private void OnIsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
{
if ((bool)e.NewValue)
{
//Hook up to the various events we need to keep the caret margin current.
_scrollBar.Map.MappingChanged += OnMappingChanged;
_coloring = new BlockColoring(_formatMap, 1.0);
_coloring.Changed += this.OnColoringChanged;
_tagger = _factory.TagAggregatorFactoryService.CreateTagAggregator <IBlockTag>(_textView);
_tagger.BatchedTagsChanged += OnTagsChanged;
//Force the margin to be re-rendered since things might have changed while the margin was hidden.
this.InvalidateVisual();
}
else
{
_scrollBar.Map.MappingChanged -= OnMappingChanged;
_coloring.Changed -= this.OnColoringChanged;
_coloring.Dispose();
_coloring = null;
_tagger.BatchedTagsChanged -= OnTagsChanged;
_tagger.Dispose();
_tagger = null;
}
}
private bool UpdateShowAdornments(bool enabled)
{
enabled = enabled && (_view.VisualElement.IsVisible || _view.Roles.Contains("PRINTABLE")) && (_showAdornments || _showMethodSeparator);
if (_enabled != enabled)
{
_enabled = enabled;
if (enabled)
{
_coloring = new BlockColoring(_formatMap, 1.0);
_coloring.Changed += this.OnColoringChanged;
_view.LayoutChanged += OnLayoutChanged;
_blockTagger = _factory.TagAggregatorFactoryService.CreateTagAggregator <IBlockTag>(_view);
_blockTagger.BatchedTagsChanged += OnTagsChanged;
this.RedrawAllAdornments();
return(true);
}
else
{
_view.LayoutChanged -= OnLayoutChanged;
_coloring.Changed -= this.OnColoringChanged;
_coloring.Dispose();
_coloring = null;
_blockTagger.BatchedTagsChanged -= OnTagsChanged;
_blockTagger.Dispose();
_blockTagger = null;
_visibleBlocks.Clear();
_methodSeparators.Clear();
_layer.RemoveAllAdornments();
this.CloseTip();
}
}
return(false);
}