gnome-shell/js/ui/modalDialog.js
Giovanni Campagna c0652bcd8f ScreenShield: implement curtain design
This separates the screen shield into two main screens. One is
the lock screen, and it is shown when coming back from idle status
and when failing authentication. The other is the actual unlock
dialog.
Moving from the first to the second is possible by pressing Escape
or by dragging an arrow on the bottom on the screen.

https://bugzilla.gnome.org/show_bug.cgi?id=619955
2012-07-21 15:40:28 +02:00

327 lines
11 KiB
JavaScript

// -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
const Clutter = imports.gi.Clutter;
const Gdk = imports.gi.Gdk;
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Lang = imports.lang;
const Meta = imports.gi.Meta;
const Pango = imports.gi.Pango;
const St = imports.gi.St;
const Shell = imports.gi.Shell;
const Signals = imports.signals;
const Atk = imports.gi.Atk;
const Params = imports.misc.params;
const Lightbox = imports.ui.lightbox;
const Main = imports.ui.main;
const Tweener = imports.ui.tweener;
const OPEN_AND_CLOSE_TIME = 0.1;
const FADE_IN_BUTTONS_TIME = 0.33;
const FADE_OUT_DIALOG_TIME = 1.0;
const State = {
OPENED: 0,
CLOSED: 1,
OPENING: 2,
CLOSING: 3,
FADED_OUT: 4
};
const ModalDialog = new Lang.Class({
Name: 'ModalDialog',
_init: function(params) {
params = Params.parse(params, { shellReactive: false,
styleClass: null,
parentActor: Main.uiGroup
});
this.state = State.CLOSED;
this._hasModal = false;
this._shellReactive = params.shellReactive;
this._group = new St.Widget({ visible: false,
x: 0,
y: 0,
accessible_role: Atk.Role.DIALOG });
params.parentActor.add_actor(this._group);
let constraint = new Clutter.BindConstraint({ source: global.stage,
coordinate: Clutter.BindCoordinate.ALL });
this._group.add_constraint(constraint);
this._group.connect('destroy', Lang.bind(this, this._onGroupDestroy));
this._actionKeys = {};
this._group.connect('key-press-event', Lang.bind(this, this._onKeyPressEvent));
this._backgroundBin = new St.Bin();
this._group.add_actor(this._backgroundBin);
this._dialogLayout = new St.BoxLayout({ style_class: 'modal-dialog',
vertical: true });
if (params.styleClass != null) {
this._dialogLayout.add_style_class_name(params.styleClass);
}
if (!this._shellReactive) {
this._lightbox = new Lightbox.Lightbox(this._group,
{ inhibitEvents: true });
this._lightbox.highlight(this._backgroundBin);
let stack = new Shell.Stack();
this._backgroundBin.child = stack;
this._eventBlocker = new Clutter.Group({ reactive: true });
stack.add_actor(this._eventBlocker);
stack.add_actor(this._dialogLayout);
} else {
this._backgroundBin.child = this._dialogLayout;
}
this.contentLayout = new St.BoxLayout({ vertical: true });
this._dialogLayout.add(this.contentLayout,
{ x_fill: true,
y_fill: true,
x_align: St.Align.MIDDLE,
y_align: St.Align.START });
this._buttonLayout = new St.BoxLayout({ style_class: 'modal-dialog-button-box',
visible: false,
vertical: false });
this._dialogLayout.add(this._buttonLayout,
{ expand: true,
x_align: St.Align.MIDDLE,
y_align: St.Align.END });
global.focus_manager.add_group(this._dialogLayout);
this._initialKeyFocus = this._dialogLayout;
this._initialKeyFocusDestroyId = 0;
this._savedKeyFocus = null;
},
destroy: function() {
this._group.destroy();
},
setButtons: function(buttons) {
let hadChildren = this._buttonLayout.get_children() > 0;
this._buttonLayout.destroy_all_children();
this._actionKeys = {};
this._buttonLayout.visible = (buttons.length > 0);
for (let i = 0; i < buttons.length; i++) {
let buttonInfo = buttons[i];
let label = buttonInfo['label'];
let action = buttonInfo['action'];
let key = buttonInfo['key'];
let isDefault = buttonInfo['default'];
if (isDefault && !key)
key = Clutter.KEY_Return;
buttonInfo.button = new St.Button({ style_class: 'modal-dialog-button',
reactive: true,
can_focus: true,
label: label });
if (isDefault)
buttonInfo.button.add_style_pseudo_class('default');
let x_alignment;
if (buttons.length == 1)
x_alignment = St.Align.END;
else if (i == 0)
x_alignment = St.Align.START;
else if (i == buttons.length - 1)
x_alignment = St.Align.END;
else
x_alignment = St.Align.MIDDLE;
if (!this._initialKeyFocusDestroyId)
this._initialKeyFocus = buttonInfo.button;
this._buttonLayout.add(buttonInfo.button,
{ expand: true,
x_fill: false,
y_fill: false,
x_align: x_alignment,
y_align: St.Align.MIDDLE });
buttonInfo.button.connect('clicked', action);
if (key)
this._actionKeys[key] = action;
}
// Fade in buttons if there weren't any before
if (!hadChildren && buttons.length > 0) {
this._buttonLayout.opacity = 0;
Tweener.addTween(this._buttonLayout,
{ opacity: 255,
time: FADE_IN_BUTTONS_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this, function() {
this.emit('buttons-set');
})
});
} else {
this.emit('buttons-set');
}
},
_onKeyPressEvent: function(object, keyPressEvent) {
let symbol = keyPressEvent.get_key_symbol();
let action = this._actionKeys[symbol];
if (action)
action();
},
_onGroupDestroy: function() {
this.emit('destroy');
},
_fadeOpen: function() {
let monitor = Main.layoutManager.currentMonitor;
this._backgroundBin.set_position(monitor.x, monitor.y);
this._backgroundBin.set_size(monitor.width, monitor.height);
this.state = State.OPENING;
this._dialogLayout.opacity = 255;
if (this._lightbox)
this._lightbox.show();
this._group.opacity = 0;
this._group.show();
Tweener.addTween(this._group,
{ opacity: 255,
time: OPEN_AND_CLOSE_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this,
function() {
this.state = State.OPENED;
this.emit('opened');
})
});
},
setInitialKeyFocus: function(actor) {
if (this._initialKeyFocusDestroyId)
this._initialKeyFocus.disconnect(this._initialKeyFocusDestroyId);
this._initialKeyFocus = actor;
this._initialKeyFocusDestroyId = actor.connect('destroy', Lang.bind(this, function() {
this._initialKeyFocus = this._dialogLayout;
this._initialKeyFocusDestroyId = 0;
}));
},
open: function(timestamp) {
if (this.state == State.OPENED || this.state == State.OPENING)
return true;
if (!this.pushModal(timestamp))
return false;
this._fadeOpen();
return true;
},
close: function(timestamp) {
if (this.state == State.CLOSED || this.state == State.CLOSING)
return;
this.state = State.CLOSING;
this.popModal(timestamp);
this._savedKeyFocus = null;
Tweener.addTween(this._group,
{ opacity: 0,
time: OPEN_AND_CLOSE_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this,
function() {
this.state = State.CLOSED;
this._group.hide();
})
});
},
// Drop modal status without closing the dialog; this makes the
// dialog insensitive as well, so it needs to be followed shortly
// by either a close() or a pushModal()
popModal: function(timestamp) {
if (!this._hasModal)
return;
let focus = global.stage.key_focus;
if (focus && this._group.contains(focus))
this._savedKeyFocus = focus;
else
this._savedKeyFocus = null;
Main.popModal(this._group, timestamp);
global.gdk_screen.get_display().sync();
this._hasModal = false;
if (!this._shellReactive)
this._eventBlocker.raise_top();
},
pushModal: function (timestamp) {
if (this._hasModal)
return true;
if (!Main.pushModal(this._group, timestamp))
return false;
this._hasModal = true;
if (this._savedKeyFocus) {
this._savedKeyFocus.grab_key_focus();
this._savedKeyFocus = null;
} else
this._initialKeyFocus.grab_key_focus();
if (!this._shellReactive)
this._eventBlocker.lower_bottom();
return true;
},
// This method is like close, but fades the dialog out much slower,
// and leaves the lightbox in place. Once in the faded out state,
// the dialog can be brought back by an open call, or the lightbox
// can be dismissed by a close call.
//
// The main point of this method is to give some indication to the user
// that the dialog reponse has been acknowledged but will take a few
// moments before being processed.
// e.g., if a user clicked "Log Out" then the dialog should go away
// imediately, but the lightbox should remain until the logout is
// complete.
_fadeOutDialog: function(timestamp) {
if (this.state == State.CLOSED || this.state == State.CLOSING)
return;
if (this.state == State.FADED_OUT)
return;
this.popModal(timestamp);
Tweener.addTween(this._dialogLayout,
{ opacity: 0,
time: FADE_OUT_DIALOG_TIME,
transition: 'easeOutQuad',
onComplete: Lang.bind(this,
function() {
this.state = State.FADED_OUT;
})
});
}
});
Signals.addSignalMethods(ModalDialog.prototype);