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GoalBook - A Hybrid Smart Client

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4.86/5 (24 votes)
25 Sep 2009CPOL10 min read 79K   834   69  
A WPF hybrid smart client that synchronises your goals with the Toodledo online To-do service.
//===============================================================================
// Goal Book.
// Copyright © 2009 Mark Brownsword. 
//===============================================================================

#region Using Statements
using System;
using System.Runtime.Serialization;
using System.Text.RegularExpressions;
using System.Xml.Linq;
using Csla;
using Csla.Validation;
using GoalBook.Infrastructure.Properties;
#endregion

namespace GoalBook.Infrastructure.ObjectModel
{
    /// <summary>
    /// Goal Type.
    /// </summary>    
    [Serializable] public class Goal : BusinessBase<Goal>
    {        
        #region Constants and Enums 
        #endregion

        #region Inner Classes and Structures
        #endregion

        #region Delegates and Events
        #endregion

        #region Instance and Shared Fields
        #endregion

        #region Constructors
        /// <summary>
        /// Constructor.
        /// </summary>
        private Goal()
        {
            MarkAsChild();
        }
        /// <summary>
        /// Constructor. Use this constructor for new records.
        /// </summary>
        public Goal(Guid goalID) : this()
        {
            LoadProperty(IdProperty, goalID);
            
            //Execute business rules against each property.
            ValidationRules.CheckRules();
        }
        /// <summary>
        /// Constructor. Use this constructor for existing records.
        /// </summary>        
        public Goal(Guid goalID, int levelID, Guid contributesID,
            bool archived, string title) : this()
        {
            LoadProperty(IdProperty, goalID);            
            LoadProperty(LevelProperty, levelID);
            LoadProperty(ContributesProperty, contributesID);
            LoadProperty(ArchivedProperty, archived);
            LoadProperty(TitleProperty, title);            
            
            //Execute business rules against each property.
            ValidationRules.CheckRules();
                        
            MarkOld();
        }
        /// <summary>
        /// Constructor. Use this constructor for existing records.
        /// </summary>        
        public Goal(Guid goalID, int levelID, Guid contributesID,
            bool archived, string title, int externalIdentifier)
            : this()
        {
            LoadProperty(IdProperty, goalID);
            LoadProperty(LevelProperty, levelID);
            LoadProperty(ContributesProperty, contributesID);
            LoadProperty(ArchivedProperty, archived);
            LoadProperty(TitleProperty, title);
            LoadProperty(ExternalIdentifierProperty, externalIdentifier);

            //Execute business rules against each property.
            ValidationRules.CheckRules();

            MarkOld();
        }
        #endregion

        #region Properties
        public static PropertyInfo<Guid> IdProperty = RegisterProperty(typeof(Goal), new PropertyInfo<Guid>("GoalID"));
        public static PropertyInfo<int> LevelProperty = RegisterProperty(typeof(Goal), new PropertyInfo<int>("LevelID", "Level", -1));
        public static PropertyInfo<Guid> ContributesProperty = RegisterProperty(typeof(Goal), new PropertyInfo<Guid>("ContributesID", "Contributes"));
        public static PropertyInfo<bool> ArchivedProperty = RegisterProperty(typeof(Goal), new PropertyInfo<bool>("Archived"));
        public static PropertyInfo<string> TitleProperty = RegisterProperty(typeof(Goal), new PropertyInfo<string>("Title"));
        public static PropertyInfo<int> ExternalIdentifierProperty = RegisterProperty(typeof(Goal), new PropertyInfo<int>("ExternalIdentifier"));
        
        /// <summary>
        /// Reference to GoalID field. This is the unique identifier for the Goal.
        /// </summary>        
        public Guid GoalID
        {
            get 
            { 
                CanReadProperty(IdProperty.Name, true); 
                return GetProperty(IdProperty); 
            }
            set
            {
                CanWriteProperty(IdProperty.Name, true);
                if (!GetProperty(IdProperty).Equals(value))
                {
                    SetProperty(IdProperty, value);
                    PropertyHasChanged(IdProperty.Name);
                }
            }            
        }        
        /// <summary>
        /// Reference to Level field. Valid values are {0=Lifetime; 1=Long-term; 2=Short-term}.
        /// </summary>
        public int LevelID
        {
            get
            {
                CanReadProperty(LevelProperty.Name, true);
                return GetProperty(LevelProperty);
            }
            set 
            {
                CanWriteProperty(LevelProperty.Name, true);                
                if (!GetProperty(LevelProperty).Equals(value))
                {
                    SetProperty(LevelProperty, value);
                    PropertyHasChanged(LevelProperty.Name);                    
                }
            }
        }
        /// <summary>
        /// Reference to Contributes field. The higher level goal that this goal contributes to.
        /// </summary>        
        public Guid ContributesID
        {
            get
            {
                CanReadProperty(ContributesProperty.Name, true);
                return GetProperty(ContributesProperty);
            }
            set
            {
                CanWriteProperty(ContributesProperty.Name, true);                
                if (!GetProperty(ContributesProperty).Equals(value))
                {
                    SetProperty(ContributesProperty, value);
                    PropertyHasChanged(ContributesProperty.Name);
                }
            }
        }
        /// <summary>
        /// Reference to Archived field.
        /// </summary>        
        public bool Archived
        {
            get
            {
                CanReadProperty(ArchivedProperty.Name, true);
                return GetProperty(ArchivedProperty);
            }
            set
            {
                CanWriteProperty(ArchivedProperty.Name, true);                
                if (!GetProperty(ArchivedProperty).Equals(value))
                {
                    SetProperty(ArchivedProperty, value);
                    PropertyHasChanged(ArchivedProperty.Name);
                }
            }
        }
        /// <summary>
        /// Reference to Title field.
        /// </summary>        
        public string Title
        {
            get
            {
                CanReadProperty(TitleProperty.Name, true);
                return GetProperty(TitleProperty);
            }
            set
            {
                CanWriteProperty(TitleProperty.Name, true);                
                if (!GetProperty(TitleProperty).Equals(value))
                {
                    SetProperty(TitleProperty, value);
                    PropertyHasChanged(TitleProperty.Name);
                }
            }            
        }        
        /// <summary>
        /// Reference to ExternalIdentifier.
        /// </summary>        
        public int ExternalIdentifier 
        {
            get
            {
                CanReadProperty(ExternalIdentifierProperty.Name, true);
                return GetProperty(ExternalIdentifierProperty);
            }
            set
            {
                CanWriteProperty(ExternalIdentifierProperty.Name, true);
                if (!GetProperty(ExternalIdentifierProperty).Equals(value))
                {
                    SetProperty(ExternalIdentifierProperty, value);
                    PropertyHasChanged(ExternalIdentifierProperty.Name);
                }
            }
        }
        /// <summary>
        /// Reference to LastModified.
        /// </summary>        
        public DateTime LastModified { get; set; }
        /// <summary>
        /// Reference to SyncRequired (client -> server).
        /// </summary>        
        public bool SyncRequired { get; set; }        
        #endregion

        #region Private and Protected Methods
        #endregion

        #region Public and internal Methods

        #region External
        /// <summary>
        /// Serialize As XElement.
        /// </summary>        
        public XElement SerializeAsXElement()
        {
            XElement goalElement = new XElement(Constants.GoalSerializationContants.SERIALIZATION_GOAL,
                    new XAttribute(Constants.GoalSerializationContants.SERIALIZATION_GOALID, this.GoalID),
                    new XAttribute(Constants.GoalSerializationContants.SERIALIZATION_LEVELID, this.LevelID),
                    new XAttribute(Constants.GoalSerializationContants.SERIALIZATION_CONTRIBUTESID, this.ContributesID),
                    new XAttribute(Constants.GoalSerializationContants.SERIALIZATION_ARCHIVED, this.Archived),
                    new XAttribute(Constants.GoalSerializationContants.SERIALIZATION_TITLE, this.Title),
                    new XAttribute(Constants.GoalSerializationContants.SERIALIZATION_EXTERNALIDENTIFIER, this.ExternalIdentifier),
                    new XAttribute(Constants.GoalSerializationContants.SERIALIZATION_LASTMODIFIED, this.LastModified),
                    new XAttribute(Constants.GoalSerializationContants.SERIALIZATION_SYNCREQUIRED, this.SyncRequired)
                    );                       

            return goalElement;
        }
        /// <summary>
        /// Marks the Goal as Old.
        /// </summary>        
        public Goal MarkGoalOld()
        {
            if (base.IsDirty) { base.MarkOld(); }
            return this;
        }
        /// <summary>
        /// Reference to EditLevel.
        /// </summary>
        public int GetEditLevel()
        {
            return base.EditLevel;
        }
        /// <summary>
        /// MapFields. 
        /// </summary>        
        public void MapFields(Goal goal)
        {
            if (this.GoalID == goal.GoalID)
            {
                this.LevelID = goal.LevelID;
                this.ContributesID = goal.ContributesID;
                this.Archived = goal.Archived;
                this.Title = goal.Title;
                this.ExternalIdentifier = goal.ExternalIdentifier;

                ValidationRules.CheckRules();
            }
        }
        #endregion

        #region Validation Handlers
        /// <summary>
        /// TitleValidator.
        /// Called by BusinessBase RulesEngine.
        /// </summary>        
        public static bool TitleValidator<T>(T target, RuleArgs e) where T : Goal
        {
            //Validate Title.  
            const string titleRegex = @"^[a-zA-Z'`-´~!@#$%^&*()_+=/?.,<>0-9\/\s]{1,255}$";

            if (Regex.IsMatch(target.Title, titleRegex)) { return true; }
            else { e.Description = Resources.ValidationTitleMessage; }

            return false;
        }
        /// <summary>
        /// LevelValidator.
        /// Called by BusinessBase RulesEngine.
        /// </summary>        
        public static bool LevelValidator<T>(T target, RuleArgs e) where T : Goal
        {
            if (target.LevelID >= 0) { return true; }
            else { e.Description = Resources.ValidationLevelMessage; }
            
            return false;
        }
        /// <summary>
        /// Validate GoalID is not empty Guid. 
        /// Called by BusinessBase RulesEngine.
        /// </summary>        
        public static bool IdValidator<T>(T target, RuleArgs e) where T : Goal
        {
            if (target.GoalID == Guid.Empty) 
            {
                e.Description = Resources.ValidationIDMessage;
                return false; 
            }

            return true;
        }
        #endregion
        
        #endregion

        #region Event Handlers
        /// <summary>
        /// OnDeserialized Handler.
        /// </summary>        
        [OnDeserialized()]
        private void OnDeserializedHandler(StreamingContext context)
        {
            base.OnDeserialized(context);

            //Execute business rules against each property
            //when the item is deserialized.

            //ValidationRules.SuppressRuleChecking = true;
            ValidationRules.CheckRules();
        }
        #endregion

        #region Base Class Overrides
        /// <summary>
        /// OnPropertyChanged. Override to record LastModified.
        /// </summary>        
        protected override void OnPropertyChanged(string propertyName)
        {
            base.OnPropertyChanged(propertyName);

            //Set LastModified when propertyName has a value
            //(value is empty when Goal is marked clean).
            if (!string.IsNullOrEmpty(propertyName))
            {
                LastModified = DateTime.Now;                
                SyncRequired = true;                
            }
        }        
        /// <summary>
        /// Add Business Rules. Defines basic validation rules to execute against specified fields.         
        /// </summary>
        protected override void AddBusinessRules()
        {
            //Title.
            ValidationRules.AddRule<Goal>(TitleValidator, TitleProperty);
            
            //Level - Validate required values {0=Lifetime; 1=Long-term; 2=Short-term}
            ValidationRules.AddRule<Goal>(LevelValidator, LevelProperty);                 
            
            //Id - Validate value is Guid.
            ValidationRules.AddRule<Goal>(IdValidator, IdProperty);                        
        }
        /// <summary>
        /// Override for GetIdValue.
        /// </summary>        
        protected override object GetIdValue()
        {
            return GetProperty(IdProperty);
        }        
        /// <summary>
        /// Override for ToString.
        /// </summary>        
        public override string ToString()
        {
            return GetProperty(TitleProperty).ToString();
        }
        #endregion
    }
}

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Written By
Software Developer (Senior)
Australia Australia
I've been working as a software developer since 2000 and hold a Bachelor of Business degree from The Open Polytechnic of New Zealand. Computers are for people and I aim to build applications for people that they would want to use.

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