kakoune/src/client.cc

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#include "client.hh"
#include "face_registry.hh"
#include "context.hh"
#include "buffer_manager.hh"
#include "buffer_utils.hh"
#include "file.hh"
#include "remote.hh"
#include "client_manager.hh"
#include "command_manager.hh"
#include "event_manager.hh"
#include "user_interface.hh"
#include "window.hh"
#include <signal.h>
#include <unistd.h>
namespace Kakoune
{
Client::Client(std::unique_ptr<UserInterface>&& ui,
std::unique_ptr<Window>&& window,
SelectionList selections,
EnvVarMap env_vars,
String name)
: m_ui{std::move(ui)}, m_window{std::move(window)},
m_input_handler{std::move(selections), Context::Flags::None,
std::move(name)},
m_env_vars(env_vars)
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{
m_window->set_client(this);
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context().set_client(*this);
context().set_window(*m_window);
m_window->set_dimensions(m_ui->dimensions());
m_window->options().register_watcher(*this);
m_ui->set_ui_options(m_window->options()["ui_options"].get<UserInterface::Options>());
m_ui->set_input_callback([this](EventMode mode) { handle_available_input(mode); });
force_redraw();
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}
Client::~Client()
{
m_window->options().unregister_watcher(*this);
m_window->set_client(nullptr);
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}
Optional<Key> Client::get_next_key(EventMode mode)
{
if (not m_pending_keys.empty())
{
Key key = m_pending_keys.front();
m_pending_keys.erase(m_pending_keys.begin());
return key;
}
if (mode != EventMode::Pending and m_ui->is_key_available())
return m_ui->get_key();
return {};
}
void Client::handle_available_input(EventMode mode)
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{
if (mode == EventMode::Urgent)
{
Key key = m_ui->get_key();
if (key == ctrl('c'))
killpg(getpgrp(), SIGINT);
else
m_pending_keys.push_back(key);
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return;
}
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try
{
try
{
while (Optional<Key> key = get_next_key(mode))
{
if (*key == ctrl('c'))
killpg(getpgrp(), SIGINT);
else if (*key == Key::FocusIn)
context().hooks().run_hook("FocusIn", context().name(), context());
else if (*key == Key::FocusOut)
context().hooks().run_hook("FocusOut", context().name(), context());
else if (key->modifiers == Key::Modifiers::Resize)
{
m_window->set_dimensions(m_ui->dimensions());
force_redraw();
}
else
m_input_handler.handle_key(*key);
}
}
catch (Kakoune::runtime_error& error)
{
context().print_status({ error.what().str(), get_face("Error") });
context().hooks().run_hook("RuntimeError", error.what(), context());
}
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}
catch (Kakoune::client_removed& removed)
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{
ClientManager::instance().remove_client(*this, removed.graceful);
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}
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}
void Client::print_status(DisplayLine status_line)
{
m_status_line = std::move(status_line);
m_ui_pending |= StatusLine;
}
DisplayLine Client::generate_mode_line() const
{
DisplayLine modeline;
try
{
const String& modelinefmt = context().options()["modelinefmt"].get<String>();
modeline = parse_display_line(expand(modelinefmt, context()));
}
catch (runtime_error& err)
{
write_to_debug_buffer(format("Error while parsing modelinefmt: {}", err.what()));
modeline.push_back({ "modelinefmt error, see *debug* buffer", get_face("Error") });
}
Face info_face = get_face("Information");
if (context().buffer().is_modified())
modeline.push_back({ "[+]", info_face });
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if (m_input_handler.is_recording())
modeline.push_back({ format("[recording ({})]", m_input_handler.recording_reg()), info_face });
if (context().buffer().flags() & Buffer::Flags::New)
modeline.push_back({ "[new file]", info_face });
if (context().user_hooks_disabled())
modeline.push_back({ "[no-hooks]", info_face });
if (context().buffer().flags() & Buffer::Flags::Fifo)
modeline.push_back({ "[fifo]", info_face });
modeline.push_back({ " " });
for (auto& atom : m_input_handler.mode_line())
modeline.push_back(std::move(atom));
modeline.push_back({ format(" - {}@[{}]", context().name(), Server::instance().session()) });
return modeline;
}
void Client::change_buffer(Buffer& buffer)
{
if (m_buffer_reload_dialog_opened)
close_buffer_reload_dialog();
m_last_buffer = &m_window->buffer();
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auto& client_manager = ClientManager::instance();
m_window->options().unregister_watcher(*this);
m_window->set_client(nullptr);
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client_manager.add_free_window(std::move(m_window),
std::move(context().selections()));
WindowAndSelections ws = client_manager.get_free_window(buffer);
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m_window = std::move(ws.window);
m_window->set_client(this);
m_window->options().register_watcher(*this);
m_ui->set_ui_options(m_window->options()["ui_options"].get<UserInterface::Options>());
context().selections_write_only() = std::move(ws.selections);
context().set_window(*m_window);
m_window->set_dimensions(m_ui->dimensions());
force_redraw();
m_window->hooks().run_hook("WinDisplay", buffer.name(), context());
}
static bool is_inline(InfoStyle style)
{
return style == InfoStyle::Inline or
style == InfoStyle::InlineAbove or
style == InfoStyle::InlineBelow;
}
void Client::redraw_ifn()
{
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Window& window = context().window();
if (window.needs_redraw(context()))
m_ui_pending |= Draw;
DisplayLine mode_line = generate_mode_line();
if (mode_line.atoms() != m_mode_line.atoms())
{
m_ui_pending |= StatusLine;
m_mode_line = std::move(mode_line);
}
if (m_ui_pending == 0)
return;
if (m_ui_pending & Draw)
{
m_ui->draw(window.update_display_buffer(context()),
get_face("Default"), get_face("BufferPadding"));
if (not m_menu.items.empty() and m_menu.style == MenuStyle::Inline and
m_menu.ui_anchor != window.display_position(m_menu.anchor))
m_ui_pending |= (MenuShow | MenuSelect);
if (not m_info.content.empty() and is_inline(m_info.style) and
m_info.ui_anchor != window.display_position(m_info.anchor))
m_ui_pending |= InfoShow;
}
if (m_ui_pending & MenuShow)
{
m_menu.ui_anchor = m_menu.style == MenuStyle::Inline ?
window.display_position(m_menu.anchor) : CharCoord{};
m_ui->menu_show(m_menu.items, m_menu.ui_anchor,
get_face("MenuForeground"), get_face("MenuBackground"),
m_menu.style);
}
if (m_ui_pending & MenuSelect)
m_ui->menu_select(m_menu.selected);
if (m_ui_pending & MenuHide)
m_ui->menu_hide();
if (m_ui_pending & InfoShow)
{
m_info.ui_anchor = is_inline(m_info.style) ?
window.display_position(m_info.anchor) : CharCoord{};
m_ui->info_show(m_info.title, m_info.content, m_info.ui_anchor,
get_face("Information"), m_info.style);
}
if (m_ui_pending & InfoHide)
m_ui->info_hide();
if (m_ui_pending & StatusLine)
m_ui->draw_status(m_status_line, m_mode_line, get_face("StatusLine"));
m_ui->refresh(m_ui_pending | Refresh);
m_ui_pending = 0;
}
void Client::force_redraw()
{
m_ui_pending |= Refresh | Draw | StatusLine |
(m_menu.items.empty() ? MenuHide : MenuShow | MenuSelect) |
(m_info.content.empty() ? InfoHide : InfoShow);
}
void Client::reload_buffer()
{
Buffer& buffer = context().buffer();
reload_file_buffer(buffer);
context().print_status({ format("'{}' reloaded", buffer.display_name()),
get_face("Information") });
}
void Client::on_buffer_reload_key(Key key)
{
auto& buffer = context().buffer();
if (key == 'y' or key == ctrl('m'))
reload_buffer();
else if (key == 'n' or key == Key::Escape)
{
// reread timestamp in case the file was modified again
buffer.set_fs_timestamp(get_fs_timestamp(buffer.name()));
print_status({ format("'{}' kept", buffer.display_name()),
get_face("Information") });
}
else
{
print_status({ format("'{}' is not a valid choice", key_to_str(key)),
get_face("Error") });
m_input_handler.on_next_key(KeymapMode::None, [this](Key key, Context&){ on_buffer_reload_key(key); });
return;
}
for (auto& client : ClientManager::instance())
{
if (&client->context().buffer() == &buffer and
client->m_buffer_reload_dialog_opened)
client->close_buffer_reload_dialog();
}
}
void Client::close_buffer_reload_dialog()
{
kak_assert(m_buffer_reload_dialog_opened);
m_buffer_reload_dialog_opened = false;
info_hide();
m_input_handler.reset_normal_mode();
}
void Client::check_if_buffer_needs_reloading()
{
if (m_buffer_reload_dialog_opened)
return;
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Buffer& buffer = context().buffer();
auto reload = context().options()["autoreload"].get<Autoreload>();
if (not (buffer.flags() & Buffer::Flags::File) or reload == Autoreload::No)
return;
const String& filename = buffer.name();
timespec ts = get_fs_timestamp(filename);
if (ts == InvalidTime or ts == buffer.fs_timestamp())
return;
if (reload == Autoreload::Ask)
{
StringView bufname = buffer.display_name();
info_show(format("reload '{}' ?", bufname),
format("'{}' was modified externally\n"
"press <ret> or y to reload, <esc> or n to keep",
bufname), {}, InfoStyle::Prompt);
m_buffer_reload_dialog_opened = true;
m_input_handler.on_next_key(KeymapMode::None, [this](Key key, Context&){ on_buffer_reload_key(key); });
}
else
reload_buffer();
}
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StringView Client::get_env_var(StringView name) const
{
auto it = m_env_vars.find(name);
if (it == m_env_vars.end())
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return {};
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return it->value;
}
void Client::on_option_changed(const Option& option)
{
if (option.name() == "ui_options")
{
m_ui->set_ui_options(option.get<UserInterface::Options>());
m_ui_pending |= Draw;
}
}
void Client::menu_show(Vector<DisplayLine> choices, ByteCoord anchor, MenuStyle style)
{
m_menu = Menu{ std::move(choices), anchor, {}, style, -1 };
m_ui_pending |= MenuShow;
m_ui_pending &= ~MenuHide;
}
void Client::menu_select(int selected)
{
m_menu.selected = selected;
m_ui_pending |= MenuSelect;
m_ui_pending &= ~MenuHide;
}
void Client::menu_hide()
{
m_menu = Menu{};
m_ui_pending |= MenuHide;
m_ui_pending &= ~(MenuShow | MenuSelect);
}
void Client::info_show(String title, String content, ByteCoord anchor, InfoStyle style)
{
m_info = Info{ std::move(title), std::move(content), anchor, {}, style };
m_ui_pending |= InfoShow;
m_ui_pending &= ~InfoHide;
}
void Client::info_hide()
{
m_info = Info{};
m_ui_pending |= InfoHide;
m_ui_pending &= ~InfoShow;
}
}