/// <summary>
/// Calls transformLine on all lines in the selected range.
/// transformLine needs to handle read-only segments!
/// </summary>
private static void TransformSelectedLines(Action <TextArea, DocumentLine> transformLine, object target,
ExecutedRoutedEventArgs args, DefaultSegmentType defaultSegmentType)
{
var textArea = GetTextArea(target);
if (textArea?.Document != null)
{
using (textArea.Document.RunUpdate())
{
DocumentLine start, end;
if (textArea.Selection.IsEmpty)
{
if (defaultSegmentType == DefaultSegmentType.CurrentLine)
{
start = end = textArea.Document.GetLineByNumber(textArea.Caret.Line);
}
else if (defaultSegmentType == DefaultSegmentType.WholeDocument)
{
start = textArea.Document.Lines.First();
end = textArea.Document.Lines.Last();
}
else
{
start = end = null;
}
}
else
{
var segment = textArea.Selection.SurroundingSegment;
start = textArea.Document.GetLineByOffset(segment.Offset);
end = textArea.Document.GetLineByOffset(segment.EndOffset);
// don't include the last line if no characters on it are selected
if (start != end && end.Offset == segment.EndOffset)
{
end = end.PreviousLine;
}
}
if (start != null)
{
transformLine(textArea, start);
while (start != end)
{
start = start.NextLine;
transformLine(textArea, start);
}
}
}
textArea.Caret.BringCaretToView();
args.Handled = true;
}
}
/// <summary>
/// Calls transformLine on all writable segment in the selected range.
/// </summary>
private static void TransformSelectedSegments(Action <TextArea, ISegment> transformSegment, object target,
ExecutedRoutedEventArgs args, DefaultSegmentType defaultSegmentType)
{
var textArea = GetTextArea(target);
if (textArea?.Document != null)
{
using (textArea.Document.RunUpdate())
{
IEnumerable <ISegment> segments;
if (textArea.Selection.IsEmpty)
{
if (defaultSegmentType == DefaultSegmentType.CurrentLine)
{
segments = new ISegment[] { textArea.Document.GetLineByNumber(textArea.Caret.Line) };
}
else if (defaultSegmentType == DefaultSegmentType.WholeDocument)
{
segments = textArea.Document.Lines;
}
else
{
segments = null;
}
}
else
{
segments = textArea.Selection.Segments;
}
if (segments != null)
{
foreach (var segment in segments.Reverse())
{
foreach (var writableSegment in textArea.GetDeletableSegments(segment).Reverse())
{
transformSegment(textArea, writableSegment);
}
}
}
}
textArea.Caret.BringCaretToView();
args.Handled = true;
}
}
/// <summary>
/// Calls transformLine on all lines in the selected range.
/// transformLine needs to handle read-only segments!
/// </summary>
static void TransformSelectedLines(Action <TextArea, DocumentLine> transformLine, object target, ExecutedRoutedEventArgs args, DefaultSegmentType defaultSegmentType)
{
TextArea textArea = GetTextArea(target);
if (textArea != null && textArea.Document != null)
{
using (textArea.Document.RunUpdate()) {
DocumentLine start, end;
if (textArea.Selection.IsEmpty)
{
if (defaultSegmentType == DefaultSegmentType.CurrentLine)
{
start = end = textArea.Document.GetLineByNumber(textArea.Caret.Line);
}
else if (defaultSegmentType == DefaultSegmentType.WholeDocument)
{
start = textArea.Document.Lines.First();
end = textArea.Document.Lines.Last();
}
else
{
start = end = null;
}
}
else
{
start = textArea.Document.GetLineByOffset(textArea.Selection.SurroundingSegment.Offset);
end = textArea.Document.GetLineByOffset(textArea.Selection.SurroundingSegment.EndOffset);
}
if (start != null)
{
transformLine(textArea, start);
while (start != end)
{
start = start.NextLine;
transformLine(textArea, start);
}
}
}
textArea.Caret.BringCaretToView();
args.Handled = true;
}
}
/// <summary>
/// Calls transformLine on all writable segment in the selected range.
/// </summary>
static void TransformSelectedSegments(Action<TextArea, ISegment> transformSegment, object target, ExecutedRoutedEventArgs args, DefaultSegmentType defaultSegmentType)
{
TextArea textArea = GetTextArea(target);
if (textArea != null && textArea.Document != null) {
using (textArea.Document.RunUpdate()) {
IEnumerable<ISegment> segments;
if (textArea.Selection.IsEmpty) {
if (defaultSegmentType == DefaultSegmentType.CurrentLine) {
segments = new ISegment[] { textArea.Document.GetLineByNumber(textArea.Caret.Line) };
} else if (defaultSegmentType == DefaultSegmentType.WholeDocument) {
segments = textArea.Document.Lines.Cast<ISegment>();
} else {
segments = null;
}
} else {
segments = textArea.Selection.Segments;
}
if (segments != null) {
foreach (ISegment segment in segments.Reverse()) {
foreach (ISegment writableSegment in textArea.GetDeletableSegments(segment).Reverse()) {
transformSegment(textArea, writableSegment);
}
}
}
}
textArea.Caret.BringCaretToView();
args.Handled = true;
}
}
/// <summary>
/// Calls transformLine on all lines in the selected range.
/// transformLine needs to handle read-only segments!
/// </summary>
static void TransformSelectedLines(Action<TextArea, DocumentLine> transformLine, object target, ExecutedRoutedEventArgs args, DefaultSegmentType defaultSegmentType)
{
TextArea textArea = GetTextArea(target);
if (textArea != null && textArea.Document != null) {
using (textArea.Document.RunUpdate()) {
DocumentLine start, end;
if (textArea.Selection.IsEmpty) {
if (defaultSegmentType == DefaultSegmentType.CurrentLine) {
start = end = textArea.Document.GetLineByNumber(textArea.Caret.Line);
} else if (defaultSegmentType == DefaultSegmentType.WholeDocument) {
start = textArea.Document.Lines.First();
end = textArea.Document.Lines.Last();
} else {
start = end = null;
}
} else {
start = textArea.Document.GetLineByOffset(textArea.Selection.SurroundingSegment.Offset);
end = textArea.Document.GetLineByOffset(textArea.Selection.SurroundingSegment.EndOffset);
}
if (start != null) {
transformLine(textArea, start);
while (start != end) {
start = start.NextLine;
transformLine(textArea, start);
}
}
}
textArea.Caret.BringCaretToView();
args.Handled = true;
}
}
