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115 lines
3.2 KiB
C++
115 lines
3.2 KiB
C++
/*
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* Copyright (c) 2021, Timur Sultanov <SultanovTS@yandex.ru>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/JsonObject.h>
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#include <LibCore/ConfigFile.h>
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#include <LibCore/File.h>
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#include <WindowServer/KeymapSwitcher.h>
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#include <spawn.h>
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#include <unistd.h>
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namespace WindowServer {
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KeymapSwitcher::KeymapSwitcher()
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{
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m_file_watcher = MUST(Core::FileWatcher::create());
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m_file_watcher->on_change = [this](auto&) {
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refresh();
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};
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MUST(m_file_watcher->add_watch(m_keyboard_config, Core::FileWatcherEvent::Type::ContentModified));
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refresh();
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}
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void KeymapSwitcher::refresh()
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{
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m_keymaps.clear();
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auto mapper_config(Core::ConfigFile::open(m_keyboard_config).release_value_but_fixme_should_propagate_errors());
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auto keymaps = mapper_config->read_entry("Mapping", "Keymaps", "");
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auto keymaps_vector = keymaps.split(',');
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for (auto& keymap : keymaps_vector) {
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m_keymaps.append(keymap);
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}
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if (m_keymaps.is_empty()) {
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dbgln("Empty list of keymaps - adding default (en-us)");
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m_keymaps.append("en-us");
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}
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auto current_keymap = get_current_keymap();
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// Refresh might indicate that some external program has changed the keymap,
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// so better notify our clients that we may have a new keymap
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if (on_keymap_change)
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on_keymap_change(current_keymap);
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if (m_keymaps.find(current_keymap).is_end()) {
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setkeymap(m_keymaps.first());
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}
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}
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void KeymapSwitcher::next_keymap()
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{
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if (m_keymaps.is_empty()) {
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dbgln("No keymaps loaded - leaving system keymap unchanged");
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return; // TODO: figure out what to do when there is no keymap configured
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}
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auto current_keymap_name = get_current_keymap();
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dbgln("Current system keymap: {}", current_keymap_name);
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auto it = m_keymaps.find_if([&](auto const& enumerator) {
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return enumerator == current_keymap_name;
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});
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if (it.is_end()) {
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auto first_keymap = m_keymaps.first();
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dbgln("Cannot find current keymap in the keymap list - setting first available ({})", first_keymap);
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setkeymap(first_keymap);
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} else {
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it++;
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if (it.is_end()) {
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it = m_keymaps.begin();
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}
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dbgln("Setting system keymap to: {}", *it);
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setkeymap(*it);
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}
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}
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String KeymapSwitcher::get_current_keymap() const
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{
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auto proc_keymap = Core::File::construct("/proc/keymap");
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if (!proc_keymap->open(Core::OpenMode::ReadOnly))
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VERIFY_NOT_REACHED();
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auto json = JsonValue::from_string(proc_keymap->read_all()).release_value_but_fixme_should_propagate_errors();
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auto const& keymap_object = json.as_object();
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VERIFY(keymap_object.has("keymap"));
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return keymap_object.get("keymap").to_string();
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}
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void KeymapSwitcher::setkeymap(const AK::String& keymap)
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{
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pid_t child_pid;
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char const* argv[] = { "/bin/keymap", "-m", keymap.characters(), nullptr };
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if ((errno = posix_spawn(&child_pid, "/bin/keymap", nullptr, nullptr, const_cast<char**>(argv), environ))) {
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perror("posix_spawn");
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dbgln("Failed to call /bin/keymap, error: {} ({})", errno, strerror(errno));
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}
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if (on_keymap_change)
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on_keymap_change(keymap);
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}
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}
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