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TextEditor: Add utility to keep a range of text within a line

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This commit is contained in:
Kyle Lanmon 2022-11-02 23:23:00 -05:00 • committed by Andrew Kaster
parent 31290c8527
commit 9aa00a6d70
2 changed files with 14 additions and 0 deletions
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13
Userland/Libraries/LibGUI/TextDocument.cpp
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@ -246,6 +246,19 @@ void TextDocumentLine::remove_range(TextDocument& document, size_t start, size_t
document.update_views({});
}
void TextDocumentLine::keep_range(TextDocument& document, size_t start_index, size_t length)
{
VERIFY(start_index + length < m_text.size());
Vector<u32> new_data;
new_data.ensure_capacity(m_text.size());
for (size_t i = start_index; i <= (start_index + length); i++)
new_data.append(m_text[i]);
m_text = move(new_data);
document.update_views({});
}
void TextDocumentLine::truncate(TextDocument& document, size_t length)
{
m_text.resize(length);

1
Userland/Libraries/LibGUI/TextDocument.h
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@ -179,6 +179,7 @@ public:
void truncate(TextDocument&, size_t length);
void clear(TextDocument&);
void remove_range(TextDocument&, size_t start, size_t length);
void keep_range(TextDocument&, size_t start_index, size_t end_index);
size_t first_non_whitespace_column() const;
Optional<size_t> last_non_whitespace_column() const;