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polybar/include/components/controller.hpp
Patrick Ziegler a119c3386b
controller: Print error for duplicate modules (#1534)
* refactor: Use flat module list if possible

Before if you wanted to iterate over all loaded modules you had to first
iterate over all blocks and then over their modules even if you didn't
care about alignment.

* refactor: setup modules in separate function

* controller: Print error for duplicate modules

You can't use the same name twice inside the module lists

E.g.

  modules-left = a b c
  modules-center = a
  modules-right = b

would print an error.

We only print an error for now because we don't want to break existing
configs. But in the future this should be properly enforced.
2019-10-21 10:20:45 +02:00

158 lines
3.8 KiB
C++

#pragma once
#include <moodycamel/blockingconcurrentqueue.h>
#include <thread>
#include "common.hpp"
#include "events/signal_fwd.hpp"
#include "events/signal_receiver.hpp"
#include "events/types.hpp"
#include "settings.hpp"
#include "utils/file.hpp"
#include "x11/types.hpp"
POLYBAR_NS
// fwd decl {{{
enum class alignment;
class bar;
class command;
class config;
class connection;
class inotify_watch;
class ipc;
class logger;
class signal_emitter;
namespace modules {
struct module_interface;
class input_handler;
} // namespace modules
using module_t = shared_ptr<modules::module_interface>;
using modulemap_t = std::map<alignment, vector<module_t>>;
// }}}
class controller
: public signal_receiver<SIGN_PRIORITY_CONTROLLER, signals::eventqueue::exit_terminate,
signals::eventqueue::exit_reload, signals::eventqueue::notify_change, signals::eventqueue::notify_forcechange,
signals::eventqueue::check_state, signals::ipc::action, signals::ipc::command, signals::ipc::hook,
signals::ui::ready, signals::ui::button_press, signals::ui::update_background> {
public:
using make_type = unique_ptr<controller>;
static make_type make(unique_ptr<ipc>&& ipc, unique_ptr<inotify_watch>&& config_watch);
explicit controller(connection&, signal_emitter&, const logger&, const config&, unique_ptr<bar>&&, unique_ptr<ipc>&&,
unique_ptr<inotify_watch>&&);
~controller();
bool run(bool writeback, string snapshot_dst);
bool enqueue(event&& evt);
bool enqueue(string&& input_data);
protected:
void read_events();
void process_eventqueue();
void process_inputdata();
bool process_update(bool force);
bool on(const signals::eventqueue::notify_change& evt);
bool on(const signals::eventqueue::notify_forcechange& evt);
bool on(const signals::eventqueue::exit_terminate& evt);
bool on(const signals::eventqueue::exit_reload& evt);
bool on(const signals::eventqueue::check_state& evt);
bool on(const signals::ui::ready& evt);
bool on(const signals::ui::button_press& evt);
bool on(const signals::ipc::action& evt);
bool on(const signals::ipc::command& evt);
bool on(const signals::ipc::hook& evt);
bool on(const signals::ui::update_background& evt);
private:
size_t setup_modules(alignment align);
connection& m_connection;
signal_emitter& m_sig;
const logger& m_log;
const config& m_conf;
unique_ptr<bar> m_bar;
unique_ptr<ipc> m_ipc;
unique_ptr<inotify_watch> m_confwatch;
unique_ptr<command> m_command;
array<unique_ptr<file_descriptor>, 2> m_queuefd{};
/**
* \brief State flag
*/
std::atomic<bool> m_process_events{false};
/**
* \brief Destination path of generated snapshot
*/
string m_snapshot_dst;
/**
* \brief Controls weather the output gets printed to stdout
*/
bool m_writeback{false};
/**
* \brief Internal event queue
*/
moodycamel::BlockingConcurrentQueue<event> m_queue;
/**
* \brief Loaded modules
*/
vector<module_t> m_modules;
/**
* \brief Loaded modules grouped by block
*/
modulemap_t m_blocks;
/**
* \brief Module input handlers
*/
vector<modules::input_handler*> m_inputhandlers;
/**
* \brief Maximum number of subsequent events to swallow
*/
size_t m_swallow_limit{5U};
/**
* \brief Time to wait for subsequent events
*/
std::chrono::milliseconds m_swallow_update{10};
/**
* \brief Time to throttle input events
*/
std::chrono::milliseconds m_swallow_input{30};
/**
* \brief Time of last handled input event
*/
std::chrono::time_point<std::chrono::system_clock, std::chrono::milliseconds> m_lastinput;
/**
* \brief Input data
*/
string m_inputdata;
/**
* \brief Thread for the eventqueue loop
*/
std::thread m_event_thread;
/**
* \brief Misc threads
*/
vector<std::thread> m_threads;
};
POLYBAR_NS_END