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FlagLines updates the lines in the option according to buffer modifications

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This commit is contained in:
Maxime Coste 2013-03-31 13:52:15 +02:00
parent 22c34b79f6
commit 6c2430ce08
2 changed files with 38 additions and 7 deletions
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2
src/highlighter.hh
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@ -25,7 +25,7 @@ typedef std::pair<String, HighlighterFunc> HighlighterAndId;
typedef memoryview<String> HighlighterParameters;
using HighlighterFactory = std::function<HighlighterAndId (const HighlighterParameters& params,
const Window& window)>;
Window& window)>;
using HighlighterGroup = FunctionGroup<DisplayBuffer&>;

43
src/highlighters.cc
View File

@ -331,11 +331,12 @@ void expand_unprintable(DisplayBuffer& display_buffer)
}
}
class FlagLines
class FlagLines : public BufferChangeListener_AutoRegister
{
public:
FlagLines(Color bg, String option_name, const OptionManager& options)
: m_bg(bg), m_option_name(std::move(option_name)),
FlagLines(Color bg, String option_name, OptionManager& options, const Buffer& buffer)
: BufferChangeListener_AutoRegister(buffer),
m_bg(bg), m_option_name(std::move(option_name)),
m_options(options)
{
// trigger an exception if option is not of right type.
@ -360,18 +361,48 @@ public:
}
}
void on_insert(const BufferIterator& begin, const BufferIterator& end) override
{
LineCount new_lines = end.line() - begin.line();
if (new_lines == 0)
return;
auto lines = m_options[m_option_name].get<std::vector<LineAndFlag>>();
for (auto& line : lines)
{
if (std::get<0>(line) > begin.line())
std::get<0>(line) += new_lines;
}
m_options.get_local_option(m_option_name).set(lines);
}
void on_erase(const BufferIterator& begin, const BufferIterator& end) override
{
LineCount removed_lines = end.line() - begin.line();
if (removed_lines == 0)
return;
auto lines = m_options[m_option_name].get<std::vector<LineAndFlag>>();
for (auto& line : lines)
{
if (std::get<0>(line) > begin.line())
std::get<0>(line) -= removed_lines;
}
m_options.get_local_option(m_option_name).set(lines);
}
private:
Color m_bg;
String m_option_name;
const OptionManager& m_options;
OptionManager& m_options;
};
HighlighterAndId flag_lines_factory(const HighlighterParameters& params, const Window& window)
HighlighterAndId flag_lines_factory(const HighlighterParameters& params, Window& window)
{
if (params.size() != 2)
throw runtime_error("wrong parameter count");
return {"hlflags_" + params[1], FlagLines{str_to_color(params[0]), params[1], window.options()}};
return {"hlflags_" + params[1], FlagLines{str_to_color(params[0]), params[1], window.options(), window.buffer()}};
}
template<void (*highlighter_func)(DisplayBuffer&)>