www.pudn.com > wxwinter2.rar > wxdWFStateMachineDesigner.cs

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Drawing; 
using System.Data; 
using System.Text; 
using System.Windows.Forms; 
using System.ComponentModel.Design; 
using System.ComponentModel.Design.Serialization; 
using System.Workflow.ComponentModel; 
using System.Workflow.ComponentModel.Compiler; 
using System.Workflow.Activities; 
using System.Workflow.ComponentModel.Design; 
using System.Runtime.InteropServices; 
using System.Collections; 
using System.Collections.ObjectModel; 
using System.IO; 
using System.Workflow.ComponentModel.Serialization; 
using System.Xml; 
using System.CodeDom.Compiler; 
using System.Workflow.Runtime; 
using System.Reflection; 
using System.Threading; 
 
namespace wxwinter.wf.Design 
{ 
 
 
    public class wxdWFStateMachineDesigner : UserControl, IDisposable, IServiceProvider 
    { 
 
 
 
 
        private System.ComponentModel.IContainer components = null; 
 
        private System.Windows.Forms.Panel panel1; 
        private System.Windows.Forms.Panel panel2; 
        private System.Windows.Forms.Panel panel3; 
        private System.Windows.Forms.PropertyGrid propertyGrid; 
        private System.Windows.Forms.Panel panel4; 
        private System.Windows.Forms.Splitter splitter2; 
        private System.Windows.Forms.Panel panel5; 
        private System.Windows.Forms.Splitter splitter1; 
 
 
        private void InitializeComponent() 
        { 
            this.panel1 = new System.Windows.Forms.Panel(); 
            this.panel2 = new System.Windows.Forms.Panel(); 
            this.panel3 = new System.Windows.Forms.Panel(); 
            this.propertyGrid = new System.Windows.Forms.PropertyGrid(); 
            this.panel4 = new System.Windows.Forms.Panel(); 
            this.splitter2 = new System.Windows.Forms.Splitter(); 
            this.panel5 = new System.Windows.Forms.Panel(); 
            this.splitter1 = new System.Windows.Forms.Splitter(); 
            this.panel3.SuspendLayout(); 
            this.panel4.SuspendLayout(); 
            this.panel5.SuspendLayout(); 
            this.SuspendLayout(); 
            //  
            // panel1 
            //  
            this.panel1.AutoScroll = true; 
            this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; 
            this.panel1.Dock = System.Windows.Forms.DockStyle.Top; 
            this.panel1.Location = new System.Drawing.Point(0, 0); 
            this.panel1.Name = "panel1"; 
            this.panel1.Size = new System.Drawing.Size(266, 262); 
            this.panel1.TabIndex = 3; 
            //  
            // panel2 
            //  
            this.panel2.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; 
            this.panel2.Dock = System.Windows.Forms.DockStyle.Fill; 
            this.panel2.Location = new System.Drawing.Point(0, 0); 
            this.panel2.Name = "panel2"; 
            this.panel2.Size = new System.Drawing.Size(422, 543); 
            this.panel2.TabIndex = 4; 
            //  
            // panel3 
            //  
            this.panel3.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; 
            this.panel3.Controls.Add(this.propertyGrid); 
            this.panel3.Dock = System.Windows.Forms.DockStyle.Fill; 
            this.panel3.Location = new System.Drawing.Point(0, 262); 
            this.panel3.Name = "panel3"; 
            this.panel3.Size = new System.Drawing.Size(266, 281); 
            this.panel3.TabIndex = 6; 
            //  
            // propertyGrid 
            //  
            this.propertyGrid.Dock = System.Windows.Forms.DockStyle.Fill; 
            this.propertyGrid.Location = new System.Drawing.Point(0, 0); 
            this.propertyGrid.Name = "propertyGrid"; 
            this.propertyGrid.Size = new System.Drawing.Size(262, 277); 
            this.propertyGrid.TabIndex = 0; 
            //  
            // panel4 
            //  
            this.panel4.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; 
            this.panel4.Controls.Add(this.splitter1); 
            this.panel4.Controls.Add(this.panel3); 
            this.panel4.Controls.Add(this.panel1); 
            this.panel4.Dock = System.Windows.Forms.DockStyle.Left; 
            this.panel4.Location = new System.Drawing.Point(0, 0); 
            this.panel4.Name = "panel4"; 
            this.panel4.Size = new System.Drawing.Size(270, 547); 
            this.panel4.TabIndex = 7; 
            //  
            // splitter2 
            //  
            this.splitter2.Location = new System.Drawing.Point(270, 0); 
            this.splitter2.Name = "splitter2"; 
            this.splitter2.Size = new System.Drawing.Size(3, 547); 
            this.splitter2.TabIndex = 8; 
            this.splitter2.TabStop = false; 
            //  
            // panel5 
            //  
            this.panel5.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; 
            this.panel5.Controls.Add(this.panel2); 
            this.panel5.Dock = System.Windows.Forms.DockStyle.Fill; 
            this.panel5.Location = new System.Drawing.Point(273, 0); 
            this.panel5.Name = "panel5"; 
            this.panel5.Size = new System.Drawing.Size(426, 547); 
            this.panel5.TabIndex = 9; 
            //  
            // splitter1 
            //  
            this.splitter1.Dock = System.Windows.Forms.DockStyle.Top; 
            this.splitter1.Location = new System.Drawing.Point(0, 262); 
            this.splitter1.Name = "splitter1"; 
            this.splitter1.Size = new System.Drawing.Size(266, 3); 
            this.splitter1.TabIndex = 7; 
            this.splitter1.TabStop = false; 
            //  
            // WorkflowDesignerControl 
            //  
            this.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle; 
            this.Controls.Add(this.panel5); 
            this.Controls.Add(this.splitter2); 
            this.Controls.Add(this.panel4); 
            this.Name = "wxwinterWFD"; 
            this.Size = new System.Drawing.Size(699, 547); 
            this.panel3.ResumeLayout(false); 
            this.panel4.ResumeLayout(false); 
            this.panel5.ResumeLayout(false); 
            this.ResumeLayout(false); 
 
        } 
 
 
        string activityToolItemFile = ""; 
 
       
 
        private WorkflowView workflowView;  //工作查看器 
        private DesignSurface designSurface; 
        private wxdWFLoader loader; 
        
 
 
        
        System.Workflow.Activities.StateMachineWorkflowActivity workflow; 
 
   
        public wxdWFStateMachineDesigner() 
        { 
            this.activityToolItemFile = System.AppDomain.CurrentDomain.BaseDirectory + "ActivityTooIteml.txt"; 
            InitializeComponent(); 
 
            wxdActivityTool toolbox = new wxdActivityTool(this, activityToolItemFile); 
            panel1.Controls.Add(toolbox); 
            toolbox.Dock = DockStyle.Fill; 
            toolbox.BackColor = BackColor; 
            toolbox.Font = WorkflowTheme.CurrentTheme.AmbientTheme.Font; 
 
            WorkflowTheme.CurrentTheme.ReadOnly = false; 
            WorkflowTheme.CurrentTheme.AmbientTheme.ShowConfigErrors = false; 
            WorkflowTheme.CurrentTheme.ReadOnly = true; 
 
            this.propertyGrid.BackColor = BackColor; 
            this.propertyGrid.Font = WorkflowTheme.CurrentTheme.AmbientTheme.Font; 
 
        } 
 
 
 
 
 
   
 
 
 
 
 
 
        /// 
 
        /// Xoml文件名 
        /// 
 
        public string XomlFile 
        { 
            get 
            { 
                return this.loader.XomlFile; 
            } 
            set 
            { 
                this.loader.XomlFile = value; 
            } 
        } 
 
 
        /// 
 
        /// Xoml文件名字串 
        /// 
 
        public string Xoml 
        { 
            get 
            { 
                string xoml = string.Empty; 
                if (this.loader != null) 
                { 
                    try 
                    { 
                        this.loader.Flush(); 
                        xoml = this.loader.Xoml; 
                    } 
                    catch 
                    { 
                    } 
                } 
                return xoml; 
            } 
 
            set 
            { 
                try 
                { 
                    if (!String.IsNullOrEmpty(value)) 
                        LoadWorkflow(value); 
                } 
                catch 
                { 
                } 
            } 
        } 
 
 
        /// 
 
        /// 工作流的名称 
        /// 
 
        public string WorkflowName 
        { 
            get 
            { 
                return this.workflow == null ? string.Empty : this.workflow.Name; 
            } 
        } 
 
 
        /// 
 
        /// 改变显示比例 
        /// 
 
        ///  
        public void ProcessZoom(int zoomFactor) 
        { 
            this.workflowView.Zoom = zoomFactor; 
            this.workflowView.Update(); 
        } 
 
 
        /// 
 
        /// 删除选中结点 
        /// 
 
        public void DeleteSelected() 
        { 
            ISelectionService selectionService = (ISelectionService)this.GetService(typeof(ISelectionService)); 
 
            if (selectionService != null) 
            { 
                if (selectionService.PrimarySelection is Activity) 
                { 
                    Activity activity = (Activity)selectionService.PrimarySelection; 
 
                    if (activity.Name != this.WorkflowName) 
                    { 
                        activity.Parent.Activities.Remove(activity); 
                        this.workflowView.Update(); 
                    } 
                } 
            } 
        } 
 
 
        /// 
 
        /// 从xoml文件中加载工作流 
        /// 
 
        public void LoadExistingWorkflow() 
        { 
            OpenFileDialog openFileDialog = new OpenFileDialog(); 
            openFileDialog.Filter = "xoml files (*.xoml)|*.xoml|All files (*.*)|*.*"; 
            openFileDialog.FilterIndex = 1; 
            openFileDialog.RestoreDirectory = true; 
 
            if (openFileDialog.ShowDialog() == DialogResult.OK) 
            { 
                using (XmlReader xmlReader = XmlReader.Create(openFileDialog.FileName)) 
                { 
                    WorkflowMarkupSerializer serializer = new WorkflowMarkupSerializer(); 
                   
                   this.workflow = (System.Workflow.Activities.StateMachineWorkflowActivity)serializer.Deserialize(xmlReader); 
 
                    this.LoadWorkflow(); 
 
                    this.XomlFile = openFileDialog.FileName; 
                    this.Text = "打开文件 [" + openFileDialog.FileName + "]"; 
                } 
            } 
        } 
 
 
        /// 
 
        /// 保存工作流 
        /// 
 
        ///  
        public bool Save() 
        { 
            return this.Save(true); 
        } 
 
 
 
 
        protected override void Dispose(bool disposing) 
        { 
            if (disposing && (components != null)) 
            { 
                UnloadWorkflow(); 
                components.Dispose(); 
            } 
            base.Dispose(disposing); 
        } 
 
        new public object GetService(Type serviceType) 
        { 
            return (this.workflowView != null) ? ((IServiceProvider)this.workflowView).GetService(serviceType) : null; 
        } 
 
        protected override void OnLoad(EventArgs e) 
        { 
            base.OnLoad(e); 
            ShowDefaultWorkflow(); 
        } 
 
 
        private void LoadWorkflow(string xoml) 
        { 
            SuspendLayout(); 
 
            DesignSurface designSurface = new DesignSurface(); 
            wxdWFLoader loader = new wxdWFLoader(activityToolItemFile); 
            loader.Xoml = xoml; 
            designSurface.BeginLoad(loader); 
            IDesignerHost designerHost; 
            designerHost = designSurface.GetService(typeof(IDesignerHost)) as IDesignerHost; 
            if (designerHost != null && designerHost.RootComponent != null) 
            { 
                IRootDesigner rootDesigner = designerHost.GetDesigner(designerHost.RootComponent) as IRootDesigner; 
                if (rootDesigner != null) 
                { 
                    UnloadWorkflow(); 
 
                    this.designSurface = designSurface; 
                    this.loader = loader; 
                    this.workflowView = rootDesigner.GetView(ViewTechnology.Default) as WorkflowView; 
                    panel2.Controls.Add(this.workflowView); 
                    this.workflowView.Dock = DockStyle.Fill; 
                    this.workflowView.TabIndex = 1; 
                    this.workflowView.TabStop = true; 
                    this.workflowView.HScrollBar.TabStop = false; 
                    this.workflowView.VScrollBar.TabStop = false; 
                    this.workflowView.Focus(); 
 
                    ISelectionService selectionService = GetService(typeof(ISelectionService)) as ISelectionService; 
 
                    if (selectionService != null) 
                    { 
                        selectionService.SelectionChanged += new EventHandler(OnSelectionChanged); 
                    } 
                } 
            } 
 
            ResumeLayout(true); 
        } 
 
        private void UnloadWorkflow() 
        { 
            IDesignerHost designerHost; 
            designerHost = GetService(typeof(IDesignerHost)) as IDesignerHost; 
            if (designerHost != null && designerHost.Container.Components.Count > 0) 
                wxdWFLoader.DestroyObjectGraphFromDesignerHost(designerHost, designerHost.RootComponent as Activity); 
 
            if (this.designSurface != null) 
            { 
                this.designSurface.Dispose(); 
                this.designSurface = null; 
            } 
 
            if (this.workflowView != null) 
            { 
                Controls.Remove(this.workflowView); 
                this.workflowView.Dispose(); 
                this.workflowView = null; 
            } 
        } 
 
        //显示默认的工作流 
        private void ShowDefaultWorkflow() 
        { 
            
            this.workflow = new StateMachineWorkflowActivity(); 
            workflow.Name = "wxwinter"; 
 
            this.LoadWorkflow(); 
        } 
 
 
        private void LoadWorkflow() 
        { 
            using (StringWriter stringWriter = new StringWriter()) 
            { 
                using (XmlWriter xmlWriter = XmlWriter.Create(stringWriter)) 
                { 
                    WorkflowMarkupSerializer serializer = new WorkflowMarkupSerializer(); 
                    serializer.Serialize(xmlWriter, workflow); 
                    this.Xoml = stringWriter.ToString(); 
                } 
            } 
        } 
 
 
 
        private void OnSelectionChanged(object sender, EventArgs e) 
        { 
            ISelectionService selectionService = GetService(typeof(ISelectionService)) as ISelectionService; 
 
            if (selectionService != null) 
            { 
                this.propertyGrid.SelectedObjects = new ArrayList(selectionService.GetSelectedComponents()).ToArray(); 
            } 
        } 
 
        private void SaveFile() 
        { 
            if (this.XomlFile.Length != 0) 
            { 
                this.SaveExistingWorkflow(this.XomlFile); 
            } 
            else 
            { 
                SaveFileDialog saveFileDialog = new SaveFileDialog(); 
                saveFileDialog.Filter = "xoml files (*.xoml)|*.xoml|All files (*.*)|*.*"; 
                saveFileDialog.FilterIndex = 1; 
                saveFileDialog.RestoreDirectory = true; 
 
                if (saveFileDialog.ShowDialog() == DialogResult.OK) 
                { 
                    this.SaveExistingWorkflow(saveFileDialog.FileName); 
                    this.Text = "Designer Hosting Sample -- [" + saveFileDialog.FileName + "]"; 
                } 
            } 
        } 
 
        internal void SaveExistingWorkflow(string filePath) 
        { 
            if (this.designSurface != null && this.loader != null) 
            { 
                this.XomlFile = filePath; 
                this.loader.PerformFlush(); 
            } 
        } 
 
        public bool Save(bool showMessage) 
        { 
            Cursor cursor = this.Cursor; 
            this.Cursor = Cursors.WaitCursor; 
 
            bool saveOK = true; 
 
            try 
            { 
               
                this.SaveFile(); 
 
                if (showMessage) 
                { 
                    MessageBox.Show(this, "文件已保存 \n" + Path.Combine(Path.GetDirectoryName(this.GetType().Assembly.Location), this.XomlFile), this.Text, MessageBoxButtons.OK, MessageBoxIcon.Information); 
                } 
            } 
            catch (Exception ex) 
            { 
                MessageBox.Show(ex.ToString()); 
                saveOK = false; 
            } 
            finally 
            { 
                this.Cursor = cursor; 
            } 
 
            return saveOK; 
        } 
 
    } 
 
}