/// <summary>
/// Hock event handlers and restore editor states (if any) or defaults
/// when the control is fully loaded.
/// </summary>
/// <param name="obj"></param>
/// <param name="args"></param>
private void OnLoaded(object obj, RoutedEventArgs args)
{
try
{
// This adds a search panel into the edit
// It is available via Ctrl-F
SearchPanel.Install(this);
// Remove rounded corners from text selection
this.TextArea.SelectionCornerRadius = 0;
this.TextArea.SelectionBorder = null;
// Initialize Diff line background color rendering
_DiffBackgroundRenderer = new DiffLineBackgroundRenderer(this);
this.TextArea.TextView.BackgroundRenderers.Add(_DiffBackgroundRenderer);
// Customize display of line numbers using real lines (shown with a number)
// and imaginary lines (shown without a number)
// Switch off default line handler in AvalonEdit
ShowLineNumbers = false;
this.TextArea.LeftMargins.Clear();
var leftMargins = this.TextArea.LeftMargins;
// Configure and insert custom line number margin indicator
LineNumberMargin lineNumbers = new CustomLineNumberMargin(this);
Line line = (Line)DottedLineMargin.Create();
leftMargins.Insert(0, lineNumbers);
leftMargins.Insert(1, line);
var lineNumbersForeground = new Binding("LineNumbersForeground")
{
Source = this
};
line.SetBinding(Shape.StrokeProperty, lineNumbersForeground);
lineNumbers.SetBinding(Control.ForegroundProperty, lineNumbersForeground);
// Attach more event handlers
this.GotFocus += DiffView_GotFocus;
////this.Focus();
////this.ForceCursor = true;
// Restore cursor position for CTRL-TAB Support http://avalondock.codeplex.com/workitem/15079
this.ScrollToHorizontalOffset(this.EditorScrollOffsetX);
this.ScrollToVerticalOffset(this.EditorScrollOffsetY);
// Highlight current line in editor (even if editor is not focused) via themable dp-property
this.AdjustCurrentLineBackground();
this.TextArea.Caret.PositionChanged += Caret_PositionChanged;
}
catch
{
// catch this to make sure initialization can continue...
}
}
/// <summary>Updates the Custom Display of LineNumbers (inlcuding gaps) via binding through <see cref="ItemsSource"/></summary>
/// <param name="showCustomLineNumbers"></param>
private void DisplayCustomLineNumbers(bool showCustomLineNumbers)
{
// Check if current setup is different from request and return if this is already set
if (_currentShowCustomLineNumbers != null)
{
if (_currentShowCustomLineNumbers == showCustomLineNumbers)
{
return;
}
}
// Customize display of line numbers using real lines (shown with a number)
// and imaginary lines (shown without a number)
// Switch off default line handler in AvalonEdit
ShowLineNumbers = false;
this.TextArea.LeftMargins.Clear();
if (showCustomLineNumbers)
{
var leftMargins = this.TextArea.LeftMargins;
// Configure and insert custom line number margin indicator
LineNumberMargin lineNumbers = new CustomLineNumberMargin(this);
Line line = (Line)DottedLineMargin.Create();
leftMargins.Insert(0, lineNumbers);
leftMargins.Insert(1, line);
var lineNumbersForeground = new Binding("LineNumbersForeground")
{
Source = this
};
line.SetBinding(Shape.StrokeProperty, lineNumbersForeground);
lineNumbers.SetBinding(Control.ForegroundProperty, lineNumbersForeground);
}
_currentShowCustomLineNumbers = showCustomLineNumbers;
}
