gnome-shell/js/ui/panelMenu.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 Gtk = imports.gi.Gtk;
const Lang = imports.lang;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const St = imports.gi.St;
const Atk = imports.gi.Atk;
const Main = imports.ui.main;
const Params = imports.misc.params;
const PopupMenu = imports.ui.popupMenu;
var ButtonBox = new Lang.Class({
Name: 'ButtonBox',
_init(params) {
params = Params.parse(params, { style_class: 'panel-button' }, true);
this.actor = new Shell.GenericContainer(params);
this.actor._delegate = this;
this.container = new St.Bin({ y_fill: true,
x_fill: true,
child: this.actor });
this.actor.connect('get-preferred-width', this._getPreferredWidth.bind(this));
this.actor.connect('get-preferred-height', this._getPreferredHeight.bind(this));
this.actor.connect('allocate', this._allocate.bind(this));
this.actor.connect('style-changed', this._onStyleChanged.bind(this));
this._minHPadding = this._natHPadding = 0.0;
},
_onStyleChanged(actor) {
let themeNode = actor.get_theme_node();
this._minHPadding = themeNode.get_length('-minimum-hpadding');
this._natHPadding = themeNode.get_length('-natural-hpadding');
},
_getPreferredWidth(actor, forHeight, alloc) {
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let child = actor.get_first_child();
if (child) {
[alloc.min_size, alloc.natural_size] = child.get_preferred_width(-1);
} else {
alloc.min_size = alloc.natural_size = 0;
}
alloc.min_size += 2 * this._minHPadding;
alloc.natural_size += 2 * this._natHPadding;
},
_getPreferredHeight(actor, forWidth, alloc) {
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let child = actor.get_first_child();
if (child) {
[alloc.min_size, alloc.natural_size] = child.get_preferred_height(-1);
} else {
alloc.min_size = alloc.natural_size = 0;
}
},
_allocate(actor, box, flags) {
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let child = actor.get_first_child();
if (!child)
return;
let [minWidth, natWidth] = child.get_preferred_width(-1);
let availWidth = box.x2 - box.x1;
let availHeight = box.y2 - box.y1;
let childBox = new Clutter.ActorBox();
if (natWidth + 2 * this._natHPadding <= availWidth) {
childBox.x1 = this._natHPadding;
childBox.x2 = availWidth - this._natHPadding;
} else {
childBox.x1 = this._minHPadding;
childBox.x2 = availWidth - this._minHPadding;
}
childBox.y1 = 0;
childBox.y2 = availHeight;
child.allocate(childBox, flags);
},
});
var Button = new Lang.Class({
Name: 'PanelMenuButton',
Extends: ButtonBox,
_init(menuAlignment, nameText, dontCreateMenu) {
this.parent({ reactive: true,
can_focus: true,
track_hover: true,
accessible_name: nameText ? nameText : "",
accessible_role: Atk.Role.MENU });
this.actor.connect('event', this._onEvent.bind(this));
this.actor.connect('notify::visible', this._onVisibilityChanged.bind(this));
if (dontCreateMenu)
this.menu = new PopupMenu.PopupDummyMenu(this.actor);
else
this.setMenu(new PopupMenu.PopupMenu(this.actor, menuAlignment, St.Side.TOP, 0));
},
setSensitive(sensitive) {
this.actor.reactive = sensitive;
this.actor.can_focus = sensitive;
this.actor.track_hover = sensitive;
},
setMenu(menu) {
if (this.menu)
this.menu.destroy();
this.menu = menu;
if (this.menu) {
this.menu.actor.add_style_class_name('panel-menu');
this.menu.connect('open-state-changed', this._onOpenStateChanged.bind(this));
this.menu.actor.connect('key-press-event', this._onMenuKeyPress.bind(this));
Main.uiGroup.add_actor(this.menu.actor);
this.menu.actor.hide();
}
this.emit('menu-set');
},
_onEvent(actor, event) {
if (this.menu &&
(event.type() == Clutter.EventType.TOUCH_BEGIN ||
event.type() == Clutter.EventType.BUTTON_PRESS))
this.menu.toggle();
return Clutter.EVENT_PROPAGATE;
},
_onVisibilityChanged() {
if (!this.menu)
return;
if (!this.actor.visible)
this.menu.close();
},
_onMenuKeyPress(actor, event) {
if (global.focus_manager.navigate_from_event(event))
return Clutter.EVENT_STOP;
let symbol = event.get_key_symbol();
if (symbol == Clutter.KEY_Left || symbol == Clutter.KEY_Right) {
let group = global.focus_manager.get_group(this.actor);
if (group) {
let direction = (symbol == Clutter.KEY_Left) ? Gtk.DirectionType.LEFT : Gtk.DirectionType.RIGHT;
group.navigate_focus(this.actor, direction, false);
return Clutter.EVENT_STOP;
}
}
return Clutter.EVENT_PROPAGATE;
},
_onOpenStateChanged(menu, open) {
if (open)
this.actor.add_style_pseudo_class('active');
else
this.actor.remove_style_pseudo_class('active');
// Setting the max-height won't do any good if the minimum height of the
// menu is higher then the screen; it's useful if part of the menu is
// scrollable so the minimum height is smaller than the natural height
let workArea = Main.layoutManager.getWorkAreaForMonitor(Main.layoutManager.primaryIndex);
let scaleFactor = St.ThemeContext.get_for_stage(global.stage).scale_factor;
let verticalMargins = this.menu.actor.margin_top + this.menu.actor.margin_bottom;
// The workarea and margin dimensions are in physical pixels, but CSS
// measures are in logical pixels, so make sure to consider the scale
// factor when computing max-height
let maxHeight = Math.round((workArea.height - verticalMargins) / scaleFactor);
this.menu.actor.style = ('max-height: %spx;').format(maxHeight);
},
destroy() {
this.actor._delegate = null;
if (this.menu)
this.menu.destroy();
this.actor.destroy();
this.emit('destroy');
}
});
Signals.addSignalMethods(Button.prototype);
/* SystemIndicator:
*
* This class manages one system indicator, which are the icons
* that you see at the top right. A system indicator is composed
* of an icon and a menu section, which will be composed into the
* aggregate menu.
*/
var SystemIndicator = new Lang.Class({
Name: 'SystemIndicator',
_init() {
this.indicators = new St.BoxLayout({ style_class: 'panel-status-indicators-box',
reactive: true });
this.indicators.hide();
this.menu = new PopupMenu.PopupMenuSection();
},
_syncIndicatorsVisible() {
this.indicators.visible = this.indicators.get_children().some(a => a.visible);
},
_addIndicator() {
let icon = new St.Icon({ style_class: 'system-status-icon' });
this.indicators.add_actor(icon);
icon.connect('notify::visible', this._syncIndicatorsVisible.bind(this));
this._syncIndicatorsVisible();
return icon;
}
});
Signals.addSignalMethods(SystemIndicator.prototype);