www.pudn.com > wxwinter2.rar > wxdWFSequentialView.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 wxdWFSequentialView : UserControl, IDisposable, IServiceProvider 
    { 
 
        
        private WorkflowView workflowView;  //工作查看器 
        private DesignSurface designSurface; 
        private wxdWFLoader loader; 
 
 
        SequentialWorkflowActivity workflow; 
 
 
        public wxdWFSequentialView() 
        { 
            WorkflowTheme.CurrentTheme.ReadOnly = false; 
            WorkflowTheme.CurrentTheme.AmbientTheme.ShowConfigErrors = true ; 
            WorkflowTheme.CurrentTheme.ReadOnly = true; 
        } 
 
    
        public void ProcessZoom(int zoomFactor) 
        { 
            this.workflowView.Zoom = zoomFactor; 
            this.workflowView.Update(); 
        } 
 
 
        public new object GetService(Type serviceType) 
        { 
            return (this.workflowView != null) ? ((IServiceProvider)this.workflowView).GetService(serviceType) : null; 
        } 
 
 
 
        //从XML文件加载工作流到设计器的核心 
        private void LoadWorkflow(string xoml) 
        { 
            SuspendLayout(); 
 
            DesignSurface designSurface = new DesignSurface(); 
            wxdWFLoader loader = new wxdWFLoader(""); 
            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; 
                    this.Controls.Add(this.workflowView); 
                    this.workflowView.Dock = DockStyle.Fill; 
                
                    ISelectionService selectionService = GetService(typeof(ISelectionService)) as ISelectionService; 
 
                  
                } 
            } 
 
            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 
        public  void ShowWorkflow(SequentialWorkflowActivity v) 
        { 
            this.workflow = v; 
 
            using (StringWriter stringWriter = new StringWriter()) 
            { 
                using (XmlWriter xmlWriter = XmlWriter.Create(stringWriter)) 
                { 
                    WorkflowMarkupSerializer serializer = new WorkflowMarkupSerializer(); 
                    serializer.Serialize(xmlWriter, workflow); 
                    LoadWorkflow(stringWriter.ToString()); 
                     
                } 
            } 
        } 
 
 
   
 
 
 
    } 
}