/**

 * ViewDetails.cs

 * 

 * A modified ListView that looks extremely sexy.

 * 

 * Features:

 *    Drag-n-Drop

 *    Column sort

 *    Column toggle

 *    Icons

 *    Strikethrough

 *    Active items (graphical highlight)

 *    Explorer-like look

 *    

 * It also sports a convenient storage structure used to

 * import and export of the configuration in order to allow 

 * easy saving of the configuration between different sessions.

 * 

 * * * * * * * * *

 * 

 * This code is part of the Stoffi Music Player Project.

 * Visit our website at: stoffiplayer.com

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 3 of the License, or (at your option) any later version.

 * 

 * See stoffiplayer.com/license for more information.

 **/



using System;

using System.Collections;

using System.Collections.Generic;

using System.Collections.Specialized;

using System.Collections.ObjectModel;

using System.ComponentModel;

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.Windows.Threading;

using System.IO;



namespace Stoffi

{

	/// <summary>

	/// A modified ListView that looks extremely sexy.

	/// 

	/// Features:

	///     Drag-n-Drop

	///     Column sort

	///     Column toggle

	///     Icons

	///     Strikethrough

	///     Active items (graphical highlight)

	///     Explorer-like look

	///     

	/// It also sports a convenient storage structure used to

	/// import and export of the configuration in order to allow 

	/// easy saving of the configuration between different sessions.

	/// </summary>

	public partial class ViewDetails : ListView

	{

		#region Members



		private ContextMenu headerMenu = new ContextMenu();

		private ContextMenu itemMenu = new ContextMenu();

		private Hashtable columns = new Hashtable();

		private Hashtable columnTable = new Hashtable();

		private Hashtable headerMenuTable = new Hashtable();

		private GridView columnGrid = new GridView();

		private GridViewColumnHeader currentSortColumn = null;

		private ListSortDirection currentSortDirection = ListSortDirection.Ascending;

		private ViewDetailsDropTarget dropTarget;

		private ViewDetailsColumn numberColumn = new ViewDetailsColumn();

		private double lastScroll = 0;

		private bool hasNumber = false;

		private bool isNumberVisible = false;

		private int numberIndex = 0;

		private bool lockSortOnNumber = false;

		private ViewDetailsConfig config = null;

		private string filter = "";

		private int focusItemIndex = -1;

		private bool useAeroHeaders = true;



		#endregion Members



		#region Properties



		/// <summary>

		/// Gets or sets whether the list can be sorted by clicking.

		/// </summary>

		public bool IsClickSortable { get; set; }



		/// <summary>

		/// Gets or sets whether the list can be sorted by dragging.

		/// Will be ignored if LockSortOnNumber is turned on.

		/// </summary>

		public bool IsDragSortable { get; set; }



		/// <summary>

		/// Gets or sets whether files can be dropped onto the list.

		/// </summary>

		public bool AcceptFileDrops { get; set; }



		/// <summary>

		/// Gets or sets whether to use icons or not (requires an Icon property on the sources).

		/// </summary>

		public bool UseIcons { get; set; }

		

		/// <summary>

		/// Gets or sets whether the number column is visible (requires the HasNumber property).

		/// </summary>

		public bool IsNumberVisible

		{

			get { return isNumberVisible; }

			set

			{

				if (HasNumber)

				{

					ToggleColumn("#", value);

					isNumberVisible = value;

					if (config != null)

					{

						config.IsNumberVisible = value;

						config.NumberColumn.IsVisible = value;

					}

				}

			}

		}



		/// <summary>

		/// Gets or sets the position of the number column.

		/// </summary>

		public int NumberIndex

		{

			get { return numberIndex; }

			set

			{

				if (HasNumber && numberIndex >= 0)

				{

					GridViewColumn gvc = columnGrid.Columns[numberIndex];

					columnGrid.Columns.RemoveAt(numberIndex);

					MenuItem mi = (MenuItem)headerMenu.Items[numberIndex];

					headerMenu.Items.RemoveAt(numberIndex);



					if (value >= 0)

					{

						headerMenu.Items.Insert(value, mi);

						columnGrid.Columns.Insert(value, gvc);

					}

				}

				numberIndex = value;

				if (config != null)

					config.NumberIndex = value;

			}

		}



		/// <summary>

		/// Gets or sets whether to use a number column (requires a Number property on the sources).

		/// </summary>

		public bool HasNumber

		{

			get { return hasNumber; }

			set

			{

				numberColumn.IsVisible = value;

				numberColumn.IsAlwaysVisible = value && lockSortOnNumber;

				hasNumber = value;

				if (value)

					AddColumn(numberColumn, NumberIndex, false);

				else

					RemoveColumn(numberColumn, false);



				if (config != null)

				{

					config.HasNumber = value;

					config.NumberColumn.IsVisible = value;

					config.NumberColumn.IsAlwaysVisible = value && lockSortOnNumber;

				}

			}

		}



		/// <summary>

		/// Gets or sets whether to only allow sorting on the number column.

		/// Requires HasNumber and IsClickSortable.

		/// </summary>

		public bool LockSortOnNumber

		{

			get { return lockSortOnNumber; }

			set

			{

				numberColumn.IsAlwaysVisible = value && hasNumber;

				lockSortOnNumber = value;

				if (value)

				{

					if (Items.SortDescriptions.Count > 0)

						Items.SortDescriptions.Clear();

					Sort(numberColumn, ListSortDirection.Ascending);

				}

				if (config != null)

					config.LockSortOnNumber = value;

			}

		}



		/// <summary>

		/// Gets or sets the configuration of the ViewDetails class.

		/// This will erase all current configuration.

		/// </summary>

		public ViewDetailsConfig Config

		{

			get { return config; }

			set

			{

				if (value != null)

				{

					// clear current columns

					columns.Clear();

					columnGrid.Columns.Clear();

					columnTable.Clear();

					headerMenuTable.Clear();

					headerMenu.Items.Clear();



					// copy configuration

					numberColumn = value.NumberColumn;

					IsClickSortable = value.IsClickSortable;

					IsDragSortable = value.IsDragSortable;

					UseIcons = value.UseIcons;

					Filter = value.Filter;

					AcceptFileDrops = value.AcceptFileDrops;

					SelectIndices(value.SelectedIndices);



					value.Columns.CollectionChanged += new NotifyCollectionChangedEventHandler(Columns_CollectionChanged);



					// add columns

					foreach (ViewDetailsColumn vdc in value.Columns)

						AddColumn(vdc, -1, false);



					NumberIndex = value.NumberIndex;

					HasNumber = value.HasNumber;

					IsNumberVisible = value.IsNumberVisible;

					LockSortOnNumber = value.LockSortOnNumber;



					// apply sorting

					if (value.Sorts != null)

					{

						foreach (string sort in value.Sorts)

						{

							ListSortDirection dir = sort.Substring(0, 3) == "asc" ? ListSortDirection.Ascending : ListSortDirection.Descending;

							string name = sort.Substring(4);

							if (name == "Number") name = "#";

							Sort(columns[name] as ViewDetailsColumn, dir);

						}

					}



					config = value;

					config.PropertyChanged += new PropertyChangedEventHandler(Config_PropertyChanged);

				}

			}

		}



		/// <summary>

		/// Sets the method that will be used to determine whether a specific item matches

		/// a specific string or not.

		/// </summary>

		public ViewDetailsSearchDelegate FilterMatch { get; set; }



		/// <summary>

		/// Gets or sets the string that is used to filter items.

		/// </summary>

		public string Filter

		{

			get { return filter; }

			set

			{

				filter = value;



				if (value == "")

					Items.Filter = null;



				else if (FilterMatch != null)

				{

					Items.Filter = delegate(object item)

					{

						return FilterMatch((ViewDetailsItemData)item, value);

					};

				}



				if (config != null && config.Filter != value)

					config.Filter = value;

			}

		}



		/// <summary>

		/// Gets or sets whether or not to use Aero styled headers

		/// </summary>

		public bool UseAeroHeaders

		{

			get { return useAeroHeaders; }

			set

			{

				useAeroHeaders = value;

				columnGrid.ColumnHeaderContainerStyle = value ? (Style)FindResource("AeroHeaderStyle") : null;

			}

		}



		#endregion PropertiesWindow



		#region Constructor



		/// <summary>

		/// Creates an instance of the ViewDetails class.

		/// </summary>

		public ViewDetails()

		{

			U.L(LogLevel.Debug, "VIEW DETAILS", "Initialize");

			InitializeComponent();

			U.L(LogLevel.Debug, "VIEW DETAILS", "Initialized");



			// create column headers

			UseAeroHeaders = System.Windows.Forms.VisualStyles.VisualStyleInformation.DisplayName != "";

			columnGrid.ColumnHeaderContextMenu = headerMenu;

			View = columnGrid;



			numberColumn.Alignment = System.Windows.HorizontalAlignment.Right;

			numberColumn.Binding = "Number";

			numberColumn.IsVisible = false;

			numberColumn.SortField = "Number";

			numberColumn.Text = "#";

			numberColumn.Name = "#";

			numberColumn.Width = 60;

			numberColumn.IsSortable = true;



			IsClickSortable = true;

			IsDragSortable = true;

			AllowDrop = true;

			UseIcons = true;

			HasNumber = false;

			LockSortOnNumber = false;

			FilterMatch = null;

			AcceptFileDrops = true;



			columnGrid.Columns.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler(Columns_CollectionChanged);



			if (System.Windows.Forms.VisualStyles.VisualStyleInformation.DisplayName != "")

				ItemContainerStyle = (Style)TryFindResource("AeroRowStyle");

			else

				ItemContainerStyle = (Style)TryFindResource("ClassicRowStyle");

		}



		#endregion Constructor



		#region Methods



		#region Public



		/// <summary>

		/// Adds a column to the list

		/// </summary>

		/// <param name="column">The column to be added</param>

		/// <param name="index">The index to insert at (-1 means last)</param>

		/// <param name="addToConfig">Whether the column should be added to the config</param>

		public void AddColumn(ViewDetailsColumn column, int index = -1, bool addToConfig = true)

		{

			// create header

			GridViewColumnHeader gvch = new GridViewColumnHeader();

			gvch.Tag = column.Binding;

			gvch.Content = column.Text;

			gvch.HorizontalAlignment = column.Alignment;

			gvch.Click += Column_Clicked;

			gvch.SizeChanged += Column_SizeChanged;

			gvch.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;



			if (System.Windows.Forms.VisualStyles.VisualStyleInformation.DisplayName != "")

			{

				gvch.SetResourceReference(GridViewColumnHeader.TemplateProperty, "AeroHeaderTemplate");

				gvch.ContentTemplate = (DataTemplate)FindResource("HeaderTemplate");

			}



			// create column

			GridViewColumn gvc = new GridViewColumn();

			gvc.Header = gvch;

			gvc.CellTemplate = CreateDataTemplate(column.Binding, column.Alignment, false, (UseIcons && columnGrid.Columns.Count == 0));

			gvc.Width = column.Width;



			// create header menu item

			MenuItem mi = new MenuItem();

			mi.Header = column.Text;

			mi.IsCheckable = !column.IsAlwaysVisible;

			mi.Click += new RoutedEventHandler(HeaderMenu_Click);

			mi.IsChecked = column.IsVisible;

			mi.Tag = column.Name;



			columns.Add(column.Name, column);

			columnTable.Add(column.Name, gvc);

			headerMenuTable.Add(column.Name, mi);



			if (index >= 0)

				headerMenu.Items.Insert(index, mi);

			else

				headerMenu.Items.Add(mi);



			if (column.IsVisible && index >= 0)

				columnGrid.Columns.Insert(index, gvc);

			else if (column.IsVisible)

				columnGrid.Columns.Add(gvc);



			if (config != null && addToConfig)

			{

				if (config.Columns == null)

					config.Columns = new ObservableCollection<ViewDetailsColumn>();

				config.Columns.Add(column);

			}



			RefreshHeaderMenu();



			column.PropertyChanged += new PropertyChangedEventHandler(ConfigColumn_PropertyChanged);

		}



		/// <summary>

		/// Adds a column to the list

		/// </summary>

		/// <param name="name">The name of the column</param>

		/// <param name="text">The text to be displayed</param>

		/// <param name="binding">The value to bind the column to</param>

		/// <param name="sortField">The value to sort on when clicked</param>

		/// <param name="width">The width of the column</param>

		/// <param name="isSortable">Whether the column is sortable</param>

		/// <param name="isAlwaysVisible">Whether the column is always visible</param>

		/// <param name="isVisible">Whether the column is visible (only effective if isAlwaysVisible is false)</param>

		public void AddColumn(string name, string text, string binding, string sortField, double width, bool isSortable = true, bool isAlwaysVisible = false, bool isVisible = true)

		{

			ViewDetailsColumn vdc = new ViewDetailsColumn();

			vdc.Name = name;

			vdc.Text = text;

			vdc.Binding = binding;

			vdc.SortField = sortField;

			vdc.IsAlwaysVisible = isAlwaysVisible;

			vdc.Width = width;

			vdc.IsVisible = (isVisible || isAlwaysVisible);

			vdc.IsSortable = isSortable;

			AddColumn(vdc);

		}



		/// <summary>

		/// Adds a column to the list

		/// </summary>

		/// <param name="name">The name of the column</param>

		/// <param name="text">The text to be displayed</param>

		/// <param name="binding">The value to bind the column to</param>

		/// <param name="width">The width of the column</param>

		/// <param name="isSortable">Whether the column is sortable</param>

		/// <param name="isAlwaysVisible">Whether the column is always visible</param>

		/// <param name="isVisible">Whether the column is visible (only effective if isAlwaysVisible is false)</param>

		public void AddColumn(string name, string text, string binding, double width, bool isSortable = true, bool isAlwaysVisible = false, bool isVisible = true)

		{

			AddColumn(name, text, binding, binding, width, isSortable, isAlwaysVisible, isVisible);

		}



		/// <summary>

		/// Removes a column from the list

		/// </summary>

		/// <param name="column">The column to remove</param>

		/// <param name="removeFromConfig">Whether the column should be removed from the config</param>

		public void RemoveColumn(ViewDetailsColumn column, bool removeFromConfig = true)

		{

			if (headerMenuTable.ContainsKey(column.Text))

			{

				MenuItem mi = (MenuItem)headerMenuTable[column.Text];

				headerMenu.Items.Remove(mi);

				headerMenuTable.Remove(column.Text);

			}



			if (columnTable.ContainsKey(column.Text))

			{

				GridViewColumn gvc = (GridViewColumn)columnTable[column.Text];

				columnGrid.Columns.Remove(gvc);

				columnTable.Remove(column.Text);

			}



			if (columns.ContainsKey(column.Text))

			{

				ViewDetailsColumn vdc = (ViewDetailsColumn)columns[column.Text];

				if (config != null && config.Columns != null && removeFromConfig)

					config.Columns.Remove(vdc);

				columns.Remove(column.Text);

			}

		}



		/// <summary>

		/// Selects a given list of indices of items

		/// </summary>

		/// <param name="indices">The indices of the items to select</param>

		public void SelectIndices(List<int> indices)

		{

			List<object> itemsToSelect = new List<object>();

			foreach (int index in indices)

				if (0 <= index && index < Items.Count)

					itemsToSelect.Add(Items[index]);

			SetSelectedItems(itemsToSelect);

			if (itemsToSelect.Count > 0)

				ScrollIntoView(itemsToSelect.First<object>());



		}



		/// <summary>

		/// Selects an item, gives it focus and scrolls it into view

		/// </summary>

		/// <param name="item">The item inside the list</param>

		public void SelectItem(ViewDetailsItemData item)

		{

			if (item == null)

				return;



			if (Items.Contains(item))

				SelectedItem = item;



			else

			{

				foreach (ViewDetailsItemData i in Items)

				{

					if (i == item)

					{

						SelectedItem = i;

						break;

					}

				}

			}



			focusItemIndex = SelectedIndex;

			ItemContainerGenerator.ItemsChanged += FocusItem; // in case we have to wait...

			FocusItem(null, null);

		}



		/// <summary>

		/// Removes the current sorting

		/// </summary>

		/// <param name="keepPositions">Whether or not to keep all items at their current position</param>

		public void ClearSort(bool keepPositions = false)

		{

			if (Items.SortDescriptions.Count > 0)

			{

				// move items in the source so they are in the same

				// order as the gui items (which are order by sort conditions)

				ObservableCollection<object> items = ItemsSource as ObservableCollection<object>;

				for (int j = 0; j < Items.Count; j++)

					DispatchMoveItem(Items[j], j);



				// remove sort indicators

				if (!LockSortOnNumber)

				{

					Items.SortDescriptions.Clear();

					config.Sorts.Clear();

					foreach (DictionaryEntry c in columnTable)

					{

						ViewDetailsColumn vdc = (ViewDetailsColumn)columns[c.Key];

						GridViewColumn gvc = (GridViewColumn)c.Value;

						gvc.CellTemplate = CreateDataTemplate(vdc.Binding, vdc.Alignment, false, (UseIcons && columnGrid.Columns.IndexOf(gvc) == 0));

						((GridViewColumnHeader)((GridViewColumn)c.Value).Header).ContentTemplate = (DataTemplate)FindResource("HeaderTemplate");

					}

					currentSortColumn = null;

					if (SelectedItems.Count > 0)

						ScrollIntoView(SelectedItems[0]);

				}

			}

		}



		/// <summary>

		/// Gets an item source at a given index in the graphical list

		/// </summary>

		/// <param name="index">The graphical index of the item</param>

		/// <returns>The item source</returns>

		public ViewDetailsItemData GetItemAt(int index)

		{

			return Items[index] as ViewDetailsItemData;

		}



		/// <summary>

		/// Returns the graphical index of an item source

		/// </summary>

		/// <param name="logicalObject">The item source</param>

		/// <returns>The graphical index of <paramref name="logicalObject"/></returns>

		public int IndexOf(ViewDetailsItemData logicalObject)

		{

			return Items.IndexOf(logicalObject);

		}



		/// <summary> 

		/// Request the focus to be set on the specified list view item 

		/// </summary> 

		/// <param name="itemIndex">index of item to receive the initial focus</param>

		public void FocusAndSelectItem(int itemIndex)

		{

			Dispatcher.BeginInvoke(new FocusAndSelectItemDelegate(TryFocusAndSelectItem),

				DispatcherPriority.ApplicationIdle, itemIndex);

		}



		/// <summary>

		/// Places focus on the list and the selected items in the list.

		/// </summary>

		public void Focus()

		{

			base.Focus();

			ListViewItem lvi = ItemContainerGenerator.ContainerFromIndex(SelectedIndex) as ListViewItem;

			if (lvi != null)

			{

				this.ScrollIntoView(lvi);

				lvi.IsSelected = true;

				Keyboard.ClearFocus();

				Keyboard.Focus(lvi);

			}

		}



		#endregion Public



		#region Private



		/// <summary> 

		/// Make sure a list view item is within the visible area of the list view 

		/// and then select and set focus to it. 

		/// </summary> 

		/// <param name="itemIndex">index of item</param> 

		private void TryFocusAndSelectItem(int itemIndex)

		{

			ListViewItem lvi = ItemContainerGenerator.ContainerFromIndex(itemIndex) as ListViewItem;

			if (lvi != null)

			{

				this.ScrollIntoView(lvi);

				lvi.IsSelected = true;

				Keyboard.ClearFocus();

				Keyboard.Focus(lvi);

			}

		}



		/// <summary>

		/// Toggles a columns visibility

		/// </summary>

		/// <param name="name">The name of the column</param>

		/// <param name="visible">Whether the column should be visible</param>

		private void ToggleColumn(string name, bool visible)

		{

			MenuItem item = headerMenuTable[name] as MenuItem;

			GridViewColumn column = columnTable[name] as GridViewColumn;

			ViewDetailsColumn vdc = columns[name] as ViewDetailsColumn;

			item.IsChecked = visible;

			if (visible)

			{

				// calculate the position to insert the column based on the position in the context menu

				int pos = 0;

				foreach (MenuItem mi in columnGrid.ColumnHeaderContextMenu.Items)

				{

					ViewDetailsColumn c = columns[mi.Tag] as ViewDetailsColumn;

					if (c == vdc)

						break;

					if (c.IsVisible) // only count visible columns

						pos++;

				}

				if (columnGrid.Columns.Contains(column))

					columnGrid.Columns.Remove(column);

				columnGrid.Columns.Insert(pos, column);

			}

			else

				columnGrid.Columns.Remove(column);



			int i = 0;

			foreach (GridViewColumn gvc in columnGrid.Columns)

			{

				string n = (string)((GridViewColumnHeader)gvc.Header).Content;

				ViewDetailsColumn col = FindColumn(n);

				gvc.CellTemplate = CreateDataTemplate(col.Binding, col.Alignment, (currentSortColumn == (GridViewColumnHeader)gvc.Header), i < 1);

				i++;

			}



			if (HasNumber)

			{

				numberIndex = columnGrid.Columns.IndexOf((GridViewColumn)columnTable["#"]);

				if (config != null)

					config.NumberIndex = numberIndex;

			}



			vdc.IsVisible = item.IsChecked;

			RefreshHeaderMenu();

		}



		/// <summary>

		/// Goes through all items in the header menu, if only

		/// one column is visible it is disabled, preventing

		/// the user from hiding all columns.

		/// </summary>

		private void RefreshHeaderMenu()

		{

			// look for a single visible column (if there is any)

			ViewDetailsColumn onlyVisible = numberColumn != null && numberColumn.IsVisible ? numberColumn : null;

			foreach (ViewDetailsColumn column in columns.Values)

				if (column.IsVisible && onlyVisible == null)

					onlyVisible = column;

				else if (column.IsVisible)

				{

					onlyVisible = null;

					break;

				}



			// by default allow any column to be toggled

			foreach (MenuItem mi in headerMenu.Items)

				mi.IsEnabled = true;



			// if there's only one single column visible we need

			// to disable the ability to hide it

			if (onlyVisible != null && headerMenuTable.ContainsKey(onlyVisible.Name))

			{

				MenuItem mi = headerMenuTable[onlyVisible.Name] as MenuItem;

				mi.IsEnabled = false;

			}

		}



		/// <summary>

		/// Gives an item focus and scrolls it into view

		/// </summary>

		/// <param name="sender">The sender of the event</param>

		/// <param name="e">The event data</param>

		private void FocusItem(object sender, EventArgs e)

		{

			if (ItemContainerGenerator.Status == System.Windows.Controls.Primitives.GeneratorStatus.ContainersGenerated)

			{

				ItemContainerGenerator.StatusChanged -= FocusItem;

				Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Input, new Action(delegate

				{

					if (focusItemIndex > Items.Count || focusItemIndex < 0) return;

					ScrollIntoView(Items.GetItemAt(focusItemIndex));

					ListBoxItem item = ItemContainerGenerator.ContainerFromIndex(focusItemIndex) as ListBoxItem;

					if (item != null)

					{

						item.Focus();

						focusItemIndex = -1;

					}

				}));

			}

		}



		/// <summary>

		/// Sorts the list

		/// </summary>

		/// <param name="vdc">The column to sort on</param>

		/// <param name="direction">The sort direction</param>

		private void Sort(ViewDetailsColumn vdc, ListSortDirection direction)

		{

			// try to find the corresponding column header

			GridViewColumn column = (GridViewColumn)columnTable[vdc.Name];

			GridViewColumnHeader header = (GridViewColumnHeader)column.Header;



			foreach (DictionaryEntry c in columnTable)

			{

				string key = c.Key as string;

				GridViewColumn gvc = c.Value as GridViewColumn;

				GridViewColumnHeader gvch = gvc.Header as GridViewColumnHeader;

				ViewDetailsColumn vdc_ = (ViewDetailsColumn)columns[key];

				bool active = (key == vdc.Name);

				bool rightMost = columnGrid.Columns.IndexOf(gvc) == 0;

				gvc.CellTemplate = CreateDataTemplate(vdc_.Binding, vdc_.Alignment, active, rightMost);

				string headerTemplate = "HeaderTemplate" + (active ? direction == ListSortDirection.Ascending ? "ArrowUp" : "ArrowDown" : "");

				if (System.Windows.Forms.VisualStyles.VisualStyleInformation.DisplayName != "")

					gvch.ContentTemplate = (DataTemplate)TryFindResource(headerTemplate);

			}



			// apply sorting

			Items.SortDescriptions.Insert(0, new SortDescription(vdc.SortField, direction));



			currentSortColumn = header;

			currentSortDirection = direction;



			if (SelectedItems.Count > 0)

				ScrollIntoView(SelectedItems[0]);

		}



		/// <summary>

		/// Uses certain parameters to create a DataTemplate which can be used as a CellTemplate for a

		/// specific column in the list.

		/// </summary>

		/// <param name="binding">The value to bind to</param>

		/// <param name="alignment">Horizontal alignment of the content</param>

		/// <param name="active">Whether the column is active or not</param>

		/// <param name="rightMost">Whether the column is the right most</param>

		/// <returns>DataTemplate to use as a CellTemplate for a column</returns>

		private DataTemplate CreateDataTemplate(string binding, HorizontalAlignment alignment, bool active, bool rightMost)

		{

			FrameworkElementFactory dp = new FrameworkElementFactory(typeof(DockPanel));

			dp.SetValue(DockPanel.LastChildFillProperty, true);





			if (rightMost && UseIcons)

			{

				double iconSize = 16.0;

				FrameworkElementFactory icon = new FrameworkElementFactory(typeof(Image));

				icon.SetBinding(Image.SourceProperty, new Binding("Icon") { Converter = new StringToBitmapImageConverter() });

				icon.SetValue(Image.WidthProperty, iconSize);

				icon.SetValue(Image.HeightProperty, iconSize);

				icon.SetValue(Image.MarginProperty, new Thickness(15, 0, 5, 0));

				icon.SetValue(Grid.ColumnProperty, 0);

				dp.AppendChild(icon);

			}



			FrameworkElementFactory tb = new FrameworkElementFactory(typeof(TextBlock));

			tb.SetBinding(TextBlock.TextProperty, new Binding(binding));

			tb.SetValue(TextBlock.TextTrimmingProperty, TextTrimming.CharacterEllipsis);

			tb.SetValue(TextBlock.HorizontalAlignmentProperty, alignment);

			tb.SetValue(Grid.ColumnProperty, 1);

			if (rightMost && !UseIcons)

				tb.SetValue(TextBlock.MarginProperty, new Thickness(15, 0, 5, 0));





			if (System.Windows.Forms.VisualStyles.VisualStyleInformation.DisplayName != "")

				tb.SetValue(TextBlock.ForegroundProperty, (active ? Brushes.Black : Brushes.Gray));



			DataTemplate dt = new DataTemplate();



			dp.AppendChild(tb);



			dt.VisualTree = dp;

			return dt;

		}



		/// <summary>

		/// Find the corresponding column configuration given the content of the column

		/// </summary>

		/// <param name="content">The displayed text on the column</param>

		/// <returns>The column configuration for the column</returns>

		private ViewDetailsColumn FindColumn(string content)

		{

			if (content == "#")

				return numberColumn;



			foreach (DictionaryEntry i in columns)

			{

				if (((ViewDetailsColumn)i.Value).Text == content)

					return (ViewDetailsColumn)i.Value;

			}

			return null;

		}



		#endregion Private



		#region Overrides



		/// <summary>

		/// Creates and return a ViewDetailsItem container.

		/// </summary>

		/// <returns>A ViewDetailsItem container</returns>

		protected override DependencyObject GetContainerForItemOverride()

		{

			return new ViewDetailsItem();

		}



		/// <summary>

		/// Invoked when the context menu is opening

		/// </summary>

		/// <param name="e">The event data</param>

		protected override void OnContextMenuOpening(ContextMenuEventArgs e)

		{

			// prevent the context menu from opening if the item under the mouse is not an item

			ListViewItem lvi = ViewDetailsUtilities.TryFindParent<ListViewItem>((DependencyObject)e.OriginalSource);

			GridViewColumnHeader gvch = ViewDetailsUtilities.TryFindParent<GridViewColumnHeader>((DependencyObject)e.OriginalSource);

			if (lvi == null && gvch == null)

				e.Handled = true;

			else

			{

				base.OnContextMenuOpening(e);

			}

		}



		/// <summary>

		/// Invoked when the ItemsSource property is changed.

		/// </summary>

		/// <param name="oldValue">The old source</param>

		/// <param name="newValue">The new source</param>

		/// <remarks>Will enumerate all items and set Number</remarks>

		protected override void OnItemsSourceChanged(IEnumerable oldValue, IEnumerable newValue)

		{

			// if all numbers are zero we fix the numbers

			bool allZero = true;

			foreach (ViewDetailsItemData item in newValue)

				if (item.Number != 0)

				{

					allZero = false;

					break;

				}

			int i = 1;

			if (allZero)

				foreach (ViewDetailsItemData item in newValue)

					item.Number = i++;



			base.OnItemsSourceChanged(oldValue, newValue);

		}



		/// <summary>

		/// Invoked when the user double-clicks the list

		/// </summary>

		/// <param name="e">The event data</param>

		protected override void OnMouseDoubleClick(MouseButtonEventArgs e)

		{

			// prevent the context menu from opening if the item under the mouse is not an item

			ListViewItem lvi = ViewDetailsUtilities.TryFindParent<ListViewItem>((DependencyObject)e.OriginalSource);

			if (lvi == null)

				e.Handled = true;

			else

				base.OnMouseDoubleClick(e);

		}



		/// <summary>

		/// Invoked when something is dropped on the list

		/// </summary>

		/// <param name="e">The event data</param>

		protected override void OnDrop(DragEventArgs e)

		{

			if (!(e.Data.GetDataPresent(DataFormats.FileDrop) && AcceptFileDrops) &&

				!(e.Data.GetDataPresent(typeof(List<object>).FullName) && IsDragSortable))

			{

				e.Effects = DragDropEffects.None;

				return;

			}



			if (e.Data.GetDataPresent(DataFormats.FileDrop))

			{

				string[] paths = e.Data.GetData(DataFormats.FileDrop, true) as string[];

				ListBoxItem lvi = ViewDetailsUtilities.TryFindFromPoint<ListBoxItem>(this, e.GetPosition(this));

				if (lvi != null)

				{

					int i = this.ItemContainerGenerator.IndexFromContainer(lvi);

					if (e.GetPosition(lvi).Y > lvi.RenderSize.Height / 2) i++;

					DispatchFilesDropped(paths, i);

				}

				else

					DispatchFilesDropped(paths, Items.Count);

			}



			else if (e.Data.GetDataPresent(typeof(List<object>).FullName))

			{

				ListBoxItem lvi = ViewDetailsUtilities.TryFindFromPoint<ListBoxItem>(this, e.GetPosition(this));

				if (lvi != null)

				{

					List<object> items = e.Data.GetData(typeof(List<object>).FullName) as List<object>;

					int i = this.ItemContainerGenerator.IndexFromContainer(lvi);

					if (e.GetPosition(lvi).Y > lvi.RenderSize.Height / 2) i++;



					// items may be out of order so we sort them

					List<int> indices = new List<int>();

					foreach (object t in items) // put all indices in a list

						indices.Add(Items.IndexOf(t));

					indices.Sort(); // sort the list

					items.Clear();

					foreach (int j in indices) // put back all items according to the sorted list

						items.Add(Items.GetItemAt(j) as object);



					// reorder source and remove GUI sorting

					ClearSort(true);



					foreach (object t in items)

					{

						int j = i;

						if (Items.IndexOf(t) > i) j++;

						DispatchMoveItem(t, i);

						i = j;

					}



					// change number value if we have a number column

					if (HasNumber)

					{

						foreach (ViewDetailsItemData o in Items)

						{

							o.Number = Items.IndexOf(o) + 1;

						}

					}



					SetSelectedItems(items);

				}

			}

			dropTarget.Visibility = System.Windows.Visibility.Collapsed;

		}



		/// <summary>

		/// Invoked when an item is dragged over the list

		/// </summary>

		/// <param name="e">The event data</param>

		protected override void OnDragOver(DragEventArgs e)

		{

			if (!(e.Data.GetDataPresent(DataFormats.FileDrop) && AcceptFileDrops) &&

				!(e.Data.GetDataPresent(typeof(List<object>).FullName) && IsDragSortable))

			{

				e.Effects = DragDropEffects.None;

				return;

			}



			ListBoxItem lvi = ViewDetailsUtilities.TryFindFromPoint<ListBoxItem>(this, e.GetPosition(this));

			if (lvi != null)

			{

				ScrollViewer sv = ViewDetailsUtilities.GetVisualChild<ScrollViewer>(this);

				if (sv != null && sv.ComputedVerticalScrollBarVisibility == System.Windows.Visibility.Visible)

					dropTarget.ScrollBar = true;

				else

					dropTarget.ScrollBar = false;



				dropTarget.Visibility = System.Windows.Visibility.Visible;

				Point p = lvi.TranslatePoint(new Point(0, 0), this);

				if (e.GetPosition(this).Y < p.Y + (lvi.RenderSize.Height / 2))

					dropTarget.Position = p.Y;

				else

					dropTarget.Position = p.Y + lvi.RenderSize.Height + 1;



				double scrollMargin = 50.0;

				double scrollStep = 1;

				double scrollSpeed = 0.05;

				if (sv != null && sv.CanContentScroll && ((DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds) - lastScroll > scrollSpeed)

				{

					if (e.GetPosition(this).Y > this.RenderSize.Height - scrollMargin)

					{

						sv.ScrollToVerticalOffset(sv.VerticalOffset + scrollStep);

						lastScroll = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds;

					}



					else if (e.GetPosition(this).Y < scrollMargin + 20.0)

					{

						sv.ScrollToVerticalOffset(sv.VerticalOffset - scrollStep);

						lastScroll = (DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0)).TotalSeconds;

					}

				}

			}

			else

				dropTarget.Visibility = System.Windows.Visibility.Collapsed;

		}



		/// <summary>

		/// Invoked when an unhandled DragLeave attached event reaches an element

		/// in its route that is derived from this class

		/// </summary>

		/// <param name="e">The event data</param>

		protected override void OnDragLeave(DragEventArgs e)

		{

			base.OnDragLeave(e);

			Point p = e.GetPosition(this);

			double x = p.X / ActualWidth;

			double y = p.Y / ActualHeight;

			if (x < 0.1 || 0.9 < x || y < 0.1 || 0.9 < y)

				dropTarget.Visibility = System.Windows.Visibility.Collapsed;

		}



		/// <summary>

		/// Responds to a list box selection change by raising a SelectionChanged event and

		/// saving the selection to the config structure is such as structure is set.

		/// </summary>

		/// <param name="e">The event data</param>

		protected override void OnSelectionChanged(SelectionChangedEventArgs e)

		{

			if (config != null)

			{

				config.SelectedIndices.Clear();

				foreach (object o in SelectedItems)

					config.SelectedIndices.Add(Items.IndexOf(o));

			}

			base.OnSelectionChanged(e);

		}



		#endregion Overrides



		#region Event handlers



		/// <summary>

		/// Invoked when the source collection changes

		/// </summary>

		/// <param name="sender">The sender of the event</param>

		/// <param name="e">The event data</param>

		public void ItemsSource_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)

		{

			switch (e.Action)

			{

				case NotifyCollectionChangedAction.Remove:

				case NotifyCollectionChangedAction.Add:

					foreach (ViewDetailsItemData o in Items.SourceCollection)

						o.Number = Items.IndexOf(o) + 1;

					break;



				default:

				case NotifyCollectionChangedAction.Reset:

					break;

			}

		}



		/// <summary>

		/// Invoked when the list is initialized

		/// </summary>

		/// <param name="sender">The sender of the event</param>

		/// <param name="e">The event data</param>

		private void ListView_Loaded(object sender, RoutedEventArgs e)

		{

			dropTarget = new ViewDetailsDropTarget(this);

			dropTarget.Visibility = System.Windows.Visibility.Hidden;

			AdornerLayer al = AdornerLayer.GetAdornerLayer(this);

			if (al != null)

				al.Add(dropTarget);

		}



		/// <summary>

		/// Invoked when a property of the config changes

		/// </summary>

		/// <param name="sender">The sender of the event</param>

		/// <param name="e">The event data</param>

		private void Config_PropertyChanged(object sender, PropertyChangedEventArgs e)

		{

			if (e.PropertyName == "Filter")

				Filter = config.Filter;

		}



		/// <summary>

		/// Invoked when a menu item in the header context menu is clicked

		/// </summary>

		/// <param name="sender">The sender of the event</param>

		/// <param name="e">The event data</param>

		private void HeaderMenu_Click(object sender, RoutedEventArgs e)

		{

			MenuItem item = sender as MenuItem;

			String name = (string)item.Tag;



			if (name == "#")

				IsNumberVisible = item.IsChecked;

			else

				ToggleColumn(name, item.IsChecked);



			RefreshHeaderMenu();

		}



		/// <summary>

		/// Invoked when the size of a column is changed

		/// </summary>

		/// <param name="sender">The sender of the event</param>

		/// <param name="e">The event data</param>

		private void Column_SizeChanged(object sender, SizeChangedEventArgs e)

		{

			GridViewColumnHeader gvch = sender as GridViewColumnHeader;

			ViewDetailsColumn vdc = FindColumn((string)gvch.Content);

			if (vdc != null)

				vdc.Width = gvch.ActualWidth;

		}



		/// <summary>

		/// Invoked when a column is clicked

		/// </summary>

		/// <param name="sender">The sender of the event</param>

		/// <param name="e">The event data</param>

		private void Column_Clicked(object sender, RoutedEventArgs e)

		{

			GridViewColumnHeader column = sender as GridViewColumnHeader;

			ListSortDirection direction;

			ViewDetailsColumn vdc = FindColumn((string)column.Content);

			if (vdc == null) return;



			if (!IsClickSortable || !vdc.IsSortable || (vdc != numberColumn && LockSortOnNumber))

				return;



			// get direction

			if (column != currentSortColumn) direction = ListSortDirection.Ascending;

			else if (currentSortDirection == ListSortDirection.Ascending) direction = ListSortDirection.Descending;

			else direction = ListSortDirection.Ascending;



			// apply sorting

			Sort(vdc, direction);



			if (config != null)

			{

				if (config.Sorts == null)

					config.Sorts = new List<string>();



				// remove previous sorts on this column

				string str1 = "asc:" + vdc.Name;

				if (config.Sorts.Contains(str1))

					config.Sorts.Remove(str1);

				string str2 = "dsc:" + vdc.Name;

				if (config.Sorts.Contains(str2))

					config.Sorts.Remove(str2);



				config.Sorts.Add((direction == ListSortDirection.Ascending ? "asc:" : "dsc:") + vdc.Name);



			}

		}



		/// <summary>

		/// Invoked when the configuration of columns changed

		/// </summary>

		/// <param name="sender">The sender of the event</param>

		/// <param name="e">The event data</param>

		private void ConfigColumns_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)

		{

			// TODO: add and remove new columns

		}



		/// <summary>

		/// Invoked when the property of a column changes

		/// </summary>

		/// <param name="sender">The sender of the event</param>

		/// <param name="e">The event data</param>

		private void ConfigColumn_PropertyChanged(object sender, PropertyChangedEventArgs e)

		{

			ViewDetailsColumn vdc = sender as ViewDetailsColumn;



			GridViewColumn gvc = columnTable[vdc.Name] as GridViewColumn;

			if (gvc == null) return;



			// rename headers and menu items

			if (e.PropertyName == "Text")

			{

				GridViewColumnHeader gvch = gvc.Header as GridViewColumnHeader;

				gvch.Content = vdc.Text;



				MenuItem mi = headerMenuTable[vdc.Name] as MenuItem;

				mi.Header = vdc.Text;

			}



			// TODO: implement other properties

		}



		/// <summary>

		/// Invoked when the columns are reordered

		/// </summary>

		/// <param name="sender">The sender of the event</param>

		/// <param name="e">The event data</param>

		private void Columns_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)

		{

			if (e.Action == NotifyCollectionChangedAction.Move)

			{

				// move the icon to the far left

				if ((e.OldStartingIndex == 0 || e.NewStartingIndex == 0) && UseIcons)

				{

					int oldIndex = e.OldStartingIndex == 0 ? e.NewStartingIndex : 1;

					GridViewColumn oldFirst = columnGrid.Columns[oldIndex];

					GridViewColumn newFirst = columnGrid.Columns[0];



					ViewDetailsColumn oldVdc = FindColumn((string)((GridViewColumnHeader)oldFirst.Header).Content);

					ViewDetailsColumn newVdc = FindColumn((string)((GridViewColumnHeader)newFirst.Header).Content);



					bool oldIsActive = IsClickSortable && ((GridViewColumnHeader)oldFirst.Header) == currentSortColumn;

					bool newIsActive = IsClickSortable && ((GridViewColumnHeader)newFirst.Header) == currentSortColumn;



					oldFirst.CellTemplate = CreateDataTemplate(oldVdc.Binding, oldVdc.Alignment, oldIsActive, false);

					newFirst.CellTemplate = CreateDataTemplate(newVdc.Binding, newVdc.Alignment, newIsActive, true);

				}



				// we may need to rearrange the column order in the config as well

				if (config != null)

				{

					// since we may have a number column in the menu but not in the column

					// list we have to compensate the indices accordingly

					bool wasNumber = false;

					int newAdjust = 0;

					int oldAdjust = 0;

					if (HasNumber)

					{

						if (NumberIndex == e.OldStartingIndex)

						{

							numberIndex = e.NewStartingIndex;

							config.NumberIndex = numberIndex;

							wasNumber = true;

						}

						else // adjust indices

						{

							if (NumberIndex < e.OldStartingIndex && IsNumberVisible) oldAdjust = 1;



							// adjust number index

							if (e.OldStartingIndex <= NumberIndex && NumberIndex < e.NewStartingIndex && IsNumberVisible) numberIndex--;

							else if (e.NewStartingIndex <= NumberIndex && NumberIndex < e.OldStartingIndex && IsNumberVisible) numberIndex++;



							if (NumberIndex <= e.NewStartingIndex && IsNumberVisible) newAdjust = 1;

						}

					}



					if (!wasNumber) // the number column is special, not in the list we rearrange

					{

						ViewDetailsColumn vdc = config.Columns[e.OldStartingIndex - oldAdjust];

						config.Columns.Remove(vdc);

						config.Columns.Insert(e.NewStartingIndex - newAdjust, vdc);

					}

				}



				MenuItem mi = headerMenu.Items[e.OldStartingIndex] as MenuItem;

				headerMenu.Items.Remove(mi);

				headerMenu.Items.Insert(e.NewStartingIndex, mi);

			}

		}



		#endregion Event handlers



		#region Dispatchers



		/// <summary>

		/// The dispatcher of the <see cref="ViewDetails.FilesDropped"/> event

		/// </summary>

		/// <param name="paths">The track that was either added or removed</param>

		/// <param name="position">The index where the files where dropped</param>

		private void DispatchFilesDropped(string[] paths, int position)

		{

			if (FilesDropped != null)

				FilesDropped(this, new FileDropEventArgs(paths, position));

		}



		/// <summary>

		/// The dispatcher of the <see cref="ViewDetails.MoveItem"/> event

		/// </summary>

		/// <param name="item">The item that is to be moved</param>

		/// <param name="position">The index that the item is to be moved to</param>

		private void DispatchMoveItem(object item, int position)

		{

			if (MoveItem != null)

				MoveItem(this, new MoveItemEventArgs(item, position));

		}



		#endregion



		#endregion Methods



		#region Events



		/// <summary>

		/// Occurs when files are dropped on the list.

		/// </summary>

		public event FileDropEventHandler FilesDropped;



		/// <summary>

		/// Occurs when an item needs to be moved

		/// </summary>

		public event MoveItemEventHandler MoveItem;



		#endregion

	}



	#region Delegates



	/// <summary>

	/// Represents the method that will handle the <see cref="ViewDetails.FilesDropped"/> event.

	/// </summary>

	/// <param name="sender">The sender of the event</param>

	/// <param name="e">The event data</param>

	public delegate void FileDropEventHandler(object sender, FileDropEventArgs e);



	/// <summary>

	/// Represents the method that will handle the <see cref="ViewDetails.MoveItem"/> event.

	/// </summary>

	/// <param name="sender">The sender of the event</param>

	/// <param name="e">The event data</param>

	public delegate void MoveItemEventHandler(object sender, MoveItemEventArgs e);



	/// <summary>

	/// Represents the method that will determine whether an item matches a filter string or not

	/// </summary>

	/// <param name="item">The item which should be examined</param>

	/// <param name="filterString">The string which should be matched</param>

	/// <returns>True if the item matches the string, otherwise False</returns>

	public delegate bool ViewDetailsSearchDelegate(ViewDetailsItemData item, string filterString);



	/// <summary>

	/// Represents the method that is called to focus and select an item of the ListView.

	/// </summary>

	/// <param name="itemIndex">The index of the item to focus and select</param>

	public delegate void FocusAndSelectItemDelegate(int itemIndex);



	#endregion



	#region Event arguments



	/// <summary>

	/// Provides data for the <see cref="ViewDetails.FilesDropped"/> event

	/// </summary>

	public class FileDropEventArgs

	{

		#region Properties

		

		/// <summary>

		/// Gets the paths of the files that were dropped

		/// </summary>

		public string[] Paths { get; private set; }



		/// <summary>

		/// Gets the index where the files were dropped

		/// </summary>

		public int Position { get; private set; }



		#endregion



		#region Constructor



		/// <summary>

		/// Initializes a new instance of the <see cref="FileDropEventArgs"/> class

		/// </summary>

		/// <param name="paths">The paths that was dropped</param>

		/// <param name="position">The index where the files where dropped</param>

		public FileDropEventArgs(string[] paths, int position)

		{

			Paths = paths;

			Position = position;

		}



		#endregion

	}



	/// <summary>

	/// Provides data for the <see cref="ViewDetails.MoveItem"/> event

	/// </summary>

	public class MoveItemEventArgs

	{

		#region Properties



		/// <summary>

		/// Gets the paths of the item that is to be moved

		/// </summary>

		public object Item { get; private set; }



		/// <summary>

		/// Gets the index that the item is to be moved to

		/// </summary>

		public int Position { get; private set; }



		#endregion



		#region Constructor



		/// <summary>

		/// Initializes a new instance of the <see cref="MoveItemEventArgs"/> class

		/// </summary>

		/// <param name="item">The item that is to be moved</param>

		/// <param name="position">The index that the item is to be moved to</param>

		public MoveItemEventArgs(object item, int position)

		{

			Item = item;

			Position = position;

		}



		#endregion

	}



	#endregion



	#region Data structures



	/// <summary>

	/// Describes the data source of an item inside the ViewDetails list

	/// </summary>

	public class ViewDetailsItemData : INotifyPropertyChanged

	{

		#region Members



		private int number;

		private bool isActive;

		private string icon;

		private bool strike;



		#endregion



		#region Properties



		/// <summary>

		/// Gets or sets the index number of the item

		/// </summary>

		public int Number

		{

			get { return number; }

			set { number = value; OnPropertyChanged("Number"); }

		}



		/// <summary>

		/// Gets or sets whether the item is marked as active or not

		/// </summary>

		public bool IsActive

		{

			get { return isActive; }

			set { isActive = value; OnPropertyChanged("IsActive"); }

		}



		/// <summary>

		/// Gets or sets the icon of the item

		/// </summary>

		public string Icon

		{

			get { return icon; }

			set { icon = value; OnPropertyChanged("Icon"); }

		}



		/// <summary>

		/// Gets or sets whether the items should feature a strikethrough

		/// </summary>

		public bool Strike

		{

			get { return strike; }

			set { strike = value; OnPropertyChanged("Strike"); }

		}



		#endregion



		#region INotifyPropertyChanged Members



		/// <summary>

		/// Occurs when the property of the item is changed

		/// </summary>

		public event PropertyChangedEventHandler PropertyChanged;



		/// <summary>

		/// Dispatches the PropertyChanged event

		/// </summary>

		/// <param name="name">The name of the property that was changed</param>

		public void OnPropertyChanged(string name)

		{

			if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(name));

		}



		#endregion

	}



	/// <summary>

	/// Describes a configuration for the ViewDetails class

	/// </summary>

	public class ViewDetailsConfig : INotifyPropertyChanged

	{

		#region Members



		string filter = "";



		#endregion



		#region Properties



		/// <summary>

		/// Gets or sets the columns

		/// </summary>

		public ObservableCollection<ViewDetailsColumn> Columns { get; set; }



		/// <summary>

		/// Gets or sets the number column configuration

		/// </summary>

		public ViewDetailsColumn NumberColumn { get; set; }



		/// <summary>

		/// Gets or sets the indices of the selected items

		/// </summary>

		public List<int> SelectedIndices { get; set; }



		/// <summary>

		/// Gets or sets the the sort orders

		/// Each sort is represented as a string on the format

		/// "asc/dsc:ColumnName"

		/// </summary>

		public List<string> Sorts { get; set; }



		/// <summary>

		/// Gets or sets text used to filter the list

		/// </summary>

		public string Filter

		{

			get { return filter; }

			set

			{

				filter = value;

				OnPropertyChanged("Filter");

			}

		}



		/// <summary>

		/// Gets or sets whether the number column should be enabled

		/// </summary>

		public bool HasNumber { get; set; }



		/// <summary>

		/// Gets or sets whether the number column should be visible

		/// </summary>

		public bool IsNumberVisible { get; set; }



		/// <summary>

		/// Gets or sets the position of the number column

		/// </summary>

		public int NumberIndex { get; set; }



		/// <summary>

		/// Gets or sets whether to display icons or not

		/// </summary>

		public bool UseIcons { get; set; }



		/// <summary>

		/// Gets or sets whether files can be dropped onto the list

		/// </summary>

		public bool AcceptFileDrops { get; set; }



		/// <summary>

		/// Gets or sets whether the list can be resorted via drag and drop

		/// </summary>

		public bool IsDragSortable { get; set; }



		/// <summary>

		/// Gets or sets whether the list can be resorted by clicking on a column

		/// </summary>

		public bool IsClickSortable { get; set; }



		/// <summary>

		/// Gets or sets whether only the number column can be used to sort the list

		/// </summary>

		public bool LockSortOnNumber { get; set; }



		#endregion



		#region INotifyPropertyChanged Members



		/// <summary>

		/// Occurs when the property of the item is changed

		/// </summary>

		public event PropertyChangedEventHandler PropertyChanged;



		/// <summary>

		/// Dispatches the PropertyChanged event

		/// </summary>

		/// <param name="name">The name of the property that was changed</param>

		public void OnPropertyChanged(string name)

		{

			if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(name));

		}



		#endregion

	}



	/// <summary>

	/// Represents a column of a details list

	/// </summary>

	public class ViewDetailsColumn : INotifyPropertyChanged

	{

		#region Members



		private string text;

		private string binding;

		private string sortField;

		private bool isAlwaysVisible = false;

		private bool isSortable = true;

		private double width = 50.0;

		private bool isVisible = true;

		private HorizontalAlignment alignment = HorizontalAlignment.Left;



		#endregion



		#region Properties



		/// <summary>

		/// Gets or sets the name of the column

		/// </summary>

		public string Name { get; set; }



		/// <summary>

		/// Gets or sets the displayed text

		/// </summary>

		public string Text

		{

			get { return text; }

			set

			{

				text = value;

				OnPropertyChanged("Text");

			}

		}



		/// <summary>

		/// Gets or sets the value to bind to

		/// </summary>

		public string Binding

		{

			get { return binding; }

			set

			{

				binding = value;

				OnPropertyChanged("Binding");

			}

		}



		/// <summary>

		/// Gets or sets the value to sort on

		/// </summary>

		public string SortField

		{

			get { return sortField; }

			set

			{

				sortField = value;

				OnPropertyChanged("SortField");

			}

		}



		/// <summary>

		/// Gets or sets whether the column is always visible

		/// </summary>

		public bool IsAlwaysVisible

		{

			get { return isAlwaysVisible; }

			set

			{

				isAlwaysVisible = value;

				OnPropertyChanged("IsAlwaysVisible");

			}

		}



		/// <summary>

		/// Gets or sets whether the column is sortable

		/// </summary>

		public bool IsSortable

		{

			get { return isSortable; }

			set

			{

				isSortable = value;

				OnPropertyChanged("IsSortable");

			}

		}



		/// <summary>

		/// Gets or sets the width of the column

		/// </summary>

		public double Width

		{

			get { return width; }

			set

			{

				width = value;

				OnPropertyChanged("Width");

			}

		}



		/// <summary>

		/// Gets or sets whether the column is visible (only effective if IsAlwaysVisible is false)

		/// </summary>

		public bool IsVisible

		{

			get { return isVisible; }

			set

			{

				isVisible = value;

				OnPropertyChanged("IsVisible");

			}

		}



		/// <summary>

		/// Gets or sets the text alignment of the displayed text

		/// </summary>

		public HorizontalAlignment Alignment

		{

			get { return alignment; }

			set

			{

				alignment = value;

				OnPropertyChanged("Alignment");

			}

		}



		#endregion



		#region INotifyPropertyChanged Members



		/// <summary>

		/// Occurs when the property of the item is changed

		/// </summary>

		public event PropertyChangedEventHandler PropertyChanged;



		/// <summary>

		/// Dispatches the PropertyChanged event

		/// </summary>

		/// <param name="name">The name of the property that was changed</param>

		public void OnPropertyChanged(string name)

		{

			if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs(name));

		}



		#endregion

	}



	#endregion



	/// <summary>

	/// The graphical drag-n-drop target of ViewDetails

	/// </summary>

	public class ViewDetailsDropTarget : Adorner

	{

		#region Members



		private double position;

		private bool scrollbar = false;



		#endregion



		#region Properties



		/// <summary>

		/// Gets or sets the vertical position of the drop target

		/// </summary>

		public double Position

		{

			get

			{

				return position;

			}

			set

			{

				position = value;

				this.InvalidateVisual();



			}

		}



		/// <summary>

		/// Gets or sets whether the drop target should make space for a vertical scroll bar

		/// </summary>

		public bool ScrollBar

		{

			get

			{

				return scrollbar;

			}

			set

			{

				scrollbar = value;

				this.InvalidateVisual();



			}

		}



		#endregion



		#region Constructor



		/// <summary>

		/// Creates an instance of the DropTarget class

		/// </summary>

		/// <param name="adornedElement">The element that the drop target should adorn</param>

		public ViewDetailsDropTarget(UIElement adornedElement)

			: base(adornedElement)

		{

			position = adornedElement.DesiredSize.Height / 2;

			IsHitTestVisible = false;

			SnapsToDevicePixels = true;

		}



		#endregion



		#region Override



		/// <summary>

		/// Invoked when the target is rendered.

		/// Does the actual painting of the drop target.

		/// </summary>

		/// <param name="drawingContext">The drawing context of the rendering</param>

		protected override void OnRender(DrawingContext drawingContext)

		{

			Point left = new Point(0, position);

			double width = AdornedElement.DesiredSize.Width;

			if (ScrollBar) width -= 18;

			Point right = new Point(width, position);



			PointCollection points = new PointCollection();

			points.Add(new Point(0, 0));

			points.Add(new Point(0, 6));

			points.Add(new Point(3, 3));



			PathFigure pfig1 = new PathFigure();

			pfig1.StartPoint = new Point(2, position - 2);

			pfig1.Segments.Add(new LineSegment(new Point(4, position), true));

			pfig1.Segments.Add(new LineSegment(new Point(width - 4, position), true));

			pfig1.Segments.Add(new LineSegment(new Point(width - 2, position - 2), true));

			pfig1.Segments.Add(new LineSegment(new Point(width - 2, position + 3), true));

			pfig1.Segments.Add(new LineSegment(new Point(width - 4, position + 1), true));

			pfig1.Segments.Add(new LineSegment(new Point(4, position + 1), true));

			pfig1.Segments.Add(new LineSegment(new Point(2, position + 3), true));



			PathGeometry p = new PathGeometry();

			p.Figures.Add(pfig1);



			drawingContext.DrawGeometry(Brushes.Black, new Pen(Brushes.Black, 1), p);

		}



		#endregion

	}



	/// <summary>

	/// A single item in the list of the ViewDetails control

	/// </summary>

	public partial class ViewDetailsItem : ListViewItem

	{

		#region Members



		private Point startDragPoint;

		private bool isDragging = false;

		private bool doDeselect = false;



		#endregion



		#region Override



		/// <summary>

		/// Called when the user presses the right mouse button over the ViewDetailsItem.

		/// </summary>

		/// <param name="e">The event data</param>

		protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)

		{

			if (!IsSelected)

				base.OnMouseLeftButtonDown(e);

			else

				doDeselect = true;

			isDragging = true;

			startDragPoint = e.GetPosition(null);

		}



		/// <summary>

		/// Called when the user releases the right mouse button over the ViewDetailsItem.

		/// </summary>

		/// <param name="e">The event data</param>

		protected override void OnMouseLeftButtonUp(MouseButtonEventArgs e)

		{

			if (doDeselect)

				base.OnMouseLeftButtonDown(e);

			base.OnMouseLeftButtonUp(e);

			doDeselect = false;

		}



		/// <summary>

		/// Called when the user moves the mouse over the ViewDetailsItem.

		/// </summary>

		/// <param name="e">The event data</param>

		protected override void OnMouseMove(MouseEventArgs e)

		{

			base.OnMouseMove(e);

			if (!isDragging) return;

			if (e.LeftButton == MouseButtonState.Released)

			{

				isDragging = false;

				return;

			}

			Vector diff = startDragPoint - e.GetPosition(null);

			if (Math.Abs(diff.X) < SystemParameters.MinimumHorizontalDragDistance && Math.Abs(diff.Y) < SystemParameters.MinimumVerticalDragDistance)

				return;



			ListBoxItem lvi = ViewDetailsUtilities.TryFindFromPoint<ListBoxItem>(this, e.GetPosition(this));

			ViewDetails vd = ViewDetailsUtilities.TryFindParent<ViewDetails>(lvi);

			if (vd == null)

				return;



			if (vd.SelectedItems.Count <= 0)

				return; // halt if we don't have any items to drag



			List<object> DraggedItems = new List<object>();



			foreach (object DraggedItem in vd.SelectedItems)

				DraggedItems.Add(DraggedItem);



			DragDropEffects AllowedEffects = DragDropEffects.Move;



			DragDrop.DoDragDrop(this, DraggedItems, AllowedEffects);

		}



		#endregion

	}



	/// <summary>

	/// A collection of some static help methods for ViewDetails

	/// </summary>

	public static class ViewDetailsUtilities

	{



		/// <summary>Finds a parent of a given item on the visual tree.</summary>

		/// <typeparam name="T">The type of the queried item.</typeparam>

		/// <param name="iChild">A direct or indirect child of the queried item.</param>

		/// <returns>The first parent item that matches the submitted type parameter. If not matching item can be found, a null reference is being returned.</returns>

		public static T TryFindParent<T>(this DependencyObject iChild)

		  where T : DependencyObject

		{

			// Get parent item.

			DependencyObject parentObject = GetParentObject(iChild);



			// We've reached the end of the tree.

			if (parentObject == null)

				return null;



			// Check if the parent matches the type we're looking for.

			// Else use recursion to proceed with next level.

			T parent = parentObject as T;

			return parent ?? TryFindParent<T>(parentObject);

		}



		/// <summary>

		/// This method is an alternative to WPF's <see cref="VisualTreeHelper.GetParent"/> method, which also

		/// supports content elements. Keep in mind that for content element, this method falls back to the logical tree of the element!

		/// </summary>

		/// <param name="iChild">The item to be processed.</param>

		/// <returns>The submitted item's parent, if available. Otherwise null.</returns>

		public static DependencyObject GetParentObject(this DependencyObject iChild)

		{

			if (iChild == null)

			{

				return null;

			}



			// Handle content elements separately.

			ContentElement contentElement = iChild as ContentElement;

			if (contentElement != null)

			{

				DependencyObject parent = ContentOperations.GetParent(contentElement);

				if (parent != null) return parent;



				FrameworkContentElement frameworkContentElement = contentElement as FrameworkContentElement;

				return frameworkContentElement != null ? frameworkContentElement.Parent : null;

			}



			// Also try searching for parent in framework elements (such as DockPanel, etc).

			FrameworkElement frameworkElement = iChild as FrameworkElement;

			if (frameworkElement != null)

			{

				DependencyObject parent = frameworkElement.Parent;

				if (parent != null) return parent;

			}



			// If it's not a ContentElement/FrameworkElement, rely on VisualTreeHelper.

			return VisualTreeHelper.GetParent(iChild);

		}



		/// <summary>Tries to locate a given item within the visual tree, starting with the dependency object at a given position.</summary>

		/// <typeparam name="T">The type of the element to be found on the visual tree of the element at the given location.</typeparam>

		/// <param name="iReference">The main element which is used to perform hit testing.</param>

		/// <param name="iPoint">The position to be evaluated on the origin.</param>

		public static T TryFindFromPoint<T>(this UIElement iReference, Point iPoint) where T : DependencyObject

		{

			DependencyObject element = iReference.InputHitTest(iPoint) as DependencyObject;

			if (element == null)

			{

				return null;

			}

			else if (element is T)

				return (T)element;

			else

				return TryFindParent<T>(element);

		}



		/// <summary>

		/// Tries to locate a child of a given item within the visual tree

		/// </summary>

		/// <typeparam name="T">The type of the element to be found on the visual tree of the parent to the element</typeparam>

		/// <param name="referenceVisual">A direct or indirect parent of the element to be found</param>

		/// <returns>The first child item that matches the submitted type parameter. If not matching item can be found, a null reference is being returned.</returns>

		public static T GetVisualChild<T>(Visual referenceVisual) where T : Visual

		{

			Visual child = null;

			for (Int32 i = 0; i < VisualTreeHelper.GetChildrenCount(referenceVisual); i++)

			{

				child = VisualTreeHelper.GetChild(referenceVisual, i) as Visual;

				if (child != null && (child.GetType() == typeof(T)))

				{

					break;

				}

				else if (child != null)

				{

					child = GetVisualChild<T>(child);

					if (child != null && (child.GetType() == typeof(T)))

					{

						break;

					}

				}

			}

			return child as T;

		}

	}



	/// <summary>

	/// Represents a converter for turning an icon path into a bitmap image

	/// </summary>

	public class StringToBitmapImageConverter : IValueConverter

	{

		/// <summary>

		/// Converts a path into a bitmap

		/// </summary>

		/// <param name="value">The path to the image</param>

		/// <param name="targetType">The type of the target (not used)</param>

		/// <param name="parameter">Additional parameters (not used)</param>

		/// <param name="culture">The current culture (not used)</param>

		/// <returns>A bitmap image created from the path given</returns>

		public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)

		{

			if (value == null) return null;

			string uristring = value as string;

			if (uristring.Substring(uristring.Length-4) == ".ico")

				return Utilities.GetIcoImage(uristring, 16, 16);

			return new BitmapImage(new Uri(uristring, UriKind.RelativeOrAbsolute));

		}



		/// <summary>

		/// This method is not implemented and will throw an exception if used

		/// </summary>

		/// <param name="value">The image</param>

		/// <param name="targetType">The target type</param>

		/// <param name="parameter">Additional parameters</param>

		/// <param name="culture">The current culture</param>

		/// <returns>Nothing</returns>

		public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)

		{

			throw new NotSupportedException();

		}

	}

}