bacfdbbb03
ES6 finally adds standard class syntax to the language, so we can replace our custom Lang.Class framework with the new syntax. Any classes that inherit from GObject will need special treatment, so limit the port to regular javascript classes for now. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/361
90 lines
2.8 KiB
JavaScript
90 lines
2.8 KiB
JavaScript
/** -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
|
|
/*
|
|
* Copyright 2012 Inclusive Design Research Centre, OCAD University.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Author:
|
|
* Joseph Scheuhammer <clown@alum.mit.edu>
|
|
* Contributor:
|
|
* Magdalen Berns <m.berns@sms.ed.ac.uk>
|
|
*/
|
|
|
|
const Atspi = imports.gi.Atspi;
|
|
const Signals = imports.signals;
|
|
|
|
const CARETMOVED = 'object:text-caret-moved';
|
|
const STATECHANGED = 'object:state-changed';
|
|
|
|
var FocusCaretTracker = class FocusCaretTracker {
|
|
constructor() {
|
|
this._atspiListener = Atspi.EventListener.new(this._onChanged.bind(this));
|
|
|
|
this._atspiInited = false;
|
|
this._focusListenerRegistered = false;
|
|
this._caretListenerRegistered = false;
|
|
}
|
|
|
|
_onChanged(event) {
|
|
if (event.type.indexOf(STATECHANGED) == 0)
|
|
this.emit('focus-changed', event);
|
|
else if (event.type == CARETMOVED)
|
|
this.emit('caret-moved', event);
|
|
}
|
|
|
|
_initAtspi() {
|
|
if (!this._atspiInited && Atspi.init() == 0) {
|
|
Atspi.set_timeout(250, 250);
|
|
this._atspiInited = true;
|
|
}
|
|
|
|
return this._atspiInited;
|
|
}
|
|
|
|
registerFocusListener() {
|
|
if (!this._initAtspi() || this._focusListenerRegistered)
|
|
return;
|
|
|
|
this._atspiListener.register(STATECHANGED + ':focused');
|
|
this._atspiListener.register(STATECHANGED + ':selected');
|
|
this._focusListenerRegistered = true;
|
|
}
|
|
|
|
registerCaretListener() {
|
|
if (!this._initAtspi() || this._caretListenerRegistered)
|
|
return;
|
|
|
|
this._atspiListener.register(CARETMOVED);
|
|
this._caretListenerRegistered = true;
|
|
}
|
|
|
|
deregisterFocusListener() {
|
|
if (!this._focusListenerRegistered)
|
|
return;
|
|
|
|
this._atspiListener.deregister(STATECHANGED + ':focused');
|
|
this._atspiListener.deregister(STATECHANGED + ':selected');
|
|
this._focusListenerRegistered = false;
|
|
}
|
|
|
|
deregisterCaretListener() {
|
|
if (!this._caretListenerRegistered)
|
|
return;
|
|
|
|
this._atspiListener.deregister(CARETMOVED);
|
|
this._caretListenerRegistered = false;
|
|
}
|
|
};
|
|
Signals.addSignalMethods(FocusCaretTracker.prototype);
|