Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / fx / src / xsp / System / Web / UI / WebParts / GenericWebPart.cs / 1 / GenericWebPart.cs
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls.WebParts {
using System;
using System.Collections;
using System.ComponentModel;
using System.Globalization;
using System.Security.Permissions;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Util;
///
/// A WebPart that can wrap any other generic server control, and provide it
/// with "WebPart-ness."
/// 1. Implements several properties if not set on the WebPart by looking for an
/// attribute on the contained control.
/// 2. Implement IWebEditable to allow the PropertyGridEditorPart to tunnel-in
/// and browse the contained control.
///
[
ToolboxItem(false)
]
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class GenericWebPart : WebPart {
internal const string IDPrefix = "gwp";
private Control _childControl;
private IWebPart _childIWebPart;
private string _subtitle;
///
/// Intializes an instance of GenericWebPart with the control it is to wrap.
///
protected internal GenericWebPart(Control control) {
if (control == null) {
throw new ArgumentNullException("control");
}
if (control is WebPart) {
throw new ArgumentException(SR.GetString(SR.GenericWebPart_CannotWrapWebPart), "control");
}
if (control is BasePartialCachingControl) {
throw new ArgumentException(SR.GetString(SR.GenericWebPart_CannotWrapOutputCachedControl), "control");
}
if (String.IsNullOrEmpty(control.ID)) {
throw new ArgumentException(SR.GetString(SR.GenericWebPart_NoID, control.GetType().FullName));
}
ID = IDPrefix + control.ID;
_childControl = control;
_childIWebPart = _childControl as IWebPart;
CopyChildAttributes();
}
public override string CatalogIconImageUrl {
get {
if (_childIWebPart != null) {
return _childIWebPart.CatalogIconImageUrl;
}
else {
return base.CatalogIconImageUrl;
}
}
set {
if (_childIWebPart != null) {
_childIWebPart.CatalogIconImageUrl = value;
}
else {
base.CatalogIconImageUrl = value;
}
}
}
public Control ChildControl {
get {
Debug.Assert(_childControl != null, "ChildControl cannot be null.");
return _childControl;
}
}
public override string Description {
get {
if (_childIWebPart != null) {
return _childIWebPart.Description;
}
else {
return base.Description;
}
}
set {
if (_childIWebPart != null) {
_childIWebPart.Description = value;
}
else {
base.Description = value;
}
}
}
public override Unit Height {
get {
WebControl c = ChildControl as WebControl;
if (c != null) {
return c.Height;
}
else {
return base.Height;
}
}
set {
WebControl c = ChildControl as WebControl;
if (c != null) {
c.Height = value;
}
else {
base.Height = value;
}
}
}
// Seal the ID property so we can set it in the constructor without an FxCop violation.
public sealed override string ID {
get {
return base.ID;
}
set {
base.ID = value;
}
}
public override string Subtitle {
get {
if (_childIWebPart != null) {
return _childIWebPart.Subtitle;
}
else {
return (_subtitle != null ? _subtitle : String.Empty);
}
}
}
public override string Title {
get {
if (_childIWebPart != null) {
return _childIWebPart.Title;
}
else {
return base.Title;
}
}
set {
if (_childIWebPart != null) {
_childIWebPart.Title = value;
}
else {
base.Title = value;
}
}
}
public override string TitleIconImageUrl {
get {
if (_childIWebPart != null) {
return _childIWebPart.TitleIconImageUrl;
}
else {
return base.TitleIconImageUrl;
}
}
set {
if (_childIWebPart != null) {
_childIWebPart.TitleIconImageUrl = value;
}
else {
base.TitleIconImageUrl = value;
}
}
}
public override string TitleUrl {
get {
if (_childIWebPart != null) {
return _childIWebPart.TitleUrl;
}
else {
return base.TitleUrl;
}
}
set {
if (_childIWebPart != null) {
_childIWebPart.TitleUrl = value;
}
else {
base.TitleUrl = value;
}
}
}
public override WebPartVerbCollection Verbs {
get {
if (ChildControl != null) {
IWebActionable webActionableChildControl = ChildControl as IWebActionable;
if (webActionableChildControl != null) {
return new WebPartVerbCollection(base.Verbs, webActionableChildControl.Verbs);
}
}
return base.Verbs;
}
}
public override object WebBrowsableObject {
get {
IWebEditable webEditableChildControl = ChildControl as IWebEditable;
if (webEditableChildControl != null) {
return webEditableChildControl.WebBrowsableObject;
}
else {
return ChildControl;
}
}
}
public override Unit Width {
get {
WebControl c = ChildControl as WebControl;
if (c != null) {
return c.Width;
}
else {
return base.Width;
}
}
set {
WebControl c = ChildControl as WebControl;
if (c != null) {
c.Width = value;
}
else {
base.Width = value;
}
}
}
private void CopyChildAttributes() {
// Copy the attribute values from the ChildControl to the GenericWebPart properties.
IAttributeAccessor childAttributeAccessor = ChildControl as IAttributeAccessor;
if (childAttributeAccessor != null) {
base.AuthorizationFilter = childAttributeAccessor.GetAttribute("AuthorizationFilter");
base.CatalogIconImageUrl = childAttributeAccessor.GetAttribute("CatalogIconImageUrl");
base.Description = childAttributeAccessor.GetAttribute("Description");
string exportMode = childAttributeAccessor.GetAttribute("ExportMode");
if (exportMode != null) {
base.ExportMode = (WebPartExportMode)(Util.GetEnumAttribute(
"ExportMode", exportMode, typeof(WebPartExportMode)));
}
// Don't need to check base.Subtitle, since we always want to use the Subtitle on the
// ChildControl if it is present. Also, the property is not settable on WebPart, so we
// know that base.Subtitle will always be String.Empty.
_subtitle = childAttributeAccessor.GetAttribute("Subtitle");
base.Title = childAttributeAccessor.GetAttribute("Title");
base.TitleIconImageUrl = childAttributeAccessor.GetAttribute("TitleIconImageUrl");
base.TitleUrl = childAttributeAccessor.GetAttribute("TitleUrl");
}
// Remove all the attributes from the ChildControl, whether or not they were copied
// to the GenericWebPart property. We want to remove the attributes so they are not
// rendered on the ChildControl. (VSWhidbey 313674)
WebControl childWebControl = ChildControl as WebControl;
if (childWebControl != null) {
// If the ChildControl is a WebControl, we want to completely remove the attributes.
childWebControl.Attributes.Remove("AuthorizationFilter");
childWebControl.Attributes.Remove("CatalogIconImageUrl");
childWebControl.Attributes.Remove("Description");
childWebControl.Attributes.Remove("ExportMode");
childWebControl.Attributes.Remove("Subtitle");
childWebControl.Attributes.Remove("Title");
childWebControl.Attributes.Remove("TitleIconImageUrl");
childWebControl.Attributes.Remove("TitleUrl");
}
else if (childAttributeAccessor != null) {
// If the ChildControl is not a WebControl, we cannot remove the attributes, so we set
// them to null instead.
childAttributeAccessor.SetAttribute("AuthorizationFilter", null);
childAttributeAccessor.SetAttribute("CatalogIconImageUrl", null);
childAttributeAccessor.SetAttribute("Description", null);
childAttributeAccessor.SetAttribute("ExportMode", null);
childAttributeAccessor.SetAttribute("Subtitle", null);
childAttributeAccessor.SetAttribute("Title", null);
childAttributeAccessor.SetAttribute("TitleIconImageUrl", null);
childAttributeAccessor.SetAttribute("TitleUrl", null);
}
}
protected internal override void CreateChildControls() {
((GenericWebPartControlCollection)Controls).AddGenericControl(ChildControl);
}
protected override ControlCollection CreateControlCollection() {
return new GenericWebPartControlCollection(this);
}
public override EditorPartCollection CreateEditorParts() {
IWebEditable webEditableChildControl = ChildControl as IWebEditable;
if (webEditableChildControl != null) {
return new EditorPartCollection(base.CreateEditorParts(), webEditableChildControl.CreateEditorParts());
}
else {
return base.CreateEditorParts();
}
}
protected internal override void Render(HtmlTextWriter writer) {
// Copied from CompositeControl.Render()
if (DesignMode) {
EnsureChildControls();
}
RenderContents(writer);
}
private sealed class GenericWebPartControlCollection : ControlCollection {
public GenericWebPartControlCollection(GenericWebPart owner) : base(owner) {
SetCollectionReadOnly(SR.GenericWebPart_CannotModify);
}
///
/// Allows adding the generic control to be wrapped.
///
public void AddGenericControl(Control control) {
string originalError = SetCollectionReadOnly(null);
// Extra try-catch block to prevent elevation of privilege attack via exception filter
try {
try {
Clear();
Add(control);
}
finally {
SetCollectionReadOnly(originalError);
}
}
catch {
throw;
}
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//-----------------------------------------------------------------------------
namespace System.Web.UI.WebControls.WebParts {
using System;
using System.Collections;
using System.ComponentModel;
using System.Globalization;
using System.Security.Permissions;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Util;
///
/// A WebPart that can wrap any other generic server control, and provide it
/// with "WebPart-ness."
/// 1. Implements several properties if not set on the WebPart by looking for an
/// attribute on the contained control.
/// 2. Implement IWebEditable to allow the PropertyGridEditorPart to tunnel-in
/// and browse the contained control.
///
[
ToolboxItem(false)
]
[AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermission(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)]
public class GenericWebPart : WebPart {
internal const string IDPrefix = "gwp";
private Control _childControl;
private IWebPart _childIWebPart;
private string _subtitle;
///
/// Intializes an instance of GenericWebPart with the control it is to wrap.
///
protected internal GenericWebPart(Control control) {
if (control == null) {
throw new ArgumentNullException("control");
}
if (control is WebPart) {
throw new ArgumentException(SR.GetString(SR.GenericWebPart_CannotWrapWebPart), "control");
}
if (control is BasePartialCachingControl) {
throw new ArgumentException(SR.GetString(SR.GenericWebPart_CannotWrapOutputCachedControl), "control");
}
if (String.IsNullOrEmpty(control.ID)) {
throw new ArgumentException(SR.GetString(SR.GenericWebPart_NoID, control.GetType().FullName));
}
ID = IDPrefix + control.ID;
_childControl = control;
_childIWebPart = _childControl as IWebPart;
CopyChildAttributes();
}
public override string CatalogIconImageUrl {
get {
if (_childIWebPart != null) {
return _childIWebPart.CatalogIconImageUrl;
}
else {
return base.CatalogIconImageUrl;
}
}
set {
if (_childIWebPart != null) {
_childIWebPart.CatalogIconImageUrl = value;
}
else {
base.CatalogIconImageUrl = value;
}
}
}
public Control ChildControl {
get {
Debug.Assert(_childControl != null, "ChildControl cannot be null.");
return _childControl;
}
}
public override string Description {
get {
if (_childIWebPart != null) {
return _childIWebPart.Description;
}
else {
return base.Description;
}
}
set {
if (_childIWebPart != null) {
_childIWebPart.Description = value;
}
else {
base.Description = value;
}
}
}
public override Unit Height {
get {
WebControl c = ChildControl as WebControl;
if (c != null) {
return c.Height;
}
else {
return base.Height;
}
}
set {
WebControl c = ChildControl as WebControl;
if (c != null) {
c.Height = value;
}
else {
base.Height = value;
}
}
}
// Seal the ID property so we can set it in the constructor without an FxCop violation.
public sealed override string ID {
get {
return base.ID;
}
set {
base.ID = value;
}
}
public override string Subtitle {
get {
if (_childIWebPart != null) {
return _childIWebPart.Subtitle;
}
else {
return (_subtitle != null ? _subtitle : String.Empty);
}
}
}
public override string Title {
get {
if (_childIWebPart != null) {
return _childIWebPart.Title;
}
else {
return base.Title;
}
}
set {
if (_childIWebPart != null) {
_childIWebPart.Title = value;
}
else {
base.Title = value;
}
}
}
public override string TitleIconImageUrl {
get {
if (_childIWebPart != null) {
return _childIWebPart.TitleIconImageUrl;
}
else {
return base.TitleIconImageUrl;
}
}
set {
if (_childIWebPart != null) {
_childIWebPart.TitleIconImageUrl = value;
}
else {
base.TitleIconImageUrl = value;
}
}
}
public override string TitleUrl {
get {
if (_childIWebPart != null) {
return _childIWebPart.TitleUrl;
}
else {
return base.TitleUrl;
}
}
set {
if (_childIWebPart != null) {
_childIWebPart.TitleUrl = value;
}
else {
base.TitleUrl = value;
}
}
}
public override WebPartVerbCollection Verbs {
get {
if (ChildControl != null) {
IWebActionable webActionableChildControl = ChildControl as IWebActionable;
if (webActionableChildControl != null) {
return new WebPartVerbCollection(base.Verbs, webActionableChildControl.Verbs);
}
}
return base.Verbs;
}
}
public override object WebBrowsableObject {
get {
IWebEditable webEditableChildControl = ChildControl as IWebEditable;
if (webEditableChildControl != null) {
return webEditableChildControl.WebBrowsableObject;
}
else {
return ChildControl;
}
}
}
public override Unit Width {
get {
WebControl c = ChildControl as WebControl;
if (c != null) {
return c.Width;
}
else {
return base.Width;
}
}
set {
WebControl c = ChildControl as WebControl;
if (c != null) {
c.Width = value;
}
else {
base.Width = value;
}
}
}
private void CopyChildAttributes() {
// Copy the attribute values from the ChildControl to the GenericWebPart properties.
IAttributeAccessor childAttributeAccessor = ChildControl as IAttributeAccessor;
if (childAttributeAccessor != null) {
base.AuthorizationFilter = childAttributeAccessor.GetAttribute("AuthorizationFilter");
base.CatalogIconImageUrl = childAttributeAccessor.GetAttribute("CatalogIconImageUrl");
base.Description = childAttributeAccessor.GetAttribute("Description");
string exportMode = childAttributeAccessor.GetAttribute("ExportMode");
if (exportMode != null) {
base.ExportMode = (WebPartExportMode)(Util.GetEnumAttribute(
"ExportMode", exportMode, typeof(WebPartExportMode)));
}
// Don't need to check base.Subtitle, since we always want to use the Subtitle on the
// ChildControl if it is present. Also, the property is not settable on WebPart, so we
// know that base.Subtitle will always be String.Empty.
_subtitle = childAttributeAccessor.GetAttribute("Subtitle");
base.Title = childAttributeAccessor.GetAttribute("Title");
base.TitleIconImageUrl = childAttributeAccessor.GetAttribute("TitleIconImageUrl");
base.TitleUrl = childAttributeAccessor.GetAttribute("TitleUrl");
}
// Remove all the attributes from the ChildControl, whether or not they were copied
// to the GenericWebPart property. We want to remove the attributes so they are not
// rendered on the ChildControl. (VSWhidbey 313674)
WebControl childWebControl = ChildControl as WebControl;
if (childWebControl != null) {
// If the ChildControl is a WebControl, we want to completely remove the attributes.
childWebControl.Attributes.Remove("AuthorizationFilter");
childWebControl.Attributes.Remove("CatalogIconImageUrl");
childWebControl.Attributes.Remove("Description");
childWebControl.Attributes.Remove("ExportMode");
childWebControl.Attributes.Remove("Subtitle");
childWebControl.Attributes.Remove("Title");
childWebControl.Attributes.Remove("TitleIconImageUrl");
childWebControl.Attributes.Remove("TitleUrl");
}
else if (childAttributeAccessor != null) {
// If the ChildControl is not a WebControl, we cannot remove the attributes, so we set
// them to null instead.
childAttributeAccessor.SetAttribute("AuthorizationFilter", null);
childAttributeAccessor.SetAttribute("CatalogIconImageUrl", null);
childAttributeAccessor.SetAttribute("Description", null);
childAttributeAccessor.SetAttribute("ExportMode", null);
childAttributeAccessor.SetAttribute("Subtitle", null);
childAttributeAccessor.SetAttribute("Title", null);
childAttributeAccessor.SetAttribute("TitleIconImageUrl", null);
childAttributeAccessor.SetAttribute("TitleUrl", null);
}
}
protected internal override void CreateChildControls() {
((GenericWebPartControlCollection)Controls).AddGenericControl(ChildControl);
}
protected override ControlCollection CreateControlCollection() {
return new GenericWebPartControlCollection(this);
}
public override EditorPartCollection CreateEditorParts() {
IWebEditable webEditableChildControl = ChildControl as IWebEditable;
if (webEditableChildControl != null) {
return new EditorPartCollection(base.CreateEditorParts(), webEditableChildControl.CreateEditorParts());
}
else {
return base.CreateEditorParts();
}
}
protected internal override void Render(HtmlTextWriter writer) {
// Copied from CompositeControl.Render()
if (DesignMode) {
EnsureChildControls();
}
RenderContents(writer);
}
private sealed class GenericWebPartControlCollection : ControlCollection {
public GenericWebPartControlCollection(GenericWebPart owner) : base(owner) {
SetCollectionReadOnly(SR.GenericWebPart_CannotModify);
}
///
/// Allows adding the generic control to be wrapped.
///
public void AddGenericControl(Control control) {
string originalError = SetCollectionReadOnly(null);
// Extra try-catch block to prevent elevation of privilege attack via exception filter
try {
try {
Clear();
Add(control);
}
finally {
SetCollectionReadOnly(originalError);
}
}
catch {
throw;
}
}
}
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- SqlRetyper.cs
- PropVariant.cs
- ServiceDescriptionReflector.cs
- XAMLParseException.cs
- ServicePoint.cs
- DataBoundControl.cs
- FilteredAttributeCollection.cs
- XmlSiteMapProvider.cs
- AttributeUsageAttribute.cs
- querybuilder.cs
- CopyNamespacesAction.cs
- ProviderUtil.cs
- ErrorWrapper.cs
- DesignerEventService.cs
- Win32SafeHandles.cs
- RecognitionResult.cs
- ProviderManager.cs
- ButtonColumn.cs
- ThumbAutomationPeer.cs
- EntityDataSourceViewSchema.cs
- XmlSerializerAssemblyAttribute.cs
- IdentityManager.cs
- Control.cs
- UnsafeNetInfoNativeMethods.cs
- ObjectIDGenerator.cs
- UnmanagedMemoryAccessor.cs
- CounterSampleCalculator.cs
- ListViewItem.cs
- IdentityHolder.cs
- IndexerNameAttribute.cs
- TemplateControl.cs
- DataRecordInternal.cs
- MouseButtonEventArgs.cs
- NameSpaceExtractor.cs
- GroupItem.cs
- EntityTypeBase.cs
- SmtpReplyReader.cs
- HttpValueCollection.cs
- NodeFunctions.cs
- util.cs
- connectionpool.cs
- MetaDataInfo.cs
- Gdiplus.cs
- List.cs
- SecureUICommand.cs
- Attributes.cs
- XmlNavigatorStack.cs
- COM2PictureConverter.cs
- DataGridState.cs
- DataObjectAttribute.cs
- MetadataWorkspace.cs
- TraceXPathNavigator.cs
- DataKey.cs
- MessagePropertyVariants.cs
- DelegatingTypeDescriptionProvider.cs
- CompositeDispatchFormatter.cs
- SqlWebEventProvider.cs
- HGlobalSafeHandle.cs
- ThemeDictionaryExtension.cs
- Int64.cs
- DataGridColumnDropSeparator.cs
- CodeCastExpression.cs
- SerializationFieldInfo.cs
- FileDialog.cs
- ImageInfo.cs
- SourceSwitch.cs
- BridgeDataRecord.cs
- StringUtil.cs
- XamlToRtfWriter.cs
- DNS.cs
- ModulesEntry.cs
- Process.cs
- NativeObjectSecurity.cs
- SqlNotificationEventArgs.cs
- UTF32Encoding.cs
- PolicyValidationException.cs
- SiteMapHierarchicalDataSourceView.cs
- UiaCoreApi.cs
- GridItemCollection.cs
- ExtractedStateEntry.cs
- RunWorkerCompletedEventArgs.cs
- PermissionRequestEvidence.cs
- Repeater.cs
- XmlLoader.cs
- XhtmlTextWriter.cs
- SafeCertificateContext.cs
- BitmapEffectInput.cs
- XmlSchemaValidationException.cs
- Matrix3DStack.cs
- ThumbAutomationPeer.cs
- WindowsRegion.cs
- DataGridViewCellStyleBuilderDialog.cs
- Tuple.cs
- ScriptManagerProxy.cs
- FilterRepeater.cs
- ResourceDescriptionAttribute.cs
- ValidatorCollection.cs
- ServiceDeploymentInfo.cs
- HtmlFormAdapter.cs
- _ReceiveMessageOverlappedAsyncResult.cs