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LibGUI: Unindent selected text on shift+tab press

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Selected text is unindented when Shift+Tab is pressed. Select text,
indent it with Tab, then unindent with Shift+Tab.
This commit is contained in:
huttongrabiel 2022-06-18 12:03:49 -07:00 • committed by Sam Atkins
parent 2fbaa7996c
commit 9369610bf4
4 changed files with 63 additions and 0 deletions
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29
Userland/Libraries/LibGUI/TextDocument.cpp
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@ -959,6 +959,35 @@ void IndentSelection::undo()
m_document.set_all_cursors(m_range.start());
}
UnindentSelection::UnindentSelection(TextDocument& document, size_t tab_width, TextRange const& range)
: TextDocumentUndoCommand(document)
, m_tab_width(tab_width)
, m_range(range)
{
}
void UnindentSelection::redo()
{
for (size_t i = m_range.start().line(); i <= m_range.end().line(); i++) {
if (m_document.line(i).leading_spaces() >= m_tab_width)
m_document.remove({ { i, 0 }, { i, m_tab_width } });
else
m_document.remove({ { i, 0 }, { i, m_document.line(i).leading_spaces() } });
}
m_document.set_all_cursors(m_range.start());
}
void UnindentSelection::undo()
{
auto const tab = String::repeated(' ', m_tab_width);
for (size_t i = m_range.start().line(); i <= m_range.end().line(); i++)
m_document.insert_at({ i, 0 }, tab, m_client);
m_document.set_all_cursors(m_range.start());
}
TextPosition TextDocument::insert_at(TextPosition const& position, StringView text, Client const* client)
{
TextPosition cursor = position;