Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / System / Windows / MultiDataTrigger.cs / 1 / MultiDataTrigger.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: Defines MultiDataTrigger object, akin to MultiTrigger except it // gets values from data. // //--------------------------------------------------------------------------- using MS.Utility; using System; using System.Diagnostics; using System.Collections.Specialized; using System.ComponentModel; using System.Windows.Data; using System.Windows.Markup; namespace System.Windows { ////// A multiple Style data conditional dependency driver /// [ContentProperty("Setters")] public sealed class MultiDataTrigger : TriggerBase, IAddChild { ////// Conditions collection /// [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)] public ConditionCollection Conditions { get { // Verify Context Access VerifyAccess(); return _conditions; } } ////// Collection of Setter objects, which describes what to apply /// when this trigger is active. /// [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)] public SetterBaseCollection Setters { get { // Verify Context Access VerifyAccess(); if( _setters == null ) { _setters = new SetterBaseCollection(); } return _setters; } } ////// This method is called to Add a Setter object as a child of the Style. /// /// /// The object to add as a child; it must be a Setter or subclass. /// void IAddChild.AddChild (Object value) { // Verify Context Access VerifyAccess(); Setters.Add(Trigger.CheckChildIsSetter(value)); } ////// This method is called by the parser when text appears under the tag in markup. /// As default Styles do not support text, calling this method has no effect. /// /// /// Text to add as a child. /// void IAddChild.AddText (string text) { // Verify Context Access VerifyAccess(); XamlSerializerUtil.ThrowIfNonWhiteSpaceInAddText(text, this); } internal override void Seal() { if (IsSealed) { return; } // Process the _setters collection: Copy values into PropertyValueList and seal the Setter objects. ProcessSettersCollection(_setters); if (_conditions.Count > 0) { // Seal conditions _conditions.Seal(ValueLookupType.DataTrigger); } // Build conditions array from collection TriggerConditions = new TriggerCondition[_conditions.Count]; for (int i = 0; i < TriggerConditions.Length; ++i) { if (_conditions[i].SourceName != null && _conditions[i].SourceName.Length > 0) { throw new InvalidOperationException(SR.Get(SRID.SourceNameNotSupportedForDataTriggers)); } TriggerConditions[i] = new TriggerCondition( _conditions[i].Binding, LogicalOp.Equals, _conditions[i].Value); } // Set conditions array for all property triggers for (int i = 0; i < PropertyValues.Count; ++i) { PropertyValue propertyValue = PropertyValues[i]; propertyValue.Conditions = TriggerConditions; switch (propertyValue.ValueType) { case PropertyValueType.Trigger: propertyValue.ValueType = PropertyValueType.DataTrigger; break; case PropertyValueType.PropertyTriggerResource: propertyValue.ValueType = PropertyValueType.DataTriggerResource; break; default: throw new InvalidOperationException(SR.Get(SRID.UnexpectedValueTypeForDataTrigger, propertyValue.ValueType)); } // Put back modified struct PropertyValues[i] = propertyValue; } base.Seal(); } // evaluate the current state of the trigger internal override bool GetCurrentState(DependencyObject container, UncommonFielddataField) { bool retVal = (TriggerConditions.Length > 0); for( int i = 0; retVal && i < TriggerConditions.Length; i++ ) { retVal = TriggerConditions[i].ConvertAndMatch(StyleHelper.GetDataTriggerValue(dataField, container, TriggerConditions[i].Binding)); } return retVal; } private ConditionCollection _conditions = new ConditionCollection(); private SetterBaseCollection _setters = null; } } // 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
- RequestSecurityToken.cs
- X509Extension.cs
- FormCollection.cs
- ProfileGroupSettingsCollection.cs
- SharedPersonalizationStateInfo.cs
- ItemCheckedEvent.cs
- PartialList.cs
- CharKeyFrameCollection.cs
- PixelShader.cs
- SerializationStore.cs
- MobileControlsSectionHelper.cs
- RequestDescription.cs
- HttpCacheVaryByContentEncodings.cs
- DBConnectionString.cs
- MarkedHighlightComponent.cs
- UrlAuthorizationModule.cs
- MailWriter.cs
- AlternateView.cs
- Soap.cs
- SaveFileDialog.cs
- SafeUserTokenHandle.cs
- DictionaryEntry.cs
- RotateTransform.cs
- _FtpDataStream.cs
- WindowsHyperlink.cs
- ApplicationTrust.cs
- TrackingParticipant.cs
- Function.cs
- SafeFreeMibTable.cs
- HostExecutionContextManager.cs
- ContentElement.cs
- ModuleElement.cs
- DynamicFilter.cs
- DbParameterCollectionHelper.cs
- RSAPKCS1KeyExchangeFormatter.cs
- TdsParser.cs
- Soap11ServerProtocol.cs
- TextServicesCompartmentContext.cs
- MissingMethodException.cs
- MethodInfo.cs
- ContextMenuAutomationPeer.cs
- XComponentModel.cs
- DataControlPagerLinkButton.cs
- DocumentViewerBase.cs
- UxThemeWrapper.cs
- XPathNavigator.cs
- OpacityConverter.cs
- RadioButtonRenderer.cs
- ProcessProtocolHandler.cs
- SwitchCase.cs
- SerializationEventsCache.cs
- UseManagedPresentationBindingElementImporter.cs
- LockedBorderGlyph.cs
- PerformanceCounterPermissionAttribute.cs
- PenCursorManager.cs
- UpdateTracker.cs
- BindingMAnagerBase.cs
- CheckoutException.cs
- DesignerCategoryAttribute.cs
- LinearGradientBrush.cs
- DSASignatureFormatter.cs
- DependencyProperty.cs
- PointHitTestResult.cs
- DbUpdateCommandTree.cs
- ToolStripPanelCell.cs
- WebPartTransformerCollection.cs
- EmptyStringExpandableObjectConverter.cs
- TextParagraphProperties.cs
- EventMap.cs
- NotifyInputEventArgs.cs
- ImageFormatConverter.cs
- HashJoinQueryOperatorEnumerator.cs
- Quaternion.cs
- VBCodeProvider.cs
- ApplicationTrust.cs
- SecurityRuntime.cs
- Error.cs
- DataSourceView.cs
- SingleKeyFrameCollection.cs
- WebPartPersonalization.cs
- SerialErrors.cs
- Currency.cs
- SecurityHeaderTokenResolver.cs
- LogEntryHeaderSerializer.cs
- XmlArrayItemAttributes.cs
- Sql8ConformanceChecker.cs
- DataPagerCommandEventArgs.cs
- VectorAnimationUsingKeyFrames.cs
- DynamicPropertyReader.cs
- SettingsAttributes.cs
- EpmSyndicationContentSerializer.cs
- MembershipUser.cs
- ObjectTypeMapping.cs
- ResourceExpression.cs
- clipboard.cs
- Size3DValueSerializer.cs
- DisplayNameAttribute.cs
- SizeIndependentAnimationStorage.cs
- FlowPosition.cs
- MenuAutomationPeer.cs