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//------------------------------------------------------------------------------
// <copyright file="BindableTemplateBuilder.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
/*
* 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;
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
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
/// <internalonly/>
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
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.
*/
/// <internalonly/>
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public sealed class CompiledBindableTemplateBuilder : IBindableTemplate {
private BuildTemplateMethod _buildTemplateMethod;
private ExtractTemplateValuesMethod _extractTemplateValuesMethod;
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public CompiledBindableTemplateBuilder(BuildTemplateMethod buildTemplateMethod, ExtractTemplateValuesMethod extractTemplateValuesMethod) {
_buildTemplateMethod = buildTemplateMethod;
_extractTemplateValuesMethod = extractTemplateValuesMethod;
}
// IBindableTemplate::ExtractValues
/// <devdoc>
/// <para>Calls the ExtractTemplateValuesMethod delegate, which will return a dictionary of values.</para>
/// </devdoc>
public IOrderedDictionary ExtractValues(Control container) {
if (_extractTemplateValuesMethod != null) {
return _extractTemplateValuesMethod(container);
}
return new OrderedDictionary();
}
// ITemplate::InstantiateIn
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public void InstantiateIn(Control container) {
_buildTemplateMethod(container);
}
}
}
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