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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="dialog.js" xml:lang="ca">
<info>
<title type="text">Dialog (JavaScript)</title>
<link type="guide" xref="beginner.js#windows"/>
<revision version="0.1" date="2012-05-29" status="draft"/>
<credit type="author copyright">
<name>Taryn Fox</name>
<email its:translate="no">jewelfox@fursona.net</email>
<years>2012</years>
</credit>
<desc>A popup window</desc>
</info>
<title>Dialog</title>
<media type="image" mime="image/png" src="media/dialog.png"/>
<p>A customizable popup window, which has a content area and an action area. This example dialog's content area contains a short message, and its action area contains a button which dismisses the dialog.</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 DialogExample = new Lang.Class ({
Name: 'Dialog Example',
// Create the application itself
_init: function () {
this.application = new Gtk.Application ({
application_id: 'org.example.jsdialog',
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,
title: "Gtk.Dialog Example",
default_height: 50,
default_width: 250 });
// Create a button
this._button = new Gtk.Button ({label: "Click Me"});
this._window.add (this._button);
// Bind it to the function that creates the dialog
this._button.connect ("clicked", Lang.bind(this, this._createDialog));
// Show the window and all child widgets
this._window.show_all();
},
_createDialog: function () {
// Create the dialog
this._dialog = new Gtk.Dialog ({ transient_for: this._window,
modal: true,
title: "A Gtk+ dialog" });
// Create the dialog's content area, which contains a message
this._contentArea = this._dialog.get_content_area();
this._message = new Gtk.Label ({label: "This demonstrates a dialog with a label"});
this._contentArea.add (this._message);
// Create the dialog's action area, which contains a stock OK button
this._actionArea = this._dialog.get_action_area();
this._OKButton = new Gtk.Button.new_from_stock (Gtk.STOCK_OK);
this._actionArea.add (this._OKButton);
// Connect the button to the function that handles what it does
this._OKButton.connect ("clicked", Lang.bind (this, this._OKHandler));
this._dialog.show_all();
},
_OKHandler: function (dialog, response_id) {
// Destroy the dialog
this._dialog.destroy();
}
});
// Run the application
let app = new DialogExample ();
app.application.run (ARGV);
</code>
<p>
In this sample we used the following:
</p>
<list>
<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.Dialog.html">Gtk.Dialog</link></p></item>
</list>
</page>
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