/////////////////////////////////////////////////////////////////////////////////////////////////////
// NON-PUBLIC PROCEDURES
/////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Adds an adornment.
/// </summary>
/// <param name="offset">The offset.</param>
private void AddAdornment(int offset)
{
// Get the tagger that was created by the language and has been persisted in the document's properties
// while the language is active on the document
IntraLineViewportTagger tagger = null;
if (editor.ActiveView.Properties.TryGetValue(typeof(IntraLineViewportTagger), out tagger))
{
// Create a version range
ITextVersionRange versionRange = new TextSnapshotRange(editor.ActiveView.CurrentSnapshot, offset).ToVersionRange(TextRangeTrackingModes.Default);
// Create a tag that will be used to reserve space between view lines...
// Since the tags in this sample are persisted in a collection while active,
// we can use the tag itself as the key... the key is used to retrieve
// the bounds of the spacer later on so adornments can be rendered in it, thus is must be unique
IntraLineViewportTag tag = new IntraLineViewportTag();
tag.UpdateBottomMargin(editor.ActiveView);
tag.Key = tag;
// Add the tag to the tagger
tagger.Add(new TagVersionRange <IIntraLineSpacerTag>(versionRange, tag));
}
// Focus the editor
editor.Focus();
}
/////////////////////////////////////////////////////////////////////////////////////////////////////
// NON-PUBLIC PROCEDURES
/////////////////////////////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Occurs when a tab is closing.
/// </summary>
/// <param name="sender">The sender of the event.</param>
/// <param name="e">A <see cref="AdvancedTabItemEventArgs"/> that contains the event data.</param>
private void OnTabControlTabClosing(object sender, AdvancedTabItemEventArgs e)
{
var view = VisualTreeHelperExtended.GetAncestor <EditorView>(this);
if (view == null)
{
return;
}
var tag = this.Tag as IntraLineViewportTag;
if (tag == null)
{
return;
}
// Remove the tag
IntraLineViewportTagger tagger = null;
if (view.Properties.TryGetValue(typeof(IntraLineViewportTagger), out tagger))
{
tagger.Remove(tag);
}
}
