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TextEditor: Add UndoCommands for commenting and uncommenting lines

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This commit is contained in:
Kyle Lanmon 2022-11-02 23:24:37 -05:00 • committed by Andrew Kaster
parent 9aa00a6d70
commit ad250dd484
2 changed files with 98 additions and 0 deletions
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72
Userland/Libraries/LibGUI/TextDocument.cpp
View file

@ -1011,6 +1011,78 @@ void UnindentSelection::undo()
m_document.set_all_cursors(m_range.start());
}
CommentSelection::CommentSelection(TextDocument& document, StringView prefix, StringView suffix, TextRange const& range)
: TextDocumentUndoCommand(document)
, m_prefix(prefix)
, m_suffix(suffix)
, m_range(range)
{
}
void CommentSelection::undo()
{
for (size_t i = m_range.start().line(); i <= m_range.end().line(); i++) {
if (m_document.line(i).is_empty())
continue;
auto line = m_document.line(i).to_utf8();
auto prefix_start = line.find(m_prefix).value_or(0);
m_document.line(i).keep_range(
m_document,
prefix_start + m_prefix.length(),
m_document.line(i).last_non_whitespace_column().value_or(line.length()) - prefix_start - m_prefix.length() - m_suffix.length());
}
m_document.set_all_cursors(m_range.start());
}
void CommentSelection::redo()
{
for (size_t i = m_range.start().line(); i <= m_range.end().line(); i++) {
if (m_document.line(i).is_empty())
continue;
m_document.insert_at({ i, 0 }, m_prefix, m_client);
for (auto const& b : m_suffix.bytes()) {
m_document.line(i).append(m_document, b);
}
}
m_document.set_all_cursors(m_range.start());
}
UncommentSelection::UncommentSelection(TextDocument& document, StringView prefix, StringView suffix, TextRange const& range)
: TextDocumentUndoCommand(document)
, m_prefix(prefix)
, m_suffix(suffix)
, m_range(range)
{
}
void UncommentSelection::undo()
{
for (size_t i = m_range.start().line(); i <= m_range.end().line(); i++) {
if (m_document.line(i).is_empty())
continue;
m_document.insert_at({ i, 0 }, m_prefix, m_client);
for (auto const& b : m_suffix.bytes()) {
m_document.line(i).append(m_document, b);
}
}
m_document.set_all_cursors(m_range.start());
}
void UncommentSelection::redo()
{
for (size_t i = m_range.start().line(); i <= m_range.end().line(); i++) {
if (m_document.line(i).is_empty())
continue;
auto line = m_document.line(i).to_utf8();
auto prefix_start = line.find(m_prefix).value_or(0);
m_document.line(i).keep_range(
m_document,
prefix_start + m_prefix.length(),
m_document.line(i).last_non_whitespace_column().value_or(line.length()) - prefix_start - m_prefix.length() - m_suffix.length());
}
m_document.set_all_cursors(m_range.start());
}
TextPosition TextDocument::insert_at(TextPosition const& position, StringView text, Client const* client)
{
TextPosition cursor = position;

26
Userland/Libraries/LibGUI/TextDocument.h
View file

@ -288,4 +288,30 @@ private:
TextRange m_range;
};
class CommentSelection : public TextDocumentUndoCommand {
public:
CommentSelection(TextDocument&, StringView, StringView, TextRange const&);
virtual void undo() override;
virtual void redo() override;
TextRange const& range() const { return m_range; }
private:
StringView m_prefix;
StringView m_suffix;
TextRange m_range;
};
class UncommentSelection : public TextDocumentUndoCommand {
public:
UncommentSelection(TextDocument&, StringView, StringView, TextRange const&);
virtual void undo() override;
virtual void redo() override;
TextRange const& range() const { return m_range; }
private:
StringView m_prefix;
StringView m_suffix;
TextRange m_range;
};
}