";

allUser.Checked = true;

ctlCell.Controls.Add(allUser);

this.AddHtml(" ", ctlCell);

_AllUserCanEditControls.Add(f.InternalName, allUser);

CheckBox creator = new CheckBox();

creator.Text = "創建者";

creator.Checked = true;

ctlCell.Controls.Add(creator);

this.AddHtml(" ", ctlCell);

_CreatorCanEditControls.Add(f.InternalName, creator);

this.AddHtml("指定人員： ", ctlCell );

Microsoft.SharePoint.WebControls.PeopleEditor peopleEditor = new Microsoft.SharePoint.WebControls.PeopleEditor();

peopleEditor.MultiSelect = true;

peopleEditor.Rows = 1;

peopleEditor.Width = new Unit("200px");

ctlCell.Controls.Add(peopleEditor);

_SpecialAccountsControls.Add(f.InternalName, peopleEditor);

this.SetControlValue(allUser, creator, peopleEditor, setting, f.InternalName);

}

_btnSubmit = new Button();

_btnSubmit.ID = "btn1";

_btnSubmit.Text = "確定";

_btnSubmit.CssClass = "ms-ButtonHeightWidth";

this.Controls.Add(_btnSubmit);

_btnSubmit.Click += new EventHandler(_btnSubmit_Click);

}

void SetControlValue(CheckBox allUser, CheckBox creator, Microsoft.SharePoint.WebControls.PeopleEditor peopleEditor ,ListFieldEditSetting setting , string fieldName )

{

if (setting == null || setting.Count == 0 || Page.IsPostBack )

return ;

FieldEditSetting set = setting.GetByFieldName(fieldName);

if (set == null) return;

allUser.Checked = set.AllUserCanEdit;

creator.Checked = set.CreatorCanEdit;

peopleEditor.CommaSeparatedAccounts = set.SpecialAccounts;

}

void _btnSubmit_Click(object sender, EventArgs e)

{

ListFieldEditSetting setting = new ListFieldEditSetting();

foreach (SPField f in List.Fields)

{

if (f.Hidden || f.ReadOnlyField) continue;

FieldEditSetting set = new FieldEditSetting();

setting.Add(set);

set.FieldName = f.InternalName.ToLower();

CheckBox allUser = _AllUserCanEditControls[f.InternalName];

set.AllUserCanEdit = allUser.Checked;

CheckBox creator = _CreatorCanEditControls[f.InternalName];

set.CreatorCanEdit = creator.Checked;

Microsoft.SharePoint.WebControls.PeopleEditor peopleEditor = _SpecialAccountsControls[f.InternalName];

set.SpecialAccounts = peopleEditor.CommaSeparatedAccounts;

}

setting.Save(base.List.ID);

if (Page.Request.QueryString["ListId"] != null)

{

string sourceUrl = base.Web.ServerRelativeUrl + "_layouts/listedit.aspx?List=" + base.List.ID.ToString("B").ToUpper();

Page.Response.Redirect(sourceUrl);

}

//ConfigManager cmg = ConfigManager.GetConfigManager(ListFieldEditSetting.Config_List);

//cmg.SetConfigData(List.ID, setting);

}

//void AddRow( Table table , params Control[] ctls)

//{

// TableRow row = new TableRow();

// table.Rows.Add(row);

// foreach (Control c in ctls)

// {

// TableCell cell = new TableCell();

// row.Cells.Add(cell);

// cell.Controls.Add(c);

// }

//}

void AddRow(Table table, params string[] texts)

{

TableRow row = new TableRow();

table.Rows.Add(row);

foreach (string c in texts)

{

TableCell cell = new TableCell();

row.Cells.Add(cell);

cell.Text = c;

}

FieldRightSettingPart會在內部生成一個佈局表格和很多的子控件，爲了便於操作這些子控件，
聲明瞭三個字典類型的變量，來放置生成的控件，字典key爲字段名，值爲對應的編輯控件：

private Dictionary<string, CheckBox> _AllUserCanEditControls = new Dictionary<string, CheckBox>();

private Dictionary<string, CheckBox> _CreatorCanEditControls = new Dictionary<string, CheckBox>();

private Dictionary<string, Microsoft.SharePoint.WebControls.PeopleEditor> _SpecialAccountsControls =

new Dictionary<string, Microsoft.SharePoint.WebControls.PeopleEditor>();

在CreateChildControls，遍歷列表的字段，生成設置界面，同時若已經存在配置信息，則按照配置信息初始化控件初始值：

CreateChildControls

protected override void CreateChildControls()

{

if (List == null)

return;

_layoutTable = new Table ();

_layoutTable.BorderWidth = new Unit("0px");

_layoutTable.CssClass = "ms-formtable";

_layoutTable.CellSpacing = 0;

this.Controls.Add(_layoutTable);

this.AddRow(_layoutTable, "字段", "編輯權限");

ConfigManager cmg = ConfigManager.GetConfigManager(ListFieldEditSetting.Config_List);

ListFieldEditSetting setting = cmg.GetConfigData<ListFieldEditSetting>(List.ID);

foreach (SPField f in List.Fields)

{

if (f.Hidden || f.ReadOnlyField ) continue ;

TableRow row = new TableRow();

_layoutTable.Rows.Add(row);

TableCell fieldCell = new TableCell();

fieldCell.VerticalAlign = VerticalAlign.Top;

fieldCell.CssClass = "ms-formlabel";

row.Cells.Add(fieldCell);

fieldCell.Text = f.Title + f.AuthoringInfo;

TableCell ctlCell = new TableCell();

ctlCell.VerticalAlign = VerticalAlign.Top;

ctlCell.CssClass = "ms-formbody";

row.Cells.Add(ctlCell);

CheckBox allUser = new CheckBox();

allUser.Text = "所有人員";

allUser.Checked = true;

ctlCell.Controls.Add(allUser);

this.AddHtml(" ", ctlCell);

_AllUserCanEditControls.Add(f.InternalName, allUser);

CheckBox creator = new CheckBox();

creator.Text = "創建者";

creator.Checked = true;

ctlCell.Controls.Add(creator);

this.AddHtml(" ", ctlCell);

_CreatorCanEditControls.Add(f.InternalName, creator);

this.AddHtml("指定人員： ", ctlCell );

Microsoft.SharePoint.WebControls.PeopleEditor peopleEditor = new Microsoft.SharePoint.WebControls.PeopleEditor();

peopleEditor.MultiSelect = true;

peopleEditor.Rows = 1;

peopleEditor.Width = new Unit("200px");

ctlCell.Controls.Add(peopleEditor);

_SpecialAccountsControls.Add(f.InternalName, peopleEditor);

this.SetControlValue(allUser, creator, peopleEditor, setting, f.InternalName);

}

_btnSubmit = new Button();

_btnSubmit.ID = "btn1";

_btnSubmit.Text = "確定";

_btnSubmit.CssClass = "ms-ButtonHeightWidth";

this.Controls.Add(_btnSubmit);

_btnSubmit.Click += new EventHandler(_btnSubmit_Click);

}

按鈕提交時，遍歷編輯子控件，組裝配置類，調用ConfigManage類保存數據。：

_btnSubmit_Click

game over！

附1：存放配置信息的文檔庫：

附2：配置信息序列化後的xml格式：

<?xml version="1.0" encoding="utf-8"?>

<FieldName>fileleafref</FieldName>

<CreatorCanEdit>false</CreatorCanEdit>

<AllUserCanEdit>false</AllUserCanEdit>

<FieldName>title</FieldName>

<CreatorCanEdit>false</CreatorCanEdit>

<AllUserCanEdit>false</AllUserCanEdit>

</ArrayOfFieldEditSetting>

本系列的所有文章：
CodeArt WSS3.0（MOSS）字段編輯權限控制解決方案(v1.0)
CodeArt WSS3.0（MOSS）字段編輯權限控制解決方案的實現 -- 概要
MOSS字段編輯權限控制方案的實現(1)-管理頁面的開發和配置信息的持久化
WSS頁面定製系列（2）---定製單個列表的表單頁面
WSS頁面定製系列（3）---重寫表單的保存邏輯
MOSS字段編輯權限控制方案(4)-打包解決方案

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