Click here to Skip to main content
13,353,462 members (62,498 online)
Click here to Skip to main content

Stats

139.2K views
7.9K downloads
131 bookmarked
Posted 10 Aug 2011

AvalonDock and MVVM

, 9 Oct 2011
Demonstrates a technique for integrating AvalonDock with an MVVM application.
using System;
using System.Text;

namespace SampleApp.ViewModels
{
    /// <summary>
    /// The view-model for a text file document.
    /// </summary>
    public class TextFileDocumentViewModel : AbstractViewModel
    {
        /// <summary>
        /// The default name for untitled files.
        /// </summary>
        public static readonly string UntitledFileName = "Untitled.txt";

        /// <summary>
        /// The file path of the document.
        /// </summary>
        private string filePath = string.Empty;

        /// <summary>
        /// The text of the document.
        /// </summary>
        private string text = string.Empty;

        /// <summary>
        /// Set to 'true' when the document is modified and needs to be saved.
        /// </summary>
        private bool isModified = false;

        public TextFileDocumentViewModel(string filePath, string text, bool isModified)
        {
            this.filePath = filePath;
            this.text = text;
            this.isModified = isModified;
        }

        /// <summary>
        /// The title of the document.
        /// </summary>
        public string Title
        {
            get
            {
                var title = new StringBuilder();
                title.Append(this.FileName);

                if (this.IsModified)
                {
                    title.Append("*");
                }

                return title.ToString();
            }
        }

        /// <summary>
        /// Tooltip to display in the UI.
        /// </summary>
        public string ToolTip
        {
            get
            {
                var toolTip = new StringBuilder();
                if (string.IsNullOrEmpty(this.FilePath))
                {
                    toolTip.Append(UntitledFileName);
                }
                else
                {
                    toolTip.Append(this.FilePath);
                }

                if (this.IsModified)
                {
                    toolTip.Append("*");
                }

                return toolTip.ToString();
            }
        }

        /// <summary>
        /// Name of the file (with the path stripped off).
        /// </summary>
        public string FileName
        {
            get
            {
                if (string.IsNullOrEmpty(this.FilePath))
                {
                    return UntitledFileName;
                }

                return System.IO.Path.GetFileName(this.FilePath);
            }
        }

        /// <summary>
        /// The file path of the document.
        /// </summary>
        public string FilePath
        {
            get
            {
                return filePath;
            }
            set
            {
                if (filePath == value)
                {
                    return;
                }

                filePath = value;

                OnPropertyChanged("FilePath");
                OnPropertyChanged("FileName");
                OnPropertyChanged("Title");
                OnPropertyChanged("ToolTip");
            }
        }

        /// <summary>
        /// The path to the directory that contains the file.
        /// </summary>
        public string DirectoryPath
        {
            get
            {
                if (string.IsNullOrEmpty(this.FilePath))
                {
                    return string.Empty;
                }

                return System.IO.Path.GetDirectoryName(this.FilePath);  
            }
        }

        /// <summary>
        /// The text of the document.
        /// </summary>
        public string Text
        {
            get
            {
                return text;
            }
            set
            {
                if (text == value)
                {
                    return;
                }

                text = value;

                this.IsModified = true;

                OnPropertyChanged("Text");
            }
        }

        /// <summary>
        /// Set to 'true' when the document is modified and needs to be saved.
        /// </summary>
        public bool IsModified 
        {
            get
            {
                return isModified;
            }
            set
            {
                if (isModified == value)
                {
                    return;
                }

                isModified = value;

                OnPropertyChanged("IsModified");
                OnPropertyChanged("Title");
                OnPropertyChanged("ToolTip");

                if (this.IsModifiedChanged != null)
                {
                    this.IsModifiedChanged(this, EventArgs.Empty);
                }
            }
        }

        /// <summary>
        /// Event raised when the IsModified has changed.
        /// </summary>
        public event EventHandler<EventArgs> IsModifiedChanged;
    }
}

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Share

About the Author

Ashley Davis
Team Leader Code Capers
Australia Australia
I have a background in video game development with many years in serious games, simulations and VR. Making technology work for business is what I do: building bespoke software solutions that span multiple platforms.

I have many years of experience managing development teams, preparing technical strategies and creation of software products. I can explain complicated technology to senior management. I have delivered cutting-edge products in fast-moving and high-pressure environments. I know how to focus and prioritize so that the important things get done.

I am a passionate technologist and agile practitioner. Agile techniques have bought me much professional and personal benefit. I have had great success with TDD and am convinced of its ability to produce better code that stabilizes more quickly while being evolved rapidly. I'm a fan of functional programming and its potential for safety, predictability & concurrency.

I contribute to open source and have founded multiple industry groups in Brisbane.

Linkedin:

https://www.linkedin.com/in/ashleydavis75/

Market Wizard:

https://www.market-wizard.com.au/

Data Forge:

http://www.data-forge-js.com/

Web

www.codecapers.com.au

Meetups

www.meetup.com/Game-Technology-Brisbane
www.meetup.com/Game-development-Brisbane
www.meetup.com/brisbane-unity-developers

Open source

https://github.com/codecapers
https://github.com/Real-Serious-Games
https://github.com/data-forge

Blogs

www.what-could-possibly-go-wrong.com
www.the-data-wrangler.com

Skills

Management of development teams & projects
Coaching developers
Making sense of technology for senior management
Developing technical strategies
Data wrangling & visualization.
Desktop, cloud/web & mobile apps.
Game dev, serious games, simulations & VR experiences.

You may also be interested in...

Permalink | Advertise | Privacy | Terms of Use | Mobile
Web01 | 2.8.180111.1 | Last Updated 10 Oct 2011
Article Copyright 2011 by Ashley Davis
Everything else Copyright © CodeProject, 1999-2018
Layout: fixed | fluid