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Code Issues Projects Releases Wiki Activity

removed lazy evaluation of the ScrollViewer property.

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This commit is contained in:
morkt 2015-05-13 23:24:50 +04:00
parent 66ba1c5ccf
commit f7b3fa522c
1 changed files with 12 additions and 21 deletions
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33
TextViewer.xaml.cs
View File

@ -39,12 +39,10 @@ namespace JustView
/// </summary>
public partial class TextViewer : FlowDocumentScrollViewer
{
Lazy<ScrollViewer> m_scroll_viewer;
Lazy<double> m_default_width;
public TextViewer ()
{
m_scroll_viewer = new Lazy<ScrollViewer> (FindScrollViewer);
m_default_width = new Lazy<double> (() => GetFixedWidth (80));
InitializeComponent();
DefaultZoom = 100;
@ -56,7 +54,7 @@ namespace JustView
Input = null;
}
public ScrollViewer ScrollViewer { get { return m_scroll_viewer.Value; } }
public ScrollViewer ScrollViewer { get { return FindScrollViewer(); } }
public double DefaultWidth { get { return m_default_width.Value; } }
public double DefaultZoom { get; private set; }
public Stream Input { get; set; }
@ -69,7 +67,8 @@ namespace JustView
set
{
m_word_wrap = value;
ApplyWordWrap (value);
if (Input != null)
ApplyWordWrap (value);
}
}
@ -189,23 +188,15 @@ namespace JustView
public void ApplyWordWrap (bool word_wrap)
{
if (word_wrap)
var scroll = this.ScrollViewer;
if (word_wrap && scroll != null)
{
var scroll = this.ScrollViewer;
if (scroll != null)
{
this.Document.PageWidth = scroll.ViewportWidth;
var width_binding = new Binding ("ViewportWidth");
width_binding.Source = scroll;
width_binding.Mode = BindingMode.OneWay;
width_binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
BindingOperations.SetBinding (this.Document, FlowDocument.PageWidthProperty, width_binding);
}
else
{
BindingOperations.ClearBinding (this.Document, FlowDocument.PageWidthProperty);
this.Document.PageWidth = this.ActualWidth;
}
this.Document.PageWidth = scroll.ViewportWidth;
var width_binding = new Binding ("ViewportWidth");
width_binding.Source = scroll;
width_binding.Mode = BindingMode.OneWay;
width_binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
BindingOperations.SetBinding (this.Document, FlowDocument.PageWidthProperty, width_binding);
}
else
{
@ -214,7 +205,7 @@ namespace JustView
}
}
public ScrollViewer FindScrollViewer ()
private ScrollViewer FindScrollViewer ()
{
if (VisualTreeHelper.GetChildrenCount (this) == 0)
return null;