Une fenêtre surgissante personnalisable, avec une zone de contenu et une zone d'action. Cet exemple de boîte de dialogue montre que dans la zone de contenu il y a un petit message et dans la zone d'action il y a un bouton qui ferme la boîte.
#!/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 DialogExample {
// Create the application itself
constructor() {
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', 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 builds the UI
_onStartup() {
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: "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", this._createDialog.bind(this));
// Show the window and all child widgets
this._window.show_all();
}
_createDialog() {
// 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 = 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", this._OKHandler.bind(this));
this._dialog.show_all();
}
_OKHandler(dialog, response_id) {
// Destroy the dialog
this._dialog.destroy();
}
};
// Run the application
let app = new DialogExample ();
app.application.run (ARGV);
Dans cet exemple, les éléments suivants sont utilisés :
Gtk.Application
Gtk.ApplicationWindow
Gtk.Dialog