Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / wpf / src / Core / CSharp / MS / Internal / AppModel / SiteOfOriginPart.cs / 1 / SiteOfOriginPart.cs
//------------------------------------------------------------------------------ // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: // SiteOfOriginPart is an implementation of the abstract PackagePart class. It contains an override for GetStreamCore. // // History: // 6/16/2005: Erichar - Initial creation. // //----------------------------------------------------------------------------- using System; using System.Net; using System.IO.Packaging; using System.Windows; using System.Windows.Navigation; using System.Windows.Resources; using System.IO; using System.Resources; using System.Globalization; using MS.Internal.PresentationCore; namespace MS.Internal.AppModel { ////// SiteOfOriginPart is an implementation of the abstract PackagePart class. It contains an override for GetStreamCore. /// internal class SiteOfOriginPart : System.IO.Packaging.PackagePart { //----------------------------------------------------- // // Public Constructors // //----------------------------------------------------- #region Public Constructors internal SiteOfOriginPart(Package container, Uri uri) : base(container, uri) { } #endregion //------------------------------------------------------ // // Protected Methods // //----------------------------------------------------- #region Protected Methods protected override Stream GetStreamCore(FileMode mode, FileAccess access) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Getting stream."); #endif return GetStreamAndSetContentType(false); } protected override string GetContentTypeCore() { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Getting content type."); #endif GetStreamAndSetContentType(true); return _contentType.ToString(); } #endregion //------------------------------------------------------ // // Private Methods // //------------------------------------------------------ #region Private Methods private Stream GetStreamAndSetContentType(bool onlyNeedContentType) { lock (_globalLock) { if (onlyNeedContentType && _contentType != MS.Internal.ContentType.Empty) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Getting content type and using previously determined value"); #endif return null; } // If GetContentTypeCore is called before GetStream() // then we need to retrieve the stream to get the mime type. // That stream is then stored as _cacheStream and returned // the next time GetStreamCore() is called. if (_cacheStream != null) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + "SiteOfOriginPart: Using Cached stream"); #endif Stream temp = _cacheStream; _cacheStream = null; return temp; } if (_absoluteLocation == null) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Determining absolute uri for this resource"); #endif string original = Uri.ToString(); Invariant.Assert(original[0] == '/'); string uriMinusInitialSlash = original.Substring(1); // trim leading '/' _absoluteLocation = new Uri(SiteOfOriginContainer.SiteOfOrigin, uriMinusInitialSlash); } #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Making web request to " + _absoluteLocation); #endif // For performance reasons it is better to open local files directly // rather than make a FileWebRequest. Stream responseStream; if (SecurityHelper.AreStringTypesEqual(_absoluteLocation.Scheme, Uri.UriSchemeFile)) { responseStream = HandleFileSource(onlyNeedContentType); } else { responseStream = HandleWebSource(onlyNeedContentType); } return responseStream; } } private Stream HandleFileSource(bool onlyNeedContentType) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": Opening local file " + _absoluteLocation); #endif if (_contentType == MS.Internal.ContentType.Empty) { _contentType = MS.Internal.MimeTypeMapper.GetMimeTypeFromUri(Uri); } if (!onlyNeedContentType) { return File.OpenRead(_absoluteLocation.LocalPath); } return null; } private Stream HandleWebSource(bool onlyNeedContentType) { WebResponse response = WpfWebRequestHelper.CreateRequestAndGetResponse(_absoluteLocation); Stream responseStream = response.GetResponseStream(); #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": Successfully retrieved stream from " + _absoluteLocation); #endif if (_contentType == MS.Internal.ContentType.Empty) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Setting _contentType"); #endif _contentType = WpfWebRequestHelper.GetContentType(response); } if (onlyNeedContentType) { _cacheStream = responseStream; } return responseStream; } #endregion //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Members Uri _absoluteLocation = null; ContentType _contentType = MS.Internal.ContentType.Empty; Stream _cacheStream = null; private Object _globalLock = new Object(); #endregion Private Members } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved. //------------------------------------------------------------------------------ // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: // SiteOfOriginPart is an implementation of the abstract PackagePart class. It contains an override for GetStreamCore. // // History: // 6/16/2005: Erichar - Initial creation. // //----------------------------------------------------------------------------- using System; using System.Net; using System.IO.Packaging; using System.Windows; using System.Windows.Navigation; using System.Windows.Resources; using System.IO; using System.Resources; using System.Globalization; using MS.Internal.PresentationCore; namespace MS.Internal.AppModel { ////// SiteOfOriginPart is an implementation of the abstract PackagePart class. It contains an override for GetStreamCore. /// internal class SiteOfOriginPart : System.IO.Packaging.PackagePart { //----------------------------------------------------- // // Public Constructors // //----------------------------------------------------- #region Public Constructors internal SiteOfOriginPart(Package container, Uri uri) : base(container, uri) { } #endregion //------------------------------------------------------ // // Protected Methods // //----------------------------------------------------- #region Protected Methods protected override Stream GetStreamCore(FileMode mode, FileAccess access) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Getting stream."); #endif return GetStreamAndSetContentType(false); } protected override string GetContentTypeCore() { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Getting content type."); #endif GetStreamAndSetContentType(true); return _contentType.ToString(); } #endregion //------------------------------------------------------ // // Private Methods // //------------------------------------------------------ #region Private Methods private Stream GetStreamAndSetContentType(bool onlyNeedContentType) { lock (_globalLock) { if (onlyNeedContentType && _contentType != MS.Internal.ContentType.Empty) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Getting content type and using previously determined value"); #endif return null; } // If GetContentTypeCore is called before GetStream() // then we need to retrieve the stream to get the mime type. // That stream is then stored as _cacheStream and returned // the next time GetStreamCore() is called. if (_cacheStream != null) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + "SiteOfOriginPart: Using Cached stream"); #endif Stream temp = _cacheStream; _cacheStream = null; return temp; } if (_absoluteLocation == null) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Determining absolute uri for this resource"); #endif string original = Uri.ToString(); Invariant.Assert(original[0] == '/'); string uriMinusInitialSlash = original.Substring(1); // trim leading '/' _absoluteLocation = new Uri(SiteOfOriginContainer.SiteOfOrigin, uriMinusInitialSlash); } #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Making web request to " + _absoluteLocation); #endif // For performance reasons it is better to open local files directly // rather than make a FileWebRequest. Stream responseStream; if (SecurityHelper.AreStringTypesEqual(_absoluteLocation.Scheme, Uri.UriSchemeFile)) { responseStream = HandleFileSource(onlyNeedContentType); } else { responseStream = HandleWebSource(onlyNeedContentType); } return responseStream; } } private Stream HandleFileSource(bool onlyNeedContentType) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": Opening local file " + _absoluteLocation); #endif if (_contentType == MS.Internal.ContentType.Empty) { _contentType = MS.Internal.MimeTypeMapper.GetMimeTypeFromUri(Uri); } if (!onlyNeedContentType) { return File.OpenRead(_absoluteLocation.LocalPath); } return null; } private Stream HandleWebSource(bool onlyNeedContentType) { WebResponse response = WpfWebRequestHelper.CreateRequestAndGetResponse(_absoluteLocation); Stream responseStream = response.GetResponseStream(); #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": Successfully retrieved stream from " + _absoluteLocation); #endif if (_contentType == MS.Internal.ContentType.Empty) { #if DEBUG if (SiteOfOriginContainer._traceSwitch.Enabled) System.Diagnostics.Trace.TraceInformation( DateTime.Now.ToLongTimeString() + " " + DateTime.Now.Millisecond + " " + System.Threading.Thread.CurrentThread.ManagedThreadId + ": SiteOfOriginPart: Setting _contentType"); #endif _contentType = WpfWebRequestHelper.GetContentType(response); } if (onlyNeedContentType) { _cacheStream = responseStream; } return responseStream; } #endregion //----------------------------------------------------- // // Private Fields // //------------------------------------------------------ #region Private Members Uri _absoluteLocation = null; ContentType _contentType = MS.Internal.ContentType.Empty; Stream _cacheStream = null; private Object _globalLock = new Object(); #endregion Private Members } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- Material.cs
- Padding.cs
- ExclusiveTcpListener.cs
- CodeValidator.cs
- PrintController.cs
- SplineQuaternionKeyFrame.cs
- CodeVariableDeclarationStatement.cs
- AuthenticateEventArgs.cs
- SiteMapNodeItem.cs
- cookie.cs
- WebPartsPersonalizationAuthorization.cs
- ZipArchive.cs
- Int16Converter.cs
- HiddenFieldDesigner.cs
- Nodes.cs
- SpecialNameAttribute.cs
- TransformPattern.cs
- SQLMoney.cs
- TypeLoadException.cs
- MetaTableHelper.cs
- TaskFactory.cs
- XmlAnyElementAttributes.cs
- GPPOINT.cs
- UTF7Encoding.cs
- DataServiceStreamResponse.cs
- UnsafeNetInfoNativeMethods.cs
- StrongName.cs
- SqlRecordBuffer.cs
- ModuleConfigurationInfo.cs
- BaseTemplateBuildProvider.cs
- MetadataSection.cs
- Point3DCollectionValueSerializer.cs
- ButtonFieldBase.cs
- HtmlImage.cs
- StringAnimationBase.cs
- CheckPair.cs
- WebBaseEventKeyComparer.cs
- GradientStopCollection.cs
- Int64Animation.cs
- MultilineStringConverter.cs
- TagMapCollection.cs
- MetadataItemSerializer.cs
- DefaultPropertyAttribute.cs
- UrlMappingsSection.cs
- XsltSettings.cs
- Rotation3DAnimation.cs
- XmlCodeExporter.cs
- ScopeCollection.cs
- SolidBrush.cs
- ClientScriptManager.cs
- SHA256Cng.cs
- StreamMarshaler.cs
- NamespaceCollection.cs
- HMACMD5.cs
- XmlBinaryWriter.cs
- CompositeCollection.cs
- Trigger.cs
- SerializationUtility.cs
- FigureParaClient.cs
- HtmlFormAdapter.cs
- RequestCacheManager.cs
- HtmlTextArea.cs
- ServiceModelEnumValidator.cs
- HttpChannelListener.cs
- Validator.cs
- SettingsSavedEventArgs.cs
- Property.cs
- WebPartConnectionsConfigureVerb.cs
- DynamicMethod.cs
- FixedSOMPageConstructor.cs
- RuleSetCollection.cs
- _BaseOverlappedAsyncResult.cs
- FileDialogCustomPlaces.cs
- DataControlImageButton.cs
- ToolStripTextBox.cs
- RootBrowserWindowProxy.cs
- PtsHelper.cs
- SystemIPInterfaceProperties.cs
- StyleCollection.cs
- AuthenticationConfig.cs
- EntryIndex.cs
- RandomNumberGenerator.cs
- MsmqChannelFactory.cs
- EditBehavior.cs
- MetadataItem_Static.cs
- DbConnectionInternal.cs
- AttributeCollection.cs
- TextElement.cs
- AdapterUtil.cs
- IfAction.cs
- UDPClient.cs
- WindowsTokenRoleProvider.cs
- FileInfo.cs
- WebHeaderCollection.cs
- MediaSystem.cs
- VariableElement.cs
- WebEventTraceProvider.cs
- mda.cs
- SchemaComplexType.cs
- HtmlHistory.cs