private bool TryGetPath(out string path)
{
int position = TextView.Caret.Position.BufferPosition.Position;
path = null;
ElementNode element = null;
AttributeNode attr = null;
_tree.GetPositionElement(position, out element, out attr);
if (element == null)
{
return(false);
}
attr = element.GetAttribute("src") ?? element.GetAttribute("href");
if (attr != null)
{
path = attr.Value;
return(true);
}
return(false);
}
protected override bool Execute(VSConstants.VSStd2KCmdID commandId, uint nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
{
if (_tree == null || _broker.IsCompletionActive(TextView) || !IsValidTextBuffer() || !WESettings.Instance.Html.EnableEnterFormat)
{
return(false);
}
int position = TextView.Caret.Position.BufferPosition.Position;
SnapshotPoint point = new SnapshotPoint(TextView.TextBuffer.CurrentSnapshot, position);
IWpfTextViewLine line = TextView.GetTextViewLineContainingBufferPosition(point);
ElementNode element = null;
AttributeNode attr = null;
_tree.GetPositionElement(position, out element, out attr);
if (element == null ||
_tree.IsDirty ||
element.Parent == null ||
element.StartTag.Contains(position) ||
line.End.Position == position || // caret at end of line (TODO: add ignore whitespace logic)
TextView.TextBuffer.CurrentSnapshot.GetText(element.InnerRange.Start, element.InnerRange.Length).Trim().Length == 0)
{
return(false);
}
UpdateTextBuffer(element);
return(false);
}
private bool TryGetClassName(out string className)
{
int position = TextView.Caret.Position.BufferPosition.Position;
className = null;
ElementNode element = null;
AttributeNode attr = null;
_tree.GetPositionElement(position, out element, out attr);
if (attr == null || attr.Name != "class")
{
return(false);
}
int beginning = position - attr.ValueRangeUnquoted.Start;
int start = attr.Value.LastIndexOf(' ', beginning) + 1;
int length = attr.Value.IndexOf(' ', start) - start;
if (length < 0)
{
length = attr.ValueRangeUnquoted.Length - start;
}
className = attr.Value.Substring(start, length);
return(true);
}
private ElementNode NodeAtCaret(HtmlEditorTree tree)
{
int start = _view.Caret.Position.BufferPosition.Position;
ElementNode tag = null;
AttributeNode attr = null;
tree.GetPositionElement(start, out tag, out attr);
return(tag);
}
/// <summary>
/// Finds a single property value at a given position in the tree.
/// </summary>
/// <param name="buffer">Any HTML editor tree</param>
/// <param name="position">The position in the buffer</param>
/// <param name="attributeNames">One or more HTML attribute names, such as 'class', 'id', 'src' etc.</param>
/// <returns>A single value matching the position in the tree</returns>
public static string GetSinglePropertyValue(HtmlEditorTree tree, int position, params string[] attributeNames)
{
ElementNode element = null;
AttributeNode attr = null;
tree.GetPositionElement(position, out element, out attr);
if (attr == null || !attributeNames.Contains(attr.Name, StringComparer.OrdinalIgnoreCase))
return null;
int beginning = position - attr.ValueRangeUnquoted.Start;
int start = attr.Value.LastIndexOf(' ', beginning) + 1;
int length = attr.Value.IndexOf(' ', start) - start;
if (length < 0)
length = attr.ValueRangeUnquoted.Length - start;
return attr.Value.Substring(start, length);
}
public void AugmentQuickInfoSession(IQuickInfoSession session, IList <object> qiContent, out ITrackingSpan applicableToSpan)
{
applicableToSpan = null;
SnapshotPoint?point = session.GetTriggerPoint(session.TextView.TextBuffer.CurrentSnapshot);
if (!point.HasValue)
{
return;
}
HtmlEditorTree tree = HtmlEditorDocument.TryFromTextView(session.TextView).HtmlEditorTree;
if (tree == null)
{
return;
}
ElementNode node = null;
AttributeNode attr = null;
tree.GetPositionElement(point.Value.Position, out node, out attr);
if (node == null || (!node.Name.Equals("img", StringComparison.OrdinalIgnoreCase) && !node.Name.Equals("source", StringComparison.OrdinalIgnoreCase)))
{
return;
}
if (attr == null || !attr.Name.Equals("src", StringComparison.OrdinalIgnoreCase))
{
return;
}
string url = ImageQuickInfo.GetFullUrl(attr.Value, session.TextView.TextBuffer);
if (string.IsNullOrEmpty(url))
{
return;
}
applicableToSpan = session.TextView.TextBuffer.CurrentSnapshot.CreateTrackingSpan(point.Value.Position, 1, SpanTrackingMode.EdgeNegative);
ImageQuickInfo.AddImageContent(qiContent, url);
}
/// <summary>
/// Finds a single property value at a given position in the tree.
/// </summary>
/// <param name="buffer">Any HTML editor tree</param>
/// <param name="position">The position in the buffer</param>
/// <param name="attributeNames">One or more HTML attribute names, such as 'class', 'id', 'src' etc.</param>
/// <returns>A single value matching the position in the tree</returns>
public static string GetSinglePropertyValue(HtmlEditorTree tree, int position, params string[] attributeNames)
{
tree.GetPositionElement(position, out ElementNode element, out AttributeNode attr);
if (attr == null || !attributeNames.Contains(attr.Name, StringComparer.OrdinalIgnoreCase))
{
return(null);
}
int beginning = position - attr.ValueRangeUnquoted.Start;
int start = attr.Value.LastIndexOf(' ', beginning) + 1;
int length = attr.Value.IndexOf(' ', start) - start;
if (length < 0)
{
length = attr.ValueRangeUnquoted.Length - start;
}
return(attr.Value.Substring(start, length));
}
protected override bool Execute(uint commandId, uint nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
{
int position = TextView.Caret.Position.BufferPosition.Position;
SnapshotPoint point = new SnapshotPoint(TextView.TextBuffer.CurrentSnapshot, position);
IWpfTextViewLine line = TextView.GetTextViewLineContainingBufferPosition(point);
ElementNode element = null;
AttributeNode attr = null;
_tree.GetPositionElement(position, out element, out attr);
if (element == null ||
line.End.Position == position || // caret at end of line (TODO: add ignore whitespace logic)
TextView.TextBuffer.CurrentSnapshot.GetText(element.InnerRange.Start, element.InnerRange.Length).Trim().Length == 0)
{
return(false);
}
UpdateTextBuffer(element, position);
return(false);
}
public void AugmentQuickInfoSession(IQuickInfoSession session, IList <object> qiContent, out ITrackingSpan applicableToSpan)
{
applicableToSpan = null;
SnapshotPoint?point = session.GetTriggerPoint(session.TextView.TextBuffer.CurrentSnapshot);
if (!point.HasValue)
{
return;
}
HtmlEditorTree tree = HtmlEditorDocument.FromTextView(session.TextView).HtmlEditorTree;
ElementNode node = null;
AttributeNode attr = null;
tree.GetPositionElement(point.Value.Position, out node, out attr);
if (attr == null || (attr.Name != "href" && attr.Name != "src"))
{
return;
}
string url = GetFileName(attr.Value.Trim('\'', '"').TrimStart('~'));
if (!string.IsNullOrEmpty(url))
{
applicableToSpan = session.TextView.TextBuffer.CurrentSnapshot.CreateTrackingSpan(point.Value.Position, 1, SpanTrackingMode.EdgeNegative);
var image = CreateImage(url);
if (image != null && image.Source != null)
{
qiContent.Add(image);
qiContent.Add(Math.Round(image.Source.Width) + "x" + Math.Round(image.Source.Height));
}
}
}
private ElementNode NodeAtCaret(HtmlEditorTree tree)
{
int start = _view.Caret.Position.BufferPosition.Position;
ElementNode tag = null;
AttributeNode attr = null;
tree.GetPositionElement(start, out tag, out attr);
return tag;
}
