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// This is an open source non-commercial project. Dear PVS-Studio, please check
// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
// UI wrapper that sends requests to the UI thread.
// Used by the built-in TUI and libnvim-based UIs.
#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <limits.h>
#include "nvim/log.h"
#include "nvim/main.h"
#include "nvim/vim.h"
#include "nvim/ui.h"
#include "nvim/memory.h"
#include "nvim/ui_bridge.h"
#include "nvim/ugrid.h"
#include "nvim/api/private/helpers.h"
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "ui_bridge.c.generated.h"
#endif
#define UI(b) (((UIBridgeData *)b)->ui)
// Schedule a function call on the UI bridge thread.
#define UI_BRIDGE_CALL(ui, name, argc, ...) \
((UIBridgeData *)ui)->scheduler( \
event_create(ui_bridge_##name##_event, argc, __VA_ARGS__), UI(ui))
#define INT2PTR(i) ((void *)(intptr_t)i)
#define PTR2INT(p) ((Integer)(intptr_t)p)
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "ui_events_bridge.generated.h"
#endif
UI *ui_bridge_attach(UI *ui, ui_main_fn ui_main, event_scheduler scheduler)
{
UIBridgeData *rv = xcalloc(1, sizeof(UIBridgeData));
rv->ui = ui;
rv->bridge.rgb = ui->rgb;
rv->bridge.stop = ui_bridge_stop;
rv->bridge.after_startup = ui_bridge_after_startup;
rv->bridge.resize = ui_bridge_resize;
rv->bridge.clear = ui_bridge_clear;
rv->bridge.eol_clear = ui_bridge_eol_clear;
rv->bridge.cursor_goto = ui_bridge_cursor_goto;
rv->bridge.mode_info_set = ui_bridge_mode_info_set;
rv->bridge.update_menu = ui_bridge_update_menu;
rv->bridge.busy_start = ui_bridge_busy_start;
rv->bridge.busy_stop = ui_bridge_busy_stop;
rv->bridge.mouse_on = ui_bridge_mouse_on;
rv->bridge.mouse_off = ui_bridge_mouse_off;
rv->bridge.mode_change = ui_bridge_mode_change;
rv->bridge.set_scroll_region = ui_bridge_set_scroll_region;
rv->bridge.scroll = ui_bridge_scroll;
rv->bridge.highlight_set = ui_bridge_highlight_set;
rv->bridge.put = ui_bridge_put;
rv->bridge.bell = ui_bridge_bell;
rv->bridge.visual_bell = ui_bridge_visual_bell;
rv->bridge.update_fg = ui_bridge_update_fg;
rv->bridge.update_bg = ui_bridge_update_bg;
rv->bridge.update_sp = ui_bridge_update_sp;
rv->bridge.flush = ui_bridge_flush;
rv->bridge.suspend = ui_bridge_suspend;
rv->bridge.set_title = ui_bridge_set_title;
rv->bridge.set_icon = ui_bridge_set_icon;
rv->bridge.option_set = ui_bridge_option_set;
rv->scheduler = scheduler;
for (UIWidget i = 0; (int)i < UI_WIDGETS; i++) {
rv->bridge.ui_ext[i] = ui->ui_ext[i];
}
rv->ui_main = ui_main;
uv_mutex_init(&rv->mutex);
uv_cond_init(&rv->cond);
uv_mutex_lock(&rv->mutex);
rv->ready = false;
if (uv_thread_create(&rv->ui_thread, ui_thread_run, rv)) {
abort();
}
// Suspend the main thread until CONTINUE is called by the UI thread.
while (!rv->ready) {
uv_cond_wait(&rv->cond, &rv->mutex);
}
uv_mutex_unlock(&rv->mutex);
ui_attach_impl(&rv->bridge);
return &rv->bridge;
}
void ui_bridge_stopped(UIBridgeData *bridge)
{
uv_mutex_lock(&bridge->mutex);
bridge->stopped = true;
uv_mutex_unlock(&bridge->mutex);
}
static void ui_thread_run(void *data)
{
UIBridgeData *bridge = data;
bridge->ui_main(bridge, bridge->ui);
}
static void ui_bridge_after_startup(UI *b)
{
UI_BRIDGE_CALL(b, after_startup, 1, b);
}
static void ui_bridge_after_startup_event(void **argv)
{
UI *ui = UI(argv[0]);
ui->after_startup(ui);
}
static void ui_bridge_stop(UI *b)
{
UIBridgeData *bridge = (UIBridgeData *)b;
bool stopped = bridge->stopped = false;
UI_BRIDGE_CALL(b, stop, 1, b);
for (;;) {
uv_mutex_lock(&bridge->mutex);
stopped = bridge->stopped;
uv_mutex_unlock(&bridge->mutex);
if (stopped) {
break;
}
loop_poll_events(&main_loop, 10);
}
uv_thread_join(&bridge->ui_thread);
uv_mutex_destroy(&bridge->mutex);
uv_cond_destroy(&bridge->cond);
ui_detach_impl(b);
xfree(b);
}
static void ui_bridge_stop_event(void **argv)
{
UI *ui = UI(argv[0]);
ui->stop(ui);
}
static void ui_bridge_highlight_set(UI *b, HlAttrs attrs)
{
HlAttrs *a = xmalloc(sizeof(HlAttrs));
*a = attrs;
UI_BRIDGE_CALL(b, highlight_set, 2, b, a);
}
static void ui_bridge_highlight_set_event(void **argv)
{
UI *ui = UI(argv[0]);
ui->highlight_set(ui, *((HlAttrs *)argv[1]));
xfree(argv[1]);
}
static void ui_bridge_option_set(UI *ui, String name, Object value)
{
// Assumes bridge is only used by TUI
if (strequal(name.data, "termguicolors")) {
ui->rgb = value.data.boolean;
}
String copy_name = copy_string(name);
Object *copy_value = xmalloc(sizeof(Object));
*copy_value = copy_object(value);
UI_BRIDGE_CALL(ui, option_set, 4, ui,
copy_name.data, INT2PTR(copy_name.size), copy_value);
}
static void ui_bridge_option_set_event(void **argv)
{
UI *ui = UI(argv[0]);
String name = (String){ .data = argv[1], .size = (size_t)argv[2] };
Object value = *(Object *)argv[3];
ui->option_set(ui, name, value);
api_free_string(name);
api_free_object(value);
xfree(argv[3]);
}
static void ui_bridge_suspend(UI *b)
{
UIBridgeData *data = (UIBridgeData *)b;
uv_mutex_lock(&data->mutex);
UI_BRIDGE_CALL(b, suspend, 1, b);
data->ready = false;
// Suspend the main thread until CONTINUE is called by the UI thread.
while (!data->ready) {
uv_cond_wait(&data->cond, &data->mutex);
}
uv_mutex_unlock(&data->mutex);
}
static void ui_bridge_suspend_event(void **argv)
{
UI *ui = UI(argv[0]);
ui->suspend(ui);
}
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