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// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
/* exported ATIndicator */
const { Gio, GLib, GObject, St } = imports.gi;
const PanelMenu = imports.ui.panelMenu;
const PopupMenu = imports.ui.popupMenu;
const A11Y_SCHEMA = 'org.gnome.desktop.a11y';
const KEY_ALWAYS_SHOW = 'always-show-universal-access-status';
const A11Y_KEYBOARD_SCHEMA = 'org.gnome.desktop.a11y.keyboard';
const KEY_STICKY_KEYS_ENABLED = 'stickykeys-enable';
const KEY_BOUNCE_KEYS_ENABLED = 'bouncekeys-enable';
const KEY_SLOW_KEYS_ENABLED = 'slowkeys-enable';
const KEY_MOUSE_KEYS_ENABLED = 'mousekeys-enable';
const APPLICATIONS_SCHEMA = 'org.gnome.desktop.a11y.applications';
var DPI_FACTOR_LARGE = 1.25;
const WM_SCHEMA = 'org.gnome.desktop.wm.preferences';
const KEY_VISUAL_BELL = 'visual-bell';
const DESKTOP_INTERFACE_SCHEMA = 'org.gnome.desktop.interface';
const KEY_GTK_THEME = 'gtk-theme';
const KEY_ICON_THEME = 'icon-theme';
const KEY_TEXT_SCALING_FACTOR = 'text-scaling-factor';
const HIGH_CONTRAST_THEME = 'HighContrast';
var ATIndicator = GObject.registerClass(
class ATIndicator extends PanelMenu.Button {
_init() {
super._init(0.5, _("Accessibility"));
this._hbox = new St.BoxLayout({ style_class: 'panel-status-menu-box' });
this._hbox.add_child(new St.Icon({ style_class: 'system-status-icon',
icon_name: 'preferences-desktop-accessibility-symbolic' }));
this._hbox.add_child(PopupMenu.arrowIcon(St.Side.BOTTOM));
this.add_child(this._hbox);
this._a11ySettings = new Gio.Settings({ schema_id: A11Y_SCHEMA });
this._a11ySettings.connect('changed::%s'.format(KEY_ALWAYS_SHOW), this._queueSyncMenuVisibility.bind(this));
let highContrast = this._buildHCItem();
this.menu.addMenuItem(highContrast);
let magnifier = this._buildItem(_("Zoom"), APPLICATIONS_SCHEMA,
'screen-magnifier-enabled');
this.menu.addMenuItem(magnifier);
let textZoom = this._buildFontItem();
this.menu.addMenuItem(textZoom);
let screenReader = this._buildItem(_("Screen Reader"), APPLICATIONS_SCHEMA,
'screen-reader-enabled');
this.menu.addMenuItem(screenReader);
let screenKeyboard = this._buildItem(_("Screen Keyboard"), APPLICATIONS_SCHEMA,
'screen-keyboard-enabled');
this.menu.addMenuItem(screenKeyboard);
let visualBell = this._buildItem(_("Visual Alerts"), WM_SCHEMA, KEY_VISUAL_BELL);
this.menu.addMenuItem(visualBell);
let stickyKeys = this._buildItem(_("Sticky Keys"), A11Y_KEYBOARD_SCHEMA, KEY_STICKY_KEYS_ENABLED);
this.menu.addMenuItem(stickyKeys);
let slowKeys = this._buildItem(_("Slow Keys"), A11Y_KEYBOARD_SCHEMA, KEY_SLOW_KEYS_ENABLED);
this.menu.addMenuItem(slowKeys);
let bounceKeys = this._buildItem(_("Bounce Keys"), A11Y_KEYBOARD_SCHEMA, KEY_BOUNCE_KEYS_ENABLED);
this.menu.addMenuItem(bounceKeys);
let mouseKeys = this._buildItem(_("Mouse Keys"), A11Y_KEYBOARD_SCHEMA, KEY_MOUSE_KEYS_ENABLED);
this.menu.addMenuItem(mouseKeys);
this._syncMenuVisibility();
}
_syncMenuVisibility() {
this._syncMenuVisibilityIdle = 0;
let alwaysShow = this._a11ySettings.get_boolean(KEY_ALWAYS_SHOW);
let items = this.menu._getMenuItems();
this.visible = alwaysShow || items.some(f => !!f.state);
return GLib.SOURCE_REMOVE;
}
_queueSyncMenuVisibility() {
if (this._syncMenuVisibilityIdle)
return;
this._syncMenuVisibilityIdle = GLib.idle_add(GLib.PRIORITY_DEFAULT, this._syncMenuVisibility.bind(this));
GLib.Source.set_name_by_id(this._syncMenuVisibilityIdle, '[gnome-shell] this._syncMenuVisibility');
}
_buildItemExtended(string, initialValue, writable, onSet) {
let widget = new PopupMenu.PopupSwitchMenuItem(string, initialValue);
if (!writable) {
widget.reactive = false;
} else {
widget.connect('toggled', item => {
onSet(item.state);
});
}
return widget;
}
_buildItem(string, schema, key) {
let settings = new Gio.Settings({ schema_id: schema });
let widget = this._buildItemExtended(string,
settings.get_boolean(key),
settings.is_writable(key),
enabled => settings.set_boolean(key, enabled));
settings.connect('changed::%s'.format(key), () => {
widget.setToggleState(settings.get_boolean(key));
this._queueSyncMenuVisibility();
});
return widget;
}
_buildHCItem() {
let interfaceSettings = new Gio.Settings({ schema_id: DESKTOP_INTERFACE_SCHEMA });
let gtkTheme = interfaceSettings.get_string(KEY_GTK_THEME);
let iconTheme = interfaceSettings.get_string(KEY_ICON_THEME);
let hasHC = gtkTheme == HIGH_CONTRAST_THEME;
let highContrast = this._buildItemExtended(
_("High Contrast"),
hasHC,
interfaceSettings.is_writable(KEY_GTK_THEME) &&
interfaceSettings.is_writable(KEY_ICON_THEME),
enabled => {
if (enabled) {
interfaceSettings.set_string(KEY_ICON_THEME, HIGH_CONTRAST_THEME);
interfaceSettings.set_string(KEY_GTK_THEME, HIGH_CONTRAST_THEME);
} else if (!hasHC) {
interfaceSettings.set_string(KEY_ICON_THEME, iconTheme);
interfaceSettings.set_string(KEY_GTK_THEME, gtkTheme);
} else {
interfaceSettings.reset(KEY_ICON_THEME);
interfaceSettings.reset(KEY_GTK_THEME);
}
});
interfaceSettings.connect('changed::%s'.format(KEY_GTK_THEME), () => {
let value = interfaceSettings.get_string(KEY_GTK_THEME);
if (value == HIGH_CONTRAST_THEME) {
highContrast.setToggleState(true);
} else {
highContrast.setToggleState(false);
gtkTheme = value;
}
this._queueSyncMenuVisibility();
});
interfaceSettings.connect('changed::%s'.format(KEY_ICON_THEME), () => {
let value = interfaceSettings.get_string(KEY_ICON_THEME);
if (value != HIGH_CONTRAST_THEME)
iconTheme = value;
});
return highContrast;
}
_buildFontItem() {
let settings = new Gio.Settings({ schema_id: DESKTOP_INTERFACE_SCHEMA });
let factor = settings.get_double(KEY_TEXT_SCALING_FACTOR);
let initialSetting = factor > 1.0;
let widget = this._buildItemExtended(_("Large Text"),
initialSetting,
settings.is_writable(KEY_TEXT_SCALING_FACTOR),
enabled => {
if (enabled) {
settings.set_double(
KEY_TEXT_SCALING_FACTOR, DPI_FACTOR_LARGE);
} else {
settings.reset(KEY_TEXT_SCALING_FACTOR);
}
});
settings.connect('changed::%s'.format(KEY_TEXT_SCALING_FACTOR), () => {
factor = settings.get_double(KEY_TEXT_SCALING_FACTOR);
let active = factor > 1.0;
widget.setToggleState(active);
this._queueSyncMenuVisibility();
});
return widget;
}
});
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