// Token: 0x06006FB2 RID: 28594 RVA: 0x00201C3C File Offset: 0x001FFE3C
internal override bool Validate(ITextPointer position)
{
FlowDocumentView flowDocumentView = this._owner as FlowDocumentView;
bool result;
if (flowDocumentView == null || flowDocumentView.Document == null)
{
result = base.Validate(position);
}
else
{
if (this.Validate())
{
BackgroundFormatInfo backgroundFormatInfo = flowDocumentView.Document.StructuralCache.BackgroundFormatInfo;
FlowDocumentFormatter bottomlessFormatter = flowDocumentView.Document.BottomlessFormatter;
int num = -1;
while (this.IsValid && !this.Contains(position))
{
backgroundFormatInfo.BackgroundFormat(bottomlessFormatter, true);
this._owner.UpdateLayout();
if (backgroundFormatInfo.CPInterrupted <= num)
{
break;
}
num = backgroundFormatInfo.CPInterrupted;
}
}
result = (this.IsValid && this.Contains(position));
}
return(result);
}
// Token: 0x06006FB3 RID: 28595 RVA: 0x00201CE0 File Offset: 0x001FFEE0
internal override void ThrottleBackgroundTasksForUserInput()
{
FlowDocumentView flowDocumentView = this._owner as FlowDocumentView;
if (flowDocumentView != null && flowDocumentView.Document != null)
{
flowDocumentView.Document.StructuralCache.ThrottleBackgroundFormatting();
}
}
/// <summary>
/// <see cref="ITextView.ThrottleBackgroundTasksForUserInput"/>
/// </summary>
internal override void ThrottleBackgroundTasksForUserInput()
{
FlowDocumentView owner = _owner as FlowDocumentView;
if (owner != null && owner.Document != null)
{
owner.Document.StructuralCache.ThrottleBackgroundFormatting();
}
}
// Token: 0x06006FA2 RID: 28578 RVA: 0x00201714 File Offset: 0x001FF914
internal DocumentPageTextView(FlowDocumentView owner, ITextContainer textContainer)
{
Invariant.Assert(owner != null && textContainer != null);
this._owner = owner;
this._page = owner.DocumentPage;
this._textContainer = textContainer;
if (this._page is IServiceProvider)
{
this._pageTextView = (((IServiceProvider)this._page).GetService(typeof(ITextView)) as ITextView);
}
if (this._pageTextView != null)
{
this._pageTextView.Updated += this.HandlePageTextViewUpdated;
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="owner">
/// Root of layout structure visualizing content of a page.
/// </param>
/// <param name="textContainer">
/// TextContainer representing content.
/// </param>
internal DocumentPageTextView(FlowDocumentView owner, ITextContainer textContainer)
{
Invariant.Assert(owner != null && textContainer != null);
_owner = owner;
_page = owner.DocumentPage;
_textContainer = textContainer;
// Retrive inner TextView
if (_page is IServiceProvider)
{
_pageTextView = ((IServiceProvider)_page).GetService(typeof(ITextView)) as ITextView;
}
if (_pageTextView != null)
{
_pageTextView.Updated += new EventHandler(HandlePageTextViewUpdated);
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="owner">
/// Root of layout structure visualizing content of a page.
/// </param>
/// <param name="textContainer">
/// TextContainer representing content.
/// </param>
internal DocumentPageTextView(FlowDocumentView owner, ITextContainer textContainer)
{
Invariant.Assert(owner != null && textContainer != null);
_owner = owner;
_page = owner.DocumentPage;
_textContainer = textContainer;
// Retrive inner TextView
if (_page is IServiceProvider)
{
_pageTextView = ((IServiceProvider)_page).GetService(typeof(ITextView)) as ITextView;
}
if (_pageTextView != null)
{
_pageTextView.Updated += new EventHandler(HandlePageTextViewUpdated);
}
}
/// <summary>
/// <see cref="ITextView.Validate(ITextPointer)"/>
/// </summary>
internal override bool Validate(ITextPointer position)
{
FlowDocumentView owner = _owner as FlowDocumentView;
bool isValid;
if (owner == null || owner.Document == null)
{
isValid = base.Validate(position);
}
else
{
if (Validate())
{
BackgroundFormatInfo backgroundFormatInfo = owner.Document.StructuralCache.BackgroundFormatInfo;
FlowDocumentFormatter formatter = owner.Document.BottomlessFormatter;
int lastCPInterrupted = -1;
while (this.IsValid && !Contains(position))
{
backgroundFormatInfo.BackgroundFormat(formatter, true /* ignoreThrottle */);
_owner.UpdateLayout(); // May invalidate the view.
// Break if background layout is not progressing.
// There are some edge cases where Validate() == true, but background
// layout will not progress (such as collapsed text in a tree view).
if (backgroundFormatInfo.CPInterrupted <= lastCPInterrupted)
{
// CPInterrupted is reset to -1 when background layout finishes, so
// check explicitly below to see if the position is valid or not.
break;
}
lastCPInterrupted = backgroundFormatInfo.CPInterrupted;
}
}
isValid = this.IsValid && Contains(position);
}
return(isValid);
}
// Allocates the initial render scope for this control.
internal override FrameworkElement CreateRenderScope()
{
FlowDocumentView renderScope = new FlowDocumentView();
renderScope.Document = this.Document;
// Set a margin so that the BiDi Or Italic caret has room to render at the edges of content.
// Otherwise, anti-aliasing or italic causes the caret to be partially clipped.
renderScope.Document.PagePadding = new Thickness(CaretElement.CaretPaddingWidth, 0, CaretElement.CaretPaddingWidth, 0);
// We want current style to ignore all properties from theme style for renderScope.
renderScope.OverridesDefaultStyle = true;
return renderScope;
}
