/// <summary>
/// Adds a term item to the the TermItem collection.
/// </summary>
/// <param name="termItem">The term item to add.</param>
public void AddTermItem(TermItem termItem)
{
this.termItems.Add(termItem);
termItem.SelectedChanged += new EventHandler(this.TermItem_SelectedChanged);
this.RaisePropertyChanged("IsEncodable");
this.RaisePropertyChanged("IsEncoded");
}
/// <summary>
/// Updates the collection of term items.
/// </summary>
/// <param name="e">Notify Collection Changed Event Args.</param>
protected override void OnItemsChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
base.OnItemsChanged(e);
this.termItems.Clear();
this.itemsByContainer.Clear();
this.containersByItem.Clear();
foreach (object item in this.Items)
{
TermItem termItem = new TermItem();
termItem.DataContext = item;
termItem.SetBinding(TermItem.StartIndexProperty, new System.Windows.Data.Binding(this.StartIndexMemberPath));
Binding lengthBinding = new Binding(this.LengthMemberPath);
lengthBinding.Mode = BindingMode.OneTime;
termItem.SetBinding(TermItem.LengthProperty, lengthBinding);
termItem.SetBinding(TermItem.IsSelectedProperty, new System.Windows.Data.Binding(this.IsSelectedMemberPath));
this.termItems.Add(termItem);
this.itemsByContainer.Add(termItem, item);
this.containersByItem.Add(item, termItem);
}
if (this.TermItemsCollectionChanged != null)
{
this.TermItemsCollectionChanged(this, EventArgs.Empty);
}
}
/// <summary>
/// Gets a term data object from a container.
/// </summary>
/// <param name="container">The TernItem container.</param>
/// <returns>A term data object.</returns>
public object GetItemFromContainer(TermItem container)
{
if (this.itemsByContainer.ContainsKey(container))
{
return(this.itemsByContainer[container]);
}
return(null);
}
/// <summary>
/// Focus highlights a specific term.
/// </summary>
/// <param name="term">The term data object.</param>
/// <param name="highlighted">Whether the term should appear highlighted.</param>
public void SetTermFocusHighlight(object term, bool highlighted)
{
TermItem termItem = this.termItemsControl.GetContainerFromItem(term);
if (termItem != null && termItem.StartIndex >= 0 && termItem.Length > 0)
{
for (int i = termItem.StartIndex; i < termItem.StartIndex + termItem.Length; i++)
{
this.textBoxItems[i].IsFocusHighlighted = highlighted;
this.decoratorItemsControl.SetContainerZIndex(this.textBoxItems[i], highlighted ? (i + 2) : 0);
}
}
}
/// <summary>
/// Updates the collection of term items.
/// </summary>
/// <param name="e">Notify Collection Changed Event Args.</param>
protected override void OnItemsChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
base.OnItemsChanged(e);
this.termItems.Clear();
this.itemsByContainer.Clear();
this.containersByItem.Clear();
foreach (object item in this.Items)
{
TermItem termItem = new TermItem();
termItem.DataContext = item;
termItem.SetBinding(TermItem.StartIndexProperty, new System.Windows.Data.Binding(this.StartIndexMemberPath));
Binding lengthBinding = new Binding(this.LengthMemberPath);
lengthBinding.Mode = BindingMode.OneTime;
termItem.SetBinding(TermItem.LengthProperty, lengthBinding);
termItem.SetBinding(TermItem.IsSelectedProperty, new System.Windows.Data.Binding(this.IsSelectedMemberPath));
this.termItems.Add(termItem);
this.itemsByContainer.Add(termItem, item);
this.containersByItem.Add(item, termItem);
}
if (this.TermItemsCollectionChanged != null)
{
this.TermItemsCollectionChanged(this, EventArgs.Empty);
}
}
/// <summary>
/// Gets a term data object from a container.
/// </summary>
/// <param name="container">The TernItem container.</param>
/// <returns>A term data object.</returns>
public object GetItemFromContainer(TermItem container)
{
if (this.itemsByContainer.ContainsKey(container))
{
return this.itemsByContainer[container];
}
return null;
}
/// <summary>
/// Handles the Changed event of the IsSelected control.
/// </summary>
/// <param name="dependencyObject">The term item.</param>
/// <param name="args">Dependency Property Changed Event Args.</param>
private static void IsSelected_Changed(DependencyObject dependencyObject, DependencyPropertyChangedEventArgs args)
{
TermItem termItem = (TermItem)dependencyObject;
termItem.UpdateSelectedChanged();
}
/// <summary>
/// Changes the text for a specific term.
/// <para>
/// This method uses the start index (from term item) to move through the decorator textbox
/// items, and update the text in the item to show the new text. If the new text is longer,
/// more text box items are inserted. If the new text is shorter, text box items are removed.
/// </para>
/// <para>
/// The text box text is then updated with the change, flagging that the change is a programmatic
/// change. And finally, each term item that comes after the changed item, has the start index
/// updated with its new start position.
/// </para>
/// </summary>
/// <param name="termContainer">The term container to update.</param>
internal void ChangeText(MatchingTermItemContainer termContainer)
{
if (termContainer != null)
{
TermItem termItem = this.termItemsControl.GetContainerFromItem(termContainer.DataContext);
if (termItem != null)
{
if (this.textBox != null)
{
this.programaticTextChangeCount++;
}
int count = 0;
bool mouseHighlighted = false;
bool focusHighlighted = false;
for (int i = termItem.StartIndex; i < Math.Min(termItem.StartIndex + termItem.Length, termItem.StartIndex + termContainer.SelectedItemText.Length); i++)
{
if (i == termItem.StartIndex)
{
focusHighlighted = this.textBoxItems[i].IsFocusHighlighted;
mouseHighlighted = this.textBoxItems[i].IsMouseHighlighted;
}
this.textBoxItems[i].Text = termContainer.SelectedItemText[count].ToString(CultureInfo.CurrentCulture);
count++;
}
if (termItem.Length < termContainer.SelectedItemText.Length)
{
if (termItem.Length > 1)
{
this.textBoxItems[termItem.StartIndex + termItem.Length - 1].ContainerPosition = ContainerPosition.Middle;
}
else
{
this.textBoxItems[termItem.StartIndex].ContainerPosition = ContainerPosition.Start;
}
for (int i = termItem.StartIndex + termItem.Length; i < termItem.StartIndex + termContainer.SelectedItemText.Length; i++)
{
DecoratorTextBoxItem textBoxItem = new DecoratorTextBoxItem(termContainer.SelectedItemText[i - termItem.StartIndex].ToString(CultureInfo.CurrentCulture));
if (i == termItem.StartIndex + termContainer.SelectedItemText.Length - 1)
{
textBoxItem.ContainerPosition = ContainerPosition.End;
}
else
{
textBoxItem.ContainerPosition = ContainerPosition.Middle;
}
textBoxItem.IsFocusHighlighted = focusHighlighted;
textBoxItem.IsMouseHighlighted = mouseHighlighted;
textBoxItem.AddTermItem(termItem);
this.textBoxItems.Insert(i, textBoxItem);
}
}
else if (termItem.Length > termContainer.SelectedItemText.Length)
{
for (int i = termItem.StartIndex + termContainer.SelectedItemText.Length; i < termItem.StartIndex + termItem.Length; i++)
{
this.textBoxItems.RemoveAt(termItem.StartIndex + termContainer.SelectedItemText.Length);
}
if (termContainer.SelectedItemText.Length > 1)
{
this.textBoxItems[termItem.StartIndex + termContainer.SelectedItemText.Length - 1].ContainerPosition = ContainerPosition.End;
}
else
{
this.textBoxItems[termItem.StartIndex].ContainerPosition = ContainerPosition.Only;
}
}
if (this.textBox != null)
{
string newText = this.textBox.Text.Remove(termItem.StartIndex, termItem.Length);
newText = newText.Insert(termItem.StartIndex, termContainer.SelectedItemText);
this.textBox.Text = newText;
}
foreach (TermItem item in this.termItemsControl.TermItems)
{
if (item.StartIndex > termItem.StartIndex)
{
item.StartIndex += termContainer.SelectedItemText.Length - termItem.Length;
}
}
termItem.Length = termContainer.SelectedItemText.Length;
}
}
}
