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AvalonDock and MVVM

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

namespace SampleApp.ViewModels
{
    /// <summary>
    /// View-model for a pane that shows a list of open documents.
    /// </summary>
    public class OpenDocumentsPaneViewModel : AbstractPaneViewModel
    {
        public OpenDocumentsPaneViewModel(MainWindowViewModel mainWindowViewModel)
        {
            if (mainWindowViewModel == null)
            {
                throw new ArgumentNullException("mainWindowViewModel");
            }

            this.MainWindowViewModel = mainWindowViewModel;
            this.MainWindowViewModel.ActiveDocumentChanged += new EventHandler<EventArgs>(MainWindowViewModel_ActiveDocumentChanged);
        }

        /// <summary>
        /// View-models for documents.
        /// </summary>
        public ObservableCollection<TextFileDocumentViewModel> Documents
        {
            get
            {
                return this.MainWindowViewModel.Documents;
            }
        }

        /// <summary>
        /// View-model for the active document.
        /// </summary>
        public TextFileDocumentViewModel ActiveDocument
        {
            get
            {
                return this.MainWindowViewModel.ActiveDocument;
            }
            set
            {
                this.MainWindowViewModel.ActiveDocument = value;
            }
        }

        /// <summary>
        /// Close the currently selected document.
        /// </summary>
        public void CloseSelected()
        {
            var activeDocument = this.MainWindowViewModel.ActiveDocument;
            if (activeDocument != null)
            {
                this.MainWindowViewModel.Documents.Remove(activeDocument);
            }
        }

        /// <summary>
        /// Reference to the main window's view model.
        /// </summary>
        private MainWindowViewModel MainWindowViewModel
        {
            get;
            set;
        }

        /// <summary>
        /// Event raised when the active document in the main window has changed.
        /// </summary>
        private void MainWindowViewModel_ActiveDocumentChanged(object sender, EventArgs e)
        {
            OnPropertyChanged("ActiveDocument");
        }
    }
}

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

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About the Author

Ashley Davis
Software Developer (Senior)
Australia Australia
Ash is professional software developer living in Brisbane Australia. After many years in game development (and a few in finance) he is now a developer of serious games and simulations.
 
He is also a hobby developer when he can conjure the time.
 
Ash organizes a group in Brisbane called Game Technology Brisbane.
 
http://www.meetup.com/Game-Technology-Brisbane/
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