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BSEtunes

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24 Apr 2010CPOL4 min read 64.2K   4.3K   58  
BSEtunes is a MySQL based, full manageable, networkable single or multiuser jukebox application
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Diagnostics;
using System.Collections.ObjectModel;
using System.IO;
using BSE.CoverFlow.WPFLib.Properties;
using System.Windows.Media.Media3D;
using System.Windows.Threading;
using System.Windows.Resources;
using BSE.Platten.Audio;
using BSE.Platten.BO;
using System.Globalization;

namespace BSE.CoverFlow.WPFLib
{
    /// <summary>
    /// Interaction logic for CoverFlow.xaml
    /// </summary>
    public partial class CoverFlowItem : UserControl
    {
        #region Delegates
        /// <summary>
        /// Occurs when the close button on coverflow is clicked. 
        /// </summary>
        public event EventHandler<EventArgs> CloseClick;
        private delegate void ViewStatePlayerPlaysHandler(PlayMode eMode);
        private delegate void ViewStatePlayerPausedHandler(PlayMode eMode);
        private delegate void ViewStatePlayerStoppedHandler(PlayMode eMode);
        private delegate void ViewStatePlayerTrackChangedHandler(PlayMode eMode);
        #endregion

        #region Constants
        #endregion

        #region FieldsPrivate
        private List<CoverItem> m_listCoverFlowItems;
        private Collection<int> m_coverFlowCollection;
        private Queue<CoverItem> m_removeableCoverFlowItems = new Queue<CoverItem>();
        private Queue<CTrack> m_tracksToSelect = new Queue<CTrack>();
        //private int m_iVisibleCoversPerSide = 6;
        private int m_iVisibleCoversPerSide = 4;
        private ImageSource m_defaultImageSource;
        private int m_iStartPosition;
        private bool m_bDisableMouseHitTesting;
        private CoverItem m_currentCoverItem;
        private ImageSource m_imageSourceBtnPreviousEnabled;
        private ImageSource m_imageSourceBtnPreviousDisabled;
        private ImageSource m_imageSourceBtnNextEnabled;
        private ImageSource m_imageSourceBtnNextDisabled;
        private ImageSource m_imageSourceBtnPlay;
        private ImageSource m_imageSourceBtnPause;
        private MeshGeometry3D m_meshGeometry;
        private MeshGeometry3D m_meshGeometryMirror;
        private BSE.Platten.Audio.CPlayerManager m_playerManager;

        #endregion

        #region Properties
        //Gets or sets the connection string to the database
        public string ConnectionString
        {
            get;
            set;
        }
        /// <summary>
        /// Sets the CPlayerManager
        /// </summary>
        public CPlayerManager PlayerManager
        {
            private get { return this.m_playerManager; }
            set
            {
                this.m_playerManager = value;
                if (this.m_playerManager != null)
                {
                    this.m_playerManager.PlayerManagerTrackChanged += new EventHandler<PlayerManagerStatusChangedEventArgs>(PlayerManagerTrackChanged);
                    this.m_playerManager.PlayerManagerSongFinished += new EventHandler<PlayerManagerStatusChangedEventArgs>(PlayerManagerSongFinished);
                    this.m_playerManager.PlayerManagerPlays += new EventHandler<PlayerManagerStatusChangedEventArgs>(PlayerManagerPlays);
                    this.m_playerManager.PlayerManagerPaused += new EventHandler<PlayerManagerStatusChangedEventArgs>(PlayerManagerPaused);
                }
            }
        }
        private MeshGeometry3D MeshGeometry
        {
            get
            {
                if (this.m_meshGeometry == null)
                {
                    this.m_meshGeometry = this.FindResource("meshGeometry") as MeshGeometry3D;
                }
                return this.m_meshGeometry;
            }
        }
        private MeshGeometry3D MeshGeometryMirror
        {
            get
            {
                if (this.m_meshGeometryMirror == null)
                {
                    this.m_meshGeometryMirror = this.FindResource("meshGeometryMirror") as MeshGeometry3D;
                }
                return this.m_meshGeometryMirror;
            }
        }
        private ImageSource DefaultImageSource
        {
            get
            {
                if (this.m_defaultImageSource == null)
                {
                    System.Windows.Controls.Image image = this.FindResource("m_imgDefault") as System.Windows.Controls.Image;
                    this.m_defaultImageSource = image.Source;
                }
                return this.m_defaultImageSource;
            }
        }
        /// <summary>
        /// Gets or sets the <see cref="PlayMode"/> in which the player plays.
        /// </summary>
        internal BSE.Platten.Audio.PlayMode PlayMode
        {
            get;
            set;
        }
        /// <summary>
        /// Gets the PlayState enumeration type defines the possible operational states of the PlayerManager
        /// as it plays a digital media file.
        /// </summary>
        internal BSE.Platten.Audio.PlayState PlayState
        {
            get
            {
                if (this.m_playerManager != null)
                {
                    return this.m_playerManager.PlayState;
                }
                return PlayState.Undefined;
            }
        }
        #endregion

        #region MethodsPublic
        public CoverFlowItem()
        {
            string strAssemblyName = GetAssemblyName();
            this.m_imageSourceBtnNextEnabled = GetBitmapFromResource(
                string.Format(CultureInfo.InvariantCulture, "/{0}{1}", strAssemblyName, Constants.ImageSourceBtnNextEnabled));
            this.m_imageSourceBtnNextDisabled = GetBitmapFromResource(
                string.Format(CultureInfo.InvariantCulture, "/{0}{1}", strAssemblyName, Constants.ImageSourceBtnNextDisabled));
            this.m_imageSourceBtnPreviousEnabled = GetBitmapFromResource(
                string.Format(CultureInfo.InvariantCulture, "/{0}{1}", strAssemblyName, Constants.ImageSourceBtnPreviousEnabled));
            this.m_imageSourceBtnPreviousDisabled = GetBitmapFromResource(
                string.Format(CultureInfo.InvariantCulture, "/{0}{1}", strAssemblyName, Constants.ImageSourceBtnPreviousDisabled));
            this.m_imageSourceBtnPlay = GetBitmapFromResource(
                string.Format(CultureInfo.InvariantCulture, "/{0}{1}", strAssemblyName, Constants.ImageSourceBtnPlay));
            this.m_imageSourceBtnPause = GetBitmapFromResource(
                string.Format(CultureInfo.InvariantCulture, "/{0}{1}", strAssemblyName, Constants.ImageSourceBtnPause));

            InitializeComponent();
            
            this.m_btnStop.IsEnabled = false;
            this.m_btnPrevious.IsEnabled = false;
            this.m_btnNext.IsEnabled = false;

            this.m_coverFlowCollection = new Collection<int>();
            this.m_listCoverFlowItems = new List<CoverItem>();
        }

        public void LoadCovers()
        {
            if (string.IsNullOrEmpty(this.ConnectionString) == false)
            {
                this.Dispatcher.BeginInvoke(
                                System.Windows.Threading.DispatcherPriority.Normal,
                                (System.Threading.ThreadStart)delegate()
                            {
                                string strCacheDirectory = GetCacheDirectory();
                                CreateCacheFolder(strCacheDirectory);

                                foreach (BSE.Platten.BO.CTrack track in this.m_playerManager.TrackCollection)
                                {
                                    int iAlbumId = track.TitelId;
                                    if (this.m_coverFlowCollection.Contains(iAlbumId) == false)
                                    {
                                        this.m_coverFlowCollection.Add(iAlbumId);
                                    }
                                }

                                this.m_iVisibleCoversPerSide = 6;
                                if (this.m_coverFlowCollection.Count < 11)
                                {
                                    this.m_iVisibleCoversPerSide = this.m_coverFlowCollection.Count / 2;
                                }

                                int num = 0;
                                int num2 = this.m_iStartPosition + this.m_iVisibleCoversPerSide;

                                foreach (int iAlbumId in this.m_coverFlowCollection)
                                {
                                    if (((num >= this.m_iStartPosition) && (num <= (this.m_iStartPosition + (this.m_iVisibleCoversPerSide * 2)))) && (num < this.m_coverFlowCollection.Count))
                                    {
                                        if (num < num2)
                                        {
                                            this.CreateCoverItem(((this.m_iVisibleCoversPerSide - num) - this.m_iStartPosition) * -1, iAlbumId);

                                        }
                                        else if (num > num2)
                                        {
                                            CreateCoverItem((num - this.m_iStartPosition) - this.m_iVisibleCoversPerSide, iAlbumId);
                                        }
                                        else
                                        {
                                            CreateCoverItem(0, iAlbumId);
                                        }
                                    }
                                    num++;
                                }

                                Comparison<CoverItem> comparison = new Comparison<CoverItem>(this.CoverItemComparer);
                                this.m_listCoverFlowItems.Sort(comparison);

                                foreach (CoverItem coverItem in this.m_listCoverFlowItems)
                                {
                                    if (coverItem.Position == 0)
                                    {
                                        this.m_currentCoverItem = coverItem;
                                    }
                                }
                                BSE.Platten.BO.CTrack currentTrack = this.m_playerManager.CurrentTrack;
                                this.m_btnPlay.DisplayState = DisplayState.Playing;
                                this.PlayMode = this.m_playerManager.PlayMode;
                                switch (this.PlayState)
                                {
                                    case PlayState.Playing:
                                        this.m_btnPlay.DisplayState = DisplayState.Paused;
                                        PlayerManagerPlays(
                                            this, new PlayerManagerStatusChangedEventArgs(this.PlayMode));
                                        break;
                                    case PlayState.Paused:
                                        PlayerManagerPaused(
                                            this, new PlayerManagerStatusChangedEventArgs(this.PlayMode));
                                        break;
                                }

                                if (currentTrack != null)
                                {
                                    //SelectCurrentCover(currentTrack);
                                    this.m_tracksToSelect.Enqueue(currentTrack);
                                }

                                while (this.m_tracksToSelect.Count > 0)
                                {
                                    while (this.m_bDisableMouseHitTesting == true) ;
                                    CTrack dequeuedTrack = this.m_tracksToSelect.Dequeue();
                                    SelectCurrentCover(dequeuedTrack);
                                }
                            });
            }
        }
        /// <summary>
        /// Gets the name of the Coverflow assembly.
        /// </summary>
        /// <returns>the name of the Coverflow assembly as string</returns>
        public static string GetAssemblyName()
        {
            System.Reflection.Assembly assembly = System.Reflection.Assembly.GetExecutingAssembly();
            return assembly.GetName().Name;
        }
        /// <summary>
        /// Gets the name for the Coverflow cache directory
        /// </summary>
        /// <returns>The name for the Coverflow cache as string</returns>
        public static string GetCacheDirectory()
        {
            string strCacheDirectory = null;
            string strAssemblyName = GetAssemblyName();
            if (string.IsNullOrEmpty(strAssemblyName) == false)
            {
                string strApplicationDataPath = System.IO.Path.Combine(
                System.Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
                Constants.ApplicationBaseDataDirectoryName);

                strCacheDirectory = System.IO.Path.Combine(strApplicationDataPath, strAssemblyName);
            }
            return strCacheDirectory;
        }
        /// <summary>
        /// Clears the Coverflow cache directory
        /// </summary>
        public static void ClearCoverFlowCache()
        {
            string strCacheDirectory = GetCacheDirectory();
            if (string.IsNullOrEmpty(strCacheDirectory) == false)
            {
                DirectoryInfo directoryInfo = new DirectoryInfo(strCacheDirectory);
                if (directoryInfo.Exists == true)
                {
                    directoryInfo.Delete(true);
                }
            }
        }

        #endregion

        #region MethodsProtected
        #endregion

        #region MethodsPrivate

        private void ViewPort3DMouseDown(object sender, MouseButtonEventArgs e)
        {
            //CoverItem selectedCoverItem = null;
            //Point positionPoint = e.GetPosition(this.m_viewPort3D);
            //var rayMeshGeometry3DHitTestResult = VisualTreeHelper.HitTest(this.m_viewPort3D, positionPoint) as RayMeshGeometry3DHitTestResult;
            //if (rayMeshGeometry3DHitTestResult != null)
            //{
            //    int iPosition = 0;

            //    foreach (Visual3D visual3D in this.m_visualModel.Children)
            //    {
            //        CoverItem coverItem = visual3D as CoverItem;
            //        if (coverItem != null)
            //        {
            //            if (coverItem.Matches(rayMeshGeometry3DHitTestResult.MeshHit) == true)
            //            {
            //                selectedCoverItem = coverItem;
            //                break;
            //            }
            //        }
            //    }

            //    if ((selectedCoverItem != null) && (this.m_bDisableMouseHitTesting == false))
            //    {
            //        this.m_bDisableMouseHitTesting = true;
            //        DispatcherTimer selectCoverTimer = new DispatcherTimer();
            //        selectCoverTimer.Tick += new EventHandler(this.SelectCoverTimerTick);
            //        selectCoverTimer.Tag = selectedCoverItem.Position;
            //        if (Math.Abs(iPosition) > 1)
            //        {
            //            selectCoverTimer.Interval = new TimeSpan(0, 0, 0, 0, 500);
            //        }
            //        else
            //        {
            //            selectCoverTimer.Interval = new TimeSpan(0, 0, 0, 0, 0);
            //        }
            //        selectCoverTimer.Start();
            //    }
            //}
        }

        private void SelectCoverTimerTick(object sender, EventArgs e)
        {
            DispatcherTimer dispatcherTimer = sender as DispatcherTimer;
            int iPosition = (int)dispatcherTimer.Tag;
            if (iPosition < 0)
            {
                this.MoveLeft();
                iPosition++;
            }
            else if (iPosition > 0)
            {
                this.MoveRight();
                iPosition--;
            }
            dispatcherTimer.Tag = iPosition;
            if (iPosition == 0)
            {
                dispatcherTimer.Stop();
                dispatcherTimer = null;
                foreach (CoverItem coverItem in this.m_listCoverFlowItems)
                {
                    if (coverItem.Position == 0)
                    {
                        this.m_currentCoverItem = coverItem;
                        break;
                    }
                }
                this.m_bDisableMouseHitTesting = false;
            }
        }

        private void MoveLeft()
        {
            CleanUpOldItems();

            int iIndex = 0;
            int iNewAlbimId = -1;
            
            foreach (int iAlbumId in this.m_coverFlowCollection)
            {
                if (iIndex == (this.m_iStartPosition - 1))
                {
                    iNewAlbimId = iAlbumId;
                    break;
                }
                iIndex++;
            }

            CoverItem coverItemToRemove = null;
            if (this.m_listCoverFlowItems.Count > 0)
            {
                coverItemToRemove = this.m_listCoverFlowItems[this.m_listCoverFlowItems.Count - 1];
            }
            
            if (iNewAlbimId != -1)
            {
                this.CreateCoverItem(-(this.m_iVisibleCoversPerSide + 1), iNewAlbimId);
            }

            if (coverItemToRemove != null)
            {
                if ((this.m_iStartPosition >= (this.m_iVisibleCoversPerSide * -2)) &&
                (coverItemToRemove.Position < -(this.m_iVisibleCoversPerSide - 1)) || (coverItemToRemove.Position > (this.m_iVisibleCoversPerSide - 1)))
                {
                    this.m_removeableCoverFlowItems.Enqueue(coverItemToRemove);
                }
            }
            double yRotation = 0.0;
            double offsetX = 0.0;
            double dOffsetZ = 0.0;
            foreach (CoverItem coverItem in this.m_listCoverFlowItems)
            {
                CoverItem.GetOffsetsFromPosition(coverItem.Position + 1, out yRotation, out offsetX, out dOffsetZ);
                //coverItem.Animate(yRotation, offsetX, dOffsetZ);
                coverItem.Position++;
            }
            this.m_iStartPosition--;
        }
        
        private void MoveRight()
        {
                CleanUpOldItems();

                int iIndex = 0;
                int iNewAlbumId = -1;

                foreach (int iAlbumId in this.m_coverFlowCollection)
                {
                    if (iIndex == (this.m_iStartPosition + (2 * this.m_iVisibleCoversPerSide) + 1))
                    {
                        iNewAlbumId = iAlbumId;
                        break;
                    }
                    iIndex++;
                }
                CoverItem coverItemToRemove = null;
                if (this.m_listCoverFlowItems.Count > 0)
                {
                    coverItemToRemove = this.m_listCoverFlowItems[0];
                }
                if (iNewAlbumId != -1)
                {
                    this.CreateCoverItem(this.m_iVisibleCoversPerSide + 1, iNewAlbumId);
                }

                if (coverItemToRemove != null)
                {
                    if ((coverItemToRemove.Position < -(this.m_iVisibleCoversPerSide - 1)) ||
                    (coverItemToRemove.Position > (this.m_iVisibleCoversPerSide - 1)))
                    {
                        this.m_removeableCoverFlowItems.Enqueue(coverItemToRemove);
                    }
                }

                //double yRotation = 0.0;
                //double offsetX = 0.0;
                //double dOffsetZ = 0.0;
                //foreach (CoverItem coverItem in this.m_listCoverFlowItems)
                //{
                //    CoverItem.GetOffsetsFromPosition(coverItem.Position - 1, out yRotation, out offsetX, out dOffsetZ);
                //    coverItem.Animate(yRotation, offsetX, dOffsetZ);
                //    coverItem.Position--;
                //}
                this.m_iStartPosition++;
        }

        private void CleanUpOldItems()
        {
            while (this.m_removeableCoverFlowItems.Count > 0)
            {
                using (CoverItem removedItem = this.m_removeableCoverFlowItems.Dequeue())
                {
                    if (removedItem != null)
                    {
                        this.m_listCoverFlowItems.Remove(removedItem);
                        //int index = this.m_visualModel.Children.IndexOf(removedItem);
                        //if (index > -1)
                        //{
                        //    this.m_visualModel.Children.RemoveAt(index);
                        //}
                    }
                }
            }
        }
        
        private CoverItem CreateCoverItem(int iPosition, int iAlbumId)
        {
            string strCacheDirectory = GetCacheDirectory();
            //CoverItem coverItem = new CoverItem(this.MeshGeometry, this.MeshGeometryMirror, this.mod , strCacheDirectory, this.DefaultImageSource, iAlbumId, iPosition, this.ConnectionString);
            //this.m_visualModel.Children.Add(coverItem);
            
            //if (iPosition < 0)
            //{
            //    this.m_listCoverFlowItems.Insert(0, coverItem);
            //    return coverItem;
            //}
            
            //this.m_listCoverFlowItems.Add(coverItem);
            return null;
        }

        private int CoverItemComparer(CoverItem item1, CoverItem item2)
        {
            if (item1.Position < item2.Position)
            {
                return -1;
            }
            if (item1.Position > item2.Position)
            {
                return 1;
            }
            return 0;
        }

        private static void CreateCacheFolder(string strCacheDirectoryName)
        {
            DirectoryInfo directoryInfo = new DirectoryInfo(strCacheDirectoryName);
            if (directoryInfo.Exists == false)
            {
                directoryInfo.Create();
            }
        }

        private static BitmapImage GetBitmapFromResource(string relativeUriString)
        {
            BitmapImage bitmapImage = null;
            // Get the image stream at the specified URI that
            // is relative to the application package root.
            Uri uri = new Uri(relativeUriString, UriKind.Relative);
            StreamResourceInfo streamResourceInfo = Application.GetResourceStream(uri);
            using (Stream stream = streamResourceInfo.Stream)
            {
                // Convert the stream to an Image object.
                bitmapImage = new BitmapImage();
                bitmapImage.BeginInit();
                bitmapImage.StreamSource = stream;
                bitmapImage.EndInit();
            }
            return bitmapImage;
        }

        private void PlayerManagerTrackChanged(object sender, PlayerManagerStatusChangedEventArgs e)
        {
            this.PlayMode = e.PlayMode;
            BSE.Platten.BO.CTrack currentTrack = e.CurrentTrack;
            SelectCurrentCover(currentTrack);
            Dispatcher.Invoke(
                new ViewStatePlayerTrackChangedHandler(ViewStatePlayerTrackChanged),
                e.PlayMode);
        }

        private void ViewStatePlayerTrackChanged(PlayMode eMode)
        {
            this.m_btnPlay.DisplayState = DisplayState.Playing;
            if (this.m_playerManager != null)
            {
                this.m_btnNext.IsEnabled = this.m_playerManager.IsNextTrackAvailable;
                this.m_btnPrevious.IsEnabled = this.m_playerManager.IsPreviousTrackAvailable;
            }
        }

        private void PlayerManagerSongFinished(object sender, PlayerManagerStatusChangedEventArgs e)
        {
        }

        private void PlayerManagerPlays(object sender, PlayerManagerStatusChangedEventArgs e)
        {
            Dispatcher.Invoke(
                new ViewStatePlayerPlaysHandler(ViewStatePlayerPlays),
                e.PlayMode);
        }
        
        private void ViewStatePlayerPlays(PlayMode eMode)
        {
            this.m_btnStop.IsEnabled = true;
            this.m_btnPlay.DisplayState = DisplayState.Playing;
            this.m_btnNext.IsEnabled = false;
            this.m_btnPrevious.IsEnabled = false;
            this.m_txtSong.Text = this.m_playerManager.GetSongTitle();

            switch (eMode)
            {
                case PlayMode.Playlist:
                case PlayMode.Random:
                    if (this.m_playerManager.IsNextTrackAvailable == true)
                    {
                        this.m_btnNext.IsEnabled = true;
                    }
                    if (this.m_playerManager.IsPreviousTrackAvailable == true)
                    {
                        this.m_btnPrevious.IsEnabled = true;
                    }
                        break;
            }
        }

        private void PlayerManagerPaused(object sender, PlayerManagerStatusChangedEventArgs e)
        {
            Dispatcher.Invoke(
                new ViewStatePlayerPausedHandler(ViewStatePlayerPaused),
                e.PlayMode);
        }

        private void ViewStatePlayerPaused(PlayMode eMode)
        {
            this.m_btnPlay.DisplayState = DisplayState.Paused;
        }

        private void SelectCurrentCover(BSE.Platten.BO.CTrack trackToSelect)
        {
            int iCurrentAlbumPosition = 0;
            int iCounter = 0;
            int iNewAlbumPosition = 0;

            int iNewAlbumId = trackToSelect.TitelId;
            if (iNewAlbumId != 0)
            {
                foreach (int iAlbumId in this.m_coverFlowCollection)
                {
                    if ((this.m_currentCoverItem != null) && (iAlbumId == this.m_currentCoverItem.AlbumId))
                    {
                        iCurrentAlbumPosition = iCounter;
                    }
                    if (iAlbumId == iNewAlbumId)
                    {
                        iNewAlbumPosition = iCounter;
                    }
                    iCounter++;
                }

                int iPosition = 0;
                {
                    iPosition = iNewAlbumPosition - iCurrentAlbumPosition;
                }

                this.m_bDisableMouseHitTesting = true;
                DispatcherTimer selectCoverItemTimer = new DispatcherTimer();
                selectCoverItemTimer.Tick += new EventHandler(this.SelectCoverTimerTick);
                selectCoverItemTimer.Tag = iPosition;
                if (Math.Abs(iPosition) > 1)
                {
                    selectCoverItemTimer.Interval = new TimeSpan(0, 0, 0, 0, 200);
                }
                else
                {
                    selectCoverItemTimer.Interval = new TimeSpan(0, 0, 0, 0, 0);
                }
                selectCoverItemTimer.Start();

            }
        }

        private void BtnPreviousIsEnabledChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            if (this.m_imgPrevious != null)
            {
                if (e.NewValue is bool)
                {
                    bool bIsEnabled = (bool)e.NewValue;
                    if (bIsEnabled == true)
                    {
                        this.m_imgPrevious.Source = this.m_imageSourceBtnPreviousEnabled;
                    }
                    else
                    {
                        this.m_imgPrevious.Source = this.m_imageSourceBtnPreviousDisabled;
                    }
                }
            }
        }

        private void BtnNextIsEnabledChanged(object sender, DependencyPropertyChangedEventArgs e)
        {
            if (this.m_imgNext != null)
            {
                if (e.NewValue is bool)
                {
                    bool bIsEnabled = (bool)e.NewValue;
                    if (bIsEnabled == true)
                    {
                        this.m_imgNext.Source = this.m_imageSourceBtnNextEnabled;
                    }
                    else
                    {
                        this.m_imgNext.Source = this.m_imageSourceBtnNextDisabled;
                    }
                }
            }
        }
        private void BtnCloseClick(object sender, RoutedEventArgs e)
        {
            if (this.CloseClick != null)
            {
                this.CloseClick(sender, EventArgs.Empty);
            }
        }
        private void BtnNextClick(object sender, RoutedEventArgs e)
        {
            if (this.m_playerManager.IsNextTrackAvailable == true)
            {
                this.m_playerManager.PlayNextTrack(PlayMode.Random);
            }
        }
        private void BtnPreviousClick(object sender, RoutedEventArgs e)
        {
            if (this.m_playerManager.IsPreviousTrackAvailable == true)
            {
                this.m_playerManager.PlayPreviousTrack(PlayMode.Random);
            }
        }
        private void BtnStopClick(object sender, RoutedEventArgs e)
        {
            if (this.m_playerManager != null)
            {
                this.m_playerManager.Stop();
            }
            if (this.CloseClick != null)
            {
                this.CloseClick(sender, EventArgs.Empty);
            }
        }
        
        private void BtnPlayClick(object sender, RoutedEventArgs e)
        {
            if (this.m_playerManager != null)
            {
                switch (this.m_btnPlay.DisplayState)
                {
                    case DisplayState.Paused:
                        this.m_playerManager.Play();
                        break;
                    case DisplayState.Playing:
                        this.m_playerManager.Pause();
                        break;
                }
            }
        }
        
        private void BtnPlayDisplayStateChanged(object sender, RoutedEventArgs e)
        {
            this.m_imgPlay.Source = this.m_imageSourceBtnPlay;
            if (this.m_btnPlay.DisplayState == DisplayState.Playing)
            {
                this.m_imgPlay.Source = this.m_imageSourceBtnPause;
            }
        }
        private void UserControl_PreviewKeyDown(object sender, KeyEventArgs e)
        {
            Key key = e.Key;
            switch (key)
            {
                case Key.Escape:
                    this.BtnCloseClick(this, new RoutedEventArgs());
                    break;
                case Key.MediaNextTrack:
                    this.BtnNextClick(this, new RoutedEventArgs());
                    break;
                case Key.MediaPreviousTrack:
                    this.BtnPreviousClick(this, new RoutedEventArgs());
                    break;
                case Key.MediaPlayPause:
                    this.BtnPlayClick(this, new RoutedEventArgs());
                    break;
                case Key.MediaStop:
                    this.BtnStopClick(this, new RoutedEventArgs());
                    break;
                case Key.Play:
                    this.BtnPlayClick(this, new RoutedEventArgs());
                    break;
            }
        }
        private void UserControl_Unloaded(object sender, RoutedEventArgs e)
        {
            if (this.m_playerManager != null)
            {
                this.m_playerManager.PlayerManagerTrackChanged -= new EventHandler<PlayerManagerStatusChangedEventArgs>(PlayerManagerTrackChanged);
                this.m_playerManager.PlayerManagerSongFinished -= new EventHandler<PlayerManagerStatusChangedEventArgs>(PlayerManagerSongFinished);
                this.m_playerManager.PlayerManagerPlays -= new EventHandler<PlayerManagerStatusChangedEventArgs>(PlayerManagerPlays);
                this.m_playerManager.PlayerManagerPaused -= new EventHandler<PlayerManagerStatusChangedEventArgs>(PlayerManagerPaused);
            }
            if (this.m_viewPort3D != null)
            {
                Queue<CoverItem> coverItemsToRemove = new Queue<CoverItem>();
                foreach (CoverItem coverItem in this.m_listCoverFlowItems)
                {
                    coverItemsToRemove.Enqueue(coverItem);
                }

                while (coverItemsToRemove.Count > 0)
                {
                    CoverItem coverItemToRemove = null;
                    using (coverItemToRemove = coverItemsToRemove.Dequeue())
                    {
                        if (coverItemToRemove != null)
                        {
                            this.m_listCoverFlowItems.Remove(coverItemToRemove);
                            //this.m_visualModel.Children.Remove(coverItemToRemove);
                        }
                    }

                    if (coverItemToRemove != null)
                    {
                        coverItemToRemove = null;
                    }
                }
            }
        }
        #endregion
    }
}

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