Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / fx / src / xsp / System / Web / UI / WebParts / TransformerConfigurationWizardBase.cs / 1 / TransformerConfigurationWizardBase.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.UI.WebControls.WebParts { using System; using System.ComponentModel; using System.Diagnostics; using System.Web.UI.WebControls; internal abstract class TransformerConfigurationWizardBase : Wizard, ITransformerConfigurationControl { private string[] _oldProviderNames; private string[] _oldConsumerNames; private const int baseIndex = 0; private const int oldProviderNamesIndex = 1; private const int oldConsumerNamesIndex = 2; private const int controlStateArrayLength = 3; private static readonly object EventCancelled = new object(); private static readonly object EventSucceeded = new object(); protected abstract PropertyDescriptorCollection ConsumerSchema { get; } protected string[] OldConsumerNames { get { return _oldConsumerNames; } set { _oldConsumerNames = value; } } protected string[] OldProviderNames { get { return _oldProviderNames; } set { _oldProviderNames = value; } } protected abstract PropertyDescriptorCollection ProviderSchema { get; } public event EventHandler Cancelled { add { Events.AddHandler(EventCancelled, value); } remove { Events.RemoveHandler(EventCancelled, value); } } public event EventHandler Succeeded { add { Events.AddHandler(EventSucceeded, value); } remove { Events.RemoveHandler(EventSucceeded, value); } } protected abstract void CreateWizardSteps(); protected internal override void LoadControlState(object savedState) { if (savedState == null) { // Create wizard steps before loading base ControlState. CreateWizardSteps(); base.LoadControlState(null); } else { object[] myState = (object[])savedState; if (myState.Length != controlStateArrayLength) { throw new ArgumentException(SR.GetString(SR.Invalid_ControlState)); } if (myState[oldProviderNamesIndex] != null) { OldProviderNames = (string[])myState[oldProviderNamesIndex]; } if (myState[oldConsumerNamesIndex] != null) { OldConsumerNames = (string[])myState[oldConsumerNamesIndex]; } // Create wizard steps before loading base ControlState. CreateWizardSteps(); base.LoadControlState(myState[baseIndex]); } } protected override void OnCancelButtonClick(EventArgs e) { OnCancelled(EventArgs.Empty); base.OnCancelButtonClick(e); } private void OnCancelled(EventArgs e) { EventHandler handler = (EventHandler)Events[EventCancelled]; if (handler != null) { handler(this, e); } } protected override void OnFinishButtonClick(WizardNavigationEventArgs e) { OnSucceeded(EventArgs.Empty); base.OnFinishButtonClick(e); } protected internal override void OnInit(EventArgs e) { DisplayCancelButton = true; DisplaySideBar = false; if (Page != null) { Page.RegisterRequiresControlState(this); Page.PreRenderComplete += new EventHandler(this.OnPagePreRenderComplete); } base.OnInit(e); } private void OnPagePreRenderComplete(object sender, EventArgs e) { // Copy current schemas into arrays string[] providerNames = ConvertSchemaToArray(ProviderSchema); string[] consumerNames = ConvertSchemaToArray(ConsumerSchema); // If current schemas are not the same as the old schemas, or if the WizardSteps have // not been created yet, update the old schemas and recreate the Wizard steps. if (StringArraysDifferent(providerNames, OldProviderNames) || StringArraysDifferent(consumerNames, OldConsumerNames) || WizardSteps.Count == 0) { OldProviderNames = providerNames; OldConsumerNames = consumerNames; WizardSteps.Clear(); ClearChildState(); CreateWizardSteps(); ActiveStepIndex = 0; } // We should always have at least 1 WizardStep before we Render Debug.Assert(WizardSteps.Count > 0); } private string[] ConvertSchemaToArray(PropertyDescriptorCollection schema) { string[] names = null; if (schema != null && schema.Count > 0) { names = new string[schema.Count * 2]; for (int i=0; i < schema.Count; i++) { PropertyDescriptor descriptor = schema[i]; if (descriptor != null) { names[2*i] = descriptor.DisplayName; names[2*i + 1] = descriptor.Name; } } } return names; } private void OnSucceeded(EventArgs e) { EventHandler handler = (EventHandler)Events[EventSucceeded]; if (handler != null) { handler(this, e); } } protected internal override object SaveControlState() { object[] myState = new object[controlStateArrayLength]; myState[baseIndex] = base.SaveControlState(); myState[oldProviderNamesIndex] = OldProviderNames; myState[oldConsumerNamesIndex] = OldConsumerNames; for (int i=0; i < controlStateArrayLength; i++) { if (myState[i] != null) { return myState; } } // More performant to return null than an array of null values return null; } private bool StringArraysDifferent(string[] arrA, string[] arrB) { int lengthA = (arrA == null) ? 0 : arrA.Length; int lengthB = (arrB == null) ? 0 : arrB.Length; if (lengthA != lengthB) { return true; } else { for (int i=0; i < lengthB; i++) { if (arrA[i] != arrB[i]) { return true; } } } return false; } } } // 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
- ConfigurationValidatorBase.cs
- SmiContext.cs
- TemplateControlParser.cs
- Control.cs
- ArrangedElement.cs
- AnnotationObservableCollection.cs
- ClientSettingsProvider.cs
- PropertyPathConverter.cs
- QuaternionAnimation.cs
- CharEnumerator.cs
- PartialArray.cs
- SafeEventLogWriteHandle.cs
- SqlRecordBuffer.cs
- DataTableReaderListener.cs
- PackageRelationshipCollection.cs
- BigInt.cs
- hresults.cs
- CharEnumerator.cs
- InvalidWMPVersionException.cs
- ObservableDictionary.cs
- DesignerVerb.cs
- TraceContextEventArgs.cs
- ElementFactory.cs
- ColumnTypeConverter.cs
- GCHandleCookieTable.cs
- FixedHighlight.cs
- InputScopeNameConverter.cs
- ContainerSelectorGlyph.cs
- LocationInfo.cs
- KoreanLunisolarCalendar.cs
- CommonDialog.cs
- DescendantOverDescendantQuery.cs
- ThreadExceptionDialog.cs
- DataPagerCommandEventArgs.cs
- DefaultMemberAttribute.cs
- Comparer.cs
- Matrix3D.cs
- SafeReversePInvokeHandle.cs
- EditorServiceContext.cs
- MimeWriter.cs
- JobDuplex.cs
- ZoneLinkButton.cs
- TraceProvider.cs
- ApplicationFileParser.cs
- RotateTransform3D.cs
- PageBuildProvider.cs
- LambdaCompiler.ControlFlow.cs
- SqlCrossApplyToCrossJoin.cs
- JoinCqlBlock.cs
- Console.cs
- SoundPlayer.cs
- HasRunnableWorkflowEvent.cs
- SparseMemoryStream.cs
- RepeaterItemCollection.cs
- OuterGlowBitmapEffect.cs
- ConfigurationErrorsException.cs
- HtmlInputControl.cs
- Size.cs
- SQLChars.cs
- IIS7WorkerRequest.cs
- XmlStringTable.cs
- Geometry.cs
- MembershipPasswordException.cs
- DiffuseMaterial.cs
- Model3DGroup.cs
- EventlogProvider.cs
- ObjectDataSourceMethodEditor.cs
- DataGridAutoGeneratingColumnEventArgs.cs
- PixelFormats.cs
- Form.cs
- IsolatedStorageFile.cs
- TextTabProperties.cs
- UInt16Storage.cs
- ScriptingJsonSerializationSection.cs
- WindowsToolbarAsMenu.cs
- ReadOnlyNameValueCollection.cs
- XmlIterators.cs
- StorageEndPropertyMapping.cs
- RowVisual.cs
- MethodToken.cs
- DataGridViewRowPrePaintEventArgs.cs
- LambdaCompiler.Address.cs
- HostProtectionException.cs
- CheckBoxList.cs
- ProcessRequestAsyncResult.cs
- ObjectViewQueryResultData.cs
- Random.cs
- RegexWriter.cs
- ProfileGroupSettingsCollection.cs
- QilTargetType.cs
- WebBrowserSiteBase.cs
- Native.cs
- PropertySourceInfo.cs
- WorkerRequest.cs
- DefaultBindingPropertyAttribute.cs
- cookiecontainer.cs
- OpenTypeLayoutCache.cs
- OutputCacheProviderCollection.cs
- TrackingStringDictionary.cs
- TextTreeUndo.cs