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home/src/input_handler.cc
Maxime Coste 3921b234e7 Store fake keystrokes when selecting an insert completion candidate 
Instead of storing the real 'select next completion' keystroke,
generate fake backspace/delete/char keystrokes so that replay
of the insert will insert the exact same text.

Fixes #135
2015-03-15 18:44:11 +00:00

1176 lines
37 KiB
C++
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#include "input_handler.hh"
#include "buffer_manager.hh"
#include "buffer_utils.hh"
#include "client.hh"
#include "event_manager.hh"
#include "face_registry.hh"
#include "insert_completer.hh"
#include "normal.hh"
#include "regex.hh"
#include "register_manager.hh"
#include "unordered_map.hh"
#include "user_interface.hh"
#include "utf8.hh"
#include "window.hh"
namespace Kakoune
{
class InputMode
{
public:
InputMode(InputHandler& input_handler) : m_input_handler(input_handler) {}
virtual ~InputMode() {}
InputMode(const InputMode&) = delete;
InputMode& operator=(const InputMode&) = delete;
virtual void on_key(Key key) = 0;
virtual void on_enabled() {}
virtual void on_disabled() {}
Context& context() const { return m_input_handler.context(); }
virtual DisplayLine mode_line() const = 0;
virtual KeymapMode keymap_mode() const = 0;
using Insertion = InputHandler::Insertion;
Insertion& last_insert() { return m_input_handler.m_last_insert; }
protected:
void reset_normal_mode();
private:
InputHandler& m_input_handler;
};
namespace InputModes
{
static constexpr std::chrono::milliseconds idle_timeout{50};
static constexpr std::chrono::milliseconds fs_check_timeout{500};
class Normal : public InputMode
{
public:
Normal(InputHandler& input_handler)
: InputMode(input_handler),
m_idle_timer{Clock::now() + idle_timeout,
context().flags() & Context::Flags::Transient ?
Timer::Callback() : Timer::Callback([this](Timer& timer) {
context().hooks().run_hook("NormalIdle", "", context());
})},
m_fs_check_timer{Clock::now() + fs_check_timeout,
context().flags() & Context::Flags::Transient ?
Timer::Callback() : Timer::Callback([this](Timer& timer) {
if (not context().has_client())
return;
context().client().check_if_buffer_needs_reloading();
timer.set_next_date(Clock::now() + fs_check_timeout);
})}
{}
void on_enabled() override
{
if (context().has_client())
{
context().client().check_if_buffer_needs_reloading();
m_fs_check_timer.set_next_date(Clock::now() + fs_check_timeout);
}
context().hooks().run_hook("NormalBegin", "", context());
}
void on_disabled() override
{
context().hooks().run_hook("NormalEnd", "", context());
}
void on_key(Key key) override
{
if (m_waiting_for_reg)
{
if (key.modifiers == Key::Modifiers::None)
m_params.reg = key.key;
m_waiting_for_reg = false;
return;
}
bool do_restore_hooks = false;
auto restore_hooks = on_scope_end([&, this]{
if (do_restore_hooks)
{
context().user_hooks_support().enable();
m_hooks_disabled = false;
}
});
context().print_status({});
if (context().has_ui())
context().ui().info_hide();
if (key.modifiers == Key::Modifiers::None and isdigit(key.key))
m_params.count = m_params.count * 10 + key.key - '0';
else if (key == Key::Backspace)
m_params.count /= 10;
else if (key == '\\')
{
if (not m_hooks_disabled)
{
m_hooks_disabled = true;
context().user_hooks_support().disable();
}
}
else if (key == '"')
{
m_waiting_for_reg = true;
}
else
{
if (m_hooks_disabled)
do_restore_hooks = true;
auto it = std::lower_bound(keymap.begin(), keymap.end(), key,
[](const NormalCmdDesc& lhs, const Key& rhs)
{ return lhs.key < rhs; });
if (it != keymap.end() and it->key == key)
{
if (context().options()["autoinfo"].get<int>() >= 2 and context().has_ui())
context().ui().info_show(key_to_str(key), it->docstring, CharCoord{},
get_face("Information"), InfoStyle::Prompt);
it->func(context(), m_params);
}
m_params = { 0, '"' };
}
context().hooks().run_hook("NormalKey", key_to_str(key), context());
m_idle_timer.set_next_date(Clock::now() + idle_timeout);
}
DisplayLine mode_line() const override
{
AtomList atoms = { { to_string(context().selections().size()) + " sel", Face(Colors::Blue) } };
if (m_params.count != 0)
{
atoms.push_back({ "; param=", Face(Colors::Yellow) });
atoms.push_back({ to_string(m_params.count), Face(Colors::Green) });
}
if (m_params.reg != '"')
{
atoms.push_back({ "; reg=", Face(Colors::Yellow) });
atoms.push_back({ StringView(m_params.reg).str(), Face(Colors::Green) });
}
return atoms;
}
KeymapMode keymap_mode() const override { return KeymapMode::Normal; }
private:
NormalParams m_params = { 0, '"' };
bool m_hooks_disabled = false;
bool m_waiting_for_reg = false;
Timer m_idle_timer;
Timer m_fs_check_timer;
};
template<WordType word_type>
void to_next_word_begin(CharCount& pos, StringView line)
{
const CharCount len = line.char_length();
if (pos == len)
return;
if (word_type == Word and is_punctuation(line[pos]))
{
while (pos != len and is_punctuation(line[pos]))
++pos;
}
else if (is_word<word_type>(line[pos]))
{
while (pos != len and is_word<word_type>(line[pos]))
++pos;
}
while (pos != len and is_blank(line[pos]))
++pos;
}
template<WordType word_type>
void to_next_word_end(CharCount& pos, StringView line)
{
const CharCount len = line.char_length();
if (pos + 1 >= len)
return;
++pos;
while (pos != len and is_blank(line[pos]))
++pos;
if (word_type == Word and is_punctuation(line[pos]))
{
while (pos != len and is_punctuation(line[pos]))
++pos;
}
else if (is_word<word_type>(line[pos]))
{
while (pos != len and is_word<word_type>(line[pos]))
++pos;
}
--pos;
}
template<WordType word_type>
void to_prev_word_begin(CharCount& pos, StringView line)
{
if (pos == 0_char)
return;
--pos;
while (pos != 0_char and is_blank(line[pos]))
--pos;
if (word_type == Word and is_punctuation(line[pos]))
{
while (pos != 0_char and is_punctuation(line[pos]))
--pos;
if (!is_punctuation(line[pos]))
++pos;
}
else if (is_word<word_type>(line[pos]))
{
while (pos != 0_char and is_word<word_type>(line[pos]))
--pos;
if (!is_word<word_type>(line[pos]))
++pos;
}
}
class LineEditor
{
public:
void handle_key(Key key)
{
if (key == Key::Left or key == alt('h'))
{
if (m_cursor_pos > 0)
--m_cursor_pos;
}
else if (key == Key::Right or key == alt('l'))
{
if (m_cursor_pos < m_line.char_length())
++m_cursor_pos;
}
else if (key == Key::Home)
m_cursor_pos = 0;
else if (key == Key::End)
m_cursor_pos = m_line.char_length();
else if (key == Key::Backspace or key == alt('x'))
{
if (m_cursor_pos != 0)
{
m_line = m_line.substr(0, m_cursor_pos - 1)
+ m_line.substr(m_cursor_pos);
--m_cursor_pos;
}
}
else if (key == Key::Delete or key == alt('d'))
{
if (m_cursor_pos != m_line.char_length())
m_line = m_line.substr(0, m_cursor_pos)
+ m_line.substr(m_cursor_pos+1);
}
else if (key == ctrl('w'))
to_next_word_begin<Word>(m_cursor_pos, m_line);
else if (key == ctrlalt('w'))
to_next_word_begin<WORD>(m_cursor_pos, m_line);
else if (key == ctrl('b'))
to_prev_word_begin<Word>(m_cursor_pos, m_line);
else if (key == ctrlalt('b'))
to_prev_word_begin<WORD>(m_cursor_pos, m_line);
else if (key == ctrl('e'))
to_next_word_end<Word>(m_cursor_pos, m_line);
else if (key == ctrlalt('e'))
to_next_word_end<WORD>(m_cursor_pos, m_line);
else
{
m_line = m_line.substr(0, m_cursor_pos) + codepoint_to_str(key.key)
+ m_line.substr(m_cursor_pos);
++m_cursor_pos;
}
}
void insert(StringView str)
{
insert_from(m_cursor_pos, str);
}
void insert_from(CharCount start, StringView str)
{
kak_assert(start <= m_cursor_pos);
m_line = m_line.substr(0, start) + str
+ m_line.substr(m_cursor_pos);
m_cursor_pos = start + str.char_length();
}
void reset(String line)
{
m_line = std::move(line);
m_cursor_pos = m_line.char_length();
}
const String& line() const { return m_line; }
CharCount cursor_pos() const { return m_cursor_pos; }
DisplayLine build_display_line(CharCount width)
{
kak_assert(m_cursor_pos <= m_line.char_length());
if (m_cursor_pos < m_display_pos)
m_display_pos = m_cursor_pos;
if (m_cursor_pos >= m_display_pos + width)
m_display_pos = m_cursor_pos + 1 - width;
if (m_cursor_pos == m_line.char_length())
return DisplayLine{{ {m_line.substr(m_display_pos, width-1).str(), get_face("StatusLine")},
{" "_str, get_face("StatusCursor")} }};
else
return DisplayLine({ { m_line.substr(m_display_pos, m_cursor_pos - m_display_pos).str(), get_face("StatusLine") },
{ m_line.substr(m_cursor_pos,1).str(), get_face("StatusCursor") },
{ m_line.substr(m_cursor_pos+1, width - m_cursor_pos + m_display_pos - 1).str(), get_face("StatusLine") } });
}
private:
CharCount m_cursor_pos = 0;
CharCount m_display_pos = 0;
String m_line;
};
class Menu : public InputMode
{
public:
Menu(InputHandler& input_handler, ConstArrayView<String> choices,
MenuCallback callback)
: InputMode(input_handler),
m_callback(callback), m_choices(choices.begin(), choices.end()),
m_selected(m_choices.begin())
{
if (not context().has_ui())
return;
context().ui().menu_show(choices, CharCoord{}, get_face("MenuForeground"),
get_face("MenuBackground"), MenuStyle::Prompt);
context().ui().menu_select(0);
}
void on_key(Key key) override
{
auto match_filter = [this](const String& str) {
return regex_match(str.begin(), str.end(), m_filter);
};
if (key == ctrl('m'))
{
if (context().has_ui())
context().ui().menu_hide();
context().print_status(DisplayLine{});
reset_normal_mode();
int selected = m_selected - m_choices.begin();
m_callback(selected, MenuEvent::Validate, context());
return;
}
else if (key == Key::Escape or key == ctrl('c'))
{
if (m_edit_filter)
{
m_edit_filter = false;
m_filter = Regex(".*");
m_filter_editor.reset("");
context().print_status(DisplayLine{});
}
else
{
if (context().has_ui())
context().ui().menu_hide();
reset_normal_mode();
int selected = m_selected - m_choices.begin();
m_callback(selected, MenuEvent::Abort, context());
}
}
else if (key == Key::Down or key == ctrl('i') or
key == ctrl('n') or (not m_edit_filter and key == 'j'))
{
auto it = std::find_if(m_selected+1, m_choices.end(), match_filter);
if (it == m_choices.end())
it = std::find_if(m_choices.begin(), m_selected, match_filter);
select(it);
}
else if (key == Key::Up or key == Key::BackTab or
key == ctrl('p') or (not m_edit_filter and key == 'k'))
{
ChoiceList::const_reverse_iterator selected(m_selected+1);
auto it = std::find_if(selected+1, m_choices.rend(), match_filter);
if (it == m_choices.rend())
it = std::find_if(m_choices.rbegin(), selected, match_filter);
select(it.base()-1);
}
else if (key == '/' and not m_edit_filter)
{
m_edit_filter = true;
}
else if (m_edit_filter)
{
m_filter_editor.handle_key(key);
auto search = ".*" + m_filter_editor.line() + ".*";
m_filter = Regex(search.begin(), search.end());
auto it = std::find_if(m_selected, m_choices.end(), match_filter);
if (it == m_choices.end())
it = std::find_if(m_choices.begin(), m_selected, match_filter);
select(it);
}
if (m_edit_filter and context().has_ui())
{
auto prompt = "filter:"_str;
auto width = context().ui().dimensions().column - prompt.char_length();
auto display_line = m_filter_editor.build_display_line(width);
display_line.insert(display_line.begin(), { prompt, get_face("Prompt") });
context().print_status(display_line);
}
}
DisplayLine mode_line() const override
{
return { "menu", Face(Colors::Yellow) };
}
KeymapMode keymap_mode() const override { return KeymapMode::Menu; }
private:
MenuCallback m_callback;
using ChoiceList = Vector<String>;
const ChoiceList m_choices;
ChoiceList::const_iterator m_selected;
void select(ChoiceList::const_iterator it)
{
m_selected = it;
int selected = m_selected - m_choices.begin();
if (context().has_ui())
context().ui().menu_select(selected);
m_callback(selected, MenuEvent::Select, context());
}
Regex m_filter = Regex(".*");
bool m_edit_filter = false;
LineEditor m_filter_editor;
};
String common_prefix(ConstArrayView<String> strings)
{
String res;
if (strings.empty())
return res;
res = strings[0];
for (auto& str : strings)
{
ByteCount len = std::min(res.length(), str.length());
ByteCount common_len = 0;
while (common_len < len and str[common_len] == res[common_len])
++common_len;
if (common_len != res.length())
res = res.substr(0, common_len).str();
}
return res;
}
class Prompt : public InputMode
{
public:
Prompt(InputHandler& input_handler, StringView prompt,
String initstr, Face face, Completer completer,
PromptCallback callback)
: InputMode(input_handler), m_prompt(prompt.str()), m_prompt_face(face),
m_completer(completer), m_callback(callback),
m_autoshowcompl{context().options()["autoshowcompl"].get<bool>()}
{
m_history_it = ms_history[m_prompt].end();
if (m_autoshowcompl)
refresh_completions(CompletionFlags::Fast);
m_line_editor.reset(std::move(initstr));
display();
}
void on_key(Key key) override
{
History& history = ms_history[m_prompt];
const String& line = m_line_editor.line();
bool showcompl = false;
if (m_mode == Mode::InsertReg)
{
StringView reg = context().main_sel_register_value(String{key.key});
m_line_editor.insert(reg);
m_mode = Mode::Default;
}
else if (key == ctrl('m')) // enter
{
if (context().history_support().is_enabled())
history_push(history, line);
context().print_status(DisplayLine{});
if (context().has_ui())
context().ui().menu_hide();
reset_normal_mode();
// call callback after reset_normal_mode so that callback
// may change the mode
m_callback(line, PromptEvent::Validate, context());
return;
}
else if (key == Key::Escape or key == ctrl('c'))
{
if (context().history_support().is_enabled())
history_push(history, line);
context().print_status(DisplayLine{});
if (context().has_ui())
context().ui().menu_hide();
reset_normal_mode();
m_callback(line, PromptEvent::Abort, context());
return;
}
else if (key == ctrl('r'))
{
m_mode = Mode::InsertReg;
}
else if (key == Key::Up or key == ctrl('p'))
{
if (m_history_it != history.begin())
{
if (m_history_it == history.end())
m_prefix = line;
auto it = m_history_it;
// search for the previous history entry matching typed prefix
do
{
--it;
if (prefix_match(*it, m_prefix))
{
m_history_it = it;
m_line_editor.reset(*it);
break;
}
} while (it != history.begin());
clear_completions();
showcompl = true;
}
}
else if (key == Key::Down or key == ctrl('n')) // next
{
if (m_history_it != history.end())
{
// search for the next history entry matching typed prefix
++m_history_it;
while (m_history_it != history.end() and
prefix_match(*m_history_it, m_prefix))
++m_history_it;
if (m_history_it != history.end())
m_line_editor.reset(*m_history_it);
else
m_line_editor.reset(m_prefix);
clear_completions();
showcompl = true;
}
}
else if (key == ctrl('i') or key == Key::BackTab) // tab completion
{
const bool reverse = (key == Key::BackTab);
CandidateList& candidates = m_completions.candidates;
// first try, we need to ask our completer for completions
bool updated_completions = false;
if (candidates.empty())
{
refresh_completions(CompletionFlags::None);
if (candidates.empty())
return;
updated_completions = true;
}
bool did_prefix = false;
if (m_current_completion == -1 and
context().options()["complete_prefix"].get<bool>())
{
const String& line = m_line_editor.line();
CandidateList& candidates = m_completions.candidates;
String prefix = common_prefix(candidates);
if (m_completions.end - m_completions.start > prefix.length())
prefix = line.substr(m_completions.start,
m_completions.end - m_completions.start).str();
if (not prefix.empty())
{
auto it = find(candidates, prefix);
if (it == candidates.end())
{
m_current_completion = candidates.size();
candidates.push_back(prefix);
}
else
m_current_completion = it - candidates.begin();
CharCount start = line.char_count_to(m_completions.start);
// When we just updated completions, select the common
// prefix even if it was the currently entered text.
did_prefix = updated_completions or
prefix != line.substr(start, m_line_editor.cursor_pos() - start);
}
}
if (not did_prefix)
{
if (not reverse and ++m_current_completion >= candidates.size())
m_current_completion = 0;
else if (reverse and --m_current_completion < 0)
m_current_completion = candidates.size()-1;
}
const String& completion = candidates[m_current_completion];
if (context().has_ui())
context().ui().menu_select(m_current_completion);
m_line_editor.insert_from(line.char_count_to(m_completions.start),
completion);
// when we have only one completion candidate, make next tab complete
// from the new content.
if (candidates.size() == 1)
{
m_current_completion = -1;
candidates.clear();
showcompl = true;
}
}
else if (key == ctrl('o'))
{
m_autoshowcompl = false;
clear_completions();
}
else
{
m_line_editor.handle_key(key);
clear_completions();
showcompl = true;
}
if (showcompl and m_autoshowcompl)
refresh_completions(CompletionFlags::Fast);
display();
m_callback(line, PromptEvent::Change, context());
}
void set_prompt_face(Face face)
{
if (face != m_prompt_face)
{
m_prompt_face = face;
display();
}
}
DisplayLine mode_line() const override
{
return { "prompt", Face(Colors::Yellow) };
}
KeymapMode keymap_mode() const override { return KeymapMode::Prompt; }
private:
void refresh_completions(CompletionFlags flags)
{
try
{
if (not m_completer)
return;
m_current_completion = -1;
const String& line = m_line_editor.line();
m_completions = m_completer(context(), flags, line,
line.byte_count_to(m_line_editor.cursor_pos()));
CandidateList& candidates = m_completions.candidates;
if (context().has_ui() and not candidates.empty())
context().ui().menu_show(candidates, CharCoord{}, get_face("MenuForeground"),
get_face("MenuBackground"), MenuStyle::Prompt);
} catch (runtime_error&) {}
}
void clear_completions()
{
m_current_completion = -1;
m_completions.candidates.clear();
if (context().has_ui())
context().ui().menu_hide();
}
void display()
{
if (not context().has_ui())
return;
auto width = context().ui().dimensions().column - m_prompt.char_length();
auto display_line = m_line_editor.build_display_line(width);
display_line.insert(display_line.begin(), { m_prompt, m_prompt_face });
context().print_status(display_line);
}
enum class Mode { Default, InsertReg };
PromptCallback m_callback;
Completer m_completer;
const String m_prompt;
Face m_prompt_face;
Completions m_completions;
int m_current_completion = -1;
String m_prefix;
LineEditor m_line_editor;
bool m_autoshowcompl;
Mode m_mode = Mode::Default;
using History = Vector<String, MemoryDomain::History>;
static UnorderedMap<String, History, MemoryDomain::History> ms_history;
History::iterator m_history_it;
static void history_push(History& history, StringView entry)
{
if(entry.empty())
{
return;
}
History::iterator it;
while ((it = find(history, entry)) != history.end())
history.erase(it);
history.push_back(entry.str());
}
};
UnorderedMap<String, Prompt::History, MemoryDomain::History> Prompt::ms_history;
class NextKey : public InputMode
{
public:
NextKey(InputHandler& input_handler, KeymapMode keymap_mode, KeyCallback callback)
: InputMode(input_handler), m_keymap_mode(keymap_mode), m_callback(callback) {}
void on_key(Key key) override
{
reset_normal_mode();
m_callback(key, context());
}
DisplayLine mode_line() const override
{
return { "enter key", Face(Colors::Yellow) };
}
KeymapMode keymap_mode() const override { return m_keymap_mode; }
private:
KeyCallback m_callback;
KeymapMode m_keymap_mode;
};
class Insert : public InputMode
{
public:
Insert(InputHandler& input_handler, InsertMode mode)
: InputMode(input_handler),
m_insert_mode(mode),
m_edition(context()),
m_completer(context()),
m_autoshowcompl(true),
m_idle_timer{Clock::now() + idle_timeout,
[this](Timer& timer) {
context().hooks().run_hook("InsertIdle", "", context());
if (m_autoshowcompl)
m_completer.update();
}},
m_disable_hooks{context().user_hooks_support().is_disabled()}
{
// Prolongate hook disabling for the whole insert session
if (m_disable_hooks)
context().user_hooks_support().disable();
last_insert().first = mode;
last_insert().second.clear();
context().hooks().run_hook("InsertBegin", "", context());
prepare(m_insert_mode);
}
void on_key(Key key) override
{
auto& buffer = context().buffer();
last_insert().second.push_back(key);
if (m_mode == Mode::InsertReg)
{
if (key.modifiers == Key::Modifiers::None)
insert(RegisterManager::instance()[key.key].values(context()));
m_mode = Mode::Default;
return;
}
if (m_mode == Mode::Complete)
{
if (key.key == 'f')
m_completer.explicit_file_complete();
if (key.key == 'w')
m_completer.explicit_word_complete();
if (key.key == 'l')
m_completer.explicit_line_complete();
m_mode = Mode::Default;
return;
}
bool update_completions = true;
bool moved = false;
if (key == Key::Escape or key == ctrl('c'))
{
context().hooks().run_hook("InsertEnd", "", context());
m_completer.reset();
reset_normal_mode();
}
else if (key == Key::Backspace)
{
Vector<Selection> sels;
for (auto& sel : context().selections())
{
if (sel.cursor() == ByteCoord{0,0})
continue;
auto pos = sel.cursor();
sels.push_back({ buffer.char_prev(pos) });
}
if (not sels.empty())
SelectionList{buffer, std::move(sels)}.erase();
}
else if (key == Key::Delete)
{
Vector<Selection> sels;
for (auto& sel : context().selections())
sels.push_back({ sel.cursor() });
SelectionList{buffer, std::move(sels)}.erase();
}
else if (key == Key::Left)
{
move(-1_char);
moved = true;
}
else if (key == Key::Right)
{
move(1_char);
moved = true;
}
else if (key == Key::Up)
{
move(-1_line);
moved = true;
}
else if (key == Key::Down)
{
move(1_line);
moved = true;
}
else if (key.modifiers == Key::Modifiers::None)
insert(key.key);
else if (key == ctrl('r'))
m_mode = Mode::InsertReg;
else if (key == ctrl('m'))
insert('\n');
else if (key == ctrl('i'))
insert('\t');
else if (key == ctrl('n'))
{
last_insert().second.pop_back();
m_completer.select(1, last_insert().second);
update_completions = false;
}
else if (key == ctrl('p'))
{
last_insert().second.pop_back();
m_completer.select(-1, last_insert().second);
update_completions = false;
}
else if (key == ctrl('x'))
m_mode = Mode::Complete;
else if (key == ctrl('o'))
{
m_autoshowcompl = false;
m_completer.reset();
}
else if (key == ctrl('u'))
context().buffer().commit_undo_group();
context().hooks().run_hook("InsertKey", key_to_str(key), context());
if (update_completions)
m_idle_timer.set_next_date(Clock::now() + idle_timeout);
if (moved)
context().hooks().run_hook("InsertMove", key_to_str(key), context());
}
DisplayLine mode_line() const override
{
auto num_sel = context().selections().size();
return {AtomList{ { "insert ", Face(Colors::Green) },
{ to_string(num_sel) + " sel", Face(Colors::Blue) } }};
}
KeymapMode keymap_mode() const override { return KeymapMode::Insert; }
private:
template<typename Type>
void move(Type offset)
{
auto& selections = context().selections();
for (auto& sel : selections)
{
auto cursor = context().has_window() ? context().window().offset_coord(sel.cursor(), offset)
: context().buffer().offset_coord(sel.cursor(), offset);
sel.anchor() = sel.cursor() = cursor;
}
selections.sort_and_merge_overlapping();
}
void insert(ConstArrayView<String> strings)
{
context().selections().insert(strings, InsertMode::InsertCursor);
}
void insert(Codepoint key)
{
auto str = codepoint_to_str(key);
context().selections().insert(str, InsertMode::InsertCursor);
context().hooks().run_hook("InsertChar", str, context());
}
void prepare(InsertMode mode)
{
SelectionList& selections = context().selections();
Buffer& buffer = context().buffer();
switch (mode)
{
case InsertMode::Insert:
for (auto& sel : selections)
sel = Selection{sel.max(), sel.min()};
break;
case InsertMode::Replace:
selections.erase();
break;
case InsertMode::Append:
for (auto& sel : selections)
{
sel = Selection{sel.min(), sel.max()};
auto& cursor = sel.cursor();
// special case for end of lines, append to current line instead
if (cursor.column != buffer[cursor.line].length() - 1)
cursor = buffer.char_next(cursor);
}
break;
case InsertMode::AppendAtLineEnd:
for (auto& sel : selections)
sel = ByteCoord{sel.max().line, buffer[sel.max().line].length() - 1};
break;
case InsertMode::OpenLineBelow:
for (auto& sel : selections)
sel = ByteCoord{sel.max().line, buffer[sel.max().line].length() - 1};
insert('\n');
break;
case InsertMode::OpenLineAbove:
for (auto& sel : selections)
{
auto line = sel.min().line;
sel = line > 0 ? ByteCoord{line - 1, buffer[line-1].length() - 1}
: ByteCoord{0, 0};
}
insert('\n');
// fix case where we inserted at begining
for (auto& sel : selections)
{
if (sel.anchor() == buffer.char_next({0,0}))
sel = Selection{{0,0}};
}
break;
case InsertMode::InsertAtLineBegin:
for (auto& sel : selections)
{
ByteCoord pos = sel.min().line;
auto pos_non_blank = buffer.iterator_at(pos);
while (*pos_non_blank == ' ' or *pos_non_blank == '\t')
++pos_non_blank;
if (*pos_non_blank != '\n')
pos = pos_non_blank.coord();
sel = pos;
}
break;
case InsertMode::InsertAtNextLineBegin:
case InsertMode::InsertCursor:
kak_assert(false); // invalid for interactive insert
break;
}
if (mode != InsertMode::Append and mode != InsertMode::Replace)
selections.sort_and_merge_overlapping();
selections.check_invariant();
buffer.check_invariant();
}
void on_disabled() override
{
auto& selections = context().selections();
for (auto& sel : selections)
{
if (m_insert_mode == InsertMode::Append and sel.cursor().column > 0)
sel.cursor() = context().buffer().char_prev(sel.cursor());
}
selections.avoid_eol();
if (m_disable_hooks)
context().user_hooks_support().enable();
}
enum class Mode { Default, Complete, InsertReg };
Mode m_mode = Mode::Default;
InsertMode m_insert_mode;
ScopedEdition m_edition;
InsertCompleter m_completer;
bool m_autoshowcompl;
Timer m_idle_timer;
bool m_disable_hooks;
};
}
void InputMode::reset_normal_mode()
{
m_input_handler.reset_normal_mode();
}
InputHandler::InputHandler(SelectionList selections, Context::Flags flags, String name)
: m_context(*this, std::move(selections), flags, std::move(name)),
m_mode(new InputModes::Normal(*this))
{}
InputHandler::~InputHandler()
{}
void InputHandler::change_input_mode(InputMode* new_mode)
{
m_mode->on_disabled();
m_mode_trash.emplace_back(std::move(m_mode));
m_mode.reset(new_mode);
new_mode->on_enabled();
}
void InputHandler::insert(InsertMode mode)
{
change_input_mode(new InputModes::Insert(*this, mode));
}
void InputHandler::repeat_last_insert()
{
if (m_last_insert.second.empty())
return;
Vector<Key> keys;
swap(keys, m_last_insert.second);
// context.last_insert will be refilled by the new Insert
// this is very inefficient.
change_input_mode(new InputModes::Insert(*this, m_last_insert.first));
for (auto& key : keys)
m_mode->on_key(key);
kak_assert(dynamic_cast<InputModes::Normal*>(m_mode.get()) != nullptr);
}
void InputHandler::prompt(StringView prompt, String initstr,
Face prompt_face, Completer completer,
PromptCallback callback)
{
change_input_mode(new InputModes::Prompt(*this, prompt, initstr,
prompt_face, completer,
callback));
}
void InputHandler::set_prompt_face(Face prompt_face)
{
InputModes::Prompt* prompt = dynamic_cast<InputModes::Prompt*>(m_mode.get());
if (prompt)
prompt->set_prompt_face(prompt_face);
}
void InputHandler::menu(ConstArrayView<String> choices,
MenuCallback callback)
{
change_input_mode(new InputModes::Menu(*this, choices, callback));
}
void InputHandler::on_next_key(KeymapMode keymap_mode, KeyCallback callback)
{
change_input_mode(new InputModes::NextKey(*this, keymap_mode, callback));
}
static bool is_valid(Key key)
{
return key != Key::Invalid and key.key <= 0x10FFFF;
}
void InputHandler::handle_key(Key key)
{
if (is_valid(key))
{
const bool was_recording = is_recording();
++m_handle_key_level;
auto dec = on_scope_end([&]{ --m_handle_key_level; });
auto keymap_mode = m_mode->keymap_mode();
KeymapManager& keymaps = m_context.keymaps();
if (keymaps.is_mapped(key, keymap_mode) and
m_context.keymaps_support().is_enabled())
{
for (auto& k : keymaps.get_mapping(key, keymap_mode))
m_mode->on_key(k);
}
else
m_mode->on_key(key);
// do not record the key that made us enter or leave recording mode,
// and the ones that are triggered recursively by previous keys.
if (was_recording and is_recording() and m_handle_key_level == 1)
m_recorded_keys += key_to_str(key);
}
}
void InputHandler::start_recording(char reg)
{
kak_assert(m_recording_reg == 0);
m_recorded_keys = "";
m_recording_reg = reg;
}
bool InputHandler::is_recording() const
{
return m_recording_reg != 0;
}
void InputHandler::stop_recording()
{
kak_assert(m_recording_reg != 0);
RegisterManager::instance()[m_recording_reg] = ConstArrayView<String>(m_recorded_keys);
m_recording_reg = 0;
}
void InputHandler::reset_normal_mode()
{
change_input_mode(new InputModes::Normal(*this));
}
DisplayLine InputHandler::mode_line() const
{
return m_mode->mode_line();
}
void InputHandler::clear_mode_trash()
{
m_mode_trash.clear();
}
}
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