Synnefo » Pithos MS Client

using System;

using System.Collections.Generic;

using System.ComponentModel.Composition;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using Caliburn.Micro;

using Pithos.Network;

namespace Pithos.OFM

{

    [Export]

    public class CloudFilesViewModel:Screen

    {

        public bool IsCloudBusy

        {

            get { return _isCloudBusy; }

            set

            {

                if (value.Equals(_isCloudBusy)) return;

                _isCloudBusy = value;

                NotifyOfPropertyChange(() => IsCloudBusy);

            }

        }

        public bool IsCloudSelected

        {

            get { return _isCloudSelected; }

            set

            {

                if (value.Equals(_isCloudSelected)) return;

                _isCloudSelected = value;

                NotifyOfPropertyChange(() => IsCloudSelected);

            }

        }

        private ObjectRecord _selectedCloudFile;

        public ObjectRecord SelectedCloudFile

        {

            get { return _selectedCloudFile; }

            set

            {

                if (Equals(value, _selectedCloudFile)) return;

                _selectedCloudFile = value;

                NotifyOfPropertyChange(() => SelectedCloudFile);

                NotifyOfPropertyChange(() => CanDownload);

                IsCloudSelected = true;

            }

        }

        public bool CanDownload { get { return SelectedCloudFile != null; } }

        public void SelectCloudFile(RoutedPropertyChangedEventArgs<object> file)

        {

            SelectedCloudFile = (ObjectRecord)file.NewValue;

        }

        public async Task LoadCloudFiles(string accountName, string apiKey, string serverUrl)

        {

            await TaskEx.Yield();

            IsCloudBusy = true;

            CloudBusyMessage = "Checking Pithos ...";

            var client = new CloudFilesClient(accountName, apiKey) { AuthenticationUrl = serverUrl, UsePithos = true };

            await client.Authenticate().ConfigureAwait(false);

            var containerInfos = await client.ListContainers(accountName).ConfigureAwait(false);

            var infos = from container in containerInfos

                        from info in client.ListObjects(accountName, container.Name)

                        select info;

            //Force enumeration here to get all items. Otherwise we get only the containers

            //and the objects will be retrieved by the UI thread during binding

            var rootItem = new ObjectRecord()

            {

                DisplayName = accountName,

                Directories = infos.ToTree()

            };

            CloudInfos = rootItem;

            IsCloudBusy = false;

        }

        public string CloudBusyMessage

        {

            get { return _cloudBusyMessage; }

            set

            {

                if (value == _cloudBusyMessage) return;

                _cloudBusyMessage = value;

                NotifyOfPropertyChange(() => CloudBusyMessage);

            }

        }

        public IEnumerable<ObjectRecord> CloudInfos

        {

            get { return _cloudInfos; }

            set

            {

                if (Equals(value, _cloudInfos)) return;

                _cloudInfos = value;

                NotifyOfPropertyChange(() => CloudInfos);

            }

        }

        private IEnumerable<ObjectRecord> _cloudInfos;

        private bool _isCloudBusy;

        private string _cloudBusyMessage;

        private bool _isCloudSelected;

    }

}