MultiSelectComboBox . Added template selectors. Not completed yet.

1 files changed, 264 insertions, 25 deletions

diff --git a/Software/Visual_Studio/Tango.SharedUI/Controls/MultiSelectComboBox.cs b/Software/Visual_Studio/Tango.SharedUI/Controls/MultiSelectComboBox.cs
index 66eaa4e14..94f263be7 100644
--- a/Software/Visual_Studio/Tango.SharedUI/Controls/MultiSelectComboBox.cs
+++ b/Software/Visual_Studio/Tango.SharedUI/Controls/MultiSelectComboBox.cs
@@ -16,35 +16,126 @@ using System.Windows.Navigation;
 using System.Windows.Shapes;
 using Tango.Core.Commands;
 using System.ComponentModel;
+using System.Windows.Controls.Primitives;
+using System.Windows.Threading;
 
 namespace Tango.SharedUI.Controls
 {
+    internal sealed class MultiSelectComboBoxTemplateSelector : DataTemplateSelector
+    {
+        public override DataTemplate SelectTemplate(object item, DependencyObject container)
+        {
+            FrameworkElement element = container as FrameworkElement;
+            if (element != null && item != null && item is MultiSelectComboBoxItem)
+                return element.FindResource("CheckItem") as DataTemplate;
+           
+            return element.FindResource("SearchItem") as DataTemplate; ;
+
+        }
+    }
+    
+    interface IMultiSelectComboBoxItem
+    {
+        string Text { get; set; }
+    }
+    public class MultiSelectComboBoxItem : IMultiSelectComboBoxItem
+    {
+        public string Text { get; set; }
+        public MultiSelectComboBoxItem(string text)
+        {
+            Text = text;
+        }
+        public override string ToString()
+        {
+            return Text;
+        }
+    }
+    public class MultiSelectComboBoxSearchItem : IMultiSelectComboBoxItem
+    {
+        public string Text { get; set; }
+        public MultiSelectComboBoxSearchItem(string text = "")
+        {
+            Text = text;
+        }
+        public override string ToString()
+        {
+            return Text;
+        }
+    }
+
+    [TemplatePart(Name = MultiSelectComboBox.PartEditor, Type = typeof(TextBox))]
+    [TemplatePart(Name = MultiSelectComboBox.PartPopup, Type = typeof(Popup))]
     public class MultiSelectComboBox : Control
     {
+        #region Fields
+        public const string PartEditor = "Edit_PART";
+        public const string PartPopup = "MultiSel_Popup";
+        private ItemsControl _items_control;
+        private bool _isLoaded;
+        #endregion
+        #region "Constructors"  
+
         static MultiSelectComboBox()
         {
             DefaultStyleKeyProperty.OverrideMetadata(typeof(MultiSelectComboBox), new FrameworkPropertyMetadata(typeof(MultiSelectComboBox)));
             
         }
-
         public MultiSelectComboBox() : base()
         {
+            SelectedItemsList = new ObservableCollection<object>();
             RemoveAllCommand = new RelayCommand((() => SelectedItemsList.Clear()), () => SelectedItemsList != null && SelectedItemsList.Count > 0);
-            RemoveItemCommand = new RelayCommand<string>((item) => SelectedItemsList.Remove(item), () => SelectedItemsList != null);
-            AddItemCommand = new RelayCommand<string>((item) => SelectedItemsList.Add(item));
-            SearchText = "";
+            RemoveItemCommand = new RelayCommand<MultiSelectComboBoxItem>((item) => SelectedItemsList.Remove(item), () => SelectedItemsList != null);
+            AddItemCommand = new RelayCommand<string>((item) => SelectedItemsList.Add(new MultiSelectComboBoxItem(item)));
+            SearchText = new MultiSelectComboBoxSearchItem();
+            Loaded += MultiSelectComboBox_Loaded;
+            _isLoaded = false;
+
+
         }
+        #endregion
 
         #region Properties
 
-        public ObservableCollection<string> SelectedItemsList
+        private TextBox _editor;
+
+        public TextBox Editor
         {
-            get { return (ObservableCollection<string>)GetValue(SelectedItemsListProperty); }
+            get { return _editor; }
+            set { _editor = value; }
+        }
+
+        private Popup _popup;
+
+        public Popup Popup
+        {
+            get { return _popup; }
+            set { _popup = value; }
+        }
+
+        private DispatcherTimer _fetchTimer;
+
+        public DispatcherTimer FetchTimer
+        {
+            get { return _fetchTimer; }
+            set { _fetchTimer = value; }
+        }
+
+        //private SelectionAdapter _selectionAdapter;
+
+        //public SelectionAdapter SelectionAdapter
+        //{
+        //    get { return _selectionAdapter; }
+        //    set { _selectionAdapter = value; }
+        //}
+
+        public ObservableCollection<object> SelectedItemsList
+        {
+            get { return (ObservableCollection<object>)GetValue(SelectedItemsListProperty); }
             set { SetValue(SelectedItemsListProperty, value); }
         }
         
         public static readonly DependencyProperty SelectedItemsListProperty =
-            DependencyProperty.Register("SelectedItemsList", typeof(ObservableCollection<string>), typeof(MultiSelectComboBox), new PropertyMetadata(default(ObservableCollection<string>)));
+            DependencyProperty.Register("SelectedItemsList", typeof(ObservableCollection<object>), typeof(MultiSelectComboBox), new PropertyMetadata(default(ObservableCollection<object>)));
 
  
         public ListCollectionView SearchItemsList
@@ -67,23 +158,21 @@ namespace Tango.SharedUI.Controls
         public static readonly DependencyProperty ItemsProperty =
             DependencyProperty.Register("Items", typeof(ObservableCollection<string>), typeof(MultiSelectComboBox), new PropertyMetadata(default(ObservableCollection<string>)));
 
-
-
+        
         public bool IsToggleChecked
         {
             get { return (bool)GetValue(IsToggleCheckedProperty); }
             set { SetValue(IsToggleCheckedProperty, value); }
         }
-        public static readonly DependencyProperty IsToggleCheckedProperty =
-            DependencyProperty.Register("IsToggleChecked", typeof(bool), typeof(MultiSelectComboBox), new PropertyMetadata(false));
-
 
+        public static readonly DependencyProperty IsToggleCheckedProperty = 
+            DependencyProperty.Register("IsToggleChecked", typeof(bool), typeof(MultiSelectComboBox), new FrameworkPropertyMetadata(false));
 
-        private string _searchText;
+        private MultiSelectComboBoxSearchItem _searchText;
         /// <summary>
         /// Gets or sets the search text of TextBox.
         /// </summary>
-        public string SearchText
+        public MultiSelectComboBoxSearchItem SearchText
         {
             get { return _searchText; }
             set {_searchText = value;
@@ -91,15 +180,47 @@ namespace Tango.SharedUI.Controls
                 OnTextChanged();
             }
         }
+        #endregion
+
+        private void MultiSelectComboBox_Loaded(object sender, RoutedEventArgs e)
+        {
+            if (!_isLoaded)
+            {
+                ToggleButton b2 = GetTemplateChild("MultiSelToggleButton") as ToggleButton;
+                if (b2 != null)
+                {
+                   // ct.LoadContent();
+                    _items_control = b2.Template.FindName("SelectedItemsControl", b2) as ItemsControl;
+                    if (_items_control != null)
+                    {
+                        var wrapPanel = _items_control.FindChild<WrapPanel>();
+                        if (wrapPanel != null)
+                        {
+                            _items_control.Bind(ItemsControl.HeightProperty, wrapPanel, WrapPanel.ActualHeightProperty, BindingMode.OneWay);
+                            _isLoaded = true;
+
+                            var searchItem =(_items_control.ItemContainerGenerator.ContainerFromItem(SearchText));
+                            Editor = searchItem.FindVisualChildren< TextBox>().FirstOrDefault(x => x.Name == PartEditor);
+                            if (Editor != null)
+                            {
+                                Editor.TextChanged += OnEditorTextChanged;
+                                Editor.PreviewKeyDown += OnEditorKeyDown;
+                                Editor.LostFocus += OnEditorLostFocus;
+                            }
+                        }
+                    }
+                }
+            }
+        }
 
         void OnTextChanged()
         {
             if(SearchItemsList != null)
             {
-                if (String.IsNullOrEmpty(SearchText))
+                if (String.IsNullOrEmpty(SearchText.Text))
                    SearchItemsList.Filter = null;
                 else
-                    SearchItemsList.Filter = new Predicate<object>(o => ((string)o == SearchText));
+                    SearchItemsList.Filter = new Predicate<object>(o => ((string)o == SearchText.Text));
             }
         }
         /// <summary>
@@ -115,10 +236,7 @@ namespace Tango.SharedUI.Controls
         {
             PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propName));
         }
-
-       
-        #endregion
-
+        
         /// <summary>
         /// When overridden in a derived class, is invoked whenever application code or internal processes call <see cref="M:System.Windows.FrameworkElement.ApplyTemplate" />.
         /// </summary>
@@ -126,8 +244,51 @@ namespace Tango.SharedUI.Controls
         {
             base.OnApplyTemplate();
             if (SelectedItemsList == null)
-                SelectedItemsList = new ObservableCollection<string>();
+                SelectedItemsList = new ObservableCollection<object>();
+            SelectedItemsList.Add(SearchText);
+            
+           
             SearchItemsList = new ListCollectionView(this.Items);
+            
+            //DataTemplate temp = Template.FindName("SearchItem", this) as DataTemplate;
+            //Editor = Template.FindName(PartEditor, this) as TextBox;
+            Popup = Template.FindName(PartPopup, this) as Popup;
+            //ItemsSelector = Template.FindName(PartSelector, this) as Selector;
+            //_partSelectedContent = Template.FindName("PART_SelectedContent", this) as ContentControl;
+           // BindingEvaluator = new BindingEvaluator(new Binding(DisplayMember));
+
+            if (Editor != null)
+            {
+                Editor.TextChanged += OnEditorTextChanged;
+                Editor.PreviewKeyDown += OnEditorKeyDown;
+                Editor.LostFocus += OnEditorLostFocus;
+                Editor.Focus();
+
+                //if (SelectedItem != null)
+                //{
+                //    Editor.Text = BindingEvaluator.Evaluate(SelectedItem);
+                //}
+
+            }
+
+            this.GotFocus += SelTextBox_GotFocus;
+
+            if (Popup != null)
+            {
+                Popup.StaysOpen = false;
+                Popup.Opened += OnPopupOpened;
+                Popup.Closed += OnPopupClosed;
+            }
+            //if (ItemsSelector != null)
+            //{
+            //    SelectionAdapter = new SelectionAdapter(ItemsSelector);
+            //    SelectionAdapter.Commit += OnSelectionAdapterCommit;
+            //    SelectionAdapter.Cancel += OnSelectionAdapterCancel;
+            //    SelectionAdapter.SelectionChanged += OnSelectionAdapterSelectionChanged;
+            //    ItemsSelector.PreviewMouseDown += ItemsSelector_PreviewMouseDown;
+            //}
+
+            //_isUpdatingText = false;
 
             //ItemsControl iControl = FindName("asd") as ItemsControl;
             //iControl.ItemContainerGenerator.ItemsChanged += ItemContainerGenerator_ItemsChanged;
@@ -139,10 +300,89 @@ namespace Tango.SharedUI.Controls
             //}
         }
 
+        private void OnEditorTextChanged(object sender, TextChangedEventArgs e)
+        {
+            if (FetchTimer == null)
+            {
+                FetchTimer = new DispatcherTimer();
+                FetchTimer.Interval = TimeSpan.FromMilliseconds(500);
+                FetchTimer.Tick += OnFetchTimerTick;
+            }
+            FetchTimer.IsEnabled = false;
+            FetchTimer.Stop();
+           // SetSelectedItem(null);
+            if (Editor.Text.Length > 0)
+            {
+               // IsLoading = true;
+                IsToggleChecked = true;
+               // ItemsSelector.ItemsSource = null;
+                FetchTimer.IsEnabled = true;
+                FetchTimer.Start();
+            }
+            else
+            {
+                IsToggleChecked = false;
+            }
+        }
+
+        private void OnFetchTimerTick(object sender, EventArgs e)
+        {
+            FetchTimer.IsEnabled = false;
+            FetchTimer.Stop();
+        }
+
+        private void OnEditorKeyDown(object sender, KeyEventArgs e)
+        {
+            //if (SelectionAdapter != null)
+            {
+                if (IsToggleChecked)
+                {
+                    // SelectionAdapter.HandleKeyDown(e);
+                } 
+                else
+                    IsToggleChecked = e.Key == Key.Down || e.Key == Key.Up;
+            }
+        }
+
+        private void OnEditorLostFocus(object sender, RoutedEventArgs e)
+        {
+            if (!IsKeyboardFocusWithin)
+            {
+                IsToggleChecked = false;
+            }
+        }
+
+        private void SelTextBox_GotFocus(object sender, RoutedEventArgs e)
+        {
+            Editor?.Focus();
+        }
+
+        private void OnPopupOpened(object sender, EventArgs e)
+        {
+            //ItemsSelector.SelectedItem = SelectedItem;
+        }
+        private void OnPopupClosed(object sender, EventArgs e)
+        {
+              OnSelectionAdapterCommit();
+            
+        }
         private void ItemContainerGenerator_ItemsChanged(object sender, System.Windows.Controls.Primitives.ItemsChangedEventArgs e)
         {
             
         }
+        private void OnSelectionAdapterCommit()
+        {
+            IsToggleChecked = false;
+        //    if (ItemsSelector.SelectedItem != null)
+        //    {
+        //        SelectedItem = ItemsSelector.SelectedItem;
+        //        _isUpdatingText = true;
+        //        Editor.Text = GetDisplayText(ItemsSelector.SelectedItem);
+        //        SetSelectedItem(ItemsSelector.SelectedItem);
+        //        _isUpdatingText = false;
+        //        IsDropDownOpen = false;
+        //    }
+        }
 
         #region Commands
         /// <summary>
@@ -158,10 +398,10 @@ namespace Tango.SharedUI.Controls
         /// <summary>
         /// The remove item from SelectedItemsList command property
         /// </summary>
-        public static DependencyProperty RemoveItemCommandProperty = DependencyProperty.Register("RemoveItemCommand", typeof(RelayCommand<string>), typeof(MultiSelectComboBox));
-        public RelayCommand<string> RemoveItemCommand
+        public static DependencyProperty RemoveItemCommandProperty = DependencyProperty.Register("RemoveItemCommand", typeof(RelayCommand<MultiSelectComboBoxItem>), typeof(MultiSelectComboBox));
+        public RelayCommand<MultiSelectComboBoxItem> RemoveItemCommand
         {
-            get { return (RelayCommand<string>)GetValue(RemoveItemCommandProperty); }
+            get { return (RelayCommand<MultiSelectComboBoxItem>)GetValue(RemoveItemCommandProperty); }
             private set { SetValue(RemoveItemCommandProperty, value); }
         }
 
@@ -174,7 +414,6 @@ namespace Tango.SharedUI.Controls
         }
         #endregion
 
-       
         
     }
 }