# Dialog (JavaScript)

Taryn Fox
jewelfox@fursona.net 2012
Ein Popup-Fenster
Mario Blättermann
mario.blaettermann@gmail.com 2011, 2013, 2016, 2018, 2021

# Dialog

Ein anpassbares Popup-Fenster mit einem Inhalts- und einem Aktionsbereich. Der Inhaltsbereich dieses Beispieldialogs enthält eine kurze Meldung und der Aktionsbereich enthält einen Knopf, der den Dialog schließt.

#!/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);

In diesem Beispiel haben wir Folgendes verwendet:

Gtk.Application

Gtk.ApplicationWindow

Gtk.Dialog