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<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="aboutdialog.js" xml:lang="es">
<info>
<title type="text">AboutDialog (JavaScript)</title>
<link type="guide" xref="beginner.js#windows"/>
<revision version="0.1" date="2012-05-30" status="draft"/>
<credit type="author copyright">
<name>Taryn Fox</name>
<email its:translate="no">jewelfox@fursona.net</email>
<years>2012</years>
</credit>
<desc>Mostrar información acerca de una aplicación</desc>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Daniel Mustieles</mal:name>
<mal:email>daniel.mustieles@gmail.com</mal:email>
<mal:years>2011 - 2017</mal:years>
</mal:credit>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Nicolás Satragno</mal:name>
<mal:email>nsatragno@gmail.com</mal:email>
<mal:years>2012 - 2013</mal:years>
</mal:credit>
<mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
<mal:name>Jorge González</mal:name>
<mal:email>jorgegonz@svn.gnome.org</mal:email>
<mal:years>2011</mal:years>
</mal:credit>
</info>
<title>AboutDialog</title>
<media type="image" mime="image/png" src="media/aboutdialog_GMenu.png"/>
<p>Una ventana de diálogo modal que muestra información sobre una aplicación Se muestra al pulsar el elemento de menú «Acerca de» en la aplicación, que es normalmente un buen sitio para ponerla.</p>
<code mime="application/javascript" style="numbered">#!/usr/bin/gjs
imports.gi.versions.Gtk = '3.0';
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Gtk = imports.gi.Gtk;
class AboutDialogExample {
// Create the application itself
constructor() {
this.application = new Gtk.Application({
application_id: 'org.example.jsaboutdialog',
flags: Gio.ApplicationFlags.FLAGS_NONE
});
// Connect 'activate' and 'startup' signals to the callback functions
this.application.connect('activate', this._onActivate.bind(this));
this.application.connect('startup', this._onStartup.bind(this));
}
// Callback function for 'activate' signal presents windows when active
_onActivate() {
this._window.present();
}
// Callback function for 'startup' signal creates the menu and builds the UI
_onStartup() {
this._initMenus();
this._buildUI();
}
// Build the application's UI
_buildUI() {
// Create the application window
this._window = new Gtk.ApplicationWindow({ application: this.application,
window_position: Gtk.WindowPosition.CENTER,
title: "AboutDialog Example",
default_height: 250,
default_width: 350 });
// Show the window and all child widgets
this._window.show_all();
}
// Create the application menu
_initMenus() {
let menu = new Gio.Menu();
menu.append("About", 'app.about');
menu.append("Quit",'app.quit');
this.application.set_app_menu(menu);
// Create the "About" menu option and have it call the _showAbout() function
let aboutAction = new Gio.SimpleAction({ name: 'about' });
aboutAction.connect('activate', () => { this._showAbout(); });
this.application.add_action(aboutAction);
// Create the "Quit" menu option and have it close the window
let quitAction = new Gio.SimpleAction ({ name: 'quit' });
quitAction.connect('activate', () => { this._window.destroy(); });
this.application.add_action(quitAction);
}
_showAbout() {
// String arrays of the names of the people involved in the project
var authors = ["GNOME Documentation Team"];
var documenters = ["GNOME Documentation Team"];
// Create the About dialog
let aboutDialog = new Gtk.AboutDialog({ title: "AboutDialog Example",
program_name: "GtkApplication Example",
copyright: "Copyright \xa9 2012 GNOME Documentation Team",
authors: authors,
documenters: documenters,
website: "http://developer.gnome.org",
website_label: "GNOME Developer Website" });
// Attach the About dialog to the window
aboutDialog.modal = true;
aboutDialog.transient_for = this._window;
// Show the About dialog
aboutDialog.show();
// Connect the Close button to the destroy signal for the dialog
aboutDialog.connect('response', function() {
aboutDialog.destroy();
});
}
};
// Run the application
let app = new AboutDialogExample();
app.application.run(ARGV);
</code>
<p>En este ejemplo se usa lo siguiente:</p>
<list>
<item><p><link href="http://developer.gnome.org/gio/unstable/GMenu.html">GMenu</link></p></item>
<item><p><link href="http://developer.gnome.org/gio/stable/GSimpleAction.html">GSimpleAction</link></p></item>
<item><p><link href="http://www.roojs.com/seed/gir-1.2-gtk-3.0/gjs/Gtk.AboutDialog.html">Gtk.AboutDialog</link></p></item>
<item><p><link href="http://www.roojs.com/seed/gir-1.2-gtk-3.0/gjs/Gtk.Application.html">Gtk.Application</link></p></item>
<item><p><link href="http://developer.gnome.org/gtk3/stable/GtkApplicationWindow.html">Gtk.ApplicationWindow</link></p></item>
</list>
</page>
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