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WindowManager: Basic support for system keymap switching

This commit is contained in:
Timur Sultanov 2022-01-18 16:00:49 +03:00 committed by Andreas Kling
parent 181d1e2dd6
commit 68a01f0e27
6 changed files with 150 additions and 3 deletions

View file

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/*
* Copyright (c) 2021, Timur Sultanov <SultanovTS@yandex.ru>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/JsonObject.h>
#include <LibCore/File.h>
#include <WindowServer/KeymapSwitcher.h>
#include <spawn.h>
#include <unistd.h>
namespace WindowServer {
static KeymapSwitcher* s_the;
KeymapSwitcher& KeymapSwitcher::the()
{
VERIFY(s_the);
return *s_the;
}
KeymapSwitcher::KeymapSwitcher()
{
s_the = this;
}
KeymapSwitcher::~KeymapSwitcher()
{
}
void KeymapSwitcher::refresh()
{
m_keymaps.clear();
//TODO: load keymaps from file
m_keymaps.append("en-us");
m_keymaps.append("ru");
}
void KeymapSwitcher::next_keymap()
{
refresh();
if (m_keymaps.is_empty()) {
dbgln("No keymaps loaded - leaving system keymap unchanged");
return; // TODO: figure out what to do when there is no keymap configured
}
auto current_keymap_name = get_current_keymap();
dbgln("Current system keymap: {}", current_keymap_name);
auto it = m_keymaps.find_if([&](const auto& enumerator) {
return enumerator == current_keymap_name;
});
if (it.is_end()) {
auto first_keymap = m_keymaps.first();
dbgln("Cannot find current keymap in the keymap list - setting first available ({})", first_keymap);
setkeymap(first_keymap);
} else {
it++;
if (it.is_end()) {
it = m_keymaps.begin();
}
dbgln("Setting system keymap to: {}", *it);
setkeymap(*it);
}
}
String KeymapSwitcher::get_current_keymap() const
{
auto proc_keymap = Core::File::construct("/proc/keymap");
if (!proc_keymap->open(Core::OpenMode::ReadOnly))
VERIFY_NOT_REACHED();
auto json = JsonValue::from_string(proc_keymap->read_all()).release_value_but_fixme_should_propagate_errors();
auto const& keymap_object = json.as_object();
VERIFY(keymap_object.has("keymap"));
auto keymap = keymap_object.get("keymap").to_string();
dbgln("Current keymap is: {}", keymap);
return keymap;
}
void KeymapSwitcher::setkeymap(const AK::String& keymap)
{
pid_t child_pid;
const char* argv[] = { "/bin/keymap", keymap.characters(), nullptr };
if ((errno = posix_spawn(&child_pid, "/bin/keymap", nullptr, nullptr, const_cast<char**>(argv), environ))) {
perror("posix_spawn");
dbgln("Failed to call /bin/keymap, error: {} ({})", errno, strerror(errno));
}
}
}