Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / MS / Internal / Controls / StickyNote / StickyNoteHelper.cs / 1305600 / StickyNoteHelper.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: Implementation of StickyNoteControl's internal helper classes. // // See spec at http://tabletpc/longhorn/Specs/StickyNoteControlSpec.mht // // History: // 04/19/2004 - waynezen - Expose more properties and methods // 02/17/2004 - waynezen - Moved to TabletFramework // 10/06/2003 - waynezen - Added Ink and snippet image supports. // 09/02/2003 - waynezen - Created. // //--------------------------------------------------------------------------- using MS.Internal.Annotations.Component; using MS.Utility; using System; using System.ComponentModel; using System.Collections; using System.Collections.Generic; using System.Diagnostics; using System.Globalization; using System.IO; using System.Reflection; using System.Resources; using System.Runtime.InteropServices; using System.Runtime.Serialization; using System.Security; using System.Security.Permissions; using System.Threading; using System.Windows; using System.Windows.Annotations; using System.Windows.Annotations.Storage; using System.Windows.Controls; using System.Windows.Controls.Primitives; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Ink; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Resources; using System.Windows.Markup; using System.Windows.Shapes; using System.Xml; using System.Xml.XPath; namespace MS.Internal.Controls.StickyNote { //------------------------------------------------------------------------------- // // Internal Classes // //------------------------------------------------------------------------------- #region Internal Classes // This is a helper class which is used as a lock which can lock or unlock a specified flag. The usage looks like: // // public class Test // { // public void MethodA() // { // // A lock is needed in a scope which can block MethodB likes a event handler. // using ( LockHelper.AutoLocker locker = new LockHelper.AutoLocker(InternalLocker, LockHelper.LockFlag.SliderValueChanged) ) // { // // Do some work. // } // } // // public void MethodB() // { // // We don't want to handle the below if the locker is locked. // if ( !InternalLocker.IsLocked() ) // { // // Do some work. // } // } // } internal class LockHelper { [Flags] public enum LockFlag { AnnotationChanged = 0x00000001, DataChanged = 0x00000002, } public class AutoLocker : IDisposable { public AutoLocker(LockHelper helper, LockFlag flag) { if(helper == null) { throw new ArgumentNullException("helper"); } Debug.Assert(!helper.IsLocked(flag)); _helper = helper; _flag = flag; // Lock the locker at the object's creation time. _helper.Lock(_flag); } public void Dispose() { Debug.Assert(_helper.IsLocked(_flag)); // Unlock the locker when it's being disposed. _helper.Unlock(_flag); GC.SuppressFinalize(this); } private AutoLocker() { } private LockHelper _helper; private LockFlag _flag; } public bool IsLocked(LockFlag flag) { return ( _backingStore & flag ) != 0; } private void Lock(LockFlag flag) { _backingStore |= flag; } private void Unlock(LockFlag flag) { _backingStore &= ( ~flag ); } private LockFlag _backingStore; } // This class contains all constants which is used by StickyNoteControl component. internal static class SNBConstants { //-------------------------------------------------------------------------------- // // Internal Fields // //------------------------------------------------------------------------------- #region Internal Fields // The style ID of StickyNote's children internal const string c_CloseButtonId = "PART_CloseButton"; internal const string c_TitleThumbId = "PART_TitleThumb"; internal const string c_BottomRightResizeThumbId = "PART_ResizeBottomRightThumb"; internal const string c_ContentControlId = "PART_ContentControl"; internal const string c_IconButtonId = "PART_IconButton"; internal const string c_CopyMenuId = "PART_CopyMenuItem"; internal const string c_PasteMenuId = "PART_PasteMenuItem"; internal const string c_ClipboardSeparatorId = "PART_ClipboardSeparator"; internal const string c_DeleteMenuId = "PART_DeleteMenuItem"; internal const string c_InkMenuId = "PART_InkMenuItem"; internal const string c_SelectMenuId = "PART_SelectMenuItem"; internal const string c_EraseMenuId = "PART_EraseMenuItem"; // CAF Resouce guids internal const string MetaResourceName = "Meta Data"; // Snc MetaData internal const string TextResourceName = "Text Data"; // Text internal const string InkResourceName = "Ink Data"; // Ink #endregion Internal Fields } #endregion Internal Classes } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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