CategoryState.cs source code in C# .NET

Source code for the .NET framework in C#

                        

Code:

/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / Tools / System.Activities.Presentation / System / Activities / Presentation / Base / Core / Internal / PropertyEditing / State / CategoryState.cs / 1305376 / CategoryState.cs

                            //---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------
namespace System.Activities.Presentation.Internal.PropertyEditing.State
{ 
    using System;
    using System.Diagnostics; 
    using System.Diagnostics.CodeAnalysis; 
    using System.Runtime;
 
    // 
    // Simple category state object that knows how to remember
    // two boolean flags: the expansion state of the category itself and the
    // expansion state of its advanced section. 
    // 
    internal class CategoryState : PersistedState 
    { 

        private const bool DefaultCategoryExpanded = true; 
        private const bool DefaultAdvancedSectionExpanded = true;

        private string _categoryName;
 
        private bool _categoryExpanded = DefaultCategoryExpanded;
        private bool _advancedSectionExpanded = DefaultAdvancedSectionExpanded; 
 
        // 
        // Basic ctor 
        // 
        // Name of the contained category
        [SuppressMessage("Microsoft.Performance", "CA1805:DoNotInitializeUnnecessarily")]
        public CategoryState(string categoryName) 
        {
            Fx.Assert(!string.IsNullOrEmpty(categoryName), "Expected a full category name"); 
            _categoryName = categoryName; 
        }
 
        // 
        // We key these state objects by the category names
        // 
        public override object Key 
        {
            get { return _categoryName; } 
        } 

        //  
        // Returns true if any of the contained values differ from the default
        // 
        public override bool IsSignificant
        { 
            get { return _categoryExpanded != DefaultCategoryExpanded || _advancedSectionExpanded != DefaultAdvancedSectionExpanded; }
        } 
 
        // 
        // Gets or sets a flag indicating whether this category should be expanded or collapsed 
        // 
        public bool CategoryExpanded
        {
            get { return _categoryExpanded; } 
            set { _categoryExpanded = value; }
        } 
 
        // 
        // Gets or sets a flag indicating whether this category should have its advanced section 
        // expanded or collapsed
        // 
        public bool AdvancedSectionExpanded
        { 
            get { return _advancedSectionExpanded; }
            set { _advancedSectionExpanded = value; } 
        } 

        //  
        // Serializes this object into a simple string (AppDomains like strings).
        //
        // Format: CategoryName,CategoryExpanded,AdvancedExpanded;NextCategoryName,CategoryExpanded,AdvancedExpanded;...
        // Where bools are recorded as 0 = false and 1 = true and ';' and ',' are escaped 
        // 
        // Serialized version of this state object (may be null) 
        protected override string SerializeCore() 
        {
            return string.Concat( 
                PersistedStateUtilities.Escape(_categoryName),
                ',',
                PersistedStateUtilities.BoolToDigit(_categoryExpanded),
                ',', 
                PersistedStateUtilities.BoolToDigit(_advancedSectionExpanded));
        } 
 
        // 
        // Attempts to deserialize a string into a CategoryState object 
        // 
        // String to deserialize
        // Instance of CategoryState if the serialized string was valid, null otherwise.
        public static CategoryState Deserialize(string categoryStateString) 
        {
            string[] args = categoryStateString.Split(','); 
            if (args == null || args.Length != 3) 
            {
                return null; 
            }

            bool? categoryExpanded = PersistedStateUtilities.DigitToBool(args[1]);
            bool? advancedSectionExpanded = PersistedStateUtilities.DigitToBool(args[2]); 
            if (categoryExpanded == null || advancedSectionExpanded == null)
            { 
                return null; 
            }
 
            string categoryName = PersistedStateUtilities.Unescape(args[0]);
            if (string.IsNullOrEmpty(categoryName))
            {
                return null; 
            }
 
            CategoryState categoryState = new CategoryState(categoryName); 
            categoryState.CategoryExpanded = (bool)categoryExpanded;
            categoryState.AdvancedSectionExpanded = (bool)advancedSectionExpanded; 
            return categoryState;
        }
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------
namespace System.Activities.Presentation.Internal.PropertyEditing.State
{ 
    using System;
    using System.Diagnostics; 
    using System.Diagnostics.CodeAnalysis; 
    using System.Runtime;
 
    // 
    // Simple category state object that knows how to remember
    // two boolean flags: the expansion state of the category itself and the
    // expansion state of its advanced section. 
    // 
    internal class CategoryState : PersistedState 
    { 

        private const bool DefaultCategoryExpanded = true; 
        private const bool DefaultAdvancedSectionExpanded = true;

        private string _categoryName;
 
        private bool _categoryExpanded = DefaultCategoryExpanded;
        private bool _advancedSectionExpanded = DefaultAdvancedSectionExpanded; 
 
        // 
        // Basic ctor 
        // 
        // Name of the contained category
        [SuppressMessage("Microsoft.Performance", "CA1805:DoNotInitializeUnnecessarily")]
        public CategoryState(string categoryName) 
        {
            Fx.Assert(!string.IsNullOrEmpty(categoryName), "Expected a full category name"); 
            _categoryName = categoryName; 
        }
 
        // 
        // We key these state objects by the category names
        // 
        public override object Key 
        {
            get { return _categoryName; } 
        } 

        //  
        // Returns true if any of the contained values differ from the default
        // 
        public override bool IsSignificant
        { 
            get { return _categoryExpanded != DefaultCategoryExpanded || _advancedSectionExpanded != DefaultAdvancedSectionExpanded; }
        } 
 
        // 
        // Gets or sets a flag indicating whether this category should be expanded or collapsed 
        // 
        public bool CategoryExpanded
        {
            get { return _categoryExpanded; } 
            set { _categoryExpanded = value; }
        } 
 
        // 
        // Gets or sets a flag indicating whether this category should have its advanced section 
        // expanded or collapsed
        // 
        public bool AdvancedSectionExpanded
        { 
            get { return _advancedSectionExpanded; }
            set { _advancedSectionExpanded = value; } 
        } 

        //  
        // Serializes this object into a simple string (AppDomains like strings).
        //
        // Format: CategoryName,CategoryExpanded,AdvancedExpanded;NextCategoryName,CategoryExpanded,AdvancedExpanded;...
        // Where bools are recorded as 0 = false and 1 = true and ';' and ',' are escaped 
        // 
        // Serialized version of this state object (may be null) 
        protected override string SerializeCore() 
        {
            return string.Concat( 
                PersistedStateUtilities.Escape(_categoryName),
                ',',
                PersistedStateUtilities.BoolToDigit(_categoryExpanded),
                ',', 
                PersistedStateUtilities.BoolToDigit(_advancedSectionExpanded));
        } 
 
        // 
        // Attempts to deserialize a string into a CategoryState object 
        // 
        // String to deserialize
        // Instance of CategoryState if the serialized string was valid, null otherwise.
        public static CategoryState Deserialize(string categoryStateString) 
        {
            string[] args = categoryStateString.Split(','); 
            if (args == null || args.Length != 3) 
            {
                return null; 
            }

            bool? categoryExpanded = PersistedStateUtilities.DigitToBool(args[1]);
            bool? advancedSectionExpanded = PersistedStateUtilities.DigitToBool(args[2]); 
            if (categoryExpanded == null || advancedSectionExpanded == null)
            { 
                return null; 
            }
 
            string categoryName = PersistedStateUtilities.Unescape(args[0]);
            if (string.IsNullOrEmpty(categoryName))
            {
                return null; 
            }
 
            CategoryState categoryState = new CategoryState(categoryName); 
            categoryState.CategoryExpanded = (bool)categoryExpanded;
            categoryState.AdvancedSectionExpanded = (bool)advancedSectionExpanded; 
            return categoryState;
        }
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
                        

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