BindableTemplateBuilder.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / UI / BindableTemplateBuilder.cs / 1305376 / BindableTemplateBuilder.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

/* 
 * Classes related to templated control support 
 *
 * Copyright (c) 1999 Microsoft Corporation 
 */

namespace System.Web.UI {
 
    using System;
    using System.Collections; 
    using System.Collections.Specialized; 
    using System.ComponentModel;
    using System.ComponentModel.Design; 
    using System.Globalization;
    using System.Reflection;
    using System.Security.Permissions;
    using System.Web.Util; 

    ///  
    ///    [To be supplied.] 
    /// 
    public sealed class BindableTemplateBuilder : TemplateBuilder, IBindableTemplate { 
        private ExtractTemplateValuesMethod _extractTemplateValuesMethod;

        /*
         * No-compile delegate handler for ExtractValues. 
         */
        private IOrderedDictionary ExtractTemplateValuesMethod(Control container) { 
            /*System.Web.UI.OrderedDictionary @__table; 
            System.Web.UI.WebControls.DropDownList ddl2;
            @__table = new System.Web.UI.OrderedDictionary(); 
            ddl2 = ((System.Web.UI.WebControls.DropDownList)(@__container.FindControl("ddl2")));
            if ((ddl2 != null)) {
                @__table["FavVegetable"] = ddl2.SelectedValue;
            } 
            return @__table;*/
 
            BindableTemplateBuilder bindableTemplateBuilder = this as BindableTemplateBuilder; 

            Debug.Assert(bindableTemplateBuilder != null, "ExtractTemplateValuesMethod called on non-BindableTemplateBuilder."); 
            OrderedDictionary table = new OrderedDictionary();
            if (bindableTemplateBuilder != null) {
                ExtractTemplateValuesRecursive(bindableTemplateBuilder.SubBuilders, table, container);
            } 

            return table; 
        } 

        private void ExtractTemplateValuesRecursive(ArrayList subBuilders, OrderedDictionary table, Control container) { 
            foreach (object subBuilderObject in subBuilders) {
                ControlBuilder subBuilderControlBuilder = subBuilderObject as ControlBuilder;
                if (subBuilderControlBuilder != null) {
                    ICollection entries; 
                    // filter out device filtered bound entries that don't apply to this device
                    if (!subBuilderControlBuilder.HasFilteredBoundEntries) { 
                        entries = subBuilderControlBuilder.BoundPropertyEntries; 
                    }
                    else { 
                        Debug.Assert(subBuilderControlBuilder.ServiceProvider == null);
                        Debug.Assert(subBuilderControlBuilder.TemplateControl != null, "TemplateControl should not be null in no-compile pages. We need it for the FilterResolutionService.");

                        ServiceContainer serviceContainer = new ServiceContainer(); 
                        serviceContainer.AddService(typeof(IFilterResolutionService), subBuilderControlBuilder.TemplateControl);
 
                        try { 
                            subBuilderControlBuilder.SetServiceProvider(serviceContainer);
                            entries = subBuilderControlBuilder.GetFilteredPropertyEntrySet(subBuilderControlBuilder.BoundPropertyEntries); 
                        }
                        finally {
                            subBuilderControlBuilder.SetServiceProvider(null);
                        } 
                    }
 
                    string previousControlName = null; 
                    bool newControl = true;
                    Control control = null; 

                    foreach (BoundPropertyEntry entry in entries) {
                        // Skip all entries that are not two-way
                        if (!entry.TwoWayBound) 
                            continue;
 
                        // Reset the "previous" Property Entry if we're not looking at the same control. 
                        // If we don't do this, Two controls that have conditionals on the same named property will have
                        // their conditionals incorrectly merged. 
                        if (String.Compare(previousControlName, entry.ControlID, StringComparison.Ordinal) != 0) {
                            newControl = true;
                        }
                        else { 
                            newControl = false;
                        } 
 
                        previousControlName = entry.ControlID;
 
                        if (newControl) {
                            control = container.FindControl(entry.ControlID);

                            if (control == null || !entry.ControlType.IsInstanceOfType(control)) { 
                                Debug.Assert(false, "BoundPropertyEntry is of wrong control type or couldn't be found.  Expected " + entry.ControlType.Name);
                                continue; 
                            } 
                        }
 
                        string propertyName;
                        // map the property in case it's a complex property
                        object targetObject = PropertyMapper.LocatePropertyObject(control, entry.Name, out propertyName, InDesigner);
 
                        // FastPropertyAccessor uses ReflectEmit for lightning speed
                        table[entry.FieldName] = FastPropertyAccessor.GetProperty(targetObject, propertyName, InDesigner); 
                    } 

                    ExtractTemplateValuesRecursive(subBuilderControlBuilder.SubBuilders, table, container); 
                }
            }
        }
 
        /*
         * IBindableTemplate implementation 
         * This implementation of ITemplate is used in the designer and no-compile. 
         */
        public IOrderedDictionary ExtractValues(Control container) { 
            if (_extractTemplateValuesMethod != null && !InDesigner) {
                return _extractTemplateValuesMethod(container);
            }
            return new OrderedDictionary(); 
        }
 
        public override void OnAppendToParentBuilder(ControlBuilder parentBuilder) { 
            base.OnAppendToParentBuilder(parentBuilder);
            if (HasTwoWayBoundProperties) { 
                _extractTemplateValuesMethod = new ExtractTemplateValuesMethod(ExtractTemplateValuesMethod);
            }
        }
    } 

 
    // Delegates used for the compiled template and no-compile Bind 

    ///  
    /// 
    /// [To be supplied.]
    /// 
    public delegate IOrderedDictionary ExtractTemplateValuesMethod(Control control); 

    /* 
     * This class is the ITemplate implementation that is called from the 
     * generated page class code.  It just passes the Initialize call on to a
     * delegate. 
     */

    /// 
    ///  
    /// [To be supplied.]
    ///  
    public sealed class CompiledBindableTemplateBuilder : IBindableTemplate { 
        private BuildTemplateMethod _buildTemplateMethod;
        private ExtractTemplateValuesMethod _extractTemplateValuesMethod; 


        /// 
        /// [To be supplied.] 
        /// 
        public CompiledBindableTemplateBuilder(BuildTemplateMethod buildTemplateMethod, ExtractTemplateValuesMethod extractTemplateValuesMethod) { 
            _buildTemplateMethod = buildTemplateMethod; 
            _extractTemplateValuesMethod = extractTemplateValuesMethod;
        } 

        // IBindableTemplate::ExtractValues

        ///  
        /// Calls the ExtractTemplateValuesMethod delegate, which will return a dictionary of values.
        ///  
        public IOrderedDictionary ExtractValues(Control container) { 
            if (_extractTemplateValuesMethod != null) {
                return _extractTemplateValuesMethod(container); 
            }
            return new OrderedDictionary();
        }
 
        // ITemplate::InstantiateIn
 
        ///  
        /// [To be supplied.]
        ///  
        public void InstantiateIn(Control container) {
            _buildTemplateMethod(container);
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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BindableTemplateBuilder.cs source code in C# .NET

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