gnome-shell/js/misc/keyboardManager.js
Peng Wu f563424417 keyboard: Fix display keyboard layout crash with some input methods
Some ibus input method will use the current keyboard layout,
and return "default" as the keyboard layout.
When this happens, display the current keyboard layout instead.

Fixes .

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1756>
2021-03-29 09:33:45 +00:00

164 lines
4.8 KiB
JavaScript

// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
/* exported getKeyboardManager, holdKeyboard, releaseKeyboard */
const { GLib, GnomeDesktop } = imports.gi;
const Main = imports.ui.main;
var DEFAULT_LOCALE = 'en_US';
var DEFAULT_LAYOUT = 'us';
var DEFAULT_VARIANT = '';
let _xkbInfo = null;
function getXkbInfo() {
if (_xkbInfo == null)
_xkbInfo = new GnomeDesktop.XkbInfo();
return _xkbInfo;
}
let _keyboardManager = null;
function getKeyboardManager() {
if (_keyboardManager == null)
_keyboardManager = new KeyboardManager();
return _keyboardManager;
}
function releaseKeyboard() {
if (Main.modalCount > 0)
global.display.unfreeze_keyboard(global.get_current_time());
else
global.display.ungrab_keyboard(global.get_current_time());
}
function holdKeyboard() {
global.display.freeze_keyboard(global.get_current_time());
}
var KeyboardManager = class {
constructor() {
// The XKB protocol doesn't allow for more that 4 layouts in a
// keymap. Wayland doesn't impose this limit and libxkbcommon can
// handle up to 32 layouts but since we need to support X clients
// even as a Wayland compositor, we can't bump this.
this.MAX_LAYOUTS_PER_GROUP = 4;
this._xkbInfo = getXkbInfo();
this._current = null;
this._localeLayoutInfo = this._getLocaleLayout();
this._layoutInfos = {};
this._currentKeymap = null;
}
_applyLayoutGroup(group) {
let options = this._buildOptionsString();
let [layouts, variants] = this._buildGroupStrings(group);
if (this._currentKeymap &&
this._currentKeymap.layouts == layouts &&
this._currentKeymap.variants == variants &&
this._currentKeymap.options == options)
return;
this._currentKeymap = { layouts, variants, options };
global.backend.set_keymap(layouts, variants, options);
}
_applyLayoutGroupIndex(idx) {
global.backend.lock_layout_group(idx);
}
apply(id) {
let info = this._layoutInfos[id];
if (!info)
return;
if (this._current && this._current.group == info.group) {
if (this._current.groupIndex != info.groupIndex)
this._applyLayoutGroupIndex(info.groupIndex);
} else {
this._applyLayoutGroup(info.group);
this._applyLayoutGroupIndex(info.groupIndex);
}
this._current = info;
}
reapply() {
if (!this._current)
return;
this._applyLayoutGroup(this._current.group);
this._applyLayoutGroupIndex(this._current.groupIndex);
}
setUserLayouts(ids) {
this._current = null;
this._layoutInfos = {};
for (let i = 0; i < ids.length; ++i) {
let [found, , , _layout, _variant] = this._xkbInfo.get_layout_info(ids[i]);
if (found)
this._layoutInfos[ids[i]] = { id: ids[i], layout: _layout, variant: _variant };
}
let i = 0;
let group = [];
for (let id in this._layoutInfos) {
// We need to leave one slot on each group free so that we
// can add a layout containing the symbols for the
// language used in UI strings to ensure that toolkits can
// handle mnemonics like Alt+Ф even if the user is
// actually typing in a different layout.
let groupIndex = i % (this.MAX_LAYOUTS_PER_GROUP - 1);
if (groupIndex == 0)
group = [];
let info = this._layoutInfos[id];
group[groupIndex] = info;
info.group = group;
info.groupIndex = groupIndex;
i += 1;
}
}
_getLocaleLayout() {
let locale = GLib.get_language_names()[0];
if (!locale.includes('_'))
locale = DEFAULT_LOCALE;
let [found, , id] = GnomeDesktop.get_input_source_from_locale(locale);
if (!found)
[, , id] = GnomeDesktop.get_input_source_from_locale(DEFAULT_LOCALE);
let _layout, _variant;
[found, , , _layout, _variant] = this._xkbInfo.get_layout_info(id);
if (found)
return { layout: _layout, variant: _variant };
else
return { layout: DEFAULT_LAYOUT, variant: DEFAULT_VARIANT };
}
_buildGroupStrings(_group) {
let group = _group.concat(this._localeLayoutInfo);
let layouts = group.map(g => g.layout).join(',');
let variants = group.map(g => g.variant).join(',');
return [layouts, variants];
}
setKeyboardOptions(options) {
this._xkbOptions = options;
}
_buildOptionsString() {
let options = this._xkbOptions.join(',');
return options;
}
get currentLayout() {
return this._current;
}
};