brianlagunas_cp
15 years ago
7 changed files with 380 additions and 2 deletions
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using System.Windows; |
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using System.Windows.Controls; |
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namespace Microsoft.Windows.Controls |
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{ |
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public class TokenItem : ContentControl |
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{ |
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static TokenItem() |
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{ |
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DefaultStyleKeyProperty.OverrideMetadata(typeof(TokenItem), new FrameworkPropertyMetadata(typeof(TokenItem))); |
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} |
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public static readonly DependencyProperty TokenKeyProperty = DependencyProperty.Register("TokenKey", typeof(string), typeof(TokenItem), new UIPropertyMetadata(null)); |
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public string TokenKey |
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{ |
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get { return (string)GetValue(TokenKeyProperty); } |
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set { SetValue(TokenKeyProperty, value); } |
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} |
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} |
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} |
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//Based of the code written by Pavan Podila
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//http://blog.pixelingene.com/2010/10/tokenizing-control-convert-text-to-tokens/
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using System; |
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using System.Linq; |
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using System.Windows; |
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using System.Windows.Controls; |
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using System.Windows.Documents; |
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using System.Windows.Input; |
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namespace Microsoft.Windows.Controls |
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{ |
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public class TokenizedTextBox : ItemsControl |
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{ |
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#region Members
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private System.Windows.Controls.RichTextBox _rtb = null; |
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private bool _surpressTextChanged = false; |
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private bool _surpressTextChangedEvent = false; |
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#endregion //Members
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#region Properties
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public static readonly DependencyProperty SearchMemberPathProperty = DependencyProperty.Register("SearchMemberPath", typeof(string), typeof(TokenizedTextBox), new UIPropertyMetadata(String.Empty)); |
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public string SearchMemberPath |
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{ |
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get { return (string)GetValue(SearchMemberPathProperty); } |
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set { SetValue(SearchMemberPathProperty, value); } |
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} |
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public static readonly DependencyProperty TokenDelimiterProperty = DependencyProperty.Register("TokenDelimiter", typeof(string), typeof(TokenizedTextBox), new UIPropertyMetadata(";")); |
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public string TokenDelimiter |
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{ |
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get { return (string)GetValue(TokenDelimiterProperty); } |
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set { SetValue(TokenDelimiterProperty, value); } |
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} |
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public static readonly DependencyProperty TokenTemplateProperty = DependencyProperty.Register("TokenTemplate", typeof(DataTemplate), typeof(TokenizedTextBox), new UIPropertyMetadata(null)); |
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public DataTemplate TokenTemplate |
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{ |
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get { return (DataTemplate)GetValue(TokenTemplateProperty); } |
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set { SetValue(TokenTemplateProperty, value); } |
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} |
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public static readonly DependencyProperty TextProperty = DependencyProperty.Register("Text", typeof(string), typeof(TokenizedTextBox), new UIPropertyMetadata(null, OnTextChanged)); |
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public string Text |
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{ |
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get { return (string)GetValue(TextProperty); } |
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set { SetValue(TextProperty, value); } |
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} |
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private static void OnTextChanged(DependencyObject o, DependencyPropertyChangedEventArgs e) |
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{ |
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TokenizedTextBox tokenizedTextBox = o as TokenizedTextBox; |
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if (tokenizedTextBox != null) |
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tokenizedTextBox.OnTextChanged((string)e.OldValue, (string)e.NewValue); |
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} |
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protected virtual void OnTextChanged(string oldValue, string newValue) |
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{ |
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if (_rtb == null || _surpressTextChanged) |
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return; |
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} |
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public static readonly DependencyProperty ValueMemberPathProperty = DependencyProperty.Register("ValueMemberPath", typeof(string), typeof(TokenizedTextBox), new UIPropertyMetadata(String.Empty)); |
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public string ValueMemberPath |
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{ |
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get { return (string)GetValue(ValueMemberPathProperty); } |
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set { SetValue(ValueMemberPathProperty, value); } |
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} |
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#endregion //Properties
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#region Constructors
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static TokenizedTextBox() |
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{ |
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DefaultStyleKeyProperty.OverrideMetadata(typeof(TokenizedTextBox), new FrameworkPropertyMetadata(typeof(TokenizedTextBox))); |
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} |
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public TokenizedTextBox() |
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{ |
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CommandBindings.Add(new CommandBinding(TokenizedTextBoxCommands.Delete, DeleteToken)); |
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} |
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#endregion //Constructors
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#region Base Class Overrides
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public override void OnApplyTemplate() |
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{ |
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base.OnApplyTemplate(); |
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if (_rtb != null) |
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_rtb.TextChanged -= OnTextChanged; |
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_rtb = GetTemplateChild("PART_ContentHost") as System.Windows.Controls.RichTextBox; |
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if (_rtb != null) |
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_rtb.TextChanged += OnTextChanged; |
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InitializeTokensFromText(); |
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} |
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#endregion //Base Class Overrides
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#region Event Handlers
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private void OnTextChanged(object sender, TextChangedEventArgs e) |
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{ |
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if (_surpressTextChangedEvent) |
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return; |
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var text = _rtb.CaretPosition.GetTextInRun(LogicalDirection.Backward); |
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var token = ResolveToken(text); |
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if (token != null) |
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{ |
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ReplaceTextWithToken(text.Trim(), token); |
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} |
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} |
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#endregion //Event Handlers
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#region Methods
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private void InitializeTokensFromText() |
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{ |
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if (!String.IsNullOrEmpty(Text)) |
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{ |
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string[] tokens = Text.Split(new string[] { TokenDelimiter }, StringSplitOptions.RemoveEmptyEntries); |
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foreach (string token in tokens) |
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{ |
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var para = _rtb.CaretPosition.Paragraph; |
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para.Inlines.Add(CreateTokenContainer(String.Format("{0}{1}", token, TokenDelimiter), ResolveTokenFromItemsSource(token))); |
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} |
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} |
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} |
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private object ResolveToken(string text) |
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{ |
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if (text.EndsWith(TokenDelimiter)) |
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return ResolveTokenFromItemsSource(text.Substring(0, text.Length - 1).Trim()); |
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return null; |
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} |
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private object ResolveTokenBySearchMemberPath(string searchText) |
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{ |
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if (ItemsSource != null) |
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{ |
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foreach (object item in ItemsSource) |
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{ |
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var property = item.GetType().GetProperty(SearchMemberPath); |
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if (property != null) |
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{ |
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var value = property.GetValue(item, null); |
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if (searchText.Equals(value.ToString(), StringComparison.InvariantCultureIgnoreCase)) |
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{ |
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return item; |
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} |
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} |
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} |
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} |
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return searchText; |
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} |
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private object ResolveTokenFromItemsSource(string tokenKey) |
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{ |
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if (ItemsSource != null) |
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{ |
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foreach (object item in ItemsSource) |
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{ |
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var property = item.GetType().GetProperty(ValueMemberPath); |
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if (property != null) |
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{ |
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var value = property.GetValue(item, null); |
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if (tokenKey.Equals(value.ToString(), StringComparison.InvariantCultureIgnoreCase)) |
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return item; |
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} |
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} |
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} |
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return tokenKey; |
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} |
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private void ReplaceTextWithToken(string inputText, object token) |
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{ |
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_surpressTextChangedEvent = true; |
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var para = _rtb.CaretPosition.Paragraph; |
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var matchedRun = para.Inlines.FirstOrDefault(inline => |
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{ |
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var run = inline as Run; |
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return (run != null && run.Text.EndsWith(inputText)); |
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}) as Run; |
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if (matchedRun != null) // Found a Run that matched the inputText
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{ |
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var tokenContainer = CreateTokenContainer(inputText, token); |
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para.Inlines.InsertBefore(matchedRun, tokenContainer); |
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// Remove only if the Text in the Run is the same as inputText, else split up
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if (matchedRun.Text == inputText) |
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{ |
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para.Inlines.Remove(matchedRun); |
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} |
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else // Split up
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{ |
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var index = matchedRun.Text.IndexOf(inputText) + inputText.Length; |
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var tailEnd = new Run(matchedRun.Text.Substring(index)); |
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para.Inlines.InsertAfter(matchedRun, tailEnd); |
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para.Inlines.Remove(matchedRun); |
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} |
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//now append the Text
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SetTextInternal(Text + inputText); |
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} |
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_surpressTextChangedEvent = false; |
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} |
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private InlineUIContainer CreateTokenContainer(string tokenKey, object token) |
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{ |
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return new InlineUIContainer(CreateTokenItem(tokenKey, token)) { BaselineAlignment = BaselineAlignment.Center }; |
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} |
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private TokenItem CreateTokenItem(string tokenKey, object token) |
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{ |
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var tokenItem = new TokenItem(); |
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tokenItem.TokenKey = tokenKey; |
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tokenItem.Content = token; |
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tokenItem.ContentTemplate = TokenTemplate; |
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if (TokenTemplate == null) |
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{ |
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//if no template was supplied let's try to get a value from the object using the DisplayMemberPath
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if (!String.IsNullOrEmpty(DisplayMemberPath)) |
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{ |
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var property = token.GetType().GetProperty(DisplayMemberPath); |
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if (property != null) |
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{ |
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var value = property.GetValue(token, null); |
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if (value != null) |
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tokenItem.Content = value; |
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} |
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} |
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} |
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return tokenItem; |
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} |
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private void DeleteToken(object sender, ExecutedRoutedEventArgs e) |
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{ |
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var para = _rtb.CaretPosition.Paragraph; |
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Inline inlineToRemove = para.Inlines.SingleOrDefault(x => ((x as InlineUIContainer).Child as TokenItem).TokenKey.Equals(e.Parameter)); |
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if (inlineToRemove != null) |
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para.Inlines.Remove(inlineToRemove); |
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//update Text to remove delimited value
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SetTextInternal(Text.Replace(e.Parameter.ToString(), "")); |
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} |
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private void SetTextInternal(string text) |
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{ |
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_surpressTextChanged = true; |
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Text = text; |
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_surpressTextChanged = false; |
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} |
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#endregion //Methods
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} |
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} |
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using System.Windows.Input; |
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namespace Microsoft.Windows.Controls |
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{ |
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public static class TokenizedTextBoxCommands |
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{ |
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private static RoutedCommand _deleteCommand = new RoutedCommand(); |
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public static RoutedCommand Delete |
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{ |
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get { return _deleteCommand; } |
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} |
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} |
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} |
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<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" |
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" |
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xmlns:local="clr-namespace:Microsoft.Windows.Controls" > |
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<Style TargetType="{x:Type local:TokenItem}"> |
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<Setter Property="Background" Value="#F3F7FD" /> |
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<Setter Property="BorderBrush" Value="#BBD8FB" /> |
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<Setter Property="BorderThickness" Value="1" /> |
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<Setter Property="Cursor" Value="Arrow" /> |
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<Setter Property="Padding" Value="5,1,5,1" /> |
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<Setter Property="Margin" Value="1,0" /> |
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<Setter Property="Template"> |
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<Setter.Value> |
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<ControlTemplate TargetType="{x:Type local:TokenItem}"> |
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<Border Background="{TemplateBinding Background}" |
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BorderBrush="{TemplateBinding BorderBrush}" |
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BorderThickness="{TemplateBinding BorderThickness}" |
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Padding="{TemplateBinding Padding}" |
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Margin="{TemplateBinding Margin}"> |
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<StackPanel Orientation="Horizontal" Margin="1"> |
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<ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" /> |
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<Button Margin="3,0,0,0" Cursor="Hand" Command="local:TokenizedTextBoxCommands.Delete" CommandParameter="{TemplateBinding TokenKey}" > |
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<Button.Template> |
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<ControlTemplate TargetType="Button"> |
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<ContentPresenter /> |
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</ControlTemplate> |
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</Button.Template> |
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<Image Source="/WPFToolkit.Extended;component/TokenizedTextBox/Images/delete8.png" Width="8" Height="8" /> |
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</Button> |
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</StackPanel> |
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</Border> |
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</ControlTemplate> |
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</Setter.Value> |
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</Setter> |
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</Style> |
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<Style TargetType="{x:Type local:TokenizedTextBox}" > |
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<Setter Property="Template"> |
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<Setter.Value> |
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<ControlTemplate TargetType="{x:Type local:TokenizedTextBox}"> |
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<Border x:Name="Bd" Background="{TemplateBinding Background}" |
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BorderBrush="{TemplateBinding BorderBrush}" |
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BorderThickness="{TemplateBinding BorderThickness}"> |
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<Grid> |
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<RichTextBox x:Name="PART_ContentHost" AcceptsReturn="False" IsDocumentEnabled="True" Padding="-3,0,0,0" /> |
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<!--<Popup> |
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<Grid Background="White"> |
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<ItemsPresenter /> |
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</Grid> |
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</Popup>--> |
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</Grid> |
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</Border> |
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</ControlTemplate> |
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</Setter.Value> |
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</Setter> |
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</Style> |
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</ResourceDictionary> |
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