gnome-shell/js/ui/status/keyboard.js

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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const GnomeDesktop = imports.gi.GnomeDesktop;
const Lang = imports.lang;
const Meta = imports.gi.Meta;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const St = imports.gi.St;
const Gettext = imports.gettext;
try {
var IBus = imports.gi.IBus;
if (!('new_async' in IBus.Bus))
throw "IBus version is too old";
const IBusCandidatePopup = imports.ui.ibusCandidatePopup;
} catch (e) {
var IBus = null;
log(e);
}
const Main = imports.ui.main;
const PopupMenu = imports.ui.popupMenu;
const PanelMenu = imports.ui.panelMenu;
const SwitcherPopup = imports.ui.switcherPopup;
const Util = imports.misc.util;
const DESKTOP_INPUT_SOURCES_SCHEMA = 'org.gnome.desktop.input-sources';
const KEY_CURRENT_INPUT_SOURCE = 'current';
const KEY_INPUT_SOURCES = 'sources';
const INPUT_SOURCE_TYPE_XKB = 'xkb';
const INPUT_SOURCE_TYPE_IBUS = 'ibus';
// This is the longest we'll keep the keyboard frozen until an input
// source is active.
const MAX_INPUT_SOURCE_ACTIVATION_TIME = 4000; // ms
const BUS_NAME = 'org.gnome.SettingsDaemon.Keyboard';
const OBJECT_PATH = '/org/gnome/SettingsDaemon/Keyboard';
const KeyboardManagerInterface = <interface name="org.gnome.SettingsDaemon.Keyboard">
<method name="SetInputSource">
<arg type="u" direction="in" />
</method>
</interface>;
const KeyboardManagerProxy = Gio.DBusProxy.makeProxyWrapper(KeyboardManagerInterface);
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.freeze_keyboard(global.get_current_time());
}
const IBusManager = new Lang.Class({
Name: 'IBusManager',
_init: function(readyCallback) {
if (!IBus)
return;
IBus.init();
this._readyCallback = readyCallback;
this._candidatePopup = new IBusCandidatePopup.CandidatePopup();
this._panelService = null;
this._engines = {};
this._ready = false;
this._registerPropertiesId = 0;
this._currentEngineName = null;
this._ibus = IBus.Bus.new_async();
this._ibus.connect('connected', Lang.bind(this, this._onConnected));
this._ibus.connect('disconnected', Lang.bind(this, this._clear));
// Need to set this to get 'global-engine-changed' emitions
this._ibus.set_watch_ibus_signal(true);
this._ibus.connect('global-engine-changed', Lang.bind(this, this._engineChanged));
},
_clear: function() {
if (this._panelService)
this._panelService.destroy();
this._panelService = null;
this._candidatePopup.setPanelService(null);
this._engines = {};
this._ready = false;
this._registerPropertiesId = 0;
this._currentEngineName = null;
if (this._readyCallback)
this._readyCallback(false);
},
_onConnected: function() {
this._ibus.list_engines_async(-1, null, Lang.bind(this, this._initEngines));
this._ibus.request_name_async(IBus.SERVICE_PANEL,
IBus.BusNameFlag.REPLACE_EXISTING,
-1, null,
Lang.bind(this, this._initPanelService));
},
_initEngines: function(ibus, result) {
let enginesList = this._ibus.list_engines_async_finish(result);
if (enginesList) {
for (let i = 0; i < enginesList.length; ++i) {
let name = enginesList[i].get_name();
this._engines[name] = enginesList[i];
}
this._updateReadiness();
} else {
this._clear();
}
},
_initPanelService: function(ibus, result) {
let success = this._ibus.request_name_async_finish(result);
if (success) {
this._panelService = new IBus.PanelService({ connection: this._ibus.get_connection(),
object_path: IBus.PATH_PANEL });
this._candidatePopup.setPanelService(this._panelService);
this._panelService.connect('update-property', Lang.bind(this, this._updateProperty));
// If an engine is already active we need to get its properties
this._ibus.get_global_engine_async(-1, null, Lang.bind(this, function(i, result) {
let engine;
try {
engine = this._ibus.get_global_engine_async_finish(result);
if (!engine)
return;
} catch(e) {
return;
}
this._engineChanged(this._ibus, engine.get_name());
}));
this._updateReadiness();
} else {
this._clear();
}
},
_updateReadiness: function() {
this._ready = (Object.keys(this._engines).length > 0 &&
this._panelService != null);
if (this._readyCallback)
this._readyCallback(this._ready);
},
_engineChanged: function(bus, engineName) {
if (!this._ready)
return;
this._currentEngineName = engineName;
if (this._registerPropertiesId != 0)
return;
this._registerPropertiesId =
this._panelService.connect('register-properties', Lang.bind(this, function(p, props) {
if (!props.get(0))
return;
this._panelService.disconnect(this._registerPropertiesId);
this._registerPropertiesId = 0;
this.emit('properties-registered', this._currentEngineName, props);
}));
},
_updateProperty: function(panel, prop) {
this.emit('property-updated', this._currentEngineName, prop);
},
activateProperty: function(key, state) {
this._panelService.property_activate(key, state);
},
getEngineDesc: function(id) {
if (!IBus || !this._ready)
return null;
return this._engines[id];
}
});
Signals.addSignalMethods(IBusManager.prototype);
const LayoutMenuItem = new Lang.Class({
Name: 'LayoutMenuItem',
Extends: PopupMenu.PopupBaseMenuItem,
_init: function(displayName, shortName) {
this.parent();
this.label = new St.Label({ text: displayName });
this.indicator = new St.Label({ text: shortName });
this.actor.add(this.label, { expand: true });
this.actor.add(this.indicator);
this.actor.label_actor = this.label;
}
});
const InputSource = new Lang.Class({
Name: 'InputSource',
_init: function(type, id, displayName, shortName, index) {
this.type = type;
this.id = id;
this.displayName = displayName;
this._shortName = shortName;
this.index = index;
this._menuItem = new LayoutMenuItem(this.displayName, this._shortName);
this._menuItem.connect('activate', Lang.bind(this, this.activate));
this._indicatorLabel = new St.Label({ text: this._shortName });
this.properties = null;
},
destroy: function() {
this._menuItem.destroy();
this._indicatorLabel.destroy();
},
get shortName() {
return this._shortName;
},
set shortName(v) {
this._shortName = v;
this._menuItem.indicator.set_text(v);
this._indicatorLabel.set_text(v);
},
get menuItem() {
return this._menuItem;
},
get indicatorLabel() {
return this._indicatorLabel;
},
activate: function() {
this.emit('activate');
},
});
Signals.addSignalMethods(InputSource.prototype);
const InputSourcePopup = new Lang.Class({
Name: 'InputSourcePopup',
Extends: SwitcherPopup.SwitcherPopup,
_init: function(items, action, actionBackward) {
this.parent(items);
this._action = action;
this._actionBackward = actionBackward;
},
_createSwitcher: function() {
this._switcherList = new InputSourceSwitcher(this._items);
return true;
},
_initialSelection: function(backward, binding) {
if (binding == 'switch-input-source') {
if (backward)
this._selectedIndex = this._items.length - 1;
} else if (binding == 'switch-input-source-backward') {
if (!backward)
this._selectedIndex = this._items.length - 1;
}
this._select(this._selectedIndex);
},
_keyPressHandler: function(keysym, backwards, action) {
if (action == this._action)
this._select(backwards ? this._previous() : this._next());
else if (action == this._actionBackward)
this._select(backwards ? this._next() : this._previous());
else if (keysym == Clutter.Left)
this._select(this._previous());
else if (keysym == Clutter.Right)
this._select(this._next());
},
_finish : function() {
this.parent();
this._items[this._selectedIndex].activate();
},
});
const InputSourceSwitcher = new Lang.Class({
Name: 'InputSourceSwitcher',
Extends: SwitcherPopup.SwitcherList,
_init: function(items) {
this.parent(true);
for (let i = 0; i < items.length; i++)
this._addIcon(items[i]);
},
_addIcon: function(item) {
let box = new St.BoxLayout({ vertical: true });
let bin = new St.Bin({ style_class: 'input-source-switcher-symbol' });
let symbol = new St.Label({ text: item.shortName });
bin.set_child(symbol);
box.add(bin, { x_fill: false, y_fill: false } );
let text = new St.Label({ text: item.displayName });
box.add(text, { x_fill: false });
this.addItem(box, text);
}
});
const InputSourceIndicator = new Lang.Class({
Name: 'InputSourceIndicator',
Extends: PanelMenu.Button,
_init: function() {
this.parent(0.0, _("Keyboard"));
this._container = new Shell.GenericContainer();
this._container.connect('get-preferred-width', Lang.bind(this, this._containerGetPreferredWidth));
this._container.connect('get-preferred-height', Lang.bind(this, this._containerGetPreferredHeight));
this._container.connect('allocate', Lang.bind(this, this._containerAllocate));
this._hbox = new St.BoxLayout({ style_class: 'panel-status-menu-box' });
this._hbox.add_child(this._container);
this._hbox.add_child(PopupMenu.unicodeArrow(St.Side.BOTTOM));
this.actor.add_child(this._hbox);
this.actor.add_style_class_name('panel-status-button');
// All valid input sources currently in the gsettings
// KEY_INPUT_SOURCES list indexed by their index there
this._inputSources = {};
// All valid input sources currently in the gsettings
// KEY_INPUT_SOURCES list of type INPUT_SOURCE_TYPE_IBUS
// indexed by the IBus ID
this._ibusSources = {};
this._currentSource = null;
// All valid input sources currently in the gsettings
// KEY_INPUT_SOURCES list ordered by most recently used
this._mruSources = [];
this._keybindingAction =
Main.wm.addKeybinding('switch-input-source',
new Gio.Settings({ schema: "org.gnome.desktop.wm.keybindings" }),
Meta.KeyBindingFlags.REVERSES,
Shell.KeyBindingMode.ALL,
Lang.bind(this, this._switchInputSource));
this._keybindingActionBackward =
Main.wm.addKeybinding('switch-input-source-backward',
new Gio.Settings({ schema: "org.gnome.desktop.wm.keybindings" }),
Meta.KeyBindingFlags.REVERSES |
Meta.KeyBindingFlags.REVERSED,
Shell.KeyBindingMode.ALL,
Lang.bind(this, this._switchInputSource));
this._settings = new Gio.Settings({ schema: DESKTOP_INPUT_SOURCES_SCHEMA });
this._settings.connect('changed::' + KEY_CURRENT_INPUT_SOURCE, Lang.bind(this, this._currentInputSourceChanged));
this._settings.connect('changed::' + KEY_INPUT_SOURCES, Lang.bind(this, this._inputSourcesChanged));
this._xkbInfo = new GnomeDesktop.XkbInfo();
this._propSeparator = new PopupMenu.PopupSeparatorMenuItem();
this.menu.addMenuItem(this._propSeparator);
this._propSection = new PopupMenu.PopupMenuSection();
this.menu.addMenuItem(this._propSection);
this._propSection.actor.hide();
this._ibusReady = false;
this._ibusManager = new IBusManager(Lang.bind(this, this._ibusReadyCallback));
this._ibusManager.connect('properties-registered', Lang.bind(this, this._ibusPropertiesRegistered));
this._ibusManager.connect('property-updated', Lang.bind(this, this._ibusPropertyUpdated));
this._inputSourcesChanged();
this._keyboardManager = new KeyboardManagerProxy(Gio.DBus.session, BUS_NAME, OBJECT_PATH,
function(proxy, error) {
if (error)
log(error.message);
});
this._keyboardManager.g_default_timeout = MAX_INPUT_SOURCE_ACTIVATION_TIME;
global.display.connect('modifiers-accelerator-activated', Lang.bind(this, this._modifiersSwitcher));
this.menu.addMenuItem(new PopupMenu.PopupSeparatorMenuItem());
this._showLayoutItem = this.menu.addAction(_("Show Keyboard Layout"), Lang.bind(this, this._showLayout));
Main.sessionMode.connect('updated', Lang.bind(this, this._sessionUpdated));
this._sessionUpdated();
this._sourcesPerWindow = false;
this._focusWindowNotifyId = 0;
this._overviewShowingId = 0;
this._overviewHiddenId = 0;
this._settings.connect('changed::per-window', Lang.bind(this, this._sourcesPerWindowChanged));
this._sourcesPerWindowChanged();
},
_sessionUpdated: function() {
// re-using "allowSettings" for the keyboard layout is a bit shady,
// but at least for now it is used as "allow popping up windows
// from shell menus"; we can always add a separate sessionMode
// option if need arises.
this._showLayoutItem.actor.visible = Main.sessionMode.allowSettings;
},
_ibusReadyCallback: function(ready) {
if (this._ibusReady == ready)
return;
this._ibusReady = ready;
this._mruSources = [];
this._inputSourcesChanged();
},
_modifiersSwitcher: function() {
let sourceIndexes = Object.keys(this._inputSources);
if (sourceIndexes.length == 0) {
releaseKeyboard();
return true;
}
let is = this._currentSource;
if (!is)
is = this._inputSources[sourceIndexes[0]];
let nextIndex = is.index + 1;
if (nextIndex > sourceIndexes[sourceIndexes.length - 1])
nextIndex = 0;
while (!(is = this._inputSources[nextIndex]))
nextIndex += 1;
is.activate();
return true;
},
_switchInputSource: function(display, screen, window, binding) {
if (this._mruSources.length < 2)
return;
// HACK: Fall back on simple input source switching since we
// can't show a popup switcher while a GrabHelper grab is in
// effect without considerable work to consolidate the usage
// of pushModal/popModal and grabHelper. See
// https://bugzilla.gnome.org/show_bug.cgi?id=695143 .
if (Main.keybindingMode == Shell.KeyBindingMode.MESSAGE_TRAY ||
Main.keybindingMode == Shell.KeyBindingMode.TOPBAR_POPUP) {
this._modifiersSwitcher();
return;
}
let popup = new InputSourcePopup(this._mruSources, this._keybindingAction, this._keybindingActionBackward);
let modifiers = binding.get_modifiers();
let backwards = modifiers & Meta.VirtualModifier.SHIFT_MASK;
if (!popup.show(backwards, binding.get_name(), binding.get_mask()))
popup.destroy();
},
_currentInputSourceChanged: function() {
let nVisibleSources = Object.keys(this._inputSources).length;
let newSourceIndex = this._settings.get_uint(KEY_CURRENT_INPUT_SOURCE);
let newSource = this._inputSources[newSourceIndex];
let oldSource;
[oldSource, this._currentSource] = [this._currentSource, newSource];
if (oldSource) {
oldSource.menuItem.setOrnament(PopupMenu.Ornament.NONE);
oldSource.indicatorLabel.hide();
}
if (!newSource || (nVisibleSources < 2 && !newSource.properties)) {
// This source index might be invalid if we weren't able
// to build a menu item for it, so we hide ourselves since
// we can't fix it here. *shrug*
// We also hide if we have only one visible source unless
// it's an IBus source with properties.
this.menu.close();
this.actor.hide();
return;
}
this.actor.show();
newSource.menuItem.setOrnament(PopupMenu.Ornament.DOT);
newSource.indicatorLabel.show();
this._buildPropSection(newSource.properties);
for (let i = 1; i < this._mruSources.length; ++i)
if (this._mruSources[i] == newSource) {
let currentSource = this._mruSources.splice(i, 1);
this._mruSources = currentSource.concat(this._mruSources);
break;
}
this._changePerWindowSource();
},
_inputSourcesChanged: function() {
let sources = this._settings.get_value(KEY_INPUT_SOURCES);
let nSources = sources.n_children();
for (let i in this._inputSources)
this._inputSources[i].destroy();
this._inputSources = {};
this._ibusSources = {};
this._currentSource = null;
let inputSourcesByShortName = {};
for (let i = 0; i < nSources; i++) {
let displayName;
let shortName;
let [type, id] = sources.get_child_value(i).deep_unpack();
let exists = false;
if (type == INPUT_SOURCE_TYPE_XKB) {
[exists, displayName, shortName, , ] =
this._xkbInfo.get_layout_info(id);
} else if (type == INPUT_SOURCE_TYPE_IBUS) {
let engineDesc = this._ibusManager.getEngineDesc(id);
if (engineDesc) {
let language = IBus.get_language_name(engineDesc.get_language());
let longName = engineDesc.get_longname();
let textdomain = engineDesc.get_textdomain();
if (textdomain != '')
longName = Gettext.dgettext(textdomain, longName);
exists = true;
displayName = '%s (%s)'.format(language, longName);
shortName = this._makeEngineShortName(engineDesc);
}
}
if (!exists)
continue;
let is = new InputSource(type, id, displayName, shortName, i);
is.connect('activate', Lang.bind(this, function() {
holdKeyboard();
this._keyboardManager.SetInputSourceRemote(is.index, releaseKeyboard);
}));
if (!(is.shortName in inputSourcesByShortName))
inputSourcesByShortName[is.shortName] = [];
inputSourcesByShortName[is.shortName].push(is);
this._inputSources[is.index] = is;
if (is.type == INPUT_SOURCE_TYPE_IBUS)
this._ibusSources[is.id] = is;
}
let menuIndex = 0;
for (let i in this._inputSources) {
let is = this._inputSources[i];
if (inputSourcesByShortName[is.shortName].length > 1) {
let sub = inputSourcesByShortName[is.shortName].indexOf(is) + 1;
is.shortName += String.fromCharCode(0x2080 + sub);
}
this.menu.addMenuItem(is.menuItem, menuIndex++);
is.indicatorLabel.hide();
this._container.add_actor(is.indicatorLabel);
}
let sourcesList = [];
for (let i in this._inputSources)
sourcesList.push(this._inputSources[i]);
let mruSources = [];
for (let i = 0; i < this._mruSources.length; i++) {
for (let j = 0; j < sourcesList.length; j++)
if (this._mruSources[i].type == sourcesList[j].type &&
this._mruSources[i].id == sourcesList[j].id) {
mruSources = mruSources.concat(sourcesList.splice(j, 1));
break;
}
}
this._mruSources = mruSources.concat(sourcesList);
this._currentInputSourceChanged();
},
_showLayout: function() {
Main.overview.hide();
let source = this._currentSource;
let xkbLayout = '';
let xkbVariant = '';
if (source.type == INPUT_SOURCE_TYPE_XKB) {
[, , , xkbLayout, xkbVariant] = this._xkbInfo.get_layout_info(source.id);
} else if (source.type == INPUT_SOURCE_TYPE_IBUS) {
let engineDesc = this._ibusManager.getEngineDesc(source.id);
if (engineDesc) {
xkbLayout = engineDesc.get_layout();
xkbVariant = '';
}
}
if (!xkbLayout || xkbLayout.length == 0)
return;
let description = xkbLayout;
if (xkbVariant.length > 0)
description = description + '\t' + xkbVariant;
Util.spawn(['gkbd-keyboard-display', '-l', description]);
},
_makeEngineShortName: function(engineDesc) {
let symbol = engineDesc.get_symbol();
if (symbol && symbol[0])
return symbol;
let langCode = engineDesc.get_language().split('_', 1)[0];
if (langCode.length == 2 || langCode.length == 3)
return langCode.toLowerCase();
return String.fromCharCode(0x2328); // keyboard glyph
},
_ibusPropertiesRegistered: function(im, engineName, props) {
let source = this._ibusSources[engineName];
if (!source)
return;
source.properties = props;
if (source == this._currentSource)
this._currentInputSourceChanged();
},
_ibusPropertyUpdated: function(im, engineName, prop) {
let source = this._ibusSources[engineName];
if (!source)
return;
if (this._updateSubProperty(source.properties, prop) &&
source == this._currentSource)
this._currentInputSourceChanged();
},
_updateSubProperty: function(props, prop) {
if (!props)
return false;
let p;
for (let i = 0; (p = props.get(i)) != null; ++i) {
if (p.get_key() == prop.get_key() && p.get_prop_type() == prop.get_prop_type()) {
p.update(prop);
return true;
} else if (p.get_prop_type() == IBus.PropType.MENU) {
if (this._updateSubProperty(p.get_sub_props(), prop))
return true;
}
}
return false;
},
_buildPropSection: function(properties) {
this._propSeparator.actor.hide();
this._propSection.actor.hide();
this._propSection.removeAll();
this._buildPropSubMenu(this._propSection, properties);
if (!this._propSection.isEmpty()) {
this._propSection.actor.show();
this._propSeparator.actor.show();
}
},
_buildPropSubMenu: function(menu, props) {
if (!props)
return;
let radioGroup = [];
let p;
for (let i = 0; (p = props.get(i)) != null; ++i) {
let prop = p;
if (!prop.get_visible())
continue;
if (prop.get_key() == 'InputMode') {
let text;
if (prop.get_symbol)
text = prop.get_symbol().get_text();
else
text = prop.get_label().get_text();
if (text && text.length > 0 && text.length < 3)
this._currentSource.indicatorLabel.set_text(text);
}
let item;
switch (prop.get_prop_type()) {
case IBus.PropType.MENU:
item = new PopupMenu.PopupSubMenuMenuItem(prop.get_label().get_text());
this._buildPropSubMenu(item.menu, prop.get_sub_props());
break;
case IBus.PropType.RADIO:
item = new PopupMenu.PopupMenuItem(prop.get_label().get_text());
item.prop = prop;
radioGroup.push(item);
item.radioGroup = radioGroup;
item.setOrnament(prop.get_state() == IBus.PropState.CHECKED ?
PopupMenu.Ornament.DOT : PopupMenu.Ornament.NONE);
item.connect('activate', Lang.bind(this, function() {
if (item.prop.get_state() == IBus.PropState.CHECKED)
return;
let group = item.radioGroup;
for (let i = 0; i < group.length; ++i) {
if (group[i] == item) {
item.setOrnament(PopupMenu.Ornament.DOT);
item.prop.set_state(IBus.PropState.CHECKED);
this._ibusManager.activateProperty(item.prop.get_key(),
IBus.PropState.CHECKED);
} else {
group[i].setOrnament(PopupMenu.Ornament.NONE);
group[i].prop.set_state(IBus.PropState.UNCHECKED);
this._ibusManager.activateProperty(group[i].prop.get_key(),
IBus.PropState.UNCHECKED);
}
}
}));
break;
case IBus.PropType.TOGGLE:
item = new PopupMenu.PopupSwitchMenuItem(prop.get_label().get_text(), prop.get_state() == IBus.PropState.CHECKED);
item.prop = prop;
item.connect('toggled', Lang.bind(this, function() {
if (item.state) {
item.prop.set_state(IBus.PropState.CHECKED);
this._ibusManager.activateProperty(item.prop.get_key(),
IBus.PropState.CHECKED);
} else {
item.prop.set_state(IBus.PropState.UNCHECKED);
this._ibusManager.activateProperty(item.prop.get_key(),
IBus.PropState.UNCHECKED);
}
}));
break;
case IBus.PropType.NORMAL:
item = new PopupMenu.PopupMenuItem(prop.get_label().get_text());
item.prop = prop;
item.connect('activate', Lang.bind(this, function() {
this._ibusManager.activateProperty(item.prop.get_key(),
item.prop.get_state());
}));
break;
case IBus.PropType.SEPARATOR:
item = new PopupMenu.PopupSeparatorMenuItem();
break;
default:
log ('IBus property %s has invalid type %d'.format(prop.get_key(), type));
continue;
}
item.setSensitive(prop.get_sensitive());
menu.addMenuItem(item);
}
},
_getNewInputSource: function(current) {
for (let i in this._inputSources) {
let is = this._inputSources[i];
if (is.type == current.type &&
is.id == current.id)
return is;
}
return this._currentSource;
},
_getCurrentWindow: function() {
if (Main.overview.visible)
return Main.overview;
else
return global.display.focus_window;
},
_setPerWindowInputSource: function() {
let window = this._getCurrentWindow();
if (!window)
return;
if (!window._inputSources) {
window._inputSources = this._inputSources;
window._currentSource = this._currentSource;
} else if (window._inputSources == this._inputSources) {
window._currentSource.activate();
} else {
window._inputSources = this._inputSources;
window._currentSource = this._getNewInputSource(window._currentSource);
window._currentSource.activate();
}
},
_sourcesPerWindowChanged: function() {
this._sourcesPerWindow = this._settings.get_boolean('per-window');
if (this._sourcesPerWindow && this._focusWindowNotifyId == 0) {
this._focusWindowNotifyId = global.display.connect('notify::focus-window',
Lang.bind(this, this._setPerWindowInputSource));
this._overviewShowingId = Main.overview.connect('showing',
Lang.bind(this, this._setPerWindowInputSource));
this._overviewHiddenId = Main.overview.connect('hidden',
Lang.bind(this, this._setPerWindowInputSource));
} else if (!this._sourcesPerWindow && this._focusWindowNotifyId != 0) {
global.display.disconnect(this._focusWindowNotifyId);
this._focusWindowNotifyId = 0;
Main.overview.disconnect(this._overviewShowingId);
this._overviewShowingId = 0;
Main.overview.disconnect(this._overviewHiddenId);
this._overviewHiddenId = 0;
let windows = global.get_window_actors().map(function(w) {
return w.meta_window;
});
for (let i = 0; i < windows.length; ++i) {
delete windows[i]._inputSources;
delete windows[i]._currentSource;
}
delete Main.overview._inputSources;
delete Main.overview._currentSource;
}
},
_changePerWindowSource: function() {
if (!this._sourcesPerWindow)
return;
let window = this._getCurrentWindow();
if (!window)
return;
window._inputSources = this._inputSources;
window._currentSource = this._currentSource;
},
_containerGetPreferredWidth: function(container, for_height, alloc) {
// Here, and in _containerGetPreferredHeight, we need to query
// for the height of all children, but we ignore the results
// for those we don't actually display.
let max_min_width = 0, max_natural_width = 0;
for (let i in this._inputSources) {
let is = this._inputSources[i];
let [min_width, natural_width] = is.indicatorLabel.get_preferred_width(for_height);
max_min_width = Math.max(max_min_width, min_width);
max_natural_width = Math.max(max_natural_width, natural_width);
}
alloc.min_size = max_min_width;
alloc.natural_size = max_natural_width;
},
_containerGetPreferredHeight: function(container, for_width, alloc) {
let max_min_height = 0, max_natural_height = 0;
for (let i in this._inputSources) {
let is = this._inputSources[i];
let [min_height, natural_height] = is.indicatorLabel.get_preferred_height(for_width);
max_min_height = Math.max(max_min_height, min_height);
max_natural_height = Math.max(max_natural_height, natural_height);
}
alloc.min_size = max_min_height;
alloc.natural_size = max_natural_height;
},
_containerAllocate: function(container, box, flags) {
// translate box to (0, 0)
box.x2 -= box.x1;
box.x1 = 0;
box.y2 -= box.y1;
box.y1 = 0;
for (let i in this._inputSources) {
let is = this._inputSources[i];
is.indicatorLabel.allocate_align_fill(box, 0.5, 0.5, false, false, flags);
}
}
});