// Token: 0x06003525 RID: 13605 RVA: 0x000F0C7C File Offset: 0x000EEE7C
private static void OnTextPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
Run run = (Run)d;
if (run._changeEventNestingCount > 0)
{
return;
}
Invariant.Assert(!e.NewEntry.IsDeferredReference);
string text = (string)e.NewValue;
if (text == null)
{
text = string.Empty;
}
run._changeEventNestingCount++;
try
{
TextContainer textContainer = run.TextContainer;
textContainer.BeginChange();
try
{
TextPointer contentStart = run.ContentStart;
if (!run.IsEmpty)
{
textContainer.DeleteContentInternal(contentStart, run.ContentEnd);
}
contentStart.InsertTextInRun(text);
}
finally
{
textContainer.EndChange();
}
}
finally
{
run._changeEventNestingCount--;
}
FlowDocument flowDocument = run.TextContainer.Parent as FlowDocument;
if (flowDocument != null)
{
RichTextBox richTextBox = flowDocument.Parent as RichTextBox;
if (richTextBox != null && run.HasExpression(run.LookupEntry(Run.TextProperty.GlobalIndex), Run.TextProperty))
{
UndoManager undoManager = richTextBox.TextEditor._GetUndoManager();
if (undoManager != null && undoManager.IsEnabled)
{
undoManager.Clear();
}
}
}
}
/// <summary>Clears all items from the collection.</summary>
// Token: 0x06003979 RID: 14713 RVA: 0x001048F8 File Offset: 0x00102AF8
public void Clear()
{
TextContainer textContainer = this.TextContainer;
textContainer.BeginChange();
try
{
textContainer.DeleteContentInternal(this.ContentStart, this.ContentEnd);
}
finally
{
textContainer.EndChange();
}
}
/// <summary>
/// </summary>
public void Clear()
{
// Note: We need to remember the textcontainer for any delete operations in this collection.
// This is important for the case when the owner of the collection is a sibling member.
// In a scenario where you remove the owner itself from the collection,
// the owner belongs to another tree after the reposition.
TextContainer textContainer = this.TextContainer;
textContainer.BeginChange();
try
{
textContainer.DeleteContentInternal(this.ContentStart, this.ContentEnd);
}
finally
{
textContainer.EndChange();
}
}
private void UpdateText(string text)
{
if (text == null)
{
text = string.Empty;
}
_accessKeyLocated = false;
_accessKey = null;
TextContainer.BeginChange();
try
{
TextContainer.DeleteContentInternal((TextPointer)TextContainer.Start, TextContainer.End);
Run run = Inline.CreateImplicitRun(this);
((TextPointer)TextContainer.End).InsertTextElement(run);
run.Text = text;
}
finally
{
TextContainer.EndChange();
}
}
//-------------------------------------------------------------------
//
// Private Methods
//
//-------------------------------------------------------------------
#region Private Methods
/// <summary>
/// Changed handler for the Text property.
/// </summary>
/// <param name="d">The source of the event.</param>
/// <param name="e">A PropertyChangedEventArgs that contains the event data.</param>
/// <remarks>
/// We can't assume the value is a string here -- it may be a DeferredRunTextReference.
/// </remarks>
private static void OnTextPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
Run run = (Run)d;
// Return if this update was caused by a TextContainer change or a reentrant change.
if (run._changeEventNestingCount > 0)
{
return;
}
Invariant.Assert(!e.NewEntry.IsDeferredReference);
// CoerceText will have already converted null -> String.Empty, but our default
// CoerceValueCallback could be overridden by a derived class. So check again here.
string newText = (string)e.NewValue;
if (newText == null)
{
newText = String.Empty;
}
// Run.TextProperty has changed. Update the backing store.
run._changeEventNestingCount++;
try
{
TextContainer textContainer = run.TextContainer;
textContainer.BeginChange();
try
{
TextPointer contentStart = run.ContentStart;
if (!run.IsEmpty)
{
textContainer.DeleteContentInternal(contentStart, run.ContentEnd);
}
contentStart.InsertTextInRun(newText);
}
finally
{
textContainer.EndChange();
}
}
finally
{
run._changeEventNestingCount--;
}
// We need to clear undo stack if we are in a RichTextBox and the value comes from
// data binding or some other expression.
FlowDocument document = run.TextContainer.Parent as FlowDocument;
if (document != null)
{
RichTextBox rtb = document.Parent as RichTextBox;
if (rtb != null && run.HasExpression(run.LookupEntry(Run.TextProperty.GlobalIndex), Run.TextProperty))
{
UndoManager undoManager = rtb.TextEditor._GetUndoManager();
if (undoManager != null && undoManager.IsEnabled)
{
undoManager.Clear();
}
}
}
}
