1<?xml version="1.0" encoding="utf-8"?> 2<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="gl"> 3 <info> 4 <title type="text">AboutDialog (JavaScript)</title> 5 <link type="guide" xref="beginner.js#windows"/> 6 <revision version="0.1" date="2012-05-30" status="draft"/> 7 8 <credit type="author copyright"> 9 <name>Taryn Fox</name> 10 <email its:translate="no">jewelfox@fursona.net</email> 11 <years>2012</years> 12 </credit> 13 14 <desc>Mostrar información sobre unha aplicación</desc> 15 16 <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright"> 17 <mal:name>Fran Dieguez</mal:name> 18 <mal:email>frandieguez@gnome.org</mal:email> 19 <mal:years>2012-2013.</mal:years> 20 </mal:credit> 21 </info> 22 23 <title>AboutDialog</title> 24 <media type="image" mime="image/png" src="media/aboutdialog_GMenu.png"/> 25 <p>A modal dialog window which shows information about an application and its creators. This one is triggered by clicking "About" in the application's menu, which is normally a good place to put it.</p> 26 27<code mime="application/javascript" style="numbered">#!/usr/bin/gjs 28 29imports.gi.versions.Gtk = '3.0'; 30 31const Gio = imports.gi.Gio; 32const GLib = imports.gi.GLib; 33const Gtk = imports.gi.Gtk; 34 35class AboutDialogExample { 36 37 // Create the application itself 38 constructor() { 39 this.application = new Gtk.Application({ 40 application_id: 'org.example.jsaboutdialog', 41 flags: Gio.ApplicationFlags.FLAGS_NONE 42 }); 43 44 // Connect 'activate' and 'startup' signals to the callback functions 45 this.application.connect('activate', this._onActivate.bind(this)); 46 this.application.connect('startup', this._onStartup.bind(this)); 47 } 48 49 // Callback function for 'activate' signal presents windows when active 50 _onActivate() { 51 this._window.present(); 52 } 53 54 // Callback function for 'startup' signal creates the menu and builds the UI 55 _onStartup() { 56 this._initMenus(); 57 this._buildUI(); 58 } 59 60 // Build the application's UI 61 _buildUI() { 62 // Create the application window 63 this._window = new Gtk.ApplicationWindow({ application: this.application, 64 window_position: Gtk.WindowPosition.CENTER, 65 title: "AboutDialog Example", 66 default_height: 250, 67 default_width: 350 }); 68 69 // Show the window and all child widgets 70 this._window.show_all(); 71 } 72 73 // Create the application menu 74 _initMenus() { 75 let menu = new Gio.Menu(); 76 menu.append("About", 'app.about'); 77 menu.append("Quit",'app.quit'); 78 this.application.set_app_menu(menu); 79 80 // Create the "About" menu option and have it call the _showAbout() function 81 let aboutAction = new Gio.SimpleAction({ name: 'about' }); 82 aboutAction.connect('activate', () => { this._showAbout(); }); 83 this.application.add_action(aboutAction); 84 85 // Create the "Quit" menu option and have it close the window 86 let quitAction = new Gio.SimpleAction ({ name: 'quit' }); 87 quitAction.connect('activate', () => { this._window.destroy(); }); 88 this.application.add_action(quitAction); 89 } 90 91 _showAbout() { 92 93 // String arrays of the names of the people involved in the project 94 var authors = ["GNOME Documentation Team"]; 95 var documenters = ["GNOME Documentation Team"]; 96 97 // Create the About dialog 98 let aboutDialog = new Gtk.AboutDialog({ title: "AboutDialog Example", 99 program_name: "GtkApplication Example", 100 copyright: "Copyright \xa9 2012 GNOME Documentation Team", 101 authors: authors, 102 documenters: documenters, 103 website: "http://developer.gnome.org", 104 website_label: "GNOME Developer Website" }); 105 106 // Attach the About dialog to the window 107 aboutDialog.modal = true; 108 aboutDialog.transient_for = this._window; 109 110 // Show the About dialog 111 aboutDialog.show(); 112 113 // Connect the Close button to the destroy signal for the dialog 114 aboutDialog.connect('response', function() { 115 aboutDialog.destroy(); 116 }); 117 } 118}; 119 120// Run the application 121let app = new AboutDialogExample(); 122app.application.run(ARGV); 123</code> 124<p>Neste exemplo empregaremos o seguinte:</p> 125<list> 126 <item><p><link href="http://developer.gnome.org/gio/unstable/GMenu.html">GMenu</link></p></item> 127 <item><p><link href="http://developer.gnome.org/gio/stable/GSimpleAction.html">GSimpleAction</link></p></item> 128 <item><p><link href="http://www.roojs.com/seed/gir-1.2-gtk-3.0/gjs/Gtk.AboutDialog.html">Gtk.AboutDialog</link></p></item> 129 <item><p><link href="http://www.roojs.com/seed/gir-1.2-gtk-3.0/gjs/Gtk.Application.html">Gtk.Application</link></p></item> 130 <item><p><link href="http://developer.gnome.org/gtk3/stable/GtkApplicationWindow.html">Gtk.ApplicationWindow</link></p></item> 131</list> 132</page> 133