LogicalExpressionEditor.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Activities / Rules / Design / LogicalExpressionEditor.cs / 1305376 / LogicalExpressionEditor.cs
                        
                        
                            using System; 
using System.CodeDom;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Security.Permissions; 
using System.Windows.Forms;
using System.Windows.Forms.Design; 
using System.Drawing.Design; 
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design; 
using System.Globalization;
using Microsoft.Win32;
using System.Workflow.Activities.Common;
 
namespace System.Workflow.Activities.Rules.Design
{ 
    [PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")] 
    internal sealed class LogicalExpressionEditor : UITypeEditor
    { 
        private IWindowsFormsEditorService editorService;

        public LogicalExpressionEditor()
        { 
        }
 
        public override object EditValue(ITypeDescriptorContext typeDescriptorContext, IServiceProvider serviceProvider, object o) 
        {
            if (typeDescriptorContext == null) 
                throw new ArgumentNullException("typeDescriptorContext");
            if (serviceProvider == null)
                throw new ArgumentNullException("serviceProvider");
 
            object returnVal = o;
 
            // Do not allow editing expression if the name is not set. 
            RuleConditionReference conditionDeclaration = typeDescriptorContext.Instance as RuleConditionReference;
 
            if (conditionDeclaration == null || conditionDeclaration.ConditionName == null || conditionDeclaration.ConditionName.Length <= 0)
                throw new ArgumentException(Messages.ConditionNameNotSet);

            Activity baseActivity = null; 

            IReferenceService rs = serviceProvider.GetService(typeof(IReferenceService)) as IReferenceService; 
            if (rs != null) 
                baseActivity = rs.GetComponent(typeDescriptorContext.Instance) as Activity;
 
            RuleConditionCollection conditionDefinitions = null;
            RuleDefinitions rules = ConditionHelper.Load_Rules_DT(serviceProvider, Helpers.GetRootActivity(baseActivity));
            if (rules != null)
                conditionDefinitions = rules.Conditions; 

            if (conditionDefinitions != null && !conditionDefinitions.Contains(conditionDeclaration.ConditionName)) 
            { 
                string message = string.Format(CultureInfo.CurrentCulture, Messages.ConditionNotFound, conditionDeclaration.ConditionName);
                throw new ArgumentException(message); 
            }

            this.editorService = (IWindowsFormsEditorService)serviceProvider.GetService(typeof(IWindowsFormsEditorService));
            if (editorService != null) 
            {
                CodeExpression experssion = typeDescriptorContext.PropertyDescriptor.GetValue(typeDescriptorContext.Instance) as CodeExpression; 
                try 
                {
                    using (RuleConditionDialog dlg = new RuleConditionDialog(baseActivity, experssion)) 
                    {
                        if (DialogResult.OK == editorService.ShowDialog(dlg))
                            returnVal = dlg.Expression;
                    } 
                }
                catch (NotSupportedException) 
                { 
                    DesignerHelpers.DisplayError(Messages.Error_ExpressionNotSupported, Messages.ConditionEditor, serviceProvider);
                } 
            }

            return returnVal;
        } 

        public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext typeDescriptorContext) 
        { 
            return UITypeEditorEditStyle.Modal;
        } 
    }

    [PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")]
    internal sealed class ConditionNameEditor : UITypeEditor 
    {
        private IWindowsFormsEditorService editorService; 
 
        public ConditionNameEditor()
        { 
        }

        public override object EditValue(ITypeDescriptorContext typeDescriptorContext, IServiceProvider serviceProvider, object o)
        { 
            if (typeDescriptorContext == null)
                throw new ArgumentNullException("typeDescriptorContext"); 
            if (serviceProvider == null) 
                throw new ArgumentNullException("serviceProvider");
 
            object returnVal = o;

            this.editorService = (IWindowsFormsEditorService)serviceProvider.GetService(typeof(IWindowsFormsEditorService));
            if (editorService != null) 
            {
                Activity baseActivity = null; 
 
                IReferenceService rs = serviceProvider.GetService(typeof(IReferenceService)) as IReferenceService;
                if (rs != null) 
                    baseActivity = rs.GetComponent(typeDescriptorContext.Instance) as Activity;

                string conditionName = typeDescriptorContext.PropertyDescriptor.GetValue(typeDescriptorContext.Instance) as string;
                ConditionBrowserDialog dlg = new ConditionBrowserDialog(baseActivity, conditionName); 

                if (DialogResult.OK == editorService.ShowDialog(dlg)) 
                    returnVal = dlg.SelectedName; 
            }
 
            return returnVal;
        }

        public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext typeDescriptorContext) 
        {
            return UITypeEditorEditStyle.Modal; 
        } 
    }
 
    #region class RuleSetNameEditor

    [PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")]
    internal sealed class RuleSetNameEditor : UITypeEditor 
    {
        private IWindowsFormsEditorService editorService; 
 
        public RuleSetNameEditor()
        { 
        }

        public override object EditValue(ITypeDescriptorContext typeDescriptorContext, IServiceProvider serviceProvider, object o)
        { 
            if (typeDescriptorContext == null)
                throw new ArgumentNullException("typeDescriptorContext"); 
            if (serviceProvider == null) 
                throw new ArgumentNullException("serviceProvider");
 
            object returnVal = o;

            this.editorService = (IWindowsFormsEditorService)serviceProvider.GetService(typeof(IWindowsFormsEditorService));
            if (editorService != null) 
            {
                Activity baseActivity = null; 
 
                IReferenceService rs = serviceProvider.GetService(typeof(IReferenceService)) as IReferenceService;
                if (rs != null) 
                    baseActivity = rs.GetComponent(typeDescriptorContext.Instance) as Activity;

                string ruleSetName = null;
                RuleSetReference ruleSetReference = typeDescriptorContext.PropertyDescriptor.GetValue(typeDescriptorContext.Instance) as RuleSetReference; 
                if (ruleSetReference != null)
                    ruleSetName = ruleSetReference.RuleSetName; 
 
                RuleSetBrowserDialog dlg = new RuleSetBrowserDialog(baseActivity, ruleSetName);
 
                if (DialogResult.OK == editorService.ShowDialog(dlg))
                    returnVal = typeDescriptorContext.PropertyDescriptor.Converter.ConvertFrom(typeDescriptorContext, CultureInfo.CurrentUICulture, dlg.SelectedName);
            }
 
            return returnVal;
        } 
 
        public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext typeDescriptorContext)
        { 
            return UITypeEditorEditStyle.Modal;
        }
    }
 
    #endregion
 
    #region class RuleSetDefinitionEditor 

    [PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")] 
    internal sealed class RuleSetDefinitionEditor : UITypeEditor
    {
        private IWindowsFormsEditorService editorService;
 
        public RuleSetDefinitionEditor()
        { 
        } 

        public override object EditValue(ITypeDescriptorContext typeDescriptorContext, IServiceProvider serviceProvider, object o) 
        {
            if (typeDescriptorContext == null)
                throw new ArgumentNullException("typeDescriptorContext");
            if (serviceProvider == null) 
                throw new ArgumentNullException("serviceProvider");
 
            object returnVal = o; 

            // Do not allow editing if in debug mode. 
            WorkflowDesignerLoader workflowDesignerLoader = serviceProvider.GetService(typeof(WorkflowDesignerLoader)) as WorkflowDesignerLoader;
            if (workflowDesignerLoader != null && workflowDesignerLoader.InDebugMode)
                throw new InvalidOperationException(Messages.DebugModeEditsDisallowed);
 
            // Do not allow editing expression if the name is not set.
            RuleSetReference ruleSetReference = typeDescriptorContext.Instance as RuleSetReference; 
 
            if (ruleSetReference == null || ruleSetReference.RuleSetName == null || ruleSetReference.RuleSetName.Length <= 0)
                throw new ArgumentException(Messages.RuleSetNameNotSet); 

            Activity baseActivity = null;

            IReferenceService rs = serviceProvider.GetService(typeof(IReferenceService)) as IReferenceService; 
            if (rs != null)
                baseActivity = rs.GetComponent(typeDescriptorContext.Instance) as Activity; 
 
            RuleSetCollection ruleSetCollection = null;
            RuleDefinitions rules = ConditionHelper.Load_Rules_DT(serviceProvider, Helpers.GetRootActivity(baseActivity)); 
            if (rules != null)
                ruleSetCollection = rules.RuleSets;

            if (ruleSetCollection != null && !ruleSetCollection.Contains(ruleSetReference.RuleSetName)) 
            {
                string message = string.Format(CultureInfo.CurrentCulture, Messages.RuleSetNotFound, ruleSetReference.RuleSetName); 
                throw new ArgumentException(message); 
            }
 
            this.editorService = (IWindowsFormsEditorService)serviceProvider.GetService(typeof(IWindowsFormsEditorService));
            if (editorService != null)
            {
                RuleSet ruleSet = ruleSetCollection[ruleSetReference.RuleSetName]; 
                using (RuleSetDialog dlg = new RuleSetDialog(baseActivity, ruleSet))
                { 
                    if (DialogResult.OK == editorService.ShowDialog(dlg)) 
                        returnVal = dlg.RuleSet;
                } 
            }
            return returnVal;
        }
 
        public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext typeDescriptorContext)
        { 
            return UITypeEditorEditStyle.Modal; 
        }
    } 

    #endregion
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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LogicalExpressionEditor.cs source code in C# .NET

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