一个简单的基于XML的模块集成框架

2008-10-29 14:10 稿源:12it.net  0条评论

1. 准备一个xml文件

以下为引用的内容:

xmlmenu
 1<Menu>
 2    <MenuItem Name="系统管理" AssemblyName="" FormTag="FALSE" AddToolbar="FALSE">
 3        <MenuItem Name="权限管理" ShortCut="" Image="" AssemblyName="" FormTag="FALSE" AddToolButton="FALSE">
 4            <MenuItem Name="系统权限管理" ShortCut="" Image="password.png" AssemblyName="HustCAD.IntePLM.WinUI.FrmSysRight,IntePLM.TyRightWinUI" FormTag="TRUE" AddToolButton="FALSE"/>
 5            <MenuItem Name="权限规则定义" ShortCut="" Image="right.png" AssemblyName="HustCAD.IntePLM.WinUI.FrmRightRule,IntePLM.TyRightWinUI" FormTag="TRUE" AddToolButton="FALSE"/>
 6            <MenuItem Name="权限日志" ShortCut="" Image="doc_yellow_edit.png" AssemblyName="HustCAD.IntePLM.WinUI.FrmRightLog,IntePLM.TyRightWinUI" FormTag="TRUE" AddToolButton="FALSE"/>
 7        </MenuItem>
8</Menu>
2.准备一个xml schemal文件来验证xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!-- edited with XMLSpy v2006 sp2 U (http://www.altova.com) by peter (hust) -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
    <xs:element name="Menu">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="MenuItem" maxOccurs="unbounded"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
    <xs:element name="MenuItem">
        <xs:complexType>
            <xs:sequence>
                <xs:element ref="MenuItem" minOccurs="0" maxOccurs="unbounded"/>
            </xs:sequence>
            <xs:attribute name="AddToolButton">
                <xs:simpleType>
                    <xs:restriction base="xs:string">
                        <xs:enumeration value="TRUE"/>
                        <xs:enumeration value="FALSE"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="AddToolbar">
                <xs:simpleType>
                    <xs:restriction base="xs:string">
                        <xs:enumeration value="TRUE"/>
                        <xs:enumeration value="FALSE"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="AssemblyName" type="xs:string" use="required"/>
            <xs:attribute name="FormTag" use="required">
                <xs:simpleType>
                    <xs:restriction base="xs:string">
                        <xs:enumeration value="TRUE"/>
                        <xs:enumeration value="FALSE"/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
            <xs:attribute name="Image" type="xs:string"/>
            <xs:attribute name="Name" type="xs:string" use="required"/>
            <xs:attribute name="ShortCut" use="optional">
                <xs:simpleType>
                    <xs:restriction base="xs:string">
                        <xs:enumeration value="F1"/>
                        <xs:enumeration value="F2"/>
                        <xs:enumeration value="F3"/>
                        <xs:enumeration value="F4"/>
                        <xs:enumeration value="F5"/>
                        <xs:enumeration value="F6"/>
                        <xs:enumeration value="F7"/>
                        <xs:enumeration value="F8"/>
                        <xs:enumeration value="F9"/>
                        <xs:enumeration value="F10"/>
                        <xs:enumeration value="F11"/>
                        <xs:enumeration value="F12"/>
                        <xs:enumeration value="Alt0"/>
                        <xs:enumeration value="Alt1"/>
                        <xs:enumeration value="Alt2"/>
                        <xs:enumeration value="Alt3"/>
                        <xs:enumeration value="Alt4"/>
                        <xs:enumeration value="Alt5"/>
                        <xs:enumeration value="Alt6"/>
                        <xs:enumeration value="Alt7"/>
                        <xs:enumeration value="Alt8"/>
                        <xs:enumeration value="Alt9"/>
                        <xs:enumeration value="AltBksp"/>
                        <xs:enumeration value="AltF1"/>
                        <xs:enumeration value="AltF2"/>
                        <xs:enumeration value="AltF3"/>
                        <xs:enumeration value="AltF4"/>
                        <xs:enumeration value="AltF5"/>
                        <xs:enumeration value="AltF6"/>
                        <xs:enumeration value="AltF7"/>
                        <xs:enumeration value="AltF8"/>
                        <xs:enumeration value="AltF9"/>
                        <xs:enumeration value="AltF10"/>
                        <xs:enumeration value="AltF11"/>
                        <xs:enumeration value="AltF12"/>
                        <xs:enumeration value="AltDownArrow"/>
                        <xs:enumeration value="AltUpArrow"/>
                        <xs:enumeration value="AltLeftArrow"/>
                        <xs:enumeration value="AltRightArrow"/>
                        <xs:enumeration value="Ctrl0"/>
                        <xs:enumeration value="Ctrl1"/>
                        <xs:enumeration value="Ctrl2"/>
                        <xs:enumeration value="Ctrl3"/>
                        <xs:enumeration value="Ctrl4"/>
                        <xs:enumeration value="Ctrl5"/>
                        <xs:enumeration value="Ctrl6"/>
                        <xs:enumeration value="Ctrl7"/>
                        <xs:enumeration value="Ctrl8"/>
                        <xs:enumeration value="Ctrl9"/>
                        <xs:enumeration value="CtrlA"/>
                        <xs:enumeration value="CtrlB"/>
                        <xs:enumeration value="CtrlC"/>
                        <xs:enumeration value="CtrlD"/>
                        <xs:enumeration value="CtrlE"/>
                        <xs:enumeration value="CtrlF"/>
                        <xs:enumeration value="CtrlG"/>
                        <xs:enumeration value="CtrlH"/>
                        <xs:enumeration value="CtrlI"/>
                        <xs:enumeration value="CtrlJ"/>
                        <xs:enumeration value="CtrlK"/>
                        <xs:enumeration value="CtrlL"/>
                        <xs:enumeration value="CtrlM"/>
                        <xs:enumeration value="CtrlN"/>
                        <xs:enumeration value="CtrlO"/>
                        <xs:enumeration value="CtrlP"/>
                        <xs:enumeration value="CtrlQ"/>
                        <xs:enumeration value="CtrlR"/>
                        <xs:enumeration value="CtrlS"/>
                        <xs:enumeration value="CtrlT"/>
                        <xs:enumeration value="CtrlU"/>
                        <xs:enumeration value="CtrlV"/>
                        <xs:enumeration value="CtrlX"/>
                        <xs:enumeration value="CtrlY"/>
                        <xs:enumeration value="CtrlZ"/>
                        <xs:enumeration value="CtrlF1"/>
                        <xs:enumeration value="CtrlF2"/>
                        <xs:enumeration value="CtrlF3"/>
                        <xs:enumeration value="CtrlF4"/>
                        <xs:enumeration value="CtrlF5"/>
                        <xs:enumeration value="CtrlF6"/>
                        <xs:enumeration value="CtrlF7"/>
                        <xs:enumeration value="CtrlF8"/>
                        <xs:enumeration value="CtrlF9"/>
                        <xs:enumeration value="CtrlF10"/>
                        <xs:enumeration value="CtrlF11"/>
                        <xs:enumeration value="CtrlF12"/>
                        <xs:enumeration value="CtrlIns"/>
                        <xs:enumeration value="CtrlShift0"/>
                        <xs:enumeration value="CtrlShift1"/>
                        <xs:enumeration value="CtrlShift2"/>
                        <xs:enumeration value="CtrlShift3"/>
                        <xs:enumeration value="CtrlShift4"/>
                        <xs:enumeration value="CtrlShift5"/>
                        <xs:enumeration value="CtrlShift6"/>
                        <xs:enumeration value="CtrlShift7"/>
                        <xs:enumeration value="CtrlShift8"/>
                        <xs:enumeration value="CtrlShift9"/>
                        <xs:enumeration value="CtrlShiftA"/>
                        <xs:enumeration value="CtrlShiftB"/>
                        <xs:enumeration value="CtrlShiftC"/>
                        <xs:enumeration value="CtrlShiftD"/>
                        <xs:enumeration value="CtrlShiftE"/>
                        <xs:enumeration value="CtrlShiftF"/>
                        <xs:enumeration value="CtrlShiftG"/>
                        <xs:enumeration value="CtrlShiftH"/>
                        <xs:enumeration value="CtrlShiftI"/>
                        <xs:enumeration value="CtrlShiftJ"/>
                        <xs:enumeration value="CtrlShiftK"/>
                        <xs:enumeration value="CtrlShiftL"/>
                        <xs:enumeration value="CtrlShiftM"/>
                        <xs:enumeration value="CtrlShiftN"/>
                        <xs:enumeration value="CtrlShiftO"/>
                        <xs:enumeration value="CtrlShiftP"/>
                        <xs:enumeration value="CtrlShiftQ"/>
                        <xs:enumeration value="CtrlShiftR"/>
                        <xs:enumeration value="CtrlShiftS"/>
                        <xs:enumeration value="CtrlShiftT"/>
                        <xs:enumeration value="CtrlShiftU"/>
                        <xs:enumeration value="CtrlShiftV"/>
                        <xs:enumeration value="CtrlShiftW"/>
                        <xs:enumeration value="CtrlShiftX"/>
                        <xs:enumeration value="CtrlShiftY"/>
                        <xs:enumeration value="CtrlShiftZ"/>
                        <xs:enumeration value="ShiftIns"/>
                        <xs:enumeration value="ShiftF1"/>
                        <xs:enumeration value="ShiftF2"/>
                        <xs:enumeration value="ShiftF3"/>
                        <xs:enumeration value="ShiftF4"/>
                        <xs:enumeration value="ShiftF5"/>
                        <xs:enumeration value="ShiftF6"/>
                        <xs:enumeration value="ShiftF7"/>
                        <xs:enumeration value="ShiftF8"/>
                        <xs:enumeration value="ShiftF9"/>
                        <xs:enumeration value="ShiftF10"/>
                        <xs:enumeration value="ShiftF11"/>
                        <xs:enumeration value="ShiftF12"/>
                        <xs:enumeration value=""/>
                    </xs:restriction>
                </xs:simpleType>
            </xs:attribute>
        </xs:complexType>
    </xs:element>
</xs:schema>

3。定义一个类来加载菜单

public class MenuLoad
    {
        private PluginCollection m_plugins = null;
        public MenuBar _menbar = new MenuBar();
        public ToolStrip _toolbar = new ToolStrip();
        private OutlookBar bar = new OutlookBar();
        private ImageList imglist = new ImageList();
        private StringBuilder builder = new StringBuilder();

        public MenuLoad()
        {
            bar = _menbar.outlookBar;
        }

        private TabControl tabCtrl;
        public TabControl TabCtrl
        {
            set
            {
                tabCtrl = value;
            }
        }

        private void ValidationEventHandler(object sender, ValidationEventArgs e)
        {
            builder.AppendLine("验证XML文档的时候发生错误:");
            builder.AppendLine("严重级别:" + e.Severity);
            builder.AppendLine("错误信息:" + e.Message);
            builder.AppendLine("------+--------+-------+------+--------+-------+------+--------+-------+");
            builder.AppendLine();
        }

        /**//// <summary>
        /// 验证XML文件是否是合乎规范的文件
        /// </summary>
        /// <param name="xmlfile">文件名称</param>
        /// <returns>是则返回true,否则返回false</returns>
        private bool ValidateXml(string xmlfile)
        {
            bool validXml = false;
            string spath = "";

            spath = Application.StartupPath + "\\configurations\\XMLSMenu.xsd";
            if(!System.IO.File.Exists(spath))
            {
                throw new System.IO.FileNotFoundException(String.Format(Resources.StringFileNotFound, spath));
            }

            XmlReaderSettings settings = new XmlReaderSettings();
            XmlSchemaSet schemaSet = new XmlSchemaSet();
            schemaSet.Add(null, spath);
            settings.Schemas.Add(schemaSet);
            settings.ValidationType = ValidationType.Schema;
            settings.ValidationEventHandler += new ValidationEventHandler(ValidationEventHandler);
            settings.ValidationFlags = settings.ValidationFlags | XmlSchemaValidationFlags.ReportValidationWarnings;

            XmlReader reader = XmlReader.Create(xmlfile, settings);


            while(reader.Read())
            {

            }
           
            if(builder.Length > 0)
            {
                validXml = false;
            }
            else
            {
                validXml = true;
            }
            reader.Close();
            return validXml;

        }
        /**//// <summary>
        /// 加载菜单
        /// </summary>
        /// <param name="main">主菜单</param>
        /// <param name="xmlfile">菜单定义文件</param>
        public MainMenu LoadMenus(string xmlfile)
        {
            MainMenu mainmenu = new MainMenu();
           
            try
            {
                using(new WaitCursor())
                {
                    //验证XML是否是合乎规范的XML文件
                    if(ValidateXml(xmlfile))
                    {
                        XmlDocument document = new XmlDocument();
                        document.Load(xmlfile);

                        XmlNode rootNode = document.DocumentElement;
                        mainmenu = GetMenus(rootNode);  
                    }
                    else
                    {
                        throw new Exception(builder.ToString());
                    }
                }
            }
            catch (System.IO.FileNotFoundException)
            {
                Utility.ShowErrorMsg(String.Format(Resources.StringFileNotFound, xmlfile));
            }

            return mainmenu;
        }

        /**//// <summary>
        /// 加载菜单
        /// </summary>
        /// <param name="main">主菜单</param>
        /// <param name="node">菜单项节点</param>
        private MainMenu GetMenus(XmlNode node)
        {
            MainMenu mainmenu = new MainMenu();
            List<XmlNode> nodelist= new List<XmlNode>();
            List<OfficeMenuItem> mnulist = new List<OfficeMenuItem>();
            List<IconPanel> iplist = new List<IconPanel>();
            string menutext ="";
            //首先加载主菜单,避免迭代的时候菜单显示的过分延迟。
            foreach(XmlNode child in node.ChildNodes)
            {
                if(child.NodeType == XmlNodeType.Element && child.Name == "MenuItem")
                {
                    menutext = child.Attributes["Name"].Value;
                    OfficeMenuItem item = new OfficeMenuItem(true,menutext);
                    mainmenu.MenuItems.Add(item);
                    IconPanel cp = new IconPanel();
                    bar.AddBand(menutext, cp);
                    nodelist.Add(child);
                    mnulist.Add(item);
                    iplist.Add(cp);
                }
            }
            //加载所有的子菜单
            GetSubMenus(iplist.ToArray(),mnulist.ToArray(), nodelist.ToArray());
            return mainmenu;
        }

        /**//// <summary>
        /// 加载所有子菜单
        /// </summary>
        /// <param name="main">主菜单集合</param>
        /// <param name="node">菜单节点集合</param>
        private void GetSubMenus(IconPanel[] iplist ,OfficeMenuItem[] main, XmlNode[] node)
        {
            EventHandler handler = new EventHandler(OnPluginClick);
            EventHandler handler1 = new EventHandler(OnIconClick);
            EventHandler handler2 = new EventHandler(OnButtonClick);
            string asmname;
            string formtag;
            string text;
            MenuClass mc;
            XmlNode child;
            string iconpath = "";
            string iconname = "";
            string msc = "";
            for(int i = 0; i <= main.GetUpperBound(0); i++)
            {
                //foreach(XmlNode child in node[i].ChildNodes)
                for(int j = 0; j < node[i].ChildNodes.Count;j++ )
                {
                    child = node[i].ChildNodes[j];
                    if(child.NodeType == XmlNodeType.Element && child.Name == "MenuItem")
                    {
                        asmname = child.Attributes["AssemblyName"].Value;
                        formtag = child.Attributes["FormTag"].Value;
                        text = child.Attributes["Name"].Value;
                        msc = child.Attributes["ShortCut"].Value;
                        OfficeMenuItem item = new OfficeMenuItem(true, text, handler);
                        iconname = child.Attributes["Image"].Value;
                        if(iconname != string.Empty)
                        {
                            iconpath = Themes.GetCurrentThemePath() +iconname;
                            item.IconPath = iconpath;
                           
                        }
                        mc = new MenuClass();
                        mc.Assemblyname = asmname;
                        mc.FormTag = formtag;

                        item.Tag = mc;

                        if(msc != string.Empty)
                        {
                            item.Shortcut = MenuShortCut.GetShortCut(msc);
                        }

                        main[i].MenuItems.Add(item);

                        if((iconpath != string.Empty) && System.IO.File.Exists(iconpath))
                        {    //添加按钮到OutlookBar                       
                            PanelIcon picon = iplist[i].AddIcon(item.Text,Image.FromFile(iconpath),handler1);
                            picon.Tag = mc;
                            //添加按钮到toolbar
                            ToolStripButton button = new ToolStripButton(item.Text, Image.FromFile(iconpath), handler2);
                            button.DisplayStyle = ToolStripItemDisplayStyle.Image;
                            button.ToolTipText = item.Text;
                            button.Tag = mc;
                            button.Visible = true;
                            _toolbar.Items.Add(button);
                        }

                        iconpath = "";
                        mc = null;

                        if(child.ChildNodes.Count > 0)
                        {
                            GetChildMenu(iplist[i],item, child);
                        }
                    }
                }
                //添加分割线
                ToolStripSeparator ss = new ToolStripSeparator();
                _toolbar.Items.Add(ss);
            }
        }

        /**//// <summary>
        /// 加载子菜单
        /// </summary>
        /// <param name="parent">父菜单</param>
        /// <param name="node">父菜单定义XML节点</param>
        private void GetChildMenu(IconPanel ip,OfficeMenuItem parent, XmlNode node)
        {
            EventHandler handler = new EventHandler(OnPluginClick);
            EventHandler handler1 = new EventHandler(OnIconClick);
            EventHandler handler2 = new EventHandler(OnButtonClick);

            MenuClass mc;
            string asmname;
            string formtag;
            string text;
            XmlNode child1;
            string iconpath = "";
            string iconname = "";
            string msc = "";
            //foreach(XmlNode child1 in node.ChildNodes)
            for(int i = 0; i < node.ChildNodes.Count - 1;i++ )
            {
                child1 = node.ChildNodes[i];
                //检查是否提供了类型
                asmname = child1.Attributes["AssemblyName"].Value;
                formtag = child1.Attributes["FormTag"].Value;
                text = child1.Attributes["Name"].Value;
                OfficeMenuItem childitem;

                childitem = new OfficeMenuItem(true, text, handler);
                childitem.Name = text;
                mc = new MenuClass();
                mc.Assemblyname = asmname;
                mc.FormTag = formtag;
               
                childitem.Tag = mc;
                //添加快捷键
                msc = child1.Attributes["ShortCut"].Value;
                if(msc != string.Empty)
                {
                    childitem.Shortcut = MenuShortCut.GetShortCut(msc);
                }
                //添加图标
                iconname = child1.Attributes["Image"].Value;
                if(iconname != string.Empty)
                {
                    iconpath = Themes.GetCurrentThemePath() + iconname;
                    childitem.IconPath = iconpath;
                }

                parent.MenuItems.Add(childitem);

                if((iconpath != string.Empty) && System.IO.File.Exists(iconpath))
                {    //添加按钮到OutlookBar                       
                    PanelIcon picon = ip.AddIcon(childitem.Text, Image.FromFile(iconpath), handler1);
                    picon.Tag = mc;
                    //添加按钮到toolbar
                    ToolStripButton button = new ToolStripButton(childitem.Text, Image.FromFile(iconpath), handler2);
                    button.DisplayStyle = ToolStripItemDisplayStyle.Image;
                    button.ToolTipText = childitem.Text;
                    button.Tag = mc;
                    button.Visible = true;
                    _toolbar.Items.Add(button);
                }

                iconpath = "";
                mc = null;

                if(child1.ChildNodes.Count > 0)
                {
                    GetChildMenu(ip,childitem, child1);
                }
            }
        }

        /**//// <summary>
        /// 打开一个窗体
        /// </summary>
        /// <param name="asmname">窗体类程序集和窗体类的组合,从节点的AssemblyName属性获取</param>
        private  void OpenForm(MenuClass mc)
        {
            string asmname = mc.Assemblyname;
            string formtag = mc.FormTag;

            if (formtag == "")
            {
                throw new Exception(Resources.StringNoFormFlag);
            }

            if(formtag.ToUpper() == "TRUE")
            {
                if(asmname == string.Empty)
                {
                    throw new NullReferenceException(Resources.StringAssemblyNull);
                }


                //string[] a = asmname.Split(',');
                object obj = null;
                Type tp = Type.GetType(asmname);
                if(tp != null)
                {
                    obj = Activator.CreateInstance(tp);
                }
                else
                {
                    throw new Exception("加载程序的时候出错,请检查程序(dll,exe)是否存在或者类型是否正确。");
                }


                //检查是否是Form类
                if((obj == null) | !(obj is Form))
                {
                    throw new Exception(Resources.StringNotForm);
                }

                Form frm = (obj as Form);

                //检查打开的第一个窗口是否是MDIFORM
                if(Application.OpenForms[0].IsMdiContainer)
                {
                    //作为MDICHILDFORM
                    frm.MdiParent = Application.OpenForms[0];
                }
                //加载窗体
                frm.Show();
            }
        }

        /**//// <summary>
        /// 菜单单击事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="args"></param>
        private void OnPluginClick(object sender, EventArgs args)
        {
            OfficeMenuItem item = (OfficeMenuItem)sender;
            MenuClass mc = (MenuClass) item.Tag;
            if ((item.Text == "退出") | (item.Text == "EXIT"))
            {
                OnExitClick(sender, args);
                return;
            }
            OpenForm(mc);
        }

    }

这里面用到了delegate,最重要的函数是加载菜单的函数和OnPluginClick函数。

使用这个框架可以动态增加任意的层次的模块。

微软的CAB 使用Resigster site方式来增加模块,感觉不是很方便。

如果您对这个框架感兴趣可以邮件 piyanrong@gmail.com。

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