/usr/share/help/ca/gnome-devel-demos/progressbar.js.page is in gnome-devel-docs 3.14.1-1.
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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="progressbar.js" xml:lang="ca">
<info>
<title type="text">ProgressBar (JavaScript)</title>
<link type="guide" xref="beginner.js#display-widgets"/>
<revision version="0.1" date="2012-06-01" status="draft"/>
<credit type="author copyright">
<name>Taryn Fox</name>
<email its:translate="no">jewelfox@fursona.net</email>
<years>2012</years>
</credit>
<desc>A bar which animates to indicate progress</desc>
</info>
<title>ProgressBar</title>
<media type="video" mime="application/ogv" src="media/progressbar.ogv">
<tt:tt xmlns:tt="http://www.w3.org/ns/ttml">
<tt:body>
<tt:div begin="0s" end="6s">
<tt:p>
Pressing any key stops and starts this ProgressBar.
</tt:p>
</tt:div>
</tt:body>
</tt:tt>
</media>
<p>This ProgressBar is stopped and started by pressing any key.</p>
<code mime="application/javascript" style="numbered">#!/usr/bin/gjs
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Gtk = imports.gi.Gtk;
const Lang = imports.lang;
const ProgressBarExample = new Lang.Class({
Name: 'ProgressBar Example',
// Create the application itself
_init: function() {
this.application = new Gtk.Application({
application_id: 'org.example.jsprogressbar',
flags: Gio.ApplicationFlags.FLAGS_NONE
});
// Connect 'activate' and 'startup' signals to the callback functions
this.application.connect('activate', Lang.bind(this, this._onActivate));
this.application.connect('startup', Lang.bind(this, this._onStartup));
},
// Callback function for 'activate' signal presents windows when active
_onActivate: function() {
this._window.present();
},
// Callback function for 'startup' signal builds the UI
_onStartup: function() {
this._buildUI ();
},
// Build the application's UI
_buildUI: function() {
// Create the application window
this._window = new Gtk.ApplicationWindow({ application: this.application,
window_position: Gtk.WindowPosition.CENTER,
default_height: 20,
default_width: 220,
title: "ProgressBar Example"});
// Create the progress bar
this.progressBar = new Gtk.ProgressBar ();
this._window.add(this.progressBar);
// Start the function that pulses the bar every 100 milliseconds
this.sourceID = GLib.timeout_add(GLib.PRIORITY_DEFAULT, 100, Lang.bind(this, this._barPulse));
// Connect a keypress event to the function that toggles the bar to start or stop pulsing
this._window.connect("key-press-event", Lang.bind(this, this._onKeyPress));
// Show the window and all child widgets
this._window.show_all();
},
// Pulse the progressbar (unless it has been disabled by a keypress)
_barPulse: function() {
this.progressBar.pulse();
return true;
},
// Start or stop the progressbar when a key is pressed
_onKeyPress: function() {
if (this.sourceID == 0)
this.sourceID = GLib.timeout_add(GLib.PRIORITY_DEFAULT, 100, Lang.bind(this, this._barPulse));
else {
GLib.source_remove(this.sourceID);
this.sourceID = 0;
}
}
});
// Run the application
let app = new ProgressBarExample ();
app.application.run (ARGV);
</code>
<p>
In this sample we used the following:
</p>
<list>
<item><p><link href="http://www.roojs.org/seed/gir-1.2-gtk-3.0/gjs/GLib.html">GLib</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>
<item><p><link href="http://www.roojs.com/seed/gir-1.2-gtk-3.0/gjs/Gtk.ProgressBar.html">Gtk.ProgressBar</link></p></item>
</list>
</page>
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